CN111692653B - Control method of compressor - Google Patents
Control method of compressor Download PDFInfo
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- CN111692653B CN111692653B CN202010682401.5A CN202010682401A CN111692653B CN 111692653 B CN111692653 B CN 111692653B CN 202010682401 A CN202010682401 A CN 202010682401A CN 111692653 B CN111692653 B CN 111692653B
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- compressor
- pipeline
- temperature
- pipe
- suction pipe
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000003507 refrigerant Substances 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims description 21
- 238000005057 refrigeration Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
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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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F25B31/00—Compressor arrangements
-
- 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
- F25B49/022—Compressor control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/28—Means for preventing liquid refrigerant entering into the compressor
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Compressor (AREA)
Abstract
The invention provides a control method of a compressor. The compressor includes the compressor body, and the compressor body includes compressor casing, breathing pipe and blast pipe, and the compressor still includes refrigerant circulating device, and refrigerant circulating device includes: the gas storage box is arranged on the compressor shell; one end of the first pipeline is connected with the gas storage box, the other end of the first pipeline is connected with the gas suction pipe, and the first pipeline is connected with the gas suction pipe in an on-off mode; one end of the second pipeline is connected with the gas storage box, the other end of the second pipeline is connected with the exhaust pipe, and the second pipeline is connected with the exhaust pipe in an on-off mode; and one end of the exhaust pipeline is connected with the gas storage box, the other end of the exhaust pipeline is connected with the air suction pipe, and the exhaust pipeline is connected with the air suction pipe in an on-off manner. The compressor solves the problem that the temperature of the compressor cannot be adjusted in the prior art.
Description
Technical Field
The invention relates to the field of compressors, in particular to a control method of a compressor.
Background
An air conditioner compressor is generally installed in an outdoor unit, and serves to compress and drive a refrigerant in an air conditioner refrigerant circuit.
However, the temperature of the compressor in the prior art cannot be regulated, and the outside environment temperature is low in winter, particularly in winter and summer hot areas, and is generally below-15 ℃. When a user starts the air conditioner to heat, because the compressor is an ascending control process from low frequency to high frequency, the liquid refrigerant of the compressor is more when the air conditioner is just started, and the heat exchange is poor when the outside temperature is lower, the problems of unreliable suction liquid and oil return of the compressor can be caused.
In addition, when the air conditioner is used for refrigerating, and when the inner side environment temperature and the outer side environment temperature are lower (low-temperature refrigerating), the heat exchange of the evaporator is poor, and the problems of unreliable liquid suction and oil return of the compressor are also caused.
Disclosure of Invention
The invention mainly aims to provide a control method of a compressor, which aims to solve the problem that the temperature of the compressor cannot be regulated in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a compressor including a compressor body including a compressor housing, an intake pipe, and an exhaust pipe, the compressor further including a refrigerant circulation device including: the gas storage box is arranged on the compressor shell; one end of the first pipeline is connected with the gas storage box, the other end of the first pipeline is connected with the gas suction pipe, and the first pipeline is connected with the gas suction pipe in an on-off mode; one end of the second pipeline is connected with the gas storage box, the other end of the second pipeline is connected with the exhaust pipe, and the second pipeline is connected with the exhaust pipe in an on-off mode; and one end of the exhaust pipeline is connected with the gas storage box, the other end of the exhaust pipeline is connected with the air suction pipe, and the exhaust pipeline is connected with the air suction pipe in an on-off manner.
Further, the gas storage box is an annular box body, the annular box body is sleeved on the compressor shell, and the annular wall on the inner side of the annular box body is in contact with the compressor shell.
Further, the connection between the exhaust pipe and the suction pipe is located at one side of the connection between the first pipe and the suction pipe near the compressor housing.
Further, the first pipeline comprises a first connecting pipe and a first control valve arranged on the first connecting pipe, one end of the first connecting pipe is connected with the gas storage box, and the other end of the first connecting pipe is connected with the gas suction pipe.
