CN104941707B - A kind of refrigeration system applied to constant temperature humidity chamber - Google Patents
A kind of refrigeration system applied to constant temperature humidity chamber Download PDFInfo
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- CN104941707B CN104941707B CN201510262910.1A CN201510262910A CN104941707B CN 104941707 B CN104941707 B CN 104941707B CN 201510262910 A CN201510262910 A CN 201510262910A CN 104941707 B CN104941707 B CN 104941707B
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Abstract
The invention discloses a kind of refrigeration system applied to constant temperature humidity chamber, it includes heat exchanger and height, cryogenic refrigeration component, high-temperature refrigeration component includes high-temperature refrigeration compressor, first electric expansion valve, cryogenic refrigeration component includes cryogenic refrigeration compressor, cryogenic refrigeration evaporator, second electric expansion valve, high-temperature refrigeration compressor, the outlet of cryogenic refrigeration compressor connects shell and tube condenser by gas pipeline respectively, the outlet of first electric expansion valve and a wherein entrance for heat exchanger connect, heat exchanger outlet corresponding with the first electric expansion valve is connected with the entrance of high-temperature refrigeration compressor, the entrance of second electric expansion valve connects with another outlet of heat exchanger, shell and tube condenser outlet corresponding with cryogenic refrigeration compressor is connected with another entrance of heat exchanger.By said structure design, the present invention has the advantages of modern design, good energy-conserving effect, reliability are good, preparation cost is low and operating efficiency is high.
Description
Technical field
The present invention relates to constant temperature humidity chamber technical field, more particularly to a kind of system applied to constant temperature humidity chamber
Cooling system.
Background technology
Constant temperature humidity chamber is also referred to as constant temperature and moisture test machine, constant temperature and humidity experimental box, constant temperature machine or climatic chamber, its
Mainly for detection of the material equipment of performance and heat-resisting, cold-resistant, the resistance to dry, moisture resistance properties of the various materials of experiment under circumstances；
Wherein, constant temperature humidity chamber be widely used in electronics, electrical equipment, communication, instrument, vehicle, plasthetics, metal, food,
In the detection of the products such as chemistry, building materials, medical treatment, space flight.
For constant temperature humidity chamber, its refrigeration system is typically using mechanical refrigeration and auxiliary liquid nitrogen refrigerating；
Wherein, mechanical refrigeration is freezed using vapor-compression type, i.e., is made up of compressor, condenser, throttle mechanism and evaporator.Need
It is further noted that once test temperature low temperature will reach -55 DEG C, single-stage refrigeration is difficult to meet to require, therefore constant temperature and moisture test
Case typically uses cascade refrigeration structure design.
For the constant temperature humidity chamber refrigeration system used at present, compressor produces 100% using power
Output, it is desirable to which the temperature spot reached is typically necessary with electrically heated mode come equilibrium temperature, so whole constant temperature and humidity
The just obvious increase of the energy consumption of chamber.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the prior art and provide a kind of system applied to constant temperature humidity chamber
Cooling system, this is applied to the refrigerant system design novelty of constant temperature humidity chamber, good energy-conserving effect, reliability is good, prepares
Cost is low and operating efficiency is high.
To reach above-mentioned purpose, the present invention is achieved through the following technical solutions.
A kind of refrigeration system applied to constant temperature humidity chamber, include high-temperature refrigeration component and cryogenic refrigeration group
Part, high-temperature refrigeration component include high-temperature refrigeration compressor, and cryogenic refrigeration component includes cryogenic refrigeration compressor, cryogenic refrigeration
Evaporator, the outlet of high-temperature refrigeration compressor, cryogenic refrigeration compressor are connected with shell and tube condenser by gas pipeline respectively；
The refrigeration system for being applied to constant temperature humidity chamber also includes heat exchanger, corresponding with high-temperature refrigeration compressor
Shell and tube condenser outlet the first electric expansion valve is connected with by liquid-transport pipe-line, the outlet of the first electric expansion valve passes through defeated
A wherein entrance for liquid pipe road and heat exchanger connects, and heat exchanger outlet corresponding with the first electric expansion valve passes through appendix
Road is connected with the entrance of high-temperature refrigeration compressor, and the second electronic expansion is equiped between heat exchanger and cryogenic refrigeration evaporator
Valve, the outlet of the second electric expansion valve are connected by liquid-transport pipe-line with the entrance of cryogenic refrigeration evaporator, the second electric expansion valve
Entrance connected by another outlet of liquid-transport pipe-line and heat exchanger, shell and tube condenser corresponding with cryogenic refrigeration compressor goes out
Mouth is connected by another entrance of liquid-transport pipe-line and heat exchanger, and the outlet of cryogenic refrigeration evaporator passes through gas pipeline and low temperature
The entrance connection of refrigeration compressor.
