CN218599870U - Air conditioning unit - Google Patents
Air conditioning unit Download PDFInfo
- Publication number
- CN218599870U CN218599870U CN202222521384.4U CN202222521384U CN218599870U CN 218599870 U CN218599870 U CN 218599870U CN 202222521384 U CN202222521384 U CN 202222521384U CN 218599870 U CN218599870 U CN 218599870U
- Authority
- CN
- China
- Prior art keywords
- compressor
- air conditioning
- pipeline
- conditioning unit
- suction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The application discloses air conditioning unit relates to indirect heating equipment technical field, which comprises a compressor, a condenser, an evaporator, the reservoir and the jet line that breathes in, wherein, the cross valve is connected to the gas vent of compressor, the cross valve is connected with condenser and evaporimeter, the reservoir is connected with condenser and evaporimeter, the cross valve still is connected with the air inlet of compressor in addition, the import pipeline and the compressor of jet line connection reservoir of breathing in, the jet line that breathes in is arranged in carrying the refrigerant in the import pipeline of reservoir to the compressor, motor in the cooling compressor. The air conditioning unit can prolong the service life of the compressor, and meanwhile, the normal operation of the air conditioning unit at low temperature can be ensured due to the fact that the air suction flow of the refrigerant of the compressor is increased, so that the air conditioning unit can be applied to areas with lower temperature, popularization and development of the air conditioning unit can be greatly improved, and the application range of the air conditioning unit is greatly enlarged.
Description
Technical Field
The application relates to the technical field of heat exchange equipment, in particular to an air conditioning unit.
Background
As is known, the air source heat pump unit adopts air as clean energy and has high energy utilization efficiency, and therefore, the air source heat pump unit has been increasingly used to replace coal-fired boilers. However, as the air temperature decreases during heating in winter, the evaporation temperature also decreases, and the refrigerant suction flow rate decreases, resulting in insufficient cooling of the motor in the compressor of the air source heat pump unit and failure in operation. Therefore, the air source heat pump unit cannot be applied to western or north areas with lower air temperature, and popularization and development of the air source heat pump technology are greatly limited.
Therefore, how to avoid the reduction of the application range of the air source heat pump unit due to the reduction of the suction flow of the refrigerant during heating in winter is a technical problem that needs to be solved by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an air conditioning unit can be according to the motor in the actual need cooling compressor to can improve the life of compressor, and improve the application scope of unit greatly.
In order to realize the above-mentioned purpose, the application provides an air conditioning unit, including compressor, condenser, evaporimeter and reservoir, the cross valve is connected to the gas vent of compressor, the cross valve is connected with condenser and evaporimeter, the reservoir is connected with condenser and evaporimeter, the cross valve is connected with the air inlet of compressor, still include the spray line of breathing in, the import pipeline and the compressor of reservoir are connected to the spray line of breathing in, the spray line of breathing in is arranged in carrying the refrigerant in the import pipeline of reservoir to the compressor to the motor among the cooling compressor.
In some embodiments, the air suction and liquid spraying pipeline is provided with a control valve, and the control valve is used for controlling the on-off of the air suction and liquid spraying pipeline.
In some embodiments, further comprising:
the detection assembly is arranged in the compressor and used for detecting preset parameters in the compressor;
and the control assembly is connected with the detection assembly and the control valve and used for controlling the opening and closing of the control valve according to the preset parameters detected by the detection assembly.
In some embodiments, the detection assembly includes a temperature sensor for detecting a temperature of the motor and a pressure sensor for detecting a discharge pressure of the compressor.
In some embodiments, the number of temperature sensors is at least two, and the at least two temperature sensors are evenly distributed on the outer circumference of the motor.
In some embodiments, the number of the suction jet lines is at least two, and at least two suction jet lines are used for delivering the refrigerant to each unit of the compressor.
In some embodiments, the at least two suction and injection lines include a first line connecting the inlet line of the accumulator to the inlet port of the compressor and a second line connecting the inlet line of the accumulator to the outlet port of the compressor.
