CN112539581A - Air conditioning unit, refrigeration equipment and control method of air conditioning unit - Google Patents
Air conditioning unit, refrigeration equipment and control method of air conditioning unit Download PDFInfo
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- CN112539581A CN112539581A CN202011471195.XA CN202011471195A CN112539581A CN 112539581 A CN112539581 A CN 112539581A CN 202011471195 A CN202011471195 A CN 202011471195A CN 112539581 A CN112539581 A CN 112539581A
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- heat exchanger
- refrigerant
- air conditioning
- compressor
- conditioning unit
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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
- F25B49/022—Compressor control arrangements
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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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
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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
- F25B2600/00—Control issues
- F25B2600/13—Pump speed control
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application provides a control method of air conditioning unit, refrigeration plant and air conditioning unit, including first temperature regulation system and second temperature regulation system, first temperature regulation system includes first heat exchanger and second heat exchanger, second temperature regulation system includes power portion and refrigerant passageway, first heat exchanger with the second heat exchanger sets up on the refrigerant passageway, power portion can drive the refrigerant and get into first heat exchanger with in the second heat exchanger. The application provides an air conditioning unit, refrigeration equipment and a control method of the air conditioning unit, which can utilize external environment resources and reduce consumed energy.
Description
Technical Field
The application belongs to the technical field of air conditioning, and particularly relates to an air conditioning unit, refrigeration equipment and a control method of the air conditioning unit.
Background
In order to refrigerate frozen goods during long-distance transport, air conditioning units are often installed on the transport vehicles to provide cooling energy. However, the existing air conditioning unit for transportation can only compress the refrigerant by the compressor to do work, and then performs heat exchange and refrigeration by the heat exchanger, so that external environment resources are not fully utilized, the consumed energy is high, and energy waste is caused.
Disclosure of Invention
Therefore, an object of the present invention is to provide an air conditioning unit, a refrigeration device, and a control method for an air conditioning unit, which can reduce energy consumption by using external environmental resources.
In order to solve the problem, the application provides an air conditioning unit, including first temperature regulation system and second temperature regulation system, first temperature regulation system includes first heat exchanger and second heat exchanger, second temperature regulation system includes power portion and refrigerant passageway, first heat exchanger with the second heat exchanger sets up on the refrigerant passageway, power portion can drive the refrigerant entering first heat exchanger with in the second heat exchanger.
Optionally, the power part includes a power pump, and the power pump can drive the refrigerant to flow through the first heat exchanger and the second heat exchanger in sequence.
Optionally, the power part further comprises a compressor, the compressor is connected with the power part in parallel, and the compressor can drive a refrigerant to flow through the first heat exchanger and the second heat exchanger in sequence.
Optionally, the power unit includes a first branch and a second branch, an inlet of the first branch is communicated with an outlet of the refrigerant channel, an outlet of the first branch is communicated with an inlet of the refrigerant channel, an inlet of the second branch is communicated with an outlet of the refrigerant channel, an outlet of the second branch is communicated with an inlet of the refrigerant channel, the compressor is disposed on the first branch, the power pump is disposed on the second branch, the first branch is further provided with a first control valve, and the second branch is further provided with a second control valve.
Optionally, a channel valve set is arranged on the refrigerant channel.
Optionally, the air conditioning unit further includes a condensing fan and a converter, where the converter is connected to the condensing fan to convert mechanical energy generated by rotation of the condensing fan into electrical energy when the condensing fan is driven by external air to rotate.
In another aspect of the application, a refrigeration device is provided, comprising an air conditioning unit as described above.
Optionally, the refrigeration apparatus includes a refrigeration container, the first heat exchanger is disposed outside the refrigeration container, and the second heat exchanger is disposed inside the refrigeration container.
In another aspect of the present application, a control method of an air conditioning unit is provided for controlling the air conditioning unit as described above.
Optionally, the temperature T1 of the environment where the first heat exchanger is located, the temperature T2 of the environment where the second heat exchanger is located, and the working condition of the second temperature adjustment system are obtained, the difference between T1 and T2 is calculated, and based on the working condition of the second temperature adjustment system and the difference between T1 and T2, the power portion is controlled to drive the refrigerant to sequentially flow through the first heat exchanger and the second heat exchanger.
