Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
  • F24H4/00—Fluid heaters characterised by the use of heat pumps
  • F24H4/02—Water heaters
  • F24H4/04—Storage heaters
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/40—Casings; Connections of working fluid
  • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
  • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
  • F04D29/4226—Fan casings
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/60—Mounting; Assembling; Disassembling
  • F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
  • F04D29/602—Mounting in cavities
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/60—Mounting; Assembling; Disassembling
  • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
  • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
  • F04D29/626—Mounting or removal of fans
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
  • F24H9/00—Details
  • F24H9/02—Casings; Cover lids; Ornamental panels
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
  • F25B30/00—Heat pumps
  • F25B30/02—Heat pumps of the compression type
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
  • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
  • F05D2250/00—Geometry
  • F05D2250/30—Arrangement of components
  • F05D2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
  • F05D2250/314—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being inclined in relation to each other
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
  • F25B2339/00—Details of evaporators; Details of condensers
  • F25B2339/04—Details of condensers
  • F25B2339/047—Water-cooled condensers

Definitions

• the present disclosure relates to the technical field of household electrical appliances, in particular to a heat pump water heater.
• the heat pump water heater can introduce cold water from the water inlet into the water tank, and heat the cold water into hot water using a heat pump device, and then allow the hot water to flow out through a water outlet for use by users.
• a heat pump water heater including a water tank assembly and a heat pump device.
• the water tank assembly includes a first housing, a water tank body and a condenser.
• the water tank body is disposed in the first housing, and the water tank body has a water inlet and a water outlet.
• the condenser is disposed in the first housing and configured to release heat to heat water in the water tank body.
• the heat pump device is positioned on top of the water tank assembly, and the heat pump device includes a compressor, an evaporator, a fan assembly, a throttling assembly and an electric control box.
• the compressor has an inlet port and an exhaust port, and the exhaust port is connected to the condenser.
• the evaporator is connected to the inlet port and configured to absorb heat in air.
• the fan assembly is positioned on one side of the evaporator and configured to guide outside air to the evaporator.
• the throttling assembly is disposed between the evaporator and the condenser, and the compressor, the condenser, the throttling assembly and the evaporator are connected in sequence to form a refrigerant circulation loop.
• An electric control box is provided, and the electric control box and the compressor are positioned on an opposite side from the one side of the evaporator, the electric control box is coupled with the compressor, the fan assembly, and the throttling assembly.
• the heat pump device further comprises a base arranged at the top of the water tank assembly, and the compressor, the evaporator, the fan assembly, the electric control box and the throttling assembly are respectively arranged at a side of the base away from the water tank body.
• the base comprises a base body and a plurality of hoisting structures. The plurality of hoisting structures are arranged at intervals in a circumferential direction of the base body, so that the base is mounted to the top of the water tank assembly by the hoisting structures.
• the term “comprise” and other forms thereof, such as the third-person singular form “comprises” and the present participle form “comprising” are construed in an open, inclusive meaning, that is, “comprising, but not limited to.”
• the terms “one embodiment,” “some embodiments,” “exemplary embodiments,” “example,” “specific example,” or “some examples,” etc. are intended to indicate that a particular feature, structure, material, or characteristic related to the embodiment or example is included in at least one embodiment or example of the present disclosure.
• the schematic illustration of the above terms does not necessarily refer to the same embodiment or example.
• the specific features, structures, materials, or characteristics described may be included in any one or more embodiments or examples in any suitable manner.
• first and second are for descriptive purposes only, and are not to be understood as indicating or implying relative importance or as implicitly indicating the number of technical features indicated. Thus, the use of terms like “first” and “second” to describe features can explicitly or implicitly encompass one or more of such features.
• a plurality means two or more.
• Coupled is to be understood in a broad sense, for example, “connected” may refer to a fixed connection, may also refer to a detachable connection, or an integral connection; and it may refer to a direct connection or an indirect connected through an intermediate medium.
• coupled indicates that two or more components are in direct physical or electrical contact.
• coupled or “communicatively coupled” may also indicate that two or more components are not in direct contact with each other, but still cooperate or interact with each other.
• the embodiments disclosed herein are not necessarily limited to the contents herein.
• At least one of A, B, and C has the same meaning as "at least one of A, B, or C", encompassing the following combinations of A, B, and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, as well as a combination of A, B, and C.
• a and/or B includes three combinations of only A, only B, and a combination of A and B.
• parallel encompasses both absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism can be, for instance, within 5° of deviation; similarly, “perpendicular” includes both absolute perpendicularity and approximate perpendicularity, with an acceptable deviation range for approximate perpendicularity that can also be, for example, within 5° of deviation.
• equal encompasses both absolute equality and approximate equality, where the acceptable deviation range for approximate equality can be, for example, a difference between the two quantities being compared that is less than or equal to 5% of either quantity.
• Heat pump water heater is a new type of water heater after electric water heater, gas water heater and solar water heater. Heat pump water heaters heat the water in the tank by absorbing heat from the air. In this way, they avoid the problems of electric water heater leakage, dry burning and possible gas poisoning when the gas water heater is used, and overcomes the shortcomings of the solar water heaters, which are greatly affected by the weather conditions. Heat pump water heaters offer advantages such as high efficiency, energy saving, safety, environmental protection, all-weather operation, and ease of use.
• the heat pump water heater 100 includes a water tank assembly 1 and a heat pump device 2.
• the water tank assembly 1 includes a first housing 11, a water tank body 12, and a condenser.
• the water tank body 12 is disposed in the first housing 11 and is configured to store water.
• the water tank body 12 includes a water inlet 121 and a water outlet 122.
• the water inlet 121 and the water outlet 122 may be provided at both ends of the water tank body 12 in an axial direction.
• the water inlet 121 is configured to connect an external pipe so that cold water can flow into the water tank body 12 through the water inlet 121, and the cold water can flow out of the water tank body 12 through the water outlet 122 after being heated for use by the user.
• the condenser is disposed in the first housing 11, and the condenser may be a heat conductor of a hollow tubular structure.
• the condenser is a copper tube and is wound around the outside of the water tank body 12.
• the heat pump device 2 is located at top of the water tank assembly 1.
• the heat pump device 2 includes a second housing 21, and a compressor 22 and an evaporator 23 accommodated in the second housing 21.
• the evaporator 23 is configured to absorb heat in the air.
• the compressor 22 has an inlet port and an exhaust port, the exhaust port of the compressor 22 is connected to one end of the condenser, and the inlet port of the compressor 22 is connected to one end of the evaporator 23.
• the heat pump device 2 further includes a throttling assembly 24.
• the throttling assembly 24 is connected between an another end of the evaporator 23 and an another end of the condenser.
• the compressor 22, the condenser, the throttling assembly 24, and the evaporator 23 are sequentially connected to form a refrigerant circulation loop.
• the refrigerant may flow in the refrigerant circulation loop, thereby enabling heat exchange between the condenser and the water tank body 12 to heat the water in the water tank body 12.
• the heat pump device 2 further includes a fan assembly 25.
