CN218993559U

CN218993559U - Cooling system

Info

Publication number: CN218993559U
Application number: CN202223206060.8U
Authority: CN
Inventors: 王刚; 张院佳; 李绞
Original assignee: Zhejiang Zhengtai Energy Efficiency Technology Co ltd
Current assignee: Zhejiang Zhengtai Energy Efficiency Technology Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-09
Anticipated expiration: 2032-11-30

Abstract

The utility model belongs to the technical field of air conditioners, and discloses a cooling system which comprises a cold conveying unit, a cold releasing unit and a double-evaporator cryogenic low-temperature device, wherein the cold conveying unit is connected with the tail end of an air conditioner, cold conveying medium is circulated in the cold conveying unit and used for conveying cold energy to the tail end of the air conditioner, the cold releasing unit exchanges heat with the cold conveying unit, cold accumulating medium is circulated in the cold releasing unit, the cold releasing unit comprises a regulating valve group, and the cold accumulating medium and the cold conveying medium can exchange heat through the regulating valve group so as to reduce the temperature of the cold conveying medium. According to the cooling system provided by the utility model, the regulating valve group and the electric valve group are regulated, so that the cooling medium has multiple cooling methods, and the cooling medium is used for delivering the cooling capacity to the tail end of the air conditioner, so that the cooling system can be used for delivering the cooling capacity to the tail end of the air conditioner in multiple heat exchange modes, and the temperature requirements of multiple application scenes can be met.

Description

Cooling system

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a cooling system.

Background

The ice cold-storage air-conditioning technology is an energy-saving technology for utilizing night power grid low-valley electric power to operate a refrigerator for refrigeration, storing the ice in the form of ice and melting the ice to provide air-conditioning cold when the power consumption is high in daytime. The method has a series of advantages of transferring peak power load, improving the primary energy utilization efficiency of the power plant, reducing the capacity of air conditioning equipment, reducing the running cost of the air conditioner and improving the quality of the air conditioner.

At present, the ice cold storage technology in the traditional sense can only achieve the cold supply temperature of 1-1.5 ℃ at the lowest, is mainly applied to the field of building comfort air conditioning, and cannot be utilized in the application field of lower temperature, such as various refrigeration houses, low-temperature refrigeration vehicles and the like, because the cold supply temperature is lower than 0 ℃. In addition, the ice cold accumulation technology in the traditional sense is only suitable for application scenes with small-range temperature, and cannot meet the temperature requirements of various application scenes.

Disclosure of Invention

The utility model aims to provide a cooling system which can meet the temperature requirements of various application scenes.

To achieve the purpose, the utility model adopts the following technical scheme:

there is provided a cooling system comprising:

the cold conveying unit is connected with the tail end of the air conditioner, and cold conveying medium is circulated in the cold conveying unit and used for conveying cold to the tail end of the air conditioner;

the cold releasing unit exchanges heat with the cold conveying unit, cold storage medium circulates in the cold releasing unit, and comprises a regulating valve group, and the cold storage medium and the cold conveying medium can exchange heat through regulating the regulating valve group so as to reduce the temperature of the cold conveying medium;

the double-evaporator cryogenic low-temperature device is respectively in heat exchange with the cold conveying unit and the cold releasing unit, a refrigerant circulates in the double-evaporator cryogenic low-temperature device, the double-evaporator cryogenic low-temperature device comprises an electric valve group, and the electric valve group is adjusted to enable the refrigerant to exchange heat with a cold conveying medium to reduce the temperature of the cold conveying medium or exchange heat with a cold accumulating medium to reduce the temperature of the cold accumulating medium.

Optionally, the double-evaporator cryogenic low-temperature device further comprises a first low-temperature compressor, a first condenser, a first throttle valve and a first evaporator which are sequentially and circularly connected; wherein,,

the first refrigerant can circulate among the first low-temperature compressor, the first condenser, the first throttle valve and the first evaporator in sequence, the cold transfer medium can flow through the first evaporator, and the cold transfer medium can exchange heat with the first refrigerant at the first evaporator.

Optionally, the double-evaporator cryogenic low-temperature device further comprises a second evaporator, wherein the first refrigerant in the second evaporator can exchange heat with the cold storage medium in the cold releasing unit;

the first interface of the second evaporator is communicated with the first low-temperature compressor and the first evaporator, the second interface of the second evaporator is communicated with the first throttle valve and the first evaporator, and the first refrigerant can circulate among the first low-temperature compressor, the first condenser, the first throttle valve and the first evaporator sequentially or circulate among the first low-temperature compressor, the first condenser, the first throttle valve and the second evaporator sequentially by adjusting the electric valve group.

Optionally, the electric valve group further includes:

the first end of the first electric valve is communicated with the first throttle valve, the second end of the first electric valve is communicated with the first evaporator, and the first throttle valve and the first evaporator can be opened and closed through the opening and closing of the first electric valve;

the first end of the second electric valve is communicated with the second interface of the second evaporator, the second end of the second electric valve is communicated with the first end of the first electric valve and the first throttle valve, and the first throttle valve and the second evaporator can be opened and closed through the second electric valve.

