CN219775898U

CN219775898U - cooling unit

Info

Publication number: CN219775898U
Application number: CN202320460228.3U
Authority: CN
Inventors: 陈锐涛; 陶锴; 杨威武; 黄勇明
Original assignee: Shenzhen Envicool Technology Co Ltd
Current assignee: Shenzhen Envicool Technology Co Ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-09-29
Anticipated expiration: 2033-03-02

Abstract

The utility model discloses a cooling unit, which comprises an evaporator, a heat exchanger, a condenser, a compressor and an expansion valve, wherein the evaporator is connected with the heat exchanger; the evaporator is provided with an evaporation inlet and an evaporation outlet; the heat exchanger can exchange heat with the user side, the heat exchanger is provided with a heat supply side and a heat exchange side, the heat supply side is provided with a heat supply inlet and a heat supply outlet, the evaporation outlet is communicated with the heat supply inlet through a first pipeline, the heat supply outlet is communicated with the evaporation inlet through a second pipeline, and the heat exchange side is connected with the user side; the condenser is provided with a condensation inlet and a condensation outlet, the condensation inlet is communicated with the first pipeline through a third pipeline, and the condensation outlet is communicated with the second pipeline through a fourth pipeline; the compressor is communicated with the first pipeline and is positioned between the communication part of the third pipeline and the first pipeline and the evaporator so as to provide high-temperature and high-pressure gas for both the heat exchanger and the condenser; the expansion valve is communicated with the second pipeline; the technical problem of complicated system of the existing cooling unit with the waste heat recovery function is solved.

Description

Cooling unit

Technical Field

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

Background

The cooling unit achieves cooling by circulation of a fluid such as a refrigerant, and in the process of achieving the present utility model, the inventor has found that at least the following problems exist in the prior art: in the operation process of the cooling unit, continuous heat exchange can take away indoor heat, waste heat resources of the heat are rich, high-temperature and high-pressure gas can be generated in the operation process of the cooling unit, such as a compressor, but the heat is not effectively utilized, firstly, part of the existing cooling unit does not have a waste heat recovery function, secondly, the whole system of the cooling unit with the waste heat recovery function is complex, the adjustment is difficult, and the operation cost of the whole unit is increased.

Disclosure of Invention

In view of the above, the present utility model provides a cooling unit for improving the complex technical problem of the existing cooling unit system with waste heat recovery function.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a cooling unit, the cooling unit comprising:

the evaporator is used for exchanging heat with indoor return air and is provided with an evaporation inlet and an evaporation outlet;

the heat exchanger is used for exchanging heat with a user side, the heat exchanger is provided with a heat supply side and a heat exchange side, the heat supply side is provided with a heat supply inlet and a heat supply outlet, the evaporation outlet is communicated with the heat supply inlet through a first pipeline, the heat supply outlet is communicated with the evaporation inlet through a second pipeline, and the heat exchange side is used for being connected with the user side;

the condenser is used for exchanging heat with outdoor air inlet, the condenser is provided with a condensation inlet and a condensation outlet, the condensation inlet is communicated with the first pipeline through a third pipeline, and the condensation outlet is communicated with the second pipeline through a fourth pipeline;

the compressor is communicated with the first pipeline and is positioned between the communication part of the third pipeline and the first pipeline and the evaporator so as to provide high-temperature and high-pressure working media for the heat exchanger and the condenser;

and the expansion valve is communicated with the second pipeline and is positioned between the evaporator and the communication position of the fourth pipeline and the second pipeline.

In some embodiments of the cooling unit, the cooling unit further comprises a heat pump mechanism, the heat exchange side is communicated with the user side through the heat pump mechanism, the heat pump mechanism is provided with a heating mode, and the heat pump mechanism can heat liquid flowing from the heat exchange side to the user side when in the heating mode.

In some embodiments of the cooling unit, the cooling unit further comprises:

the first one-way valve is communicated with the second pipeline and is positioned between the heat exchanger and the communication part of the fourth pipeline and the second pipeline;

and the second one-way valve is communicated with the fourth pipeline.

