CN110686315A - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN110686315A CN110686315A CN201911061927.5A CN201911061927A CN110686315A CN 110686315 A CN110686315 A CN 110686315A CN 201911061927 A CN201911061927 A CN 201911061927A CN 110686315 A CN110686315 A CN 110686315A
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- CN
- China
- Prior art keywords
- heat exchanger
- indoor heat
- outdoor
- expansion valve
- refrigerant
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Abstract
An embodiment of the present application provides an air conditioner, wherein an indoor heat exchanger of the air conditioner is configured by an outdoor control part to work as an evaporator to enable an ice layer to be formed on the surface of the indoor heat exchanger, and after the ice layer is formed on the surface of the indoor heat exchanger, the indoor heat exchanger is configured to work as a condenser to enable the ice layer formed on the surface of the indoor heat exchanger to be melted; the expansion valve is controlled by the outdoor control part to be smaller than the opening degree of the expansion valve when the indoor heat exchanger is configured to be the condenser to work and is configured to be the evaporator to work when the indoor heat exchanger is configured to be the evaporator to work, the high-pressure refrigerant of the outdoor heat exchanger can slowly enter the indoor heat exchanger by reducing the opening degree of the expansion valve under the heating working condition, and further the ice layer melting rate of the surface of the indoor heat exchanger is reduced, so that the condensed water formed by melting the ice layer is slowly formed on the surface of the indoor heat exchanger, the condensed water can be ensured to be fully contacted with the surface of the indoor heat exchanger to absorb the dust attached to the surface of the indoor heat exchanger, and the.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an air conditioner.
Background
After the air conditioner is placed or used for a long time, certain dust and dirt exist on the surface of the heat exchanger, and the dust and dirt can reduce the heat exchange efficiency of the heat exchanger, so that the performance of the air conditioner is reduced, and the energy consumption is improved. The main cleaning modes of the existing air conditioner are as follows: the surface of a coil pipe of the indoor unit is frozen to form an ice layer under the refrigerating working condition, the refrigerating working condition is switched to the heating working condition, the ice layer is melted and condensed water is formed, the condensed water is pushed by air flow provided by the fan to take away dust on the surface of the heat exchanger, and the cleaning effect on the air conditioner is realized.
Disclosure of Invention
The embodiment of the application provides an air conditioner and an air conditioner cleaning method, which are used for solving the problem of poor air conditioner cleaning effect in the prior art and effectively cleaning the air conditioner.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:
an embodiment of the present application provides an air conditioner, which includes: the compressor is used for compressing the low-pressure refrigerant to form a high-pressure refrigerant; the indoor heat exchanger is used for exchanging heat between indoor airflow and a refrigerant transmitted in the indoor heat exchanger; the outdoor heat exchanger is used for exchanging heat between outdoor airflow and a refrigerant transmitted in the outdoor heat exchanger; the expansion valve is connected between the indoor heat exchanger and the outdoor heat exchanger, and the pressure of a refrigerant flowing through the indoor heat exchanger and the outdoor heat exchanger is adjusted according to the opening degree of the expansion valve; an outdoor control part configured to control an opening degree of the expansion valve and an operating frequency of the compressor; a refrigerant loop, which is composed of the compressor, the outdoor heat exchanger, the expansion valve and the indoor heat exchanger which are connected in sequence, wherein the refrigerant circularly flows in the refrigerant loop; the indoor heat exchanger is configured by the outdoor control part to operate an evaporator to form an ice layer on the surface of the indoor heat exchanger, and after the ice layer is formed on the surface of the indoor heat exchanger, the indoor heat exchanger is configured to operate a condenser to melt the ice layer formed on the surface of the indoor heat exchanger; the expansion valve is controlled by the outdoor control portion such that an opening degree of the expansion valve when the indoor heat exchanger is configured to operate the condenser is smaller than an opening degree of the expansion valve when the indoor heat exchanger is configured to operate the evaporator.
Further, the air conditioner further includes: and the four-way valve is connected in the refrigerant loop and switches the flow direction of the refrigerant in the refrigerant loop under the control of the outdoor control part so that the indoor heat exchanger works as an evaporator or a condenser.
Further, the indoor heat exchanger is configured to operate as a condenser by the outdoor control part after a preset shutdown time, and the compressor is configured to operate as a shutdown by the outdoor control part during the preset shutdown time.
Further, the expansion valve is controlled by the outdoor control portion so that an opening degree when the indoor heat exchanger is configured to operate the condenser is kept constant.