Wherein, the high-temperature refrigeration compressor outlet and the gas transmission between the entrance of the corresponding shell and tube condenser
Pipeline is equiped with the first oil eliminator, first pressure switch.
Wherein, the cryogenic refrigeration compressor outlet and the gas transmission between the entrance of the corresponding shell and tube condenser
Pipeline be equiped with the second oil eliminator, and pressure switch.
Wherein, the liquid-transport pipe-line for connecting the first electronic expansion valve inlet is equiped with the first device for drying and filtering.
Wherein, the liquid-transport pipe-line for connecting the second electronic expansion valve inlet is equiped with the second device for drying and filtering.
Beneficial effects of the present invention are：A kind of refrigeration system applied to constant temperature humidity chamber of the present invention, its
Including heat exchanger and high and low temperature cooling assembly, high-temperature refrigeration component includes high-temperature refrigeration compressor, and cryogenic refrigeration component includes
Cryogenic refrigeration compressor, cryogenic refrigeration evaporator, the outlet of high-temperature refrigeration compressor, cryogenic refrigeration compressor pass through gas transmission respectively
Pipeline is connected with shell and tube condenser；Shell and tube condenser outlet corresponding with high-temperature refrigeration compressor is connected by liquid-transport pipe-line
There is the first electric expansion valve, the outlet of the first electric expansion valve is connected by a wherein entrance for liquid-transport pipe-line and heat exchanger,
Heat exchanger outlet corresponding with the first electric expansion valve is connected by gas pipeline with the entrance of high-temperature refrigeration compressor, and heat is handed over
The second electric expansion valve is equiped between parallel operation and cryogenic refrigeration evaporator, the outlet of the second electric expansion valve passes through liquid-transport pipe-line
It is connected with the entrance of cryogenic refrigeration evaporator, the entrance of the second electric expansion valve passes through liquid-transport pipe-line and another outlet of heat exchanger
Connection, shell and tube condenser outlet corresponding with cryogenic refrigeration compressor are connected by another entrance of liquid-transport pipe-line and heat exchanger
Connect, the outlet of cryogenic refrigeration evaporator is connected by gas pipeline with the entrance of cryogenic refrigeration compressor.Set by said structure
Meter, the present invention have the advantages of modern design, good energy-conserving effect, reliability are good, preparation cost is low and operating efficiency is high.
Brief description of the drawings
The present invention is further detailed below with accompanying drawing, but the embodiment in accompanying drawing is not formed to this hair
Bright any restrictions.
Fig. 1 is the structural representation of the present invention.
Include in Fig. 1：
1 --- high-temperature refrigeration component 11 --- high-temperature refrigeration compressor
12 --- the first electric expansion valve 13 --- first oil eliminators
14 --- first pressure switch 15 --- first devices for drying and filtering
2 --- cryogenic refrigeration component 21 --- cryogenic refrigeration compressors
22 --- cryogenic refrigeration evaporator 23 --- second electric expansion valves
24 --- the second oil eliminator 25 --- second pressures switch
26 --- the second device for drying and filtering 3 --- shell and tube condensers
4 --- heat exchanger.
Embodiment
With reference to specific embodiment, the present invention will be described.
As shown in figure 1, a kind of refrigeration system applied to constant temperature humidity chamber, include high-temperature refrigeration component 1 and
Cryogenic refrigeration component 2, high-temperature refrigeration component 1 include high-temperature refrigeration compressor 11, and cryogenic refrigeration component 2 includes cryogenic refrigeration
Compressor 21, cryogenic refrigeration evaporator 22, the outlet of high-temperature refrigeration compressor 11, cryogenic refrigeration compressor 21 pass through gas transmission respectively
Pipeline is connected with shell and tube condenser 3.
Further, heat exchanger 4 should also be included applied to the refrigeration system of constant temperature humidity chamber, with high-temperature refrigeration
The outlet of shell and tube condenser 3 is connected with the first electric expansion valve 12 by liquid-transport pipe-line corresponding to compressor 11, and the first electronics is swollen
The outlet of swollen valve 12 is connected by liquid-transport pipe-line with a wherein entrance for heat exchanger 4, corresponding with the first electric expansion valve 12
The outlet of heat exchanger 4 is connected by gas pipeline with the entrance of high-temperature refrigeration compressor 11, and heat exchanger 4 evaporates with cryogenic refrigeration
The second electric expansion valve 23 is equiped between device 22, the outlet of the second electric expansion valve 23 is steamed by liquid-transport pipe-line and cryogenic refrigeration
The entrance connection of device 22 is sent out, the entrance of the second electric expansion valve 23 is connected by another outlet of liquid-transport pipe-line and heat exchanger 4, with
The outlet of shell and tube condenser 3 is connected by liquid-transport pipe-line with another entrance of heat exchanger 4 corresponding to cryogenic refrigeration compressor 21,
The outlet of cryogenic refrigeration evaporator 22 is connected by gas pipeline with the entrance of cryogenic refrigeration compressor 21.