Optionally, when the power unit includes a power pump and a compressor, and the second temperature adjustment system is in the first refrigeration operating condition, the refrigeration target value of the first refrigeration operating condition is a, and if T2 is greater than a, and T2 is greater than T1, the compressor is stopped, and the power pump is controlled to drive the refrigerant to sequentially flow through the first heat exchanger and the second heat exchanger.
Optionally, when the power unit includes a power pump and a compressor, and the second temperature adjustment system is in the second refrigeration working condition, the refrigeration target value of the second refrigeration working condition is B, and if T2 is greater than B, the power pump stops, and the compressor is controlled to drive the refrigerant to sequentially flow through the first heat exchanger and the second heat exchanger.
Optionally, when the power unit includes a power pump and a compressor, and the second temperature adjustment system is in a defrosting condition, if T1 is greater than 0 ℃, the compressor is stopped, and the power pump is controlled to drive the refrigerant to sequentially flow through the first heat exchanger and the second heat exchanger.
Optionally, when the air conditioner set includes a condensing fan, the operating state of the condensing fan is obtained, and when the condensing fan is not in a heat dissipation state, the second temperature adjustment system is controlled to start an energy collection state.
Advantageous effects
The air conditioning unit, the refrigeration equipment and the control method of the air conditioning unit provided by the embodiment of the invention can utilize external environment resources and reduce consumed energy.
Drawings
Fig. 1 is a schematic diagram of a system according to an embodiment of the present application.
The reference numerals are represented as:
1. a first heat exchanger; 2. a second heat exchanger; 3. a compressor; 4. a first control valve; 5. a power pump; 6. a second control valve; 7. a third control valve; 8. an electronic expansion valve; 9. a converter; 10. and a controller.
Detailed Description
Referring to fig. 1 in combination, according to an embodiment of the present application, an air conditioning unit includes a first temperature adjustment system and a second temperature adjustment system, the first temperature adjustment system includes a first heat exchanger 1 and a second heat exchanger 2, the second temperature adjustment system includes a power portion and a refrigerant channel, the first heat exchanger 1 and the second heat exchanger 2 are disposed on the refrigerant channel, the power portion can drive the refrigerant to enter the first heat exchanger 1 and the second heat exchanger 2, and the environment where the second heat exchanger 2 is located can be adjusted in temperature by using heat or cold of the environment where the first heat exchanger 1 is located, so that external environment resources are utilized, and consumed energy is reduced.
Further, in order to realize temperature adjustment, the first heat exchanger 1 and the second heat exchanger 2 are not located in the same environment, that is, there is a temperature difference between the environment where the first heat exchanger 1 is located and the environment where the second heat exchanger 2 is located. In the present embodiment, the first heat exchanger 1 is located in an external open environment, and the second heat exchanger 2 is located in an internal space environment.
Furthermore, the power part drives the refrigerant to reach the first heat exchanger 1 along the refrigerant channel, and exchanges heat from the first heat exchanger 1, the refrigerant flows out of the first heat exchanger 1 and then reaches the second heat exchanger 2, and the cold or heat obtained from the first heat exchanger 1 is transferred to the environment where the second heat exchanger 2 is located, so that the temperature of the environment where the second heat exchanger 2 is located is adjusted.
Further, when the temperature of the environment where the first heat exchanger 1 is located is lower than the temperature of the environment where the second heat exchanger 2 is located, the effect of refrigerating the environment where the second heat exchanger 2 is located is achieved. When the temperature of the environment where the first heat exchanger 1 is located is higher than the temperature of the environment where the second heat exchanger 2 is located, the effect of heating the environment where the second heat exchanger 2 is located is achieved.
The power portion includes power pump 5, and power pump 5 can drive the refrigerant and flow through first heat exchanger 1 and second heat exchanger 2 in proper order, realizes driving the refrigerant through setting up power pump 5 and flows in refrigerant passageway, and the required energy of power pump 5 operation is far less than the required energy of compressor 3 operation, has reduced energy loss.
Further, when the temperature of the environment where the first heat exchanger 1 is located is low and the temperature of the environment where the second heat exchanger is located is high, or when there is no high requirement for the cooling and heating speed, and the refrigerant is driven to flow by the power pump 5, the temperature for heating the refrigerant by the power pump 5 is extremely low, and only the function of providing power is achieved. And the compressor 3 in the first temperature regulating system greatly increases the temperature of the refrigerant during operation, and consumes more energy, and compared with the utilization of the cold quantity or heat quantity of the external space, the capacity consumed by the compressor 3 in the first temperature regulating system for realizing refrigeration is obviously higher.
The power portion still includes compressor 3, and compressor 3 sets up with power portion parallelly connected, and compressor 3 can drive the refrigerant and flow through first heat exchanger 1 and second heat exchanger 2 in proper order, through set up compressor 3 in second temperature governing system, can realize refrigerating fast the environment that second heat exchanger 2 is located.
Further, the compressor 3 and the power section are not normally operated at the same time.
The power part comprises a first branch and a second branch, an inlet of the first branch is communicated with an outlet of the refrigerant channel, an outlet of the first branch is communicated with an inlet of the refrigerant channel, an inlet of the second branch is communicated with an outlet of the refrigerant channel, an outlet of the second branch is communicated with an inlet of the refrigerant channel, the compressor 3 is arranged on the first branch, the power pump 5 is arranged on the second branch, the first branch is further provided with a first control valve 4, and the second branch is further provided with a second control valve 6. The compressor 3 and the power pump 5 can be controlled by providing the first branch and the second branch, providing the first control valve 4 in the first branch, and providing the second control valve 6 in the second branch.
Further, the first control valve 4 and the second control valve 6 are both solenoid valves.
And a channel valve group is arranged on the refrigerant channel, so that the on-off of a main circulation loop of the second temperature adjusting system can be controlled.
Further, the channel valve group comprises a third control valve 7 and an electronic expansion valve 8, and the third control valve 7 is arranged in parallel with the electronic expansion valve 8. When the power pump 5 is running, the electronic expansion valve 8 is closed and the third control valve 7 is opened. When the compressor 3 is operated, the electronic expansion valve 8 is opened and the third control valve 7 is closed.
Further, the third control valve 7 is an electromagnetic valve.
Air conditioning unit still includes condensing fan and converter 9, converter 9 meets with condensing fan, when outside air drives condensing fan and rotates, mechanical energy that rotates the production of condensing fan is the electric energy, through setting up condensing fan and converter 9, can be when first temperature regulation system does not use condensing fan, it is rotatory to drive condensing fan through external wind-force, and collect the energy that produces when condensing fan is rotatory, convert mechanical energy into the electric energy, supply the operation of second temperature regulation system to use, further practiced thrift the energy.
Furthermore, the electric energy collected by the condenser fan and the converter 9 can be directly used by the second temperature adjusting system, and the electric energy can also be stored by a battery and then supplied to the second temperature adjusting system by the battery.
The second temperature adjustment system further comprises a controller 10, wherein the controller 10 is electrically connected with the power pump 5, the compressor 3 and the converter 9 and is used for controlling the power pump 5, the compressor 3 and the converter 9.
In another aspect of the present embodiment, a refrigeration device is provided, which includes the air conditioning unit as described above.
The refrigeration equipment comprises a refrigerating box, wherein the first heat exchanger 1 is arranged outside the refrigerating box, and the second heat exchanger 2 is arranged in the refrigerating box.
Further, the refrigeration equipment is a refrigerator car, and the refrigerator car is used for storing articles such as food. The first heat exchanger 1 is arranged outside the refrigerating box, the second heat exchanger 2 is arranged inside the refrigerating box, and the second heat exchanger 2 is used for refrigerating inside the refrigerating box.
In another aspect of the present embodiment, a control method of an air conditioning unit is provided, which is used for controlling the air conditioning unit as described above.