In some embodiments of the cooling unit, the cooling unit further comprises a liquid storage tank and a heating element, the heat exchange side is communicated with the user side through the liquid storage tank, the liquid storage tank is capable of storing liquid flowing from the heat exchange side to the user side, and the heating element is mounted to the liquid storage tank and is used for heating the liquid in the liquid storage tank.

In some embodiments of the cooling unit, the cooling unit further comprises a first regulating valve and a second regulating valve, wherein the first regulating valve is communicated with the first pipeline and is positioned between the heat exchanger and the compressor, the first regulating valve is used for regulating the flow rate of the first pipeline, the second regulating valve is communicated with the third pipeline, and the second regulating valve is used for regulating the flow rate of the third pipeline;

or, the cooling unit further comprises a three-way valve, two ports in the three-way valve are communicated with the first pipe, and the other port is communicated with the third pipeline.

In some embodiments of the cooling unit, the cooling unit further comprises:

the drying filter is communicated with the second pipeline and is positioned between the expansion valve and the communication part of the fourth pipeline and the second pipeline;

and a liquid viewing mirror which is communicated with the second pipeline and is positioned between the dry filter and the expansion valve.

In some embodiments of the cooling unit, the cooling unit further comprises a cooling mechanism comprising a heat exchange core, an inner fan, and an outer fan;

the inner fan is positioned at one side of the evaporator far away from the heat exchange core body and is used for enabling the indoor return air to sequentially pass through the heat exchange core body and the evaporator;

the outdoor fan is positioned at one side of the condenser far away from the heat exchange core body and is used for enabling the outdoor air inlet to sequentially pass through the heat exchange core body and the condenser and enabling the outdoor air inlet to be blown to the outside to form outdoor air;

the indoor return air and the outdoor inlet air can exchange heat at the heat exchange core.

In some embodiments of the cooling unit, the cooling mechanism further comprises a spray assembly for spraying liquid to the heat exchange core to regulate the temperature of the indoor return air.

In some embodiments of the cooling unit, the spray assembly comprises a spray pipe, a liquid receiving disc and a spray pump, the spray pipe comprises a first section and a second section which are communicated, one end of the first section is communicated with the liquid receiving disc, the other end of the first section is communicated with the second section, the second section is arranged above the heat exchange core along the gravity direction of the heat exchange core, a nozzle capable of spraying liquid to the heat exchange core is arranged on one side of the second section, the liquid receiving disc is positioned below the heat exchange core along the gravity direction of the heat exchange core, and the spray pump is communicated with the first section and is used for driving the liquid in the liquid receiving disc to flow to the nozzle.

In some embodiments of the cooling unit, the cooling unit further comprises a bypass bellows, the cooling unit is provided with an inlet for the outdoor inlet air to enter indoors, and the bypass bellows is used for guiding the outdoor outlet air to the inlet so that the outdoor outlet air can be mixed with the outdoor inlet air.

In some embodiments of the cooling unit, the condenser and the external fan are both accommodated in the bypass bellows, a communication hole is formed in the bypass bellows at a position corresponding to the heat exchange core, and the communication hole is used for allowing the outdoor air to enter the bypass bellows.

The implementation of the embodiment of the utility model has at least the following beneficial effects:

the cooling unit has the technical effect of recovering waste heat, and particularly, the heat exchanger and the condenser are connected to the evaporator and the compressor in parallel through the connection arrangement of the first pipeline, the second pipeline, the third pipeline and the fourth pipeline, so that the high-temperature and high-pressure working medium output by the compressor can be divided into two streams, one stream exchanges heat with a user side through the heat exchanger, the other stream can exchange heat with outdoor air inlet, after the heat exchange, the two streams of working medium are converged to the expansion valve, and the working medium used by the evaporator is formed through the throttling effect of the expansion valve.

