CN218544701U

CN218544701U - Refrigeration system

Info

Publication number: CN218544701U
Application number: CN202223050782.9U
Authority: CN
Inventors: 刘华; 袁帆; 张仕强; 陈敏
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-02-28
Anticipated expiration: 2032-11-15

Abstract

The utility model relates to a refrigerating system, wherein refrigerating system includes compressor (101), outdoor heat exchanger (105), indoor heat exchanger (301), energy storage ware (201) and valve member, first port (201 a) of energy storage ware (201) communicate with the gas vent of compressor (101) and outdoor heat exchanger (105) respectively, second port (201 b) of energy storage ware (201) communicate with the air inlet of indoor heat exchanger (301) and compressor (101) respectively; the valve assembly is connected with the compressor (101), the outdoor heat exchanger (105), the indoor heat exchanger (301) and the energy accumulator (201), the valve assembly is configured to control the flowing direction of a refrigerant and/or the on-off of a connecting pipeline so as to adjust the states of the outdoor heat exchanger, the indoor heat exchanger and the energy accumulator and realize the switching of the refrigeration system among different working modes, and the state of the energy accumulator comprises a non-working state, a cold accumulation state and a cold release state.

Description

Refrigeration system

Technical Field

The utility model relates to a refrigeration technology field especially relates to a refrigerating system.

Background

In order to relieve the discomfort caused by hot weather, people usually use refrigeration equipment to reduce the indoor temperature and improve the comfort level of the indoor temperature.

At present, although the structure of the refrigerating machine is various, some air conditioning units also adopt a cold accumulation module, but the working mode of the cold accumulation module is single, and the diversified requirements cannot be met.

It is noted that the information disclosed in this background section of the invention is only for enhancement of understanding of the general background of the invention, and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a refrigerating system can satisfy more demands of user.

According to an aspect of the present invention, there is provided a refrigeration system, comprising:

a compressor;

an outdoor heat exchanger;

an indoor heat exchanger;

the first port of the energy accumulator is respectively communicated with the exhaust port of the compressor and the outdoor heat exchanger, and the second port of the energy accumulator is respectively communicated with the indoor heat exchanger and the air inlet of the compressor; and

the valve assembly is connected with the compressor, the outdoor heat exchanger, the indoor heat exchanger and the energy accumulator, and is configured to control the flow direction of a refrigerant and/or the on-off of a connecting pipeline so as to adjust the states of the outdoor heat exchanger, the indoor heat exchanger and the energy accumulator and realize the switching of the refrigerating system among different working modes, and the state of the energy accumulator comprises a non-working state, a cold storage state and a cold release state.

In some embodiments, the flow direction of the refrigerant in the accumulator when the accumulator is in the cold storage state is the same as the flow direction of the refrigerant in the accumulator when the accumulator is in the cold release state.

In some embodiments, the valve assembly includes a first throttle member disposed on a connection line between the first port of the accumulator and the outdoor heat exchanger.

In some embodiments, the valve assembly includes a first control valve, one end of which is connected to a connection line between the first throttle member and the outdoor heat exchanger, and the other end of which is in communication with the indoor heat exchanger.

In some embodiments, the valve assembly includes a second control valve disposed on the connection line between the second port of the accumulator and the indoor heat exchanger.

In some embodiments, the second control valve comprises an electrically controlled valve or a check valve, an inlet of the check valve being in communication with the second port of the accumulator.

In some embodiments, the valve assembly further comprises a third control valve disposed on the connecting line between the second port of the accumulator and the inlet of the compressor.

In some embodiments, the valve assembly further includes a fourth control valve, one end of which is connected to a connection line between the discharge port of the compressor and the outdoor heat exchanger, and the other end of which is connected to a connection line between the first throttle member and the outdoor heat exchanger.

In some embodiments, the valve assembly further comprises a second throttling member connected to the connection line between the outdoor heat exchanger and the indoor heat exchanger.

In some embodiments, the refrigeration system further includes a subcooler disposed between the outdoor heat exchanger and the indoor heat exchanger, the subcooler being in communication with the air inlet of the compressor, the second throttling element being disposed between the outdoor heat exchanger and the subcooler.

In some embodiments, the valve assembly further includes a third throttling member disposed between the second throttling member and the subcooler, and a port of the subcooler in communication with the third throttling member and a port of the subcooler in communication with the air inlet of the compressor are in communication through an internal conduit of the subcooler.

In some embodiments, the valve assembly includes a first throttle member, a second throttle member, a first control valve, a second control valve, a third control valve, and a fourth control valve, the first throttle member is disposed on a connection pipe between the first port of the accumulator and the outdoor heat exchanger, one end of the first control valve is connected to the connection pipe between the first throttle member and the outdoor heat exchanger, the other end of the first control valve is communicated with the indoor heat exchanger, the second control valve is disposed on the connection pipe between the second port of the accumulator and the indoor heat exchanger, the third control valve is disposed on the connection pipe between the second port of the accumulator and the air inlet of the compressor, one end of the fourth control valve is connected to the connection pipe between the air outlet of the compressor and the outdoor heat exchanger, the other end of the fourth control valve is connected to the connection pipe between the first throttle member and the outdoor heat exchanger, and the second throttle member is connected to the connection pipe between the outdoor heat exchanger and the indoor heat exchanger.

In some embodiments, the refrigeration system further comprises a storage container in fluid communication with the compressor, the outdoor heat exchanger, and the indoor heat exchanger, and the valve assembly is further configured to adjust a state of the storage container by controlling a flow direction of the refrigerant and/or on/off of the connecting line, the state of the storage container including a closed state, a refrigerant storage state, and a refrigerant release state.

In some embodiments, the valve assembly includes a first throttle member, a first control valve, a third control valve, a fourth control valve, a fifth control valve, a sixth control valve, a seventh control valve, and an eighth control valve, the first throttle member is connected between the first port of the accumulator and the outdoor heat exchanger, one end of the first control valve is connected to a connection pipe between the first throttle member and the outdoor heat exchanger, the other end of the first control valve is communicated with the indoor heat exchanger, the third control valve is disposed on a connection pipe between the second port of the accumulator and the intake port of the compressor, one end of the fourth control valve is connected to a connection pipe between the discharge port of the compressor and the outdoor heat exchanger, the other end of the fourth control valve is connected to a connection pipe between the first throttle member and the outdoor heat exchanger, the storage container has a first port, a second port, and a third port, one end of a fifth control valve is communicated with a first interface of the storage container, the other end of the fifth control valve is connected to a pipeline of the outdoor heat exchanger, which is connected with the first throttling element and the first control valve respectively, one end of a sixth control valve is communicated with a second interface of the storage container, the other end of the sixth control valve is connected to a connecting pipeline between an exhaust port of the compressor and the fourth control valve, one end of a seventh control valve is communicated with a third interface of the storage container, the other end of the seventh control valve is connected to a pipeline of an air inlet of the compressor, which is connected with the third control valve and the indoor heat exchanger respectively, one end of an eighth control valve is communicated with the second interface of the storage container, and the other end of the eighth control valve is connected to a pipeline of an air inlet of the compressor, which is connected with the third control valve and the indoor heat exchanger respectively.

In some embodiments, the valve assembly further comprises a fourth throttling element connected between the seventh control valve and the third port of the storage vessel, and a fifth throttling element connected between the eighth control valve and the second port of the storage vessel.

