WO2016197902A1 - Dispositif de chauffage d'eau équilibré en gaz - Google Patents

Dispositif de chauffage d'eau équilibré en gaz Download PDF

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Publication number
WO2016197902A1
WO2016197902A1 PCT/CN2016/085041 CN2016085041W WO2016197902A1 WO 2016197902 A1 WO2016197902 A1 WO 2016197902A1 CN 2016085041 W CN2016085041 W CN 2016085041W WO 2016197902 A1 WO2016197902 A1 WO 2016197902A1
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WO
WIPO (PCT)
Prior art keywords
fan
variable speed
gas water
motor
water heater
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/CN2016/085041
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English (en)
Chinese (zh)
Inventor
邱步
朱高涛
朱立夫
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.)
AO Smith China Water Heater Co Ltd
Original Assignee
AO Smith China Water Heater 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 AO Smith China Water Heater Co Ltd filed Critical AO Smith China Water Heater Co Ltd
Publication of WO2016197902A1 publication Critical patent/WO2016197902A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium

Definitions

  • the invention relates to a gas hot water device, in particular to a balanced gas water heater.
  • Gas-fired water heaters can be mainly divided into flue-type, strong-discharge type and balanced type.
  • the air required for combustion of flue-type and strong-discharge type gas-fired water heaters comes from indoors, and consumes a large amount of oxygen in the combustion process.
  • the air required for the combustion of the balanced gas water heater is from the outside, and the exhaust gas is also discharged to the outside. Therefore, the balanced gas water heater has higher safety than the flue gas type and the strong exhaust gas water heater. Sex.
  • such a balanced system that uses outdoor air intake and exhausts exhaust gas after combustion to the outside is widely used in the field of wall-hung boilers, and gas water heaters are gradually being promoted.
  • the balanced gas water heater generally has a sealed chamber in which a combustion system and a heat exchange system are installed.
  • the exhaust gas generated by the combustion is discharged to the outside through the exhaust pipe under the driving of the fan placed in the sealed chamber.
  • a negative pressure environment is formed in the sealed chamber, and the outdoor environment is formed.
  • Fresh air is drawn into the sealed chamber through the intake manifold. This part of the fresh air from the outside ensures that the balanced gas water heater maintains normal combustion.
  • variable-speed fans are commonly used in the industry. Instead of a fixed speed fan, the variable speed fan can be adjusted according to the speed. Different fan speeds can be matched in different combustion states. Therefore, the energy consumption can be reduced to a large extent, and the noise can be reduced.
  • the balanced gas water heater has an inner sealed chamber, which contains a combustion system and a heat exchange system.
  • the combustion system and the heat exchange system radiate a large amount of heat during operation, which makes The temperature in the sealed chamber is relatively high, generally can reach 80 °C, and the severe working conditions may even reach 100 °C.
  • most of the fan is located inside the closed chamber.
  • the structure placed inside the sealed chamber keeps the variable speed fan at a relatively high temperature for a long time. After the variable speed fan is used, the electronic components of the motor control device of the variable speed fan generate heat during operation, and this part of the heat will be sealed.
  • the superposition of heat in the chamber causes a large increase in the temperature of the motor control board.
  • the motor of the fan generates more heat in the winding of the motor during its own operation, which also increases the risk of failure of the fan, which is common to the above factors.
  • the variable speed fan easily accumulates heat beyond the limit of the variable speed fan during operation, which causes it to fail. Therefore, the above problems have great risks to the application of the variable speed fan in the balanced gas water heater to the reliability and life of the variable speed fan itself and the whole machine.
  • the technical problem to be solved by the present invention is to provide a balanced gas water heater device to ensure the reliability of the operation of the whole machine.
  • a balanced gas water heater includes:
  • variable speed fan a heat exchange device, and a combustion device disposed inside the sealed chamber
  • variable speed fan has a fan volute
  • the intake passage is in communication with the combustion device and the heat exchange device, the heat exchange device is in communication with the fan volute inlet, and the fan volute outlet is connected to the exhaust passage;
  • the variable speed fan further includes: a drainage device and a variable speed motor disposed outside the volute of the fan, the variable speed motor including a winding, the drainage device capable of introducing at least a portion of the air entering the intake passage into the variable speed motor And through the windings.
