CN221464106U

CN221464106U - Refrigeration system of freezer

Info

Publication number: CN221464106U
Application number: CN202323518878.8U
Authority: CN
Inventors: 郑利明; 唐源胜; 杨立超; 段志春; 张桂萍; 梁创跃; 黎恺繁; 祖勇
Original assignee: Guangdong Zhongqing Engineering Design Institute Co ltd
Current assignee: Guangdong Zhongqing Engineering Design Institute Co ltd
Priority date: 2023-12-21
Filing date: 2023-12-21
Publication date: 2024-08-02
Anticipated expiration: 2033-12-21

Abstract

The utility model discloses a refrigeration system of a refrigeration house, which comprises a refrigeration house chamber, a compressor, a condenser, a low-pressure circulation barrel and an air cooler, wherein the compressor is provided with a first air outlet; the compressor is provided with a first air inlet, and the air cooler, the low-pressure circulating barrel and the first air inlet are sequentially communicated with each other to form a low-pressure gas loop; the air cooler is used for enabling low-pressure gas formed after the low-temperature low-pressure liquid absorbs heat to flow back to the compressor through the low-pressure circulation barrel; the inside of low pressure circulation bucket is provided with first liquid level meter, and first liquid level meter is used for measuring the stock solution volume of low pressure circulation bucket, and first liquid level meter electricity is connected in first valve, compressor and condenser. The refrigeration system of the refrigeration house provided by the utility model can effectively save energy on the premise of reducing the damage rate of the compressor and the condenser so as to overcome the defects in the prior art.

Description

Refrigeration system of freezer

Technical Field

The utility model relates to the technical field of refrigeration equipment, in particular to a refrigeration system of a refrigeration house.

Background

The cold storage is a constant temperature and humidity storage device which uses an artificial means to create an environment different from the outdoor temperature or humidity and is used for storing foods, chemical industry, medicines, vaccines, scientific experiments and other articles. The refrigerator is generally refrigerated by a refrigerator, and working media with low gasification temperature (such as ammonia, freon and the like) are used as condensate, so that the condensate is evaporated under the conditions of low pressure and mechanical control, and the heat in the refrigerator is absorbed, thereby achieving the purpose of cooling. The most common refrigeration equipment is vapor compression refrigeration, and mainly comprises a compressor, a condenser, a throttle valve, an evaporator and the like.

Refrigeration systems are generally classified into direct cooling and indirect cooling. The direct cooling is to install the evaporator in the cold storage room, and the liquid refrigerant directly absorbs the heat in the cold storage room when passing through the evaporator. The indirect cooling is that the air in the cold storage room is sucked into the cooling device by the blower, and the air is absorbed by the evaporating pipe in the cooling device and cooled, and then flows back into the cold storage room. However, whether direct refrigeration or indirect refrigeration is performed, the high-temperature and high-pressure gas compressed by the compressor is directly sent into the condenser to be condensed into low-temperature and high-pressure liquid, the low-temperature and high-pressure liquid is throttled by the throttle valve and then sent into the evaporator, and the compressor and the condenser are required to continuously work as long as refrigeration demands exist in the process, so that the compressor and the condenser are easy to damage, and meanwhile, energy waste is caused, and energy saving is not facilitated.

Disclosure of utility model

The utility model aims to provide a refrigeration house refrigerating system which can effectively save energy on the premise of reducing the damage rate of a compressor and a condenser so as to overcome the defects in the prior art.