Optionally, the cold releasing unit further comprises a cryogenic ice storage device, an ice melting pump and an ice melting transducer; wherein,,

the liquid outlet of the deep cooling ice storage device is communicated with the liquid inlet of the ice melting pump, the liquid outlet of the ice melting pump is communicated with the liquid inlet of the primary side of the ice melting transducer, and the liquid outlet of the primary side of the ice melting transducer is communicated with the liquid inlet of the deep cooling ice storage device;

the double-evaporator cryogenic low-temperature device can reduce the temperature of the cold storage medium in the cryogenic ice storage device;

the cold storage medium can circularly flow between the cryogenic ice storage device and the primary side of the ice melting transducer under the driving of the ice melting pump by adjusting the adjusting valve group;

and a liquid inlet and a liquid outlet on the secondary side of the ice melting transducer are communicated with the cold conveying unit, and the cold conveying medium can exchange heat with the cold storage medium in the ice melting transducer.

Optionally, the regulating valve group comprises a first regulating valve and a second regulating valve; wherein,,

the first end of the first regulating valve is communicated with the liquid outlet of the ice melting pump, and the second end of the first regulating valve is communicated with the liquid inlet at the primary side of the ice melting transducer;

the first end of the second regulating valve is communicated with the liquid outlet of the ice melting pump and the first end of the first regulating valve, and the second end of the second regulating valve is communicated with the liquid outlet of the primary side of the ice melting transducer and the liquid inlet of the cryogenic ice storage device.

Optionally, the cold conveying unit comprises a water collector, a water separator and a first cold supply circulating pump; wherein,,

the liquid outlet of the water collector is communicated with the liquid inlet of the first cold supply circulating pump, the liquid outlet of the first cold supply circulating pump is communicated with the liquid inlet of the double-evaporator cryogenic low-temperature device, the liquid outlet of the double-evaporator cryogenic low-temperature device is communicated with the liquid inlet of the secondary side of the ice melting transducer, the liquid outlet of the secondary side of the ice melting transducer is communicated with the liquid inlet of the water separator, and the water separator is connected with the tail end of the air conditioner;

the first cold supply circulating pump can enable the cold conveying medium to flow from the water collector to the water separator.

Optionally, the cold conveying unit further comprises a second cold supply circulating pump and a base load refrigerating device; wherein,,

the liquid inlet of the second cold supply circulating pump is communicated with the liquid outlet of the water collector and the liquid inlet of the first cold supply circulating pump, and the liquid outlet of the second cold supply circulating pump is communicated with the liquid inlet of the base load refrigerating device;

the liquid outlet of the base-load refrigerating device is communicated with the liquid outlet of the first cold supply circulating pump and the liquid inlet of the double-evaporator cryogenic low-temperature device, or is communicated with the liquid outlet of the secondary side of the ice melting transducer and the liquid inlet of the water separator, and the base-load refrigerating device can reduce the temperature of a cold transmission medium.

Optionally, the cold conveying unit further comprises a third electric valve and a fourth electric valve; wherein,,

the first end of the third electric valve and the first end of the fourth electric valve are communicated with the liquid outlet of the base load refrigerating device;

the second end of the third electric valve is communicated with a liquid outlet on the secondary side of the ice melting transducer and a liquid inlet of the water separator;

the second end of the fourth electric valve is communicated with the liquid outlet of the first cold supply circulating pump and the liquid inlet of the double-evaporator cryogenic low-temperature device.

Optionally, the cold accumulation media are inorganic phase change media or organic phase change media, and the cold transmission media are inorganic salt solutions.

The beneficial effects are that:

according to the cooling system provided by the utility model, the first refrigerant and/or the cold storage medium exchange heat with the cold transmission medium by adjusting the adjusting valve group and the electric valve group so as to reduce the temperature of the cold transmission medium, so that the cold transmission medium has a plurality of cooling methods, and the cold transmission medium transmits the cold to the tail end of the air conditioner, so that the cooling system can transmit the cold to the tail end of the air conditioner in a plurality of heat exchange modes, and the temperature requirements of a plurality of application scenes can be met. In addition, the first refrigerant and the cold storage medium can exchange heat through adjusting the electric valve group so as to reduce the temperature of the cold storage medium to achieve the purpose of ice storage, so that the cold storage medium has enough cold for the work of a cold supply system.

Drawings

Fig. 1 is a schematic layout diagram of a cooling system according to the present utility model.

In the figure:

100. a cold conveyance unit; 110. a water collector; 120. a water separator; 130. a first cooling circulation pump; 140. a second cooling circulation pump; 150. a base-load refrigeration device; 151. a second cryogenic compressor; 152. a second condenser; 153. a second throttle valve; 154. a third evaporator; 161. a third electrically operated valve; 162. a fourth electrically operated valve;

200. a cooling unit; 210. a cryogenic ice storage device; 220. an ice melting pump; 230. an ice-melting transducer; 241. a first regulating valve; 242. a second regulating valve;

300. a double-evaporator cryogenic low-temperature device; 310. a first cryogenic compressor; 320. a first condenser; 330. a first throttle valve; 340. a first evaporator; 350. a second evaporator; 361. a first electrically operated valve; 362. and a second electrically operated valve.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Referring to fig. 1, the present embodiment provides a cooling system including a cold conveyance unit 100, a cool release unit 200, and a double-evaporator cryogenic device 300.