  • variable speed motor includes a motor housing having a first end cover and a second end cover, the first end cover and the second end cover are provided with through holes, and the winding is disposed in the motor housing The airflow introduced by the drainage device can pass through the through holes in the first end cover and the second end cover.
  • the first end cover and the second end cover are oppositely disposed.
  • the first end cover of the motor housing faces away from the fan volute, and the second end cover of the motor housing faces the fan volute.
  • the drainage device is an axial fan, and the axial fan is disposed between the motor casing and the fan volute.
  • the drainage device is an axial fan, and the axial fan is disposed on a side of the variable speed motor facing away from the volute of the fan.
  • cooling fan disposed between the variable speed motor and the fan volute, the cooling fan enabling airflow flowing through the winding from between the variable speed motor and the fan volute Space is scattered.
  • variable speed motor is provided at the outlet of the intake passage.
  • a fan control device is further included, the fan control device being disposed outside the sealed chamber.
  • variable speed fan includes a Hall element electrically connected to the fan control device, and the Hall element is disposed inside the motor housing.
  • the intake passage surrounds the exhaust passage arrangement.
  • the intake passage and the exhaust passage are coaxially disposed and located at the top of the sealed chamber.
  • the intake passage and the exhaust passage are separately disposed at the top of the sealed chamber.
  • variable speed fan includes an impeller connected to the variable speed motor via a motor shaft, the variable speed motor shaft being perpendicular to an axis of the intake passage.
  • variable speed fan By providing a drainage device on the variable speed fan and opening a hole in the casing of the variable speed motor, air entering the sealed chamber can enter the interior of the variable speed motor to cool the components inside the variable speed motor, and further pass
  • the fan control device is externally disposed, which prevents the fan control device from blocking the airflow entering the variable speed motor, so that the air can smoothly enter the variable speed motor and pass through the winding and then flow out of the motor under the action of the drainage device, thereby forming a fan.
  • the cooling "wind system" while the fan control device is disposed outside the sealed chamber, avoids the influence of the high temperature environment in the sealed chamber on the electronic components on the fan control device, and improves the reliability and life of the variable speed fan;
  • the cooling fan rapidly discharges the high-temperature air flowing out of the motor from the variable speed motor and the fan volute to the sealed chamber.
  • the flow rate of the cold air in the casing of the variable speed motor can be further increased, thereby increasing the cooling rate; It can avoid the temperature rise of the motor caused by the high temperature air accumulated here.
  • variable speed motor is disposed at the outlet of the intake passage, so that the cold air discharged from the outlet of the intake passage can be directly blown to the motor to cool the motor.
  • FIG. 1 is a schematic structural view of a specific embodiment of a balanced gas water heater according to the present application.
  • Figure 2 is a perspective view of the variable speed fan of Figure 1.
  • FIG. 3 is another perspective view of the variable speed fan of FIG. 1.
  • FIG. 4 is a schematic structural view of a first end cover of the motor of the variable speed fan of FIG. 1.
  • FIG. 5 is a schematic structural view of a second end cover of the motor of the variable speed fan of FIG. 1.
  • FIG. 6 is a schematic structural view of another embodiment of a balanced gas water heater according to the present application.
  • the reference numerals of the above drawings are: 1, housing; 11, sealed chamber; 2, intake passage; 3, exhaust passage; 4, variable speed fan; 41, fan volute; 411, intake end; , exhaust end; 42, variable speed motor; 421, first end cover; 4211, through hole of the first end cover; 422, second end cover; 4221, through hole of the second end cover; 43, axial flow fan; 44, cooling fan; 45, protective cover; 451, through hole; 46, fan control device; 5, heat exchange device; 6, burning device; 7, collecting hood.
  • the present invention discloses a balanced gas water heater, comprising a sealed chamber 11, an intake passage 2 and a smoke exhaust passage 3 disposed on the sealed chamber 11, and a shifting speed disposed inside the sealed chamber 11.
  • the intake passage 2 is in communication with the combustion device 6 and the heat exchange device 5 in sequence, the heat exchange device 5 and
  • the fan volute 41 is connected to the inlet, and the outlet of the fan volute 41 is connected to the exhaust passage 3;
  • the variable speed fan 4 further includes: a drainage device and a variable speed motor 42 disposed outside the fan volute 41,
  • the variable speed motor 42 includes a winding that can introduce air entering the intake passage 2 at least partially into the variable speed motor 42 and through the winding.