• the fan assembly 25 is provided on one side of the evaporator 23, and is configured to guide outside air to the evaporator 23. After absorbing heat inside the evaporator 23, the refrigerant returns to the compressor 22 to be compressed again, and this process repeats in a continuous cycle, so that thermal energy from the air is continuously transferred to the water, raising the temperature of the water within the water tank body 12.
• the heat pump device 2 further includes an electric control box 26.
• the electric control box 26 is coupled to the compressor 22, the evaporator 23, and the fan assembly 25.
• the electric control box 26 and the compressor 22 are located on the same side of the evaporator 23 and are opposite to the fan assembly 25.
• the electric control box 26 is configured to control the normal operation of the heat pump water heater 100.
• the fan assembly 25 and the compressor 22 are located on both sides of the evaporator 23 in the thickness direction (the left-right direction as shown in FIG. 8 ), respectively.
• the fan assembly 25 When the heat pump water heater 100 is operating, the fan assembly 25 operates. Under the action of the fan assembly 25, a large amount of air flows across the outer surface of the evaporator 23. The heat in the air is absorbed by the evaporator 23, and the temperature of the air decreases to become cold air. The cold air is then discharged from the fan assembly 25.
• the refrigerant inside the evaporator 23 absorbs heat and vaporizes, and then is sucked into the compressor 22.
• the compressor 22 compresses the returned low-pressure refrigerant gas into a high-temperature and high-pressure gas, and transfers the refrigerant gas into a condenser wrapped around the outer side wall of the water tank body 12.
• the heat generated by the high-temperature and high-pressure gas is transferred to the inside of the water tank body 12 by heat conduction through the condenser to heat the water in the water tank body 12.
• the refrigerant in the condenser is cooled to a liquid under the continuous action of pressure, which is throttled and cooled by the throttling assembly 24 (such as an expansion valve) and then flows into the evaporator 23 again. Since the pressure in the evaporator 23 suddenly decreases, the liquid refrigerant rapidly evaporates into a gaseous state at the evaporator 23 and absorbs a large amount of heat. In this repeated cycle, the thermal energy from the air is continuously transferred to the water, causing the water temperature in the water tank body 12 to rise.
• the throttling assembly 24 such as an expansion valve
• the heat pump device 2 is assembled first, and then the heat pump device 2 is assembled with the water tank assembly 1.
• the heat pump device 2 is assembled with the water tank assembly 1.
• the present disclosure proposes a heat pump water heater 100.
• the heat pump device 2 of the heat pump water heater 100 further includes a base 28, and the base 28 is provided on the top of the water tank assembly 1.
• the compressor 22, the evaporator 23, the throttling assembly 24, the fan assembly 25, and the electric control box 26 are provided on the side (e.g., the upper side) of the base 28 away from the water tank assembly 1, respectively.
• the base 28 includes a base body 280 and a plurality of hoisting structures 29, and the plurality of hoisting structures 29 are arranged at intervals in a circumferential direction of the base body 280.
• the hoisting structures 29 are provided on the base body 280 so that after the heat pump device 2 is assembled, the heat pump device 2 is lifted at the plurality of hoisting structures 29 by external equipment (such as a crane, etc.), thereby realizing the assembly between the heat pump device 2 and the water tank assembly 1.
• the installation of the plurality of hoisting structures 29 can make installation convenient and labor-saving, thereby improving the production efficiency of the heat pump water heater 100 and reducing the production cost of the heat pump water heater 100.
• the base body 280 includes a bottom wall 281 and a side wall 282, and the side wall 282 is connected to the outer periphery of the bottom wall 281.
• the hoisting structure 29 comprises at least one connecting wall 291, and the connecting wall 291 is connected to the bottom wall 281, and the two ends of the connecting wall 291 are spaced apart from each other and connected to the side wall 282, respectively.
• the bottom end of the connecting wall 291 is connected to the bottom wall 281, and the connecting wall 291 may be disposed on a side of the side wall 282 of the base body 280 that is adjacent to the center of the base body 280.
• both ends of the connecting wall 291 are connected to the side wall 282, and the connecting wall 291 and the side wall 282 are provided in the radial direction of the heat pump water heater 100, so that the hoisting structure 29 can define a space for accommodating a lifting rope, a hook, or the like.
• one end of the lifting rope is connected to the hoisting structure 29 and the other end of the lifting rope is connected to external equipment, such as a crane.
• the connecting wall 291 is connected to the bottom wall 281 along one end in the up-down direction of the heat pump water heater 100, and is connected to the side wall 282 at both ends in the direction perpendicular to the radius of the bottom wall 281, thereby increasing the structural strength of the side wall 282 corresponding to the hoisting structure 29, preventing the heat pump device 2 from falling off during hoisting, and thereby increasing reliability during hoisting.
• the connecting wall 291 includes a first sub-connecting wall 2911, a second sub-connecting wall 2912, and a third sub-connecting wall 2913.
• the first sub-connecting wall 2911 and the third sub-connecting wall 2913 are spaced apart from each other, one end of the first sub-connecting wall 2911 and one end of the third sub-connecting wall 2913 are respectively connected to the side wall 282, and the second sub-connecting wall 2912 is connected between an another end of the first sub-connecting wall 2911 and an another end of the third sub-connecting wall 2913.
• a distance between the first sub-connecting wall 2911 and the third sub-connecting wall 2913 tends to decrease in a direction from the side wall 282 toward a center of the bottom wall 281. That is, the first sub-connecting wall 2911 and the third sub-connecting wall 2913 are close to each other in a direction toward the center of the bottom wall 281.
• the cross-sections of the first sub-connecting wall 2911, the second sub-connecting wall 2912, the third sub-connecting wall 2913, and a part of the side wall 282 connected to the connecting wall 291 are trapezoidal.
• the hoisting structure 29 further includes a connecting hole 2821.
• the connecting hole 2821 is provided on the inner bottom surface of the bottom wall 281, and the connecting hole 2821 is provided opposite to the connecting wall 291.
• the connecting hole 2821 is provided at the connection between the bottom wall 281 and the side wall 282 of the base body 280, one end of the lifting rope may pass through the corresponding connecting hole 2821 to be connected at the hoisting structure 29, while the other end of the lifting rope is connected to an external equipment, and the external equipment uses the lifting rope to lift the heat pump device 2 and place the heat pump device 2 on the top of the water tank assembly 1.
• the structural strength of the side wall 282 and the bottom wall 281 corresponding to the hoisting structure 29 is reduced due to the arrangement of the connecting hole 2821, and by arranging the connecting wall 291, the structural strength around the connecting hole 2821 can be increased to avoid deformation or fracture at the connecting hole 2821.
• the connecting hole 2821 also facilitates the installation of the lifting rope.
• the width of the connecting hole 2821 increases from top to bottom. That is, the opening on the side of the connecting hole 2821 adjacent to the bottom wall 281 is large.
• the connecting hole 2821 has an inclined inner wall. When the hoisting structure 29 and the external equipment are connected using the lifting rope, the lifting rope may pass through the connecting hole 2821 and move along the inner wall of the connecting hole 2821 to the top of the connecting hole 2821 to tightly fit the connecting hole 2821.
