CN217031657U

CN217031657U - Air conditioning unit

Info

Publication number: CN217031657U
Application number: CN202123075265.2U
Authority: CN
Inventors: 陈斌; 夏涛; 宛宇; 王传华; 罗来平
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-07-22
Anticipated expiration: 2031-12-08

Abstract

The utility model discloses an air conditioning unit, wherein the air conditioning unit comprises: the system comprises a compressor, a four-way valve, a condenser, a first throttling device and an evaporator; three-in-one regenerator includes: the gas-liquid separator is arranged in the liquid storage device; and one end of the working medium pump is connected with the second inlet/outlet of the liquid refrigerant, and the other end of the working medium pump is connected with the inlet of the evaporator, and the working medium pump is used for being started in a low-temperature refrigeration mode and controlling the refrigerant to circulate in a refrigerant circulation loop formed by the second inlet/outlet of the liquid refrigerant, the working medium pump, the evaporator, the four-way valve, the gaseous refrigerant inlet, the first gaseous refrigerant outlet, the evaporator and the first inlet/outlet of the liquid refrigerant. The utility model solves the problem of energy waste caused by the starting refrigeration mode of the air conditioner in the low-temperature environment in the prior art, can effectively utilize the cold energy of the low-temperature environment, is energy-saving and environment-friendly, and can effectively improve the energy efficiency.

Description

Air conditioning unit

Technical Field

The utility model relates to the technical field of air conditioners, in particular to an air conditioning unit.

Background

With the progress of science and technology, the living standard of people is improved, and the energy consumption is increased. Building energy consumption has become a huge head, wherein the energy consumption of heating, ventilating and air conditioning occupies a main position. At present, most air conditioning units only have basic functions of refrigeration, heating, defrosting and the like, and the units are started to refrigerate under the condition that the environmental temperature is low but refrigeration is needed, so that energy waste is caused, and the service life of the units is even influenced; when defrosting is needed in the heating process, a refrigeration cycle needs to be started for defrosting, so that the unit cannot continuously heat, and the comfort level is influenced.

Aiming at the problem of energy waste caused by the starting refrigeration mode of the air conditioner in the low-temperature environment in the related technology, no effective solution is provided at present.

SUMMERY OF THE UTILITY MODEL

The utility model provides an air conditioning unit, which at least solves the problem of energy waste caused by starting a refrigeration mode of an air conditioner in a low-temperature environment in the prior art.

In order to solve the above technical problem, according to an aspect of an embodiment of the present invention, there is provided an air conditioning unit, including a compressor, a four-way valve, a condenser, a first throttling device, and an evaporator, which are connected in sequence, further including:

three-in-one regenerator includes: the liquid storage device is provided with a first inlet and a second inlet of liquid refrigerant and a second inlet and a second outlet of liquid refrigerant, and the gas-liquid separator is provided with a gas refrigerant inlet and a first gas refrigerant outlet; the outlet of the condenser is connected with a first inlet and outlet of a liquid refrigerant, a second inlet and outlet of the liquid refrigerant is connected with the inlet of the evaporator through a first throttling device, the outlet of the evaporator is connected with the inlet of a gaseous refrigerant through a four-way valve, and the outlet of the first gaseous refrigerant is connected with the air suction port of the compressor; the first gaseous refrigerant outlet is also connected with the inlet of the condenser;

and one end of the working medium pump is connected with the second inlet/outlet of the liquid refrigerant, and the other end of the working medium pump is connected with the inlet of the evaporator, and the working medium pump is used for being started in a low-temperature refrigeration mode and controlling the refrigerant to circulate in a refrigerant circulation loop formed by the second inlet/outlet of the liquid refrigerant, the working medium pump, the evaporator, the four-way valve, the gaseous refrigerant inlet, the first gaseous refrigerant outlet, the evaporator and the first inlet/outlet of the liquid refrigerant.

Further, the trinity regenerator still includes: and the heating device is arranged at the bottom of the liquid storage device and used for heating the refrigerant in the liquid storage device.

Further, the liquid storage device is also provided with a second gaseous refrigerant outlet; the three-in-one regenerator further comprises: and one end of the second throttling device is connected with the second gaseous refrigerant outlet of the liquid accumulator, and the other end of the second throttling device is connected with a first connecting point arranged on a pipeline between the first gaseous refrigerant outlet and the air suction port of the compressor.

Further, still include: a valve assembly, the valve assembly comprising: one end of the first switch valve is connected with an outlet of the evaporator, and the other end of the first switch valve is connected with an inlet of the condenser; the second switch valve is positioned on a pipeline between the four-way valve and the inlet of the condenser; one end of the third switch valve is connected with a second connection point on a pipeline arranged between the first connection point and the air suction port of the compressor, and the other end of the third switch valve is connected with a third connection point on a pipeline arranged between the four-way valve and the second switch valve; and the fourth switch valve is positioned on the pipeline between the working medium pump and the second inlet/outlet of the liquid refrigerant.

The utility model provides an air conditioning unit, which comprises a three-in-one heat regenerator and a working medium pump, wherein when the ambient temperature is low and the air conditioning unit still needs to provide cold energy for refrigeration, a compressor loop is closed, the working medium pump and the three-in-one heat regenerator are started, and a refrigerant circulation loop consisting of an evaporator, a four-way valve and a condenser is used for realizing refrigerant self-circulation refrigeration, so that the energy consumption is reduced, the problem of energy waste caused by an air conditioner starting refrigeration mode in the low-temperature environment in the prior art is effectively solved, the cold energy of the low-temperature environment can be effectively utilized, and the beneficial effects of saving energy, protecting the environment and improving the energy efficiency are achieved.

Drawings

Fig. 1 is a schematic view of an alternative configuration of an air conditioning assembly according to an embodiment of the present invention;

fig. 2 is an alternative flow chart of an air conditioning unit control method according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the utility model, as detailed in the appended claims.

Example 1

In a preferred embodiment 1 of the present invention, an air conditioning unit is provided, and specifically, fig. 1 shows an alternative structural schematic diagram of the unit, as shown in fig. 1, the unit includes:

the compressor 1, the four-way valve 2, the condenser 3, the first throttling device 4 and the evaporator 5 which are connected in sequence, in addition, the device also comprises:

three-in-one regenerator 6 includes: the liquid storage device 61 is provided with a liquid refrigerant first inlet and outlet 7 and a liquid refrigerant second inlet and outlet 8, and the gas-liquid separator 62 is provided with a gas refrigerant inlet 9 and a first gas refrigerant outlet 10; the outlet of the condenser 3 is connected with a first inlet and outlet 7 of a liquid refrigerant, a second inlet and outlet 8 of the liquid refrigerant is connected with the inlet of the evaporator 5 through a first throttling device 4, the outlet of the evaporator 5 is connected with an inlet 9 of a gaseous refrigerant through a four-way valve 2, and a first gaseous refrigerant outlet 10 is connected with an air suction port of the compressor 1; the first gaseous refrigerant outlet 10 is also connected to the inlet of the condenser 3;

and one end of the working medium pump 12 is connected with the second inlet/outlet 8 of the liquid refrigerant, and the other end of the working medium pump is connected with the inlet of the evaporator 5, and is used for starting in a low-temperature refrigeration mode and controlling the refrigerant to circulate in a refrigerant circulation loop formed by the second inlet/outlet 8 of the liquid refrigerant, the working medium pump 12, the evaporator 5, the four-way valve 2, the gas refrigerant inlet 9, the first gas refrigerant outlet 10, the evaporator 5 and the first inlet/outlet 7 of the liquid refrigerant.

In the above embodiment, an air conditioning unit is provided, including trinity regenerator and working medium pump, it is lower at ambient temperature, and still need the air conditioning unit to provide cold volume when refrigerating, close the compressor loop, start the working pump, realize refrigerant self-loopa refrigeration through the refrigerant circulation circuit that working medium pump and trinity regenerator and evaporimeter, cross valve and condenser are constituteed, reduce the energy consumption, effectively solved the problem that the air conditioner starts the refrigeration mode under the low temperature environment and causes the energy waste among the prior art, can effectively utilize the cold volume of low temperature environment, reach energy-concerving and environment-protective and improve the beneficial effect of efficiency.

The three-in-one heat regenerator 6 has three functions, namely, the function of the middle heat exchanger is realized, and during refrigeration, the refrigerant is supercooled at the outlet of the condenser 3, so that the refrigerating capacity can be improved. When heating, the refrigerant at the air suction port of the compressor 1 is overheated, the return air temperature of the heat pump system can be effectively improved, the heating capacity and the energy efficiency of the heat pump are further improved, the temperature and the pressure of the condensation side of the heat pump system can be reduced, the power consumption of the system is reduced, and the stability of the system is improved; secondly, the gas-liquid separator 62 is used for separating gas and liquid before the inlet of the compressor 1, so as to prevent the liquid impact of the compressor; and thirdly, the function of a liquid storage tank is realized, and redundant liquid refrigerant in the system is stored.

When the existing air conditioning unit needs defrosting in the heating process, a refrigeration cycle needs to be started for defrosting, so that the unit cannot continuously heat, and the comfort level is influenced. In order to realize heating in succession when changing the frost, trinity regenerator 6 still includes in this device: and the heating device 63 is arranged at the bottom of the liquid accumulator 61 and is used for heating the refrigerant in the liquid accumulator 61. The heating device 63 may be an electric heating device 63, or may be another heating form. The accumulator 61 is also provided with a second gaseous refrigerant outlet 11; the three-in-one heat regenerator 6 further comprises: and a second throttling device having one end connected to the second gaseous refrigerant outlet 11 of the accumulator 61 and the other end connected to a first connection point provided on a pipe between the first gaseous refrigerant outlet 10 and the suction port of the compressor 1.

When defrosting, the unit can not stop the inner fan, and continuous heating is realized. The refrigerant is discharged from the compressor 1, and is divided into two paths after passing through the four-way valve 2, and one path of the refrigerant passes through the evaporator 5 and enters the liquid storage device 61 of the three-in-one heat regenerator 6; the other path is defrosted by the condenser 3 and then enters the liquid storage device 61 of the three-in-one heat regenerator 6; the refrigerant mixed in the three-in-one heat regenerator 6 is heated by the heating device 63 and then becomes a gaseous refrigerant, and the refrigerant is throttled by the second throttling device and then is converged with the refrigerant at the outlet of the built-in vapor-liquid separator, and then enters the compressor 1 to complete the circulation. Namely, when defrosting is performed in the heating process, a part of high-temperature and high-pressure exhaust gas of the compressor 1 enters the outdoor heat exchanger (the condenser 3) for defrosting, and a part of high-temperature and high-pressure exhaust gas enters the indoor heat exchanger (the evaporator 5) for heating, so that the indoor air outlet temperature is ensured, continuous heating is realized, and the comfort level of a user is improved.

The refrigerant circulation loop under the different operation modes is realized by matching various valve components. The valve assembly includes: a first switching valve 13 having one end connected to an outlet of the evaporator 5 and the other end connected to an inlet of the condenser 3; a second switching valve 14 located on a pipe between the four-way valve 2 and an inlet of the condenser 3; a third switching valve 15 having one end connected to a second connection point provided on a pipe between the first connection point and the suction port of the compressor 1 and the other end connected to a third connection point provided on a pipe between the four-way valve 2 and the second switching valve 14; and the fourth switch valve 16 is positioned on a pipeline between the working medium pump 12 and the second liquid refrigerant inlet/outlet 8.

The air conditioning unit realizes corresponding functions through switching of the valve according to the working condition of the air conditioning unit. When the ambient temperature is low and the unit is still required to provide cold energy for refrigeration, the compressor loop is closed, the working pump is started, the refrigerant self-circulation refrigeration is realized, and the energy consumption is reduced; when defrosting is carried out in the heating process, the compressor exhausts air at high temperature and high pressure, one part of the air enters the outdoor heat exchanger for defrosting, and the other part of the air enters the indoor heat exchanger for heating, so that the air outlet temperature of the indoor side is ensured, continuous heating is realized, and the comfort level is improved; in the refrigerating cycle, the refrigerant in cold and hot states exchanges energy in the three-in-one heat regenerator, the outlet of the condenser is supercooled, and the air suction port of the evaporator is overheated, so that the system energy is improved.

In a preferred embodiment 1 of the present invention, there is provided an air conditioning unit control method applied to the air conditioning unit in the above-described embodiment. Specifically, fig. 2 shows an alternative flowchart of the method, and as shown in fig. 2, the method includes the following steps S202 to S204:

s202: detecting the operation mode of the air conditioning unit; the operation mode includes at least one of: a refrigeration mode, a low-temperature refrigeration mode, a heating mode and a heating defrosting mode;

s204: and controlling the operation of the compressor, the throttling device, the working medium pump and the valve assembly according to the operation mode.

In the above embodiment, an air conditioning unit is provided, including trinity regenerator and working medium pump, when ambient temperature is lower, and still need the air conditioning unit to provide cold volume refrigeration, close the compressor loop, start the working pump, realize refrigerant self-loopa refrigeration through the refrigerant circulation loop that working medium pump and trinity regenerator and evaporimeter, cross valve and condenser constitute, reduce the energy consumption, effectively solved the problem that the air conditioner starts the refrigeration mode under the low temperature environment and causes the energy waste in the prior art, can effectively utilize the cold volume of low temperature environment, reach energy saving and environmental protection and improve the beneficial effect of efficiency.

When the operation mode comprises a refrigeration mode, controlling the operation of the compressor, the throttling device, the working medium pump and the valve assembly according to the operation mode, wherein the operation mode comprises the following steps: and controlling the compressor to be started, controlling the first throttling device to be started, controlling the second throttling device to be closed, controlling the working medium pump to be closed, and controlling the first electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve to be closed and the second electromagnetic valve to be opened. During refrigeration, the first electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are closed, the first throttling device is opened, the second throttling device is closed, and the refrigerant sequentially passes through the compressor, the four-way valve, the condenser, the first inlet and the second inlet of the liquid refrigerant of the three-in-one heat regenerator, the first throttling device, the evaporator, the four-way valve, the gaseous refrigerant inlet and the gaseous refrigerant outlet of the three-in-one heat regenerator and the compressor to complete circulation;

when the operation mode includes the low temperature refrigeration mode, according to the operation mode control compressor, throttling arrangement, the operation of working medium pump and valve member, include: and controlling the compressor to be closed, controlling the first throttling device and the second throttling device to be closed, controlling the working medium pump to be opened, and controlling the first electromagnetic valve to be closed, and controlling the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve to be opened. When the outdoor environment temperature is lower (such as minus 10 ℃) and refrigeration is still needed, the compressor is closed, the working medium pump is started, the first electromagnetic valve is closed, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are opened, the first throttling device and the second throttling device are closed, the refrigerant sequentially passes through the working medium pump, the evaporator, the four-way valve, the gaseous refrigerant inlet and the gaseous refrigerant outlet of the three-in-one heat regenerator, the third electromagnetic valve, the second electromagnetic valve and the condenser, and the first inlet and the second inlet of the liquid refrigerant and the second inlet and the second outlet of the liquid refrigerant of the three-in-one heat regenerator and the fourth electromagnetic valve are used for completing the circulation. The refrigerant from the gaseous refrigerant outlet of the liquid accumulator is supercooled in the three-in-one heat regenerator and then enters the second throttling device. During normal cooling, the refrigerant may not pass through the flow path. In low-temperature refrigeration, the refrigerant flows through the flow path.

When the operation mode includes the mode of heating, according to the operation mode control compressor, throttling arrangement, working medium pump and the operation of valve member, include: and controlling the compressor to be started, controlling the first throttling device to be started, controlling the second throttling device to be closed, controlling the working medium pump to be closed, controlling the first electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve to be closed, and controlling the second electromagnetic valve to be opened. When heating, the first electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are closed, the second electromagnetic valve and the first throttling device are opened, the second throttling device is closed, the refrigerant sequentially passes through the compressor, the four-way valve, the evaporator, the first throttling device, the second inlet and the second outlet of the liquid refrigerant of the three-in-one heat regenerator, the first inlet and the first outlet of the liquid refrigerant, the condenser, the second electromagnetic valve, the four-way valve and the gaseous refrigerant inlet and the gaseous refrigerant outlet of the three-in-one heat regenerator and the compressor, and circulation is completed.

When the operation mode includes heating defrosting mode, according to the operation mode control compressor, throttling arrangement, working medium pump and the operation of valve module, include: and controlling the compressor to be started, controlling the first throttling device and the second throttling device to be started, controlling the working medium pump to be closed, controlling the first electromagnetic valve to be opened, and controlling the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve to be closed. While controlling the operation of the compressor, the throttle device, the working medium pump and the valve assembly according to the operating mode, the method further comprises the following steps: and controlling the heating device to be started. When defrosting, the unit can not stop the inner fan, and continuous heating is realized. And closing the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve, opening the first electromagnetic valve and opening the heating device at the bottom of the three-in-one heat regenerator. The refrigerant is discharged from the compressor, and is divided into two paths after passing through the four-way valve, one path of the refrigerant passes through the evaporator, and the first throttling device enters an external liquid storage device of the three-in-one heat regenerator through a second inlet and a second outlet of the liquid refrigerant of the three-in-one heat regenerator; the other path of refrigerant enters the condenser for defrosting through a first electromagnetic valve and then enters an external liquid storage device of the three-in-one heat regenerator through a first inlet and a first outlet of the liquid refrigerant of the three-in-one heat regenerator; the mixed refrigerant gas in the three-in-one heat regenerator is throttled by the second throttling device and then is converged with a gaseous refrigerant outlet of the built-in gas-liquid separator, and then the refrigerant gas passes through the compressor to complete circulation. Wherein the liquid refrigerant at the bottom of the three-in-one regenerator is heated by the heating device and then changed into gaseous refrigerant.

According to the air conditioning unit, corresponding functions are realized through switching of the valves according to the working conditions of the air conditioning unit. When the ambient temperature is low and the unit is still required to provide cold energy for refrigeration, the compressor loop is closed, the working pump is started, refrigerant self-circulation refrigeration is realized, and energy consumption is reduced; when defrosting is carried out in the heating process, the compressor is exhausted at high temperature and high pressure, one part of the exhausted air enters the outdoor heat exchanger for defrosting, and the other part of the exhausted air enters the indoor heat exchanger for heating, so that the air outlet temperature of the indoor side is ensured, continuous heating is realized, and the comfort level is improved; in the refrigerating cycle, the refrigerant in cold and hot states exchanges energy in the three-in-one heat regenerator, the outlet of the condenser is supercooled, and the air suction port of the evaporator is overheated, so that the system energy is improved.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. The utility model provides an air conditioning unit, includes compressor (1), cross valve (2), condenser (3), first throttling arrangement (4) and evaporimeter (5) that connect gradually, its characterized in that still includes:

three-in-one regenerator (6) comprising: the refrigerant compressor comprises a liquid storage device (61) and a gas-liquid separator (62) arranged in the liquid storage device, wherein a first liquid refrigerant inlet and outlet (7) and a second liquid refrigerant inlet and outlet (8) are formed in the liquid storage device (61), and a gas refrigerant inlet (9) and a first gas refrigerant outlet (10) are formed in the gas-liquid separator (62); the outlet of the condenser (3) is connected with the first inlet and outlet (7) of the liquid refrigerant, the second inlet and outlet (8) of the liquid refrigerant is connected with the inlet of the evaporator (5) through the first throttling device (4), the outlet of the evaporator (5) is connected with the inlet (9) of the gaseous refrigerant through the four-way valve (2), and the first gaseous refrigerant outlet (10) is connected with the suction port of the compressor (1); the first gaseous refrigerant outlet (10) is also connected to the inlet of the condenser (3);

and one end of the working medium pump (12) is connected with the second liquid refrigerant inlet and outlet (8), the other end of the working medium pump is connected with an inlet of the evaporator (5), and the working medium pump is used for being opened in a low-temperature refrigeration mode and controlling a refrigerant to circulate in a refrigerant circulation loop formed by the second liquid refrigerant inlet and outlet (8), the working medium pump (12), the evaporator (5), the four-way valve (2), the gaseous refrigerant inlet (9), the first gaseous refrigerant outlet (10), the evaporator (5) and the first liquid refrigerant inlet and outlet (7).

2. Air conditioning unit according to claim 1, characterized in that the three-in-one regenerator (6) further comprises:

and the heating device (63) is arranged at the bottom of the liquid accumulator (61) and is used for heating the refrigerant in the liquid accumulator (61).

3. Air conditioning assembly according to claim 1, characterized in that the accumulator (61) is further provided with a second gaseous refrigerant outlet (11);

the three-in-one heat regenerator (6) further comprises: and one end of the second throttling device is connected with a second gaseous refrigerant outlet (11) of the accumulator (61), and the other end of the second throttling device is connected with a first connecting point arranged on a pipeline between the first gaseous refrigerant outlet (10) and a suction port of the compressor (1).

4. The air conditioning assembly as set forth in claim 3, further comprising: a valve assembly, the valve assembly comprising:

and one end of the first switch valve (13) is connected with an outlet of the evaporator (5), and the other end of the first switch valve is connected with an inlet of the condenser (3).

5. The air conditioning assembly as set forth in claim 4, wherein said valve assembly further comprises:

and a second switching valve (14) located on a pipeline between the four-way valve (2) and an inlet of the condenser (3).

6. The air conditioning assembly as set forth in claim 5, wherein said valve assembly further comprises:

and one end of the third switch valve (15) is connected with a second connection point arranged on a pipeline between the first connection point and the air suction port of the compressor (1), and the other end of the third switch valve is connected with a third connection point arranged on a pipeline between the four-way valve (2) and the second switch valve (14).

7. The air conditioning assembly as set forth in claim 4, wherein said valve assembly further comprises:

and the fourth switching valve (16) is positioned on a pipeline between the working medium pump (12) and the second liquid refrigerant inlet/outlet (8).