  • the variable speed motor 42 is a direct current motor.
  • the variable speed motor 42 can also be an AC variable speed motor.
  • the balanced gas water heater of the present application can introduce air entering the sealed chamber 11 into the variable speed motor 42 through the drain device, so that the temperature entering the sealed chamber 11 is low.
  • the air exchanges heat with the windings of the variable speed motor 42 to lower the temperature of the windings of the variable speed motor 42.
  • Fig. 1 is a schematic view showing a specific structure of a balanced gas water heater of the present application.
  • the balanced gas water heating device comprises a casing 1 , a sealed chamber 11 is formed in the casing 1 , an intake passage 2 and a smoke exhaust passage 3 are arranged on the casing 1 , a variable speed fan 4 and a heat exchange device 5.
  • the combustion device 6 and the collecting hood 7 are located in the sealed chamber 11.
  • air enters the sealed chamber 11 from the intake passage 2, and flows into the combustion device 6 under the driving of the variable speed fan 4 to participate in combustion, and the high-temperature flue gas generated after the combustion passes through the heat exchange device 5 and the collecting hood.
  • the variable speed fan 4 is entered, and finally discharged from the exhaust passage 3 to the outside under the driving of the variable speed fan 4.
  • the intake passage 2 and the exhaust passage 3 may be respectively disposed at the top of the sealed chamber 11 .
  • the intake passage 2 is coaxially sleeved outside the exhaust passage 3 and surrounds the exhaust passage 3 .
  • the intake passage 2 and/or the exhaust passage 3 may not be disposed at the top of the sealed chamber 11 as long as the intake passage 2 can introduce outdoor air into the sealed chamber 11 to exhaust smoke.
  • the passage 3 can discharge the flue gas generated by the combustion out of the sealed chamber 11.
  • the balanced gas water heater further includes a variable speed fan 4.
  • the variable speed fan 4 includes a variable speed motor 42, an impeller, a fan volute 41 that is disposed outside the impeller, an intake end 411 of the fan volute 41, and the heat exchange device. 5 communicating, the exhaust end 412 of the fan volute 41 passes out of the sealed chamber 11 and communicates with the exhaust passage 3.
  • the impeller of the variable speed fan 4 is rotating, the flue gas generated by the combustion flows into the exhaust duct 3 through the fan volute 41.
  • the balanced gas water heater further includes a collecting hood 7 disposed between the variable speed fan 4 and the heat exchange device 5 and having one end connected to the heat exchange device 5, The other end is in communication with the intake end 411 of the variable speed fan 4, and the fume collecting hood 7 can collect the flue gas after the heat exchange and discharge the flue gas through the variable speed fan 4.
  • the variable speed fan 4 also includes a drainage device. The draining device is disposed inside the sealed chamber 11 and is adapted to the variable speed motor 42 to introduce at least a portion of the cold air entering the sealed chamber 11 through the intake passage into the variable speed motor 42. In the present embodiment, referring to FIGS.
  • the variable speed motor 42 includes a motor housing having a first end cap 421 and a second end cap 422, the first end cap 421 and the second end.
  • the cover 422 is provided with a through hole, and the winding is disposed in the motor casing, and the airflow introduced by the drainage device can pass through the through hole 4211 on the first end cover 421 and the second end cover 422 Through hole 4221.
  • the first end cover 421 of the variable speed motor 42 faces away from the fan volute 41, and the second end of the variable speed motor 42 Cover 422 faces the fan volute 41.
  • the flow guiding device includes an axial flow fan 43 disposed on a side of the variable speed motor 42 facing away from the fan volute 41, that is, the air sucked by the axial flow fan 43 from the motor housing
  • a through hole 4211 in the one end cover 421 enters the inside of the motor casing and is discharged from the through hole 4221 on the second end cover 422 of the motor casing after passing through the winding of the variable speed motor 42.
  • the cold air entering the motor casing exchanges heat with the windings of the variable speed motor 42 to carry heat from the windings of the variable speed motor 42 away from the motor casing.