In some embodiments, the valve assembly includes a first throttle member, a first control valve, a third control valve, a ninth control valve, a tenth control valve, and a sixth throttle member, the first throttle member is connected between the first port of the accumulator and the outdoor heat exchanger, one end of the first control valve is connected to a connection pipe between the first throttle member and the outdoor heat exchanger, the other end of the first control valve is communicated with the indoor heat exchanger, the third control valve is disposed on a connection pipe between the second port of the accumulator and the air inlet of the compressor, the storage container includes a fourth port and a fifth port, one end of the ninth control valve is communicated with the fourth port of the storage container, the other end of the ninth control valve is connected to a pipe of the outdoor heat exchanger connected to the first throttle member and the first control valve, respectively, the tenth control valve is connected between the fifth port of the storage container and the sixth throttle member, and the other end of the sixth throttle member is connected to a pipe of the air inlet of the compressor connected to the third control valve and the indoor heat exchanger, respectively.

Based on the technical scheme, the embodiment of the utility model provides a through the operation to the valve member, can change the flow direction of refrigerant and/or adjust connecting line's break-make to adjust the state of outdoor heat exchanger, indoor heat exchanger and energy storage ware, wherein, the energy storage ware can be closed, also can deposit the refrigerant or release the refrigerant, thereby makes refrigerating system possess the refrigeration mode of a plurality of differences, satisfies user's diversified demand, promotes user's use and experiences.

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 application, illustrate embodiment(s) 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 structural diagram of an embodiment of the refrigeration system of the present invention.

Fig. 2 is a schematic diagram of the refrigerant flow of an embodiment of the refrigeration system of the present invention in the conventional refrigeration mode.

Fig. 3 is a schematic diagram of the refrigerant flow of the embodiment of the refrigeration system of the present invention in the complete cold storage mode.

Fig. 4 is a schematic diagram of the refrigerant flow in the cooling and cold storage mode according to an embodiment of the refrigeration system of the present invention.

Fig. 5 is a schematic view illustrating the flow of the refrigerant in the supercooling cooling mode according to an embodiment of the present invention.

Fig. 6 is a schematic view illustrating the flow of the refrigerant in the condensing and cooling mode according to an embodiment of the refrigeration system of the present invention.

Fig. 7 is a schematic structural diagram of the first embodiment of the refrigeration system of the present invention.

Fig. 8 is a schematic structural diagram of a second embodiment of the refrigeration system of the present invention.

Fig. 9 is a schematic structural diagram of a third embodiment of the refrigeration system of the present invention.

Fig. 10 is a schematic structural view of a storage container in a state of storing refrigerant according to a third embodiment of the refrigeration system of the present invention.

Fig. 11 is a schematic structural view of a storage container in a state of releasing refrigerant according to a third embodiment of the refrigeration system of the present invention.

Fig. 12 is a schematic structural diagram of a fourth embodiment of the refrigeration system of the present invention.

Fig. 13 is a schematic structural view of a storage container in a state of storing refrigerant according to a fourth embodiment of the refrigeration system of the present invention.

Fig. 14 is a schematic structural view of a storage container in a state of releasing refrigerant according to a fourth embodiment of the refrigeration system of the present invention.

In the figure:

1. an outdoor unit; 2. an energy storage device; 3. a liquid side main pipe; 4. a gas side main pipe;

101. a compressor; 102. a gas-liquid separator; 103. a subcooler; 104. a third throttling element; 105. an outdoor heat exchanger; 106. a second orifice member;

201. an accumulator; 201a, a first port; 201b, a second port; 202. a first air pipe; 203. a first control valve; 204. a second control valve; 205. a first liquid pipe; 206. a second liquid pipe; 207. a first orifice member; 208. a third control valve; 209. a fourth control valve; 210. a second air pipe;

220. a storage container; 220a, a first interface; 220b, a second interface; 220c, a third interface; 220d, a fourth interface; 220e, a fifth interface; 221. a fifth control valve; 222. a sixth control valve; 223. a seventh control valve; 224. an eighth control valve; 225. a fourth orifice; 226. a fifth orifice member; 227. a ninth control valve; 228. a tenth control valve; 229. a sixth orifice;

301. indoor heat exchanger.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the invention.

As shown in fig. 1, in some embodiments of the refrigeration system provided by the present invention, the refrigeration system includes a compressor 101, an outdoor heat exchanger 105, an indoor heat exchanger 301, an accumulator 201 and a valve assembly, a first port 201a of the accumulator 201 is respectively communicated with an exhaust port of the compressor 101 and the outdoor heat exchanger 105, a second port 201b of the accumulator 201 is respectively communicated with an air inlet of the indoor heat exchanger 301 and an air inlet of the compressor 101, the valve assembly is connected with the compressor 101, the outdoor heat exchanger 105, the indoor heat exchanger 301 and the accumulator 201, the valve assembly is configured to control a flow direction of a refrigerant and/or make and break of a connecting pipeline, so as to adjust states of the outdoor heat exchanger 105, the indoor heat exchanger 301 and the accumulator 201, and to realize switching of the refrigeration system between different operation modes, and states of the accumulator 201 include a non-operation state, a cold storage state and a cold release state.

The above-mentioned embodiment can change the flow direction of refrigerant and/or adjust the break-make of connecting line through the operation to the valve member to adjust the state of outdoor heat exchanger 105, indoor heat exchanger 301 and energy storage 201, wherein, energy storage 201 can close, also can deposit the refrigerant or release the refrigerant, thereby make refrigerating system possess a plurality of different refrigeration mode, satisfy user's diversified demand, promote user's use and experience.

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.

Through the switching of the valve components, various working modes such as conventional refrigeration, complete cold accumulation, refrigeration cold accumulation, supercooling cold release, condensation cold release and the like can be realized.

In some embodiments, the flow direction of the refrigerant in the accumulator 201 when the accumulator 201 is in the cold storage state is the same as the flow direction of the refrigerant in the accumulator 201 when the accumulator 201 is in the cold storage release state.

As shown in fig. 1, when the accumulator 201 is in a cold energy storage state, the refrigerant flows from the first port 201a of the accumulator 201 to the second port 201b of the accumulator 201; when the accumulator 201 is in the cooling capacity released state, the refrigerant also flows from the first port 201a of the accumulator 201 to the second port 201b of the accumulator 201. The structure of the refrigeration system can be greatly simplified by the arrangement, for example, the number of parts of the valve assembly is simplified, so that the flow path arrangement of a refrigerant in the refrigeration system is simplified, the controllability of the refrigeration system is improved, and the refrigeration system has a positive effect on improving the reliability of the refrigeration system.

In some embodiments, the valve assembly includes a first orifice 207, and the first orifice 207 is disposed on a connection line between the first port 201a of the accumulator 201 and the outdoor heat exchanger 105.

The refrigerant flowing out of the outdoor heat exchanger 105 can be transformed by the first throttling element 207 and then enters the energy accumulator 201 through the first throttling element 207, so that the cold accumulation function of the energy accumulator 201 is realized.

In some embodiments, the valve assembly includes a first control valve 203, one end of the first control valve 203 is connected to the connection line between the first throttling member 207 and the outdoor heat exchanger 105, and the other end of the first control valve 203 is in communication with the indoor heat exchanger 301.

By arranging the first control valve 203, the refrigerant flowing out of the outdoor heat exchanger 105 can directly enter the indoor heat exchanger 301 without passing through the accumulator 201, and multiple working modes of the refrigeration system are possible.

