WO2020140722A1 - 冷藏冷冻装置 - Google Patents

冷藏冷冻装置 Download PDF

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Publication number
WO2020140722A1
WO2020140722A1 PCT/CN2019/124873 CN2019124873W WO2020140722A1 WO 2020140722 A1 WO2020140722 A1 WO 2020140722A1 CN 2019124873 W CN2019124873 W CN 2019124873W WO 2020140722 A1 WO2020140722 A1 WO 2020140722A1
Authority
WO
WIPO (PCT)
Prior art keywords
electromagnetic
generation module
refrigerator
electromagnetic generation
barrel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/124873
Other languages
English (en)
French (fr)
Inventor
王海娟
李鹏
赵坤坤
牟森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haier Smart Home Co Ltd
Qingdao Haier Special Refrigeration Electric Appliance Co Ltd
Original Assignee
Haier Smart Home Co Ltd
Qingdao Haier Special Refrigeration Electric Appliance Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Haier Smart Home Co Ltd, Qingdao Haier Special Refrigeration Electric Appliance Co Ltd filed Critical Haier Smart Home Co Ltd
Priority to US17/420,590 priority Critical patent/US12298074B2/en
Priority to EP19906611.9A priority patent/EP3907452B1/en
Priority to AU2019418577A priority patent/AU2019418577B2/en
Publication of WO2020140722A1 publication Critical patent/WO2020140722A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/72—Radiators or antennas
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D31/00—Other cooling or freezing apparatus
    • F25D31/005—Combined cooling and heating devices
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/80—Apparatus for specific applications
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/80—Freezing; Subsequent thawing; Cooling
    • A23B2/82—Thawing subsequent to freezing
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/006—General constructional features for mounting refrigerating machinery components
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/40—Refrigerating devices characterised by electrical wiring

Definitions

  • the invention relates to kitchen utensils, in particular to a refrigeration and freezing device with an electromagnetic wave heating unit.
  • the prior art In order to facilitate users to freeze and defrost foods, the prior art generally defrosts foods through electromagnetic wave devices.
  • An object of the present invention is to provide a refrigerated freezer with a high safety factor.
  • a further object of the present invention is to increase heating efficiency.
  • the present invention provides a refrigerated freezing device, including:
  • the cabinet defines at least one storage room
  • a refrigeration system configured to provide cooling capacity to the at least one storage compartment
  • Heating unit characterized in that the heating unit comprises:
  • the metal cylinder is arranged in one of the storage rooms, and has an access opening;
  • a door body provided at the access port, for opening and closing the access port
  • At least a part of the electromagnetic generating system is disposed in the cylinder or reaches the cylinder to generate electromagnetic waves in the cylinder to heat the object to be processed; wherein the cylinder is set to be grounded.
  • the box body includes an inner tank, an outer shell, and a heat insulation layer disposed between the inner tank and the outer shell, the outer shell includes a bottom steel disposed at the bottom of the heat insulation layer; and the refrigerator-freezer also include:
  • a power cord configured to receive mains electricity and power the refrigeration system, and the power cord includes a ground wire connected to the ground wire in the mains electricity and electrically connected to the bottom steel;
  • One end of the wire is electrically connected to the metal cylinder, and the other end is electrically connected to the bottom steel.
  • the bottom steel defines a compressor chamber for placing the compressor of the refrigeration system
  • the lead wire is preset in the heat preservation layer, and passes through the inner tank and the bottom steel, and connection terminals are left in the storage room room where the barrel is located and the compressor room, respectively.
  • the terminal is configured to be fixed and electrically connected to the barrel and the bottom steel through fasteners, respectively.
  • the electromagnetic generation system includes:
  • An electromagnetic generation module configured to generate electromagnetic wave signals
  • a radiating antenna is provided in the barrel and electrically connected to the electromagnetic generation module to generate electromagnetic waves of corresponding frequencies in the barrel according to the electromagnetic wave signal.
  • the electromagnetic generation module is disposed in the compressor room to facilitate heat dissipation of the electromagnetic generation module.
  • the refrigerator-freezer further includes:
  • Heat dissipation fins which are arranged to be thermally connected to the electromagnetic generation module to increase the heat dissipation area of the electromagnetic generation module;
  • Two lateral side walls of the compressor chamber are respectively provided with vents, so that ambient air enters the compressor chamber and exchanges heat with the electromagnetic generating module and the radiating fins.
  • the refrigerator-freezer further includes:
  • Signal processing and measurement and control circuit including:
  • a detection unit connected in series between the electromagnetic generation module and the radiation antenna, and the detection unit is configured to detect specific parameters of the incident wave signal and the reflected wave signal passing therethrough;
  • a control unit configured to calculate the electromagnetic wave absorption rate of the object to be processed according to the specific parameter
  • a matching unit is connected in series between the electromagnetic generation module and the radiation antenna, and the matching unit is configured to adjust the load impedance of the electromagnetic generation module according to the electromagnetic wave absorption rate.
