CN104132474B - Environment conditioning device for low-temperature laboratory - Google Patents
Environment conditioning device for low-temperature laboratory Download PDFInfo
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- CN104132474B CN104132474B CN201410334672.6A CN201410334672A CN104132474B CN 104132474 B CN104132474 B CN 104132474B CN 201410334672 A CN201410334672 A CN 201410334672A CN 104132474 B CN104132474 B CN 104132474B
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- evaporator
- compressor
- vaporizer
- low temperature
- temperature test
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Air Conditioning Control Device (AREA)
- Defrosting Systems (AREA)
Abstract
The invention provides an environment conditioning device for a low-temperature laboratory. The environment conditioning device for the low-temperature laboratory comprises a compressor, a condenser, a first throttling assembly, an evaporator and a first control switch, wherein the two ends of the first control switch are connected with an exhaust port of the compressor and an outlet of the first throttling assembly respectively, the evaporator is divided into two or more evaporator units, and an evaporator throttling assembly is arranged between every two adjacent evaporator units. When the environment conditioning device operates in the defrosting mode, a refrigerant directly enters the evaporator units through the first control switch after being discharged from the compressor, the evaporator unit at the forefront end plays a role as a condenser, ice and frost which are located on the evaporator unit at the forefront end are molten through the high-temperature and high-pressure refrigerant discharged by the compressor, and the refrigerant enters the evaporator units on the rear portion after throttling and pressure reduction are conducted on the refrigerant through the evaporator throttling assemblies and then flows back to the compressor. According to the environment conditioning device for the low-temperature laboratory, a small amount of ice and frost on the evaporator units on the rear portion are molten through heat emitted by the evaporator unit at the forefront end, in this way, the defrosting efficiency is high, energy is saved, and a control method is simple.
Description
Technical field
The present invention relates to the environment adjusting device technical field of laboratory, more particularly to a kind of environment of low temperature test room
Adjusting means.
Background technology
At present, as Fig. 1, the environment regulating device of low temperature test room includes: compressor 10, condenser 20, orifice union
30 and vaporizer 40, the Defrost mode of low temperature test room typically adopts electric defrosting mode or water defrosting mode:
1st, electric defrosting mode: lift laboratory temperature using electrical heating, the melts that will produce.
Advantage: using the existing electric heating equipment of laboratory, control simple；
Shortcoming: need to expend a large amount of electric energy, defrosting efficiency is not high, cause laboratory temperature that huge fluctuation occurs.
2nd, water defrosting mode: side makes high-pressure water pipe on an evaporator, and pressure and temperature using water wash away ice
Advantage: control simple, during defrosting, laboratory temperature fluctuation is not too large；
Shortcoming: cause a large amount of waste water, defrosting terminates vaporizer and overworks the globule, and equipment starts the easy frosting of finisher, plus
The fast defrosting frequency of laboratory.
Therefore, the Defrost mode of the environment regulating device of current low temperature test room is still undesirable, needs to make improvements.
Content of the invention
The technical problem to be solved is to provide a kind of environment regulating device of low temperature test room, it is possible to increase
The efficiency of low temperature test room defrosting, reduces the energy loss during defrosting of low temperature test room, reduces laboratory temperature big model during defrosting
The fluctuation enclosed, improves the dehumidifying effect of laboratory.
The present invention is achieved through the following technical solutions:
The environment regulating device of low temperature test room, includes: compressor, condenser, first throttle assembly and vaporizer, institute
State compressor, condenser, first throttle assembly and vaporizer and cooling cycle system is in turn connected to form by pipeline, coolant is located at
Flow in described cooling cycle system；Wherein, the environment regulating device of described low temperature test room also includes the first controlling switch,
The two ends of described first controlling switch connect the air vent of compressor and the flow export of first throttle assembly by pipeline respectively；Institute
State vaporizer and be separated into evaporator unit more than two, between adjacent vaporizers unit, be additionally provided with vaporizer restriction
Part.