In some embodiments, the valve assembly comprises a second control valve 204, the second control valve 204 being disposed on the connection line between the second port 201b of the accumulator 201 and the indoor heat exchanger 301.

By providing the second control valve 204, the connection between the second port 201b of the accumulator 201 and the indoor heat exchanger 301 can be controlled to be opened or closed, and the cooling function of the accumulator 201 can be controlled.

In some embodiments, the second control valve 204 comprises an electrically controlled valve or a one-way valve, an inlet of which communicates with the second port 201b of the accumulator 201.

When the second control valve 204 includes an electric control valve, the opening and closing or the opening size of the second control valve 204 can be actively controlled in an electric control manner, and the active regulation and control performance is better.

When the second control valve 204 includes a check valve, the flow direction of the refrigerant in the connection pipe between the second port 201b of the accumulator 201 and the indoor heat exchanger 301 may be controlled by the check valve, so as to prevent the refrigerant from flowing backwards.

In some embodiments, the valve assembly further comprises a third control valve 208, the third control valve 208 being arranged on a connection line between the second port 201b of the accumulator 201 and the inlet of the compressor 101.

By providing the third control valve 208, the on/off of the connection pipeline between the second port 201b of the accumulator 201 and the air inlet of the compressor 101 can be controlled, and the cold accumulation function of the accumulator 201 can be controlled.

In some embodiments, the valve assembly further includes a fourth control valve 209, one end of the fourth control valve 209 is connected to a connection line between the discharge port of the compressor 101 and the outdoor heat exchanger 105, and the other end of the fourth control valve 209 is connected to a connection line between the first throttle member 207 and the outdoor heat exchanger 105.

By providing the fourth control valve 209, the discharge air of the compressor 101 can directly enter the accumulator 201 without passing through the outdoor heat exchanger 105, thereby providing a possibility for realizing various operation modes of the refrigeration system.

In some embodiments, the valve assembly further comprises a second throttle member 106, the second throttle member 106 being connected to the connection line between the outdoor heat exchanger 105 and the indoor heat exchanger 301.

In some embodiments, the refrigeration system further includes a subcooler 103 disposed between the outdoor heat exchanger 105 and the indoor heat exchanger 301, and the subcooler 103 is in communication with an air inlet of the compressor 101, and the second throttling element 106 is disposed between the outdoor heat exchanger 105 and the subcooler 103.

In some embodiments, the valve assembly further includes a third throttling member 104, the third throttling member 104 is disposed between the second throttling member 106 and the subcooler 103, and a port of the subcooler 103 communicating with the third throttling member 104 and a port of the subcooler 103 communicating with an intake of the compressor 101 communicate through an internal pipe of the subcooler 103.

In some embodiments, the valve assembly further comprises a gas-liquid separator 102, an outlet of the gas-liquid separator 102 being in communication with an air inlet of the compressor 101. The inlet of the gas-liquid separator 102 may be in communication with the subcooler 103 or the indoor heat exchanger 301.

In some embodiments, the valve assembly includes a first throttle 207, a second throttle 106, a first control valve 203, a second control valve 204, a third control valve 208, and a fourth control valve 209, the first throttle 207 is disposed on a connection line between the first port 201a of the accumulator 201 and the outdoor heat exchanger 105, one end of the first control valve 203 is connected to a connection line between the first throttle 207 and the outdoor heat exchanger 105, the other end of the first control valve 203 is communicated with the indoor heat exchanger 301, the second control valve 204 is disposed on a connection line between the second port 201b of the accumulator 201 and the indoor heat exchanger 301, the third control valve 208 is disposed on a connection line between the second port 201b of the accumulator 201 and the intake port of the compressor 101, one end of the fourth control valve 209 is connected to a connection line between the discharge port of the compressor 101 and the outdoor heat exchanger 105, the other end of the fourth control valve 209 is connected to a connection line between the first throttle 207 and the outdoor heat exchanger 105, and the second throttle 106 is connected to a connection line between the outdoor heat exchanger 105 and the indoor heat exchanger 301.

In some embodiments, the refrigeration system further comprises a storage container 220, the storage container 220 is in fluid communication with the compressor 101, the outdoor heat exchanger 105 and the indoor heat exchanger 301, and the valve assembly is further configured to adjust the state of the storage container 220 by controlling the flow direction of the refrigerant and/or the on/off of the connection line, wherein the state of the storage container 220 includes a closed state, a state of storing the refrigerant and a state of releasing the refrigerant.

By providing the storage container 220, the storage container 220 can be properly opened or closed according to a refrigerant demand in the refrigeration system, and the refrigerant can be stored or released when the storage container 220 is opened.

In some embodiments, the valve assembly includes a first throttle member 207, a first control valve 203, a third control valve 208, a fourth control valve 209, a fifth control valve 221, a sixth control valve 222, a seventh control valve 223, and an eighth control valve 224, the first throttle member 207 is connected between the first port 201a of the accumulator 201 and the outdoor heat exchanger 105, one end of the first control valve 203 is connected to a connection line between the first throttle member 207 and the outdoor heat exchanger 105, the other end of the first control valve 203 is communicated with the indoor heat exchanger 301, the third control valve 208 is disposed on a connection line between the second port 201b of the accumulator 201 and the intake port of the compressor 101, one end of the fourth control valve 209 is connected to a connection line between the discharge port of the compressor 101 and the outdoor heat exchanger 105, the other end of the fourth control valve 209 is connected to a connection line between the first throttle member 207 and the outdoor heat exchanger 105, the storage container 220 has a first port 220a, a second port 220b, and a third port 220c, one end of a fifth control valve 221 is communicated with the first port 220a of the storage container 220, the other end of the fifth control valve 221 is connected to a pipe of the outdoor heat exchanger 105 connected to the first throttle 207 and the first control valve 203, respectively, one end of a sixth control valve 222 is communicated with the second port 220b of the storage container 220, the other end of the sixth control valve 222 is connected to a connecting pipe between the discharge port of the compressor 101 and the fourth control valve 209, one end of a seventh control valve 223 is communicated with the third port 220c of the storage container 220, the other end of the seventh control valve 223 is connected to a pipe of the intake port of the compressor 101 connected to the third control valve 208 and the indoor heat exchanger 301, respectively, one end of an eighth control valve 224 is communicated with the second port 220b of the storage container 220, the other end of the eighth control valve 224 is connected to the intake port of the compressor 101, and the third control valve 208 and the indoor heat exchanger 301, respectively The connected pipelines.

In some embodiments, the valve assembly further includes a fourth orifice 225 and a fifth orifice 226, the fourth orifice 225 being connected between the seventh control valve 223 and the third port 220c of the storage container 220, and the fifth orifice 226 being connected between the eighth control valve 224 and the second port 220b of the storage container 220.

In some embodiments, the valve assembly comprises a first throttle 207, a first control valve 203, a third control valve 208, a ninth control valve 227, a tenth control valve 228 and a sixth throttle 229, the first throttle 207 is connected between the first port 201a of the accumulator 201 and the outdoor heat exchanger 105, one end of the first control valve 203 is connected to a connection line between the first throttle 207 and the outdoor heat exchanger 105, the other end of the first control valve 203 is in communication with the indoor heat exchanger 301, the third control valve 208 is disposed on a connection line between the second port 201b of the accumulator 201 and the air inlet of the compressor 101, the storage tank 220 comprises a fourth port 220d and a fifth port 220e, one end of the ninth control valve 227 is in communication with the fourth port 220d of the storage tank 220, the other end of the ninth control valve 227 is connected to a connection line of the outdoor heat exchanger 105 to which the first throttle 207 and the first control valve 203 are connected, respectively, the tenth control valve is connected between the fifth port 220e and the sixth throttle 229 of the storage tank 220, and the other end of the sixth throttle 229 is connected to a connection line of the indoor heat exchanger 101 and the third control valve 301 of the indoor heat exchanger 101.