According to the running method applied to the cooling unit, the heat exchanger and the condenser are arranged in parallel, wherein the heat exchanger is started according to the heat consumption requirement of the user side, namely, when the user side has the heat consumption requirement, the heat exchanger is started, otherwise, when the user side does not have the heat consumption requirement, the heat exchanger is not started, the main function of the condenser is cooling, when the environment temperature is high, such as hot seasons in summer, the condenser is required to cool at the moment, when the environment temperature is low, such as transitional seasons and cold seasons, the condenser is not required to be started for cooling, and in the transitional seasons and the cold seasons, the user side generally has the heat consumption requirement, namely, the heat exchanger is started, no matter which of the heat exchanger and the condenser is started, the evaporator, the compressor and the heat exchanger form a unit, the unit can meet the cooling requirement, so that the idle time of the compressor can be avoided in the transitional seasons and the cold seasons, the waste heat resources generated by the cooling unit and the whole cooling unit are effectively utilized, and the running method of the whole cooling unit is simple.

The computer readable storage medium and the computer device provided in the foregoing embodiments belong to the same concept as the corresponding cooling unit and the operation method embodiment of the cooling unit, so that the same technical effects as the corresponding cooling unit and the operation method embodiment thereof are respectively achieved, and are not described herein.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a cooling unit in one embodiment;

FIG. 2 is a schematic diagram of a cooling unit in one embodiment;

FIG. 3 is a schematic diagram of a cooling unit in one embodiment;

FIG. 4 is a flow chart of a method of operation in one embodiment;

FIG. 5 is a schematic diagram showing the logical judgment of the operation mode of the cooling mechanism according to the present utility model.

Wherein: 1. an evaporator; 2. a heat exchanger; 3. a condenser; 4. a compressor; 5. a heat pump mechanism;

61. a first pipeline; 62. a second pipeline; 63. a third pipeline; 64. a fourth pipeline;

71. a first one-way valve; 72. a second one-way valve; 73. a first regulating valve; 74. a second regulating valve; 75. a three-way valve; 76. drying the filter; 77. a liquid viewing mirror; 78. expansion valve

8. A cooling mechanism; 81. a heat exchange core; 82. an inner fan; 83. an external fan; 84. a spray assembly; 841. a shower pipe; 8411. a first section; 8412. a second section; 8413. a spout; 842. a liquid receiving disc; 843. a spray pump; 85. a third one-way valve;

91. a liquid storage tank; 92. a heating element; 100. bypass bellows.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many other different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The cooling unit realizes cooling through circulation of fluid such as refrigerant, and in the operation process of the cooling unit, continuous heat exchange can take away indoor heat, and waste heat resources of the heat are rich, and high-temperature and high-pressure gas can be generated in the operation process of the cooling unit such as a compressor, but the heat is not effectively utilized, and firstly, part of the existing cooling unit does not have a waste heat recovery function, and secondly, the whole system of the existing cooling unit with the waste heat recovery function is complex, the adjustment is difficult, and the operation cost of the whole unit is increased.

The cooling unit according to the utility model will be further described with reference to fig. 1-3.

In one cooling unit embodiment, the cooling unit includes an evaporator 1, a heat exchanger 2, a condenser 3, a compressor 4, and an expansion valve 78. The evaporator 1 is used for exchanging heat with indoor return air, and the evaporator 1 is provided with an evaporation inlet and an evaporation outlet. The heat exchanger 2 is used for exchanging heat with the user side, and the heat exchanger 2 is equipped with heat supply side and heat exchange side, and the heat supply side is equipped with heat supply entry and heat supply export, and the evaporation export is through first pipeline 61 and heat supply entry intercommunication, and the heat supply export is through second pipeline 62 and evaporation entry intercommunication, and the heat exchange side is used for being connected with the user side. The condenser 3 is used for exchanging heat with outdoor air intake, the condenser 3 is provided with a condensation inlet and a condensation outlet, the condensation inlet is communicated with the first pipeline 61 through a third pipeline 63, and the condensation outlet is communicated with the second pipeline 62 through a fourth pipeline 64. The compressor 4 is connected to the first pipe 61 and is located between the evaporator 1 and the connection point between the third pipe 63 and the first pipe 61, so that the high-temperature and high-pressure working medium (high-temperature and high-pressure gas) can be supplied to both the heat exchanger 2 and the condenser 3, that is, both the heat exchanger 2 and the condenser 3 are connected in parallel to the compressor 4. An expansion valve 78 is connected to the second pipe 62 and is located between the evaporator 1 and the place where the fourth pipe 64 is connected to the second pipe 62.