• the width of the connecting hole 2821 is increased from the top to the bottom, and it is convenient to fit the lifting rope with the connecting hole 2821, so as to improve the hoisting efficiency.
• the hoisting structure 29 includes a connecting plate 292.
• the connecting plate 292 includes a first sub-connecting plate 2921, a second sub-connecting plate 2922, a third sub-connecting plate 2923, and a fourth sub-connecting plate 2924 connected in sequence.
• the first sub-connecting plate 2921 to the fourth sub-connecting plate 2924 are located on the side of the side wall 282 close to the center of the base body 280, and are connected to the bottom wall 281 of the base body 280.
• the first sub-connecting plate 2921 is connected to the side wall 282 and is disposed opposite to the third sub-connecting plate 2923, and the second sub-connecting plate 2922 is disposed opposite to the fourth sub-connecting plate 2924.
• the first sub-connecting plate 2921 has a first through-hole 2821A
• the third sub-connecting plate 2923 has a second through-hole 2821B
• the first through-hole 2821A communicates with the second through-hole 2821B to form the connecting hole 2821.
• the hoisting structure 29 protrudes integrally from the edge of the side wall 282 of the base 28 to facilitate the mounting of the lifting rope through the connecting hole 2821.
• the hoisting structure 29 further includes a first reinforcing rib 293 and a second reinforcing rib 294. Both ends of the first reinforcing rib 293 are respectively connected to the first sub-connecting plate 2921 and the third sub-connecting plate 2923, and both ends of the second reinforcing rib 294 are respectively connected to the second sub-connecting plate 2922 and the fourth sub-connecting plate 2924 to further strengthen the strength of the hoisting structure 29.
• one of the mounting plate 13 and the base 28 is provided with at least one positioning groove 2822, and the other of the mounting plate 13 and the base 28 is provided with at least one positioning member 135.
• the positioning member 135 fits in the positioning groove 2822 to connect the base 28 and the mounting plate 13.
• the base 28 is provided with the positioning groove 2822, and the mounting plate 13 is provided with the positioning member 135.
• the positioning member 135 fits with the positioning groove 2822.
• the positioning member 135 is configured to restrict rotation of the base 28 in the circumferential direction of the heat pump water heater 100.
• the fitting of the positioning member 135 and the positioning groove 2822 facilitates the assembly of the mounting plate 13 and the base 28, and limits the base 28, which is beneficial to increasing the stability of the base 28 after installation.
• an orthographic projection of the base body 280 on the horizontal plane lies within an orthographic projection of the mounting plate 13 on the horizontal plane.
• at least part of the side wall 282 of the base body 280 is located radially inward of mounting plate 13 and is spaced apart from the side wall of the mounting plate 13. That is, the part of the base body 280 where the hoisting structure 29 is provided, is spaced apart from the side wall 282 corresponding to the hoisting structure 29. Accordingly, after the base 28 is assembled with the mounting plate 13, it is possible to prevent the side wall of the mounting plate 13 from interfering with the removal of the lifting rope.
• the positioning groove 2822 is provided on the base body 280, and the positioning groove 2822 extends through at least partial the side wall 282 of the base body 280 to form an opening.
• the positioning member 135 is provided on the mounting plate 13, and after the positioning member 135 is fitted with the positioning groove 2822, at least a part of the positioning member 135 extends out of the opening in a direction away from the center of the base body 280 along the radial direction of the base body 280, and is located on the side of the side wall 282 of the base body 280 that is adjacent to the side wall of the mounting plate 13.
• the cross-sectional area of the positioning member 135 is larger than the cross-sectional area of the opening. Accordingly, the convenience and accuracy of mounting the base body 280 and the mounting plate 13 can be increased.
• the cross-sectional area of the positioning member 135 tends to increase from top to bottom along the axial direction of the heat pump water heater 100, and the shape of the positioning groove 2822 matches the shape of the positioning member 135.
• the positioning member 135 has at least one fifth guide surface 1351, and the fifth guide surface 1351 is inclined from top to bottom toward the hoisting structure 29.
• the orthographic projection of the positioning member 135 onto the side wall 282 of the corresponding base body 280 may be trapezoidal, and the shape of the positioning groove 2822 is the same as the shape of the positioning member 135.
• the fifth guide surface 1351 contacts and abuts against the inner wall of the positioning groove 2822, so that the positioning groove 2822 is fitted with the positioning member 135 to improve the stability of the connection between the base 28 and the mounting plate 13. Furthermore, since the cross-sectional area of the top portion of the positioning member 135 is small, it is convenient to fit the positioning member 135 with the positioning groove 2822, so that the assembly efficiency of the base 28 and the mounting plate 13 can be improved.
• the positioning groove 2822 and the positioning member 135 are disposed adjacent to the hoisting structure 29.
• the positioning groove 2822 is spaced apart from the corresponding connecting hole 2821.
• the positioning groove 2822 and the hoisting structure 29 are located on the same side of the base 28, which is convenient for the installer to observe whether the assembly of the positioning groove 2822 and the positioning member 135 is in place during the hoisting process, so as to improve the assembly efficiency of the base 28 and the mounting plate 13, and thus the overall assembly efficiency of the heat pump water heater 100 can be improved.
• the lower end of the second housing 21 is detachably connected to the mounting plate 13.
• the second housing 21 and the mounting plate 13 form a second accommodating cavity 20 (i.e., an accommodating cavity), and the compressor 22, the evaporator 23, the throttling assembly 24, the fan assembly 25 and the electric control box 26 are all positioned in the second accommodating cavity 20.
• One of the second housing 21 and the mounting plate 13 is provided with an accommodating portion 131, and the other of the second housing 21 and the mounting plate 13 is provided with a snap-fitting portion 215, and the snap-fitting portion 215 is fitted in the accommodating portion 131 to connect the second housing 21 and the mounting plate 13.
• the second housing 21 includes a snap-fitting portion 215, and the snap-fitting portion 215 may be a boss.
• the mounting plate 13 includes an accommodating portion 131, and the accommodating portion 131 may be a groove.
• the accommodating portion 131 is provided on the outer peripheral edge of the mounting plate 13.
• the accommodating portion 131 is formed such that a part of the mounting plate 13 is recessed toward the central axis of the mounting plate 13.
• the snap-fitting portion 215 is provided on the inner wall surface of the second housing 21, and is located at one end of the second housing 21 adjacent to the mounting plate 13. At the time of assembly, the second housing 21 can be pre-installed to the mounting plate 13 by the engagement of the snap-fitting portion 215 and the accommodating portion 131.
• one end of the snap-fitting portion 215 extends in the direction towards the central axis of the second housing 21, and the other end of one end of the snap-fitting portion 215 is connected to the second housing 21.
• the width of one end of the snap-fitting portion 215 is smaller than the width of the other end so as to be fitted with the corresponding accommodating portion 131.
• the heat pump water heater 100 further includes a display device 27 (such as a display panel), and the display device 27 is disposed on the second housing 21.
• the display device 27 is configured to display the water temperature in the water tank body 12.