In some embodiments of the present invention, the first control valve 203, the second control valve 204 (when using an electric control valve), the third control valve 208, the fourth control valve 209, the fifth control valve 221, the sixth control valve 222, the seventh control valve 223, the eighth control valve 224, the ninth control valve 227, and the tenth control valve 228 may be implemented as an on-off valve or a proportional valve, etc.

In some embodiments of the present invention, the first throttle 207, the second throttle 106, and the third throttle 104 may be electronic expansion valves, etc. The fourth orifice 225, the fifth orifice 226, and the sixth orifice 229 may employ a capillary tube or the like.

In some embodiments of the refrigeration system provided by the present invention, the storage container 220 may be a container having the ability to store and release refrigerant, such as a liquid storage tank.

The storage container 220 is used to solve the problem of different requirements for the amount of the circulating refrigerant in each working mode of the refrigeration system. When the demand of the quantity of the circulating refrigerant is low, the circulating refrigerant can be stored through a storage container; when the demand of the circulating refrigerant quantity is high, the refrigerant stored in the storage container can be released for supplement.

When in unconventional refrigeration, the energy accumulator itself serves as an evaporator or a condenser and needs to exchange heat with a circulating refrigerant; during normal refrigeration, the circulating refrigerant does not pass through the accumulator, and the accumulator can store part of the refrigerant. Moreover, the main function of the energy accumulator is heat exchange, the design volume of the energy accumulator is related to the heat exchange requirement of the energy accumulator, the volume is limited, and the internal structures of the energy accumulator are all refrigerant pipes, so that the quantity of refrigerants stored and released by the energy accumulator is limited. And storage container for example the liquid storage pot then can be according to the difference design capacity volume of refrigerating system maximum demand circulation volume and minimum demand circulation volume, has more advantage than the energy storage ware, can realize the regulation of different demand refrigerant volumes through feed liquor, flowing back control moreover, and is more simple and convenient and easy to operate.

The utility model provides a refrigerating system passes through the state of adjusting valve subassembly, can realize conventional refrigeration, complete cold-storage, refrigeration cold-storage, supercooling cold release and condensation 5 at least kinds of mode such as cold release, moreover, storage container 220 can all have the closed condition among every mode, storage refrigerant state or release refrigerant state to satisfy user's different demands, widened refrigerating system's application range simultaneously, improved refrigerating system's the rate of utilization greatly. Moreover, the utility model discloses a refrigerating system's pipeline is retrencied, and the cost is lower.

The embodiment of the utility model provides an in the embodiment refrigerating system's control flow include:

determining an operating mode of the refrigeration system;

the actions of the valve assembly in the refrigeration system and the states of the outdoor heat exchanger 105, the indoor heat exchanger 301, and the accumulator 201 are controlled according to a preset control strategy and based on the operation mode.

At present, in order to save power resources, time-of-use electricity price policies are adopted in many cities, for example, in the peak period of electricity utilization, the electricity price is higher, so that the awareness of saving electricity of people is improved through the improvement of cost; in the time period of the electricity consumption valley, the electricity price is lower, people are guided to use the electricity resource by staggering peaks, and the situation that great pressure is caused to a power supply system is avoided.

To this end, in some embodiments, determining an operating mode of the refrigeration system includes:

in the time period when the power supply system is at a high power price, determining that the working mode of the refrigeration system is a mode corresponding to the state that the energy accumulator 201 is in a non-working state or a state of releasing cold energy;

in the period when the power supply system is at a low electricity price, the working mode of the refrigeration system is determined to be the mode corresponding to the state that the energy accumulator 201 is in a non-working state or the state of storing cold energy.

The working mode of the refrigerating system is determined according to the electricity price of the power supply system, the refrigerating capacity can be stored through the energy accumulator 201 in a low electricity price period, and the refrigerating system is set to be in a mode corresponding to the energy accumulator 201 in a non-working state or a state of releasing the refrigerating capacity in a high electricity price period, so that the refrigerating purpose is mainly or auxiliarily realized by utilizing the refrigerating capacity stored in advance by the energy accumulator 201, the working frequency of the compressor 101 is reduced, the power consumption of the refrigerating system in the high electricity price period is reduced, and the economic pressure of a user is reduced; the method is also favorable for realizing peak shifting power utilization and reducing the power supply pressure of a power supply system.

In some embodiments, the operation mode of the refrigeration system may be determined by the current demand of the user, or may be automatically determined based on a pre-stored charge criteria for the power supply system.

In some embodiments, determining the operating mode of the refrigeration system includes:

detecting whether energy is stored in the energy accumulator 201;

and determining the working mode of the refrigeration system according to the detection result.

In some embodiments, determining the operation mode of the refrigeration system according to the detection result includes:

when detecting that there is no energy in the accumulator 201, determining that the operation mode of the refrigeration system is a mode corresponding to the state that the accumulator 201 is not in operation or the state of storing cold.

When detecting that energy is stored in the energy accumulator 201, it may be determined according to the requirement that the operating mode of the refrigeration system is a mode corresponding to the state where the energy accumulator 201 is not operating, the state where cold is stored, or the state where cold is released.

When the energy in the accumulator 201 is used, the energy remaining amount in the accumulator 201 is detected in real time, and when it is detected that the energy remaining amount is close to zero, the use of the energy in the accumulator 201 is stopped.

Similarly, the same operations may be employed for the storage vessel 220 as for the accumulator 201, such as:

when detecting that no refrigerant exists in the storage container 220, determining that the storage container 220 is in a closed state and a refrigerant storage state;

when the refrigerant is detected to be stored in the storage container 220, the state of the storage container 220 may be determined to be a closed state, a refrigerant storage state, or a refrigerant release state according to a requirement.

When the storage container 220 is in a refrigerant releasing state, the refrigerant remaining amount in the storage container 220 is detected in real time, and when the refrigerant remaining amount is detected to be close to zero, the refrigerant releasing is stopped.

In some embodiments, the control flow of the refrigeration system in the embodiments of the present invention includes:

determining an operating mode of the refrigeration system;

the actions of the first, second, third, and

fourth throttles

207, 106, 203, 204, 208, and 209 and the states of the outdoor heat exchanger 105, the indoor heat exchanger 301, and the accumulator 201 in the refrigeration system are controlled according to a preset control strategy and based on the operation mode.

In some embodiments, controlling the actions of the first, second, third, and

fourth throttles

207, 106, 203, 204, 208, and 209 and the states of the outdoor heat exchanger 105, indoor heat exchanger 301, and accumulator 201 in the refrigeration system according to preset control strategies and based on the operating mode includes:

when the working mode is the normal cooling mode, the first control valve 203 and the second throttling element 106 are controlled to be opened, and the second control valve 204, the third control valve 208, the fourth control valve 209 and the first throttling element 207 are controlled to be closed;

wherein the indoor heat exchanger 301 functions as an evaporator, the outdoor heat exchanger 105 functions as a condenser, and the accumulator 201 is turned off.