In this embodiment, the connection arrangement of the first pipeline 61, the second pipeline 62, the third pipeline 63 and the fourth pipeline 64 enables the heat exchanger 2 and the condenser 3 to be connected to the evaporator 1 and the compressor 4 in parallel, so that the high-temperature and high-pressure air output by the compressor 4 can be divided into two parts, one part exchanges heat with the user side through the heat exchanger 2, the other part can exchange heat with outdoor air intake, after the heat exchange, the two parts of high-temperature and high-pressure air can be converted into medium-temperature and high-pressure working media (liquid, namely medium-temperature and high-pressure liquid) and are combined into the expansion valve 78, and then the working media (generally low-temperature and low-pressure gas-liquid mixture) for the evaporator 1 are formed through the throttling effect of the expansion valve 78.

In one embodiment of the cooling unit, the cooling unit further comprises a heat pump mechanism 5, the heat exchange side is communicated with the user side through the heat pump mechanism 5, the heat pump mechanism 5 is provided with a heating mode, and the heat pump mechanism 5 can heat liquid flowing from the heat exchange side to the user side when in the heating mode.

In this embodiment, the heat pump mechanism 5 is connected in series with the heat exchange side of the heat exchanger 2, so that the heat exchanger 2 only needs to prepare medium-temperature water, and the work of heating the medium-temperature water to the high-temperature water can be completed by the heat pump mechanism 5, thereby reducing the pressure of the compressor 4, reducing the condensing pressure, reducing the energy consumption of the whole compressor 4, reducing the power distribution and reducing the running cost of the whole unit.

In one embodiment of the cooling unit, the cooling unit further comprises a first check valve 71 and a second check valve 72, the first check valve 71 being in communication with the second conduit 62 and being located between the heat exchanger 2 and the communication between the fourth conduit 64 and the second conduit 62. The second check valve 72 communicates with the fourth conduit 64.

In this embodiment, the reverse flow of the liquid in the fourth pipeline 64 to the heat exchanger 2 can be avoided by providing the first check valve 71, and similarly, the reverse flow of the liquid in the second pipeline 62 to the fourth pipeline 64 can be avoided by providing the second check valve 72, so that the liquid from the heat exchange outlet and the condensation outlet can flow to the expansion valve 78 and the evaporator 1, and the orderly operation of the unit is more effectively ensured.

In one embodiment of the cooling unit, the cooling unit further includes a liquid storage tank 91 and a heating element 92, the heat exchange side is communicated with the user side through the liquid storage tank 91, the liquid storage tank 91 is capable of storing liquid flowing from the heat exchange side to the user side, and the heating element 92 is mounted to the liquid storage tank 91 and is used for heating the liquid in the liquid storage tank 91.

In this embodiment, a certain volume of liquid can be stored by providing the liquid storage tank 91, so that stable high-temperature liquid supply to the user terminal can be ensured, and the liquid in the liquid storage tank 91 can be heated by the heating element 92, which can be an electric heater, so as to meet the requirement of the user terminal.

In connection with the previous embodiments, the heat pump mechanism 5 may be arranged between the reservoir 91 and the heat exchanger 2, such that the heating element 92 may be removed and the heat pump mechanism 5 may be used instead of the heating element 92.

It will be appreciated that the liquid storage tank 91 may be used for storing liquid, and may be stored according to the requirement of the user, for example, when the user is a home unit, the liquid storage tank 91 may be used for storing water to provide hot water, and of course, the liquid storage tank 91 may also be used for storing other liquids such as organic solutions, etc., so as to illustrate that the liquid storage tank 91 may store different liquids according to the requirement of the user.

In one embodiment of the cooling unit, the cooling unit further comprises a first regulating valve 73 and a second regulating valve 74, wherein the first regulating valve 73 is communicated with the first pipeline 61 and is positioned between the heat exchanger 2 and the compressor 4, the first regulating valve 73 is used for regulating the flow rate of the first pipeline 61, the second regulating valve 74 is communicated with the third pipeline 63, and the second regulating valve 74 is used for regulating the flow rate of the third pipeline 63. Or the cooling unit further comprises a three-way valve 75, two ports in the three-way valve 75 are communicated with the first pipe, and the other port is communicated with the third pipeline 63.