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

The refrigeration system of the refrigeration house comprises a refrigeration house chamber, a compressor, a condenser, a low-pressure circulation barrel and an air cooler, wherein the air cooler is positioned in the refrigeration house chamber, and the compressor, the condenser and the low-pressure circulation barrel are positioned outside the refrigeration house chamber;

The compressor is provided with a first air outlet, and the first air outlet, the condenser, the low-pressure circulating barrel and the air cooler are sequentially communicated with each other to form an outflow pipeline of condensed liquid; the compressor is used for compressing low-pressure gas into high-temperature high-pressure gas, the condenser is used for condensing the high-temperature high-pressure gas into low-temperature high-pressure liquid, the low-pressure circulation barrel is used for throttling the low-temperature high-pressure liquid into low-temperature low-pressure liquid, and the air cooler is used for discharging the low-temperature low-pressure liquid into the refrigerator chamber;

The compressor is provided with a first air inlet, and the air cooler, the low-pressure circulating barrel and the first air inlet are sequentially communicated with each other to form a low-pressure gas loop; the air cooler is used for enabling low-pressure gas formed after low-temperature low-pressure liquid absorbs heat to flow back to the compressor through the low-pressure circulating barrel;

A first valve is arranged between the low-pressure circulation barrel and the compressor and is used for opening and closing an air outlet of the low-pressure circulation barrel;

The inside of low pressure circulation bucket is provided with first liquid level meter, first liquid level meter is used for measuring the stock solution volume of low pressure circulation bucket, just first liquid level meter electric coupling in first valve the compressor with the condenser.

Further, the device also comprises a liquid storage device and a flow meter, wherein a liquid outlet of the condenser, the liquid storage device and a liquid inlet of the low-pressure circulation barrel are communicated with each other, and the liquid storage device is used for storing low-temperature high-pressure liquid;

The flowmeter is located outside the liquid reservoir, the flowmeter with the liquid reservoir intercommunication each other, the flowmeter is used for measuring the stock solution volume of liquid reservoir, just the flowmeter electricity link in first valve, compressor and the condenser.

Further, the device also comprises an economizer and a second liquid level instrument, wherein a liquid outlet of the liquid storage device, the economizer and a liquid inlet of the low-pressure circulating barrel are communicated with each other, and the economizer is used for storing low-pressure liquid;

A second level gauge is located inside the economizer, the second level gauge is for measuring a stock solution amount of the economizer, and the second level gauge is electrically coupled to the first valve, the compressor, and the condenser.

Further, the refrigerator room 1 is provided with a plurality of rows of air coolers, and the air coolers are sequentially arranged from top to bottom;

the air cooler is provided with a plurality of evaporators, and the evaporators are arranged in parallel.

Further, the gas pipeline system also comprises a three-way valve and a gas conveying main pipe, wherein the three-way valve is provided with a first interface, a second interface and a third interface; the first interface is connected with the first air outlet, the second interface is connected with the air inlet of the condenser, and the third interface is connected with the air inlet of the main gas conveying pipe;

The gas conveying main pipe is provided with a first outlet, the first outlet is connected with the air inlet of the air cooler, and the gas conveying main pipe is used for conveying the high-temperature and high-pressure gas compressed by the compressor to the air cooler.

Further, the device also comprises a gas conveying branch pipe and a heat recoverer; the heat recoverer comprises a water storage tank for storing cold water;

The gas conveying main pipe is provided with a second outlet, the gas conveying branch pipe and the gas inlet of the water storage tank are sequentially communicated with each other, and high-temperature and high-pressure gas in the gas conveying main pipe is conveyed to the water storage tank through the gas conveying branch pipe and exchanges heat with cold water in the water storage tank;

a second valve is arranged between the gas conveying branch pipe and the water storage tank and is used for opening and closing the gas conveying branch pipe.

Further, the heat recoverer further comprises a cold water supply pipe and a hot water supply pipe; the water outlet of the cold water supply pipe, the water storage tank and the water inlet of the hot water supply pipe are sequentially communicated with each other; the cold water supply pipe is used for providing cold water; the hot water supply pipe is used for discharging the heated hot water;

the cold water supply pipe is provided with a third valve, and the third valve is used for opening and closing the cold water supply pipe.

Further, the low-pressure circulating barrel comprises a pressure gauge, wherein the pressure gauge is arranged at the top of the low-pressure circulating barrel and is used for monitoring the pressure of low-temperature low-pressure liquid in the low-pressure circulating barrel.

Further, a fourth valve is arranged between the low-pressure circulation barrel and the compressor and used for opening and closing an air outlet of the low-pressure circulation barrel.