• the second housing 21 may be pre-installed on the mounting plate 13 by the engagement of the snap-fitting portion 215 and the accommodating portion 131, and then the display device 27 may be wired to prevent the second housing 21 from falling off from the mounting plate 13 at the time of wiring.
• the assembly mode is simple, the operation is convenient, and the assembly efficiency can be further improved.
• the mounting plate 13 includes a mounting plate body 132 and a fitting portion 133 connected to each other.
• the mounting plate body 132 is connected to the first housing 11, the fitting portion 133 is provided in the circumferential direction of the mounting plate body 132 and extends in a direction away from the first housing 11, and the accommodating portion 131 is formed on the fitting portion 133.
• the shape of the mounting plate body 132 is compatible with the shape of the top portion of the first housing 11 to separate the heat pump device 2 from the water tank body 12 and prevent water in the water tank body 12 from entering the second housing 21 to cause a short circuit of the heat pump device 2.
• the fitting portion 133 is located at the edge of the mounting plate body 132 and on the side away from the water tank assembly 1. Further, the fitting portion 133 extends in the circumferential direction of the mounting plate body 132 and is perpendicular to the mounting plate body 132. Further, the fitting portion 133 is spaced apart from the outer peripheral surface of the mounting plate body 132 so that the fitting portion 133 can be positioned within the second housing 21 after the second housing 21 and the mounting plate 13 are assembled, and at this time, the lower end face of the second housing 21 abuts against the outer peripheral surface of the mounting plate body 132.
• the structure of the mounting plate 13 is simple and easy to process, and the tightness of the connection between the second housing 21 and the mounting plate 13 can be improved, and external liquid can be prevented from entering the inside of the second housing 21 from the connection, thereby playing a waterproof effect on the compressor 22 and the like.
• the second housing 21 includes a first sub-housing 211 and a second sub-housing 212 that are detachably connected.
• the snap-fitting portion 215 includes a first sub-snap-fitting portion 2111 and a second sub-snap-fitting portion 2121.
• the first sub-housing 211 is provided with a plurality of first sub-snap-fitting portions 2111, and the plurality of first sub-snap-fitting portions 2111 are arranged at intervals in a circumferential direction of the first sub-housing 211.
• the second sub-housing 212 is provided with a plurality of second sub-snap-fitting portions 2121, and the plurality of second sub-snap-fitting portions 2121 are arranged at intervals in a circumferential direction of the second sub-housing 212.
• the plurality of accommodating portions 131 include a plurality of first sub-accommodating portions 1311 and a plurality of second sub-accommodating portions 1312.
• the first sub-snap-fitting portions 2111 are respectively positioned in the first sub-accommodating portions 1311 to pre-install the first sub-housing 211 on the mounting plate 13.
• the second sub-snap-fitting portions 2121 are located in the second sub-accommodating portions 1312, respectively, so as to pre-install the second sub-housing 212 to the mounting plate 13.
• the display device 27 is disposed in the first sub-housing 211.
• the first sub-housing 211 can be pre-installed on the mounting plate 13 by the engagement of the first sub-snap-fitting portion 2111 and the first sub-accommodating portion 1311, and then the display device 27 can be wired to prevent the first sub-housing 211 from falling off from the mounting plate 13 during wiring.
• the second sub-housing 212 is then connected to the first sub-housing 211, thereby providing sufficient space for wiring operation.
• At least two of the plurality of first sub-accommodating portions 1311 have a third guide surface, and the third guide surface is in contact with the first guide surface.
• At least two of the plurality of second sub-accommodating portions 1312 have a fourth guide surface, and the fourth guide surface is in contact with the second guide surface.
• the first guide surface mates with the third guide surface to quickly install the first sub-housing 211 to the mounting plate 13, and the second guide surface mates with the fourth guide surface to quickly install the second sub-housing 212 to the mounting plate 13. In this way, it is advantageous to improve the assembly efficiency between the housing and the mounting plate 13.
• the plurality of second sub-snap-fitting portions 2121 on the second sub-housing 212 are respectively located at both ends in the circumferential direction of the second sub-housing 212.
• This arrangement can ensure that there is sufficient space in the middle of the second sub-housing 212, facilitating the installation of a fan assembly 25 with a larger size into the second accommodating cavity 20 and adjacent to the side of the second sub-housing 212, so as to make full use of the space in the second housing 21, make the arrangement of the heat pump device 2 compact, and reduce the overall volume of the heat pump device 2.
• the second housing 21 further includes at least one sealing component 216, and the sealing component 216 is disposed on the inner side wall of the second housing 21 and on a side of the second housing 21 adjacent to the mounting plate 13.
• the sealing component 216 is positioned between two adjacent snap-fitting portions 215 of the plurality of snap-fitting portions 215. At the time of installation, the sealing component 216 abuts against the outer peripheral surface of the fitting portion 133.
• the sealing property between the mounting plate 13 and the second housing 21 can be further improved, external impurities or liquids can be prevented from entering the second housing 21, and the cleanliness of the inside of the second housing 21 can be ensured.
• At least one first limiting portion 136 is provided on the outer peripheral surface of the fitting portion 133, that is, the first limiting portion 136 is provided on the side of the fitting portion 133 adjacent to the second housing 21.
• the sealing component 216 abuts against a first limiting portion 136, and the first limiting portion136 may be supported on the corresponding sealing component 216.
• the at least one sealing component 216 includes a plurality of sealing components 216, and a plurality of first sub-sealing components 2161 are arranged at intervals in the circumferential direction of the inner side wall of the second housing 21.
• the at least one first limiting portion 136 includes a plurality of first limiting portions 136, and the plurality of first limiting portions 136 are arranged at intervals in the circumferential direction of the mounting plate 13.
• a latch 2113 is provided on one of the first sub-housing 211 and the second sub-housing 212, a second limiting portion 134 is provided on the mounting plate 13, and the latch 2113 abuts against the second limiting portion 134.
• two latches 2113 are provided at one end of the inner wall surface of the first sub-housing 211 adjacent to the mounting plate 13.
• the two latches 2113 are respectively located at both ends in the circumferential direction of the first sub-housing 211, and the two latches 2113 are located on the side of the first sub-snap-fitting portion 2111 away from the sealing component 216.
• a side of the fitting portion 133 adjacent to the center of the mounting plate body 132 is provided with two second limiting portions 134, and the two second limiting portions 134 may be opposite in the radial direction of the mounting plate body 132.
• the first sub-snap-fitting portion 2111 and the second sub-snap-fitting portion 2121 are fitted into the corresponding accommodating portion 131, respectively, and the latch 2113 is fitted to the side wall of the second limiting portion 134.
• rotation of the second housing 21 about the central axis of the mounting plate 13 can be avoided, and the second housing 21 can be firmly fixed to the mounting plate 13.
• the first sub-housing 211 further includes a first mounting post 2115.
• the second sub-housing 212 further includes a second mounting post 2125, and the second mounting post 2125 is provided corresponding to the first mounting post 2115. Two ends of a fastener are connected to the first mounting post 2115 and the second mounting post 2125, respectively.
