CN210425608U

CN210425608U - Full-effect double-channel refrigeration humidity control unit

Info

Publication number: CN210425608U
Application number: CN201921475361.6U
Authority: CN
Inventors: 王晖; 安静; 李鸿廷; 李汉高
Original assignee: Beijing Zhongkelanze Technology Co Ltd
Current assignee: Beijing Zhongkelanze Technology Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-04-28
Anticipated expiration: 2029-09-05

Abstract

The utility model discloses a wet unit of binary channels refrigeration accuse all can be imitated, including the route of two circulations, be route I and route II respectively, the equipment that relates on route I is including liquid storage pot, expansion valve I, evaporimeter, vapour and liquid separator, compressor and the condenser of pipe connection in proper order, and the equipment that relates on route II is including the balancer, expansion valve II, evaporimeter, vapour and liquid separator, compressor and the condenser of pipe connection in proper order, the entry end of balancer and the entry end of condenser connect in parallel on the upstream pipeline of condenser, and expansion valve II's exit end and expansion valve I's exit end connect in the upstream pipeline of evaporimeter. The utility model provides a binary channels refrigeration accuse wet unit is imitated to this kind all-round, conventional constant temperature and humidity unit relatively has eliminated the energy waste of thermal compensation, can realize the control of humiture, and control accuracy is higher relatively, and connected mode is simple, does not be equipped with three-way valve or cross valve etc. easy to maintain reduces the amount of labour.

Description

Full-effect double-channel refrigeration humidity control unit

Technical Field

The utility model belongs to the technical field of accurate accuse temperature accuse humidity application in the control of laboratory constant temperature and humidity, concretely relates to binary channels refrigeration accuse wet unit is imitated to all-round.

Background

At present, a large-scale cold-heat balance unit which can be used in industrial occasions is mostly a cold water system, the system is complex, in the application of a small experimental space, the control and the equipment configuration are too complicated, a three-way electromagnetic valve and a four-way valve are needed in the system, the three-way electromagnetic valve and the four-way valve all belong to vulnerable parts, and the failure probability is high.

The patent literature discloses a variable air volume refrigerating and dehumidifying device, which comprises an outdoor condensing device, an indoor compressor unit and a heat balance evaporator which are fixedly installed outdoors, indoors and in a low-temperature room respectively, and the outdoor condensing device, the indoor compressor unit and the heat balance evaporator are communicated with each other. The heat balance evaporator is composed of a variable speed fan, an indoor heat balance device and an evaporator which are fixedly arranged in the integral casing from front to back in sequence. The indoor compressor unit consists of a compressor and a liquid storage device, the output end of the liquid storage device is connected with the input end of the evaporator, and the input end of the liquid storage device is connected with the output end of the outdoor condensing device and the output end of the indoor thermal balancer through a tee joint; the input end of the compressor is connected with the output end of the evaporator, and the output end of the compressor is connected with the input end of the outdoor condensing device and the input end of the indoor thermal balancer through the two-position three-way valve. The output end of the liquid storage device can be connected with a filter in series, and the input end of the evaporator can be connected with an electronic expansion valve in series. The device realizes the compensation between the cold quantity required by refrigeration and the heat quantity required by dehumidification, and improves the heat efficiency of the system; the device realizes the real-time control of temperature and humidity through the rotational speed of control fan.

This refrigeration dehydrating unit structure is loaded down with trivial details to used a tee bend and a two three-way valve, as can know above, these two kinds of three-way valves are the vulnerable part in the pipe-line system, and the fault rate is high, needs regular maintenance, increases staff's the amount of labour of after-sales service.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that above-mentioned prior art exists, the utility model provides a wet unit of binary channels refrigeration accuse is imitated to all-round, conventional constant temperature and humidity unit relatively has eliminated the energy waste of thermal compensation, can realize the synchro control of humiture, and control accuracy is higher relatively, and connected mode is simple, does not be equipped with valves such as three-way valve or cross valve, easy to maintain reduces the amount of labour.

The utility model discloses the technical scheme who adopts does: the utility model provides a wet unit of binary channels refrigeration accuse all can imitate, includes the route of two circulations, is route I and route II respectively, and the equipment that relates to on route I includes liquid storage pot, expansion valve I, evaporimeter, vapour and liquid separator, compressor and the condenser of tube coupling in proper order, and the equipment that relates on route II includes equalizer, expansion valve II, evaporimeter, vapour and liquid separator, the compressor of tube coupling in proper order, the entry end of equalizer and the entry end of condenser connect in parallel on the upstream pipeline of condenser, and expansion valve II's exit end and expansion valve I's exit end connect in parallel in the upstream pipeline of evaporimeter.

Further, the unit also comprises an outer fan, and the outer fan is arranged at the condenser of the outdoor unit.

Furthermore, the unit also comprises an inner fan, wherein the inner fan is arranged at the evaporator and the balancer of the indoor unit, and can cool the evaporator and the balancer at the same time.

