CN110726187A - Refrigerating device with low-temperature refrigeration and dehumidification functions - Google Patents
Refrigerating device with low-temperature refrigeration and dehumidification functions Download PDFInfo
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- CN110726187A CN110726187A CN201910956403.6A CN201910956403A CN110726187A CN 110726187 A CN110726187 A CN 110726187A CN 201910956403 A CN201910956403 A CN 201910956403A CN 110726187 A CN110726187 A CN 110726187A
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- condenser
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- way valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a refrigerating device with low-temperature refrigeration and dehumidification functions, which comprises a compressor, a condenser provided with a condensing fan, a liquid storage device, a filter, a three-way valve A, an expansion valve, an evaporator provided with an evaporating fan, a three-way valve B and an evaporation refrigeration loop formed by a gas-liquid separator, wherein the condenser, the liquid storage device, the filter, the three-way valve A, the evaporator and the three-way valve B form a low-temperature heat exchange loop; the dehumidification system also comprises a dehumidification condenser, and the condenser, the electromagnetic valve and the dehumidification condenser form a dehumidification loop. The evaporator and the dehumidifying condenser share an evaporating fan; the condensation fan arranged on the condenser discharges the heat load of the condenser to the external space; the evaporator and the evaporator fan arranged in the dehumidifying condenser absorb the heat load in the room to refrigerate or dehumidify the room. The invention realizes the cooling of the internal heat source environment in a wide temperature environment; reliable dehumidification is realized; simple structure, convenient to use, easy maintenance, the reliability is high.
Description
Technical Field
The invention relates to the field of refrigeration systems, in particular to a refrigeration device with low-temperature refrigeration and dehumidification functions.
Background
With the development of science and technology, various closed environment systems with internal heat sources are increasing, the heat dissipation of the closed environment systems is usually performed under the conditions of small temperature difference and large heat flux density, and a temperature and humidity environment capable of meeting the working requirements of internal equipment needs to be provided for the normal operation of the internal equipment.
In order to maintain the indoor ambient temperature stable, a refrigeration and air conditioning system is usually used to ensure the indoor ambient temperature. Under the condition of low temperature, the closed environment with an internal heat source can not completely ensure that the ambient temperature meets the stable work of electronic and electrical equipment only by means of heat dissipation of the wall surface, and a refrigeration system is often required to be started, so that the energy consumption is increased. The electronic and electrical equipment is cooled by adopting an outdoor ventilation mode, dust in the environment can generate unpredictable interference and damage effects on electronic and electrical elements, the safe and reliable operation of the equipment is seriously influenced, outdoor air is required to be dedusted and then introduced into a room, the initial input cost and the later maintenance cost are increased, and therefore, the research of the low-temperature heat exchange technology is carried out at will.
When the climatic condition is humid, the air contains more moisture, and when the evaporation cycle refrigeration is used, the main problems are that when the refrigeration device operates, condensation is easy to occur at the air outlet and in the closed environment; after the refrigerating device is shut down, hot air enters the closed environment system, and the surfaces of the components cooled by the refrigerating device are easy to condense. The performance of electronic equipment such as insulation is affected, and therefore, dehumidification of air is required. The traditional method adopts electric heating to raise the temperature of the closed environment to be above the dew point temperature of the air of the external environment, so that the control is complex, the power consumption is low, and the energy is not saved.
The invention aims to provide a refrigerating device with low-temperature refrigerating and dehumidifying functions, which aims to solve the problems of low-temperature heat exchange and dehumidification of the existing refrigerating device.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
refrigeration device with low temperature refrigeration and dehumidification function, its characterized in that: the condenser with the condensing fan, the liquid storage device, the filter, the three-way valve A, the expansion valve, the evaporator with the evaporating fan, the three-way valve B and the gas-liquid separator, wherein the outlet end of the compressor is connected with the inlet end of the condenser through a pipeline, the outlet end of the condenser is communicated with the inside of the liquid storage device through a pipeline, the inside of the liquid storage device is also connected with the inlet end of the filter through a pipeline, the outlet end of the filter is connected with one valve port of the three-way valve A through a pipeline, the other valve port of the three-way valve A is connected with one valve port of the expansion valve through a pipeline, the other valve port of the expansion valve is connected with the inlet end of the evaporator through a pipeline, the outlet end of the evaporator is connected with one valve port of the three-way valve, thereby forming an evaporative refrigeration circuit;
the third valve port of the three-way valve B is communicated to a pipeline between the compressor and the condenser through a pipeline bypass, and the third valve port of the three-way valve A is communicated to a pipeline between the expansion valve and the evaporator through a pipeline bypass, so that the condenser, the liquid storage device, the filter, the three-way valve A, the evaporator and the three-way valve B form a low-temperature heat exchange loop;
the dehumidifying device also comprises a dehumidifying condenser, wherein the inlet end of the dehumidifying condenser is communicated to a pipeline at the inlet end of the condenser through an electromagnetic valve bypass, and the outlet end of the dehumidifying condenser is communicated to a pipeline between the condenser and a liquid storage device through a pipeline bypass, so that the condenser, the electromagnetic valve and the dehumidifying condenser form a dehumidifying loop.