Further, the number of the refrigeration house chambers is three, and the three refrigeration house chambers are arranged in parallel.

The technical scheme provided by the embodiment of the application can have the following beneficial effects: by arranging the low-pressure circulation barrel and the first liquid level instrument, on one hand, the use amount of the low-temperature low-pressure liquid can be conveniently determined according to actual use requirements, and meanwhile, the transportation of the low-temperature low-pressure liquid is buffered, so that the whole operation of the equipment is more smooth; on the other hand, even under the condition of continuous refrigeration, the compressor and the condenser do not need to work continuously, so that the damage rate of the compressor and the condenser is reduced, and meanwhile, the energy is saved.

Drawings

Fig. 1 is a schematic structural diagram of a refrigeration system for a refrigerator according to the present utility model.

Fig. 2 is an enlarged view of a portion a of fig. 1 of a refrigeration system for a refrigerator according to the present utility model.

Fig. 3 is an enlarged view of a portion B of fig. 1 of a freezer refrigeration system according to the present utility model.

Wherein: the refrigerator comprises a refrigerator room 1, a compressor 2, a condenser 3, a low-pressure circulation barrel 4, a first valve 41, a pressure gauge 42, a fourth valve 43, an air cooler 5, an evaporator 51, a first liquid level meter 6, a liquid storage 7, a flow meter 8, an economizer 9, a second liquid level meter 10, a three-way valve 11, a main gas conveying pipe 12, a branch gas conveying pipe 13, a second valve 131, a heat recoverer 14, a water storage tank 141, a cold water supply pipe 142, a third valve 1421 and a hot water supply pipe 143.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The technical scheme provides a refrigeration system of a refrigeration house, which comprises a refrigeration house chamber 1, a compressor 2, a condenser 3, a low-pressure circulation barrel 4 and an air cooler 5, wherein the air cooler 5 is positioned in the refrigeration house chamber 1, and the compressor 2, the condenser 3 and the low-pressure circulation barrel 4 are positioned outside the refrigeration house chamber 1;

The compressor 2 is provided with a first air outlet, and the first air outlet, the condenser 3, the low-pressure circulation barrel 4 and the air cooler 5 are sequentially communicated with each other and form an outflow pipeline of condensed liquid; the compressor 2 is used for compressing low-pressure gas into high-temperature high-pressure gas, the condenser 3 is used for condensing the high-temperature high-pressure gas into low-temperature high-pressure liquid, the low-pressure circulation barrel 4 is used for throttling the low-temperature high-pressure liquid into low-temperature low-pressure liquid, and the air cooler 5 is used for discharging the low-temperature low-pressure liquid into the refrigerator room 1;

The compressor 2 is provided with a first air inlet, and the air cooler 5, the low-pressure circulation barrel 4 and the first air inlet are sequentially communicated with each other to form a low-pressure gas loop; the air cooler 5 is used for refluxing low-pressure gas formed after absorbing heat of low-temperature low-pressure liquid to the compressor 2 through the low-pressure circulation barrel 4;

A first valve 41 is arranged between the low-pressure circulation barrel 4 and the compressor 2, and the first valve 41 is used for opening and closing an air outlet of the low-pressure circulation barrel 4;

The low pressure circulation tank 4 is internally provided with a first liquid level meter 6, the first liquid level meter 6 is used for measuring the liquid storage amount of the low pressure circulation tank 4, and the first liquid level meter 6 is electrically connected with the first valve 41, the compressor 2 and the condenser 3.