  • the signal processing, measurement and control circuit is integrated into a circuit board, and the circuit board is configured to be electrically connected to the barrel.
  • circuit board and the radiating antenna are arranged in parallel, so as to facilitate the electrical connection of the signal processing and measurement and control circuit and the radiating antenna.
  • the refrigerating and freezing device of the present invention can lead out the high-voltage electrostatic charge on the cylinder to avoid potential safety hazards.
  • the electromagnetic generation module of the heating unit is installed in the compressor room, and heat dissipation fins are provided to dissipate heat from the electromagnetic generation module, which can avoid overheating and damage of the electromagnetic generation module, extend the service life, and reduce the failure rate.
  • the present invention adjusts the load impedance of the electromagnetic generation module through the matching unit, improves the matching degree of the output impedance of the electromagnetic generation module and the load impedance, and can place different fixed attributes (type, weight, volume, etc.) with different fixed properties in the heating chamber During the temperature change of food or food, more electromagnetic wave energy is radiated into the heating chamber.
  • FIG. 1 is a schematic structural diagram of a heating unit according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of the heating unit shown in FIG. 1, wherein the electromagnetic generation module and the power supply module are omitted;
  • FIG. 3 is a schematic enlarged view of area A in FIG. 2;
  • FIG. 4 is a schematic structural diagram of an electrical appliance room according to an embodiment of the present invention.
  • FIG. 5 is a schematic enlarged view of area B in FIG. 4;
  • FIG. 6 is a schematic structural diagram of an electrical appliance room according to another embodiment of the present invention.
  • FIG. 7 is a schematic enlarged view of the area C in FIG. 6;
  • FIG. 8 is a schematic structural diagram of a refrigerating and freezing device according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of the compressor chamber in FIG. 8.
  • FIG. 10 is a schematic structural view of the portion where the heating unit is located in the storage compartment viewed from the back to the front;
  • FIG. 11 is a schematic enlarged view of area D in FIG. 10.
  • FIG. 1 is a schematic structural diagram of a heating unit 100 according to an embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional view of the heating unit 100 shown in FIG. 1, wherein the electromagnetic generation module 161 and the power supply module 162 are omitted.
  • the heating unit 100 may include a barrel 110, a door 120, and an electromagnetic generation system.
  • the barrel 110 can be used for placing objects to be processed, and the front wall or the top wall can be provided with a pick-and-place port for picking and placing the objects.
  • the door 120 can be installed with the cylinder 110 by a suitable method, such as sliding rail connection, hinge connection, etc., for opening and closing the access opening.
  • the heating unit 100 further includes a drawer 140 for carrying the object to be processed.
  • the front end plate of the drawer 140 is configured to be fixedly connected to the door body 120, and the two lateral side plates are movably connected to the cylinder body 110 through slide rails. .
  • the electromagnetic generation system may be configured such that at least a part of the electromagnetic generating system is disposed in or reaches the cylinder 110 to generate electromagnetic waves in the cylinder 110 to heat the object to be processed in the cylinder 110.
  • the cylinder body 110 and the door body 120 may be respectively provided with electromagnetic shielding features, so that the door body 120 is electrically connected with the cylinder body 110 in the closed state to prevent electromagnetic leakage.
  • the electromagnetic generation system may include an electromagnetic generation module 161, a power supply module 162, and a radiation antenna 150.
  • the power supply module 162 may be configured to be electrically connected to the electromagnetic generation module 161 to provide electrical energy to the electromagnetic generation module 161, so that the electromagnetic generation module 161 generates an electromagnetic wave signal.
  • the radiation antenna 150 may be disposed in the barrel 110 and electrically connected to the electromagnetic generation module 161 to generate electromagnetic waves of corresponding frequencies according to the electromagnetic wave signal to heat the object to be processed in the barrel 110.
  • the barrel 110 may be made of metal to serve as a receiver to receive electromagnetic waves generated by the radiating antenna 150.
  • the top wall of the cylinder 110 may be provided with a receiving plate to receive the electromagnetic wave generated by the radiating antenna 150.
  • FIGS. 4 and 6 are schematic structural diagram of an electrical appliance room 112 according to another embodiment of the present invention.
  • the periphery of the radiating antenna 150 may be formed by a smooth curve, so that the distribution of electromagnetic waves in the barrel 110 is more uniform, thereby improving the temperature uniformity of the object to be processed.
  • the smooth curve refers to the curve equation is a continuous curve of the first derivative. In engineering, it means that the periphery of the radiation antenna 150 has no sharp corners.
  • the heating unit 100 may further include a radome 130 to divide the internal space of the barrel 110 into a heating chamber 111 and an electrical appliance chamber 112.
  • the to-be-processed object and the radiation antenna 150 may be respectively disposed in the heating chamber 111 and the electric appliance room 112 to separate the to-be-processed object and the radiation antenna 150 to prevent the radiation antenna 150 from being dirty or damaged by accidental touch.