The cold conveying unit 100 is connected to the air conditioner end, and a cold conveying medium is circulated in the cold conveying unit 100 and used for conveying cold to the air conditioner end.

The cold releasing unit 200 exchanges heat with the cold conveying unit 100, the cold accumulating medium circulates in the cold releasing unit 200, the cold releasing unit 200 comprises an adjusting valve group, and the cold accumulating medium and the cold conveying medium can exchange heat through the adjusting valve group so as to reduce the temperature of the cold conveying medium.

The double-evaporator cryogenic low temperature device 300 exchanges heat with the cold conveying unit 100 and the cold releasing unit 200 respectively, the refrigerant circulates in the double-evaporator cryogenic low temperature device 300, the double-evaporator cryogenic low temperature device 300 comprises an electric valve group, and the refrigerant can exchange heat with the cold conveying medium to reduce the temperature of the cold conveying medium or exchange heat with the cold accumulating medium to reduce the temperature of the cold accumulating medium by adjusting the electric valve group.

In this embodiment, the adjusting valve group and the electric valve group are adjusted to enable the first refrigerant and/or the cold storage medium to exchange heat with the cold transmission medium so as to reduce the temperature of the cold transmission medium, so that the cold transmission medium has multiple cooling methods, and the cold transmission medium transmits the cold to the tail end of the air conditioner, so that the cold supply system can transmit the cold to the tail end of the air conditioner through multiple heat exchange modes, and the temperature requirements of multiple application scenes can be met.

It is worth mentioning that the cold supply system can make the first refrigerant and the cold storage medium exchange heat through adjusting the electric valve group so as to reduce the temperature of the cold storage medium to achieve the purpose of ice storage, so that the cold storage medium has enough cold for the cold supply system to work.

In this embodiment, the cold storage medium is an organic cold storage medium, and the organic cold storage medium includes but is not limited to glycol solution, methanol solution, glycine solution, paraffin-based solution, etc. with different concentration ratios.

Further, the cold accumulation medium can also be an inorganic cold accumulation medium added with corrosion inhibitors, and the inorganic cold accumulation medium comprises but is not limited to sodium chloride solution, calcium chloride solution, magnesium chloride solution, barium chloride solution and the like with different concentration ratios.

In this embodiment, the cold transfer medium may be an inorganic salt solution, including but not limited to sodium chloride solution, calcium chloride solution, magnesium chloride solution, barium chloride solution, etc. with different concentration ratios.

In this embodiment, the dual-evaporator cryogenic device 300 further comprises a first cryogenic compressor 310, a first condenser 320, a first throttle valve 330 and a first evaporator 340, which are sequentially and circularly connected; the first refrigerant can circulate among the first low temperature compressor 310, the first condenser 320, the first throttle valve 330 and the first evaporator 340 in sequence, the cold transfer medium can flow through the first evaporator 340, and the cold transfer medium can exchange heat with the first refrigerant at the first evaporator 340. In this embodiment, the first condenser 320 cools the high-pressure and high-temperature first refrigerant from the first low-temperature compressor 310 to high pressure and low temperature, and the high-pressure and low-temperature first refrigerant is atomized in the first throttle valve 330 and then exchanges heat with the cold-transferring medium in the first evaporator 340, so that the heat release temperature of the cold-transferring medium is reduced, and the first refrigerant absorbs heat and evaporates and flows to the first low-temperature compressor 310 to form a cycle.

Further, the dual-evaporator cryogenic device 300 further includes a second evaporator 350, and the first refrigerant in the second evaporator 350 can exchange heat with the cold storage medium in the cold release unit 200. Specifically, the first interface of the second evaporator 350 is disposed in communication with the first low temperature compressor 310 and the first evaporator 340, and the second interface of the second evaporator 350 is disposed in communication with the first throttle valve 330 and the first evaporator 340, that is, the first evaporator 340 and the second evaporator 350 are connected in parallel between the first low temperature compressor 310 and the first throttle valve 330, and the first refrigerant can circulate between the first low temperature compressor 310, the first condenser 320, the first throttle valve 330 and the first evaporator 340 in sequence or circulate between the first low temperature compressor 310, the first condenser 320, the first throttle valve 330 and the second evaporator 350 in sequence by adjusting the electric valve bank. In this embodiment, when the first refrigerant flows in a circulating manner among the first low temperature compressor 310, the first condenser 320, the first throttle valve 330 and the second evaporator 350 in sequence, the first condenser 320 cools the high-pressure and high-temperature first refrigerant from the first low temperature compressor 310 to high pressure and low temperature, the high-pressure and low-temperature first refrigerant is atomized in the first throttle valve 330 and then exchanges heat with the cold storage medium at the second evaporator 350, and the cold storage medium condenses into ice after releasing latent heat, thereby realizing ice storage, and the first refrigerant absorbs heat and evaporates and flows to the first low temperature compressor 310 to form a circulation.