In some embodiments, controlling the actions of the first, second, third, and

fourth throttles

when the working mode is the full cold accumulation mode, the third control valve 208, the first throttling member 207 and the second throttling member 106 are controlled to be opened, and the first control valve 203, the second control valve 204 and the fourth control valve 209 are controlled to be closed;

wherein the indoor heat exchanger 301 is turned off, the outdoor heat exchanger 105 functions as a condenser, and the accumulator 201 functions as an evaporator.

In some embodiments, controlling the actions of the first, second, third, and

fourth throttles

when the working mode is the refrigeration and cold accumulation mode, the first control valve 203, the third control valve 208, the first throttling element 207 and the second throttling element 106 are controlled to be opened, and the second control valve 204 and the fourth control valve 209 are controlled to be closed;

among them, the indoor heat exchanger 301 serves as an evaporator, the outdoor heat exchanger 105 serves as a condenser, and the accumulator 201 serves as an evaporator.

In some embodiments, controlling the actions of the first, second, third, and

fourth throttles

when the working mode is the supercooling cold release mode, the second control valve 204, the first throttling member 207 and the second throttling member 106 are controlled to be opened, and the first control valve 203, the third control valve 208 and the fourth control valve 209 are controlled to be closed;

among them, the indoor heat exchanger 301 serves as an evaporator, the outdoor heat exchanger 105 serves as a condenser, and the accumulator 201 serves as the subcooler 103.

In some embodiments, controlling the actions of the first, second, third, and

fourth throttles

207, 106, 203, 204, 208, and 209 and the states of the outdoor heat exchanger 105, indoor heat exchanger 301, and accumulator 201 in the refrigeration system according to a preset control strategy and based on the operating mode includes:

when the working mode is the condensing and cooling mode, the second control valve 204, the fourth control valve 209 and the first throttling element 207 are controlled to be opened, and the first control valve 203, the third control valve 208 and the second throttling element 106 are controlled to be closed;

wherein the indoor heat exchanger 301 functions as an evaporator, the outdoor heat exchanger 105 is turned off, and the accumulator 201 functions as a condenser.

the state of the storage container 220 is controlled to be a closed state, a refrigerant storage state, or a refrigerant release state according to a refrigerant demand of the refrigeration system.

In some embodiments, controlling the state of the storage container 220 to be the closed state, the refrigerant storage state or the refrigerant release state according to the refrigerant demand of the refrigeration system includes:

providing a valve assembly including a first throttle 207, a first control valve 203, a third control valve 208, a fourth control valve 209, a fifth control valve 221, a sixth control valve 222, a seventh control valve 223, an eighth control valve 224, a fourth throttle 225, and a fifth throttle 226, the first throttle 207 being connected between the first port 201a of the accumulator 201 and the outdoor heat exchanger 105, one end of the first control valve 203 being connected to a connection line between the first throttle 207 and the outdoor heat exchanger 105, the other end of the first control valve 203 being communicated with the indoor heat exchanger 301, the third control valve 208 being disposed on a connection line between the second port 201b of the accumulator 201 and the intake port of the compressor 101, one end of the fourth control valve 209 being connected to a connection line between the discharge port of the compressor 101 and the outdoor heat exchanger 105, the other end of the fourth control valve 209 being connected to a connection line between the first throttle 207 and the outdoor heat exchanger 105, the storage container 220 has a first port 220a, a second port 220b, and a third port 220c, one end of a fifth control valve 221 communicates with the first port 220a of the storage container 220, the other end of the fifth control valve 221 is connected to a pipe of the outdoor heat exchanger 105 connected to the first throttle 207 and the first control valve 203, respectively, one end of a sixth control valve 222 communicates with the second port 220b of the storage container 220, the other end of the sixth control valve 222 is connected to a connection pipe between the discharge port of the compressor 101 and the fourth control valve 209, one end of a seventh control valve 223 communicates with the third port 220c of the storage container 220, the other end of the seventh control valve 223 is connected to a pipe of the intake port of the compressor 101 connected to the third control valve 208 and the indoor heat exchanger 301, respectively, one end of an eighth control valve 224 communicates with the second port 220b of the storage container 220, the other end of the eighth control valve 224 is connected to the pipe of the intake port of the compressor 101 to which the third control valve 208 and the indoor heat exchanger 301 are connected, respectively, the fourth throttling member 225 is connected between the seventh control valve 223 and the third port 220c of the storage container 220, and the fifth throttling member 226 is connected between the eighth control valve 224 and the second port 220b of the storage container 220;

controls the fifth control valve 221, the sixth control valve 222, the seventh control valve 223, and the eighth control valve 224 to be closed to bring the storage container 220 into a closed state;

the fifth control valve 221 and the eighth control valve 224 are controlled to be opened, and the sixth control valve 222 and the seventh control valve 223 are controlled to be closed, so that the storage container 220 enters a refrigerant storage state; or

The sixth control valve 222 and the seventh control valve 223 are controlled to be opened, and the fifth control valve 221 and the eighth control valve 224 are controlled to be closed, so that the storage container 220 enters a refrigerant releasing state.

providing a valve assembly comprising a first throttle 207, a first control valve 203, a third control valve 208, a ninth control valve 227, a tenth control valve 228 and a sixth throttle 229, the first throttle 207 being connected between the first port 201a of the accumulator 201 and the outdoor heat exchanger 105, one end of the first control valve 203 being connected to a connection line between the first throttle 207 and the outdoor heat exchanger 105, the other end of the first control valve 203 being in communication with the indoor heat exchanger 301, the third control valve 208 being disposed on a connection line between the second port 201b of the accumulator 201 and the air inlet of the compressor 101, the storage tank 220 comprising a fourth port 220d and a fifth port 220e, one end of the ninth control valve 227 being in communication with the fourth port 220d of the storage tank 220, the other end of the ninth control valve 227 being connected to a connection line of the outdoor heat exchanger 105 to which the first throttle 207 and the first control valve 203 are connected, respectively, the tenth control valve 228 being connected between the fifth port 220e and the sixth throttle 229 of the storage tank 220, the other end of the sixth throttle 229 being connected to a connection line of the indoor heat exchanger 101 and the third control valve 301 of the indoor heat exchanger 101;

the ninth control valve 227 and the tenth control valve 228 are controlled to be closed to bring the storage container 220 into a closed state;

the ninth control valve 227 and the tenth control valve 228 are controlled to be opened, so that the storage container 220 enters a refrigerant storage state; or

The ninth control valve 227 is controlled to be closed, and the tenth control valve 228 is controlled to be opened, so that the storage container 220 enters a refrigerant releasing state.

The operation of the refrigeration system provided by the present invention is described below with reference to fig. 1 to 10:

as shown in fig. 1, the refrigeration system includes an outdoor unit 1, an energy storage device 2, and an indoor unit.

The outdoor unit 1 includes a compressor 101, a gas-liquid separator 102, a subcooler 103, a third throttling element 104, an outdoor heat exchanger 105, and a second throttling element 106.

An air outlet of the compressor 101 is communicated with an inlet of an outdoor heat exchanger 105, an outlet of the outdoor heat exchanger 105 is communicated with an inlet of a second throttling element 106, an outlet of the second throttling element 106 is divided into two paths, one path is communicated with the energy storage device 2 through a cooler 103, the other path is communicated with an inlet of a third throttling element 104, an outlet of the third throttling element 104 is communicated with an inlet of a gas-liquid separator 102 through the cooler 103, and an outlet of the gas-liquid separator 102 is communicated with an air inlet of the compressor 101.

