CN218544697U - Air conditioning system - Google Patents

Abstract

The utility model relates to an air conditioning system, which comprises a compressor; an outdoor heat exchanger; an indoor heat exchanger; an accumulator including a first port and a second port; the first regulating valve is positioned at the downstream of the compressor and is respectively connected with the outdoor heat exchanger, the energy accumulator and the compressor; the second regulating valve is also positioned at the downstream of the compressor and is respectively connected with the compressor, the energy accumulator and the indoor heat exchanger; the first regulating valve and the second regulating valve are configured to regulate the valve positions thereof, so that at least one of the outdoor heat exchanger, the indoor heat exchanger and the accumulator is configured as a condenser, and at least one other is configured as an evaporator; and the accumulator is configured to serve as an evaporator, the first port is a refrigerant inlet end, the second port is a refrigerant outlet end, and serves as a condenser, the second port is a refrigerant inlet end, and the first port is a refrigerant outlet end. The utility model discloses the pipeline sets up simply, and mode is many.

Description

Air conditioning system

Technical Field

The utility model relates to an air conditioner field especially relates to an air conditioning system.

Background

The multi-split air conditioning system has the problems of complex pipeline design, high cost and the like for realizing various modes.

SUMMERY OF THE UTILITY MODEL

Some embodiments of the utility model provide an air conditioning system for alleviate the complicated problem of pipeline.

In an aspect of the present invention, there is provided an air conditioning system, comprising:

a compressor;

an outdoor heat exchanger;

an indoor heat exchanger;

an accumulator including a first port and a second port;

the first regulating valve is positioned at the downstream of the compressor and is respectively connected with the outdoor heat exchanger, the accumulator and the compressor; and

the second regulating valve is also positioned at the downstream of the compressor and is respectively connected with the compressor, the accumulator and the indoor heat exchanger;

wherein the first and second regulating valves are configured to regulate their valve positions such that at least one of the outdoor heat exchanger, the indoor heat exchanger, and the accumulator is configured as a condenser and at least another one is configured as an evaporator; and the accumulator is configured to be in an evaporator state, the first port is a refrigerant inlet end, the second port is a refrigerant outlet end, and the accumulator is configured to be in a condenser state, the second port is a refrigerant inlet end, and the first port is a refrigerant outlet end.

In some embodiments, the air conditioning system further comprises:

one end of the liquid side header pipe is connected with the first port of the energy accumulator and the outdoor heat exchanger respectively; the other end of the indoor heat exchanger is connected with one end of the indoor heat exchanger;

one end of the air side main pipe is connected with the second regulating valve, and the other end of the air side main pipe is connected with the other end of the indoor heat exchanger; and

and one end of the first air pipe is connected with the second port of the energy accumulator, and the other end of the first air pipe is connected with an inlet of the compressor.

In some embodiments, the first regulator valve includes a first port, a second port, a third port, and a fourth port;

the first valve port of the first regulating valve is connected with the outlet of the compressor, the second valve port of the first regulating valve is connected with one end of the outdoor heat exchanger, and the third valve port of the first regulating valve is respectively connected with the first air pipe and the inlet of the compressor; the fourth valve port of the first regulating valve is respectively connected with the first air pipe and the inlet of the compressor through a first throttling element;

when the first regulating valve is positioned at a first valve position, the first valve port and the fourth valve port of the first regulating valve are communicated, and the second valve port and the third valve port of the first regulating valve are communicated;

when the first regulating valve is located at the second valve position, the first valve port and the second valve port of the first regulating valve are communicated, and the third valve port and the fourth valve port of the first regulating valve are communicated.

In some embodiments, the second regulator valve includes a first port, a second port, a third port, and a fourth port;

the first valve port of the second regulating valve is connected with the outlet of the compressor, and the second valve port of the second regulating valve is respectively connected with the first air pipe and the inlet of the compressor through a second throttling element; the third valve port of the second regulating valve is respectively connected with the first air pipe and the inlet of the compressor; the fourth valve port of the second regulating valve is connected with the gas side manifold;

when the second regulating valve is positioned at the first valve position, the first valve port and the fourth valve port of the second regulating valve are communicated, and the second valve port and the third valve port of the second regulating valve are communicated;

when the second regulating valve is located at the second valve position, the first valve port and the second valve port of the second regulating valve are communicated, and the third valve port and the fourth valve port of the second regulating valve are communicated.

In some embodiments, the air conditioning system further comprises:

a first subcooler comprising a first flow path and a second flow path; the first flow path is connected with the liquid side header pipe and the outdoor heat exchanger, and the second flow path is respectively connected with the first regulating valve, the second regulating valve, the first air pipe and an inlet of the compressor.

In some embodiments, the air conditioning system further comprises:

and the outdoor expansion valve is arranged on a flow path connecting the first flow path and the outdoor heat exchanger.

In some embodiments, the air conditioning system further comprises:

and a subcooling expansion valve connecting the first flow path and the second flow path.

In some embodiments, the air conditioning system further comprises:

the first port of the energy accumulator is connected with the liquid side main pipe through the first liquid pipe and the third liquid pipe respectively; and

the bypass valve is arranged on the liquid side main pipe and is positioned between the second end of the first liquid pipe and the joint of the liquid side main pipe and the second end of the third liquid pipe and the joint of the liquid side main pipe.

In some embodiments, the air conditioning system further comprises an energy storage expansion valve and a cold accumulation one-way valve which are arranged on the first liquid pipe, wherein an inlet of the cold accumulation one-way valve is connected with the liquid side main pipe, and an outlet of the cold accumulation one-way valve is connected with the energy storage expansion valve.

In some embodiments, the air conditioning system further comprises a cold release check valve disposed in the third liquid pipe, and an inlet of the cold release check valve is connected to the first port of the accumulator.

In some embodiments, the air conditioning system further comprises:

the first end of the second air pipe is connected with the air side main pipe, the second end of the second air pipe is connected with the first liquid pipe, and the joint of the second end of the second air pipe and the first liquid pipe is positioned between the energy storage expansion valve and the cold accumulation one-way valve;

and the high-pressure air valve is arranged on the second air pipe.

In some embodiments, the air conditioning system further comprises:

the first end of the second air pipe is connected with the outlet of the compressor, the second end of the second air pipe is connected with the first liquid pipe, and the joint of the second end of the second air pipe and the first liquid pipe is positioned between the energy storage expansion valve and the cold accumulation one-way valve;

and the high-pressure air valve is arranged on the second air pipe.

In some embodiments, the air conditioning system further comprises:

the first end of the first liquid pipe is connected with the first liquid pipe, the second end of the first liquid pipe is connected with the second port of the energy accumulator, and the joint of the first end of the first liquid pipe and the first liquid pipe is positioned between the joint of the second end of the first liquid pipe and the second gas pipe and the cold accumulation one-way valve;

and the cold release valve is arranged on the second liquid pipe.

In some embodiments, the air conditioning system further comprises a storage vessel, a liquid inlet valve, a pressurization valve, a liquid outlet valve, a gas balancing valve, and two third restrictions; the storage container is provided with a first interface, a second interface and a third interface;

a first interface of the storage container is connected with the liquid side main pipe, and the joint of the first interface and the liquid side main pipe is positioned between the bypass valve and the outdoor heat exchanger; the liquid inlet valve is arranged on a pipeline connecting the first connector and the liquid side main pipe;

the second interface of the storage container is connected with the second air pipe; the pressurizing valve is arranged on a pipeline connecting the second interface and the second air pipe;

the second interface of the storage container is also connected with the first air pipe; the air balance valve is arranged on a pipeline connecting the second connector and the first air pipe;

the third interface of the storage container is connected with the first air pipe; the drain valve is arranged on a pipeline connecting the third interface with the first gas pipe;

wherein a junction of the third port and the first gas pipe is close to an inlet of the compressor relative to a junction of the second port and the first gas pipe;

the two third throttling pieces are respectively arranged on a pipeline connected with the third interface and the first air pipe, and a pipeline connected with the second interface and the first air pipe.

In some embodiments, the air conditioning system further comprises a storage vessel, a drain valve, an air balancing valve, and a third throttling element; the storage container has a first interface and a second interface;

a first interface of the storage container is connected with the liquid side main pipe, and the joint of the first interface and the liquid side main pipe is positioned between the bypass valve and the outdoor heat exchanger; the gas balance valve is arranged on a pipeline connecting the first connector and the liquid side main pipe;

the second interface of the storage container is connected with the first air pipe; the drain valve is arranged on a pipeline connecting the second interface and the first air pipe;

the third throttling element is arranged on a pipeline connecting the second interface and the first air pipe.

In some embodiments, the air conditioning system further comprises:

a heat release valve through which a second port of the accumulator is connected with the first gas pipe.

In some embodiments, the air conditioning system further comprises a liquid separator disposed at the first port of the accumulator.

Based on the technical scheme, the utility model discloses following beneficial effect has at least:

in some embodiments, the energy accumulator for bidirectional refrigerant inlet is combined with the first regulating valve and the second regulating valve, so that the function of continuously heating and defrosting can be realized; and the energy accumulator with the two-way refrigerant inlet can not only be beneficial to ensuring the uniform liquid separation when the liquid refrigerant enters the energy accumulator, but also reduce the pressure loss when the gaseous refrigerant enters the energy accumulator. The energy storage ware can be at off-peak electricity price time interval deposit energy, and the power consumption at this moment of the system is reduced to release energy when the peak electricity price, heats in succession when realizing changing the frost, widens energy storage system's application range to a great extent, increases the indoor travelling comfort when changing the frost, and its function is very abundant, can satisfy user's diversified user demand.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a schematic diagram of an air conditioning system provided in accordance with some embodiments of the present invention.

Fig. 2 is a schematic diagram of refrigerant flow in a first operating mode of an air conditioning system according to some embodiments of the present invention.

Fig. 3 is a schematic diagram of refrigerant flow in a second operating mode of the air conditioning system according to some embodiments of the present invention.

Fig. 4 is a schematic diagram of refrigerant flow in a third operating mode of the air conditioning system according to some embodiments of the present invention.

Fig. 5 is a schematic diagram illustrating a refrigerant flow in a fourth operating mode of the air conditioning system according to some embodiments of the present invention.