In order to reduce the damage rate of the compressor and the condenser and save energy, the technical scheme provides a refrigeration system of a refrigeration house, which comprises a refrigeration house chamber 1, a compressor 2, a condenser 3, a low-pressure circulation barrel 4 and an air cooler 5, wherein the compressor 2 is provided with a first air outlet (not labeled in the figure), and the first air outlet, the condenser 3, the low-pressure circulation barrel 4 and the air cooler 5 are sequentially communicated with each other and form an outflow pipeline of condensed liquid; the compressor 2 is used for compressing low-pressure gas into high-temperature high-pressure gas, the condenser 3 is used for condensing the high-temperature high-pressure gas into low-temperature high-pressure liquid, the low-pressure circulation barrel 4 is used for throttling the low-temperature high-pressure liquid into low-temperature low-pressure liquid and storing the low-temperature low-pressure liquid, the low-temperature low-pressure liquid flows into the air cooler 5, the air cooler 5 is used for discharging the low-temperature low-pressure liquid into the refrigerator chamber 1, and the low-temperature low-pressure liquid absorbs air heat in the refrigerator chamber 1 and is vaporized into low-pressure gas. It should be noted that, the refrigeration house 1, the compressor 2, the condenser 3, the low-pressure circulation tank 4 and the air cooler 5 in the present technical solution are conventional production and preparation in the refrigeration field, and specific structures of the existing devices are not described herein.

The condensed liquid may flow between the condenser 3, the low-pressure circulation tank 4, and the air cooler 5 in this order by gravity, or may flow in this order by a transfer pump, which is not limited.

Further, the compressor 2 is provided with a first air inlet, and the air cooler 5, the low-pressure circulation barrel 4 and the first air inlet are sequentially communicated with each other to form a low-pressure gas loop; the air cooler 5 is used for refluxing low-pressure gas formed after absorbing heat of low-temperature low-pressure liquid to the compressor 2 through the low-pressure circulation barrel 4, the refluxed low-pressure gas is continuously compressed into high-temperature high-pressure gas by the compressor 2, the high-temperature high-pressure gas is continuously refrigerated into low-temperature low-pressure liquid through the condenser 3, the low-temperature low-pressure liquid is conveyed to the air cooler 5 through the low-pressure circulation barrel 4, and the low-temperature low-pressure liquid is discharged into the refrigerator chamber 1 through the air cooler 5, so that the reciprocating circulation is facilitated, and the refrigerating effect of the refrigerator chamber 1 is ensured. The low-pressure gas after gasification may be returned to the compressor 2 by a pressure difference, or may be returned to the compressor 2 by a transfer pump, and is not limited herein.

Still further, the inside of the low pressure circulation tank 4 is provided with a first level gauge 6, the first level gauge 6 is used to measure the liquid storage amount of the low pressure circulation tank 4, and the first level gauge 6 is electrically coupled to the first valve 41, the compressor 2, and the condenser 3.

In one embodiment of the present technical solution, the working process is as follows: the first valve 41, the compressor 2 and the condenser 3 are arranged at the first liquid level meter 6, when the liquid storage amount of the low-pressure circulation barrel 4 reaches the closing threshold, the first valve 41, the compressor 2 and the condenser 3 are closed, namely, the compressor 2 and the condenser 3 are in a rest state at the moment, low-temperature low-pressure liquid stored in the low-pressure circulation barrel 4 flows into the air cooler 5, and the low-pressure gas is temporarily stored in the low-pressure circulation barrel 4; when the liquid storage amount of the low pressure circulation tank 4 does not reach the closing threshold value, the first valve 41, the compressor 2 and the condenser 3 are opened, i.e., the compressor 2 and the condenser 3 are in an operating state at this time.

According to the technical scheme, the low-pressure circulation barrel 4 and the first liquid level instrument 6 are arranged, so that the use amount of low-temperature low-pressure liquid can be determined according to actual use requirements, meanwhile, the transportation of the low-temperature low-pressure liquid is buffered, and the whole operation smoothness of the equipment is facilitated; on the other hand, even under the condition of continuous refrigeration, the compressor 2 and the condenser 3 do not need to work continuously, so that the damage rate of the compressor 2 and the condenser 3 is reduced, and meanwhile, energy sources are saved.