Further, the second pipeline comprises a second connecting pipe and a second control valve arranged on the second connecting pipe, one end of the second connecting pipe is connected with the gas storage box, and the other end of the second connecting pipe is connected with the exhaust pipe.
Further, the exhaust pipeline comprises a third connecting pipe and a third control valve arranged on the third connecting pipe, one end of the third connecting pipe is connected with the gas storage box, and the other end of the third connecting pipe is connected with the gas suction pipe.
Further, the compressor further includes: the first temperature detecting piece is arranged on the compressor shell to detect the temperature of the compressor shell.
Further, the compressor further includes: the second temperature detection piece is arranged on the air suction pipe to detect the temperature of the air suction pipe.
Further, the second temperature detecting member is disposed at a side of the first pipe away from the exhaust pipe.
According to another aspect of the present invention, there is provided an air conditioner including a compressor, which is the above-mentioned compressor.
According to still another aspect of the present invention, there is provided a control method of a compressor, applied to the above-mentioned compressor, comprising: starting heating operation, and detecting the temperature T1 of a compressor shell of the compressor; when the temperature T1 of the compressor shell is less than or equal to a first preset temperature, a second pipeline of the compressor is controlled to be communicated with an exhaust pipe of the compressor; the first pipeline of the control compressor is disconnected with the air suction pipe of the compressor; the exhaust pipeline of the control compressor is disconnected with the air suction pipe; when the temperature T1 of the compressor shell is greater than or equal to a second preset temperature, the second pipeline is controlled to be disconnected with the exhaust pipe; the first pipeline is controlled to be communicated with the air suction pipe; the control exhaust pipeline is communicated with the air suction pipe; when the temperature T1 of the compressor shell is higher than the first preset temperature and lower than the second preset temperature, the second pipeline is controlled to be disconnected with the exhaust pipe; controlling the first pipeline to be disconnected with the air suction pipe; the exhaust pipeline is controlled to be disconnected from the air suction pipe.
Further, the first predetermined temperature is 50 ℃, and the second predetermined temperature is 70 ℃.
Further, the control method of the compressor further includes: starting refrigeration operation, detecting the temperature T2 of the shell of the compressor, and detecting the temperature T3 of the air suction pipe; when the temperature T2 of the compressor shell is smaller than a third preset temperature and T2-T3 is smaller than 3 ℃, the second pipeline is controlled to be communicated with the exhaust pipe; controlling the first pipeline to be disconnected with the air suction pipe; the exhaust pipeline is controlled to be disconnected with the air suction pipe; when the temperature T2 of the compressor shell is less than a third preset temperature and is less than or equal to 3 ℃ and less than or equal to T2-T3; or when the temperature T2 of the compressor shell is greater than or equal to a third preset temperature, the second pipeline is controlled to be disconnected from the exhaust pipe; the first pipeline is controlled to be communicated with the air suction pipe; the control exhaust pipeline is communicated with the air suction pipe.
Further, the third predetermined temperature is 50 ℃.
The compressor comprises a compressor body and a refrigerant circulating device, wherein the refrigerant circulating device comprises a gas storage box, a first pipeline, a second pipeline and an exhaust pipeline, and the first pipeline, the second pipeline and the exhaust pipeline are all arranged on-off so as to realize the connection or disconnection of the gas storage box and an exhaust pipe or the connection or disconnection of the gas storage box and an air suction pipe; the air storage box is arranged on the shell of the compressor, and heat transfer can be realized between the air storage box and the shell of the compressor; when the gas storage box is communicated with the exhaust pipe and the first pipeline is disconnected from the exhaust pipe, the compressor body can be preheated by a high-temperature refrigerant in the exhaust pipe; when the gas storage box is disconnected from the exhaust pipe, and the first pipeline and the exhaust pipeline are communicated with the gas storage box, the low-temperature refrigerant in the air suction pipe cools the compressor body and can heat the low-temperature refrigerant; furthermore, the problems that the liquid refrigerant in the compressor just started is more and the air suction liquid and the oil return of the compressor are unreliable due to poor heat exchange when the air conditioner is heated and the outside temperature is lower can be avoided; the problem of unreliable liquid carrying and oil return of the air suction of the compressor caused by poor heat exchange of the evaporator when the indoor environment temperature and the outdoor environment temperature are lower (low-temperature refrigeration) can be avoided; and the overheat of the temperature of the compressor is avoided, and the running reliability of the compressor is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 shows a schematic structural view of an embodiment of a compressor according to the present invention;
fig. 2 is a schematic view showing a structure of a refrigerant circulation device of a compressor according to the present invention.