  • the radome 130 may be made of an insulating material so that the electromagnetic waves generated by the radiating antenna 150 can pass through the radome 130 to heat the object to be processed. Further, the radome 130 may be made of a non-transparent material to reduce the electromagnetic loss of electromagnetic waves at the radome 130, thereby increasing the heating rate of the object to be treated.
  • the aforementioned non-transparent material is a translucent or opaque material.
  • the non-transparent material may be PP material, PC material or ABS material.
  • the radome 130 can also be used to fix the radiation antenna 150 to simplify the assembly process of the heating unit 100 and facilitate the positioning and installation of the radiation antenna 150.
  • the radome 130 may include a partition 131 partitioning the heating chamber 111 and the electrical appliance chamber 112, and a skirt 132 fixedly connected to the inner wall of the barrel 110.
  • the radiation antenna 150 may be fixedly connected to the partition 131.
  • the radiating antenna 150 may be configured to be fixedly connected to the radome 130.
  • FIG. 5 is a schematic enlarged view of area B in FIG. 4. Referring to FIG. 5, the radiating antenna 150 may be formed with a plurality of snap holes 151, and the radome 130 may be correspondingly formed with a plurality of snaps 133, and the multiple snaps 133 are respectively disposed through the multiple snap holes 151 and the radiating antenna 150 card connection.
  • the buckle 133 may be composed of two barbs arranged at intervals and mirror-symmetrical.
  • the buckle 133 may be composed of a fixing portion perpendicular to the radiating antenna 150 and hollow in the middle, and an elastic portion whose inner end edge is inclined to the fixing portion and extends toward the antenna.
  • the radiating antenna 150 may be configured to be fixed to the radome 130 through an electroplating process.
  • the radome 130 may further include a plurality of reinforcing ribs, which are configured to connect the partition plate 131 and the skirt 132 to improve the structural strength of the radome 130.
  • the radome 130 may be disposed at the bottom of the barrel 110 to prevent the radome 130 from being damaged by the user placing too high a to-be-processed object.
  • the radiation antenna 150 may be horizontally fixed to the lower surface of the partition 131.
  • the radiating antenna 150 may be disposed at a height of 1/3 to 1/2 of the barrel 110, for example, 1/3, 2/5, or 1/2, so that the volume of the heating chamber 111 is large, and at the same time, the heating chamber 111
  • the electromagnetic wave has a high energy density, which in turn causes the object to be processed to be quickly heated.
  • FIG. 3 is a schematic enlarged view of area A in FIG. 2.
  • the heating unit 100 may further include a signal processing and measurement and control circuit 170.
  • the signal processing and measurement and control circuit 170 may include a detection unit 171, a control unit 172, and a matching unit 173.
  • the detection unit 171 may be connected in series between the electromagnetic generation module 161 and the radiation antenna 150, and is configured to detect specific parameters of the incident wave signal and the reflected wave signal passing therethrough in real time.
  • the control unit 172 may be configured to acquire the specific parameter from the detection unit 171, and calculate the power of the incident wave and the reflected wave according to the specific parameter.
  • the specific parameter may be a voltage value and/or a current value.
  • the control unit 172 may further calculate the electromagnetic wave absorption rate of the object to be processed according to the power of the incident wave and the reflected wave, and compare the electromagnetic wave absorption rate with the preset absorption threshold, and send the adjustment to the matching unit 173 when the electromagnetic wave absorption rate is less than the preset absorption threshold instruction.
  • the preset absorption threshold may be 60-80%, such as 60%, 70%, or 80%.
  • the matching unit 173 may be connected in series between the electromagnetic generation module 161 and the radiating antenna 150, and is configured to adjust the load impedance of the electromagnetic generation module 161 according to the adjustment instruction of the control unit 172, thereby improving the output impedance and load impedance of the electromagnetic generation module 161 Matching degree, to place food with different fixed properties (type, weight, volume, etc.) in the heating chamber 111, or during the temperature change of food, more electromagnetic wave energy is radiated in the heating chamber 111, thereby improving heating rate.
  • the heating unit 100 may be used for thawing.
  • the control unit 172 may also be configured to calculate the change rate of the imaginary part of the dielectric coefficient of the object to be processed according to the power of the incident wave and the reflected wave, and compare the change rate of the imaginary part with a preset change threshold. When the change rate of the imaginary part is greater than or equal to the preset change threshold, a stop instruction is sent to the electromagnetic generation module 161 to stop the electromagnetic generation module 161 from working, and the defrosting program is terminated.
  • the preset change threshold can be obtained by testing the change rate of the imaginary part of the dielectric constant of foods with different fixed properties at -3 ⁇ 0 °C, so that the food has a better shear strength. For example, when the object to be processed is raw beef, the preset change threshold may be set to 2.
  • the control unit 172 can also be configured to receive user instructions and control the electromagnetic generation module 161 to start working according to the user instructions, wherein the control unit 172 is configured to be electrically connected to the power supply module 162 to obtain power from the power supply module 162 and remain in a standby state all the time.