In some embodiments, further comprising:
the outlet pipeline is connected with an outlet of the liquid storage device;
the electronic expansion valve is connected with the outlet pipeline;
the refrigeration pipeline is connected with the electronic expansion valve and the evaporator;
and the heating pipeline is connected with the electronic expansion valve and the condenser.
In some embodiments, a filter is also connected to the outlet conduit.
In some embodiments, the pipeline connecting the inlet pipeline of the liquid storage device and the condenser, the pipeline connecting the inlet pipeline of the liquid storage device and the evaporator, the refrigerating pipeline and the heating pipeline are all connected with one-way valves.
Compared with the background art, the air conditioning unit provided by the embodiment of the application comprises a compressor, a condenser, an evaporator and a liquid storage device, wherein an exhaust port of the compressor is connected with a four-way valve, the four-way valve is connected with the condenser and the evaporator, the liquid storage device is connected with the condenser and the evaporator, and the four-way valve is also connected with an air inlet of the compressor; further, the air conditioning unit also comprises a gas suction and liquid injection pipeline, the gas suction and liquid injection pipeline is connected with an inlet pipeline of the liquid storage device and the compressor, and the gas suction and liquid injection pipeline is used for conveying the refrigerant in the inlet pipeline of the liquid storage device to the compressor so as to cool the motor in the compressor. It should be noted that, the refrigerant of the air conditioning unit flows through the following paths in the cooling mode: after being discharged from an exhaust port, the high-temperature and high-pressure refrigerant gas discharged by the compressor sequentially flows through a four-way valve, a condenser, a liquid storage device, an evaporator, a four-way valve and an air inlet of the compressor; the flow path of the refrigerant of the air conditioning unit in the heating mode is as follows: the high-temperature and high-pressure refrigerant gas discharged by the compressor flows through the four-way valve, the evaporator, the liquid storage device, the condenser, the four-way valve and the air inlet of the compressor in sequence after being discharged from the air outlet.
In practical application, under the low-ring-temperature heating mode, because evaporating temperature is lower, especially when the higher condensing temperature of temperature is also high, the motor calorific capacity of compressor is great, therefore, in order to guarantee the cooling efficiency of the motor in the compressor, the air conditioning unit that this application embodiment provided sets up the spray line of breathing in between the import pipeline of reservoir and compressor, the spray line of breathing in can be carried the refrigerant in the import pipeline of reservoir to the compressor according to actual need, with the motor in the cooling compressor, thereby can improve the life of compressor, meanwhile, because the refrigerant of compressor breathes in the flow increases, can guarantee the normal operating of air conditioning unit under the low temperature, therefore, air conditioning unit can use in the area that the temperature is lower, the popularization and the development of improvement air conditioning unit that can be very big, thereby greatly improve air conditioning unit's application scope.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic connection diagram of an air conditioning unit according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a compressor in the air conditioning unit shown in fig. 1.
Wherein:
1-compressor, 101-exhaust port, 102-air inlet, 2-condenser, 3-evaporator, 4-reservoir, 5-air suction and liquid injection pipeline, 6-control valve, 7-detection component, 8-outlet pipeline, 9-filter, 10-electronic expansion valve, 11-refrigeration pipeline, 12-heating pipeline, 13-first one-way valve, 14-second one-way valve, 15-third one-way valve, 16-fourth one-way valve and 17-four-way valve.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to enable those skilled in the art to better understand the scheme of the present application, the present application will be described in further detail with reference to the accompanying drawings and the detailed description.
It should be noted that the following directional terms such as "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.
Referring to fig. 1 and 2, fig. 1 is a schematic connection diagram of an air conditioning unit according to an embodiment of the present application; fig. 2 is a schematic structural diagram of a compressor in the air conditioning unit shown in fig. 1.
The air conditioning unit that this application embodiment provided, including compressor 1, condenser 2, evaporimeter 3 and reservoir 4, wherein, four-way valve 17 is connected to compressor 1's gas vent 101, and four-way valve 17 is connected with condenser 2 and evaporimeter 3, and reservoir 4 is connected with condenser 2 and evaporimeter 3, and in addition, four-way valve 17 still is connected with compressor 1's air inlet 102.
