CN215063107U

CN215063107U - Evaporation cold compression condensing unit

Info

Publication number: CN215063107U
Application number: CN202121567001.6U
Authority: CN
Inventors: 黄新兆; 刘建; 李尚武
Original assignee: Hunan Zhiren Refrigeration Equipment Co ltd
Current assignee: Hunan Zhiren Refrigeration Equipment Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-12-07
Anticipated expiration: 2031-07-09

Abstract

The utility model relates to the technical field of refrigeration equipment, and provides an evaporation cold compression condensing unit, which comprises a box body and a refrigeration system, wherein a refrigerant used in the refrigeration system is R410A, and the refrigeration system comprises a first refrigeration component and a second refrigeration component; the first refrigeration component is arranged in the box body and comprises a scroll compressor, an oil separator, an evaporative condenser, a liquid storage device, a first expansion valve and an economizer; the second refrigeration assembly includes a second expansion valve and an evaporator. The utility model provides a pair of evaporation cold compression condensing unit, the energy consumption is little, area is little.

Description

Evaporation cold compression condensing unit

Technical Field

The utility model relates to a refrigeration plant technical field, concretely relates to evaporation cold compression condensing unit.

Background

In small and medium-sized enterprises such as flour food, catering, marine products and the like, environment-friendly, small-occupied area, economic and energy-saving and rapid refrigeration equipment has larger requirements and development space. Meanwhile, the refrigeration technology also promotes the rapid development of small and compact vortex compression, environment-friendly novel refrigeration, evaporative condensers and other novel technologies and equipment.

The traditional screw type compression refrigerating unit is mostly used by small and medium-sized enterprises such as flour food, catering and marine products at present, the existing novel technology is not used, so the defects of large energy consumption, large occupied area and the like exist, and the development of the small and medium-sized enterprises such as the flour food, the catering and the marine products is limited.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing an evaporation cold compression condensing unit makes its energy consumption little, area little.

In order to achieve the above purpose, the present invention is implemented by the following technical solutions: an evaporative cold compression condensing unit comprises a box body and a refrigeration system, wherein a refrigerant used in the refrigeration system is R410A, and the refrigeration system comprises a first refrigeration component and a second refrigeration component;

the first refrigeration component is arranged in the box body and comprises a scroll compressor, an oil separator, an evaporative condenser, a liquid accumulator, a first expansion valve and an economizer, wherein a refrigerant outlet of the scroll compressor is connected with an inlet of the oil separator, an outlet of the oil separator is connected with an inlet of the evaporative condenser, a water film is formed on the surface of the evaporative condenser, an outlet of the evaporative condenser is connected with an inlet of the liquid accumulator, an outlet of the liquid accumulator is connected with an inlet of the first expansion valve, the economizer is provided with a first inlet, a first outlet, a second inlet and a second outlet, the first inlet is communicated with the first outlet, the first inlet is connected with an outlet of the first expansion valve, and the first outlet is connected with a refrigerant inlet of the scroll compressor, the second inlet is communicated with the second outlet, and the second inlet is connected with the outlet of the liquid storage device;

the second refrigeration assembly comprises a second expansion valve and an evaporator, an inlet of the second expansion valve is connected with the second outlet, an outlet of the second expansion valve is connected with an inlet of the evaporator, and an outlet of the evaporator is connected with a refrigerant inlet of the scroll compressor.

The water distribution system comprises a water collection tank, a water pump and an atomization device, wherein an opening of the water collection tank faces upwards and is located below the evaporative condenser, the water collection tank is fixedly connected with the inner wall of the box, an inlet of the water pump is connected with the bottom of the water collection tank, an outlet of the water pump is connected with an inlet of the atomization device, and the atomization device is used for spraying the surface of the evaporative condenser.

Furthermore, air inlets communicated with the outside are formed in the two sides of the box body, an air outlet communicated with the outside is formed in the top of the box body, and a fan is installed at the air outlet.

And the evaporator condenser is arranged above the evaporator condenser, and the water baffle is fixedly connected with the inner wall of the box body.

Furthermore, an oil content outlet of the oil separator is connected with an oil inlet of the scroll compressor through an oil return pipeline, and an oil filter and an oil level controller are installed on the oil return pipeline.

Further, the first expansion valve and the second expansion valve are both thermostatic expansion valves.

The utility model has the advantages that:

1. the utility model provides a pair of evaporation cold compression condensing unit has realized novel environmental protection refrigerant R410A in the application of evaporation cold compression condensing unit, plays key effect in reducing the unit size, promoting unit working property and COP value comprehensively.

2. The utility model provides a pair of evaporation cold compression condensing unit has realized the application of economic ware at evaporation cold compression condensing unit, and the refrigerant liquid that comes from the reservoir makes the refrigerant of flow direction evaporimeter obtain certain super-cooled rate in order fully to improve system capacity and efficiency through the throttle and the step-down of first expansion valve, plays important effect in the aspect of reducing unit size and energy-conservation.