The connection manner of the first low temperature compressor 310, the first condenser 320, the first throttle valve 330, the first evaporator 340 and the second evaporator 350 is the prior art, and will not be described herein in detail.

In this embodiment, the electric valve set includes a first electric valve 361 and a second electric valve 362. The first end of the first electrically operated valve 361 is disposed in communication with the first throttle valve 330, and the second end of the first electrically operated valve 361 is disposed in communication with the first evaporator 340, that is, the first electrically operated valve 361 is connected in series between the first throttle valve 330 and the first evaporator 340, and the first throttle valve 330 and the first evaporator 340 can be opened and closed by opening and closing the first electrically operated valve 361. Further, the first end of the second electrically operated valve 362 is connected to the second port of the second evaporator 350, the second end of the second electrically operated valve 362 is connected to the first end of the first electrically operated valve 361 and the first throttle 330, and the first throttle 330 and the second evaporator 350 can be opened and closed by the second electrically operated valve 362. In the present embodiment, the first refrigerant atomized in the first throttle valve 330 flows to the first evaporator 340 or the second evaporator 350 by controlling the opening and closing of the first electrically operated valve 361 and the second electrically operated valve 362, so that the first refrigerant circulates between the first low temperature compressor 310, the first condenser 320, the first throttle valve 330 and the first evaporator 340 or between the first low temperature compressor 310, the first condenser 320, the first throttle valve 330 and the second evaporator 350.

In this embodiment, the cooling unit 200 further includes a cryogenic ice storage device 210, an ice melting pump 220, and an ice melting transducer 230; the liquid outlet of the cryogenic ice storage device 210 is communicated with the liquid inlet of the ice melting pump 220, the liquid outlet of the ice melting pump 220 is communicated with the liquid inlet of the primary side of the ice melting transducer 230, and the liquid outlet of the primary side of the ice melting transducer 230 is communicated with the liquid inlet of the cryogenic ice storage device 210, namely the cryogenic ice storage device 210, the ice melting pump 220 and the ice melting transducer 230 are sequentially and circularly connected.

Specifically, the cryogenic ice storage device 210 exchanges heat with the dual-evaporator cryogenic low temperature device 300, a cold storage medium is disposed in the cryogenic ice storage device 210, and the dual-evaporator cryogenic low temperature device 300 can reduce the temperature of the cold storage medium in the cryogenic ice storage device 210. In this embodiment, the second evaporator 350 is immersed in the cold storage medium of the ice-storage device 210, so that the cold storage medium exchanges heat with the first refrigerant in the second evaporator 350 in the ice-storage device 210, and the cold storage medium releases latent heat to condense into ice, thereby realizing ice storage.

Further, the cold storage medium can circulate between the cryogenic ice storage device 210 and the primary side of the ice melting transducer 230 under the driving of the ice melting pump 220 by adjusting the adjusting valve group, the liquid inlet and the liquid outlet of the secondary side of the ice melting transducer 230 are communicated with the cold conveying unit 100, and the cold conveying medium can exchange heat with the cold storage medium in the ice melting transducer 230 to reduce the temperature of the cold conveying medium, so that the purpose of continuously cooling the cold conveying medium is realized.

In this embodiment, the valve block includes a first valve 241 and a second valve 242. The first end of the first adjusting valve 241 is connected to the liquid outlet of the ice melting pump 220, and the second end of the first adjusting valve 241 is connected to the liquid inlet of the primary side of the ice melting transducer 230, that is, the first adjusting valve 241 is connected in series between the ice melting pump 220 and the ice melting transducer 230.

Further, a first end of the second regulating valve 242 is communicated with a liquid outlet of the ice melting pump 220 and a first end of the first regulating valve 241, and a second end of the second regulating valve 242 is communicated with a liquid outlet of the primary side of the ice melting transducer 230 and a liquid inlet of the cryogenic ice storage device 210. In this embodiment, the opening of the first adjusting valve 241 and the second adjusting valve 242 is adjusted to adjust the flow rate of the cold storage medium flowing through the ice melting transducer 230, so as to control the heat exchange amount of the cold storage medium and the cold transfer medium, thereby making the cold supply system suitable for more temperature requirements.

In the present embodiment, the cold conveyance unit 100 includes a water collector 110, a water separator 120, and a first cold circulation pump 130. The liquid outlet of the water collector 110 is communicated with the liquid inlet of the first cooling circulation pump 130, the liquid outlet of the first cooling circulation pump 130 is communicated with the liquid inlet of the double-evaporator cryogenic low-temperature device 300, the liquid outlet of the double-evaporator cryogenic low-temperature device 300 is communicated with the liquid inlet of the secondary side of the ice melting transducer 230, the liquid outlet of the secondary side of the ice melting transducer 230 is communicated with the liquid inlet of the water separator 120, the water separator 120 is connected with the tail end of an air conditioner, and the first cooling circulation pump 130 can enable a cold transfer medium to flow from the water collector 110 to the water separator 120. In this embodiment, under the action of the first cooling circulation pump 130, the cold-transporting medium in the water collector 110 flows into the water separator 120, and the cold-transporting medium in the water separator 120 exchanges heat with the air conditioner end and then flows into the water collector 110 to form circulation.