• both ends of the fastener extend into the first mounting post 2115 and the second mounting post 2125, respectively. Accordingly, the connection reliability of the first sub-housing 211 and the second sub-housing 212 can be improved, and the first sub-housing 211 and the second sub-housing 212 can be avoided from being disengaged.
• the first sub-housing 211 is provided with at least one first connecting portion 213, and the second sub-housing 212 is provided with less than one second connecting portion 214, and the second connecting portion 214 is matched with the first connecting portion 213 to improve the waterproof performance of the connection between the first sub-housing 211 and the second sub-housing 212.
• one of the first connecting portion 213 and the second connecting portion 214 has a protrusion, and the other of the first connecting portion 213 and the second connecting portion 214 has a groove.
• the configurations of the second connecting portion 214 and the first connecting portion 213 will be described by taking an example in which the first connecting portion 213 has a groove and the second connecting portion 214 has a protrusion.
• the first connecting portion 213 is provided at the edge of the first sub-housing 211 and extends in the axial direction of the first sub-housing 211.
• the second connecting portion 214 is provided at the edge of the second sub-housing 212 and extends in the axial direction of the second sub-housing 212.
• the second connecting portion 214 is fitted into the first connecting portion 213 so that the end face of the first sub-housing 211 and the end face of the second sub-housing 212 are fitted to each other, and the gap at the connection between the first sub-housing 211 and the second sub-housing 212 is reduced, so that the sealing property at the connection between the first sub-housing 211 and the second sub-housing 212 can be improved.
• the first connecting portion 213 includes a first segment 2131 and a second segment 2132.
• the first segment 2131 extends in the axial direction of the first housing 11.
• One end of the second segment 2132 is connected to the first segment 2131, and the other end of the second segment 2132 extends in a direction toward the center of the first housing 11.
• the second connecting portion 214 includes a fourth segment 2141 and a fifth segment 2142.
• the fourth segment 2141 extends in the axial direction of the first housing 11, and the fourth segment 2141 fits within the first segment 2131.
• One end of the fifth segment 2142 is connected to the fourth segment 2141, the other end of the fifth segment 2142 extends in a direction toward the center of the first housing 11, and the fifth segment 2142 is fitted in the second segment 2132.
• the second segment 2132 extends in a horizontal direction toward a direction away from the first segment 2131, at which point the first connecting portion 213 forms a first bending portion.
• the fifth segment 2142 extends in the horizontal direction in a direction away from the fourth segment 2141, at which point the second connecting portion 214 forms a second bending portion.
• the first connecting portion 213 and the second connecting portion 214 can further realize the sealing of the first sub-housing 211 and the second sub-housing 212, making it difficult for external liquid to penetrate into the second housing 21, thereby strengthening the waterproof effect of the heat pump water heater 100.
• the second housing 21 further includes a top cover 3, and top cover 3 is provided on a side (such as an upper side) of the first sub-housing 211 and the second sub-housing 212 away from the water tank assembly 1.
• the top cover 3 includes a top cover extension segment 31 and a top cover body 32 connected to each other, and the top cover body 32 is opposite to the top of the second housing 21, and the top cover extension segment 31 extends obliquely downward in a direction away from the top cover body 32, and the end face of the free end of the top cover extension segment 31, i.e. the bottom wall of the top cover 3, abuts against the outer side wall of the second segment 2132.
• the top cover 3 covers the upper part of the mating position of the first connecting portion 213 and the second connecting portion 214, providing protection for the first sub-housing 211 and the second sub-housing 212, so that the upper part of the mating position of the first connecting portion 213 and the second connecting portion 214 has double waterproofing performance, which is beneficial to enhance the waterproofing effect of the heat pump water heater 100.
• the first connecting portion 213 further includes a third segment 2133.
• One end of the third segment 2133 is connected to the other end of the second segment 2132, and the other end of the third segment 2133 extends obliquely in a direction away from the second segment 2132.
• the second connecting portion 214 further includes a sixth segment 2143.
• One end of the sixth segment 2143 is connected to the other end of the fifth segment 2142, the other end of the sixth segment 2143 extends obliquely in a direction away from the end of the second connecting portion 214, and the sixth segment 2143 is fitted in the third segment 2133.
• the third segment 2133 extends obliquely upward in a direction away from the second segment 2132.
• the length of the third segment 2133 may be less than the distance from the top cover body 32 to the second segment 2132.
• the sixth segment 2143 extends obliquely upward in a direction away from the fifth segment 2142.
• one end of the first connecting portion 213 and one end the second connecting portion 214, adjacent to the top cover 3, are provided with a plurality of bending portions.
• the first sub-housing 211 and the second sub-housing 212 are further sealed, enhancing the waterproofing performance of the second housing 21.
• the mounting plate 13 is positioned between the first housing 11 and the second housing 21.
• the side wall of the mounting plate 13 projects into the second housing 21.
• the fitting portion 133 of the mounting plate 13 extends upward to form a side wall, and the diameter of the side wall is smaller than the diameter of the second housing 21.
• the second housing 21 is located on the outside of the side wall of the mounting plate 13, so that the lower parts of the first connecting portion 213 and the second connecting portion 214 have double waterproofing performance, enhancing the waterproofing effect of the heat pump water heater 100.
• the free end of the side wall of the mounting plate 13 i.e., the top end of the fitting portion 133 is higher than the free end of the first segment 2131 (i.e., the bottom end of the first segment 2131).
• the end face of the free end of the side wall of the mounting plate 13 is located above the free end of the first segment 2131, and in this situation, the free end of the side wall of the mounting plate 13 partially overlap with the free end of the first segment 2131 in the axial direction of the second housing 21, and even if the external liquid penetrates into the second housing 21 from the lower part of the mating position of the first connecting portion 213 and the second connecting portion 214, the side wall of the mounting plate 13 can block the external liquid from further penetrating into the second housing 21, thereby further strengthening the waterproof effect of the heat pump water heater 100.
• first connecting portions 213 and two the second connecting portions 214 there are two first connecting portions 213 and two the second connecting portions 214, and with reference to FIGS. 18 to 20 , the two first connecting portions 213 are respectively located at both ends in the circumferential direction of the first sub-housing 211, and the two second connecting portions 214 are respectively located at both ends in the circumferential direction of the second sub-housing 212.
• the waterproof effect of the connection between the first sub-housing 211 and the second sub-housing 212 is ensured by mating the two first connecting portions 213 with the two second connecting portions 214.
• the fan assembly 25 includes a volute 251, a volute extending portion 252, and a wind wheel 255.
• the volute 251 is provided on the side of the evaporator 23 away from the compressor 22, and the volute 251 has a second air inlet 2511 and a second air outlet 2512.
• the second air inlet 2511 is disposed facing the evaporator 23.
• the second air outlet 2512 opposes and communicates with the first air outlet 302 in the axial direction of the second housing 21.
• the air entering the inside of the second housing 21 from the first air inlet 301 is adapted to flow through the second air inlet 2511 and enter the fan assembly 25, and then be discharged from the second air outlet 2512 and the first air outlet 302.
• one end of the volute extending portion 252 is connected to the second air outlet 2512, the other end of the volute extending portion 252 is opposite to the first air outlet 302, the second air outlet 2512 is oriented toward the first air outlet 302 (i.e., the up-down direction), and the volute extending portion 252 is inclined in a direction close to the evaporator 23.