The refrigerating device with low-temperature refrigeration and dehumidification functions is characterized in that: and a low-pressure protector is communicated and connected to a pipeline between the gas-liquid separator and the compressor.
The refrigerating device with low-temperature refrigeration and dehumidification functions is characterized in that: the evaporator and the dehumidifying condenser share an evaporating fan.
The refrigerating device with low-temperature refrigeration and dehumidification functions is characterized in that: the condenser is equipped with a condensing fan to discharge the heat load of the condenser to the external space, and the evaporator and the dehumidifying condenser are equipped with an evaporating fan to absorb the heat load in the room to refrigerate or dehumidify the room.
The invention has the beneficial effects that:
1) the temperature of the internal heat source environment is reduced in a wide-temperature environment;
2) reliable dehumidification is realized;
3) simple structure, convenient to use, easy maintenance, the reliability is high.
Drawings
FIG. 1 is a system block diagram of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1, the refrigeration device with low-temperature refrigeration and dehumidification functions includes an evaporation refrigeration loop, a low-temperature heat exchange loop, and a dehumidification loop. Wherein:
the evaporation refrigeration loop consists of a compressor 1, a condenser 2 provided with a condensing fan 11, a liquid storage device 3, a filter 4, a three-way valve A5, an expansion valve 6, an evaporator 7 provided with an evaporation fan 12, a three-way valve B8 and a gas-liquid separator 9; the outlet end of the compressor 1 is connected with the inlet end of the condenser 2 through a pipeline, the outlet end of the condenser 2 is communicated with the interior of the liquid storage device 3 through a pipeline, the interior of the liquid storage device 3 is also connected with the inlet end of the filter 4 through a pipeline, the outlet end of the filter 4 is connected with one valve port of the three-way valve A5 through a pipeline, the other valve port of the three-way valve A5 is connected with one valve port of the expansion valve 6 through a pipeline, the other valve port of the expansion valve 6 is connected with the inlet end of the evaporator 7 through a pipeline, the outlet end of the evaporator 7 is connected with one valve port of the three-way valve B8 through a pipeline, the other valve port of the three-way valve B8 is connected with.
The low-temperature heat exchange system comprises a condenser 2, a liquid storage device 3, a filter 4, a three-way valve A5, an expansion valve 6, an evaporator 7 and a three-way valve B8, wherein a third valve port of the three-way valve B8 is communicated to a pipeline between the compressor 1 and the condenser 2 through a pipeline bypass, and a third valve port of the three-way valve A5 is communicated to a pipeline between the expansion valve and the evaporator 7 through a pipeline bypass.
The dehumidification system is additionally provided with an electromagnetic valve 13 and a dehumidification condenser 14 on the evaporation refrigeration system, the inlet end of the dehumidification condenser 14 is communicated to a pipeline at the inlet end of the condenser 2 through a bypass of the electromagnetic valve 13, and the outlet end of the dehumidification condenser 14 is communicated to a pipeline between the condenser 2 and the liquid storage device 3 through a pipeline bypass. During dehumidification, the electromagnetic valve 13 is opened to introduce a part of the high-temperature refrigerant gas into the dehumidification condenser 14, and the air cooled by the evaporator 7 is reheated to reduce the relative humidity of the supplied air; a low-pressure protector is communicated and connected to a pipeline between the evaporator 7 and the compressor 1; the evaporator 7 and the dehumidifying condenser 14 share the evaporation fan 12; a condensing fan 11 disposed in the condenser 2 for discharging the heat load of the condenser 2 to the external space; an evaporation fan 12 provided with the evaporator 7 and the dehumidifying condenser 14 sucks a heat load in the room to cool or dehumidify the room.
The working process of the refrigeration system is as follows: compressor 1 → condenser 2 → accumulator 3 → filter 4 → three-way valve a5 → expansion valve 6 → evaporator 7 → three-way valve B8 → gas-liquid separator 9 → compressor 1. The high temperature refrigerant exchanges heat with the air circulating in the condenser 2 through the condenser 2, and is then discharged to the surrounding atmosphere through the condensing fan 11 to cool the refrigerant, and the low temperature refrigerant exchanges heat with the air circulating in the evaporator 7 through the evaporator 7, and then absorbs the heat in the surrounding air through the evaporating fan 12 to warm the refrigerant.