Specifically, the liquid inlet and the liquid outlet of the dual-evaporator cryogenic device 300 are both communicated with the first evaporator 340, so that the cold transfer medium can flow through the first evaporator 340.

In this embodiment, the cold conveying unit 100 further includes a second cooling circulation pump 140 and a base-load refrigeration device 150, and the base-load refrigeration device 150 can reduce the temperature of the cold conveying medium. Wherein, the liquid inlet of the second cooling circulation pump 140 is communicated with the liquid outlet of the water collector 110 and the liquid inlet of the first cooling circulation pump 130, and the liquid outlet of the second cooling circulation pump 140 is communicated with the liquid inlet of the base-load refrigerating device 150; the liquid outlet of the base-load refrigerating device 150 is communicated with the liquid outlet of the first cooling circulation pump 130 and the liquid inlet of the double-evaporator cryogenic low-temperature device 300, or is communicated with the liquid outlet of the secondary side of the ice melting transducer 230 and the liquid inlet of the water separator 120. In this embodiment, the second cooling circulation pump 140 and the base-load refrigeration device 150 are configured to enable the cold conveying unit 100 to self-reduce the temperature of the cold conveying medium, so that the cooling system can be suitable for application scenarios with a wider range of temperatures.

Further, the cold conveyance unit 100 further includes a third electric valve 161 and a fourth electric valve 162. Wherein, the first end of the third electric valve 161 and the first end of the fourth electric valve 162 are both communicated with the liquid outlet of the base load refrigerating device 150; the second end of the third electric valve 161 is communicated with a liquid outlet on the secondary side of the ice melting transducer 230 and a liquid inlet of the water separator 120; the second end of the fourth electric valve 162 is connected to the liquid outlet of the first cooling circulation pump 130 and the liquid inlet of the dual-evaporator cryogenic device 300. In this embodiment, the base-load refrigeration device 150 can be operated according to the specific requirements of the air conditioner end temperature and the operation energy efficiency, and the second cooling circulation pump 140 and the base-load refrigeration device 150 are selected to participate in the cooling of the cooling medium by opening and closing the third electric valve 161 and the fourth electric valve 162, so that the cooling system can be suitable for application scenarios with a wider range of temperatures. Specifically, the third electric valve 161 is opened, the fourth electric valve 162 is closed, the first cooling circulation pump 130, the first evaporator 340 and the secondary side of the ice melting transducer 230, the second cooling circulation pump 140 and the base-load refrigerating device 150 are connected in parallel between the water collector 110 and the water separator 120; the third electric valve 161 is closed, the fourth electric valve 162 is opened, and the second cooling circulation pump 140, the base-load refrigerating device 150, the first evaporator 340 and the ice-melting transducer 230 are connected in series between the water collector 110 and the water separator 120 on the secondary side.

Specifically, the on-load refrigeration apparatus 150 includes a second low-temperature compressor 151, a second condenser 152, a second throttle valve 153, and a third evaporator 154, and the second low-temperature compressor 151, the second condenser 152, the second throttle valve 153, and the third evaporator 154 are sequentially and circularly connected, and the refrigerant-transporting medium can flow through the third evaporator 154. In the present embodiment, the second condenser 152 cools the high-pressure and high-temperature second refrigerant from the second low-temperature compressor 151 to a high pressure and a low temperature, and the high-pressure and low-temperature second refrigerant is atomized in the second throttle valve 153, absorbs heat in the third evaporator 154 to evaporate, and flows to the second low-temperature compressor 151 to form a cycle. In this process, the refrigerant transfer medium and the second refrigerant exchange heat in the third evaporator 154. The connection manner of the second low temperature compressor 151, the second condenser 152, the second throttle valve 153 and the third evaporator 154 is the prior art, and will not be described in detail herein.

The control method using the cooling system specifically includes:

and adjusting the adjusting valve group to enable the cold accumulation medium to exchange heat with the cold transmission medium.

The electric valve group is adjusted to enable the first refrigerant to exchange heat with the cold transmission medium or exchange heat with the cold accumulation medium.

The regulating valve group and the electric valve group are regulated so that the cold accumulation medium and the first refrigerant exchange heat with the cold transmission medium.

In this embodiment, the adjusting the electric valve group enables the cooling system to have a first working condition, namely an ice storage working condition, specifically includes: the double-evaporator cryogenic device 300 is switched to ice storage mode, i.e. the first electrically operated valve 361 is closed and the second electrically operated valve 362 is opened; the dual evaporator cryogenic low temperature device 300 and the cryogenic ice storage device 210 operate such that the first refrigerant in the second evaporator 350 exchanges heat with the cold storage medium in the cryogenic ice storage device 210. Further, the cold conveyance unit 100, the ice melting pump 220, and the ice melting transducer 230 do not operate. In the present embodiment, the first refrigerant circulates among the first low temperature compressor 310, the first condenser 320, the first throttle valve 330 and the second evaporator 350, and the first refrigerant in the second evaporator 350 exchanges heat with the cold storage medium in the ice storage device 210 until ice storage is completed.