  • the signal processing and measurement and control circuit 170 may be integrated into a circuit board and arranged in parallel with the radiation antenna 150 to facilitate the electrical connection of the radiation antenna 150 and the matching module.
  • the radome 130 and the barrel 110 may be respectively provided with heat dissipation holes 190 at positions corresponding to the matching units 173, so that the heat generated when the matching unit 173 works is discharged through the heat dissipation holes 190.
  • the signal processing and measurement and control circuit 170 may be disposed on the rear side of the radiation antenna 150.
  • the heat dissipation hole 190 may be opened in the rear wall of the radome 130 and the barrel 110.
  • the metal cylinder 110 may be set to be grounded to discharge the electric charge thereon to improve the safety of the heating unit 100.
  • the heating unit 100 may further include a metal bracket 180.
  • the metal bracket 180 may be configured to connect the circuit board and the barrel 110 to support the circuit board and discharge the charge on the circuit board through the barrel 110.
  • the metal bracket 180 may be composed of two parts perpendicular to each other.
  • the present invention may also provide a refrigerator-freezer 200.
  • 8 is a schematic structural diagram of a refrigerating and freezing device 200 according to an embodiment of the present invention.
  • the refrigerating and freezing device 200 may include a cabinet defining at least one storage compartment, at least one cabinet door for respectively opening and closing the at least one storage compartment, and providing cooling capacity to the at least one storage compartment Refrigeration system.
  • the cylinder of the heating unit 100 may be installed in a storage room.
  • at least one is one, two, or more than two or more.
  • the refrigerator-freezer 200 may be a refrigerator or a freezer.
  • the number of storage compartments is two, namely, the refrigerator compartment 221 and the freezer compartment 222 provided below the refrigerator compartment 221.
  • the cylinder of the heating unit 100 is provided in the freezing compartment 222.
  • the refrigeration system may include a compressor 241, a condenser 243, an evaporator 242, and a cooling fan 244 that blows the cold generated by the evaporator 242 into the freezing compartment 222, and a heat radiating fan 245 that radiates heat to the condenser 243.
  • the cabinet may include an inner liner 220, an outer shell 230, and a heat insulation layer 210 disposed between the inner liner 220 and the outer shell 230.
  • the housing 230 may include two side panels located laterally on both sides of the thermal insulation layer 210, a bottom steel 231 located at the bottom of the thermal insulation layer 210, and a back plate located at the rear of the thermal insulation layer 210.
  • the refrigerator-freezer 200 further includes a power cord (not shown in the figure) for receiving the mains power, which is used to supply power to the heating unit 100 and the refrigeration system.
  • the power cord may include a ground wire connected to the ground wire in the commercial power supply and conductively connected to the bottom steel 231 to prevent the refrigerator-freezer 200 from leaking electricity.
  • FIG. 9 is a schematic structural diagram of the compressor chamber 2311 in FIG. 8.
  • the bottom steel 231 defines a compressor chamber 2311, and the compressor 241, the condenser 243, and the heat radiating fan 245 may be disposed in the compressor chamber 2311.
  • Two lateral side walls of the compressor chamber 2311 may be respectively provided with a vent 2312 to allow ambient air to enter the compressor chamber 2311 to dissipate heat for the condenser 243 and the compressor 241.
  • the electromagnetic generation module 161 may be disposed in the compressor chamber 2311 to use the heat dissipation fan 245 to dissipate heat from the electromagnetic generation module 161.
  • the compressor chamber 2311 can also be provided with heat dissipation fins 270, which are disposed above the electromagnetic generation module 161 and are thermally connected to the electromagnetic generation module 161, so as to increase the heat dissipation area of the electromagnetic generation module 161 and improve the heat dissipation efficiency of the electromagnetic generation module 161 .
  • FIG. 10 is a schematic structural view of the portion of the heating unit located in the storage compartment viewed from the rear;
  • FIG. 11 is a schematic enlarged view of area D in FIG. 10.
  • a part of the metal bracket 180 may be provided at the rear of the circuit board and extend vertically in the lateral direction, and it may be provided with two wiring ports to enable the detection unit 171 (or matching unit 173)
  • the connection terminal 175 and the connection terminal 174 of the control unit 172 respectively extend from a connection port and are electrically connected to the electromagnetic generation module 161 through a signal transmission line 251.
  • the cylinder 110 can be electrically connected to the bottom steel 231 through the wire 252 to guide the charge on the bottom steel 231 to avoid potential safety hazards.
  • the signal transmission line 251 and the wire 252 can be preset in the heat insulation layer 210, and pass through the inner liner 220 and the bottom steel 231 to leave wiring terminals in the freezing compartment 222 and the compressor room 2311 respectively, so that the signal transmission line 251 and the wire 252 Can be routed together, saving assembly costs.
  • the two terminals of the wire 252 can be electrically connected to the barrel 110 and the bottom steel 231 through fasteners 261 and 262, respectively.