Further, the condenser further comprises a liquid storage device 7 and a flow meter 8, wherein a liquid outlet of the condenser 3, the liquid storage device 7 and a liquid inlet of the low-pressure circulation barrel 4 are communicated with each other, and the liquid storage device 7 is used for storing low-temperature high-pressure liquid;

The flowmeter 8 is located outside the liquid storage 7, the flowmeter 8 is communicated with the liquid storage 7, the flowmeter 8 is used for measuring the liquid storage amount of the liquid storage 7, and the flowmeter 8 is electrically connected to the first valve 41, the compressor 2 and the condenser 3.

In a preferred embodiment of the present solution, the flow meter 8 is used for measuring the liquid storage amount of the liquid reservoir 7, and the flow meter 8 is electrically connected to the first valve 41, the compressor 2 and the condenser 3, and the specific working process is as follows: the method comprises the steps that a first valve 41, a closing threshold value of a compressor 2 and a closing threshold value of a condenser 3 are set on a flowmeter 8, when the liquid storage amount of a liquid storage device 7 reaches the closing threshold value, the first valve 41, the compressor 2 and the condenser 3 are closed, namely, at the moment, the compressor 2 and the condenser 3 are in a rest state, low-temperature low-pressure liquid stored in a low-pressure circulation barrel 4 flows into an air cooler 5, and low-pressure gas temporarily exists in the low-pressure circulation barrel 4; when the liquid storage amount of the liquid reservoir 7 does not reach the closing threshold, the first valve 41, the compressor 2 and the condenser 3 are opened, i.e. the compressor 2 and the condenser 3 are in operation at this time.

In the embodiment, the liquid storage device 7 and the flow meter 8 are arranged, so that the transportation of low-temperature high-pressure liquid is buffered, and the running smoothness of the equipment is improved; meanwhile, under the condition of continuous refrigeration, the rest time of the compressor 2 and the condenser 3 is prolonged, the damage rate is further reduced, and meanwhile, energy is saved.

Further stated, the device also comprises an economizer 9 and a second liquid level meter 10, the liquid outlet of the liquid storage device 7, the economizer 9 and the liquid inlet of the low-pressure circulation barrel 4 are communicated with each other, and the economizer 9 is used for storing low-pressure liquid;

a second level gauge 10 is located inside the economizer 9, the second level gauge 10 is used to measure the stock solution amount of the economizer 9, and the second level gauge 10 is electrically coupled to the first valve 41, the compressor 2 and the condenser 3.

In a preferred embodiment of the present solution, the second level gauge 10 is used to measure the stock volume of the economizer 9; the second level gauge 10 is electrically coupled to the first valve 41, the compressor 2 and the condenser 3, and its specific working process is as follows: the closing threshold values of the first valve 41, the compressor 2 and the condenser 3 are arranged on the second liquid level meter 10, when the liquid storage amount of the economizer 9 reaches the closing threshold value, the first valve 41, the compressor 2 and the condenser 3 are closed, namely, the compressor 2 and the condenser 3 are in a rest state at the moment, low-temperature low-pressure liquid stored in the low-pressure circulation barrel 4 flows into the air cooler 5, and the low-pressure gas temporarily exists in the low-pressure circulation barrel 4; when the stored fluid amount of the economizer 9 does not reach the closing threshold, the first valve 41, the compressor 2 and the condenser 3 are opened, i.e. the compressor 2 and the condenser 3 are now in operation.

In the embodiment, the economizer 9 and the second liquid level meter 10 are arranged, so that the transportation of the low-temperature high-pressure liquid is further buffered, and the running smoothness of the equipment is further improved; meanwhile, even under the condition of continuous refrigeration, the compressor 2 and the condenser 3 do not need to work continuously, the rest time of the compressor 2 and the condenser 3 is prolonged, the damage rate is further reduced, and meanwhile, energy is saved.

Further describing, the refrigerator room 1 is provided with a plurality of rows of air coolers 5, and the air coolers 5 are arranged in sequence from top to bottom;

A plurality of evaporators 51 are provided in the air cooler 5 in one row, and the evaporators 51 are arranged in parallel.

In a preferred embodiment of the present invention, the provision of a plurality of air coolers 5 and a plurality of evaporators 51 is advantageous for further improving the refrigerating effect of the refrigerator compartment 1.