Further, the expansion valve is controlled by the outdoor control part so that the opening degree is kept constant during the preset shutdown time in which the compressor is configured to be shutdown
An embodiment of the present application provides an air conditioner, wherein an indoor heat exchanger of the air conditioner is configured by an outdoor control part to work as an evaporator to enable an ice layer to be formed on the surface of the indoor heat exchanger, and after the ice layer is formed on the surface of the indoor heat exchanger, the indoor heat exchanger is configured to work as a condenser to enable the ice layer formed on the surface of the indoor heat exchanger to be melted; the expansion valve is controlled by the outdoor control portion such that an opening degree of the expansion valve when the indoor heat exchanger is configured to operate the condenser is smaller than an opening degree of the expansion valve when the indoor heat exchanger is configured to operate the evaporator, the high-pressure refrigerant of the outdoor heat exchanger can slowly enter the indoor heat exchanger by reducing the opening degree of the expansion valve under the heating condition, further reducing the melting rate of the ice layer on the surface of the indoor heat exchanger, so that the condensed water formed by melting the ice layer is slowly formed on the surface of the indoor heat exchanger, not only can ensure that the condensed water is fully contacted with the surface of the indoor heat exchanger to absorb the dust attached to the surface of the indoor heat exchanger, but also can improve the amount of the condensed water to increase the washing of the dust, therefore, the cleaning effect of the condensed water on the surface dust of the indoor heat exchanger is improved, the problem of poor cleaning effect of the air conditioner in the prior art is solved, and the heat exchanger inside the air conditioner is effectively cleaned.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present application;
fig. 2 is a system schematic diagram of an air conditioner according to an embodiment of the present application.
Detailed Description
The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings.
As shown in fig. 1 and 2, an embodiment of the present invention provides an air conditioner, which is a split type air conditioner including an outdoor unit 10 and an indoor unit 20, wherein the outdoor unit 10 and the indoor unit 20 are connected by a pipe to transmit a refrigerant, and are connected by a data connection line to transmit communication information.
The air conditioner may include an air cleaning unit, a ventilation unit, a humidification unit, a dehumidification unit, a heater, and the like, in addition to the outdoor unit 10 and the indoor unit 20. The above units can be integrally controlled in a state of being coupled to the outdoor unit 10 and the indoor unit 20.
The outdoor unit 10 includes a compressor 11, an outdoor heat exchanger 12, an expansion valve 13, an outdoor control unit 14, an outdoor fan 15, and a four-way valve 16.
The compressor 11 is configured to compress a refrigerant such that a low-pressure refrigerant is compressed to form a high-pressure refrigerant.
The outdoor heat exchanger 12 is configured to exchange heat between outdoor air and a refrigerant transmitted in the outdoor heat exchanger 12, and specifically, the outdoor heat exchanger 12 operates as a condenser under a refrigeration condition of the air conditioner, so that the refrigerant compressed by the compressor 11 is condensed in the outdoor heat exchanger 12; the outdoor heat exchanger 12 operates as an evaporator under the heating condition of the air conditioner, so that the decompressed refrigerant is evaporated in the outdoor heat exchanger 12.
Further, the cooling fins (not shown) of the outdoor heat exchanger 12 serve to improve heat exchange efficiency between the outdoor air and the refrigerant by enlarging a surface area between the outdoor air and refrigerant tubes (not shown) of the outdoor heat exchanger 12 through which the refrigerant passes.
The expansion valve 13 is connected between the indoor heat exchanger 21 and the outdoor heat exchanger 12, and the refrigerant pressure flowing through the indoor heat exchanger 21 and the outdoor heat exchanger 12 is adjusted by the opening degree of the expansion valve 13 to adjust the refrigerant flow rate flowing between the indoor heat exchanger 21 and the outdoor heat exchanger 12, wherein the flow rate value and the pressure value of the refrigerant flowing through the indoor heat exchanger 21 and the outdoor heat exchanger 12 affect the heat exchange performance of the indoor heat exchanger 21 and the outdoor heat exchanger 12. The expansion valve 13 may be an electronic valve, and the opening degree of the expansion valve 13 may be adjustable to control the flow rate and pressure of the refrigerant flowing through the expansion valve 13.
The outdoor control part 14 is configured to control the opening degree of the expansion valve 13 and the operating frequency of the compressor 11.
The outdoor fan 15 is used for sucking outdoor air into the outdoor unit 10 through an outdoor air inlet, exchanging heat through the outdoor heat exchanger 12, and sending the outdoor air out through an outdoor air outlet, and the outdoor fan 15 provides power for the air flow.