Wherein the above figures include the following reference numerals:
10. a compressor body; 11. a compressor housing; 12. an air suction pipe; 13. an exhaust pipe; 20. a refrigerant circulation device; 21. a gas storage box; 211. an inner annular wall; 22. a first pipeline; 221. a first connection pipe; 222. a first control valve; 23. a second pipeline; 231. a second connection pipe; 232. a second control valve; 24. an exhaust line; 241. a third connection pipe; 242. a third control valve; 30. a first temperature detecting member; 40. a second temperature detecting member; 50. and a liquid storage tank.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The present invention provides a compressor, please refer to fig. 1 and 2, comprising a compressor body 10, the compressor body 10 comprising a compressor housing 11, an air suction pipe 12 and an air discharge pipe 13. The compressor further includes a refrigerant circulation device 20, and the refrigerant circulation device 20 includes: a gas storage box 21 provided on the compressor housing 11; the first pipeline 22, one end of the first pipeline 22 is connected with the gas storage box 21, the other end of the first pipeline 22 is connected with the air suction pipe 12, and the first pipeline 22 is connected with the air suction pipe 12 in an on-off manner; the second pipeline 23, one end of the second pipeline 23 is connected with the gas storage box 21, the other end of the second pipeline 23 is connected with the exhaust pipe 13, and the second pipeline 23 is connected with the exhaust pipe 13 in an on-off manner; and an exhaust pipeline 24, wherein one end of the exhaust pipeline 24 is connected with the gas storage box 21, the other end of the exhaust pipeline 24 is connected with the air suction pipe 12, and the exhaust pipeline 24 is connected with the air suction pipe 12 in an on-off mode.
The compressor comprises a compressor body 10 and a refrigerant circulating device 20, wherein the refrigerant circulating device 20 comprises a gas storage box 21, a first pipeline 22, a second pipeline 23 and an exhaust pipeline 24, the second pipeline 23 is connected with the exhaust pipe 13 in an on-off way so as to realize the connection or disconnection of the gas storage box 21 and the exhaust pipe 13, and the first pipeline 22 and the exhaust pipeline 24 are connected with the air suction pipe 12 in an on-off way so as to realize the connection or disconnection of the gas storage box 21 and the air suction pipe 12; wherein the air storage box 21 is arranged on the compressor shell 11, and heat transfer can be realized between the air storage box and the compressor shell; when the gas storage box 21 is communicated with the exhaust pipe 13 and the gas storage box 21 is disconnected with the air suction pipe 12, the compressor body 10 can be preheated by a high-temperature refrigerant in the exhaust pipe 13; when the gas storage box 21 is disconnected from the exhaust pipe 13 and the gas storage box 21 is communicated with the air suction pipe 12 through the first pipeline 22 and the exhaust pipeline 24, the low-temperature refrigerant in the air suction pipe 12 cools the compressor body 10 and can heat the low-temperature refrigerant; furthermore, the problems that the liquid refrigerant in the compressor just started is more and the air suction liquid and the oil return of the compressor are unreliable due to poor heat exchange when the air conditioner is heated and the outside temperature is lower can be avoided; the problem of unreliable liquid carrying and oil return of the air suction of the compressor caused by poor heat exchange of the evaporator when the indoor environment temperature and the outdoor environment temperature are lower (low-temperature refrigeration) can be avoided; and the overheat of the temperature of the compressor is avoided, and the running reliability of the compressor is ensured.