Further, the gas pipeline system further comprises a three-way valve 11 and a gas conveying main pipe 12, wherein the three-way valve 11 is provided with a first interface, a second interface and a third interface; the first interface is connected with the first air outlet, the second interface is connected with the air inlet of the condenser 3, and the third interface is connected with the air inlet of the main gas conveying pipe 12;

The gas delivery main pipe 12 is provided with a first outlet, the first outlet is connected with the air inlet of the air cooler 5, and the gas delivery main pipe 12 is used for delivering the high-temperature and high-pressure gas compressed by the compressor 2 to the air cooler 5.

Because the evaporator 51 absorbs heat and refrigerates, the surface of the evaporator is easy to frost, which affects the conduction and emission of the cold of the evaporator 51 and finally affects the refrigerating effect. When the thickness of the frost layer or the ice layer on the surface of the evaporator 5 reaches a certain degree, the refrigerating efficiency is even reduced to below 30%, resulting in a large waste of electric energy and shortening the service life of the refrigerating system. Therefore, in a preferred embodiment of the present technical solution, by providing the three-way valve 11 and the gas delivery main pipe 12, when the evaporator 5 needs defrosting, the third interface is opened, the second interface is closed, and the high-temperature and high-pressure gas discharged by the compressor 2 dissipates heat through the evaporator 5, and at this time, the evaporator 5 blows hot air to defrost; when refrigeration is needed, the second interface is opened, the third interface is closed, and the high-temperature and high-pressure gas discharged by the compressor 2 can be condensed into low-temperature and high-pressure liquid through the condenser 3.

Further illustratively, also includes a gas delivery manifold 13 and a heat recovery 14; the heat recoverer 14 includes a water storage tank 141, the water storage tank 141 for storing cold water;

The gas conveying main pipe 12 is provided with a second outlet, the gas conveying branch pipe 13 and the gas inlet of the water storage tank 141 are sequentially communicated with each other, and high-temperature and high-pressure gas in the gas conveying main pipe 12 is conveyed to the water storage tank 141 through the gas conveying branch pipe 13 and exchanges heat with cold water in the water storage tank 141;

A second valve 131 is provided between the gas delivery branch 13 and the water tank 141, and the second valve 131 is used for opening and closing the gas delivery branch 13.

In a preferred embodiment of the present technical solution, by providing the gas delivery branch pipe 13 and the heat recoverer 14, the heat recoverer 14 includes the water storage tank 141, and the high-temperature and high-pressure gas in the gas delivery main pipe 12 is delivered to the water storage tank 141 through the gas delivery branch pipe 13 and exchanges heat with cold water in the water storage tank 141, so that the cold water in the water storage tank 141 is heated into hot water, and the heat energy utilization rate is improved.

Further illustratively, the heat recuperator 14 further includes a cold water supply pipe 142 and a hot water supply pipe 143; the water outlet of the cold water supply pipe 142, the water storage tank 141 and the water inlet of the hot water supply pipe 143 are sequentially communicated with each other; the cold water supply pipe 142 is used for supplying cold water; the hot water supply pipe 143 is used for discharging the heated hot water;

The cold water supply pipe 142 is provided with a third valve 1421, and the third valve 1421 is used for opening and closing the cold water supply pipe 142.

In a preferred embodiment of the present disclosure, by providing the cold water supply pipe 142 and the hot water supply pipe 143, the cold water supply pipe 142 can supply cold water to the water storage tank 141, and the cold water is heated by the heat energy emitted by the high-temperature and high-pressure gas and becomes hot water, which is more beneficial to fully utilizing the heat energy of the high-temperature and high-pressure gas. The hot water discharged from the hot water supply pipe 143 can be used as bath water or domestic water for residents, and the time for which the third valve 1421 is opened or closed can be controlled according to the temperature of the hot water required, thereby improving the applicability of the apparatus.