• the wind wheel 255 is provided in the volute 251, and after the air entering the second housing 21 from the first air inlet 301 flows through the evaporator 23 and exchanges heat with the evaporator 23, the air enters the volute 251 through the second air inlet 2511 and is discharged from the first air outlet 302 through the second air outlet 2512.
• the volute extending portion 252 is disposed obliquely toward the side on which the evaporator 23 is located. In this way, on the one hand, the volute extending portion 252 can form an avoidance space on the other side away from the evaporator 23, facilitating the installation of the second housing 21. On the other hand, a partial space around the evaporator 23 can be utilized to make the internal structure of the heat pump device 2 more compact, and facilitate communication between the second air outlet 2512 and the first air outlet 302 to increase the air outlet volume at the first air outlet 302.
• the space at the top of the evaporator 23 can be fully utilized, facilitating an increase in the area of the second air outlet 2512, which is conducive to aligning the second air outlet 2512 with the first air outlet 302, thereby increasing the air outlet volume at the second air outlet 2512 and ensuring the air to be promptly exhausted, which improves the utilization rate of the internal space of the second housing 21.
• the volute extending portion 252 includes an opening segment 253 and a connecting segment 254, the connecting segment 254 is connected to the opening segment 253, and the connecting segment 254 is located closer to the volute 251 than the opening segment 253.
• One end of the opening segment 253 is opposite to the first air outlet 302.
• the opening segment 253 is circular in cross-section.
• One end of the connecting segment 254 is connected to the other end of the opening segment 253, and the other end of the connecting segment 254 is connected to the second air outlet 2512.
• the cross-sectional shape of the other end of the connecting segment 254 is substantially rectangular.
• the air flowing out of the second air outlet 2512 sequentially passes through the connecting segment 254 and the opening segment 253, and then flows out of the first air outlet 302.
• the cross-sectional shape of the opening segment 253 is adapted to the shape of the first air outlet 302, thereby facilitating an increase in the air outlet area of the volute extending portion 252.
• the shape of the cross-section of the end of the connecting segment 254 away from the opening segment 253, such as a rectangular shape, is adapted to the shape of the second air outlet 2512. In this way, the air outlet area of the second air outlet 2512 can be increased, and the air outlet volume of the volute 251 can be increased, which is beneficial to improve the heat exchange efficiency of the evaporator 23.
• the connecting segment 254 includes a first surface 2541, a second surface 2542, a third surface 2543, a fourth surface 2544, a fifth surface 2545, and a sixth surface 2546 that are sequentially connected along the circumferential direction of the second air outlet 2512 of the volute 251.
• the first surface 2541 is connected to the evaporator 23 and the second surface 2542, respectively.
• the fourth surface 2544 is opposite to the side surface of the evaporator 23 facing the fan assembly 25.
• the sixth surface 2546 is connected to the fifth surface 2545 and the evaporator 23, respectively, and the sixth surface 2546 faces the first surface 2541.
• one side of the first surface 2541 is connected to the evaporator 23
• one side of the second surface 2542 is connected to the other side of the first surface 2541
• one side of the third surface 2543 is connected to the other side of the second surface 2542
• one side of the fourth surface 2544 is connected to the other side of the third surface 2543
• the fourth surface 2544 is opposite to the side surface of the evaporator 23 facing the fan assembly
• one side of the fifth surface 2545 is connected to the other side of the fifth surface 2545
• the other side of the sixth surface 2546 is connected to the evaporator 23
• the sixth surface 2546 is opposite to the first surface 2541.
• At least the second to fifth surfaces 2545 extend obliquely toward the evaporator 23 and in the direction of the second air outlet 2512 toward the first air outlet 302 (i.e., in a bottom-to-top direction).
• each of the outer peripheral surfaces of the first surface 2541 to the sixth surface 2546 is an irregularly curved surface.
• the radius of curvature of the portion of the fourth surface 2544 adjacent to the opening segment 253 is greater than the radius of curvature of the portion of the fourth surface 2544 adjacent to the second air outlet 2512.
• the end face of the second air outlet 2512 includes a first connecting segment, a second connecting segment, a third connecting segment, a fourth connecting segment, a fifth connecting segment, and a sixth connecting segment, and a region surrounded by connection lines between the end points of both ends of the first connecting segment and the corresponding points of the opening segment 253 along the direction of the central axis of the opening segment 253 (i.e., the up-down direction) forms the first surface 2541.
• the second to sixth surfaces 2542 to 2546 are formed in the same way.
• the first surface 2541 to the sixth surface 2546 extend obliquely from the second air outlet 2512 toward the opening segment 253, so that the volute extending portion 252 forms the lower end face of the connecting segment 254 according to the shape of the second air outlet 2512, so as to ensure that the cross-sectional area of the lower end face of the connecting segment 254 is compatible with the second air outlet 2512, thereby increasing the air outlet volume of the volute 251.
• two corners of the second air outlet 2512 away from the evaporator 23 have a first rounded corner 256 and a second rounded corner 257, respectively, the second surface 2542 and the third surface 2543 are connected at the first rounded corner 256, and the fifth surface 2545 is connected at the second rounded corner 257. That is, the second connecting segment and the third connecting segment form the first rounded corner 256, and the fifth connecting segment forms the second rounded corner 257.
• the first rounded corner 256 and the second rounded corner 257 are formed during the molding process of the volute 251.
• the cross-sectional area of the volute extending portion 252 decreases as the second surface 2542, the third surface 2543, and the fifth surface 2545 extend toward the opening segment 253 to direct air to the opening segment 253. Accordingly, the arrangement of the first rounded corner 256 and the second rounded corner 257 facilitates the reduction of the resistance of air flowing inside the volute 251, and facilitates the arrangement of the second surface 2542, the third surface 2543, and the fifth surface 2545, so that the connecting segment 254 is adapted to the second air outlet 2512.
• the first surface 2541 extends obliquely toward the center of the volute 251 (such as the side where the wind wheel 255 in FIG. 28 is located) in the direction of the second air outlet 2512 to the opening segment 253. Accordingly, by inclining the first surface 2541, it is possible to prevent the opening portion 253 from interfering with the installation of the second housing 21, and to improve the utilization rate of the internal space of the second housing 21.
• the inclination angle of the first surface 2541 is ⁇ . That is, the angle between the orthographic projection of the first surface 2541 on the first cross-sectional plane and the orthographic projection of the central axis of the opening segment 253 on the first cross-sectional plane is ⁇ , and the angle ⁇ satisfies ⁇ ⁇ 3 °. That is, the angle between the orthographic projection of the first surface 2541 onto the evaporator 23 and the central axis of the opening segment 253 is ⁇ , and the angle ⁇ satisfies: ⁇ ⁇ 3 °.
• the first cross-sectional plane is a cross section of the fan assembly 25 perpendicular to the central axis direction of the wind wheel 255.
• the central axis of the wind wheel 255 is a dashed line N-N shown in FIG. 26 .