In this embodiment, the adjusting the electric valve group enables the cooling system to have a second working condition, that is, a single host machine supply working condition, specifically includes: the double-evaporator cryogenic device 300 is switched to a cold supply condition, i.e., the first electrically operated valve 361 is opened and the second electrically operated valve 362 is closed; the dual evaporator cryogenic device 300 and the first cooling circulation pump 130 operate to exchange heat between the first refrigerant and the cooling medium at the first evaporator 340 to reduce the temperature of the cooling medium. Further, the cooling unit 200 is not operated. In this embodiment, under the action of the first cooling circulation pump 130, the cold transfer medium flows from the water collector 110 to the water separator 120 sequentially through the first cooling circulation pump 130, the first evaporator 340, and the secondary side of the ice melting transducer 230. The cold transfer medium exchanges heat with the first refrigerant at the first evaporator 340 to cool the cold transfer medium, and then transfer the cold to the air conditioner terminal.

In this embodiment, the adjusting valve group adjusts the cooling system to have a third working condition, namely ice melting single release Leng Gongkuang, which specifically includes: the first regulating valve 241 and the second regulating valve 242 are opened in a certain ratio; the cryogenic ice storage device 210, the ice melting pump 220, the ice melting transducer 230 and the first cooling circulation pump 130 operate, so that the cold storage medium exchanges heat with the cold transport medium in the ice melting transducer 230 to reduce the temperature of the cold transport medium. Further, the dual evaporator cryogenic device 300 is not operated. In this embodiment, under the action of the ice melting pump 220, the cold storage medium circularly flows among the sub-cooled ice storage device 210, the ice melting pump 220 and the primary side of the ice melting transducer 230; under the work of the first cooling circulation pump 130, the cold transfer medium flows from the water collector 110 to the water separator 120 sequentially through the first cooling circulation pump 130, the first evaporator 340 and the secondary side of the ice melting transducer 230. The cold storage medium exchanges heat between the primary side of the ice melting transducer 230 and the cold transfer medium of the secondary side of the ice melting transducer 230, so as to cool the cold transfer medium, and further transfer the cold energy to the tail end of the air conditioner until the cold energy stored by the cold storage medium in the cryogenic ice storage device 210 is used up. In addition, the opening of the first regulating valve 241 and the second regulating valve 242 are regulated to regulate the flow of the cold storage medium exchanging heat between the primary side of the ice melting transducer 230 and the cold transmission medium of the secondary side of the ice melting transducer 230, so as to control the heat exchanging quantity of the cold storage medium and the cold transmission medium, and further, the third working condition of the cold supply system is suitable for more temperature requirements.

In this embodiment, the adjusting valve group and the electric valve group enable the cooling system to have a fourth working condition, namely a combined cooling working condition, specifically including: the double-evaporator cryogenic device 300 is switched to a cold supply condition, i.e., the first electrically operated valve 361 is opened and the second electrically operated valve 362 is closed; the first regulating valve 241 and the second regulating valve 242 are opened in a certain ratio; the double-evaporator cryogenic low temperature device 300, the cryogenic ice storage device 210, the ice melting pump 220, the ice melting energy converter 230 and the first cooling circulation pump 130 operate, so that after the cold transfer medium exchanges heat with the first refrigerant at the first evaporator 340, the cold transfer medium exchanges heat with the cold storage medium in the ice melting energy converter 230 to reduce the temperature of the cold transfer medium. In this embodiment, under the action of the ice melting pump 220, the cold storage medium circularly flows among the sub-cooled ice storage device 210, the ice melting pump 220 and the primary side of the ice melting transducer 230; under the work of the first cooling circulation pump 130, the cold transfer medium flows from the water collector 110 to the water separator 120 sequentially through the first cooling circulation pump 130, the first evaporator 340 and the secondary side of the ice melting transducer 230. The cold-transferring medium exchanges heat with the first refrigerant at the first evaporator 340 and cools down, and the cooled cold-transferring medium exchanges heat with the cold-storage medium at the secondary side of the ice-melting transducer 230 and the primary side of the ice-melting transducer 230 and then cools down further, so as to realize the secondary cooling of the cold-transferring medium, and further transfer the cold energy to the tail end of the air conditioner until the cold energy stored by the second cold-storage medium in the cryogenic ice-storage device 210 is exhausted. In the cooling process, the double-evaporator cryogenic low-temperature device 300 and the cooling release unit 200 are matched to bear partial load respectively, so that the cooling requirement of the whole air conditioner end system is met. In addition, the opening degree of the first regulating valve 241 and the second regulating valve 242 is regulated to regulate the flow of the cold storage medium exchanging heat between the primary side of the ice melting transducer 230 and the cold transmission medium of the secondary side of the ice melting transducer 230, so as to control the heat exchanging quantity of the cold storage medium and the cold transmission medium.