Fig. 6 is a schematic diagram of refrigerant flowing in a fifth operating mode of the air conditioning system according to some embodiments of the present invention.

Fig. 7 is a schematic diagram illustrating a flow of refrigerant in a sixth operating mode of an air conditioning system according to some embodiments of the present invention.

Fig. 8 is a schematic diagram illustrating a refrigerant flow in a seventh operating mode of the air conditioning system according to some embodiments of the present invention.

Fig. 9 is a schematic diagram of refrigerant flowing in an eighth operating mode of the air conditioning system according to some embodiments of the present invention.

Fig. 10 is a schematic diagram illustrating a flow of refrigerant in a ninth operating mode of the air conditioning system according to some embodiments of the present invention.

Fig. 11 is a schematic diagram illustrating a flow of refrigerant in a tenth operating mode of the air conditioning system according to some embodiments of the present invention.

Fig. 12 is a schematic refrigerant flow diagram illustrating an eleventh operating mode of an air conditioning system according to some embodiments of the present invention.

Fig. 13 is a schematic diagram illustrating a flow of refrigerant in a twelfth operating mode of the air conditioning system according to some embodiments of the present invention.

Fig. 14 is a schematic diagram illustrating a flow of refrigerant in a thirteenth operating mode of the air conditioning system according to some embodiments of the present invention.

Fig. 15 is a schematic view of an air conditioning system according to further embodiments of the present invention.

Fig. 16 is a schematic diagram of a storage container in an air conditioning system according to some embodiments of the present invention.

Fig. 17 is a schematic view illustrating a flow of a refrigerant in a state where the storage container stores the refrigerant according to some embodiments of the present invention.

Fig. 18 is a schematic view illustrating a flow of refrigerant in a state where the storage container releases the refrigerant according to some embodiments of the present invention.

Fig. 19 is a schematic view of an air conditioning system provided with a storage container according to other embodiments of the present invention.

Fig. 20 is a schematic view illustrating a flow of a refrigerant in a state where the storage container stores the refrigerant according to another embodiment of the present invention.

Fig. 21 is a schematic view illustrating a flow of a refrigerant in a state where the refrigerant is discharged from the storage container according to another embodiment of the present invention.

Description of the reference numerals:

1-an outer machine part; 2-an energy storage part; 3-liquid side main pipe; 4-gas side manifold;

101-a compressor; 102-a first regulating valve; 103-a second regulating valve; 104-outdoor heat exchanger; 105-an outdoor expansion valve; 106-a subcooling expansion valve; 107-a subcooler; 108-a gas-liquid separator;

201-an accumulator; 201 a-a first port; 201 b-a second port; 202-a second trachea; 203-a first trachea; 204-a first liquid tube; 205-a second liquid tube; 206-an energy storage expansion valve; 207-cold accumulation one-way valve; 208-a high-pressure gas valve; 209-a cold release check valve; 210-a heat release valve; 211-a bypass valve; 212-a cool release valve; 213-a third liquid tube; 214-a liquid separator;

220-a storage container; 220 a-first interface; 220b — a second interface; 220 c-a third interface; 220a' -a first interface; 220c' -a second interface; 221-a liquid inlet valve; 222-a pressurization valve; 223-drain valve; 224-gas balance valve; 225-a third throttling element;

7-indoor heat exchanger.

It should be understood that the dimensions of the various parts shown in the figures are not drawn to scale. Further, the same or similar reference numerals denote the same or similar components.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the invention, its application, or uses. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word comprises the element listed after the word, and does not exclude the possibility that other elements may also be included.

Fig. 1 is a schematic diagram of some embodiments of an air conditioning system according to the present invention. Referring to fig. 1, in some embodiments, an air conditioning system includes a compressor 101, an outdoor heat exchanger 104, an indoor heat exchanger 7, an accumulator 201, a first regulating valve 102, and a second regulating valve 103.

The accumulator 201 includes a first port 201a and a second port 201b.

The first regulating valve 102 is located downstream of the compressor 101, and the first regulating valve 102 is connected to the compressor 101, the outdoor heat exchanger 104, and the accumulator 201, respectively.

The second regulator valve 103 is also located downstream of the compressor 101, and the second regulator valve 103 is connected to the compressor 101, the accumulator 201, and the indoor heat exchanger 7, respectively.

Wherein the first regulating valve 102 and the second regulating valve 103 are configured to regulate their valve positions such that at least one of the outdoor heat exchanger 104, the indoor heat exchanger 7, and the accumulator 201 is configured as a condenser and at least another one is configured as an evaporator. The accumulator 201 is configured such that the first port 201a is a refrigerant inlet end and the second port 201b is a refrigerant outlet end in an evaporator state, and the accumulator 201 is configured such that the second port 201b is a refrigerant inlet end and the first port 201a is a refrigerant outlet end in a condenser state.

The accumulator 201 is also configured such that, in the subcooler state, the second port 201b is a refrigerant inlet end and the first port 201a is a refrigerant outlet end.

The accumulator 201 is located between the outdoor heat exchanger 104 and the indoor heat exchanger 7.

In the embodiment of the present invention, the energy accumulator 201 is filled with energy storage materials, such as organic phase change materials such as ice water and paraffin, and inorganic phase change materials such as mirabilite. The accumulator 201 is provided with a refrigerant pipeline, and the refrigerant flows in the pipeline and fully exchanges heat with the energy storage material, so that the cold and heat can be stored and released.

The embodiment of the present invention provides an energy accumulator 201 can enter the refrigerant in two directions, under the state of energy accumulator 201 as the evaporator, the first port 201a is the refrigerant entering end, the second port 201b is the refrigerant outflow end, under the state of energy accumulator 201 as the condenser, the second port 201b is the refrigerant entering end, the first port 201a is the refrigerant outflow end, namely in the cold accumulation and the cold release process, the flow direction of the refrigerant in energy accumulator 201 is opposite.

During cold accumulation, the temperature of the refrigerant gradually rises along the flow path, so that the temperature of the energy storage material in the energy storage 201 is distributed from low to high when the cold accumulation is finished. When the refrigerant is cooled, the high temperature refrigerant flows into the accumulator 201 from the other end, and the flow direction is reversed. At the moment, along with the heat exchange with the energy storage material with the temperature distribution from high to low, the heat exchange (counter-flow heat exchange) can be more sufficient, the temperature of the obtained refrigerant is lower, and the effect is better.

And in the embodiment provided by the utility model, the energy storage 201 through two-way refrigerant that advances combines to use first governing valve 102 and second governing valve 103, can realize the function of the defrosting that heats in succession. And the energy accumulator 201 with two-way refrigerant inlet can not only be beneficial to ensuring uniform liquid separation when liquid refrigerant enters the energy accumulator 201, but also reduce pressure loss when gaseous refrigerant enters the energy accumulator 201.

In some embodiments, the air conditioning system further includes a liquid distributor 214, and the liquid distributor 214 is disposed at the first port 201a of the accumulator 201.

Optionally, the dispenser 214 includes a capillary tube therein.

The accumulator 214 is disposed at the first port 201a of the accumulator 201, and the refrigerant can be uniformly distributed to each circulation pipeline of the accumulator 201 by the accumulator 214, so that the flow loss of the refrigerant in the flow process is reduced.

The liquid refrigerant enters the accumulator 201 from the first port 201a of the accumulator 201 through the liquid separator 214, so that a uniform liquid separation effect of the liquid refrigerant can be ensured, and the gaseous refrigerant enters the accumulator 201 from the second port 201b of the accumulator 201, so that the pressure loss of the gaseous refrigerant entering the accumulator 201 can be reduced.

The embodiment of the utility model provides an in, when being in the cold volume state of deposit with energy storage 201, the flow direction of refrigerant in energy storage 201, when being in the cold volume state of release with energy storage 201, the flow direction of refrigerant in energy storage 201 sets up to opposite, it is also a beneficial effect, no matter at the cold volume state of deposit or at the cold volume state of release, can make liquid refrigerant all come in and go out from one of them port of energy storage 201, and gaseous state refrigerant then all comes in and goes out from another port of energy storage 201, avoid same port to come in and go out liquid refrigerant sometimes, come in and go out gaseous state refrigerant sometimes again. Thus, a liquid separator can be arranged at the inlet and outlet of the liquid refrigerant, and the liquid separator can not increase the pressure loss of the refrigerant flow because of the gas refrigerant inlet and outlet.

In addition, when the defrosting is continuously heated, the energy accumulator 201 bears all evaporation loads due to the simultaneous condensation of the inner machine and the outer machine, and the loads are large; moreover, the demand of defrosting often requires to be rapid and short-term, the energy storage expansion valve 206 can be rapidly opened due to the increase of the amount of the refrigerant which needs to enter the energy accumulator 201 for evaporation, so that the throttling effect is insufficient, the evaporation temperature is too high, and the capillary tube is arranged in the liquid separator 214, so that the throttling effect can be complemented, and the refrigerant is ensured to enter the energy accumulator 201 for evaporation after being fully throttled.

The inner unit here is an inner unit portion including the indoor heat exchanger 7, and the outer unit is an outer unit portion 1 including the outdoor heat exchanger 104.

The number of the indoor heat exchangers 7 is one, two or more. In some embodiments, the air conditioning system further includes a liquid-side manifold 3, and one end of the liquid-side manifold 3 is connected to the first port 201a of the accumulator 201 and the outdoor heat exchanger 104, respectively; the other end of the liquid side header pipe 3 is connected with one end of an indoor heat exchanger 7.

In some embodiments, the air conditioning system further includes a gas-side manifold 4, one end of the gas-side manifold 4 is connected to the second regulating valve 103, and the other end of the gas-side manifold 4 is connected to the other end of the indoor heat exchanger 7.

In some embodiments, the air conditioning system further comprises a first air pipe 203, one end of the first air pipe 203 is connected with the second port 201b of the accumulator 201; the other end of the first air pipe 203 is connected to an inlet of the compressor 101.

In some embodiments, the first regulator valve 102 includes a first port D, a second port C, a third port S, and a fourth port E.

A first valve port D of the first regulating valve 102 is connected with an outlet of the compressor 101, a second valve port C of the first regulating valve 102 is connected with one end of the outdoor heat exchanger 104, and a third valve port S of the first regulating valve 102 is respectively connected with the first gas pipe 203 and an inlet of the compressor 101; the fourth port E of the first regulating valve 102 is connected to the first air pipe 203 and the inlet of the compressor 101 through the first throttle.