Specifically, the air storage box 21 is provided around the compressor housing 11.
As shown in fig. 1, the gas storage box 21 is an annular box body, the annular box body is sleeved on the compressor housing 11, and an inner annular wall 211 of the annular box body is in contact with the compressor housing 11. This arrangement ensures the heat exchange effect of the air storage box 21 with the compressor housing 11.
Specifically, as shown in fig. 2, the gas storage box 21 is annular, and the gas storage box 21 includes an inner annular wall 211 and an outer annular wall which are oppositely arranged, wherein the side wall of the compressor housing 11 is cylindrical, the inner annular wall 211 is matched with the side wall of the compressor housing 11, and the inner annular wall 211 is matched with the side wall of the compressor housing 11.
Alternatively, the air storage box 21 is mounted to the compressor housing 11 at a different position.
Further alternatively, the air storage box 21 is installed at the lower portion of the compressor housing 11, and is disposed near the bottom of the compressor housing 11. Wherein the suction pipe 12 passes through the connection of the air storage box 21 and the compressor housing 11.
In particular, the compressor body 10 further includes a liquid storage tank 50, the liquid storage tank 50 being disposed on the suction pipe 12 and between the compressor housing 11 and the discharge line 24.
In the present embodiment, as shown in fig. 1, the connection between the exhaust pipe 24 and the suction pipe 12 is located on the side of the connection between the first pipe 22 and the suction pipe 12 near the compressor housing 11.
In this embodiment, as shown in fig. 1, the first pipe 22 includes a first connection pipe 221 and a first control valve 222 provided on the first connection pipe 221, one end of the first connection pipe 221 is connected to the air storage box 21, and the other end of the first connection pipe 221 is connected to the air suction pipe 12. The first control valve 222 realizes on-off of the first connection pipe 221.
In this embodiment, as shown in fig. 1, the second pipe 23 includes a second connection pipe 231 and a second control valve 232 provided on the second connection pipe 231, one end of the second connection pipe 231 is connected to the gas storage box 21, and the other end of the second connection pipe 231 is connected to the exhaust pipe 13. The second control valve 232 realizes the on-off of the second connection pipe 231.
In the present embodiment, as shown in fig. 1, the exhaust pipe 24 includes a third connection pipe 241 and a third control valve 242 provided on the third connection pipe 241, one end of the third connection pipe 241 is connected to the gas storage box 21, and the other end of the third connection pipe 241 is connected to the gas suction pipe 12. The third control valve 242 realizes the on-off of the third connection pipe 241.
In specific implementation, when the first pipeline 22 is communicated, the exhaust pipeline 24 is simultaneously communicated, and the second pipeline 23 is in a disconnected state; when the first pipe line 22 is disconnected, the exhaust pipe line 24 is simultaneously disconnected, and the second pipe line 23 is in a connected state.
In this embodiment, as shown in fig. 1, the compressor further includes: the first temperature detecting member 30 is provided on the compressor housing 11 to detect the temperature of the compressor housing 11. Wherein the first temperature detecting member 30 is disposed at a lower portion of the compressor housing 11 and is disposed near a bottom of the first temperature detecting member 30; further, the first temperature detecting member 30 is provided at a side of the air storage box 21 near the compressor housing 11.
Alternatively, the first temperature detecting member 30 is a temperature tester.
In this embodiment, as shown in fig. 1, the compressor further includes: a second temperature sensing member 40 provided on the suction pipe 12 to sense the temperature of the suction pipe 12.
Optionally, the second temperature detecting element 40 is a temperature tester.