  • the steel 231 is electrically connected stably and reliably.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
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Abstract

一种冷藏冷冻装置（200），包括限定有至少一个储物间室的箱体、向至少一个储物间室提供冷量的制冷系统、以及加热单元（100）。加热单元（100）包括设置于一个储物间室内的金属筒体（110）、用于开闭金属筒体（110）的取放口的门体（120）、以及在筒体（110）内产生电磁波来加热待处理物的电磁发生系统。电磁发生系统至少一部分设置于筒体（110）内或通达至筒体（110）内。其中筒体（110）设置为接地，以将筒体（110）上的高压静电电荷导出，避免安全隐患。

Description

冷藏冷冻装置 技术领域
本发明涉及厨房用具，特别是涉及一种具有电磁波加热单元的冷藏冷冻装置。
背景技术
食物在冷冻的过程中，食物的品质得到了保持，然而冷冻的食物在加工或食用前需要解冻。为了便于用户冷冻和解冻食物，现有技术一般通过电磁波装置来解冻食物。
然而，在电磁波装置工作时，其腔室内形成有高压电磁场，容易产生安全隐患。综合考虑，在设计上需要一种安全系数高的具有电磁波加热单元的冷藏冷冻装置。
发明内容
本发明的一个目的是要提供一种安全系数较高的冷藏冷冻装置。
本发明一个进一步的目的是要提高加热效率。
特别地，本发明提供了一种冷藏冷冻装置，包括：
箱体，限定有至少一个储物间室；
制冷系统，配置为向所述至少一个储物间室提供冷量；以及
加热单元；其特征在于，所述加热单元包括：
金属筒体，设置于一个所述储物间室内，并开设有取放口；
门体，设置于所述取放口处，用于开闭所述取放口；以及
电磁发生系统，至少一部分设置于所述筒体内或通达至所述筒体内，以在所述筒体内产生电磁波来加热待处理物；其中所述筒体设置为接地。
可选地，所述箱体包括内胆、外壳以及设置于所述内胆和外壳之间的保温层，所述外壳包括设置于所述保温层底部的底钢；且所述冷藏冷冻装置还包括：
电源线，配置为接收市电并为所述制冷系统供电，且所述电源线包括与市电中的地线连接并与所述底钢导电连接的接地线；
导线，其一端设置为与所述金属筒体导电连接，另一端设置为与所述底 钢导电连接。
可选地，所述底钢限定有压缩机室，用于放置所述制冷系统的压缩机；且
所述导线预置于所述保温层内，并穿过所述内胆和底钢在所述筒体所在的储物间室内和所述压缩机室内分别留有接线端子。
可选地，所述接线端子设置为通过紧固件分别与所述筒体和所述底钢固定并导电连接。
可选地，所述电磁发生系统包括：
电磁发生模块，配置为产生电磁波信号；和
辐射天线，设置于所述筒体内并与所述电磁发生模块电连接，以根据所述电磁波信号在所述筒体内产生相应频率的电磁波。
可选地，所述电磁发生模块设置于所述压缩机室内，以便于所述电磁发生模块的散热。
可选地，所述冷藏冷冻装置还包括：
散热翅片，设置为与所述电磁发生模块热连接，以增大所述电磁发生模块的散热面积；且
所述压缩机室的两个横向侧壁分别开设有一个通风口，以使环境空气进入所述压缩机室内与所述电磁发生模块和散热翅片热交换。
可选地，所述冷藏冷冻装置还包括：
信号处理及测控电路，其包括：
检测单元，串联在所述电磁发生模块与辐射天线之间，且所述检测单元配置为检测经过其的入射波信号和反射波信号的特定参数；
控制单元，配置为根据所述特定参数计算待处理物的电磁波吸收率；和
匹配单元，串联在所述电磁发生模块与辐射天线之间，且所述匹配单元配置为根据所述电磁波吸收率调节所述电磁发生模块的负载阻抗。
可选地，所述信号处理及测控电路集成于一块电路板，且该电路板设置为与所述筒体导电连接。
可选地，所述电路板与所述辐射天线平行设置，以便于所述信号处理及测控电路与所述辐射天线的电连接。
本发明的冷藏冷冻装置由于将加热单元的筒体接地，可将筒体上的高压静电电荷导出，避免了安全隐患。
进一步地，本发明将加热单元的电磁发生模块设置在压缩机室内，并设置散热翅片为电磁发生模块散热，可避免电磁发生模块过热损坏，延长了使用寿命，降低了故障率。
进一步地，本发明通过匹配单元对电磁发生模块的负载阻抗进行调节，提高电磁发生模块的输出阻抗和负载阻抗的匹配度，可在加热室内放置有固定属性(种类、重量、体积等)不同的食物、或食物在温度变化过程中均有较多的电磁波能量被辐射在加热室内。
根据下文结合附图对本发明具体实施例的详细描述，本领域技术人员将会更加明了本发明的上述以及其他目的、优点和特征。
附图说明