The temperature T1 of the environment where the first heat exchanger 1 is located, the temperature T2 of the environment where the second heat exchanger 2 is located and the working condition of the second temperature adjusting system are obtained, the difference value between T1 and T2 is calculated, and based on the working condition of the second temperature adjusting system and the difference value between T1 and T2, the power portion is controlled to drive the refrigerant to flow through the first heat exchanger 1 and the second heat exchanger 2 in sequence. The temperature of the environment where the second heat exchanger 2 is located can be adjusted by utilizing the heat or cold of the environment where the first heat exchanger 1 is located, so that the utilization of external environment resources is realized, and the consumed energy is reduced.
When the power part comprises the power pump 5 and the compressor 3 and the second temperature adjusting system is in the first refrigeration working condition, the refrigeration target value of the first refrigeration working condition is A, if T2 is greater than A and T2 is greater than T1, the compressor 3 stops, and the power pump 5 is controlled to drive the refrigerant to flow through the first heat exchanger 1 and the second heat exchanger 2 in sequence.
Furthermore, the first refrigeration working condition is a slow refrigeration mode, and external environment cold energy is adopted for refrigeration, so that the energy consumption is low.
Further, when the difference between T2 and A is small, the first refrigeration working condition can be adopted, and energy is saved. For example, T2 is 5 ℃ higher than A.
Furthermore, when the temperature difference between T2 and T1 is large, the first refrigeration working condition is adopted for refrigeration, energy is saved, and a good refrigeration effect can be guaranteed, for example, T2 is 10 ℃ higher than T1.
When the power part comprises the power pump 5 and the compressor 3 and the second temperature adjusting system is in the second refrigeration working condition, the refrigeration target value of the second refrigeration working condition is B, if T2 is greater than B, the power pump 5 stops, and the compressor 3 is controlled to drive the refrigerant to flow through the first heat exchanger 1 and the second heat exchanger 2 in sequence.
Further, the second refrigeration operating mode is quick refrigeration mode, adopts compressor 3 and first heat exchanger 1, the cooperation of second heat exchanger 2 to refrigerate, can be quick refrigerate in the fridge.
Further, when T2 is great with the difference of B, can adopt the second refrigeration operating mode, can cool down fast, guarantee the new freshness of food. For example, T2 is 10 ℃ higher than B.
Furthermore, when the temperature difference between T2 and T1 is small, the second refrigeration working condition is adopted for refrigeration, and the temperature in the refrigerator can be accurately controlled. For example, T2 is 1 ℃ higher than T1.
When the power part comprises the power pump 5 and the compressor 3 and the second temperature regulating system is in a defrosting working condition, if T1 is greater than 0 ℃, the compressor 3 stops, the power pump 5 is controlled to drive the refrigerant to flow through the first heat exchanger 1 and the second heat exchanger 2 in sequence, external environment heat is adopted for defrosting, and energy consumption is low.
When the air conditioning unit comprises the condensing fan, the working state of the condensing fan is obtained, and when the condensing fan is not in a heat dissipation state, the second temperature adjusting system is controlled to start an energy collection state.
Further, the condensing fan is in a heat dissipation state, that is, the condensing fan blows air to the first heat exchanger 1 for heat dissipation. The condensing fan is not in a heat dissipation state, that is, the condensing fan does not blow the first heat exchanger 1 to dissipate heat.
Further, when the condensing fan does not blow and dissipate heat of the first heat exchanger 1, the condensing fan is driven to rotate by wind outside the vehicle, and then energy is collected.
Further, the starting energy collection state of the second temperature regulation system is that the converter 9 is controlled to be started, and mechanical energy generated by rotation of the condensing fan is converted into electric energy for the second temperature regulation system to use. Or the mechanical energy generated by the rotation of the condensing fan is converted into electric energy and then stored for the subsequent use of the second temperature regulating system.
The air conditioning unit, the refrigeration equipment and the control method of the air conditioning unit provided by the embodiment of the invention can utilize external environment resources and reduce consumed energy.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (14)
1. The utility model provides an air conditioning unit, its characterized in that includes first temperature governing system and second temperature governing system, first temperature governing system includes first heat exchanger and second heat exchanger, second temperature governing system includes power portion and refrigerant passageway, first heat exchanger with the second heat exchanger sets up on the refrigerant passageway, power portion can drive the refrigerant and get into in the first heat exchanger with the second heat exchanger.