The four-way valve 17 includes four ports A1, A2, A3, and A4, and among them, the exhaust port 101 of the compressor 1 is connected to the port A1 of the four-way valve 17, the port A2 of the four-way valve 17 is connected to the condenser 2, the port A3 of the four-way valve 17 is connected to the evaporator 3, and the port A4 of the four-way valve 17 is connected to the intake port 102 of the compressor 1.
Meanwhile, the inlet of the liquid storage device 4 is connected with the condenser 2 and the evaporator 3 through pipelines respectively, and the outlet of the liquid storage device 4 is connected with the condenser 2 and the evaporator 3 through pipelines respectively.
In this way, the refrigerant of the air conditioning unit flows through the following paths in the cooling mode: after being discharged from the exhaust port 101, the high-temperature and high-pressure refrigerant gas discharged from the compressor 1 sequentially flows through the four-way valve 17, the condenser 2, the liquid accumulator 4, the evaporator 3, the four-way valve 17 and the air inlet 102 of the compressor 1; the flow path of the refrigerant of the air conditioning unit in the heating mode is as follows: the high-temperature and high-pressure refrigerant gas discharged from the compressor 1 is discharged from the discharge port 101, and then sequentially flows through the four-way valve 17, the evaporator 3, the accumulator 4, the condenser 2, the four-way valve 17, and the air inlet 102 of the compressor 1.
Further, the air conditioning unit further comprises a gas suction and liquid injection pipeline 5, the gas suction and liquid injection pipeline 5 is connected with an inlet pipeline of the liquid storage device 4 and the compressor 1, and the gas suction and liquid injection pipeline 5 is used for conveying the refrigerant in the inlet pipeline of the liquid storage device 4 to the compressor 1 so as to cool the motor in the compressor 1.
In practical application, in a low-loop-temperature heating mode, because the evaporating temperature is low, especially when the water temperature is high and the condensing temperature is also high, the heat productivity of the motor of the compressor 1 is large, therefore, in order to ensure the cooling efficiency of the motor in the compressor 1, the air conditioning unit provided by the embodiment of the application is provided with the air suction and injection pipeline 5 between the inlet pipeline of the liquid storage device 4 and the compressor 1, the air suction and injection pipeline 5 can convey the refrigerant in the inlet pipeline of the liquid storage device 4 to the compressor 1 according to actual needs, so as to cool the motor in the compressor 1, so that the service life of the compressor 1 can be prolonged, meanwhile, because the air suction flow of the refrigerant of the compressor 1 is increased, the normal operation of the air conditioning unit at a low temperature can be ensured, therefore, the air conditioning unit can be applied to areas with lower air temperature, the popularization and development of the air conditioning unit can be greatly improved, and the application range of the air conditioning unit is greatly improved.
In some embodiments, the suction-injection line 5 connects the inlet line of the accumulator 4 with the compressor 1, and a nozzle may be provided at the end of the suction-injection line 5 for injecting refrigerant into the air inlet 102 of the compressor 1 to improve the cooling efficiency.
In order to control the on-off of the gas-suction liquid-spraying pipeline 5, a control valve 6 is arranged on the gas-suction liquid-spraying pipeline 5, and the control valve 6 is used for controlling the on-off of the gas-suction liquid-spraying pipeline 5.
Preferably, the control valve 6 may be a solenoid valve.
In some embodiments, the air conditioning unit further includes a detection component 7 and a control component, wherein the detection component 7 is disposed in the compressor 1, the detection component 7 is used for detecting preset parameters in the compressor 1, the control component is connected with the detection component 7 and the control valve 6, and the control component is used for controlling the opening and closing of the control valve 6 according to the preset parameters detected by the detection component 7.
Of course, the detecting component 7 specifically includes a temperature sensor and a pressure sensor according to actual requirements, the temperature sensor is used for detecting the temperature of the motor, and the pressure sensor is used for detecting the exhaust pressure of the compressor 1.