When the first regulator valve 102 is in the first position, the first port D and the fourth port E of the first regulator valve 102 are communicated, and the second port C and the third port S of the first regulator valve 102 are communicated.

When the first regulator valve 102 is in the second position, the first port D and the second port C of the first regulator valve 102 are communicated, and the third port S and the fourth port E of the first regulator valve 102 are communicated.

The first regulator valve 102 is energized at the first position and de-energized at the second position, or the first regulator valve 102 is de-energized at the first position and energized at the second position.

Optionally, first regulator valve 102 comprises a four-way valve.

Optionally, the first restriction comprises a capillary tube.

In some embodiments, the second regulator valve 103 includes a first port D, a second port C, a third port S, and a fourth port E.

A first valve port D of the second regulating valve 103 is connected with an outlet of the compressor 101, and a second valve port C of the second regulating valve 103 is respectively connected with the first air pipe 203 and an inlet of the compressor 101 through a second throttling element; the third valve port S of the second regulating valve 103 is connected to the first air pipe 203 and the inlet of the compressor 101 respectively; the fourth port E of the second regulator valve 103 is connected to the gas-side manifold 4.

When the second regulating valve 103 is in the first position, the first port D and the fourth port E of the second regulating valve 103 are communicated, and the second port C and the third port S of the second regulating valve 103 are communicated.

When the second regulator valve 103 is in the second position, the first port D and the second port C of the second regulator valve 103 are communicated, and the third port S and the fourth port E of the second regulator valve 103 are communicated.

The second regulating valve 103 is powered on and positioned at the first valve position, and the second regulating valve 103 is powered off and positioned at the second valve position, or the second regulating valve 103 is powered off and positioned at the first valve position, and the second regulating valve 103 is powered on and positioned at the second valve position.

Optionally, second regulator valve 103 comprises a four-way valve.

Optionally, the second restriction comprises a capillary tube.

In some embodiments, the air conditioning system further includes an outdoor expansion valve 105, and the outdoor expansion valve 105 is provided on a pipe connecting the liquid-side header pipe 3 and the outdoor heat exchanger 104.

The outdoor expansion valve 105 is opened, the pipeline between the liquid side header pipe 3 and the outdoor heat exchanger 104 is communicated, the outdoor expansion valve 105 is closed, and the pipeline between the liquid side header pipe 3 and the outdoor heat exchanger 104 is disconnected.

Optionally, the outdoor expansion valve 105 comprises an electronic expansion valve.

In some embodiments, the air conditioning system further comprises a first subcooler 107, the first subcooler 107 comprising a first flow path and a second flow path; the first flow path connects the liquid-side header 3 and the outdoor heat exchanger 104, and the second flow path connects the first regulator valve 102, the second regulator valve 103, the first gas pipe 203, and the inlet of the compressor 101, respectively.

The refrigerant in the liquid-side header pipe 3 may flow into the outdoor heat exchanger 104 through the first flow path of the first subcooler 107. Alternatively, the refrigerant passing through the outdoor heat exchanger 104 may flow into the liquid-side header pipe 3 through the first flow path of the first subcooler 107.

In some embodiments, the outdoor expansion valve 105 is disposed on the flow path where the first flow path connects with the outdoor heat exchanger 104.

The refrigerant in the liquid-side header pipe 3 can flow into the outdoor heat exchanger 104 through the first flow path of the first subcooler 107 and the outdoor expansion valve 105 in this order. Alternatively, the refrigerant passing through the outdoor heat exchanger 104 may sequentially flow through the outdoor expansion valve 105 and the first flow path of the first subcooler 107 into the liquid-side header pipe 3.

In some embodiments, the air conditioning system further comprises a subcooling expansion valve 106, the subcooling expansion valve 106 connecting the first flow path and the second flow path.

The subcooling expansion valve 106 is opened, the first flow path and the second flow path are communicated, the subcooling expansion valve 106 is closed, and the first flow path and the second flow path are disconnected.

Optionally, the subcooling expansion valve 106 comprises an electronic expansion valve.

In some embodiments, the air conditioning system further comprises a first liquid pipe 204 and a third liquid pipe 213, the first port 201a of the accumulator 201 is connected to the liquid side manifold 3 through the first liquid pipe 204, and the first port 201a of the accumulator 201 is also connected to the liquid side manifold 3 through the third liquid pipe 213.

In some embodiments, the air conditioning system further comprises a bypass valve 211, wherein the bypass valve 211 is disposed in the liquid side manifold 3 and located between a connection between the second end of the first liquid pipe 204 and the liquid side manifold 3 and a connection between the second end of the third liquid pipe 213 and the liquid side manifold 3.

The bypass valve 211 is opened and the liquid side manifold 3 is communicated between the junction of the second end of the first liquid pipe 204 and the liquid side manifold 3 and the junction of the second end of the third liquid pipe 213 and the liquid side manifold 3. The bypass valve 211 is closed and the liquid side manifold 3 between the connection of the second end of the first liquid pipe 204 and the liquid side manifold 3 and the connection of the second end of the third liquid pipe 213 and the liquid side manifold 3 is disconnected.

In some embodiments, the air conditioning system further includes an accumulator expansion valve 206 disposed in the first liquid pipe 204.

The energy storage expansion valve 206 is opened, and the first liquid pipe 204 is communicated with the pipeline between the first port 201a of the energy accumulator 201; the accumulator expansion valve 206 is closed and the line between the first liquid pipe 204 and the first port 201a of the accumulator 201 is disconnected.

Optionally, the accumulator expansion valve 206 comprises an electronic expansion valve.

In some embodiments, the air conditioning system further comprises a cold accumulation one-way valve 207 disposed on the first liquid pipe 204, an inlet of the cold accumulation one-way valve 207 is connected to the liquid side manifold 3, and an outlet of the cold accumulation one-way valve 207 is connected to the energy storage expansion valve 206. The refrigerant flows in the direction from the inlet to the outlet of the cold accumulation check valve 207.

In some embodiments, the air conditioning system further includes a cooling check valve 209 disposed at the third liquid pipe 213, and an inlet of the cooling check valve 209 is connected to the first port 201a of the accumulator 201. The refrigerant flows in the direction from the inlet to the outlet of the refrigerant release check valve 209.

Referring to fig. 1, in some embodiments, the air conditioning system further includes a second gas pipe 202, a first end of the second gas pipe 202 is connected to an outlet of the compressor 101, a second end of the second gas pipe 202 is connected to the first liquid pipe 204, and a connection of the second end of the second gas pipe 202 and the first liquid pipe 204 is located between the energy storage expansion valve 206 and the cold accumulation check valve 207.

In some embodiments, the air conditioning system further comprises a high pressure gas valve 208, and the high pressure gas valve 208 is disposed in the second gas pipe 202.

The high-pressure air valve 208 is opened, the second air pipe 202 is communicated, the high-pressure air pipe 208 is closed, and the second air pipe 202 is disconnected.

Referring to fig. 15, in other embodiments, the air conditioning system further includes a second air pipe 202, a first end of the second air pipe 202 is connected to the air-side manifold 4, a second end of the second air pipe 202 is connected to the first liquid pipe 204, and a connection point of the second end of the second air pipe 202 and the first liquid pipe 204 is located between the energy storage expansion valve 206 and the cold accumulation check valve 207.

In other embodiments, the air conditioning system further comprises a high pressure gas valve 208, and the high pressure gas valve 208 is disposed in the second gas pipe 202.

The high-pressure air valve 208 is opened, the second air pipe 202 is communicated, the high-pressure air pipe 208 is closed, and the second air pipe 202 is disconnected.

Referring to fig. 1, in some embodiments, the air conditioning system further includes a second liquid pipe 205, a first end of the second liquid pipe 205 is connected to the first liquid pipe, a second end of the second liquid pipe 205 is connected to the second port 201b of the accumulator 201, and a connection of the first end of the second liquid pipe 205 and the first liquid pipe is located between a connection of the second end of the second gas pipe 202 and the first liquid pipe 204, and the cold accumulation check valve 207.

In some embodiments, the air conditioning system further comprises a cooling release valve 212, and the cooling release valve 212 is disposed in the second liquid pipe 205.

The cooling relief valve 212 is opened, the second liquid pipe 205 is connected, the cooling relief valve 212 is closed, and the second liquid pipe 205 is disconnected.

Referring to fig. 1, in some embodiments, the air conditioning system further includes a heat release valve 210, and the second port 201b of the accumulator 201 is connected to the first air pipe 203 through the heat release valve 210. The heat release valve 210 is opened, the line between the second port 201b of the accumulator 201 and the first gas pipe 203 is communicated, the heat release valve 210 is closed, and the line between the second port 201b of the accumulator 201 and the first gas pipe 203 is disconnected.

Referring to fig. 16-18, in some embodiments, the air conditioning system further includes a storage container 220.

In some embodiments, the storage container 220 has a first interface 220a. The first connection port 220a of the storage tank 220 is connected to the liquid-side manifold 3, and the connection point of the first connection port 220a to the liquid-side manifold 3 is located between the bypass valve 211 and the outdoor heat exchanger 104. Further, the connection point of the first port 220a and the liquid side manifold 3 is located between the connection point of the first liquid pipe and the liquid side manifold 3 and the outdoor heat exchanger 104.

In some embodiments, the air conditioning system further includes a liquid inlet valve 221, and the liquid inlet valve 221 is disposed on a pipe connecting the first port 220a and the liquid-side manifold 3.

The liquid inlet valve 221 is opened, the first port 220a is communicated with the pipeline between the liquid side manifold 3, the liquid inlet valve 221 is closed, and the pipeline between the first port 220a and the liquid side manifold 3 is disconnected.

In some embodiments, the storage container 220 also has a second interface 220b. The second port 220b of the storage container 220 is connected to the second air pipe 202.

In some embodiments, the air conditioning system further comprises a pressurizing valve 222, and the pressurizing valve 222 is disposed on a pipeline connecting the second port 220b and the second air pipe 202.