In the present embodiment, as shown in fig. 1, the second temperature detecting member 40 is provided at a side of the first pipe 22 remote from the exhaust pipe 24.
The compressor of this application is through in introducing the gas storage box 21 with the higher compressor exhaust of temperature in the blast pipe, and the gas storage box 21 assembly is around the compressor and preheat the compressor, guarantees the reliability of compressor low temperature operation, simultaneously when the compressor temperature is higher, in introducing the gas storage box 21 with the lower refrigerant of breathing in of temperature in the breathing pipe, guaranteed to breathe in can not take the liquid and dispel the heat to the compressor. In addition, the first connection pipe 221 is provided with a first control valve 222, the second connection pipe 231 is provided with a second control valve 232, the third connection pipe 241 is provided with a second control valve 232, the compressor housing is provided with a first temperature detecting member 30, and whether the control valve is opened to introduce high-temperature exhaust gas into the gas storage box for preheating the compressor or introduce low-temperature suction refrigerant for radiating and heating the compressor is controlled by judging the temperature of the compressor housing. Therefore, the temperature of the compressor is well ensured to improve the temperature of the refrigerant, the heat exchange efficiency of the compressor and the reliability of operation.
The compressor of this application has adopted the fine solution compressor operational reliability liquid return problem and the overheated problem in compressor bottom when the low frequency operation of compressor when outdoor ambient temperature is lower, simultaneously through control refrigerant circulation, heats or dispels the heat for the compressor of high temperature for the refrigerant of breathing in of low temperature, guarantees the reliability of compressor operation, avoids breathing in to take liquid or compressor high temperature to lead to oil return and spare part reliability problem.
The compressor of this application has solved following problem: the problems of liquid return and oil return when the compressor is just started when the external environment temperature is low are effectively solved; when the ambient temperature is lower or higher, the reliability of the operation of the compressor is ensured through effective refrigerant control.
The invention also provides an air conditioner which comprises a compressor, wherein the compressor is the compressor in the embodiment.
The invention also provides a control method of the compressor, which is applied to the compressor in the embodiment, and the control method of the compressor comprises the following steps: starting heating operation, and detecting the temperature T1 of the compressor shell 11 of the compressor; when the temperature T1 of the compressor shell 11 is less than or equal to a first preset temperature, the second pipeline 23 of the compressor is controlled to be communicated with the exhaust pipe 13 of the compressor; the first line 22 controlling the compressor is disconnected from the suction pipe 12 of the compressor; the exhaust line 24 controlling the compressor is disconnected from the suction pipe 12; when the temperature T1 of the compressor housing 11 is greater than or equal to the second predetermined temperature, the second pipe 23 is controlled to be disconnected from the discharge pipe 13; the first pipeline 22 is controlled to be communicated with the air suction pipe 12; a control exhaust line 24 communicates with the suction pipe 12; when the temperature T1 of the compressor housing 11 is greater than the first predetermined temperature and less than the second predetermined temperature, the second pipe 23 is controlled to be disconnected from the discharge pipe 13; controlling the first conduit 22 to disconnect from the suction pipe 12; the exhaust line 24 is controlled to be disconnected from the suction pipe 12.
Alternatively, the first predetermined temperature is 50 ℃ and the second predetermined temperature is 70 ℃.
Specifically, when the compressor is in heating operation, the first temperature detecting element 30 at the bottom of the compressor starts to detect the bottom temperature of the compressor shell 11, denoted as T1, and when the detected temperature T1 is less than or equal to 50 ℃, the compressor starts to operate for 2 minutes, then the second control valve 232 is opened, the first control valve 222 and the third control valve 242 are closed, and a high-temperature gas refrigerant is discharged into the first connecting pipe 221 to preheat the bottom of the compressor; when T1>50 ℃, the second control valve 232 is closed and the compressor is stopped from preheating. When the temperature T1 detected by the first temperature detecting element 30 at the bottom of the compressor is greater than or equal to 70 ℃, the first control valve 222 and the third control valve 242 are opened, and a low-temperature gas refrigerant is introduced to dissipate heat of the compressor.