Heat-related parameters of the motor in the compressor 1 are collected through the detection assembly 7, and the motor is cooled and controlled to realize cooling as required, so that the temperature of the motor is controlled in a reasonable interval.
It should be noted that above-mentioned control assembly can be for the controller that air conditioning unit was equipped with, for example PLC, PLC can judge whether need open the solenoid valve according to the temperature value of the motor that temperature sensor detected and the exhaust pressure value of compressor 1 that pressure sensor detected, when the temperature value of the motor that temperature sensor detected is higher than the default, PLC control solenoid valve is electrified and is opened, thereby open air suction spray liquid pipeline 5, so, refrigerant in the inlet pipeline of reservoir 4 can be under the pressure effect automatic transport to compressor 1 in, in order to reduce compressor 1's inspiratory temperature, realize the motor among the cooling compressor 1, ensure that the motor can obtain abundant cooling when the higher bad operating mode that generates heat.
When the temperature of the motor is reduced to a safe value, the PLC controls the electromagnetic valve on the air suction and liquid injection pipeline 5 to be closed.
In order to avoid that the suction liquid-spraying pipeline 5 can excessively convey the refrigerant to cause the suction liquid entrainment of the compressor 1, the exhaust superheat degree of the compressor 1 is detected in real time according to a pressure sensor and a temperature sensor which are arranged in the compressor 1 (the judgment of the superheat degree is related to the temperature of a motor in the compressor 1 and the pressure of an exhaust port 101 of the compressor 1, generally, the lower the temperature is, the higher the exhaust pressure is, and the lower the superheat degree is), and when the superheat degree is lower than a judgment value, the PLC also closes an electromagnetic valve on the suction liquid-spraying pipeline 5 so as to avoid that the liquid entrainment operation of the compressor 1 caused by excessive liquid spraying cooling affects the service life of the compressor 1.
It should be noted that the opening and closing functions of the electromagnetic valve and the control function of the controller are technical contents known to those skilled in the art, and are not the protection focus of the present application, and the present application focuses on achieving the purpose of controlling the on-off of the gas-suction liquid-injection pipeline 5 according to the actual situation through the connection relationship between the controller, the electromagnetic valve and the gas-suction liquid-injection pipeline 5.
In some embodiments, the number of temperature sensors is at least two, and the at least two temperature sensors are evenly distributed on the outer circumference of the motor.
In practical application, because the heat generated by the motor is not uniform, the number of the temperature sensors added in the embodiment can be three, and the three temperature sensors are uniformly distributed on the periphery of the motor. Of course, the number of the temperature sensors may be arranged according to actual conditions in consideration of the size of the space in which the compressor 1 is disposed, and theoretically, the more the number of the temperature sensors is arranged, the more the detected temperature is closer to the real conditions.
In some embodiments, one or at least two suction-injection lines 5 are provided in number, at least two suction-injection lines 5 being used to deliver refrigerant to the various units of the compressor 1, the compressor 1 being provided with a corresponding cooling interface.
Preferably, the at least two gas-suction liquid-injection pipelines 5 include a first pipeline and a second pipeline, the first pipeline is a gas-suction liquid-injection pipeline, the second pipeline is a gas-discharge liquid-injection pipeline, the first pipeline connects an inlet pipeline of the liquid accumulator 4 with the gas inlet 102 of the compressor 1, and the first pipeline is used for delivering a refrigerant to the gas inlet 102 of the compressor 1 to reduce the gas-suction temperature of the compressor 1; a second line connects the inlet line of the accumulator 4 with the discharge port 101 of the compressor 1, and the second line is used for delivering refrigerant to the discharge port 101 of the compressor 1 to reduce the discharge temperature of the compressor 1.
In some embodiments, the air conditioning unit further includes an outlet pipe 8, an electronic expansion valve 10, a cooling pipe 11 and a heating pipe 12, wherein the outlet pipe 8 is connected to the outlet of the liquid reservoir 4, the electronic expansion valve 10 is connected to the outlet pipe 8, the cooling pipe 11 is connected to the electronic expansion valve 10 and the evaporator 3, and the heating pipe 12 is connected to the electronic expansion valve 10 and the condenser 2.