2. The air conditioning unit as set forth in claim 1, wherein the power unit includes a power pump, and the power pump is capable of driving a refrigerant to flow through the first heat exchanger and the second heat exchanger in sequence.
3. The air conditioning unit as set forth in claim 2, wherein the power unit further comprises a compressor, the compressor is connected in parallel with the power unit, and the compressor can drive the refrigerant to flow through the first heat exchanger and the second heat exchanger in sequence.
4. An air conditioning unit according to claim 3, wherein the power unit includes a first branch and a second branch, an inlet of the first branch is communicated with an outlet of the refrigerant passage, an outlet of the first branch is communicated with an inlet of the refrigerant passage, an inlet of the second branch is communicated with an outlet of the refrigerant passage, an outlet of the second branch is communicated with an inlet of the refrigerant passage, the compressor is disposed on the first branch, the power pump is disposed on the second branch, the first branch is further provided with a first control valve, and the second branch is further provided with a second control valve.
5. The air conditioning unit as claimed in claim 1, wherein the refrigerant channel is provided with a channel valve set.
6. The air conditioning assembly as set forth in claim 1, further comprising a condensing fan and a converter connected to the condensing fan for converting mechanical energy generated by rotation of the condensing fan into electrical energy when the condensing fan is rotated by external air.
7. Refrigeration appliance, characterized in that it comprises an air conditioning unit as claimed in any one of claims 1 to 6.
8. The refrigeration appliance of claim 7 wherein the refrigeration appliance includes a refrigeration container, the first heat exchanger is disposed outside of the refrigeration container, and the second heat exchanger is disposed within the refrigeration container.
9. A control method of an air conditioning unit for controlling the air conditioning unit as claimed in any one of claims 1 to 6.
10. The control method of claim 9, wherein a temperature T1 of an environment in which the first heat exchanger is located, a temperature T2 of an environment in which the second heat exchanger is located, and a working condition of the second temperature regulating system are obtained, a difference between T1 and T2 is calculated, and based on the working condition of the second temperature regulating system and the difference between T1 and T2, the power portion is controlled to drive the refrigerant to sequentially flow through the first heat exchanger and the second heat exchanger.
11. The control method of claim 10, wherein when the power unit comprises a power pump and a compressor and the second temperature regulating system is in the first cooling condition, the cooling target value of the first cooling condition is a, and if T2 > a and T2 > T1, the compressor is stopped, and the power pump is controlled to drive the refrigerant to flow through the first heat exchanger and the second heat exchanger in sequence.
12. The control method as claimed in claim 10, wherein when the power part includes a power pump and a compressor, and the second temperature adjustment system is in the second cooling condition, the cooling target value of the second cooling condition is B, and if T2 > B, the power pump is stopped, and the compressor is controlled to drive the refrigerant to flow through the first heat exchanger and the second heat exchanger in sequence.
13. The control method as claimed in claim 10, wherein when the power part comprises a power pump and a compressor and the second temperature regulating system is in a defrosting condition, if T1 is greater than 0 ℃, the compressor is stopped, and the power pump is controlled to drive the refrigerant to flow through the first heat exchanger and the second heat exchanger in sequence.
14. The control method according to claim 9, wherein when the air conditioner group includes a condensing fan, the operating state of the condensing fan is acquired, and when the condensing fan is not in a heat radiating state, the second temperature adjusting system is controlled to start the energy collecting state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011471195.XA CN112539581A (en) | 2020-12-14 | 2020-12-14 | Air conditioning unit, refrigeration equipment and control method of air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011471195.XA CN112539581A (en) | 2020-12-14 | 2020-12-14 | Air conditioning unit, refrigeration equipment and control method of air conditioning unit |
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| CN112539581A true CN112539581A (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011471195.XA Pending CN112539581A (en) | 2020-12-14 | 2020-12-14 | Air conditioning unit, refrigeration equipment and control method of air conditioning unit |
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