  • the through hole 4211 of the first end cover 421 and the second end cover 422 are oppositely disposed, and the airflow introduced through the drainage device is through the through hole on the first end cover 421. 4211 flows into the motor casing and flows out of the motor casing from the through hole 4221 on the second end cover 422.
  • the first end cover 421 of the motor housing faces away from the fan volute 41
  • the second end cover 422 of the motor housing faces the fan volute 41 into the motor
  • the cold air within the outer casing can generally pass linearly through the windings of the variable speed motor 42 to increase the flow rate of air within the motor casing and enhance the cooling effect.
  • variable speed fan 4 further includes a protective cover 45 which is disposed outside the motor casing and mainly functions to prevent dust introduced from the air entering from the air inlet passage 2 from falling into the motor. And the surface of the drainage device affects its performance.
  • the protective cover 45 is provided with a plurality of through holes 451 which function mainly for the air to flow to the variable speed motor 42.
  • the balanced gas water heater may further include a heat dissipation fan 44 disposed between the variable speed motor 42 and the fan volute 41, and the heat dissipation fan 44 can flow through the winding
  • the high temperature airflow is dissipated from the space between the variable speed motor 42 and the fan volute 41.
  • the setting of the cooling fan can further increase the flow rate of the cold air in the motor casing, thereby increasing the cooling rate; on the other hand, the temperature rise of the high temperature air accumulated therein can be avoided.
  • the motor shaft of the variable speed motor 42 is perpendicular to the axis of the intake passage 2, so that cold air flowing out from the outlet of the intake passage 2 can be blown toward the motor and the fan worm
  • the space between the shells blows off the high-temperature air flowing out of the variable speed motor 42 and accumulated therein to reduce the temperature rise of the high-temperature air to the motor.
  • the balanced gas water heater further includes a fan control unit 46 located outside the sealed chamber 11 to remove the fan control unit 46 from the interior of the variable speed motor 42 and place it in the sealed chamber 11
  • the external part can not only solve the problem of failure of the electronic components on the fan control device running in the high temperature sealed cavity for a long time, but also can prevent the fan control device 46 from blocking the airflow entering the internal variable speed motor 42 so that the air is drained.
  • the device smoothly enters the variable speed motor 42 and passes through the winding to flow out of the variable speed motor 42. This formed a cooling "wind system.”
  • the balanced gas water heater further includes a Hall element for monitoring the variable speed motor 42 inside the variable speed motor 42, wherein the Hall element and the fan control device pass the wire Electrical connection. Retaining the Hall element inside the variable speed motor 42 is primarily to ensure the reliability of the variable speed fan speed monitoring.
  • the axial fan 43 is disposed between the motor housing and the fan volute 41. Similar to the previous embodiment, the air introduced by the axial fan 43 enters the inside of the motor casing from the through hole 4211 in the first end cover 421 of the motor casing, and flows through the winding of the variable speed motor 42. Thereafter, it flows out from the through hole 4221 on the second end cover 422 of the motor casing.
  • the through hole 4211 on the first end cover 421 and the through hole 4221 on the second end cover 422 may be 2, 3, 4 or even more to further increase the entry.
  • the flow of air inside the motor casing increases the cooling effect.
  • the intake passage 2 may be disposed opposite to the shifting motor 42, so that the cold air discharged from the outlet of the intake passage 2 is directly blown to the shifting motor 42, which is not only convenient.
  • the drainage device performs drainage and can cool the motor.
  • the intake passage 2 and the exhaust passage 3 are at the top of the sealed chamber 11 and are offset from each other.
  • the variable speed motor 42 is disposed opposite to the air outlet of the intake passage 2.
  • the relative arrangement here means that the outlet of the intake duct is substantially opposite to the through hole on the motor casing, and the rotating shaft of the variable speed motor 42 is parallel to the exhaust passage 3, which can improve the flow of cold air through the motor. The rate increases the cooling effect.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un dispositif de chauffage d'eau équilibré en gaz, comprenant une chambre scellée (11), et un conduit d'entrée d'air (2) et un conduit d'évacuation de fumée (3) qui sont situés sur la chambre scellée (11) ; et un ventilateur à vitesse variable (4), un dispositif d'échange de chaleur (5) et un dispositif de combustion (6) qui sont situés à l'intérieur de la chambre scellée (11). Le ventilateur à vitesse variable (4) a une volute de ventilateur (41). Le conduit d'entrée d'air (2) est en communication avec le dispositif de combustion (6) et le dispositif d'échange de chaleur (5) successivement, le dispositif d'échange de chaleur (5) est en communication avec une entrée de la volute de ventilateur (41), et une sortie de la volute de ventilateur (41) est en communication avec le conduit d'évacuation de fumée (3). Le ventilateur à vitesse variable (4) comprend en outre : un dispositif de drainage et un moteur à vitesse variable (42) qui sont situés sur une partie externe de la volute de ventilateur (41), le moteur à vitesse variable (42) comprenant un enroulement, le dispositif de drainage peut conduire au moins une partie de l'air entrant dans le conduit d'entrée d'air (2) vers le moteur à vitesse variable (42) et l'amener à passer à travers l'enroulement, et un dispositif de commande de ventilateur (46) est situé sur une partie externe de la chambre scellée. L'application de la structure permet à l'air entrant dans la chambre scellée (11) de s'écouler à l'intérieur du ventilateur et de passer à travers l'enroulement de ventilateur, et le dispositif de commande de ventilateur (46) est situé à l'extérieur de la chambre scellée interne pour améliorer la durée de vie d'éléments électroniques du dispositif de commande de ventilateur (46), en améliorant ainsi la fiabilité et la durée de vie de l'ensemble de la machine.
PCT/CN2016/085041 2015-06-09 2016-06-07 Dispositif de chauffage d'eau équilibré en gaz Ceased WO2016197902A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510314396.1 2015-06-09
CN201510314396.1A CN104913486B (zh) 2015-06-09 2015-06-09 平衡式燃气热水装置

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WO2016197902A1 true WO2016197902A1 (fr) 2016-12-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110500768A (zh) * 2019-08-07 2019-11-26 武汉海尔热水器有限公司 燃气采暖设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104913486B (zh) * 2015-06-09 2017-04-19 艾欧史密斯(中国)热水器有限公司 平衡式燃气热水装置
CN106403256A (zh) * 2016-09-05 2017-02-15 芜湖美的厨卫电器制造有限公司 燃气热水器
CN106369808A (zh) * 2016-11-09 2017-02-01 艾欧史密斯(中国)热水器有限公司 平衡式燃气热水装置
CN107762938A (zh) * 2017-12-11 2018-03-06 泰兴市宏伟机电环保科技有限公司 一种具有空气清洁功能的离心风机

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JP2000356401A (ja) * 1999-06-14 2000-12-26 Paloma Ind Ltd 給湯器
CN200958847Y (zh) * 2006-10-17 2007-10-10 中山华帝燃具股份有限公司 一种新型平衡式燃气热水器
US20090133642A1 (en) * 2007-11-22 2009-05-28 Noritz Corporation Latent heat recovery-type water heater
CN204006682U (zh) * 2014-07-31 2014-12-10 银川艾尼工业科技开发有限公司 一种冷凝式燃气采暖热水炉
CN104913486A (zh) * 2015-06-09 2015-09-16 艾欧史密斯(中国)热水器有限公司 平衡式燃气热水装置
CN204806649U (zh) * 2015-06-09 2015-11-25 艾欧史密斯(中国)热水器有限公司 平衡式燃气热水装置

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Publication number Priority date Publication date Assignee Title
JP2000356401A (ja) * 1999-06-14 2000-12-26 Paloma Ind Ltd 給湯器
CN200958847Y (zh) * 2006-10-17 2007-10-10 中山华帝燃具股份有限公司 一种新型平衡式燃气热水器
US20090133642A1 (en) * 2007-11-22 2009-05-28 Noritz Corporation Latent heat recovery-type water heater
CN204006682U (zh) * 2014-07-31 2014-12-10 银川艾尼工业科技开发有限公司 一种冷凝式燃气采暖热水炉
CN104913486A (zh) * 2015-06-09 2015-09-16 艾欧史密斯(中国)热水器有限公司 平衡式燃气热水装置
CN204806649U (zh) * 2015-06-09 2015-11-25 艾欧史密斯(中国)热水器有限公司 平衡式燃气热水装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110500768A (zh) * 2019-08-07 2019-11-26 武汉海尔热水器有限公司 燃气采暖设备

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