There are only three connecting pipelines between the outdoor unit 1 and the energy storage device 2.

The first connection port of the energy storage device 2 is connected to a connection pipe between the discharge port of the compressor 101 and the outdoor heat exchanger 105, the second connection port is connected to the subcooler 103, and the third connection port is connected to a connection pipe between the subcooler 103 and the gas-liquid separator 102.

The energy storage apparatus 2 includes an energy storage 201, a first gas pipe 202, a first control valve 203, a second control valve 204, a first liquid pipe 205, a second liquid pipe 206, a first throttle 207, a third control valve 208, a fourth control valve 209, and a second gas pipe 210.

The accumulator 201 includes a first port 201a and a second port 201b, the first port 201a being located at an upper portion of the accumulator 201, and the second port 201b being located at a lower portion of the accumulator 201.

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 to realize cold accumulation and cold release.

The first end 201a of the accumulator 201 in the accumulator device 2 is connected to the discharge port of the compressor 101 via a first gas pipe 202 and to the liquid-side header pipe 3 via a first liquid pipe 205. The second end 201b of the accumulator 201 is connected to the inlet of the gas-liquid separator 102 via a second gas pipe 210 and to the liquid-side manifold 3 via a second liquid pipe 206. In order to switch the functions, a fourth control valve 209 (as a high-pressure gas valve) is disposed on the first gas pipe 202, a third control valve 208 (as a cold accumulation valve) is disposed on the second gas pipe 210, a second control valve 204 (as a cold release valve) is disposed on the second liquid pipe 206, and a first control valve 203 (as a bypass valve) is disposed between the connection with the first liquid pipe 205 and the connection with the second liquid pipe 206 on the liquid-side manifold 3.

The embodiment provides a multifunctional energy storage refrigeration system, which can provide energy storage and energy release services aiming at various different power load transfer scenes.

Referring to table 1, a table is shown for each operating mode and the state of each component in the valve assembly and the state of the heat exchanger.

TABLE 1 correspondence table of working mode, valve state and heat exchanger state

As shown in fig. 2, in the normal cooling mode:

the first control valve 203 and the second throttling member 106 are opened, and the second control valve 204, the third control valve 208, the fourth control valve 209 and the first throttling member 207 are closed.

The refrigerant discharged from the compressor 101 passes through the outdoor heat exchanger 105, enters the indoor unit through the liquid-side header pipe 3, evaporates in the indoor unit, and returns to the suction side of the compressor 101 through the gas-side header pipe 4 and the gas-liquid separator 102. The accumulator 201 is not used at this time, and only the normal refrigeration cycle function is realized.

As shown in fig. 3, in the full cold storage mode:

the third control valve 208, the first throttle 207 and the second throttle 106 are opened, and the first control valve 203, the second control valve 204 and the fourth control valve 209 are closed.

The refrigerant discharged from the compressor 101 is condensed by the outdoor heat exchanger 105, enters the liquid-side header pipe 3, is throttled by the first throttling element 207 via the first liquid pipe 205, enters the accumulator 201 for evaporation, and then returns to the gas-liquid separator 102 and the suction side of the compressor 101 via the second gas pipe 210 and the gas-side header pipe 4. In this mode, the indoor heat exchanger 301 is not used, the accumulator 201 serves as an evaporator, and the outdoor heat exchanger 105 serves as a condenser.

As shown in fig. 4, in the cooling cold storage mode:

the first control valve 203, the third control valve 208, the first throttle 207 and the second throttle 106 are opened, and the second control valve 204 and the fourth control valve 209 are closed.

The refrigerant discharged by the compressor 101 is condensed by the outdoor heat exchanger 105 and then enters the liquid side header pipe 3 to be divided into two paths, one path enters the energy accumulator 201 through the first throttling element 207, and flows into the second air pipe 210 after being evaporated; the other path enters an indoor heat exchanger 301 to be evaporated, and the two paths are converged at an inlet of a gas-liquid separator 102 and return to a suction side of a compressor 101. The energy accumulator 201 and the indoor heat exchanger 301 are used as evaporators at the same time, the energy accumulator 201 stores cold, and the indoor heat exchanger 301 provides cold for the indoor.

As shown in fig. 5, in the supercooling cold release mode:

the second control valve 204, the first throttle member 207 and the second throttle member 106 are opened, and the first control valve 203, the third control valve 208 and the fourth control valve 209 are closed.

The refrigerant discharged from the compressor 101 flows through the outdoor heat exchanger 105, enters the accumulator 201 through the liquid side header pipe 3 and the first throttle 207, is subcooled, flows into the indoor unit through the second liquid pipe 206 and the liquid side header pipe 3, is evaporated, and then returns to the suction side of the compressor 101 through the gas side header pipe 4 and the gas-liquid separator 102. The accumulator 201 is used as a subcooler to release cold energy to the refrigerant condensed in the outdoor heat exchanger 105, further improve the supercooling degree of the refrigerant, and then flow into an indoor unit for evaporation to improve the refrigerating capacity of the refrigerant.

As shown in fig. 6, in the condensing and cooling mode:

the second control valve 204, the fourth control valve 209, and the first throttle 207 are opened, and the first control valve 203, the third control valve 208, and the second throttle 106 are closed.

The refrigerant discharged from the compressor 101 enters the accumulator 201 through the first air pipe 202 and the first throttle 207 to be condensed, flows into the indoor unit through the second liquid pipe 206 and the liquid side header pipe 3 to be evaporated, and returns to the suction side of the compressor 101 through the gas side header pipe 4 and the gas-liquid separator 102. This mode does not use the outdoor heat exchanger 105 but uses the accumulator 201 as a condenser to provide cooling for the refrigeration cycle. Because the temperature of the cold storage material in the energy accumulator 201 is far lower than the outdoor ambient temperature, the refrigeration cycle can be operated under the condition of low pressure ratio, and the load of the compressor 101 is greatly reduced.

When the electricity price is low, the energy storage equipment carries out cold storage by using a complete cold storage mode or a refrigeration and cold storage mode; when the electricity price is in a peak, the energy storage equipment is used for supercooling and cooling, so that energy can be provided for the system, the running frequency of the compressor is reduced, the power consumption is reduced, and the running cost is reduced.

When there is a demand for a large reduction in power consumption in a short time, a condensing and cooling function may be used, that is, an outdoor heat exchanger is not used as a condenser, but an accumulator is used as the outdoor heat exchanger. Because the temperature of the energy storage material in the energy accumulator after storing the cold energy is lower and is far lower than the outdoor environment temperature, the compressor does not need to provide overhigh pressure, the system can operate under the condition of low compression ratio, and the energy consumption of the system 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, so that the heat exchange efficiency is improved.

In the embodiment shown in fig. 2 to 6, the second control valve 204 is a check valve, and therefore, it is not necessary to control the open/close state of the second control valve 204.

As shown in fig. 7, in the first embodiment:

the second control valve 204 is a solenoid valve to ensure tighter control of the make and break of the flow path.

Referring to table 1, in the normal cooling mode, the full cold storage mode, and the cooling cold storage mode, the second control valve 204 is in a closed state; in the sub-cooling and condensing cooling modes, the second control valve 204 is in an open state.