The four-way valve 16 is connected in the refrigerant circuit, and the four-way valve 16 is controlled by the outdoor control part 14 to switch the flow direction of the refrigerant in the refrigerant circuit so as to enable the indoor unit 20 to execute the cooling or heating working condition.
And a refrigerant loop, which is composed of a compressor 11, an outdoor heat exchanger 12, an expansion valve 13 and an indoor heat exchanger 21, which are sequentially connected, wherein the refrigerant circularly flows in the refrigerant loop, so that the indoor heat exchanger 21 and the outdoor heat exchanger 12 respectively exchange heat with air, and refrigeration or heating of the indoor unit 20 is realized.
The indoor unit 20 includes an indoor heat exchanger 21, an indoor fan 22, and an indoor control unit 23.
The indoor heat exchanger 21 exchanges heat between the indoor air flow and the refrigerant passing through the indoor heat exchanger 21.
The indoor fan 22 is used for sucking indoor air into the indoor unit 20 through an indoor air inlet, sending the indoor air out through an indoor air outlet after heat exchange is performed by the indoor heat exchanger 21, and providing power for air flowing by the indoor fan 22.
The indoor control part 23 is configured to control the rotation speed of the indoor fan 22, and the indoor control part 23 is connected to the outdoor control part 14 through a data line to transmit communication information.
The indoor unit 20 is controlled to perform a cooling operation and the compressor 11 is operated in order to clean dust attached to the surface of the indoor heat exchanger 21. Specifically, the four-way valve 16 is controlled by the outdoor control unit 14 such that the refrigerant flows in the refrigerant circuit in the preset flow direction to operate the indoor unit 20 in the cooling mode, the indoor heat exchanger 21 is configured to operate as an evaporator when the indoor unit 20 operates in the cooling mode, and water molecules in the air are cooled on the surface of the indoor heat exchanger 21, and then are condensed on the surface of the indoor heat exchanger 21 to further form an ice layer.
After the ice layer is formed on the surface of the indoor heat exchanger 21, the outdoor control unit 14 controls the compressor 11 to stop according to the preset stop time, so that the compressor 11 maintains a stop state for the preset stop time, and the overpressure protection is implemented when the working condition of the indoor unit 20 of the compressor 11 is switched, for example, the preset stop time of the compressor 11 is 3 minutes.
After the compressor 11 is kept in a stop state for a preset shutdown time, the outdoor control part 14 controls the compressor 11 to start to work, the outdoor control part 14 controls the four-way valve 16 to enable a refrigerant to flow in a refrigerant loop according to a preset flow direction so as to enable the indoor unit 20 to work in a heating working condition, and when the indoor unit 20 works in the heating working condition, the indoor heat exchanger 21 is configured to work as a condenser, so that an ice layer formed on the surface of the indoor heat exchanger 21 is melted by the condenser, dust contained in the ice layer can be cleaned by condensed water formed by melting of the ice layer, meanwhile, the flow of the condensed water on the surface of the indoor heat exchanger 21 can flush the surface of the indoor heat exchanger 21, and the surface of the indoor heat exchanger 21 is ensured to be clean.
In order to improve the cleaning effect on the surface of the indoor heat exchanger 21, in the embodiment of the present application, the expansion valve 13 is controlled by the outdoor control unit 14 such that the opening degree of the expansion valve 13 when the indoor heat exchanger 21 is configured to operate as a condenser is smaller than the opening degree of the expansion valve 13 when the indoor heat exchanger 21 is configured to operate as an evaporator, that is, the opening degree of the expansion valve 13 when the indoor unit 20 operates to melt an ice layer in a heating condition is smaller than the opening degree thereof when the indoor unit 20 operates to form an ice layer in a cooling condition, for example, the opening degree of the expansion valve 13 when the indoor unit 20 operates to melt an ice layer in a heating condition is 300 °, and the opening degree of the expansion valve 13 when the indoor unit 20 operates to form an ice layer in a.
It should be noted that, by reducing the opening degree of the expansion valve 13 when the indoor unit 20 is in the heating condition, the high-pressure refrigerant of the outdoor heat exchanger slowly enters the indoor heat exchanger 21, when the refrigerant with a low flow rate flows through the indoor heat exchanger 21, the heat exchange performance of the indoor heat exchanger 21 can be reduced, and the ice layer melting rate on the surface of the indoor heat exchanger can be reduced, so that the condensed water formed by melting the ice layer is slowly formed on the surface of the indoor heat exchanger 21, the condensed water formed by slowly melting can fully contact with the surface of the indoor heat exchanger 21 to absorb and wash away the dust attached to the indoor heat exchanger 21, and meanwhile, the water amount of the condensed water can be increased to increase the washing away of the dust on the surface of the heat exchanger, and further improve the cleaning performance of the.