后文将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解，这些附图未必是按比例绘制的。附图中：
图1是根据本发明一个实施例的加热单元的示意性结构图；
图2是图1所示加热单元的示意性剖视图，其中电磁发生模块和供电模块被省略；
图3是图2中区域A的示意性放大视图；
图4是本发明一个实施例的电器室的示意性结构图；
图5是图4中区域B的示意性放大视图；
图6是本发明另一个实施例的电器室的示意性结构图；
图7是图6中区域C的示意性放大视图；
图8是根据本发明一个实施例的冷藏冷冻装置的示意性结构图；
图9是图8中压缩机室的示意性结构图；
图10是从后向前观察加热单元位于储物间室中的部分的示意性结构图；
图11是图10中区域D的示意性放大视图。
具体实施方式
图1是根据本发明一个实施例的加热单元100的示意性结构图；图2是图1所示加热单元100的示意性剖视图，其中电磁发生模块161和供电模块162被省略。参见图1和图2，加热单元100可包括筒体110、门体120、和电磁发生系统。
筒体110可用于放置待处理物，且其前壁或顶壁可开设有取放口，用于取放待处理物。
门体120可通过适当方法与筒体110安装在一起，例如滑轨连接、铰接等，用于开闭取放口。在图示实施例中，加热单元100还包括用于承载待处理物的抽屉140，抽屉140的前端板设置为与门体120固定连接，两个横向侧板通过滑轨与筒体110活动连接。
电磁发生系统可设置为至少一部分设置于筒体110内或通达至筒体110内，以在筒体110内产生电磁波来加热筒体110内的待处理物。
筒体110和门体120可分别设置有电磁屏蔽特征，使门体120在关闭状态时与筒体110导电连接，以防止电磁泄露。
在一些实施例中，电磁发生系统可包括电磁发生模块161、供电模块162、和辐射天线150。
供电模块162可设置为与电磁发生模块161电连接，以为电磁发生模块161提供电能，进而使电磁发生模块161产生电磁波信号。辐射天线150可设置于筒体110内并与电磁发生模块161电连接，以根据电磁波信号产生相应频率的电磁波，对筒体110内的待处理物进行加热。
在一些实施例中，筒体110可由金属制成，以作为接收极接收辐射天线150产生的电磁波。在另一些实施例中，筒体110的顶壁可设置有接收极板，以接收辐射天线150产生的电磁波。
图4是本发明一个实施例的电器室112的示意性结构图；图6是本发明另一个实施例的电器室112的示意性结构图。参见图4和图6，辐射天线150的周缘可由平滑曲线构成，以筒体110内电磁波的分布更加均匀，进而提高待处理物的温度均匀性。其中，平滑曲线指曲线方程为一阶导数连续的曲线。在工程中意味着辐射天线150的周缘无尖角。
参见图2和图4，加热单元100还可包括天线罩130，以将筒体110的内部空间分隔为加热室111和电器室112。待处理物和辐射天线150可分别设置于加热室111和电器室112，以将待处理物和辐射天线150分隔开，防止辐射天线150脏污或误触损坏。
在一些实施例中，天线罩130可由绝缘材料制成，以使辐射天线150产生的电磁波可穿过天线罩130加热待处理物。进一步地，天线罩130可由非透明材料制成，以减少电磁波在天线罩130处的电磁损耗，进而提高对待处 理物的加热速率。前述非透明材料为半透明或不透明的材料。非透明材料可为PP材料、PC材料或ABS材料等。
天线罩130还可用于固定辐射天线150，以简化加热单元100的装配流程、便于辐射天线150的定位安装。具体地，天线罩130可包括分隔加热室111和电器室112的隔板131、以及与筒体110内壁固定连接的裙部132。其中，辐射天线150可设置为与隔板131固定连接。
在一些实施例中，辐射天线150可设置为与天线罩130卡固连接。图5是图4中区域B的示意性放大视图。参见图5，辐射天线150可形成有多个卡接孔151，天线罩130可对应地形成有多个卡扣133，多个卡扣133设置为分别穿过多个卡接孔151与辐射天线150卡接。
在本发明的一个实施例中，卡扣133可由间隔设置且镜像对称的两个倒勾组成。
图7是图6中区域C的示意性放大视图。参见图7，在本发明的另一个实施例中，卡扣133可由垂直于辐射天线150并中部中空的固定部和自固定部的内端缘倾斜于固定部向天线延伸的弹性部组成。
在另一些实施例中，辐射天线150可设置为通过电镀工艺固定于天线罩130。
天线罩130还可包括多个加强筋，该加强筋设置为连接隔板131和裙部132，以提高天线罩130的结构强度。
在一些实施例中，天线罩130可设置于筒体110的底部，以避免因用户放置过高的待处理物损坏天线罩130。辐射天线150可水平地固定于隔板131的下表面。