With reference to specific action process, the present invention will be described in detail, is specially：For high-temperature refrigeration group
For part 1, the high-pressure gaseous refrigerant after the acting of high-temperature refrigeration compressor 11 becomes high pressure liquid via shell and tube condenser 3
State refrigerant, high pressure liquid refrigerant becomes low-pressure, liquid refrigerant by the first electric expansion valve 12, by the first electronics
The low-pressure, liquid refrigerant of expansion valve 12 becomes low-pressure gaseous refrigerant through over-heat-exchanger 4 and is finally back to high-temperature refrigeration
In compressor 11；For cryogenic refrigeration component 2, through cryogenic refrigeration compressor 21 acting after high-pressure gaseous refrigerant via
Shell and tube condenser 3 and become high pressure liquid refrigerant, high pressure liquid refrigerant is swollen through over-heat-exchanger 4, the first electronics successively
Swollen valve 12 and become low-pressure, liquid refrigerant, by the second electric expansion valve 23 low-pressure, liquid refrigerant by cryogenic refrigeration steam
Send out device 22 and become low-pressure gaseous refrigerant and be finally back in cryogenic refrigeration compressor 21；Wherein, in high-temperature refrigeration component 1
And the refrigerant of cryogenic refrigeration component 2 respectively by heat exchanger 4 during, the evaporation of the refrigerant of high-temperature refrigeration component 1
Absorb the heat of the refrigerant from cryogenic refrigeration component 2 and vaporize, the evaporation of the refrigerant of cryogenic refrigeration component 2 is then from cold
But to obtain cold, high-temperature refrigeration component 1, cryogenic refrigeration component 2 pass through for object (air in constant temperature humidity chamber) heat absorption
Heat exchanger 4 connects, and heat exchanger 4 is both the evaporator of high-temperature refrigeration component 1, and the condensation of cryogenic refrigeration component 2
Device.
High-temperature refrigeration component 1, the cryogenic refrigeration component 2 of the present invention passes through corresponding first electric expansion valve 12, the respectively
Two electric expansion valves 23 realize process of refrigerastion control, are designed by using electric expansion valve, and the present invention has the following effects that, tool
Body is：'s the portion temperature of high-temperature refrigeration component 1 can the 1st, returned to inside constant temperature humidity chamber, so as to carry out equilibrium temperature point,
Electrically heated power can be so reduced, reaches energy-saving effect；When the 2nd, shutting down each electric expansion valve can be made fully closed, prevent condenser
High-temp liquid inflow evaporator, energy loss when causing to be again started up, and before start, each electric expansion valve standard-sized sheet makes
System high and low pressure side balances, and then starts shooting, had so both realized the light-load starting of compressor, reduces compressor again and open, stop making
Into heat loss, save the electricity charge about 6% or so；3rd, compressor exhaust temperature is controlled using electric expansion valve, can prevent because
The rise of delivery temperature can save ad hoc protector to adverse effect caused by systematic function, cost-effective, carry
High workload efficiency；4th, electric expansion valve can excessively descend even running close to zero and will not produce vibration, so as to give full play to
The heat transfer efficiency of evaporator；5th, electric expansion valve has two-way circulates performance well, the discharge coefficient very littles of 2 flow directions, partially
Difference is less than 4%.
From the above situation, it can be seen that, by said structure design, the present invention has modern design, good energy-conserving effect, stably
Good reliability, prepare the advantages of cost is low and operating efficiency is high.
As preferred embodiment, as shown in figure 1, the outlet of the high-temperature refrigeration compressor 11 and the corresponding shell
Gas pipeline between the entrance of trumpet cooler 3 is equiped with the first oil eliminator 13, first pressure switch 14；Likewise, institute
The outlet and the gas pipeline between the entrance of the corresponding shell and tube condenser 3 for stating cryogenic refrigeration compressor 21 are equiped with the
Two oil eliminators 24, and pressure switch.
As preferred embodiment, as shown in figure 1, the liquid-transport pipe-line dress of the connection entrance of the first electric expansion valve 12
Provided with the first device for drying and filtering 15；Likewise, the liquid-transport pipe-line of the connection entrance of the second electric expansion valve 23 is equiped with second
Device for drying and filtering 26.