Wherein in an embodiment, described vaporizer throttle part includes the second orifice union and controls the second throttling
Second controlling switch of coolant break-make in assembly.
Further, described second orifice union and the second controlling switch controlling coolant break-make in the second orifice union are led to
The mode crossing parallel connection is connected between adjacent vaporizers unit.
Further, described first controlling switch is the first electromagnetic valve.
Further, described second controlling switch is the second electromagnetic valve.
Further, described vaporizer is separated into two groups of evaporator unit, that is, include the first evaporator unit and
Two evaporator units, the second orifice union and the second electromagnetic valve are by pipeline using being connected to the first vaporizer list by way of in parallel
Between unit and the second evaporator unit.
Further, described condenser is shell-and-tube cooler.
Further, described vaporizer is wind-cooled evaporator.
Beneficial effects of the present invention are as follows:
The environment regulating device of the low temperature test room of the present invention, includes: compressor, condenser, first throttle assembly, steaming
Send out device and the first controlling switch, the two ends of described first controlling switch connect the air vent and first of compressor respectively by pipeline
The flow export of orifice union；Vaporizer is separated into evaporator unit more than two, also sets up between adjacent vaporizers unit
There is vaporizer throttle part.When the environment regulating device of low temperature test room is in defrosting mode and runs, coolant is arranged from compressor
After going out, evaporator unit is directly entered by the first controlling switch, now evaporator unit foremost plays the work of condenser
With the melts on evaporator unit foremost, coolant are throttled by the High Temperature High Pressure coolant that compressor is discharged through vaporizer
Enter the evaporator unit at rear portion after part throttle decompression, return to compressor, complete a defrosting circulation.And the vaporizer at rear portion
The heat that a small amount of frost absorption on unit evaporator unit foremost comes out melts under laboratory fan action.
The environment regulating device of the low temperature test room of the present invention, has a characteristic that
1st, improve the efficiency of low temperature test room defrosting.
2nd, reduce the energy loss during defrosting of low temperature test room.
Reduce laboratory temperature when the 3rd, defrosting to fluctuate on a large scale.
4th, improve laboratory dehumidifying effect
, for the environment regulating device of existing low temperature test room, defrosting efficiency is high, and energy-conservation for the present invention, its control
Method processed is also simple.
Brief description
Fig. 1 is the environment regulating device system structure diagram of the low temperature test room of prior art；
When Fig. 2 freezes for the environment regulating device of low temperature test room of the present invention, coolant flows to schematic diagram；
When Fig. 3 heats for the environment regulating device of low temperature test room of the present invention, coolant flows to schematic diagram
Description of reference numerals:
1st, compressor, 2, shell-and-tube cooler, 3, first throttle assembly, 4, wind-cooled evaporator, the 5, first electromagnetic valve, 401,
First evaporator unit, the 402, second evaporator unit, the 403, second orifice union, the 404, second electromagnetic valve.
Specific embodiment
The present invention in order to solve problem of the prior art it is proposed that a kind of environment regulating device of low temperature test room, including
Have: compressor, condenser, first throttle assembly and vaporizer, described compressor, condenser, first throttle assembly and vaporizer
Cooling cycle system is in turn connected to form by pipeline, coolant is located in described cooling cycle system and flows；Wherein, described low temperature
The environment regulating device of laboratory also includes the first controlling switch, and the two ends of described first controlling switch are respectively by pipeline even
Connect the air vent of compressor and the flow export of first throttle assembly；Described vaporizer is separated into vaporizer list more than two
Unit, is additionally provided with vaporizer throttle part between adjacent vaporizers unit.
Wherein in an embodiment, described vaporizer throttle part includes the second orifice union and controls the second throttling
Second controlling switch of coolant break-make in assembly.
Further, described second orifice union and the second controlling switch controlling coolant break-make in the second orifice union are led to
The mode crossing parallel connection is connected between adjacent vaporizers unit.