In this embodiment, the control method of the compressor further includes: starting a refrigeration operation, detecting the temperature T2 of the compressor shell 11, and detecting the temperature T3 of the air suction pipe 12; controlling the second pipe 23 to communicate with the discharge pipe 13 when the temperature T2 of the compressor housing 11 is less than a third predetermined temperature and T2-T3<3 ℃; controlling the first conduit 22 to disconnect from the suction pipe 12; control exhaust line 24 is disconnected from suction pipe 12; when the temperature T2 of the compressor housing 11 is less than the third predetermined temperature and 3 ℃ is less than or equal to T2-T3; alternatively, when the temperature T2 of the compressor housing 11 is greater than or equal to the third predetermined temperature, the second pipe 23 is controlled to be disconnected from the discharge pipe 13; the first pipeline 22 is controlled to be communicated with the air suction pipe 12; a control exhaust line 24 communicates with the suction pipe 12.
Optionally, the third predetermined temperature is 50 ℃.
Specifically, when the compressor is in cooling operation, the first temperature detecting member 30 at the bottom of the compressor starts to detect the bottom temperature of the compressor and marks T2, and the second temperature detecting member 40 starts to detect the suction pipe 12 and marks T3; when the detected temperature T2 is less than 50 ℃ and the detected temperature T2-T3 is less than 3 ℃, the second control valve 232 is opened, the first control valve 222 and the third control valve 242 are closed, the high-temperature gas refrigerant progress gas storage box 21 preheats the compressor, and the bottom temperature of the compressor is ensured; when the detected temperature T2 is less than 50 ℃ and the temperature T2-T3 is more than or equal to 3 ℃ or the temperature T2 is more than or equal to 50 ℃, the first control valve 222 and the third control valve 242 are opened, the second control valve 232 is closed, the low-temperature refrigerant is introduced into the compressor, the low-temperature refrigerant is preheated, the refrigerant is completely heated and evaporated into gas by the compressor, and meanwhile heat dissipation of the compressor is guaranteed.
In particular, when the first control valve 222 is opened, the third control valve 242 is simultaneously opened, and the second control valve 232 is closed.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
the compressor comprises a compressor body 10 and a refrigerant circulating device 20, wherein the refrigerant circulating device 20 comprises a gas storage box 21, a first pipeline 22, a second pipeline 23 and an exhaust pipeline 24, the second pipeline 23 is connected with the exhaust pipe 13 in an on-off way so as to realize the connection or disconnection of the gas storage box 21 and the exhaust pipe 13, and the first pipeline 22 and the exhaust pipeline 24 are connected with the air suction pipe 12 in an on-off way so as to realize the connection or disconnection of the gas storage box 21 and the air suction pipe 12; wherein the air storage box 21 is arranged on the compressor shell 11, and heat transfer can be realized between the air storage box and the compressor shell; when the gas storage box 21 is communicated with the exhaust pipe 13 and the gas storage box 21 is disconnected with the air suction pipe 12, the compressor body 10 can be preheated by a high-temperature refrigerant in the exhaust pipe 13; when the gas storage box 21 is disconnected from the exhaust pipe 13 and the gas storage box 21 is communicated with the air suction pipe 12 through the first pipeline 22 and the exhaust pipeline 24, the low-temperature refrigerant in the air suction pipe 12 cools the compressor body 10 and can heat the low-temperature refrigerant; furthermore, the problems that the liquid refrigerant in the compressor just started is more and the air suction liquid and the oil return of the compressor are unreliable due to poor heat exchange when the air conditioner is heated and the outside temperature is lower can be avoided; the problem of unreliable liquid carrying and oil return of the air suction of the compressor caused by poor heat exchange of the evaporator when the indoor environment temperature and the outdoor environment temperature are lower (low-temperature refrigeration) can be avoided; and the overheat of the temperature of the compressor is avoided, and the running reliability of the compressor is ensured.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of being practiced otherwise than as specifically illustrated and described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A control method of a compressor, applied to the compressor, the compressor comprises a compressor body (10), the compressor body (10) comprises a compressor shell (11), an air suction pipe (12) and an air discharge pipe (13), the compressor further comprises a refrigerant circulation device (20), and the refrigerant circulation device (20) comprises:
a gas storage box (21) arranged on the compressor shell (11);
a first pipeline (22), wherein one end of the first pipeline (22) is connected with the gas storage box (21), the other end of the first pipeline (22) is connected with the gas suction pipe (12), and the first pipeline (22) is connected with the gas suction pipe (12) in an on-off manner;
the second pipeline (23), one end of the second pipeline (23) is connected with the gas storage box (21), the other end of the second pipeline (23) is connected with the exhaust pipe (13), and the second pipeline (23) is connected with the exhaust pipe (13) in an on-off manner;
an exhaust pipeline (24), wherein one end of the exhaust pipeline (24) is connected with the gas storage box (21), the other end of the exhaust pipeline (24) is connected with the gas suction pipe (12), and the exhaust pipeline (24) is connected with the gas suction pipe (12) in an on-off manner;
the compressor body (10) further comprises a liquid storage tank (50), wherein the liquid storage tank (50) is arranged on the air suction pipe (12) and is positioned between the compressor shell (11) and the exhaust pipeline (24); the control method of the compressor is characterized by comprising the following steps:
starting a refrigeration operation, detecting the temperature T2 of the compressor shell (11), and detecting the temperature T3 of the air suction pipe (12);
controlling the second conduit (23) to communicate with the exhaust pipe (13) when the temperature T2 of the compressor housing (11) is less than a third predetermined temperature and T2-T3<3 ℃; -controlling the disconnection of the first conduit (22) from the suction pipe (12); -controlling the disconnection of the exhaust line (24) from the suction pipe (12);
when the temperature T2 of the compressor shell (11) is less than the third preset temperature and is less than or equal to 3 ℃ and less than or equal to T2-T3; or, when the temperature T2 of the compressor housing (11) is greater than or equal to the third predetermined temperature, controlling the second pipe (23) to be disconnected from the exhaust pipe (13); -controlling the first conduit (22) to communicate with the suction pipe (12); the exhaust line (24) is controlled to communicate with the suction pipe (12).
2. The method of controlling a compressor according to claim 1, wherein the third predetermined temperature is 50 ℃.
3. The control method of a compressor according to claim 1, wherein the control method of a compressor further comprises:
starting heating operation and detecting the temperature T1 of a compressor shell (11) of the compressor;
when the temperature T1 of the compressor shell (11) is less than or equal to a first preset temperature, controlling a second pipeline (23) of the compressor to be communicated with a discharge pipe (13) of the compressor; -controlling the disconnection of a first conduit (22) of the compressor from an intake pipe (12) of the compressor; -controlling the disconnection of the discharge line (24) of the compressor from the suction pipe (12);
when the temperature T1 of the compressor shell (11) is greater than or equal to a second preset temperature, the second pipeline (23) is controlled to be disconnected from the exhaust pipe (13); -controlling the first conduit (22) to communicate with the suction pipe (12); -controlling the exhaust line (24) to communicate with the suction pipe (12);
when the temperature T1 of the compressor shell (11) is higher than the first preset temperature and lower than the second preset temperature, the second pipeline (23) is controlled to be disconnected from the exhaust pipe (13); -controlling the disconnection of the first conduit (22) from the suction pipe (12); the exhaust line (24) is controlled to be disconnected from the air suction pipe (12).
4. A control method of a compressor according to claim 3, wherein the first predetermined temperature is 50 ℃ and the second predetermined temperature is 70 ℃.
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