The pressurizing valve 222 is opened, the pipe between the second port 220b and the second air pipe 202 is communicated, the pressurizing valve 222 is closed, and the pipe between the second port 220b and the second air pipe 202 is disconnected.

In some embodiments, the storage container 220 also has a second interface 220b. The second port 220b of the storage container 220 is also connected to the first air pipe 203.

In some embodiments, the air conditioning system further comprises an air balance valve 224, and the air balance valve 224 is disposed on a pipeline connecting the second port 220b and the first air pipe 203.

The air balance valve 224 is opened, the pipeline between the second port 220b and the first air pipe 203 is communicated, the air balance valve 224 is closed, and the pipeline between the second port 220b and the first air pipe 203 is disconnected.

In some embodiments, the storage container 220 also has a third interface 220c. The third port 220c of the storage container 220 is connected to the first air pipe 203.

In some embodiments, the air conditioning system further comprises a drain valve 223, and the drain valve 223 is disposed on a pipeline connecting the third port 220c and the first air pipe 203.

The drain valve 223 is opened, and the third port 220c is communicated with the pipeline between the first air pipe 203; the drain valve 223 is closed and the line between the third port 220c and the first air line 203 is disconnected.

Wherein the connection of the third port 220c and the first air pipe 203 is close to the inlet of the compressor 101 relative to the connection of the second port 220b and the first air pipe 203.

In some embodiments, the air conditioning system further comprises two third dampers 225. Two third throttling members 225 are respectively provided on the pipeline where the third port 220c is connected to the first air pipe 203, and the pipeline where the second port 220b is connected to the first air pipe 203.

Optionally, the third fluidic piece 225 comprises a capillary tube.

Referring to fig. 19-21, in further embodiments, the air conditioning system further includes a storage container 220.

The storage container 220 has a first connection port 220a ', the first connection port 220a ' of the storage container 220 is connected to the liquid-side manifold 3, and a connection point of the first connection port 220a ' to the liquid-side manifold 3 is located between the bypass valve 211 and the outdoor heat exchanger 104. Further, the connection of the first port 220a' and the liquid side manifold 3 is located between the connection of the first liquid pipe and the liquid side manifold 3 and the outdoor heat exchanger 104.

In some embodiments, the air conditioning system further comprises an air balance valve 224, and the air balance valve 224 is disposed on a line connecting the first port 220a' and the liquid side manifold 3.

The air balance valve 224 is opened, the first port 220a 'communicates with the pipe between the liquid side manifold 3, the air balance valve 224 is closed, and the pipe between the first port 220a' and the liquid side manifold 3 is disconnected.

In some embodiments, the storage container 220 also has a second interface 220c'. The second port 220c' of the storage container 220 is connected to the first air pipe 203.

In some embodiments, the air conditioning system further includes a drain valve 223. The drain valve 223 is provided on a line connecting the second port 220c' and the first gas pipe 203.

The drain valve 223 is opened, and the second port 220c' is communicated with the pipeline between the first air pipe 203; the drain valve 223 is closed and the conduit between the second port 220c' and the first gas line 203 is disconnected.

In some embodiments, the air conditioning system further comprises a third throttle 225. The third throttling member 225 is provided on a line connecting the second port 220c' with the first air pipe 203.

Optionally, the third fluidic piece 225 comprises a capillary tube.

In some embodiments, the air conditioning system further includes a gas-liquid separator 108, the gas-liquid separator 108 is disposed at an inlet of the compressor 101, and the refrigerant enters the inlet of the compressor after passing through the gas-liquid separator 108.

Alternatively, the refrigerant entering the compressor 101 needs to pass through the gas-liquid separator 108 and then enter the compressor 101 from the inlet of the compressor 101.

The embodiment of the utility model provides an air conditioning system is through simple pipeline design, and integrated multiple functions has widened the use scene of energy storage, can realize the value of energy storage more fully, makes energy storage 201 can be at off-peak electricity price period deposit energy, and the release energy when the peak electricity price reduces the power consumption of air conditioning system this moment.

Optionally, an instruction is preset in the air conditioning system, the air conditioning system is instructed to switch the working mode through the instruction, and the change curve of the electricity price is already set in the instruction as a known mode switching condition.

Some embodiments also provide a control method of an air conditioning system, the control method including:

determining the working mode of the air conditioning system;

and controlling the states of the outdoor heat exchanger 104, the indoor heat exchanger 7, the accumulator 201, the first regulating valve 102 and the second regulating valve 103 in the air conditioning system according to a preset control strategy corresponding to the working mode.

In some embodiments, determining an operating mode of the air conditioning system comprises:

in a period when the power supply system is at a high price of electricity, determining that the working mode of the air conditioning system is that the corresponding energy accumulator 201 is: a non-operating state, a state of releasing cold or a state of releasing heat;

in a period when the power supply system is at a low price, it is determined that the working mode of the air conditioning system is a mode corresponding to the state where the energy accumulator 201 is in a non-working state, a state of storing cold or a state of storing heat.

The embodiment of the utility model provides an air conditioning system operation mode is many, can be applicable to different periods, alleviates air conditioner power consumption and mismatch with the time of use price policy, causes the uneconomic problem of operation.

The embodiment of the utility model provides an air conditioning system carries out the energy storage in the time slot of low ebb price, releases energy in the time slot of peak price to reduce air conditioning system's consumption this moment, realize that "the peak clipping of electric power fills in the millet", reduce the running cost of air conditioner.

The embodiment of the utility model provides an air conditioning system passes through the switching of pipeline, valve member, can make heat pump air conditioning system realize conventional refrigeration, complete cold-storage, cold-storage simultaneous cooling, supercooling cold release, condensation cold release, parallelly connected cold release, conventional heating, complete heat storage, heat while heating and hold heat, mix the thirteen kinds of functions such as heat release, independent heat release, the discontinuous defrosting that heats, the continuous defrosting that heats, has widened energy storage system's application range, has improved energy storage system's availability ratio; the problems that the energy storage air conditioner is single in function (can only be used for defrosting), continuous heating cannot be realized during defrosting, and available time periods are short are solved.

Thirteen operating modes of the air conditioning system are described below, respectively.

In some embodiments, the operating modes of the air conditioning system include a first operating mode-a conventional cooling mode; in the normal refrigeration mode, the first regulating valve 102 is located at the second valve position, the second regulating valve 103 is located at the second valve position, and the accumulator 201 is in a non-working state; the outdoor heat exchanger 104 serves as a condenser, and the indoor heat exchanger 7 serves as an evaporator.

In some embodiments, the operating modes of the air conditioning system include a second operating mode-a full cold storage mode; in the full cold storage mode, the first regulation valve 102 is located at the second valve position, the second regulation valve 103 is located at the second valve position, the indoor heat exchanger 7 is not operated, the outdoor heat exchanger 104 is used as a condenser, and the accumulator 201 is used as an evaporator.

In some embodiments, the operating modes of the air conditioning system include a third operating mode-a cold storage simultaneous cooling mode; in the cold storage simultaneous cooling mode, the first regulating valve 102 is located at the second valve position, the second regulating valve 103 is located at the second valve position, the outdoor heat exchanger 104 is used as a condenser, the accumulator 201 is used as an evaporator, and the indoor heat exchanger 7 is also used as an evaporator.

In some embodiments, the operating modes of the air conditioning system include a fourth operating mode, a sub-cool and a cold release mode; in the supercooling cold release mode, the first regulating valve 102 is located at the second valve position, the second regulating valve 103 is located at the second valve position, the outdoor heat exchanger 104 is used as a condenser, the accumulator 201 is used as a supercooler, and the indoor heat exchanger 7 is used as an evaporator.

In some embodiments, the operating modes of the air conditioning system include a fifth operating mode-a condensing and cooling mode; in the condensing and cooling mode, the first regulating valve 102 is located at the first valve position, the second regulating valve 103 is located at the second valve position, the outdoor heat exchanger 104 is not operated, the accumulator 201 is used as a condenser, and the indoor heat exchanger 7 is used as an evaporator.

In some embodiments, the operating modes of the air conditioning system include a sixth operating mode-a parallel cooling mode; in the parallel cooling mode, the first regulating valve 102 is located at the second position, the second regulating valve 103 is located at the second position, the outdoor heat exchanger 104 is used as a condenser, the accumulator 201 is used as a condenser, and the indoor heat exchanger 7 is used as an evaporator.

In some embodiments, the operating modes of the air conditioning system include a seventh operating mode-a regular heating mode; in the normal heating mode, the first regulating valve 102 is located at the first valve position, the second regulating valve 103 is located at the first valve position, the outdoor heat exchanger 104 is used as an evaporator, the accumulator 201 is not operated, and the indoor heat exchanger 7 is used as a condenser.

In some embodiments, the operating modes of the air conditioning system include an eighth operating mode, a full heat storage mode; in the full heat storage mode, the first regulating valve 102 is located at the first valve position, the second regulating valve 103 is located at the second valve position, the outdoor heat exchanger 104 is operated as an evaporator, the accumulator 201 is operated as a condenser, and the indoor heat exchanger 7 is not operated.

In some embodiments, the operating modes of the air conditioning system include a nine operating mode-a heat storage while heating mode; in the heat accumulation simultaneous heating mode, the first regulating valve 102 is located at the first valve position, the second regulating valve 103 is located at the first valve position, the outdoor heat exchanger 104 is used as an evaporator, the accumulator 201 is used as a condenser, and the indoor heat exchanger 7 is used as a condenser.

In some embodiments, the operating modes of the air conditioning system include a tenth operating mode-a hybrid heat rejection mode; in the mixed heat release mode, the first regulating valve 102 is located at the first valve position, the second regulating valve 103 is located at the first valve position, the outdoor heat exchanger 104 is used as an evaporator, the accumulator 201 is used as an evaporator, and the indoor heat exchanger 7 is used as a condenser.

In some embodiments, the operating modes of the air conditioning system include an eleventh operating mode-an independent heat release mode; in the independent heat release mode, the first regulating valve 102 is located at the first valve position, the second regulating valve 103 is located at the first valve position, the outdoor heat exchanger 104 is not operated, the accumulator 201 is used as an evaporator, and the indoor heat exchanger 7 is used as a condenser.