Further, the device further comprises a pressure gauge 42, wherein the pressure gauge 42 is installed at the top of the low-pressure circulation barrel 4, and the pressure gauge 42 is used for monitoring the pressure of the low-temperature low-pressure liquid in the low-pressure circulation barrel 4.

When a clogging situation occurs, the pressure of the low-temperature and low-pressure liquid in the low-pressure circulation tank 4 becomes small. Therefore, in a preferred embodiment of the present technical solution, the pressure gauge 32 is used to monitor the pressure of the low-temperature and low-pressure liquid, and the problem is found in time through the change of the pressure, so as to repair or maintain the system, and improve the reliability of the system.

Further, a fourth valve 43 is provided between the low pressure circulation tank 4 and the compressor 2, and the fourth valve 43 is used for opening and closing the air outlet of the low pressure circulation tank 4.

In a preferred embodiment of the present solution, by providing a fourth valve 43 between the low pressure circulation tank 4 and the compressor 2, the opening of the fourth valve 43 can be used to increase the reliability of the apparatus in case of failure of the first valve 41.

Further, the number of the refrigerator chambers 1 is three, and the three refrigerator chambers 1 are arranged in parallel.

In a preferred embodiment of the present solution, it is advantageous to further increase the refrigeration efficiency by providing three freezer compartments 1.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims

1. A freezer refrigerating system, its characterized in that: the refrigeration system comprises a refrigeration house room, a compressor, a condenser, a low-pressure circulation barrel and an air cooler, wherein the air cooler is positioned in the refrigeration house room, and the compressor, the condenser and the low-pressure circulation barrel are positioned outside the refrigeration house room;

2. The freezer refrigeration system of claim 1, wherein: the low-pressure circulating barrel comprises a condenser, a liquid inlet of the condenser, a liquid outlet of the condenser, a liquid inlet of the low-pressure circulating barrel and a liquid outlet of the condenser, wherein the liquid inlet of the condenser, the liquid outlet of the liquid inlet of the condenser and the liquid inlet of the low-pressure circulating barrel are communicated with each other;

3. A freezer refrigeration system as set forth in claim 2 wherein: the device also comprises an economizer and a second liquid level instrument, wherein a liquid outlet of the liquid storage device, the economizer and a liquid inlet of the low-pressure circulating barrel are communicated with each other, and the economizer is used for storing low-pressure liquid;

4. The freezer refrigeration system of claim 1, wherein: the refrigerator room is provided with a plurality of rows of air coolers which are sequentially arranged from top to bottom;

5. The freezer refrigeration system of claim 4, wherein: the gas delivery system also comprises a three-way valve and a gas delivery main pipe, wherein the three-way valve is provided with a first interface, a second interface and a third interface; the first interface is connected with the first air outlet, the second interface is connected with the air inlet of the condenser, and the third interface is connected with the air inlet of the main gas conveying pipe;

6. The freezer refrigeration system of claim 5, wherein: the device also comprises a gas conveying branch pipe and a heat recoverer; the heat recoverer comprises a water storage tank for storing cold water;

7. The freezer refrigeration system of claim 6, wherein: the heat recoverer further comprises a cold water supply pipe and a hot water supply pipe; the water outlet of the cold water supply pipe, the water storage tank and the water inlet of the hot water supply pipe are sequentially communicated with each other; the cold water supply pipe is used for providing cold water; the hot water supply pipe is used for discharging the heated hot water;

8. The freezer refrigeration system of claim 1, wherein: the low-pressure circulating barrel comprises a low-pressure circulating barrel body, and is characterized by further comprising a pressure gauge which is arranged at the top of the low-pressure circulating barrel body and used for monitoring the pressure of low-temperature low-pressure liquid in the low-pressure circulating barrel body.

9. The freezer refrigeration system of claim 1, wherein: a fourth valve is arranged between the low-pressure circulation barrel and the compressor and used for opening and closing an air outlet of the low-pressure circulation barrel.

10. The freezer refrigeration system of claim 1, wherein: the number of the refrigeration house chambers is three, and the three refrigeration house chambers are arranged in parallel.