In order to ensure the flow stability of the refrigerant in the refrigerant circuit and to ensure the stable operation of the heat exchange system, the expansion valve 13 is controlled by the outdoor control unit 14 to maintain the opening degree of the expansion valve within the preset shutdown time of the shutdown operation of the compressor 11, so as to prevent the refrigerant flow of the refrigerant circuit from fluctuating when the compressor 11 is in the shutdown operation. Further, the expansion valve 13 is controlled by the outdoor control unit 14 such that the opening degree of the indoor heat exchanger 21 is maintained when the indoor heat exchanger 21 is configured to operate as a condenser, thereby preventing the refrigerant flow of the refrigerant circuit from fluctuating when the indoor unit 20 operates in a heating operation, and ensuring the melting stability of the ice layer on the surface of the indoor heat exchanger 21 and the stability of the amount of condensed water.
The above units may be individually configured processors, or may be implemented by being integrated into one of the processors of the controller, or may be stored in a memory of the controller in the form of program codes, and the functions of the above units may be called and executed by one of the processors of the controller. The processor described herein may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present Application.
It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
Claims (5)
1. An air conditioner, characterized by comprising:
the compressor is used for compressing the low-pressure refrigerant to form a high-pressure refrigerant;
the indoor heat exchanger is used for exchanging heat between indoor airflow and a refrigerant transmitted in the indoor heat exchanger;
the outdoor heat exchanger is used for exchanging heat between outdoor airflow and a refrigerant transmitted in the outdoor heat exchanger;
the expansion valve is connected between the indoor heat exchanger and the outdoor heat exchanger, and the pressure of a refrigerant flowing through the indoor heat exchanger and the outdoor heat exchanger is adjusted according to the opening degree of the expansion valve;
an outdoor control part configured to control an opening degree of the expansion valve and an operating frequency of the compressor;
a refrigerant loop, which is composed of the compressor, the outdoor heat exchanger, the expansion valve and the indoor heat exchanger which are connected in sequence, wherein the refrigerant circularly flows in the refrigerant loop;
the indoor heat exchanger is configured by the outdoor control part to operate an evaporator to form an ice layer on the surface of the indoor heat exchanger, and after the ice layer is formed on the surface of the indoor heat exchanger, the indoor heat exchanger is configured to operate a condenser to melt the ice layer formed on the surface of the indoor heat exchanger;
the expansion valve is controlled by the outdoor control portion such that an opening degree of the expansion valve when the indoor heat exchanger is configured to operate the condenser is smaller than an opening degree of the expansion valve when the indoor heat exchanger is configured to operate the evaporator.
2. The air conditioner according to claim 1, further comprising:
and the four-way valve is connected in the refrigerant loop and switches the flow direction of the refrigerant in the refrigerant loop under the control of the outdoor control part so that the indoor heat exchanger works as an evaporator or a condenser.
3. The air conditioner according to claim 1, wherein the indoor heat exchanger is configured to operate as a condenser by the outdoor control part after a preset shutdown time, and the compressor is configured to operate as a shutdown by the outdoor control part during the preset shutdown time.
4. The air conditioner according to claim 1, wherein the expansion valve is controlled by the outdoor control portion so that an opening degree when the indoor heat exchanger is configured such that the condenser operates is maintained constant.
5. An air conditioner according to claim 3, wherein the expansion valve is controlled by the outdoor control portion so that an opening degree thereof is maintained constant during the preset shutdown time in which the compressor is configured to be shutdown.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061927.5A CN110686315A (en) | 2019-11-01 | 2019-11-01 | Air conditioner |
| PCT/CN2019/117906 WO2021082076A1 (en) | 2019-11-01 | 2019-11-13 | Air conditioner |
| JP2020511161A JP7138162B2 (en) | 2019-11-01 | 2019-11-13 | air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061927.5A CN110686315A (en) | 2019-11-01 | 2019-11-01 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110686315A true CN110686315A (en) | 2020-01-14 |
Family
ID=69115360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911061927.5A Pending CN110686315A (en) | 2019-11-01 | 2019-11-01 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110686315A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082076A1 (en) * | 2019-11-01 | 2021-05-06 | 海信家电集团股份有限公司 | Air conditioner |
-
2019
- 2019-11-01 CN CN201911061927.5A patent/CN110686315A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082076A1 (en) * | 2019-11-01 | 2021-05-06 | 海信家电集团股份有限公司 | Air conditioner |
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