Further, the compressor is connected with a pressure controller.

Furthermore, the indoor unit part of the unit is provided with a temperature sensor and a humidity sensor in the return air area, and the temperature sensor and the humidity sensor are in communication connection with the controller.

Further, the compressor is a scroll compressor.

Further, the balancer, the evaporator, the expansion valve I, the expansion valve II and the inner fan are assembled into a modular indoor unit.

Further, the compressor, the gas-liquid separator, the liquid storage tank, the pressure controller, the condenser, the liquid outlet pipe and the outer fan are assembled into a modular outdoor unit.

The working principle is as follows: 1. the load in the laboratory is normal, and refrigerating unit normal work, compressor exhaust passes through the condenser condensation and becomes high-pressure liquid.

2. The high-pressure liquid refrigerant passes through the passage I and is throttled by the expansion valve I to become a low-temperature gas-liquid mixture.

3. The gas-liquid mixed refrigerant enters an evaporator, absorbs heat and evaporates to be low-temperature gas, and meanwhile indoor circulating air is sent into a laboratory after being cooled to adjust the temperature and humidity in the laboratory.

4. The low-temperature gas from the evaporator returns to the compressor, the compressor does work and compresses the gas, and then the gas is discharged, and the next refrigeration cycle is continued.

5. When the module type indoor unit carries out accurate temperature and humidity control, the on-off state of the electromagnetic valves of the two passages is automatically controlled through the intelligent control system, and the flow direction proportion of the refrigerant to the two passages is adjusted: one part of the refrigerant directly flows through a passage I, is condensed by a condenser, and then enters an evaporator by throttling of an expansion valve I; the other part of the air enters the balancer through the passage II, at the moment, the indoor circulating air is cooled and dehumidified by the evaporator, and when the air continues to pass through the balancer, the air is heated after absorbing the energy of the refrigerant, so that the air temperature and humidity precision is controlled, and the refrigerant after being cooled and condensed by the passage II continues to return to the conventional refrigeration cycle process through the expansion valve II.

6. The air temperature and humidity can be accurately controlled by intelligently controlling and adjusting the flow ratio of the refrigerants in the passage I and the passage II, and meanwhile, an external auxiliary heat source is not needed to participate in temperature adjustment and control. On one hand, the exhaust energy of the compressor is completely utilized, and the energy consumption of a laboratory is reduced; on the other hand, the temperature and humidity control precision is effectively guaranteed in a double-channel proportion adjusting mode.

7. The unit control is intelligently controlled by an upper computer, and the on-off state of the two channels is adjusted through circulating air temperature and humidity parameters collected by the temperature and humidity sensor, so that the refrigerating capacity and the heat compensation limit are adjusted.

8. The electromagnetic valves are arranged on the branches of the two channels behind the exhaust of the compressor, the passage I is a normally open electromagnetic valve, the passage II is a normally closed electromagnetic valve, and the temperature and humidity precision control can be realized by the on-off regulation of the electromagnetic valves.

The utility model relates to a wet unit of binary channels refrigeration accuse all-round effect has following beneficial effect:

1. the temperature control precision is improved to +/-0.2 ℃.

2. The temperature precision can be accurately controlled, and meanwhile, the humidity precision can be controlled to be +/-3%, which is the point that other refrigeration equipment or refrigeration systems cannot be stably realized.

3. The in-process of control humiture equilibrium need not other heat auxiliary assembly work compensations, promptly: energy sources except for the working of the compressor are not needed, and compared with a conventional constant temperature and humidity unit, the energy waste caused by electric heating temperature rise compensation is eliminated.

Drawings

FIG. 1 is a system schematic diagram of the full energy efficiency dual channel refrigeration humidity control unit of the present invention;

in the figure: 1-a vapor-liquid separator; 2-pressure controller: 3-a compressor; 4-a condenser; 5-an external fan; 6-a liquid storage tank; 7-expansion valve I; 8-expansion valve II; 9-an evaporator; 10-a balancer; 11-an inner fan; a-pathway I; b-pathway II.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1, the all-effect dual-channel refrigeration and humidity control unit comprises two circulating passages, namely a passage Ia and a passage IIb, wherein equipment related to the passage I comprises a liquid storage tank 6, an expansion valve I7, an evaporator 9, a vapor-liquid separator 1, a compressor 3 and a condenser 4 which are sequentially connected through pipelines, equipment related to the passage IIb comprises a balancer 10, an expansion valve II8, the evaporator 9, the vapor-liquid separator 1 and the compressor 3 which are sequentially connected through pipelines, the inlet end of the balancer 10 and the inlet end of the condenser 4 are connected to an upstream pipeline of the condenser 4 in parallel, and the outlet end of the expansion valve II8 and the outlet end of the expansion valve I7 are connected to an upstream pipeline of the evaporator 9 in parallel. The unit control is intelligently controlled by an upper computer, and the on-off state of the electromagnetic valves on the two channels is adjusted through circulating air temperature and humidity parameters collected by the temperature and humidity sensor, so that the refrigerating capacity and the heat compensation limit are adjusted. Electromagnetic valves are respectively arranged on branches of the two paths of channels behind the exhaust of the compressor, an electromagnetic valve I arranged on a path Ia is a normally open electromagnetic valve, an electromagnetic valve II arranged on a path IIb is a normally closed electromagnetic valve, and the temperature and humidity precision control can be realized through the open-close regulation of the electromagnetic valves.