3. The utility model provides a pair of evaporation cold compression condensing unit, all equipment except the evaporimeter all concentrate on and constitute wholly, form the all-in-one in the box, therefore area is little.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Reference numerals: 10-a box body, 11-an air inlet, 12-an air outlet, 13-a fan, 14-a water baffle, 20-a first refrigerating assembly, 21-a scroll compressor, 22-an oil separator, 23-an evaporative condenser, 24-a liquid reservoir, 25-a first expansion valve, 26-an economizer, 261-a first inlet, 262-a first outlet, 263-a second inlet, 264-a second outlet, 30-a second refrigerating assembly, 31-a second expansion valve, 32-an evaporator, 40-a water distribution system, 41-a water collecting tank, 42-a water pump, 43-an atomizing device, 50-an oil return pipeline, 51-an oil filter, 52-an oil level controller and 60-a control valve.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In this application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or an integral part; can be mechanically connected or connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present application, it is to be understood that the terms "longitudinal," "lateral," "horizontal," "top," "bottom," "upper," "lower," "inner" and "outer" and the like are used in the orientation or positional relationship shown in the drawings, which are used for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1-2, the present invention provides an evaporative cold compression and condensation unit comprising a system 10 and a refrigeration system. The refrigerant used in the refrigeration system is R410A, and the refrigeration system includes a first refrigeration assembly 20 and a second refrigeration assembly 30.

A first refrigeration assembly 20 is disposed within the interior of the system 10, the first refrigeration assembly 20 including a scroll compressor 21, an oil separator 22, an evaporative condenser 23, an accumulator 24, a first expansion valve 25, and an economizer 26. The refrigerant outlet of the scroll compressor 21 is connected to the inlet of the oil separator 22, and the outlet of the oil separator 22 is connected to the inlet of the evaporative condenser 23. A water film is formed on the surface of the evaporative condenser 23, the outlet of the evaporative condenser 23 is connected to the inlet of the liquid reservoir 24, and the outlet of the liquid reservoir 24 is connected to the inlet of the first expansion valve 25. The economizer 26 has a first inlet 261, a first outlet 262, a second inlet 263, and a second outlet 264. The first inlet 261 communicates with the first outlet 262, the first inlet 261 is connected to an outlet of the first expansion valve 25, and the first outlet 262 is connected to a refrigerant inlet of the scroll compressor 21. The second inlet 263 communicates with the second outlet 264, and the second inlet 263 is connected to an outlet of the reservoir 24.

The second refrigeration module 30 includes a second expansion valve 31 and an evaporator 32, an inlet of the second expansion valve 31 is connected to the second outlet 264, an outlet of the second expansion valve 31 is connected to an inlet of the evaporator 32, and an outlet of the evaporator 32 is connected to a refrigerant inlet of the scroll compressor 21.

All of the equipment except the evaporator 32 is integrated into the system 10 to form an integrated unit, thereby occupying a smaller area. Each connecting pipeline of the unit is provided with a control valve 60, wherein the control valve 60 is used for controlling the circulation of the refrigerant in the connecting pipeline.

The specific working process is as follows: the high-temperature and high-pressure R410A vapor is discharged from the refrigerant outlet of the scroll compressor 21 and enters the oil separator 22 for oil-gas separation, which separates a small amount of lubricant oil carried in the high-temperature and high-pressure R410A vapor. The high-temperature and high-pressure R410A vapor from which the lubricating oil has been separated is discharged from the gas separation outlet 221 of the oil separator 22 and enters the evaporative condenser 23, and the high-temperature and high-pressure R410A vapor in the evaporative condenser 23 releases heat to the water film on the surface of the evaporative condenser 23 and is condensed into a low-temperature and high-pressure R410A liquid. The low-temperature high-pressure R410A liquid enters the accumulator 24, is discharged from the accumulator 24, and is divided into two paths, wherein one path of R410A liquid enters the first expansion valve 25, is throttled and reduced to a low-temperature low-pressure R410A refrigerant gas-liquid mixture in the first expansion valve 25, enters the economizer 26 from the first inlet 261, and absorbs heat of the R410A liquid entering from the second inlet 263 and discharged from the second outlet 264 in the economizer 26 to form saturated R410A vapor. Saturated R410A vapor is then discharged from the first outlet 262 and into the scroll compressor 21; the other path of the R410A liquid enters the economizer 26 from the second inlet 263, after releasing heat to the R410A refrigerant gas-liquid mixture in the economizer 26, supercooled R410A liquid is formed, the supercooled R410A liquid is discharged from the second outlet 264, enters the second expansion valve 31, is throttled again and depressurized by the second expansion valve 31, enters the evaporator 32, and forms saturated R410A vapor after the supercooled R410A liquid in the evaporator 32 absorbs the heat of the cooling medium outside the evaporator 32, and the part of the saturated R410A vapor reenters the scroll compressor 21, thereby completing a refrigeration cycle.