In this embodiment, the cooling unit can adjust the communication relationship between the heat exchanger 2 and the condenser 3 and the compressor 4 through two adjusting valves or one three-way valve 75, so that three communication modes of one of the heat exchanger 2 and the condenser 3 communicating with the compressor 4 and the other of the heat exchanger 2 and the condenser 3 communicating with the compressor 4 can be realized, and only the first adjusting valve 73 and the second adjusting valve 74 are required to be adjusted, or only the three-way valve 75 is required to be adjusted, so that the switching mode is simple and the switching is convenient.

It will be appreciated that the adjustment of the first regulator valve 73 and the adjustment of the second regulator valve 74 may be adjusted in accordance with the condensing pressure. In addition, the three-way valve 75 can reduce the cost compared with two regulating valves, and is simpler than the two regulating valve regulating modes.

In one embodiment of the cooling unit, the cooling unit further includes a dry filter 76 and a liquid mirror 77, where the dry filter 76 is connected to the second pipeline 62 and is located between the connection between the fourth pipeline 64 and the second pipeline 62 and the expansion valve 78, and the dry filter 76 is used to filter impurities in the fluid in the second pipeline 62. A liquid viewing mirror 77 is in communication with the second conduit 62 and is positioned between the dry filter 76 and the expansion valve 78, the liquid viewing mirror 77 being configured to allow a user to view the condition of the fluid in the second conduit 62.

In this embodiment, impurities in the medium-temperature and high-pressure liquid can be filtered by arranging the drying filter 76, so that the expansion valve 78 is prevented from being blocked, and meanwhile, by arranging the liquid viewing mirror 77, a user can conveniently view the condition of the medium-temperature and high-pressure liquid in the second pipeline 62, such as the water content.

In one cooling unit embodiment, the cooling unit further comprises a cooling mechanism 8, the cooling mechanism 8 comprising a heat exchange core 81, an inner fan 82 and an outer fan 83. The inner fan 82 is located at a side of the evaporator 1 away from the heat exchange core 81, and is used for making indoor return air pass through the heat exchange core 81 and the evaporator 1 in sequence. The external fan 83 is located at a side of the condenser 3 away from the heat exchange core 81, and is used for making the outdoor air intake pass through the heat exchange core 81 and the condenser 3 in sequence, and making the outdoor air intake blow to the outdoor to form outdoor air. Indoor return air and outdoor inlet air are subjected to heat exchange at the heat exchange core 81.

In this embodiment, by setting the cooling mechanism 8, the machine room such as a data center can be cooled, the high-temperature air blown out by the machine room is indoor return air, after being cooled by the heat exchange core 81 and the evaporator 1, the air blown back to the machine room by the inner fan 82 is indoor air, the air entering the space where the cooling unit is located from the outside is outdoor air inlet, after passing through the heat exchange core 81 and the condenser 3, the air blown out to the outside by the outer fan 83 is outdoor air outlet, firstly, the heat exchange core 81 can exchange heat with the indoor return air, then the heat exchange is performed between the outdoor air inlet and the indoor return air, and further the cooling can be performed on the indoor return air, if the air return temperature requirement is not met after the heat exchange of the indoor return air and the outdoor air inlet, the heat exchange can be performed with the evaporator 1, so that the indoor return air is further cooled.

In one chiller embodiment, the cooling mechanism 8 also includes a spray assembly 84, the spray assembly 84 being used to spray liquid onto the heat exchange core 81 to regulate the temperature of the indoor return air.

In this embodiment, the spraying component 84 is arranged to spray the liquid to the heat exchange core 81, so that an evaporative cooling effect can be formed on the heat exchange core 81, and evaporation of the liquid on the heat exchange core 81 can be accelerated under the action of the air flow formed by the inner fan 82 and the outer fan 83, so as to achieve the purpose of evaporative cooling.