The balancer 10, the evaporator 9, the expansion valve I7, the expansion valve II8 and the inner fan are assembled into a modular indoor unit. The compressor, the gas-liquid separator 1, the liquid storage tank, the pressure controller 2, the condenser, the liquid outlet pipe and the external fan 5 are assembled into a modular outdoor unit.

The unit further comprises an external fan 5, and the external fan 5 is arranged at the outdoor unit condenser 4.

The unit also comprises an inner fan 11, and the inner fan 11 is arranged at the evaporator and the balancer of the indoor unit.

The compressor 3 is connected with a pressure controller.

And a return air area of the indoor unit part is provided with a temperature sensor and a humidity sensor which are in communication connection with the controller.

The compressor 3 is a scroll compressor.

The expansion valve is an important part in the refrigeration system, and the expansion valve I and the expansion valve II are respectively arranged on a pipeline connecting the liquid storage tank and the evaporator. The expansion valve enables the medium-temperature high-pressure liquid refrigerant to be low-temperature low-pressure wet steam through throttling, then the refrigerant absorbs heat in the evaporator to achieve the refrigeration effect, and the expansion valve controls the flow of the valve through the change of the superheat degree of the tail end of the evaporator to prevent the insufficient utilization of the area of the evaporator.

The balancer is used as a condensing heat exchanger arranged on the indoor unit part, one function of the balancer is the refrigerant in the channel II, the other function is the most main function, the balancer can be used as an energy compensation source for controlling the temperature of circulating air, and replaces an electric heating part in a conventional constant temperature and humidity unit, so that the energy-saving effect is embodied.

The utility model relates to a binary channels refrigeration accuse wet unit is imitated to this kind all-round, the energy waste of thermal compensation has been eliminated to conventional constant temperature and humidity unit relatively, can realize the control of humiture, and control accuracy is higher relatively, and connected mode is simple, does not be equipped with three-way valve or cross valve etc. easy to maintain. The method has the following specific beneficial effects:

1. the temperature control precision is improved to +/-0.2 ℃.

The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the auxiliary fittings or structures thereof fall within the protection scope of the present invention.

Claims

1. The utility model provides a wet unit of binary channels refrigeration accuse all can imitate which characterized in that: the device comprises a liquid storage tank, an expansion valve I, an evaporator, a vapor-liquid separator, a compressor and a condenser which are sequentially connected through pipelines, wherein the liquid storage tank, the expansion valve I, the evaporator, the vapor-liquid separator, the compressor and the condenser are sequentially connected through pipelines, the device related to the passage I comprises a balancer, an expansion valve II, the evaporator, the vapor-liquid separator, the compressor and the condenser which are sequentially connected through pipelines, the inlet end of the balancer is connected with the inlet end of the condenser in parallel on an upstream pipeline of the condenser, and the outlet end of the expansion valve II is connected with the outlet end of the expansion valve I in parallel on an.

2. The full-effect dual-channel refrigeration and humidity control unit as claimed in claim 1, wherein: the unit also comprises an outer fan, and the outer fan is arranged at the condenser.

3. The full-effect dual-channel refrigeration and humidity control unit as claimed in claim 1, wherein: the unit also comprises an inner fan, and the inner fan is arranged at the evaporator and the balancer.

4. The full-effect dual-channel refrigeration and humidity control unit as claimed in claim 2, wherein: the compressor is connected with the pressure controller.

5. The full-effect dual-channel refrigeration and humidity control unit as claimed in claim 1, wherein: the unit is equipped with temperature sensor and humidity transducer in the return air district, temperature sensor and humidity transducer and controller communication connection.

6. The full-effect dual-channel refrigeration and humidity control unit as claimed in claim 1, wherein: the compressor is a scroll compressor.

7. The full-effect dual-channel refrigeration and humidity control unit as claimed in claim 3, wherein: the balancer, the evaporator, the expansion valve I, the expansion valve II and the inner fan are assembled into a modular indoor unit.

8. The full-effect dual-channel refrigeration and humidity control unit as claimed in claim 4, wherein: the compressor, the gas-liquid separator, the liquid storage tank, the pressure controller, the condenser, the liquid outlet pipe and the outer fan are assembled into a modular outdoor unit.