辐射天线150可设置于筒体110的1/3～1/2高度处，例如1/3、2/5或1/2，以使加热室111的容积较大的同时，使加热室111内的电磁波具有较高的能量密度，进而使待处理物被快速地加热。
图3是图2中区域A的示意性放大视图。参见图1至图3，加热单元100还可包括信号处理及测控电路170。具体地，信号处理及测控电路170可包括检测单元171、控制单元172、和匹配单元173。
检测单元171可串联在电磁发生模块161与辐射天线150之间，并配置为实时检测经过其的入射波信号和反射波信号的特定参数。
控制单元172可配置为从检测单元171获取该特定参数，根据该特定参 数计算入射波和反射波的功率。在本发明中，特定参数可为电压值和/或电流值。
控制单元172可进一步根据入射波和反射波的功率计算待处理物的电磁波吸收率，并将电磁波吸收率与预设吸收阈值比较，当电磁波吸收率小于预设吸收阈值时向匹配单元173发送调节指令。预设吸收阈值可为60～80％，例如60％、70％、或80％。
匹配单元173可串联在电磁发生模块161与辐射天线150之间，并配置为根据控制单元172的调节指令对电磁发生模块161的负载阻抗进行调节，提高电磁发生模块161的输出阻抗和负载阻抗的匹配度，以在加热室111内放置有固定属性(种类、重量、体积等)不同的食物、或食物在温度变化过程中均有较多的电磁波能量被辐射在加热室111内，进而提高加热速率。
在一些实施例中，加热单元100可用于解冻。控制单元172还可配置为根据入射波和反射波的功率计算待处理物的介电系数的虚部变化率，并将虚部变化率与预设变化阈值比较，当待处理物介电系数的虚部变化率大于等于预设变化阈值时向电磁发生模块161发送停止指令，使电磁发生模块161停止工作，解冻程序终止。
预设变化阈值可通过测试不同固定属性的食物在-3～0℃时的介电系数的虚部变化率获得，以使食物具有较好的剪切强度。例如当待处理物为生牛肉时，预设变化阈值可设置为2。
控制单元172还可配置为接收用户指令并根据用户指令控制电磁发生模块161开始工作，其中控制单元172配置为与供电模块162电连接，以从供电模块162获取电能并一直处于待机状态。
在一些实施例中，信号处理及测控电路170可集成于一块电路板，并与辐射天线150平行设置，以便于辐射天线150与匹配模块的电连接。
天线罩130与筒体110对应匹配单元173的位置处可分别开设有散热孔190，以使匹配单元173工作时产生的热量经散热孔190排出。在一些实施例中，信号处理及测控电路170可设置于辐射天线150的后侧。散热孔190可开设于天线罩130和筒体110的后壁。
在一些实施例中，金属筒体110可设置为接地，以将其上的电荷导出，提高加热单元100的安全性。
加热单元100还可包括金属支架180。金属支架180可设置为连接电路 板与筒体110，以支撑电路板并将电路板上的电荷经由筒体110导出。在一些实施例中，金属支架180可由互相垂直的两部分组成。
基于前述任一实施例的加热单元100，本发明还可提供一种冷藏冷冻装置200。图8是根据本发明一个实施例的冷藏冷冻装置200的示意性结构图。参见图8，冷藏冷冻装置200可包括限定有至少一个储物间室的箱体、用于分别开闭至少一个储物间室的至少一个箱门、以及向至少一个储物间室提供冷量的制冷系统。加热单元100的筒体可设置于一个储物间室内。在本发明中，至少一个为一个、两个、或两个以上的更多个。冷藏冷冻装置200可为冰箱或冷柜。
在图示实施例中，储物间室的数量为两个，分别为冷藏间室221和和设置于冷藏间室221下方的冷冻间室222。加热单元100的筒体设置于冷冻间室222内。
制冷系统可包括压缩机241、冷凝器243、蒸发器242和将蒸发器242产生的冷量吹送到冷冻间室222内的制冷风机244、以及为冷凝器243散热的散热风机245。
箱体可包括内胆220、外壳230以及设置于内胆220和外壳230之间的保温层210。外壳230可包括分别位于保温层210横向两侧的两个侧面板、位于保温层210底部的底钢231和位于保温层210后部的后背板。
冷藏冷冻装置200还包括接收市电的电源线(图中未示出)，用于为加热单元100和制冷系统供电。电源线可包括与市电中的地线连接并与底钢231导电连接的接地线，以防止冷藏冷冻装置200漏电。
图9是图8中压缩机室2311的示意性结构图。参见图9，底钢231限定有压缩机室2311，压缩机241、冷凝器243、和散热风机245可设置于压缩机室2311内。压缩机室2311的两个横向侧壁可分别开设有一个通风口2312，以使环境空气进入压缩机室2311内为冷凝器243和压缩机241散热。
在一些实施例中，电磁发生模块161可设置于压缩机室2311内，以利用散热风机245为电磁发生模块161散热。压缩机室2311内还可设置有散热翅片270，设置于电磁发生模块161的上方并与电磁发生模块161热连接，以增大电磁发生模块161的散热面积，提高电磁发生模块161的散热效率。