• the angle ⁇ between the first surface 2541 and the central axis of the opening segment 253 is defined so that the first surface 2541 is located within a preset position range, which facilitates the alignment of the volute extending portion 252 with the first air outlet 302, thereby ensuring the air outlet effect.
• the fourth surface 2544 extends obliquely toward the evaporator 23 in the direction of the second air outlet 2512 toward the opening segment 253, and the inclination angle of the fourth surface 2544 is ⁇ , and the angle ⁇ satisfies: ⁇ ⁇ 5 °. That is, the angle between the orthographic projection of the fourth surface 2544 on the second cross-sectional plane and the orthographic projection of the central axis of the opening segment 253 on the second cross-sectional plane is ⁇ , and the angle ⁇ satisfies: ⁇ ⁇ 5 °.
• the second cross-sectional plane is a longitudinal plane crossing the central axis of the wind wheel 255, and the longitudinal plane extends in the direction of the central axis of the opening segment 253. That is, the second cross-section is a cross-section of the fan assembly 25 taken through the dashed line M-M in FIG. 28 .
• the air outlet effect of the volute extending portion 252 can be improved, and the resistance of the volute extending portion 252 to the air flow can be effectively reduced, ensuring that air from the second air outlet 2512 can be promptly exhausted from the volute extending portion 252.
• the evaporator 23 further includes an avoidance portion 231, and the volute extending portion 252 is partially located in the avoidance portion 231.
• the avoidance portion 231 is configured to avoid the volute extending portion 252.
• the ratio of the first orthographic projection area to the second orthographic projection area of the avoidance portion 231 on the horizontal plane is A
• the second orthographic projection area is the orthographic projection area of one end of the volute extending portion 252 away from the second air outlet 2512 on the horizontal plane (that is, the opening segment 253)
• the ratio A satisfies: 1/6 ⁇ A ⁇ 1/2.
• the volute extending portion 252 cannot appropriately utilize the internal space of the evaporator 23, resulting in a large overall volume of the evaporator 23 and the volute 251, which is not conducive to the miniaturization design of the heat pump device 2.
• insufficient space in the avoidance portion 231 will also affect the size of the cross-sectional area of the opening segment 253, thereby influencing the air outlet effect.
• the ratio of the orthogonal projection areas of the avoidance portion 231 and the opening segment 253 on a horizontal plane it facilitates the arrangement of the first air outlet 302 opposite to the opening segment 253, avoiding interference from the first air outlet 302 during the installation of the opening segment 253. Additionally, it enhances the structural compactness of the volute extending portion 252, the volute 251, and the evaporator 23, thereby increasing the internal space of the volute 251. In addition, the air outlet efficiency of the volute extending portion 252 can be ensured, so that air can quickly flow from the second air outlet 2512 to the first air outlet 302, and thus be discharged from the first air outlet 302.
• the connection between the end of the volute extending portion 252 away from the opening segment 253 (i.e., the bottom end) and the evaporator 23 is transitioned through a third rounded corner 258.
• the air can flow to the volute extending portion 252 through the third rounded corner 258 at the connection between the volute extending portion 252 and the evaporator 23, thereby increasing the air guidance at the connection, and preventing the air flow direction from changing greatly at the connection, which affects the air outlet efficiency of the volute extending portion 252.
• the volute 251 includes a third housing 2513 and a fourth housing 2514 connected to each other along the central axis direction of the wind wheel 255.
• the evaporator 23 includes a conduit for evaporation and a side plate to which the conduit is mounted.
• the third housing 2513 is connected to the side plate of the evaporator 23, and the third housing 2513 and the side plate are integrally formed.
• the fourth housing 2514 is connected to the side of the third housing 2513 away from the evaporator 23.
• the third housing 2513 being integrally formed with the side plate of the evaporator 23 can reduce the number of components of the heat pump device 2, which is beneficial to improve the installation efficiency of the volute 251.
• the second air inlet 2511 of the volute 251 communicates with the side plate of the evaporator 23, and the air passes through the conduit of the evaporator 23 for heat exchange, reaches the position where the side plate of the evaporator 23 is located, and then enters the volute 251 through the second air inlet 2511.
• the third housing 2513 being integrally formed with the side plate of the evaporator 23 can ensure the sealing property between the volute 251 and the evaporator 23, which is advantageous for increasing the air inlet volume of the second air inlet 2511.
• the ratio of the width of the third housing 2513 to the width of the fourth housing 2514 in the thickness direction of the evaporator 23, that is, in the central axis direction of the wind wheel 255, is B, and the ratio B satisfies 3/7 ⁇ B ⁇ 1.
• the width ratio B between the third housing 2513 and the fourth housing 2514 is less than 3/7, the internal space of the evaporator 23 cannot be sufficiently utilized, and the structural strength of the connection between the third housing 2513 and the evaporator 23 may be reduced.
• the width ratio B between the third housing 2513 and the fourth housing 2514 is greater than 1, the third housing 2513 is likely to interfere with the internal structure of the evaporator 23, and the air outlet volume of the second air outlet 2512 is affected.
• the third housing 2513 can reasonably utilize the space of the side plate, facilitating the alignment of the volute extending portion 252 with the first air outlet 302, ensuring the connection strength between the third housing 2513 and the evaporator 23, increasing the internal space of the volute 251, and increasing the air inlet volume and the air outlet volume of the volute 251.
• the top cover 3 has the first air inlet 301 and the first air outlet 302, and both of the first air inlet 301 and the first air outlet 302 communicate with the second accommodating cavity 20.
• the first air inlet 301 and the first air outlet 302 are respectively located on both sides of the evaporator 23, the first air outlet 302 and the fan assembly 25 are located on the same side of the evaporator 23 and the first air outlet 302 communicates with the fan assembly 25, and the air entering the inside of the second housing 21 from the first air inlet 301 is adapted to flow through the evaporator 23 and exchange heat with the evaporator 23 and then be discharged from the first air outlet 302 through the fan assembly 25.
• the first air inlet 301 and the first air outlet 302 are disposed non-centrally symmetrically with respect to the top cover 3, that is, the first air inlet 301 and the first air outlet 302 are not disposed opposite each other in the radial direction of the top cover 3. In this way, the first air inlet 301 can be avoided from being disturbed by components such as the electric control box 26, and the air inlet space and the air inlet efficiency can be increased.
• the air entering the second housing 21 from the first air inlet 301 needs to pass through a preset angle when flowing through the evaporator 23, and then flows out from the first air outlet 302, which can extend the flow path of the air from the first air inlet 301 to the first air outlet 302, so that the air can sufficiently exchange heat with the compressor 22, the electric control box 26, the evaporator 23, and the like.
• an angle between a line connecting the center of the first air inlet 301 to the center of the top cover and a line connecting the center of the first air outlet 302 to the center of the top cover 3 is ⁇ , and the angle ⁇ satisfies 80 ° ⁇ ⁇ ⁇ 180 °. That is, the center of the first air inlet 301 is connected to the center of the top cover 3 to form a first line segment, the center of the first air outlet 302 is connected to the center of the top cover 3 to form a second line segment, and the angle formed by orthographic projections of the first line segment and the second line segment onto the top cover 3 along the axial direction of the second housing 21 is ⁇ .