As shown in fig. 8, in the second embodiment:

compared with the embodiment shown in fig. 1, the second embodiment omits the first air pipe 202, and the system comprises a normal refrigeration mode, a full cold accumulation mode, a refrigeration cold accumulation mode, a supercooling cold release mode and the like, and is suitable for a scene without operating a condensation cold release mode.

As shown in fig. 9, in the third embodiment:

the refrigeration system further includes a storage container 220, a fifth control valve 221, a sixth control valve 222, a seventh control valve 223, an eighth control valve 224, a fourth throttle 225, and a fifth throttle 226.

The storage container 220 has a first interface 220a, a second interface 220b, and a third interface 220c. The first and

second ports

220a and 220b are located at the top of the storage container 220, and the third port 220c is located at the lower left side of the storage container 220.

One end of a fifth control valve 221 is connected to the first port 220a of the storage container 220, the other end of the fifth control valve 221 is connected to a pipe of the outdoor heat exchanger 105 connected to the first throttling part 207 and the first control valve 203, respectively, one end of a sixth control valve 222 is connected to the second port 220b of the storage container 220, the other end of the sixth control valve 222 is connected to a connecting pipe between the discharge port of the compressor 101 and the fourth control valve 209, one end of a seventh control valve 223 is connected to the third port 220c of the storage container 220, the other end of the seventh control valve 223 is connected to a pipe of the intake port of the compressor 101 connected to the third control valve 208 and the indoor heat exchanger 301, respectively, one end of an eighth control valve 224 is connected to the second port 220b of the storage container 220, the other end of the eighth control valve 224 is connected to a pipe of the intake port of the compressor 101 connected to the third control valve 208 and the indoor heat exchanger 301, respectively, a fourth throttling part 225 is connected between the seventh control valve 223 and the third port 220c of the storage container 220, and a pipe 226 b of the storage container 220, and the fifth throttling part 226 is connected to a pipe between the eighth control valve 220.

On the basis of the embodiment of the refrigeration system shown in fig. 2 to 6, the storage container 220 with a liquid storage function is additionally arranged, and the refrigerant quantity in different operation modes is controlled by storing and releasing the refrigerant through the storage container 220, so that the circulating refrigerant quantity of the system is consistent with the refrigerant demand quantity in different operation modes, and the optimal heat exchange effect is exerted.

The storage container 220 has 3 states in total: the system does not work, stores the refrigerant and releases the refrigerant, and the 3 states can be used in the conventional refrigeration, complete cold accumulation and other modes of different system modes.

When the storage tank 220 is not operating, the fifth control valve 221, the sixth control valve 222, the seventh control valve 223, and the eighth control valve 224 are all closed.

As shown in fig. 10, when it is determined that the storage container 220 needs to be started to store the refrigerant in the current operation mode, the fifth control valve 221 and the eighth control valve 224 are opened, and the sixth control valve 222 and the seventh control valve 223 are closed. The eighth control valve 224 is opened to make the tank pressure of the storage container 220 in a low pressure state, and the fifth control valve 221 is opened to make the refrigerant inlet pipe of the storage container 220 in a medium pressure section, and the refrigerant enters the storage container 220 under the action of pressure difference.

As shown in fig. 11, when it is determined that the storage container 220 needs to be activated to discharge the refrigerant in the current operation mode, the fifth control valve 221 and the eighth control valve 224 are closed, and the sixth control valve 222 and the seventh control valve 223 are opened. The seventh control valve 223 is opened to make the outlet end of the storage container 220 in a low pressure state, the sixth control valve 222 is opened to make the pressure of the tank of the storage container 220 in a high pressure state, and the refrigerant in the tank is discharged out of the tank under the action of gravity and pressure difference and enters the pipeline circulation.

As shown in fig. 12, in the fourth embodiment:

this embodiment also adds a storage container 220 to the embodiment of the refrigeration system shown in fig. 2 to 6, but the storage container 220 is disposed in a manner different from that of the embodiment shown in fig. 9.

In this embodiment, the storage container 220 has two interfaces, a fourth interface 220d and a fifth interface 220e. The fourth ports 220d are located at the lower left portion of the storage container 220, and the fifth ports 220e are located at the upper right portion of the storage container 220.

One end of the ninth control valve 227 communicates with the fourth port 220d of the storage container 220, the other end of the ninth control valve 227 is connected to a pipe of the outdoor heat exchanger 105 to which the first orifice 207 and the first control valve 203 are connected, respectively, the tenth control valve 228 is connected between the fifth port 220e and the sixth orifice 229 of the storage container 220, and the other end of the sixth orifice 229 is connected to a pipe of the intake port of the compressor 101 to which the third control valve 208 and the indoor heat exchanger 301 are connected, respectively.

In this embodiment, the storage container 220 has 3 states in total: the refrigerating system does not work, stores the refrigerant and releases the refrigerant, and the 3 states can be used under the conditions of conventional refrigeration, complete cold accumulation and the like of different system modes.

When the storage tank 220 is not operating, both the ninth control valve 227 and the tenth control valve 228 are closed.

As shown in fig. 13, when it is determined that the storage container 220 needs to be started to store the refrigerant in the current operation mode, both the ninth control valve 227 and the tenth control valve 228 are opened, and the refrigerant enters the storage container 220 under the action of the pressure difference.

As shown in fig. 14, when it is determined that the storage container 220 needs to be started to release the refrigerant in the current operation mode, the tenth control valve 228 is closed, the ninth control valve 227 is opened, and the refrigerant inside the tank is discharged out of the tank under the action of gravity and pressure difference and enters the pipeline circulation.

The embodiment of the refrigeration system provided by the utility model can store energy in the off-peak electricity price period and release energy in the peak electricity price period, thereby reducing the power consumption of the air conditioner at the moment, realizing 'peak clipping and valley filling' of electric power and reducing the running cost of the air conditioner; and 5 functions of cold accumulation, cold release and the like of the single-cold refrigerating system can be realized by switching pipelines and valves, the application range of the energy storage system is widened, and the availability of the energy storage system is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the utility model discloses a do not deviate from under the prerequisite of the principle, still can be right the utility model discloses a specific embodiment modifies or carries out the equivalent replacement to some technical features, and these are modified and should be covered with the equivalent replacement in the middle of the technical scheme scope of the utility model.

Claims

1. A refrigeration system, comprising:

a compressor (101);

an outdoor heat exchanger (105);

an indoor heat exchanger (301);

an accumulator (201), a first port (201 a) of the accumulator (201) communicating with the discharge port of the compressor (101) and the outdoor heat exchanger (105), respectively, and a second port (201 b) of the accumulator (201) communicating with the indoor heat exchanger (301) and the intake port of the compressor (101), respectively; and

the valve assembly is connected with the compressor (101), the outdoor heat exchanger (105), the indoor heat exchanger (301) and the energy accumulator (201), the valve assembly is configured to control the flow direction of a refrigerant and/or the on-off of a connecting pipeline so as to adjust the states of the outdoor heat exchanger (105), the indoor heat exchanger (301) and the energy accumulator (201) and realize the switching of the refrigerating system among different working modes, and the states of the energy accumulator (201) comprise a non-working state, a cold energy storage state and a cold energy releasing state.

2. A refrigeration system according to claim 1, characterized in that the direction of flow of the cooling medium in the accumulator (201) when the accumulator (201) is in the state of cold storage is the same as the direction of flow of the cooling medium in the accumulator (201) when the accumulator (201) is in the state of cold release.