R410A is a novel environmental protection refrigerant, and this unit has realized the application of novel environmental protection refrigerant R410A at evaporation cold compression condensing unit, plays key effect in reducing unit size, promoting unit running performance and COP value comprehensively.

In addition, the unit realizes the application of the economizer 26 in an evaporation-cooling compression-condensation unit, the R410A liquid from the liquid storage device 24 is throttled and depressurized by the first expansion valve 25, so that the R410A liquid flowing to the evaporator 32 obtains a certain supercooling degree to fully improve the system capacity and efficiency, and plays an important role in reducing the unit size and saving energy. In the whole unit, the R140A is used for ensuring the safe and environment-friendly operation of the unit, the scroll compressor 21 has a smaller pressure ratio and the performance of the scroll compressor 21 is comprehensively improved, meanwhile, the R410A has a higher latent heat value so that the exhaust temperature of the compressor is far higher than the ambient temperature, the large temperature difference between the refrigerant and water drops and air is more beneficial to heat exchange, and the performance and COP value of the whole unit are improved.

In one embodiment, the water distribution system 40 is disposed inside the system 10, and the water distribution system 40 includes a water collection tank 41, a water pump 42, and an atomization device 43. The opening of the water collection tank 41 faces upward and is located below the evaporative condenser 23, and the water collection tank 41 is fixedly connected with the inner wall of the system 10. An inlet of the water pump 42 is connected with the bottom of the water collecting tank 41, an outlet of the water pump 42 is connected with an inlet of the atomizing device 43, and the atomizing device 43 is used for spraying the surface of the evaporative condenser 23.

When the unit is in operation, the water pump 42 pumps the water in the water collection tank 41 into the atomization device 43, and the atomization device 43 atomizes the water into fine water drops and then uniformly sprays the water drops onto the outer surface of the evaporative condenser 23. A part of the water drops forms a thin water film on the outer surface of the evaporative condenser 23, and the rest drops into the water collection tank 41 to complete the circulation of the water distribution system 40. The water film on the outer surface of the evaporative condenser 23 fully absorbs the heat of the high-temperature and high-pressure R410A steam in the evaporative condenser 23, and then is vaporized into water vapor and discharged to the outside.

In one embodiment, both sides of the system 10 are provided with air inlets 11 communicated with the outside, the top of the system 10 is provided with air outlets 12 communicated with the outside, and fans 13 are installed at the air outlets 12 to form an air circulation system. The fan 13 can quickly discharge the water vapor formed by absorbing heat from the water film on the outer surface of the evaporative condenser 23 to the outside.

In one embodiment, the system further comprises a water baffle 14 disposed above the condenser of the evaporator 32, wherein the water baffle 14 is fixedly attached to the inner wall of the system 10. The water baffle 14 can separate water from steam discharged outdoors, and reduce water loss.

In one embodiment, the oil outlet 222 of the oil separator 22 is connected with the oil inlet of the scroll compressor 21 through an oil return pipe 50, and the oil filter 51 and the oil level controller 52 are installed on the oil return pipe 50. The oil level controller 52 can output an electronic signal to adjust the state in time, thereby ensuring the oil supply safety of the scroll compressor 21, and reducing the damage of the scroll compressor 21 caused by oil shortage in the using process, thereby achieving the purposes of protecting equipment, saving energy and improving efficiency.

In one embodiment, the first expansion valve 25 and the second expansion valve 31 are both thermostatic expansion valves.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An evaporation cold compression condensing unit is characterized in that: the refrigerator comprises a box body and a refrigeration system, wherein a refrigerant used in the refrigeration system is R410A, and the refrigeration system comprises a first refrigeration assembly and a second refrigeration assembly;

2. An evaporative cold compression condensing unit according to claim 1 wherein: the water distribution system comprises a water collection tank, a water pump and an atomization device, wherein an opening of the water collection tank faces upwards and is located below the evaporative condenser, the water collection tank is fixedly connected with the inner wall of the box body, an inlet of the water pump is connected with the bottom of the water collection tank, an outlet of the water pump is connected with an inlet of the atomization device, and the atomization device is used for spraying on the surface of the evaporative condenser.

3. An evaporative cold compression condensing unit according to claim 1 wherein: the air-conditioning cabinet is characterized in that air inlets communicated with the outside are formed in the two sides of the cabinet body, an air outlet communicated with the outside is formed in the top of the cabinet body, and a fan is mounted at the air outlet.

4. An evaporative cold compression condensing unit according to claim 3 wherein: the evaporator condenser is characterized by further comprising a water baffle arranged above the evaporator condenser, and the water baffle is fixedly connected with the inner wall of the box body.

5. An evaporative cold compression condensing unit according to claim 1 wherein: an oil content outlet of the oil separator is connected with an oil inlet of the scroll compressor through an oil return pipeline, and an oil filter and an oil level controller are installed on the oil return pipeline.

6. An evaporative cold compression condensing unit according to claim 1 wherein: the first expansion valve and the second expansion valve are both thermostatic expansion valves.