In some embodiments, the operating modes of the air conditioning system include a twelfth operating mode-a discontinuous heating and defrosting mode; in the discontinuous heating and defrosting mode, the first regulating valve 102 is located at the second valve position, the second regulating valve 103 is located at the second valve position, the outdoor heat exchanger 104 is used as a condenser, the accumulator 201 is used as an evaporator, and the indoor heat exchanger 7 is not operated.

In some embodiments, the operating modes of the air conditioning system include a thirteenth operating mode-a continuous heating and defrosting mode; in the continuous heating and defrosting mode, the first regulating valve 102 is located at the second valve position, the second regulating valve 103 is located at the first valve position, the outdoor heat exchanger 104 is used as a condenser, the accumulator 201 is used as an evaporator, and the indoor heat exchanger 7 is used as a condenser.

The connections of the piping and valves of the first embodiment of the air conditioning system are described in detail below with reference to fig. 1 to 14.

Referring to fig. 1, the entire air conditioning system includes an external machine part 1, an energy accumulation part 2, and an internal machine part.

The outer machine part 1 includes a compressor 101, a first regulation valve 102, a second regulation valve 103, an outdoor heat exchanger 104, an outdoor expansion valve 105, a supercooling expansion valve 106, a first subcooler 107, and a gas-liquid separator 108.

The first port D of the first regulating valve 102 is connected to the outlet of the compressor 101, the second port C of the first regulating valve 102 is connected to the outdoor heat exchanger 104, the third port S of the first regulating valve 102 is connected to the gas-liquid separator 108, and the fourth port E of the first regulating valve 102 is connected to the third port S of the first regulating valve 102 via a first orifice.

The first port D of the second regulating valve 103 is connected to the outlet of the compressor 101, the second port C of the second regulating valve 103 is connected to the third port S of the second regulating valve 103 via a second orifice, the third port S of the second regulating valve 103 is connected to the gas-liquid separator 108, and the fourth port E of the second regulating valve 103 is connected to the gas-side manifold 4.

One end of the outdoor heat exchanger 104 is connected to the second port C of the first regulator valve 102, and the other end of the outdoor heat exchanger 104 is connected to the outdoor expansion valve 105 and the first subcooler 107 in this order.

The outdoor expansion valve 105 is provided on a pipe connecting the outdoor heat exchanger 104 and the first subcooler 107. One end of the outdoor expansion valve 105 is connected to the outdoor heat exchanger 104, and the other end is connected to the first flow path of the first subcooler 107.

The first subcooler 107 includes a first flow path and a second flow path; the first flow path connects the liquid-side header pipe 3 and the outdoor expansion valve 105, and the second flow path connects the third port S and the fourth port E of the first regulator valve 102, the second port C and the third port S of the second regulator valve 103, the first gas pipe 203, and the gas-liquid separator 108, respectively.

The subcooling expansion valve 106 connects the first flow path and the second flow path.

The inlet of the gas-liquid separator 108 is connected to the third port S and the fourth port E of the first regulating valve 102, the second port C and the third port S of the second regulating valve 103, the second flow path, and the first gas pipe 203. The outlet of the gas-liquid separator 108 is connected to the inlet of the compressor 101.

The energy storage part 2 comprises an energy storage 201, and the energy storage 201 is connected with the outer machine part 1 and the inner machine part through gas pipes and liquid pipes. By switching and combining the first regulating valve 102 and the second regulating valve 103, a plurality of refrigerant circulation passages having different functions can be realized.

The first port 201a of the accumulator 201 is connected to the outlet of the compressor 101 through the second gas pipe 202, to the liquid side header pipe 3 through the first liquid pipe 204, and to the liquid side header pipe 3 through the third liquid pipe 213.

The second port 201b of the accumulator 201 is connected to the first liquid pipe 204 via the second liquid pipe 205 and to the gas-liquid separator 108 via the second gas pipe 203.

A liquid separator 214 is arranged at the first port 201a of the accumulator 201, an energy storage expansion valve 206 and a cold accumulation check valve 207 are arranged on the first liquid pipe 204, and the energy storage expansion valve 206 is close to the first port 201a of the accumulator 201 relative to the cold accumulation check valve 207. A high pressure gas valve 208 is disposed on the second gas pipe 202. A cold release check valve 209 is arranged on the third liquid pipe 213, a cold release valve 212 is arranged on the second liquid pipe 205, a heat release valve 210 is arranged on the second gas pipe 203, and a bypass valve 211 is arranged between the connection of the first liquid pipe 204 and the liquid side manifold 3 and the connection of the third liquid pipe 213 and the liquid side manifold 3.

The accumulator 201 is filled with an energy storage material and is provided with a refrigerant pipeline. The refrigerant flows in the pipeline and fully exchanges heat with the energy storage material, and the energy storage material can store and release cold and heat.

Accumulator 201 may act as an evaporator, a condenser, or a subcooler.

The embodiment of the utility model provides an air conditioning system passes through the switching of pipeline, valve member, can make heat pump air conditioning system realize that conventional refrigeration, complete cold-storage, cold-storage refrigerate simultaneously, the supercooling is released cold, the condensation is released cold, parallelly connected release cold, conventional heat, complete heat accumulation, heat while heat accumulation, mix and release heat, independently release heat, the discontinuous heats the defrosting, heats thirteen functions such as defrosting in succession.

The control methods of the first regulating valve 102, the second regulating valve 103, the high-pressure gas valve 208, the heat release valve 210, the cold release valve 212, the bypass valve 211, the outdoor expansion valve 105 and the energy storage expansion valve 206 in the thirteen working modes of the air conditioning system are shown in table 1:

TABLE 1

The thirteen operation modes of the air conditioning system will be described in detail with reference to fig. 2 to 14.

Referring to fig. 2, a first mode of operation-conventional refrigeration:

the first regulating valve 102 is located at the second valve position, the second regulating valve 103 is located at the second valve position, the bypass valve 211 is opened, the outdoor expansion valve 105 is opened, the energy storage expansion valve 206, the cold release valve 212, the high-pressure gas valve 208 and the heat release valve 210 are all closed, the indoor heat exchanger 7 serves as an evaporator, the outdoor heat exchanger 104 serves as a condenser, and the energy accumulator 201 is closed. The refrigerant discharged from the compressor 101 enters the outdoor heat exchanger 104 through the first regulating valve 102, is condensed, enters the indoor heat exchanger 7 through the liquid-side header pipe 3, is evaporated in the indoor heat exchanger 7, enters the gas-liquid separator 108 through the gas-side header pipe 4 and the second regulating valve 103, passes through the gas-liquid separator 108, and enters the suction side of the compressor 101. The accumulator 201 is not used at this time, and only the normal refrigeration cycle function is realized.

Referring to fig. 3, the second mode of operation-full cold storage:

the first regulating valve 102 and the second regulating valve 103 are both located at the second valve position, the outdoor expansion valve 105, the heat release valve 210 and the charge expansion valve 206 are opened, and the cold release valve 212, the high pressure gas valve 208 and the bypass valve 211 are closed. The indoor heat exchanger 7 is closed; the outdoor heat exchanger 104 functions as a condenser, and its 201 functions as an evaporator. The refrigerant discharged from the compressor 101 flows through the first regulating valve 102, enters the outdoor heat exchanger 104, is condensed, passes through the liquid-side header pipe 3 and the accumulator expansion valve 206, enters the accumulator 201 through the first port 201a of the accumulator 201, evaporates in the accumulator 201, enters the gas-liquid separator 108 through the first gas pipe 203, passes through the gas-liquid separator 108, and enters the suction side of the compressor 101. The indoor heat exchanger 7 is closed, the refrigerant does not flow through the indoor heat exchanger 7, but evaporates in the accumulator 201, and the cold energy is stored in the accumulator 201. The two-phase refrigerant enters the accumulator 201 from the first port 201a of the accumulator 201 through the liquid separator 214, and the gaseous refrigerant is discharged from the second port 201b of the accumulator 201.

Referring to fig. 4, a third mode of operation-cold storage with simultaneous cooling:

the first regulating valve 102 and the second regulating valve 103 are both positioned at the second valve position, the outdoor expansion valve 105, the heat release valve 210, the bypass valve 211 and the energy storage expansion valve 206 are opened, and the cold release valve 212 and the high-pressure air valve 208 are closed. The indoor heat exchanger 7 serves as an evaporator, the outdoor heat exchanger 104 serves as a condenser, and the accumulator 201 serves as an evaporator. The refrigerant discharged from the compressor 101 flows through the first regulating valve 102, enters the outdoor heat exchanger 104, is condensed, is divided into two paths by the liquid side header pipe 3, one path enters the energy accumulator 201 through the energy accumulation expansion valve 206, flows into the first gas pipe 203 after being evaporated, the other path enters the indoor heat exchanger 7, flows into the gas side header pipe 4 after being evaporated, and the two paths are converged at the inlet of the gas-liquid separator 108 and return to the suction side of the compressor 101 after passing through the gas-liquid separator 108. At this time, the energy accumulator 201 and the indoor heat exchanger 7 simultaneously serve as evaporators, the energy accumulator 201 stores cold, and the indoor heat exchanger 7 refrigerates. The two-phase refrigerant enters the accumulator 201 from the first port 201a of the accumulator 201 through the liquid separator 214, and the gaseous refrigerant is discharged from the second port 201b of the accumulator 201.

Referring to fig. 5, fourth mode of operation-super-cooled cold release:

the first regulating valve 102 and the second regulating valve 103 are both positioned at the second valve position, the outdoor expansion valve 105 and the cooling release valve 212 are opened, and the energy storage expansion valve 206, the high-pressure air valve 208, the heat release valve 210 and the bypass valve 211 are closed. The indoor heat exchanger 7 serves as an evaporator, the outdoor heat exchanger 104 serves as a condenser, and the accumulator 201 serves as a subcooler. The refrigerant discharged from the compressor 101 flows through the first regulating valve 102, enters the outdoor heat exchanger 104, is condensed, enters the accumulator 201 through the liquid side header pipe 3 and the second liquid pipe 205, is subcooled, enters the liquid side header pipe 3 through the third liquid pipe 213, is evaporated in the indoor heat exchanger 7, and then returns to the suction side of the compressor 101 through the gas side header pipe 4, the second regulating valve 103 and the gas-liquid separator 108. At this time, the energy accumulator 201 serves as a subcooler, and the stored cold energy is released to the refrigerant, so that the supercooling degree of the refrigerant is further improved, and the refrigerating capacity of the refrigerant is improved. The liquid refrigerant enters the accumulator 201 from the second port 201b of the accumulator 201, and after being supercooled in the accumulator 201, the liquid refrigerant flows out from the first port 201a of the accumulator 201.