图10是从后向前观察加热单元位于储物间室中的部分的示意性结构图；图11是图10中区域D的示意性放大视图。参见图4、图10和图11，一部 分金属支架180可设置于电路板的后部并沿横向方向竖直延伸，且其可开设有两个接线口，使检测单元171(或匹配单元173)的接线端子175和控制单元172的接线端子174分别自一个接线口伸出通过信号传输线251与电磁发生模块161电连接。
特别地，筒体110可通过导线252与底钢231导电连接，以将其上的电荷导向底钢231，避免安全隐患。
信号传输线251和导线252可预置于保温层210内，并穿过内胆220和底钢231在冷冻间室222和压缩机室2311内分别留有接线端子，以使信号传输线251和导线252可一同走线，节约装配成本。
导线252的两个接线端子可通过紧固件261和紧固件262分别与筒体110和底钢231导电连接，装配时只需拧紧紧固件便可实现导线252的与筒体110和底钢231稳定可靠地导电连接。
至此，本领域技术人员应认识到，虽然本文已详尽示出和描述了本发明的多个示例性实施例，但是，在不脱离本发明精神和范围的情况下，仍可根据本发明公开的内容直接确定或推导出符合本发明原理的许多其他变型或修改。因此，本发明的范围应被理解和认定为覆盖了所有这些其他变型或修改。

Claims (10)

  1. 一种冷藏冷冻装置，包括：
    箱体，限定有至少一个储物间室；
    制冷系统，配置为向所述至少一个储物间室提供冷量；以及
    加热单元；其中，所述加热单元包括：
    金属筒体，设置于一个所述储物间室内，并开设有取放口；
    门体，设置于所述取放口处，用于开闭所述取放口；以及
    电磁发生系统，至少一部分设置于所述筒体内或通达至所述筒体内，以在所述筒体内产生电磁波来加热待处理物；其中所述筒体设置为接地。
  2. 根据权利要求1所述的冷藏冷冻装置，其中，
    所述箱体包括内胆、外壳以及设置于所述内胆和外壳之间的保温层，所述外壳包括设置于所述保温层底部的底钢；且所述冷藏冷冻装置还包括：
    电源线，配置为接收市电并为所述制冷系统供电，且所述电源线包括与市电中的地线连接并与所述底钢导电连接的接地线；
    导线，其一端设置为与所述金属筒体导电连接，另一端设置为与所述底钢导电连接。
  3. 根据权利要求2所述的冷藏冷冻装置，其中，
    所述底钢限定有压缩机室，用于放置所述制冷系统的压缩机；且
    所述导线预置于所述保温层内，并穿过所述内胆和底钢在所述筒体所在的储物间室内和所述压缩机室内分别留有接线端子。
  4. 根据权利要求3所述的冷藏冷冻装置，其中，
    所述接线端子设置为通过紧固件分别与所述筒体和所述底钢固定并导电连接。
  5. 根据权利要求3所述的冷藏冷冻装置，其中，所述电磁发生系统包括：
    电磁发生模块，配置为产生电磁波信号；和
    辐射天线，设置于所述筒体内并与所述电磁发生模块电连接，以根据所述电磁波信号在所述筒体内产生相应频率的电磁波。
  6. 根据权利要求5所述的冷藏冷冻装置，其中，
    所述电磁发生模块设置于所述压缩机室内，以便于所述电磁发生模块的散热。
  7. 根据权利要求6所述的冷藏冷冻装置，还包括：
    散热翅片，设置为与所述电磁发生模块热连接，以增大所述电磁发生模块的散热面积；且
    所述压缩机室的两个横向侧壁分别开设有一个通风口，以使环境空气进入所述压缩机室内与所述电磁发生模块和散热翅片热交换。
  8. 根据权利要求5所述的冷藏冷冻装置，还包括：
    信号处理及测控电路，其包括：
    检测单元，串联在所述电磁发生模块与辐射天线之间，且所述检测单元配置为检测经过其的入射波信号和反射波信号的特定参数；
    控制单元，配置为根据所述特定参数计算待处理物的电磁波吸收率；和
    匹配单元，串联在所述电磁发生模块与辐射天线之间，且所述匹配单元配置为根据所述电磁波吸收率调节所述电磁发生模块的负载阻抗。
  9. 根据权利要求8所述的冷藏冷冻装置，其中，
    所述信号处理及测控电路集成于一块电路板，且该电路板设置为与所述筒体导电连接。
  10. 根据权利要求9所述的冷藏冷冻装置，其中，
    所述电路板与所述辐射天线平行设置，以便于所述信号处理及测控电路与所述辐射天线的电连接。
PCT/CN2019/124873 2019-01-04 2019-12-12 冷藏冷冻装置 Ceased WO2020140722A1 (zh)

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