• the smaller the angle ⁇ the closer the distance between the first air inlet 301 and the first air outlet 302.
• the angle ⁇ is less than 80°, the first air inlet 301 and the first air outlet 302 are likely to interfere with each other, resulting in the air inlet and air outlet effects of the heat pump water heater 100 being affected. It may also result in a small angle between the lines connecting the first air inlet 301 and the first air outlet 302 respectively to the second air inlet 2511, increasing the resistance to air flow within the second housing 21.
• the air entering the interior of the second housing 21 through the first air inlet 301 passes through the evaporator 23, then through the second air inlet 2511 and the second air outlet 2512, and finally exits through the first air outlet 302. Therefore, when the central position of the second air inlet 2511 is fixed, the larger the angle ⁇ is, the shorter the passage through which the air flows inside the second housing 21 is, and the weaker the heat dissipation effect on the compressor 22 and the electric control box 26 inside the second housing 21 is. Further, the residence time of the air inside the second housing 21 becomes short, reducing the evaporation efficiency of the evaporator 23.
• the first air inlet 301 and the first air outlet 302 are provided symmetrically with respect to the center of the second housing 21.
• the first air inlet 301 may be partially located above the electric control box 26, resulting in a limited air intake space, and the air entering the interior of the second housing 21 through the first air inlet 301 is obstructed by the electric control box 26 and cannot reach the location of the evaporator 23 smoothly, leading to a loss of air flow.
• the angle ⁇ between the lines connecting the centers of the first air inlet 301 and the first air outlet 302 respectively to the center of the top cover 3 is 105°.
• the angle ⁇ between the first air inlet 301 and the first air outlet 302 on the one hand, it can ensure the air intake effect of the first air inlet 301, thereby ensuring the air volume required for the operation of the evaporator 23 and improving the heat exchange efficiency of the evaporator 23.
• it can ensure the air outlet effect of the first air outlet 302, which is conducive to increasing the flow rate of air inside the second housing 21, this allows the air to quickly carry away the heat generated by the operation of components such as the electric control box 26 and the compressor 22, effectively reducing the energy consumption of the heat pump water heater 100.
• the first air inlet 301 is disposed opposite to the compressor 22 in the axial direction of the second housing 21, and the first air inlet 301 is disposed spaced apart from the compressor 22. In other words, the first air inlet 301 is axially opposed to the compressor 22 within the second housing 21. The air entering the second housing 21 through the first air inlet 301 first passes through the compressor 22 before flowing towards the evaporator 23 and the electric control box 26.
• the second air inlet 2511 is located on the side of the evaporator 23 close to the electric control box 26.
• the second air inlet 2511 and the electric control box 26 are located on both sides of the evaporator 23 and are disposed opposite to each other.
• the air entering the second housing 21 from the first air inlet 301 first passes through the compressor 22, then passes through the electric control box 26 and the evaporator 23, and finally flows to the second air inlet 2511.
• the fan assembly 25 ensures that the air inside the second housing 21 flows from the side of the evaporator 23 close to the electric control box 26 (side S2 as shown in FIG. 33 ) towards the second air inlet 2511, avoiding air flowing from the side of the evaporator 23 close to the compressor 22 (side S1 as shown in FIG. 33 ) towards the second air inlet 2511. In this way, the area of the evaporator 23 through which the air flows is increased, thereby enhancing the windward area of the evaporator 23. Furthermore, it ensures that the air has sufficient contact with the electric control box 26, enabling heat dissipation for the electric control box 26 and thereby guaranteeing the operational efficiency of the electric control box 26.
• the center of the second air inlet 2511 is located on the side of the first central plane adjacent to the base body 280.
• the first central plane is a central plane in a height direction of the evaporator 23, and the first central plane extends in a central axis direction of the evaporator 23.
• the height direction of the evaporator 23 is the up-down direction shown in FIG. 34
• the width direction of the evaporator 23 is the left-right direction shown in FIG. 34 .
• the distance between the electric control box 26 and the evaporator 23 gradually increases in the direction towards the compressor 22, forming an angle ⁇ between the electric control box 26 and the evaporator 23, where the angle ⁇ satisfies: 15° ⁇ ⁇ ⁇ 30°.
• the first air inlet 301 faces the compressor 22, and air enters the second housing 21 through the first air inlet 301 and then flows towards the evaporator 23 and the space between the evaporator 23 and the electric control box 26 to facilitate heat dissipation of the electric control box 26.
• the distance between the electric control box 26 and the evaporator 23 gradually increases in the direction toward the compressor 22, and the angle ⁇ between the electric control box 26 and the evaporator 23 is 25°.
• the angle ⁇ between the electric control box 26 and the evaporator 23 the air inlet volume of the evaporator 23 on the side close to the electric control box 26 can be increased, the heat exchange capacity and the heat exchange efficiency of the evaporator 23 can be improved, and a large amount of air can pass through the surface of the electric control box 26, enhancing the cooling effect of the electric control panel in the electric control box 26, and facilitating the heat dissipation of the electric control box 26.
• the heat pump water heater 100 further includes a filter screen assembly 4.
• the filter screen assembly 4 is disposed in the second housing 21, and the filter screen assembly 4 is opposite to the first air inlet 301.
• the filter screen assembly 4 may be disposed at the top opening of the second housing 21, and may be detachably connected to the second housing 21.
• the mounting groove is provided on the top side wall of the second housing 21, and the filter screen assembly 4 mates with the mounting groove to realize the assembly with the second housing 21.
• the filter screen assembly 4 includes a filter screen 41 and a mounting bracket 42, where the filter screen 41 is detachably arranged on the mounting bracket 42, and the mounting bracket 42 and the second housing 21 are integrally molded parts.
• the filter screen 41 has guide ribs 411.
• the mounting bracket 42 includes a bracket body and a mounting groove 421.
• the bracket body has a third through-hole that aligns with the first air inlet 301.
• the mounting grooves 421 are provided on both sides of the bracket body.
• the guide ribs 411 mate with the mounting groove 421 to enable the filter screen 41 to be smoothly attached to the mounting bracket 42, preventing the filter screen 41 from swinging with respect to the mounting bracket 42.
• the filter screen assembly 4 when the filter screen assembly 4 is detachably connected to the second housing 21 as a whole, it facilitates separate manufacturing of the filter screen assembly 4 and the second housing 21, reducing process complexity and improving installation efficiency.
• the mounting bracket 42 included in the filter screen assembly 4 is integrally formed with the second housing 21, it can enhance the structural strength of the second housing 21, facilitate the replacement of the filter screen 41, and reduce the cost of later maintenance.

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• 2023
  • 2023-08-23 EP EP25198941.4A patent/EP4636254A3/de active Pending
  • 2023-08-23 EP EP25198942.2A patent/EP4636255A3/de active Pending
  • 2023-08-23 EP EP23870062.9A patent/EP4596993A4/de active Pending
  • 2023-08-23 WO PCT/CN2023/114499 patent/WO2024066818A1/zh not_active Ceased

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