3. The refrigeration system according to claim 1, wherein the valve assembly comprises a first throttle member (207), the first throttle member (207) being arranged on a connection line between the first port (201 a) of the accumulator (201) and the outdoor heat exchanger (105).

4. A refrigeration system according to claim 3, wherein the valve assembly comprises a first control valve (203), one end of the first control valve (203) being connected to a connection line between the first throttle member (207) and the outdoor heat exchanger (105), the other end of the first control valve (203) being in communication with the indoor heat exchanger (301).

5. A refrigeration system according to claim 1, wherein the valve assembly comprises a second control valve (204), the second control valve (204) being arranged in a connection line between the second port (201 b) of the accumulator (201) and the indoor heat exchanger (301).

6. A refrigeration system according to claim 5, characterized in that the second control valve (204) comprises an electrically controlled valve or a one-way valve, the inlet of which communicates with the second port (201 b) of the accumulator (201).

7. The refrigeration system according to claim 1, wherein the valve assembly further comprises a third control valve (208), the third control valve (208) being arranged on a connection line between the second port (201 b) of the accumulator (201) and the inlet of the compressor (101).

8. A refrigerating system according to claim 3, wherein said valve assembly further comprises a fourth control valve (209), one end of said fourth control valve (209) being connected to a connection line between a discharge port of said compressor (101) and said outdoor heat exchanger (105), and the other end of said fourth control valve (209) being connected to a connection line between said first throttle member (207) and said outdoor heat exchanger (105).

9. The refrigeration system according to claim 1, wherein the valve assembly further comprises a second throttle member (106), the second throttle member (106) being connected to a connection line between the outdoor heat exchanger (105) and the indoor heat exchanger (301).

10. The refrigerating system of claim 9, further comprising a subcooler (103) disposed between the outdoor heat exchanger (105) and the indoor heat exchanger (301), and wherein the subcooler (103) is in communication with an air inlet of the compressor (101), and wherein the second throttling element (106) is disposed between the outdoor heat exchanger (105) and the subcooler (103).

11. The refrigeration system of claim 10, wherein the valve assembly further comprises a third throttling member (104), the third throttling member (104) being disposed between the second throttling member (106) and the subcooler (103), and a port of the subcooler (103) communicating with the third throttling member (104) and a port of the subcooler (103) communicating with the intake of the compressor (101) communicate through an internal conduit of the subcooler (103).

12. The refrigeration system as claimed in claim 1, wherein the valve assembly includes a first throttle (207), a second throttle (106), a first control valve (203), a second control valve (204), a third control valve (208) and a fourth control valve (209), the first throttle (207) is disposed on a connection line between the first port (201 a) of the accumulator (201) and the outdoor heat exchanger (105), one end of the first control valve (203) is connected to a connection line between the first throttle (207) and the outdoor heat exchanger (105), the other end of the first control valve (203) is communicated with the indoor heat exchanger (301), the second control valve (204) is disposed on a connection line between the second port (201 b) of the accumulator (201) and the indoor heat exchanger (301), the third control valve (208) is disposed on a connection line between the second port (201 b) of the accumulator (201) and the inlet of the compressor (101), the fourth control valve (209) is connected to a connection line between the second port (201 b) of the outdoor heat exchanger (105) and the other end of the outdoor heat exchanger (105), the fourth control valve (209) is connected to a connection line between the first port (207) of the outdoor heat exchanger (105) and the connection line between the second port (105), the second throttling member (106) is connected to a connection line between the outdoor heat exchanger (105) and the indoor heat exchanger (301).

13. The refrigeration system according to any one of claims 1 to 12, further comprising a storage container (220), wherein the storage container (220) is in fluid communication with the compressor (101), the outdoor heat exchanger (105) and the indoor heat exchanger (301), and wherein the valve assembly is further configured to adjust the state of the storage container (220) by controlling the flow direction of the refrigerant and/or the on/off of the connecting line, wherein the state of the storage container (220) comprises a closed state, a refrigerant storage state and a refrigerant release state.

14. A refrigeration system according to claim 13, characterized in that the valve assembly comprises a first throttle (207), a first control valve (203), a third control valve (208), a fourth control valve (209), a fifth control valve (221), a sixth control valve (222), a seventh control valve (223) and an eighth control valve (224), the first throttle (207) being connected between the first port (201 a) of the accumulator (201) and the outdoor heat exchanger (105), one end of the first control valve (203) being connected to the connection between the first throttle (207) and the outdoor heat exchanger (105), the other end of the first control valve (203) being in communication with the indoor heat exchanger (301), the third control valve (208) being arranged in connection between the second port (201 b) of the accumulator (201) and the inlet of the compressor (101), one end of the fourth control valve (209) being connected to the connection between the outlet of the compressor (101) and the outdoor heat exchanger (105), the third control valve (220) being connected to the connection between the third port (209 a) of the outdoor heat exchanger (105) and the third connection between the third port (220 a) of the outdoor heat exchanger (105), the connection between the third connection (220 a) and the third connection (220) and the connection between the storage tank (220), one end of the fifth control valve (221) is communicated with the first port (220 a) of the storage container (220), the other end of the fifth control valve (221) is connected to a pipeline of the outdoor heat exchanger (105) connected to the first throttle (207) and the first control valve (203), respectively, one end of the sixth control valve (222) is communicated with the second port (220 b) of the storage container (220), the other end of the sixth control valve (222) is connected to a connection pipeline between the discharge port of the compressor (101) and the fourth control valve (209), one end of the seventh control valve (223) is communicated with the third port (220 c) of the storage container (220), the other end of the seventh control valve (223) is connected to a pipeline of the intake port of the compressor (101) connected to the third control valve (208) and the indoor heat exchanger (301), respectively, one end of the eighth control valve (224) is connected to the second port (220 b) of the storage container (220), and the other end of the eighth control valve (224) is connected to a pipeline of the intake port of the compressor (208) and the indoor heat exchanger (301), respectively.

15. The refrigeration system of claim 14, wherein the valve assembly further comprises a fourth orifice (225) and a fifth orifice (226), the fourth orifice (225) being connected between the seventh control valve (223) and the third port (220 c) of the storage container (220), the fifth orifice (226) being connected between the eighth control valve (224) and the second port (220 b) of the storage container (220).

16. A refrigeration system according to claim 13, wherein the valve assembly comprises a first throttle (207), a first control valve (203), a third control valve (208), a ninth control valve (227), a tenth control valve (228) and a sixth throttle (229), the first throttle (207) being connected between the first port (201 a) of the accumulator (201) and the outdoor heat exchanger (105), one end of the first control valve (203) being connected to a connection line between the first throttle (207) and the outdoor heat exchanger (105), the other end of the first control valve (203) being in communication with the indoor heat exchanger (301), the third control valve (208) being arranged on a connection line between the second port (201 b) of the accumulator (201) and the air inlet of the compressor (101), the storage vessel (220) comprising a fourth interface (220 d) and a fifth interface (220 e), one end of the ninth control valve (227) being connected to the fourth interface (220 d) of the storage vessel (220) and the other end of the ninth control valve (227) being connected to the ninth control valve (220 d) and the ninth control valve (229 e), the ninth control valve (207) being connected to the connection line of the ninth and the ninth interface (220 d) of the outdoor heat exchanger (105), the ninth control valve (229) The other end of the sixth orifice (229) is connected to a pipe of the intake port of the compressor (101) to which the third control valve (208) and the indoor heat exchanger (301) are connected, respectively.