Furthermore, a filter 9 is connected to the outlet line 8, and the filter 9 is used for filtering and cleaning the refrigerant.
In some embodiments, a pipeline connecting the inlet pipeline of the liquid storage 4 with the condenser 2, a pipeline connecting the inlet pipeline of the liquid storage 4 with the evaporator 3, and a refrigerating pipeline 11 and a heating pipeline 12 are all connected with one-way valves. Specifically, the pipe connection that the inlet pipeline of reservoir 4 and condenser 2 are connected has first check valve 13, and the pipe connection that the inlet pipeline of reservoir 4 and evaporimeter 3 are connected has second check valve 14, and refrigeration pipeline 11 is connected with third check valve 15, is connected with fourth check valve 16 on the heating pipeline 12 to guarantee air conditioning unit's steady operation.
As such, the refrigerant flow path in the cooling mode is: the high-temperature and high-pressure refrigerant gas discharged from the compressor 1 is discharged from the gas outlet 101, and then sequentially flows through the four-way valve 17, the condenser 2, the first check valve 13, the liquid storage device 4, the filter 9, the electronic expansion valve 10, the third check valve 15, the evaporator 3, the four-way valve 17, and the gas inlet of the compressor 1. The refrigerant flow path in the heating mode is: the high-temperature and high-pressure refrigerant gas discharged from the compressor 1 is discharged from the discharge port 101, and then sequentially flows through the four-way valve 17, the evaporator 3, the second check valve 14, the liquid reservoir 4, the filter 9, the electronic expansion valve 10, the fourth check valve 16, the condenser 2, the four-way valve 17, and the suction port of the compressor 1.
To sum up, the air conditioning unit that this application embodiment provided designs and reforms transform compressor 1, to its increase temperature sensor, pressure sensor, add the gas suction liquid injection pipeline 5 simultaneously to reduce the temperature of compressor 1 entry, thereby solve the problem that the motor cooling is not enough when low ring temperature heats and the higher operating mode of temperature leads to the high temperature and can't move. When the detected motor temperature is higher, the gas-suction liquid-injection pipeline 5 is opened, and the exhaust pressure and the motor temperature are detected while cooling, so that the exhaust superheat degree is judged, and the damage caused by the liquid-carrying operation of the compressor 1 after the gas-suction liquid-injection pipeline 5 is excessively opened is avoided.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The air conditioning unit provided by the application is described in detail above. The principle and the implementation of the present application are explained herein by using specific examples, and the above descriptions of the examples are only used to help understand the scheme and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (10)
1. An air conditioning unit is characterized by comprising a compressor, a condenser, an evaporator and a liquid storage device, wherein an exhaust port of the compressor is connected with a four-way valve, the four-way valve is connected with the condenser and the evaporator, the liquid storage device is connected with the condenser and the evaporator, the four-way valve is connected with an air inlet of the compressor, the air conditioning unit further comprises an air suction and liquid spraying pipeline, the air suction and liquid spraying pipeline is connected with an inlet pipeline of the liquid storage device and the compressor, and the air suction and liquid spraying pipeline is used for conveying a refrigerant in the inlet pipeline of the liquid storage device to the compressor so as to cool a motor in the compressor.
2. The air conditioning assembly as set forth in claim 1, wherein a control valve is disposed on said suction/spray line for controlling the opening/closing of said suction/spray line.
3. The air conditioning assembly as set forth in claim 2, further comprising:
the detection assembly is arranged in the compressor and used for detecting preset parameters in the compressor;
and the control assembly is connected with the detection assembly and the control valve and is used for controlling the opening and closing of the control valve according to the preset parameters detected by the detection assembly.
4. The air conditioning assembly as set forth in claim 3 wherein said sensing assembly includes a temperature sensor for sensing the temperature of said motor and a pressure sensor for sensing the discharge pressure of said compressor.
5. The air conditioning assembly as set forth in claim 4, wherein the number of said temperature sensors is at least two, and at least two of said temperature sensors are evenly distributed on the outer periphery of said motor.