Referring to fig. 6, fifth mode of operation-condensate cold release:

the first regulating valve 102 is located at the first valve position, the second regulating valve 103 is located at the second valve position, the outdoor expansion valve 105, the energy storage expansion valve 206, the heat release valve 210 and the bypass valve 211 are closed, and the high-pressure gas valve 208 and the cold release valve 212 are opened. The indoor heat exchanger 7 acts as an evaporator, the outdoor heat exchanger 104 is turned off, and the accumulator 201 acts as a condenser. The refrigerant discharged from the compressor 101 flows into the accumulator 201 through the second gas pipe 202, the high-pressure gas valve 208, the second liquid flow pipe 205, the cold release valve 212, and the second port 201b of the accumulator 201, condenses, enters the liquid side header pipe 3 through the first port 201a and the third liquid pipe 213 of the accumulator 201, evaporates in the indoor heat exchanger 7, and returns to the suction side of the compressor 101 through the gas side header pipe 4, the second regulating valve 103, and the gas-liquid separator 108. Instead of using the outdoor heat exchanger 104, the accumulator 201 is used as a condenser to provide cooling energy for the refrigeration cycle. Since the temperature of the cold storage material in the energy accumulator 201 is much lower than the outdoor ambient temperature, the refrigeration cycle can be operated under a low pressure ratio condition, and the load of the compressor 101 is greatly reduced. The gaseous refrigerant enters the accumulator 201 from the second port 201b of the accumulator 201, and the condensed liquid refrigerant is discharged from the first port 201a of the accumulator 201.

Referring to fig. 7, sixth mode of operation-parallel cooling:

the first regulating valve 102 and the second regulating valve 103 are both positioned at the second valve position, the energy storage expansion valve 206 and the heat release valve 210 are closed, and the outdoor expansion valve 105, the high-pressure gas valve 208, the cold release valve 212 and the bypass valve 211 are opened. The indoor heat exchanger 7 serves as an evaporator, the outdoor heat exchanger 104 serves as a condenser, and the accumulator 201 serves as a condenser.

The refrigerant discharged from the compressor 101 is divided into two paths, the first path enters the accumulator 201 through the second gas pipe 202, the second liquid pipe 205 and the second port 201b of the accumulator 201 for condensation, then enters the liquid side header pipe 3 through the first port 201a and the third liquid pipe 213 of the accumulator 201, the second path enters the outdoor heat exchanger 104 through the first regulating valve 102 for condensation, and after being converged with the first path through the liquid side header pipe 3, is evaporated in the indoor heat exchanger 7, and then returns to the suction side of the compressor 101 through the gas side header pipe 4, the second regulating valve 103 and the gas-liquid separator 108. At this time, the outdoor heat exchanger 104 and the energy accumulator 201 are used as condensers at the same time, so that cooling capacity is provided for the refrigeration cycle, and the condensing capacity is improved. The gaseous refrigerant enters the accumulator 201 from the second port 201b of the accumulator 201, and the condensed liquid refrigerant is discharged from the first port 201a of the accumulator 201.

Referring to fig. 8, seventh mode of operation-conventional heating:

the first regulating valve 102 and the second regulating valve 103 are both located at the first valve position, the bypass valve 211 is opened, the outdoor expansion valve 105 is opened, and the charge expansion valve 206, the cool-release valve 212, the high-pressure gas valve 208 and the heat-release valve 210 are closed. The indoor heat exchanger 7 functions as a condenser, the outdoor heat exchanger 104 functions as an evaporator, and the accumulator 201 is turned off.

The refrigerant discharged from the compressor 101 enters the gas-side header pipe 4 through the second regulating valve 103, flows into the indoor heat exchanger 7, is condensed, is throttled by the outdoor expansion valve 105 through the liquid-side header pipe 3, flows into the outdoor heat exchanger 104, is evaporated, and returns to the suction side of the compressor 101 through the first regulating valve 102 and the gas-liquid separator 108. The accumulator 201 is not used at this time, and only a conventional heating cycle is used.

Referring to fig. 9, eighth mode of operation-full heat storage:

the first regulating valve 102 is positioned at the first valve position, the second regulating valve 103 is positioned at the second valve position, the high-pressure gas valve 208, the cold release valve 212 and the bypass valve 211 are opened, the outdoor expansion valve 105 is opened, and the energy storage expansion valve 206 and the heat release valve 210 are closed. The indoor heat exchanger 7 is turned off, the outdoor heat exchanger 104 serves as an evaporator, and the accumulator 201 serves as a condenser.

The refrigerant discharged from the compressor 101 enters the accumulator 201 through the second gas pipe 202, the second liquid pipe flow 205, and the second port 201b of the accumulator 201, condenses, enters the liquid side header pipe 3 through the first port 201a of the accumulator 201 and the third liquid pipe 213, throttles by flowing into the outdoor expansion valve 105, evaporates in the outdoor heat exchanger 104, and returns to the suction side of the compressor 101 through the first regulating valve 102 and the gas-liquid separator 108. At this time, the refrigerant is condensed in the accumulator 201, and heat is stored in the accumulator 201 and evaporated in the outdoor heat exchanger 104. The gaseous refrigerant enters the accumulator 201 from the second port 201b of the accumulator 201, and the condensed liquid refrigerant flows out from the first port 201a of the accumulator 201.

Referring to fig. 10, ninth operation mode-heat storage while heating:

the first regulating valve 102 and the second regulating valve 103 are both positioned at the first valve position, the high-pressure gas valve 208, the cold release valve 212 and the bypass valve 211 are opened, the outdoor expansion valve 105 is opened, and the energy storage expansion valve 206 and the heat release valve 210 are closed. The indoor heat exchanger 7 serves as a condenser, the outdoor heat exchanger 104 serves as an evaporator, and the accumulator 201 serves as a condenser.

The refrigerant discharged from the compressor 101 is divided into two paths, one path enters the accumulator 201 through the second gas pipe 202, the second liquid pipe flow 205 and the second port 201b of the accumulator 201 for condensation, then enters the liquid side header pipe 3 through the first port 201a and the third liquid pipe 213 of the accumulator 201, the other path enters the indoor heat exchanger 7 through the second regulating valve 103, after condensation, enters the liquid side header pipe 3 to be merged with the first path of refrigerant, then flows into the outdoor expansion valve 105 for throttling through the bypass valve 211, is evaporated in the outdoor heat exchanger 104, and then returns to the suction side of the compressor 101 through the first regulating valve 102 and the gas-liquid separator 108. At this time, the accumulator 201 and the indoor heat exchanger 7 simultaneously function as a condenser, heat is stored while heating, and the outdoor heat exchanger 104 functions as an evaporator. The gaseous refrigerant enters the accumulator 201 from the second port 201b of the accumulator 201, and the condensed liquid refrigerant flows out from the first port 201a of the accumulator 201.

Referring to fig. 11, tenth mode of operation-hybrid heat release:

the first regulating valve 102 and the second regulating valve 103 are both located at the first valve position, the heat release valve 210 and the bypass valve 211 are opened, the outdoor expansion valve 105 and the energy storage expansion valve 206 are opened, and the cold release valve 212 and the high-pressure air valve 208 are closed. The indoor heat exchanger 7 serves as a condenser, the outdoor heat exchanger 104 serves as an evaporator, and the accumulator 201 serves as an evaporator.

The refrigerant discharged from the compressor 101 flows into the indoor heat exchanger 7 through the second regulating valve 103 and the gas side header pipe 4 to be condensed, then enters the liquid side header pipe 3 and is branched after passing through the bypass valve 211, one path of the refrigerant passes through the first liquid pipe 204, is throttled by the energy storage expansion valve 206, enters the energy storage 201 through the first port 201a of the energy storage 201, is evaporated in the energy storage 201, then flows into the first gas pipe 203 through the second port 201b of the energy storage 201, the other path of the refrigerant passes through the liquid side header pipe 3, is throttled in the outdoor expansion valve 105, flows into the outdoor heat exchanger 104 to be evaporated, and the two paths of the refrigerant are converged at the inlet section of the gas-liquid separator 108 and return to the suction side of the compressor 101. At this time, the accumulator 201 bears a part of the evaporation load, and increases the suction pressure. The two-phase refrigerant enters the accumulator 201 from the first port 201a of the accumulator 201 through the liquid separator 214, and the evaporated gaseous refrigerant flows out from the second port 201b of the accumulator 201.

Referring to fig. 12, eleventh mode of operation-independent heat release:

the first regulating valve 102 and the second regulating valve 103 are both located at the first valve position, the heat release valve 210 and the bypass valve 211 are opened, the energy storage expansion valve 206 is opened, and the outdoor expansion valve 105, the cold release valve 212 and the high-pressure gas valve 208 are all closed. The indoor heat exchanger 7 acts as a condenser, the outdoor heat exchanger 104 is turned off, and the accumulator 201 acts as an evaporator.

The refrigerant discharged from the compressor 101 flows into the indoor heat exchanger 7 through the second regulating valve 103 and the gas-side header pipe 4 to be condensed, then enters the liquid-side header pipe 3, passes through the first liquid pipe 204, flows through the energy storage expansion valve 206 for throttling, enters the energy storage 201 through the first port 201a of the energy storage 201 to be evaporated, then enters the first gas pipe 203 through the second port 201b of the energy storage 201, then flows into the gas-liquid separator 108, and finally returns to the suction side of the compressor 101. The accumulator 201 now takes the full evaporation load. The two-phase refrigerant enters the accumulator 201 from the first port 201a of the accumulator 201 through the liquid separator 214, and the evaporated gaseous refrigerant flows out from the second port 201b of the accumulator 201.

Referring to fig. 13, a twelfth operation mode-discontinuous heating defrosting:

the first regulating valve 102 is located at the second valve position, the second regulating valve 103 is located at the second valve position, the cold release valve 212, the high-pressure gas valve 208 and the bypass valve 211 are all closed, the energy storage expansion valve is opened 206, and the outdoor expansion valve 105 and the heat release valve 210 are opened. The indoor heat exchanger 7 is turned off, the outdoor heat exchanger 104 serves as a condenser, and the accumulator 201 serves as an evaporator.