It will be appreciated that the cooling mechanism 8 has a dry mode and a spray mode, the dry mode corresponding to cooling by the outdoor air supply only when the spray assembly 84 is not active, and the spray mode corresponding to activating the spray assembly 84 on the basis of the dry mode.

Specifically, the spray assembly 84 includes a spray pipe 841, a liquid receiving plate 842 and a spray pump 843, the spray pipe 841 includes a first section 8411 and a second section 8412 which are communicated, one end of the first section 8411 is communicated with the liquid receiving plate 842, the other end is communicated with the second section 8412, the second section 8412 is arranged above the heat exchange core 81 along the gravity direction thereof, a nozzle 8413 capable of spraying liquid to the heat exchange core 81 is arranged on one side of the second section 8412 facing the heat exchange core 81, the liquid receiving plate 842 is positioned below the heat exchange core 81 along the gravity direction thereof, and the spray pump 843 is communicated with the first section 8411 and is used for driving the liquid in the liquid receiving plate 842 to flow to the nozzle 8413.

Preferably, the second section 8412 extends in the horizontal direction, and the number of the nozzles 8413 is plural, and the nozzles are disposed at equal intervals in correspondence with the extending direction of the second section 8412 along the heat exchange core 81. Further, a plurality of nozzles may be provided in one-to-one correspondence with the nozzles 8413, and the liquid may be sprayed onto the heat exchange core 81 through the nozzles, thereby increasing the contact area with the heat exchange core 81.

In order to prevent the liquid in the first section 8411 from flowing back to the liquid receiving plate 842, a third check valve 85 may be added to the first section 8411.

In connection with the previous embodiments, several specific operation modes according to the present utility model are described, and the cooling units are divided into a heating requirement and a non-heating requirement according to whether there is a heating requirement, that is, whether the heat exchanger 2 is required to supply heat to the user side.

When there is the heat supply demand, can divide into two kinds of mode one and mode two, mode one is that first governing valve 73 and second governing valve 74 are all opened, and cooling body 8 can operate in spraying mode this moment, and first governing valve 73 and second governing valve 74 can be adjusted according to the condensing pressure of whole cooling unit, and interior fan 82 adjusts according to indoor return air and indoor air supply difference in temperature, and outer fan 83 adjusts according to the condensing pressure of whole cooling unit, and compressor 4 adjusts according to the refrigeration demand, retrieves the condensation heat through heat exchanger 2, is used for to the user side heat transfer to can reduce outer fan 83 and compressor 4 energy consumption, realize waste heat recovery. The second mode is that the first regulating valve 73 is opened, the second regulating valve 74 is closed, that is, the condenser 3 does not work, the evaporator 1, the heat exchanger 2 and the compressor 4 work, the cooling mechanism 8 can operate in a dry mode or a spraying mode, the compressor 4 is regulated according to the heating requirement of a user side and the set compression ratio, the inner fan 82 is regulated according to the temperature difference between indoor return air and indoor air supply, and the outer fan 83 is regulated according to the refrigerating requirement.

When there is no heat supply requirement, that is, the heat exchanger 2 is not required to work at this time, the operation mode can be divided into three and four modes, the third mode is that the first regulating valve 73 is closed and the second regulating valve 74 is opened, the cooling mechanism 8 can operate in a spraying mode at this time, the evaporator 1, the compressor 4 and the condenser 3 all work, the inner fan 82 is adjusted according to the temperature difference of indoor air supply and indoor return air, the outer fan 83 is adjusted according to the condensing pressure, and the compressor 4 is adjusted according to the refrigerating requirement. The fourth mode is that the compressor 4 is turned off, that is, the evaporator 1, the condenser 3 and the heat exchanger 2 are not operated, at this time, the cooling mechanism 8 can be operated in a dry mode or a spray mode, the inner fan 82 is adjusted according to the temperature difference between the indoor return air and the indoor supply air, and the outer fan 83 is adjusted according to the refrigeration requirement.

Mode one and mode three may generally operate at higher ambient temperatures, such as in summer, and mode two and mode four may generally operate at lower ambient temperatures, such as in winter.