6. Air conditioning assembly according to any of claims 1 to 5, characterized in that said suction and injection lines are provided in a number of at least two for delivering refrigerant to each unit of said compressor.
7. The air conditioning assembly as set forth in claim 6 wherein said at least two suction and injection lines include a first line connecting an inlet line of said accumulator to an air inlet of said compressor and a second line connecting an inlet line of said accumulator to an air outlet of said compressor.
8. The air conditioning assembly as set forth in claim 1, further comprising:
the outlet pipeline is connected with an outlet of the liquid storage device;
the electronic expansion valve is connected with the outlet pipeline;
the refrigeration pipeline is connected with the electronic expansion valve and the evaporator;
and the heating pipeline is connected with the electronic expansion valve and the condenser.
9. An air conditioning assembly as set forth in claim 8 wherein a filter is also connected to said outlet duct.
10. The air conditioning unit as set forth in claim 8, wherein a line connecting an inlet line of said accumulator to said condenser, a line connecting an inlet line of said accumulator to said evaporator, said refrigeration line and said heating line are connected to check valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222521384.4U CN218599870U (en) | 2022-09-22 | 2022-09-22 | Air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222521384.4U CN218599870U (en) | 2022-09-22 | 2022-09-22 | Air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218599870U true CN218599870U (en) | 2023-03-10 |
Family
ID=85401078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222521384.4U Active CN218599870U (en) | 2022-09-22 | 2022-09-22 | Air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218599870U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498555A (en) * | 2023-04-04 | 2023-07-28 | 麦克维尔空调制冷(苏州)有限公司 | Semi-closed refrigeration compressor |
-
2022
- 2022-09-22 CN CN202222521384.4U patent/CN218599870U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498555A (en) * | 2023-04-04 | 2023-07-28 | 麦克维尔空调制冷(苏州)有限公司 | Semi-closed refrigeration compressor |
| CN116498555B (en) * | 2023-04-04 | 2023-10-31 | 麦克维尔空调制冷(苏州)有限公司 | Semi-closed refrigeration compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103629873B (en) | The control method of Two-stage Compression air-conditioning system | |
| CN203286821U (en) | Two-stage enthalpy-increasing air conditioning system | |
| CN104613665A (en) | Heat pump air conditioning system | |
| CN104879940A (en) | Air conditioning system and control method thereof | |
| CN218599870U (en) | Air conditioning unit | |
| CN204494894U (en) | Heat pump air conditioning system | |
| CN106801954A (en) | A kind of Gas-supplying enthalpy-increasing system and its control method, air-conditioner | |
| CN216925082U (en) | Novel closed heat pump drying system | |
| CN1982798A (en) | Air supplementing system and air supplementing control method for compressor | |
| CN2896146Y (en) | Heat pump air conditioning system and steam injection control device thereof | |
| CN202328962U (en) | Water heater system of condensation heat defrosting air conditioner | |
| CN202133170U (en) | Liquid level control system of flooded refrigerating unit | |
| CN203464542U (en) | Air source low-temperature two-stage compression heat pump air conditioner | |
| CN105444454A (en) | Pressure control type air energy water heater and control method | |
| CN104949375A (en) | Air conditioning system and refrigerant regulation control method thereof | |
| CN209085127U (en) | Air-conditioning system | |
| CN105627613A (en) | Outdoor unit for air conditioner and air conditioner | |
| CN201852387U (en) | Manifold hot freon defrosting and refrigerating system | |
| CN214223467U (en) | Regenerative liquid accumulator and machine room refrigerating system | |
| CN210463646U (en) | Heat pump system | |
| CN209893675U (en) | Cooling and heating type heat recovery system and single cooling type heat recovery system | |
| CN209655524U (en) | Air-conditioning heat recovery system | |
| CN205383810U (en) | Accuse pressure formula air can water heater | |
| CN112254382A (en) | Multi-connected power heat pipe air conditioner outdoor unit and control method | |
| CN2786506Y (en) | Water heater capable of reliable defrosting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |