CN107975887B - Device for slowing down frosting of outdoor unit of air conditioner and air conditioner - Google Patents

Device for slowing down frosting of outdoor unit of air conditioner and air conditioner Download PDF

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Publication number
CN107975887B
CN107975887B CN201711046369.6A CN201711046369A CN107975887B CN 107975887 B CN107975887 B CN 107975887B CN 201711046369 A CN201711046369 A CN 201711046369A CN 107975887 B CN107975887 B CN 107975887B
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China
Prior art keywords
heat
air
outdoor
air conditioner
heat exchanger
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CN201711046369.6A
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CN107975887A (en
Inventor
李波
王飞
连建春
秦东梅
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Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Zhijia Co Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Zhijia Co Ltd
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Priority to CN201711046369.6A priority Critical patent/CN107975887B/en
Publication of CN107975887A publication Critical patent/CN107975887A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass

Abstract

The invention discloses a device for slowing down frosting of an outdoor unit of an air conditioner, and belongs to the technical field of air conditioners. The device comprises: the heat storage device is wrapped on the outer side of at least part of the machine body of the compressor; the heat dissipation piece is arranged at the outdoor heat exchanger and is provided with a plurality of heat dissipation holes; the air supply pipe is communicated with the heat storage device and the heat radiating piece; and the driving device is used for driving the air flow from the heat storage device to the heat dissipation member through the air supply pipe. The device for slowing down frosting of the outdoor unit of the air conditioner can convey the air with higher temperature heated at the periphery of the compressor to the outdoor heat exchanger, so that the waste heat generated when the compressor works can be utilized to defrost and melt ice for the outdoor heat exchanger, micro frost condensed on the outdoor heat exchanger can be effectively eliminated, the heat exchange efficiency of the outdoor heat exchanger is ensured, and the overall heating performance of the air conditioner is improved.

Description

Device for slowing down frosting of outdoor unit of air conditioner and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a device for slowing down frosting of an air conditioner outdoor unit and an air conditioner.
Background
Along with the improvement of living standard of people, air conditioning equipment has also gone into thousands of households, the use of domestic air conditioners and central air conditioners is more and more common, the requirement of users on the comfort level of the air conditioners is more and more high, the problems existing in the use process of the air conditioners are also gradually exposed, and one of the problems is the problem that an outdoor unit of the air conditioner is frosted and frozen when the air conditioner operates in severe cold climate.
When the air conditioner operates in a low-temperature area or an area with large wind and snow, the condensed water flow on the outer surface of the condenser of the outdoor unit can drop on the base plate, the condenser and the base plate of the air conditioner can be frozen under the condition that the air conditioner operates for a long time, the condensed ice layer on the outdoor unit can obstruct the heat exchange between the internal refrigerant and the outdoor environment, the refrigerating efficiency of the air conditioner is reduced, in order to ensure the heating effect of the air conditioner, the air conditioner has to operate with increased power, and the extra consumption of electric energy and the use cost of a user are increased.
Disclosure of Invention
The invention provides a device for slowing down frosting of an air conditioner outdoor unit and an air conditioner, and aims to solve the problem of frosting and icing when the air conditioner outdoor unit operates in winter or in severe cold climate. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of the present invention, there is provided an apparatus for reducing frosting of an outdoor unit of an air conditioner, the outdoor unit including a compressor and an outdoor heat exchanger, the apparatus comprising: the heat storage device is wrapped on the outer side of at least part of the machine body of the compressor; the heat dissipation piece is arranged at the outdoor heat exchanger and is provided with a plurality of heat dissipation holes; the air supply pipe is communicated with the heat storage device and the heat radiating piece; and the driving device is used for driving the air flow from the heat storage device to the heat dissipation member through the air supply pipe.
In an alternative technical scheme, the heat dissipation member is of a plate-shaped or tubular structure, and is erected on at least one side of the outdoor heat exchanger.
In an optional technical scheme, the outdoor heat exchanger is provided with a U-shaped heat exchange tube section, the heat radiating piece is provided with heat radiating flat tubes corresponding to the U-shaped heat exchange tube section in position, and one or more heat radiating flat tubes are embedded and inserted in a plate-shaped or tubular structure.
In an optional technical scheme, the heat dissipation holes comprise heat dissipation micropores uniformly distributed in each heat dissipation flat pipe.
In an alternative embodiment, the heat storage device has a housing made of a heat storage material, which is disposed around at least a part of the compressor body.
In an optional technical scheme, an air inlet and an air outlet are arranged on the housing, and the air outlet is communicated with the air supply pipe.
In an optional technical scheme, the air outlet is positioned vertically above the air inlet.
In an optional technical scheme, the driving device comprises a blower, and an air conveying opening of the blower is communicated with the air inlet.
In an optional technical solution, the apparatus further includes: a sensor for detecting an outdoor ambient temperature; and the controller is electrically connected with the sensor and the driving device and used for controlling the driving device to be started to operate when the outdoor environment temperature detected by the sensor meets the defrosting temperature condition.
According to the second aspect of the invention, the invention also provides an air conditioner, and an outdoor unit of the air conditioner is provided with any one of the devices for reducing the frosting of the outdoor unit of the air conditioner.
The device for slowing down frosting of the outdoor unit of the air conditioner can convey the air with higher temperature heated at the periphery of the compressor to the outdoor heat exchanger, so that the waste heat generated when the compressor works can be utilized to defrost and melt ice for the outdoor heat exchanger, micro frost condensed on the outdoor heat exchanger can be effectively eliminated, the heat exchange efficiency of the outdoor heat exchanger is ensured, and the overall heating performance of the air conditioner is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a partial structural view illustrating an outdoor unit of an air conditioner according to an exemplary embodiment of the present invention;
fig. 2 is a schematic view of the structure of a heat sink of the present invention, shown according to an exemplary embodiment.
11, an outdoor heat exchanger; 12. a compressor; 21. a housing; 22. an air inlet; 23. an air outlet; 3. a heat sink; 31. flat heat-dissipating tubes; 32. heat dissipation micropores; 5. a drive device; 6. a sensor.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. As for the methods, products and the like disclosed by the embodiments, the description is simple because the methods correspond to the method parts disclosed by the embodiments, and the related parts can be referred to the method parts for description.
Fig. 1 is a partial schematic structural view of an outdoor unit of an air conditioner according to an embodiment of the present invention.
As shown in fig. 1, the outdoor unit of the air conditioner of the present invention mainly includes a compressor 12, an outdoor heat exchange chamber and a device for reducing frosting of the outdoor unit of the air conditioner, wherein the device mainly includes a heat storage device, a heat sink 3, an air supply pipe and a driving device 5, etc., and the device can deliver hot high-temperature air heated by residual heat of the compressor 12 to an outdoor heat exchanger 11, and remove frosting in a small area of the outer surface of the outdoor heat exchanger 11 in time, so as to prevent the frosting problem from further worsening, thereby achieving the purposes of delaying frosting, prolonging heating operation time and improving low-temperature heating effect.
Specifically, the heat storage device is wrapped around at least a portion of the compressor 12, for example, in an embodiment, the heat storage device includes a casing 21 having a cylindrical structure, an inner diameter of the cylindrical structure is greater than or equal to an outer diameter of the compressor 12, and the casing 21 is sleeved outside the compressor 12 and forms a sealed fit with an outer casing of the compressor 12.
Preferably, when the compressor 12 performs a compression operation, the compression cavity portion of the compressor generates more heat, so that the housing 21 of the thermal storage device of the present invention can be sleeved on the compression cavity portion of the compressor 12. It should be understood that the structural form of the heat storage device of the present invention is not limited to the cylinder structure, and those skilled in the art can adapt the structure of the heat storage device according to the need of a sealed fit, so that a sealed air circulation space can be formed between the heat storage device and the compressor 12, so as to reduce the loss of heat emitted by the compressor 12 and improve the recovery efficiency of the heat storage device on the waste heat of the compressor 12, and therefore, the present invention should also be covered in the protection scope of the present invention.
In the embodiment of the present invention, the thermal storage device is made of a thermal storage material, for example, the thermal storage material is rolled into the aforementioned cylindrical structure, and optionally, the thermal storage material is made of an adsorption thermal storage material with a porous structure, such as zeolite, silica gel, and the like.
In this way, the interior of the tubular structure made of heat-accumulating material will form a porous channel for the flow of air, facilitating the flow of air of different temperatures within the heat-accumulating material or within the space between the tubular structure and the outer shell of the compressor 12.
In the embodiment of the present invention, the heat sink 3 is disposed at the outdoor heat exchanger 11 and has a plurality of heat dissipation holes, the heat sink 3 has an air flow channel, and the air flow channel is communicated with the plurality of heat dissipation holes; the heat dissipation member 3 is communicated with the heat storage device through the blast pipe, so that heated hot air in the heat storage device can be conveyed to an air flow channel of the heat dissipation member 3 through the blast pipe, and then the hot air is blown out from the heat dissipation holes, so that the ambient temperature of the outdoor heat exchanger 11 can be changed through the hot air blown out from the heat dissipation holes, the ambient temperature of the outdoor heat exchanger 11 is increased, frost condensed on the outer surface of the outdoor heat exchanger 11 is melted or sublimated after absorbing the heat of the ambient temperature, and the purpose of eliminating the frosting on the outer surface of the outdoor unit can be achieved.
Fig. 2 is a schematic structural view of the heat sink 3 of the present invention shown according to an exemplary embodiment.
In the embodiment, the heat dissipation member 3 is a plate-shaped or tubular structure, and the heat dissipation member 3 is erected on the inner side, the outer side or both the inner side and the outer side of the outdoor heat exchanger 11, and can be determined according to actual defrosting requirements.
In the embodiment, the outdoor heat exchanger 11 has a U-shaped heat exchange tube section at a position where frost is relatively easy to form or at a position where frost is relatively severe, and preferably, the heat sink 3 has flat heat dissipation tubes 31 corresponding to the U-shaped heat exchange tube section, and one or more flat heat dissipation tubes 31 are inserted into the plate-shaped or tubular structure.
In the embodiment, the heat dissipation holes include heat dissipation micro holes 32 uniformly distributed on each heat dissipation flat tube 31.
In the embodiment, the air in the device for slowing down the frosting of the outdoor unit of the air conditioner flows from the heat storage device to the heat dissipation member 3, so that in order to ensure the continuous running of the defrosting process of the hot air, the housing 21 of the heat storage device is respectively provided with the air outlet 23 and the air inlet 22, wherein the air outlet 23 is communicated with the blast pipe, and the hot air in the heat storage device is conveyed into the blast pipe through the air inlet 22; the air inlet 22 is connected to the external environment of the thermal storage device to replenish the air flowing out through the air outlet 23 from the external environment.
Thus, the flow sequence of air within the thermal storage device is: the outside air enters the heat storage material porous space of the heat storage device or the space between the cylindrical structure and the outer shell of the compressor 12 through the air inlet 22, and then the hot air heated by the residual heat of the compressor 12 is discharged into the air supply duct through the air outlet 23. In this way, the heat storage device can continuously supplement cold air from the air inlet 22 and convey heated hot air to the heat sink 3 through the blast pipe, so as to continuously defrost and melt ice for the outdoor heat exchanger 11.
Preferably, the air outlet 23 is located vertically above the air inlet 22, so that the heated hot air gradually floats to the upper portion of the housing 21 due to its reduced density and enters the air supply duct through the air outlet 23, thereby reducing the influence of the cold air newly supplied from the air inlet 22 on the temperature reduction of the heated hot air.
In an embodiment, in order to provide the hot air delivery efficiency of the device for reducing the frosting of the outdoor unit of the air conditioner, the device of the present invention is further provided with a driving device 5 for driving the air flow from the heat storage device to the heat sink 3 through the blast pipe.
Optionally, the driving device 5 includes a blower, in an embodiment, an air delivery opening of the blower is communicated with the air inlet 22, and the blower can suck low-temperature air in the external environment under a negative pressure acting force generated by rotation of its blades and blow the low-temperature air from the air delivery opening to the air inlet 22 of the thermal storage device, so as to increase the air supply amount of the thermal storage device. Meanwhile, by changing the rotating speed of the blower, the air supply speed and the air supply quantity of the device for slowing down the frosting of the outdoor unit of the air conditioner can be changed, so that different defrosting requirements of the outdoor heat exchanger 11 are met.
In an embodiment, the device for reducing frosting of the outdoor unit of the air conditioner further comprises a sensor 6 and a controller, wherein the sensor 6 is used for detecting the outdoor environment temperature; the controller is respectively electrically connected with the sensor 6 and the driving device 5, and the controller is used for controlling the driving device 5 to be started to operate when the outdoor environment temperature detected by the sensor 6 meets the defrosting temperature condition. Therefore, through the detection and judgment process of the sensor 6 and the controller, the defrosting function can be started under the condition that the outdoor heat exchanger 11 is at a temperature at which frosting is likely to occur, and the air conveying and supplying operation of the driving device 5 is started to alleviate the frosting problem of the outdoor heat exchanger 11; meanwhile, the defrosting function can be controlled to be turned off when the outdoor heat exchanger 11 is not at the temperature condition where frosting is likely to occur, and the driving device 5 is stopped, so that the extra power consumption of the air conditioner is reduced.
The invention also provides an air conditioner, and an outdoor unit of the air conditioner is provided with the device for slowing down the frosting of the outdoor unit of the air conditioner in any one of the embodiments. The air conditioner applying the device can quickly defrost the heat exchanger when slight frosting occurs, delay the frosting time and improve the low-temperature heating effect; meanwhile, the outdoor heat exchanger 11 absorbs heat from the external environment thereof in the heating mode, so that the device of the invention can also convey the waste heat of the compressor 12 to the outdoor heat exchanger 11, thereby improving the waste heat utilization efficiency of the compressor 12 and enhancing the heating performance of the air conditioner.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (8)

1. An apparatus for reducing frosting on an outdoor unit of an air conditioner, the outdoor unit including a compressor and an outdoor heat exchanger, the apparatus comprising:
the heat storage device is provided with a housing made of a heat storage material, the housing is wrapped on the outer side of at least part of the machine body of the compressor, and the heat storage material is an adsorption heat storage material with a porous structure;
the heat dissipation piece is arranged at the outdoor heat exchanger and is provided with a plurality of heat dissipation holes;
the air supply pipe is communicated with the heat storage device and the heat radiating piece;
a driving device for driving an air flow from the heat storage device to the heat sink via the blast pipe;
a sensor for detecting an outdoor ambient temperature;
and the controller is electrically connected with the sensor and the driving device and used for controlling the driving device to be started to operate when the outdoor environment temperature detected by the sensor meets the defrosting temperature condition.
2. The apparatus of claim 1, wherein the heat sink is a plate or tube structure that spans at least one side of the outdoor heat exchanger.
3. The apparatus of claim 2 wherein said outdoor heat exchanger has U-shaped heat exchange tube segments, said heat sink having flat heat sink tubes positioned to correspond to said U-shaped heat exchange tube segments, one or more of said flat heat sink tubes being inserted over said plate or tube like structure.
4. The apparatus of claim 3, wherein the heat dissipation holes comprise heat dissipation micro-holes uniformly distributed on each heat dissipation flat tube.
5. The device as claimed in claim 1, wherein the housing is provided with an air inlet and an air outlet, and the air outlet is communicated with the air supply pipe.
6. The apparatus of claim 5, wherein the air outlet is located vertically above the air inlet.
7. The device of claim 1, wherein the driving device comprises a blower, and an air delivery opening of the blower is communicated with the air inlet.
8. An air conditioner characterized in that an outdoor unit of the air conditioner is provided with the device for reducing frosting of the outdoor unit of the air conditioner as claimed in any one of claims 1 to 7.
CN201711046369.6A 2017-10-31 2017-10-31 Device for slowing down frosting of outdoor unit of air conditioner and air conditioner Active CN107975887B (en)

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Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
CN110608510B (en) * 2019-08-21 2020-08-18 珠海格力电器股份有限公司 Air conditioner, outdoor unit, defrosting device, defrosting control method and defrosting control system
CN110617563A (en) * 2019-09-12 2019-12-27 成都仙德科技有限公司 Portable acoustic energy air conditioner defrosting method
CN110671780A (en) * 2019-10-24 2020-01-10 宁波奥克斯电气股份有限公司 Air conditioner control method and device and air conditioner

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CN206430253U (en) * 2016-12-09 2017-08-22 永清中希光电科技发展有限公司 Unit Split type air source heat pump heating machine

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