Above content is only presently preferred embodiments of the present invention, for one of ordinary skill in the art, according to the present invention's
Thought, there will be changes, this specification content should not be construed as to the present invention in specific embodiments and applications
Limitation.
Claims (3)
- A kind of 1. refrigeration system applied to constant temperature humidity chamber, it is characterised in that：Include high-temperature refrigeration component（1）And Cryogenic refrigeration component（2）, high-temperature refrigeration component（1）Include high-temperature refrigeration compressor（11）, cryogenic refrigeration component（2）Include Cryogenic refrigeration compressor（21）, cryogenic refrigeration evaporator（22）, high-temperature refrigeration compressor（11）, cryogenic refrigeration compressor（21）'s Outlet is connected with shell and tube condenser by gas pipeline respectively（3）；The refrigeration system for being applied to constant temperature humidity chamber also includes heat exchanger（4）, with high-temperature refrigeration compressor（11） Corresponding shell and tube condenser（3）Outlet is connected with the first electric expansion valve by liquid-transport pipe-line（12）, the first electric expansion valve （12）Outlet pass through liquid-transport pipe-line and heat exchanger（4）A wherein entrance connection, with the first electric expansion valve（12）It is corresponding Heat exchanger（4）Outlet passes through gas pipeline and high-temperature refrigeration compressor（11）Entrance connection, heat exchanger（4）With low temperature Refrigerating evaporator（22）Between be equiped with the second electric expansion valve（23）, the second electric expansion valve（23）Outlet pass through woven hose Road and cryogenic refrigeration evaporator（22）Entrance connection, the second electric expansion valve（23）Entrance pass through liquid-transport pipe-line and heat exchange Device（4）Another outlet connection, with cryogenic refrigeration compressor（21）Corresponding shell and tube condenser（3）Outlet by liquid-transport pipe-line with Heat exchanger（4）Another entrance connection, cryogenic refrigeration evaporator（22）Outlet pass through gas pipeline and cryogenic refrigeration and compress Machine（21）Entrance connection；The high-temperature refrigeration compressor（11）Outlet and the corresponding shell and tube condenser（3）Entrance between appendix Road is equiped with the first oil eliminator（13）, first pressure switch（14）；The cryogenic refrigeration compressor（21）Outlet and the corresponding shell and tube condenser（3）Entrance between appendix Road is equiped with the second oil eliminator（24）, second pressure switch（25）.
- A kind of 2. refrigeration system applied to constant temperature humidity chamber according to claim 1, it is characterised in that：Connection institute State the first electric expansion valve（12）The liquid-transport pipe-line of entrance is equiped with the first device for drying and filtering（15）.
- A kind of 3. refrigeration system applied to constant temperature humidity chamber according to claim 2, it is characterised in that：Connection institute State the second electric expansion valve（23）The liquid-transport pipe-line of entrance is equiped with the second device for drying and filtering（26）.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510262910.1A CN104941707B (en) | 2015-05-20 | 2015-05-20 | A kind of refrigeration system applied to constant temperature humidity chamber |
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| CN201510262910.1A CN104941707B (en) | 2015-05-20 | 2015-05-20 | A kind of refrigeration system applied to constant temperature humidity chamber |
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| CN104941707A CN104941707A (en) | 2015-09-30 |
| CN104941707B true CN104941707B (en) | 2017-12-12 |
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| CN106239442A (en) * | 2016-06-30 | 2016-12-21 | 雷复华 | A kind of pathological diagnosis sample process workbench |
| CN110887264A (en) * | 2019-11-22 | 2020-03-17 | 上海交通大学 | Device for controlling heat-humidity alternating environment and heat-humidity alternating test box |
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| CN102794206B (en) * | 2011-05-26 | 2014-09-03 | 上海爱斯佩克环境设备有限公司 | Environmental test equipment with large-capacity refrigeration system and control method for environment test equipment |
| CN202420018U (en) * | 2012-01-13 | 2012-09-05 | 重庆市威尔试验仪器有限公司 | Energy-saving mixed cascade refrigeration system |
| CN103499156B (en) * | 2013-09-24 | 2015-12-09 | 广州赛宝仪器设备有限公司 | The control method of high-low-temperature environmental testing case |
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Address after: 523000 building a, No.15 Shihuan Road, sangyuan community, Dongcheng Street, Dongguan City, Guangdong Province Patentee after: Guangdong Cobo Test Equipment Co., Ltd. Address before: Da Tang Dalingshan Town Lang village 523000 Guangdong city of Dongguan Province Jin Hing Road to science and Technology Park F building second layer B unit Patentee before: Dongguan KeBao Testing Equipment Co., Ltd. |