It should be noted that, in the above four working conditions, the second cooling circulation pump 140 and the base-load refrigeration device 150 are selected by opening and closing the third electric valve 161 and the fourth electric valve 162, and are connected in series or in parallel with the double-evaporator cryogenic device 300 and the ice melting transducer 230, and the base-load refrigeration device 150 is opened to regulate the final temperature of the cold transfer medium flowing from the water collector 110 to the water separator 120, so that the cooling system meets the required temperature requirement.

In the present embodiment, the third electric valve 161 is opened and the fourth electric valve 162 is closed to enable the cold conveying unit 100 to have the first self-cooling operation. Specifically, the third electric valve 161 is opened and the fourth electric valve 162 is closed, and the first and second cooling circulation pumps 130 and 140 are operated, so that a portion of the cooling medium flowing out of the water collector 110 flows to the water separator 120 through the first cooling circulation pump 130, the first evaporator 340 and the ice melting transducer 230 in this order, and another portion of the cooling medium flowing out of the water collector 110 flows to the water separator 120 through the second cooling circulation pump 140 and the base-load refrigerating device 150 in this order.

In the present embodiment, the third electric valve 161 is closed and the fourth electric valve 162 is opened to enable the cold conveying unit 100 to have the second self-cooling operation. Specifically, the third electric valve 161 is closed and the fourth electric valve 162 is opened, and the second cooling circulation pump 140 is operated, so that the cooling medium flowing out of the water collector 110 flows to the water separator 120 sequentially through the second cooling circulation pump 140, the base-load cooling device 150, the first evaporator 340, and the ice-melting transducer 230.

In this embodiment, the base-load refrigeration device 150 operates under the first self-cooling condition and the second self-cooling condition, so that the cold conveying unit 100 can self-lower the temperature of the cold conveying medium, and the cold supply system can be suitable for application scenarios with a wider range of temperatures. Of course, the cold conveying unit 100 may cool the cold conveying medium solely by the base-load refrigerating device 150, and the base-load refrigerating device 150 may not operate and not participate in cooling the cold conveying medium.

The cooling system in this embodiment has multiple working conditions, and the second working condition to the fourth working condition are selected to operate to reduce the temperature of the cooling medium in the cooling conveying unit 100, and the cooling medium flows from the water collector 110 to the water separator 120, so that the cooling capacity is conveyed to the tail end of the air conditioner, and the cooling system can meet the temperature requirements of multiple application scenarios. In addition, the first working condition is operated to enable the cryogenic ice storage device 210 to store ice so as to accumulate cold energy, and the cooling system can adapt to application scenes with a wider range of temperatures.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A cooling system, comprising:

the cold conveying unit (100), the cold conveying unit (100) is connected with the tail end of the air conditioner, a cold conveying medium is circulated in the cold conveying unit (100), and the cold conveying medium is used for conveying cold to the tail end of the air conditioner;

the cold release unit (200) exchanges heat with the cold conveying unit (100), cold accumulation media are circulated in the cold release unit (200), the cold release unit (200) comprises a regulating valve group, and the cold accumulation media and the cold conveying media can exchange heat through regulating the regulating valve group so as to reduce the temperature of the cold conveying media;

the double-evaporator cryogenic low-temperature device (300) is respectively in heat exchange with the cold conveying unit (100) and the cold releasing unit (200), a first refrigerant circulates in the double-evaporator cryogenic low-temperature device (300), the double-evaporator cryogenic low-temperature device (300) comprises an electric valve group, and the first refrigerant can be in heat exchange with the cold conveying medium to reduce the temperature of the cold conveying medium or in heat exchange with the cold accumulating medium to reduce the temperature of the cold accumulating medium by adjusting the electric valve group.

2. The cooling system according to claim 1, wherein the dual evaporator cryogenic device (300) further comprises a first cryogenic compressor (310), a first condenser (320), a first throttle valve (330) and a first evaporator (340) that are cyclically connected in sequence; wherein,,

the first refrigerant can circulate in sequence among the first low-temperature compressor (310), the first condenser (320), the first throttle valve (330) and the first evaporator (340), the cold transfer medium can flow through the first evaporator (340), and the cold transfer medium can exchange heat with the first refrigerant at the first evaporator (340).

3. The cooling system according to claim 2, wherein the dual evaporator cryogenic device (300) further comprises a second evaporator (350), the first refrigerant in the second evaporator (350) being capable of exchanging heat with the cold storage medium in the cold release unit (200);

the first interface of second evaporimeter (350) with first low temperature compressor (310) with first evaporimeter (340) intercommunication sets up, the second interface of second evaporimeter (350) with first choke valve (330) with first evaporimeter (340) intercommunication sets up, through adjusting the electric valve group can make first refrigerant in first low temperature compressor (310), first condenser (320), first choke valve (330) and first evaporimeter (340) are circulated the flow in proper order, or in first low temperature compressor (310), first condenser (320), first choke valve (330) and second evaporimeter (350) are circulated the flow in proper order.