In one embodiment of the cooling unit, the cooling unit further comprises a bypass bellows 100, wherein the cooling unit is provided with an inlet air portion for supplying outdoor inlet air into the room, and the bypass bellows 100 is used for guiding outdoor outlet air to the inlet air portion so that the outdoor outlet air can be mixed with the outdoor inlet air.

In this embodiment, it can be understood that, since the outdoor air-out is formed by heat exchanging with the indoor return air, the temperature of the outdoor air-out is higher than that of the outdoor air-in, and the outdoor air-out and the outdoor air-in are mixed to form a new outdoor air-in, the new outdoor air-in is higher than that of the original outdoor air-in, so that the heat exchanging core 81 can be prevented from freezing.

In one embodiment of the cooling unit, the condenser 3 and the external fan 83 are both accommodated in the bypass bellows 100, and the bypass bellows 100 is provided with a communication hole at a position corresponding to the heat exchange core 81, and the communication hole is used for allowing the external air to enter the bypass bellows 100.

In this embodiment, the condenser 3 and the external fan 83 are both accommodated in the side ventilation box 100, so that the outdoor air outlet formed after the outdoor air inlet exchanges heat with the condenser 3 is formed in the side ventilation box 100, thereby avoiding waste heat of the condenser 3, and further having the effect of heating the outdoor air outlet and further preventing the heat exchange core 81 from freezing.

The embodiment of the utility model also relates to an operation method applied to the embodiment, and the operation method comprises the following steps in combination with the figures 1-4:

s1, acquiring the heat consumption requirement of a user side.

S2, starting and stopping the heat exchanger 2 according to the heat demand of the user side.

S3, acquiring the ambient temperature.

S4, opening and closing the condenser 3 according to the ambient temperature.

S5, starting and stopping the compressor 4 by combining the starting and stopping conditions of the heat exchanger 2 and the condenser 3.

In the above-mentioned operation method applied to the cooling unit, since the heat exchanger 2 and the condenser 3 are arranged in parallel, the heat exchanger 2 is started according to the heat demand of the user side, that is, when the user side has the heat demand, the heat exchanger 2 is started, whereas when the user side does not have the heat demand, the heat exchanger 2 is not started, and the condenser 3 mainly plays a role in cooling, when the ambient temperature is high, such as in hot summer, the condenser 3 is needed for cooling at this time, and when the ambient temperature is low, such as in transition season and cold season, the condenser 3 is not needed for cooling, and in transition season and cold season, since the user side generally has the heat demand, that is, the heat exchanger 2 is started, and no matter which of the heat exchanger 2 and the condenser 3 is started, the evaporator 1, the compressor 4 and the heat exchanger 2 form a unit, and the unit can meet the cooling demand, thereby the compressor can avoid the idle cooling unit and further effectively utilize the waste heat generated by the cooling unit and the whole cooling unit, and the whole operation method is simple.

In some embodiments of the method of operation, as shown in connection with fig. 1-5, the cooling unit further comprises a cooling mechanism 8, the mode of operation of the cooling mechanism 8 comprising a dry mode and a spray mode, the method of operation further comprising the steps of:

the opening and closing condition of the condenser 3 is obtained.

The on-off condition of the heat exchanger 2 is obtained.

The refrigeration demand is obtained.

The operation mode of the cooling mechanism 8 is adjusted by combining the opening and closing condition of the heat exchanger 2, the opening and closing condition of the condenser 3 and the refrigeration requirement.

The cooling mechanism 8 sequentially determines whether the condenser 3 is started, whether the heat exchanger 2 is started and whether the refrigeration requirement is high or low, and then enters the next determination when the previous determination is a negative result.