In the invention, the working modes are as follows:
1) when low-temperature heat exchange refrigeration is carried out, the three-way valve A and the three-way valve B are switched, so that the outlet of the evaporator 7 is connected with the inlet of the condenser 2, the outlet 2 of the condenser is connected with the inlet of the evaporator 7, the compressor 1 and the expansion valve 6 are bypassed and do not work, and the condensing fan 11 and the evaporating fan 12 work; the liquid refrigerant in the evaporator 7 absorbs the heat of the closed environment air and is evaporated into gaseous refrigerant, and generates certain pressure to enable the gaseous refrigerant to be sent into the condenser 2, the gaseous refrigerant is cooled into liquid refrigerant by the outdoor cooling air in the condenser 2, and the liquid refrigerant flows back into the evaporator 7 through the action of gravity, so that a heat pipe cycle is formed. The air inside and outside the cabin is not mixed in the heat exchange process.
2) In the dehumidification, in addition to completing the operation flow of the refrigeration system, the solenoid valve 13 is opened to introduce a part of the high-temperature refrigerant gas into the dehumidification condenser 14, and reheat the air cooled by the evaporator 7 to reduce the relative humidity of the supply air.
The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.
Claims (4)
1. Refrigeration device with low temperature refrigeration and dehumidification function, its characterized in that: the condenser with the condensing fan, the liquid storage device, the filter, the three-way valve A, the expansion valve, the evaporator with the evaporating fan, the three-way valve B and the gas-liquid separator, wherein the outlet end of the compressor is connected with the inlet end of the condenser through a pipeline, the outlet end of the condenser is communicated with the inside of the liquid storage device through a pipeline, the inside of the liquid storage device is also connected with the inlet end of the filter through a pipeline, the outlet end of the filter is connected with one valve port of the three-way valve A through a pipeline, the other valve port of the three-way valve A is connected with one valve port of the expansion valve through a pipeline, the other valve port of the expansion valve is connected with the inlet end of the evaporator through a pipeline, the outlet end of the evaporator is connected with one valve port of the three-way valve, thereby forming an evaporative refrigeration circuit;
the third valve port of the three-way valve B is communicated to a pipeline between the compressor and the condenser through a pipeline bypass, and the third valve port of the three-way valve A is communicated to a pipeline between the expansion valve and the evaporator through a pipeline bypass, so that the condenser, the liquid storage device, the filter, the three-way valve A, the evaporator and the three-way valve B form a low-temperature heat exchange loop;
the dehumidifying device also comprises a dehumidifying condenser, wherein the inlet end of the dehumidifying condenser is communicated to a pipeline at the inlet end of the condenser through an electromagnetic valve bypass, and the outlet end of the dehumidifying condenser is communicated to a pipeline between the condenser and a liquid storage device through a pipeline bypass, so that the condenser, the electromagnetic valve and the dehumidifying condenser form a dehumidifying loop.
2. A refrigerating apparatus with low-temperature refrigerating and dehumidifying functions as claimed in claim 1, wherein: and a low-pressure protector is communicated and connected to a pipeline between the gas-liquid separator and the compressor.
3. A refrigerating apparatus with low-temperature refrigerating and dehumidifying functions as claimed in claim 1, wherein: the evaporator and the dehumidifying condenser share an evaporating fan.
4. A refrigerating apparatus with low-temperature refrigerating and dehumidifying functions as claimed in claim 3, wherein: the condenser is equipped with a condensing fan to discharge the heat load of the condenser to the external space, and the evaporator and the dehumidifying condenser are equipped with an evaporating fan to absorb the heat load in the room to refrigerate or dehumidify the room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910956403.6A CN110726187A (en) | 2019-10-10 | 2019-10-10 | Refrigerating device with low-temperature refrigeration and dehumidification functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910956403.6A CN110726187A (en) | 2019-10-10 | 2019-10-10 | Refrigerating device with low-temperature refrigeration and dehumidification functions |
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| Publication Number | Publication Date |
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| CN110726187A true CN110726187A (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910956403.6A Pending CN110726187A (en) | 2019-10-10 | 2019-10-10 | Refrigerating device with low-temperature refrigeration and dehumidification functions |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486534A (en) * | 2020-05-19 | 2020-08-04 | 福州融翔电气技术有限公司 | Low-power-consumption constant-temperature constant-humidity machine and working method thereof |
| CN113353267A (en) * | 2021-07-20 | 2021-09-07 | 南京航空航天大学 | Helicopter cabin air conditioning system |
-
2019
- 2019-10-10 CN CN201910956403.6A patent/CN110726187A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486534A (en) * | 2020-05-19 | 2020-08-04 | 福州融翔电气技术有限公司 | Low-power-consumption constant-temperature constant-humidity machine and working method thereof |
| CN113353267A (en) * | 2021-07-20 | 2021-09-07 | 南京航空航天大学 | Helicopter cabin air conditioning system |
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