The refrigerant discharged from the compressor 101 flows through the first regulating valve 102, enters the outdoor heat exchanger 104, is condensed, then enters the first liquid pipe 204 through the liquid side header pipe 3, flows through the energy storage expansion valve 206, is throttled, enters the energy storage 201 through the first port 201a of the energy storage 201, is evaporated in the energy storage 201, enters the first gas pipe 203 through the second port 201b of the energy storage 201, and then returns to the suction side of the compressor 101 through the gas-liquid separator 108. The refrigerant is evaporated in the accumulator 201 without being evaporated in the indoor heat exchanger 7, and the stored heat is used to defrost the outdoor heat exchanger 104. The two-phase refrigerant enters the accumulator 201 from the first port 201a of the accumulator 201 through the liquid separator 214, and the evaporated gaseous refrigerant flows out from the second port 201b of the accumulator 201.

Referring to fig. 14, a thirteenth operation mode-continuous heating defrosting:

the first regulating valve 102 is located at the second valve position, the second regulating valve 103 is located at the first valve position, the cold release valve 212 and the high-pressure gas valve 208 are both closed, the energy storage expansion valve 206 is opened, and the outdoor expansion valve 105, the heat release valve 210 and the bypass valve 211 are opened. The indoor heat exchanger 7 serves as a condenser, the outdoor heat exchanger 104 serves as a condenser, and the accumulator 201 serves as an evaporator.

The refrigerant discharged from the compressor 101 is divided, one path of the refrigerant enters the indoor heat exchanger 7 through the second regulating valve 103 and the gas-side header pipe 4 for condensation, then flows into the liquid-side header pipe 3, the other path of the refrigerant flows through the first regulating valve 102 and enters the outdoor heat exchanger 104 for condensation, joins with the first path of the refrigerant through the liquid-side header pipe 3, enters the first liquid pipe 204, flows through the energy storage expansion valve 206 for throttling, enters the energy accumulator 201 through the first port 201a of the energy accumulator 201, flows out from the second port 201b of the energy accumulator 201 after being evaporated, and returns to the suction side of the compressor 101 through the first gas pipe 203 and the gas-liquid separator 108. At this time, the refrigerant condenses in both the indoor heat exchanger 7 and the outdoor heat exchanger 104, evaporates in the accumulator 201, and heats and defrosts the room. The two-phase refrigerant enters the accumulator 201 from the first port 201a of the accumulator 201 through the liquid separator 214, and the evaporated gaseous refrigerant flows out from the second port 201b of the accumulator 201.

The connection of the piping and valves of the second embodiment of the air conditioning system is described in detail below with reference to fig. 15.

Referring to fig. 15, the second embodiment of the air conditioning system differs from the first embodiment of the air conditioning system in that: a second gas pipe 202.

In a first embodiment of the air conditioning system: a first end of the second gas pipe 202 is connected to an outlet of the compressor 101, a second end of the second gas pipe 202 is connected to the first liquid pipe 204, and a connection between the second end of the second gas pipe 202 and the first liquid pipe 204 is located between the accumulator expansion valve 206 and the cold accumulation check valve 207. The high-pressure gas valve 208 is arranged on the second gas pipe 202.

In a second embodiment of the air conditioning system: the first end of the second gas pipe 202 is connected to the gas-side manifold 4, the second end of the second gas pipe 202 is connected to the first liquid pipe 204, and the connection between the second end of the second gas pipe 202 and the first liquid pipe 204 is located between the energy storage expansion valve 206 and the cold accumulation check valve 207. The high pressure gas valve 208 is arranged on the second gas pipe 202.

The second embodiment of the air conditioning system is different from the first embodiment of the air conditioning system in that the end of the second air pipe 202 connected to the outlet of the compressor 101 is connected to the air-side header pipe 4 instead.

The opening and closing of the valves and the refrigerant flow path in the second embodiment of the air conditioning system are the same as those in the first embodiment of the air conditioning system.

The connection of the pipes and the valves of the third embodiment of the air conditioning system will be described in detail with reference to fig. 16 to 18.

Referring to fig. 16, the third embodiment of the air conditioning system is different from the first embodiment of the air conditioning system in that a storage container 220 is added to the third embodiment of the air conditioning system. The refrigerant quantity under different operation modes can be controlled by storing and releasing the refrigerant by the storage container 220, so that the circulating refrigerant quantity of the system is consistent with the refrigerant demand quantity of different operation modes, and the optimal heat exchange effect is exerted.

The storage container 220 has a first interface 220a, a second interface 220b, and a third interface 220c. The first header 220a and the second header 220b are both located above the third header 220c. The first port 220a is connected to the liquid-side header 3 via a liquid inlet valve 221. The second port 220b is connected to the second air pipe 202 via a pressurizing valve 222. The second port 220b is also connected to the first gas pipe 203 via a third throttle 225 and a gas balance valve 224. The third port 220c is connected to the first gas pipe 203 via a third orifice 225 and a drain valve 223.

The storage container 220 has three states in total: the system comprises an idle state, a refrigerant storage state and a refrigerant release state, wherein the idle state, the refrigerant storage state and the refrigerant release state can be used in different system modes (conventional refrigeration, complete cold storage and the like).

When the storage container 220 is not in operation, the liquid inlet valve 221, the pressurizing valve 222, the liquid outlet valve 223, and the gas balance valve 224 are all closed.

Referring to fig. 17, when it is determined that the storage container 220 needs to be started to store the refrigerant in the current operation mode, the liquid inlet valve 221 and the gas balance valve 224 are opened, and the pressurization valve 222 and the liquid discharge valve 223 are closed. The gas balance valve 224 is opened to make the pressure in the storage container 220 in a low pressure state, the liquid inlet valve 221 is opened to make the refrigerant inlet pipe in the storage container 220 in a medium pressure section, and the refrigerant enters the storage container 220 under the action of pressure difference.

Referring to fig. 18, when it is determined that the current operation mode requires the storage container 220 to be activated to release the refrigerant, the liquid inlet valve 221 and the gas balance valve 224 are closed, and the pressurization valve 222 and the liquid outlet valve 223 are opened. The drain valve 223 is opened to place the third port 220c of the storage container 220 in a low pressure state, the pressurizing valve 222 is opened to place the pressure in the storage container 220 in a high pressure state, and the refrigerant in the storage container 220 is discharged out of the storage container 220 under the action of gravity and a pressure difference and enters the pipe circulation.

The connection of the pipes and the valves of the fourth embodiment of the air conditioning system will be described in detail with reference to fig. 19 to 21.

Referring to fig. 19, the fourth embodiment of the air conditioning system is different from the first embodiment of the air conditioning system in that a storage container 220 is added to the fourth embodiment of the air conditioning system. The refrigerant quantity under different operation modes can be controlled by storing and releasing the refrigerant by the storage container 220, so that the circulating refrigerant quantity of the system is consistent with the refrigerant demand quantity of different operation modes, and the optimal heat exchange effect is exerted

The storage container 220 has a first interface 220a 'and a second interface 220c'. The first header 220a 'is positioned below the second header 220c'. The first port 220a 'is connected to the liquid-side manifold 3 via an air balance valve 224, and the second port 220c' is connected to the first gas pipe 203 via a drain valve 223 and a third orifice 225.

The storage container 220 has three states in total: the system comprises an idle state, a refrigerant storage state and a refrigerant release state, wherein the idle state, the refrigerant storage state and the refrigerant release state can be used in different system modes (conventional refrigeration, complete cold accumulation and the like).

When the storage container 220 is not in operation, the drain valve 223 and the air balance valve 224 are both closed.

Referring to fig. 20, when it is determined that the storage container 220 needs to be started to store the refrigerant in the current operation mode, both the drain valve 223 and the air balance valve 224 are opened, and the refrigerant enters the storage container 220 through the air balance valve 224 and the first port 220a' under the action of the pressure difference and flows out of the storage container 220 through the drain valve 223.

Referring to fig. 21, when it is determined that the storage container 220 needs to be started to release the refrigerant in the current operation mode, the air balance valve 224 is closed, the liquid discharge valve 223 is opened, and the refrigerant in the storage container 220 flows out of the liquid discharge valve 223 under the action of gravity and a pressure difference to enter a pipeline cycle.

The embodiment of the utility model provides an air conditioning system for based on heat pump type's multi-functional energy storage air conditioning system, utilize energy storage system to realize thirteen kinds of functions such as cold-storage, cold release.

The embodiment of the utility model provides an air conditioning system is through simpler pipeline design, and integrated multiple functions has widened the use scene of energy storage, can realize the value of energy storage more fully.

The embodiment of the utility model provides an air conditioning system utilizes the energy storage ware can be at the off-peak electricity price time interval deposit energy, release energy when the peak electricity price, the power consumption of the lowering system this moment.

The embodiment of the utility model provides an air conditioning system is under the refrigeration mode, when being present in the demand that reduces power consumption by a wide margin in the short time, then can use the condensation to release cold function, carries out refrigeration cycle as the condenser with the energy storage ware alone promptly. Because the temperature of the energy storage material after the cold energy is stored in the energy storage device is far lower than the outdoor ambient temperature, the compressor does not need to provide overhigh pressure, the system can run under the condition of low compression ratio, and the energy consumption is greatly reduced. Meanwhile, the heat conduction between the low-temperature energy storage material and the refrigerant is utilized to replace the air cooling heat exchange of the outdoor heat exchanger, and the heat exchange efficiency is improved.

The embodiment of the utility model provides an air conditioning system can heat in succession simultaneously when changing the frost.

The embodiment of the utility model provides an air conditioning system uses the method of two-way refrigerant that advances, and even branch liquid when guaranteeing liquid refrigerant and getting into the energy storage ware also can reduce the loss of pressure when gaseous state refrigerant gets into the energy storage ware.

The embodiment of the utility model provides an air conditioning system can incessantly heat, can shift the scene to the power load of multiple difference and provide energy storage, release can the service to can heat in succession when changing the frost.