4. A cooling system according to claim 3, wherein the valve block further comprises:

the first electric valve (361) is arranged at the first end of the first electric valve (361) in a communicating way with the first throttle valve (330), the second end of the first electric valve (361) is arranged at the first evaporator (340) in a communicating way, and the first throttle valve (330) and the first evaporator (340) can be opened and closed through the opening and closing of the first electric valve (361);

the first end of the second electric valve (362) is communicated with a second interface of the second evaporator (350), the second end of the second electric valve (362) is communicated with the first end of the first electric valve (361) and the first throttle valve (330), and the first throttle valve (330) and the second evaporator (350) can be opened and closed through the opening and closing of the second electric valve (362).

5. The cooling system of claim 1, wherein the cooling unit (200) further comprises a cryogenic ice storage device (210), an ice melting pump (220), and an ice melting transducer (230); wherein,,

the liquid outlet of the cryogenic ice storage device (210) is communicated with the liquid inlet of the ice melting pump (220), the liquid outlet of the ice melting pump (220) is communicated with the liquid inlet of the primary side of the ice melting transducer (230), and the liquid outlet of the primary side of the ice melting transducer (230) is communicated with the liquid inlet of the cryogenic ice storage device (210);

the double-evaporator cryogenic ice storage device (210) exchanges heat with the double-evaporator cryogenic low-temperature device (300), the cold storage medium is arranged in the double-evaporator cryogenic ice storage device (210), and the double-evaporator cryogenic low-temperature device (300) can reduce the temperature of the cold storage medium in the double-evaporator cryogenic ice storage device (210);

the cold storage medium can circularly flow between the cryogenic ice storage device (210) and the primary side of the ice melting transducer (230) under the driving of the ice melting pump (220) by adjusting the adjusting valve group;

the liquid inlet and the liquid outlet of the secondary side of the ice melting transducer (230) are communicated with the cold conveying unit (100), and the cold conveying medium can exchange heat with the cold storage medium in the ice melting transducer (230).

6. The cooling system according to claim 5, characterized in that the regulating valve group comprises a first regulating valve (241) and a second regulating valve (242); wherein,,

the first end of the first regulating valve (241) is communicated with a liquid outlet of the ice melting pump (220), and the second end of the first regulating valve (241) is communicated with a liquid inlet at the primary side of the ice melting transducer (230);

the first end of the second regulating valve (242) is communicated with the liquid outlet of the primary side of the ice melting pump (220) and the first end of the first regulating valve (241), and the second end of the second regulating valve (242) is communicated with the liquid outlet of the ice melting transducer (230) and the liquid inlet of the cryogenic ice storage device (210).

7. The cooling system according to claim 5, wherein the cold conveyance unit (100) includes a water collector (110), a water separator (120), and a first cooling circulation pump (130); wherein,,

the liquid outlet of the water collector (110) is communicated with the liquid inlet of the first cold supply circulating pump (130), the liquid outlet of the first cold supply circulating pump (130) is communicated with the liquid inlet of the double-evaporator cryogenic low-temperature device (300), the liquid outlet of the double-evaporator cryogenic low-temperature device (300) is communicated with the liquid inlet of the secondary side of the ice melting transducer (230), the liquid outlet of the secondary side of the ice melting transducer (230) is communicated with the liquid inlet of the water separator (120), and the water separator (120) is connected with the tail end of the air conditioner;

the first cooling circulation pump (130) can enable the cold conveyance medium to flow from the water collector (110) to the water separator (120).

8. The cooling system according to claim 7, wherein the cold conveyance unit (100) further comprises a second cooling circulation pump (140) and a base-load refrigeration device (150); wherein,,

the liquid inlet of the second cooling circulation pump (140) is communicated with the liquid outlet of the water collector (110) and the liquid inlet of the first cooling circulation pump (130), and the liquid outlet of the second cooling circulation pump (140) is communicated with the liquid inlet of the base-load refrigerating device (150);

the liquid outlet of the base-load refrigerating device (150) is communicated with the liquid outlet of the first cold supply circulating pump (130) and the liquid inlet of the double-evaporator cryogenic low-temperature device (300), or is communicated with the liquid outlet of the secondary side of the ice melting transducer (230) and the liquid inlet of the water separator (120), and the base-load refrigerating device (150) can reduce the temperature of a cold transmission medium.

9. The cooling system according to claim 8, wherein the cold conveyance unit (100) further comprises a third electrically operated valve (161) and a fourth electrically operated valve (162); wherein,,

the first end of the third electric valve (161) and the first end of the fourth electric valve (162) are communicated with the liquid outlet of the base load refrigerating device (150);

the second end of the third electric valve (161) is communicated with a liquid outlet at the secondary side of the ice melting transducer (230) and a liquid inlet of the water separator (120);

the second end of the fourth electric valve (162) is communicated with the liquid outlet of the first cold supply circulating pump (130) and the liquid inlet of the double-evaporator cryogenic low-temperature device (300).

10. The cooling system according to any one of claims 1 to 9, wherein the cold storage medium is an inorganic phase change medium or an organic phase change medium, and the cold transport medium is an inorganic salt solution.