The operation method of the embodiment has simple steps, only needs a few steps of judgment, can complete the replacement of the mode of the whole cooling mechanism 8, and has clear logic. Specifically, referring to fig. 5, when the cooling mechanism 8 judges and is to switch the working mode, it is first checked whether the condenser 3 is started, the condenser 3 is started to indicate that the current ambient temperature is high, if in hot summer, the cooling mechanism 8 is directly started to spray the mode, and the judgment is ended, otherwise, the condenser 3 is not started to indicate that the current ambient temperature is low, if in transitional season and cold season, the next step is to judge the heat exchanger 2, and when the heat exchanger 2 is started, it is to indicate that the compressor 4 is started, so that the unit formed by the evaporator 1, the heat exchanger 2 and the compressor 4 can perform a part of cooling function, at this time, the cooling mechanism 8 can operate in a dry mode, and when the heat exchanger 2 is not started, the cooling mechanism 4 is not started, at this time, the cooling mechanism is only sprayed by the cooling mechanism 8 to realize cooling, and at this time, the judgment of the cooling requirement is needed, if the cooling requirement is high, the cooling mechanism 8 is started in a mode, otherwise, the cooling mechanism 8 is started in a dry mode.

When the cooling demand is judged, the cooling demand is relatively high in the transition season and the cold season, and even if the cooling demand is high, the cooling unit only in the spraying mode can meet the cooling demand, and after the heat exchanger 2 is started, the cooling mechanism 8 can be switched to the dry mode for operation. Further, the operation mode finally obtained by the operation method of the embodiment corresponds to the first mode to the fourth mode in the previous embodiment of the cooling unit, and specific effects are not repeated.

The embodiments of the present utility model also relate to a computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to perform the steps of the method of operating as in the embodiments described above.

The embodiments of the utility model also relate to a computer device comprising a memory and a processor, the memory storing a computer program which, when executed by the processor, causes the processor to perform the steps of the method of operating as in the embodiments described above.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A cooling unit, the cooling unit comprising:

2. A cooling unit according to claim 1, further comprising a heat pump mechanism, said heat exchange side being in communication with said user side via said heat pump mechanism, said heat pump mechanism being provided with a heating mode, said heat pump mechanism being capable of heating liquid flowing from said heat exchange side to said user side when in said heating mode.

3. The cooling unit of claim 1, further comprising:

and the second one-way valve is communicated with the fourth pipeline.

4. The cooling unit of claim 1, further comprising a reservoir tank through which the heat exchange side communicates with the user side, the reservoir tank being capable of storing liquid flowing from the heat exchange side to the user side, and a heating element mounted to the reservoir tank for heating the liquid within the reservoir tank.

5. The cooling unit of claim 1, further comprising a first regulating valve and a second regulating valve, the first regulating valve being in communication with the first conduit and located between the heat exchanger and the compressor, the first regulating valve being configured to regulate the flow rate of the first conduit, the second regulating valve being in communication with the third conduit, the second regulating valve being configured to regulate the flow rate of the third conduit;

6. The cooling unit of claim 1, further comprising:

7. The cooling unit of any one of claims 1-6, further comprising a cooling mechanism comprising a heat exchange core, an inner fan, and an outer fan;

8. The cooling unit of claim 7, wherein the cooling mechanism further comprises a spray assembly for spraying liquid onto the heat exchange core to regulate the temperature of the indoor return air.

9. The cooling unit according to claim 8, wherein the spray assembly comprises a spray pipe, a liquid receiving disc and a spray pump, the spray pipe comprises a first section and a second section which are communicated, one end of the first section is communicated with the liquid receiving disc, the other end of the first section is communicated with the second section, the second section is arranged above the heat exchange core along the gravity direction of the heat exchange core, a nozzle capable of spraying liquid to the heat exchange core is arranged on one side of the second section towards the heat exchange core, the liquid receiving disc is arranged below the heat exchange core along the gravity direction of the heat exchange core, and the spray pump is communicated with the first section and is used for driving the liquid in the liquid receiving disc to flow to the nozzle.

10. The cooling unit of claim 7, further comprising a bypass bellows, the cooling unit having an inlet for the outdoor inlet air to enter the room, the bypass bellows for directing the outdoor outlet air to the inlet so that the outdoor outlet air can mix with the outdoor inlet air.

11. The cooling unit according to claim 10, wherein the condenser and the external fan are both accommodated in the bypass bellows, and a communication hole is formed in the bypass bellows at a position corresponding to the heat exchange core, and the communication hole is used for allowing the outdoor air to enter the bypass bellows.