Some embodiments also provide a control apparatus of an air conditioning system, including:

a memory configured to store instructions;

and a processor coupled to the memory, the processor configured to execute a control method implementing the air conditioning system in the above-described embodiments based on instructions stored by the memory.

Some embodiments also provide a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, which when executed by a processor, implement the control method of the air conditioning system in the above embodiments.

It should be noted that: some "pipe", "valve" etc. in the embodiment of the present invention, it has the definite words such as "gas", "liquid", "cold" or "hot" to be limited, and these definite words are limited only in order to distinguish different positions or different connection relation "pipe", "valve", and do not limit "pipe", "valve" and must have the function that the definite words are limited, for example: the air pipe is not limited to only be capable of flowing gas in the air pipe, the liquid pipe is not limited to be capable of flowing liquid in the air pipe, the liquid pipe is only used for distinguishing pipelines with different connection relations, and the air pipe is similarly applicable to a liquid valve, an air valve, a hot valve, a cold valve, an energy storage valve and the like.

Based on the above description of various embodiments of the invention, the technical features of one embodiment may be combined with one or more other embodiments advantageously without explicit negatives or conflicts.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.

Claims (17)

1. An air conditioning system, comprising:

a compressor (101);

an outdoor heat exchanger (104);

an indoor heat exchanger (7);

an accumulator (201) comprising a first port (201 a) and a second port (201 b);

a first regulating valve (102) located downstream of the compressor (101), the first regulating valve (102) being connected to the outdoor heat exchanger (104), the accumulator (201) and the compressor (101), respectively; and

a second regulating valve (103) also located downstream of the compressor (101), the second regulating valve (103) being connected to the compressor (101), the accumulator (201), and the indoor heat exchanger (7), respectively;

wherein the first regulating valve (102) and the second regulating valve (103) are configured to regulate their valve positions such that at least one of the outdoor heat exchanger (104), the indoor heat exchanger (7), and the accumulator (201) is configured as a condenser and at least another one is configured as an evaporator; and the accumulator (201) is configured to be in an evaporator state, the first port (201 a) is a refrigerant inlet end, the second port (201 b) is a refrigerant outlet end, and the accumulator (201) is configured to be in a condenser state, the second port (201 b) is a refrigerant inlet end, and the first port (201 a) is a refrigerant outlet end.

2. The air conditioning system of claim 1, further comprising:

a liquid side header pipe (3) having one end connected to the first port (201 a) of the accumulator (201) and the outdoor heat exchanger (104), respectively; the other end is connected with one end of the indoor heat exchanger (7);

one end of the gas side header pipe (4) is connected with the second regulating valve (103), and the other end of the gas side header pipe is connected with the other end of the indoor heat exchanger (7); and

and one end of the first air pipe (203) is connected with the second port (201 b) of the accumulator (201), and the other end of the first air pipe is connected with an inlet of the compressor (101).

3. The air conditioning system of claim 2, wherein the first regulator valve (102) includes a first port, a second port, a third port, and a fourth port;

the first valve port of the first regulating valve (102) is connected with the outlet of the compressor (101), the second valve port of the first regulating valve (102) is connected with one end of the outdoor heat exchanger (104), and the third valve port of the first regulating valve (102) is respectively connected with the first air pipe (203) and the inlet of the compressor (101); the fourth valve port of the first regulating valve (102) is connected with the first air pipe (203) and the inlet of the compressor (101) through a first throttling element respectively;

wherein, when the first regulator valve (102) is in the first position, the first port and the fourth port of the first regulator valve (102) are communicated, and the second port and the third port of the first regulator valve (102) are communicated;

when the first regulator valve (102) is in the second position, the first port and the second port of the first regulator valve (102) are communicated, and the third port and the fourth port of the first regulator valve (102) are communicated.

4. Air conditioning system according to claim 2 or 3, characterized in that the second regulating valve (103) comprises a first port, a second port, a third port and a fourth port;

a first valve port of the second regulating valve (103) is connected with an outlet of the compressor (101), and a second valve port of the second regulating valve (103) is respectively connected with the first air pipe (203) and an inlet of the compressor (101) through a second throttling element; the third valve port of the second regulating valve (103) is respectively connected with the first air pipe (203) and the inlet of the compressor (101); the fourth valve port of the second regulating valve (103) is connected with the gas side manifold (4);

when the second regulating valve (103) is located at the first valve position, the first valve port and the fourth valve port of the second regulating valve (103) are communicated, and the second valve port and the third valve port of the second regulating valve (103) are communicated;

when the second regulating valve (103) is located at the second valve position, the first valve port and the second valve port of the second regulating valve (103) are communicated, and the third valve port and the fourth valve port of the second regulating valve (103) are communicated.

5. The air conditioning system of claim 2, further comprising:

a first subcooler (107) comprising a first flow path and a second flow path; the first flow path is connected with the liquid side header pipe (3) and the outdoor heat exchanger (104), and the second flow path is respectively connected with the first regulating valve (102), the second regulating valve (103), the first air pipe (203) and an inlet of the compressor (101).

6. The air conditioning system of claim 5, further comprising:

and an outdoor expansion valve (105) provided in a flow path connecting the first flow path and the outdoor heat exchanger (104).

7. The air conditioning system of claim 5, further comprising:

and a subcooling expansion valve (106) connecting the first flow path and the second flow path.

8. The air conditioning system of claim 2, further comprising:

a first liquid pipe (204) and a third liquid pipe (213), the first port (201 a) of the accumulator (201) is connected with the liquid side manifold (3) through the first liquid pipe (204) and the third liquid pipe (213), respectively; and

and the bypass valve (211) is arranged on the liquid side main pipe (3) and is positioned between the joint of the second end of the first liquid pipe (204) and the liquid side main pipe (3) and the joint of the second end of the third liquid pipe (213) and the liquid side main pipe (3).

9. The air conditioning system of claim 8, further comprising an energy storage expansion valve (206) and a cold accumulation check valve (207) disposed in the first liquid pipe (204), wherein an inlet of the cold accumulation check valve (207) is connected to the liquid side header pipe (3), and an outlet of the cold accumulation check valve (207) is connected to the energy storage expansion valve (206).

10. The air conditioning system as claimed in claim 8 or 9, further comprising a cold release check valve (209) provided at the third liquid pipe (213), an inlet of the cold release check valve (209) being connected with the first port (201 a) of the accumulator (201).

11. The air conditioning system of claim 9, further comprising:

a second gas pipe (202), a first end of which is connected with the gas side main pipe (4), a second end of which is connected with the first liquid pipe (204), and a joint of the second end of the second gas pipe (202) and the first liquid pipe (204) is positioned between the energy storage expansion valve (206) and the cold accumulation one-way valve (207);

and the high-pressure air valve (208) is arranged on the second air pipe (202).

12. The air conditioning system as claimed in claim 9, further comprising:

a second gas pipe (202), a first end of which is connected with an outlet of the compressor (101), a second end of which is connected with the first liquid pipe (204), and a connection point of the second end of the second gas pipe (202) and the first liquid pipe (204) is located between the energy storage expansion valve (206) and the cold accumulation one-way valve (207);

and the high-pressure air valve (208) is arranged on the second air pipe (202).

13. The air conditioning system as claimed in claim 11 or 12, further comprising:

a second liquid pipe (205) having a first end connected to the first liquid pipe and a second end connected to the second port (201 b) of the accumulator (201), wherein the connection between the first end of the second liquid pipe (205) and the first liquid pipe is located between the connection between the second end of the second gas pipe (202) and the first liquid pipe (204) and the cold accumulation check valve (207);

and the cooling release valve (212) is arranged on the second liquid pipe (205).

14. Air conditioning system according to claim 11 or 12, further comprising a storage container (220), a liquid inlet valve (221), a pressurization valve (222), a liquid discharge valve (223), a gas balance valve (224) and two third throttles (225); the storage container (220) has a first interface (220 a), a second interface (220 b), and a third interface (220 c);

the first interface (220 a) of the storage container (220) is connected with the liquid side header pipe (3), and the connection position of the first interface (220 a) and the liquid side header pipe (3) is positioned between the bypass valve (211) and the outdoor heat exchanger (104); the liquid inlet valve (221) is arranged on a pipeline connecting the first connector (220 a) and the liquid side header pipe (3);

the second port (220 b) of the storage container (220) is connected with the second air pipe (202); the pressurizing valve (222) is arranged on a pipeline connecting the second interface (220 b) and the second air pipe (202);

the second port (220 b) of the storage container (220) is also connected with the first air pipe (203); the air balance valve (224) is arranged on a pipeline connecting the second interface (220 b) and the first air pipe (203);

the third interface (220 c) of the storage container (220) is connected with the first air pipe (203); the drain valve (223) is arranged on a pipeline connecting the third interface (220 c) and the first air pipe (203);

wherein the junction of the third port (220 c) with the first gas pipe (203) is close to the inlet of the compressor (101) with respect to the junction of the second port (220 b) with the first gas pipe (203);

the two third throttling elements (225) are respectively arranged on a pipeline connecting the third interface (220 c) with the first air pipe (203) and a pipeline connecting the second interface (220 b) with the first air pipe (203).

15. The air conditioning system according to claim 11 or 12, further comprising a storage container (220), a drain valve (223), a gas balance valve (224), and a third throttling member (225); the storage container (220) has a first interface (220 a ') and a second interface (220 c');

the first port (220 a ') of the storage container (220) is connected with the liquid side header pipe (3), and the connection position of the first port (220 a') and the liquid side header pipe (3) is positioned between the bypass valve (211) and the outdoor heat exchanger (104); the gas balance valve (224) is arranged on a pipeline connecting the first interface (220 a') and the liquid side main pipe (3);

the second port (220 c') of the storage container (220) is connected with the first air pipe (203); the drain valve (223) is arranged on a pipeline connecting the second interface (220 c') and the first air pipe (203);

the third throttling element (225) is arranged on a pipeline of the second interface (220 c') connected with the first air pipe (203).

16. The air conditioning system of claim 2, further comprising:

a heat release valve (210), through which the second port (201 b) of the accumulator (201) is connected with the first gas pipe (203).

17. The air conditioning system as claimed in claim 1, further comprising a liquid distributor (214), wherein the liquid distributor (214) is provided at the first port (201 a) of the accumulator (201).

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