Further, described first controlling switch is the first electromagnetic valve.
Further, described second controlling switch is the second electromagnetic valve.
Further, described vaporizer is separated into two groups of evaporator unit, that is, include the first evaporator unit and
Two evaporator units, the second orifice union and the second electromagnetic valve are by pipeline using being connected to the first vaporizer list by way of in parallel
Between unit and the second evaporator unit.
Further, described condenser is shell-and-tube cooler.
Further, described vaporizer is wind-cooled evaporator.
Embodiment:
As shown in Figure 2,3, the environment regulating device of the low temperature test room of the present embodiment, includes compressor 1, shell-and-tube cold
Condenser 2, first throttle assembly 3 and wind-cooled evaporator 4, for realizing not only the efficient but also defrosting of energy-conservation, increased as bottom to system
Part: the 1. connecting tube between compressor exhaust pipe to vaporizer and the first electromagnetic valve 5；2. original wind-cooled evaporator 4 is cut
Become two parts: the first evaporator unit 401 and the second evaporator unit 402, between with the second in parallel electromagnetic valve 404 and second
Orifice union 403 couples together.
The environment regulating device of the low temperature test room of the present embodiment, during work:
Run when the 1st, freezing: such as Fig. 2, the first electromagnetic valve 5 cuts out, and the second electromagnetic valve 404 is opened.Coolant is from compressor 1 row
Through shell-and-tube cooler 2 after going out, after reducing pressure by regulating flow, enter the first evaporator unit 401, because the second electromagnetic valve 404 is opened, the
Two orifice unions 403 are inoperative, and coolant enters the second evaporator unit 402 from the second electromagnetic valve 404, has returned to compressor 1,
As original refrigeration system.
Run when the 2nd, defrosting: such as Fig. 3, the first electromagnetic valve 5 is opened, and the second electromagnetic valve 404 cuts out, and coolant is from compressor 1 row
After going out, the first evaporator unit 401 is directly entered by the first electromagnetic valve 5, now the first evaporator unit 401 is as condenser
Purposes, the High Temperature High Pressure coolant that compressor is discharged is by the melts on the first evaporator unit 401, the second electromagnetic valve 404
Close, coolant enters the second evaporator unit 402 after the second orifice union 403 expenditure and pressure, returns to compressor, completes one
Defrosting circulation.And the heat that a small amount of frost on the second evaporator unit 402 is come out due to the first evaporator unit 401
Melt under laboratory fan action.
3rd, become an air-cooled constant temp dehumidifier after whole system transformation, the environment so with this low temperature test room is adjusted
The effect on moisture extraction of the laboratory table of device significantly improves.
The present embodiment, for the environment regulating device of existing low temperature test room, increased two electromagnetic valves and one
Individual orifice union, original vaporizer is divided into two parts, using the flow direction changing coolant, the vaporizer of frosting is melted.No
But improve the defrosting efficiency of laboratory, energy saving, and reduce and bring the huge fluctuation of laboratory temperature because of defrosting.
Embodiment described above only have expressed embodiments of the present invention, and its description is more concrete and detailed, but can not
Therefore it is interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the protection model of the present invention
Enclose.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (5)
1. the environment regulating device of low temperature test room, includes: compressor, condenser, first throttle assembly and vaporizer, described
Compressor, condenser, first throttle assembly and vaporizer are in turn connected to form cooling cycle system by pipeline, and coolant is located at institute
State flowing in cooling cycle system；It is characterized in that, the environment regulating device of described low temperature test room also includes the first control
Switch, the two ends of described first controlling switch connect the air vent of compressor and the outflow of first throttle assembly by pipeline respectively
Mouthful；Described vaporizer is separated into evaporator unit more than two, is additionally provided with vaporizer section between adjacent vaporizers unit
Stream unit；Described condenser is shell-and-tube cooler；Described vaporizer is wind-cooled evaporator；Described vaporizer throttle part includes
The second controlling switch having the second orifice union and controlling coolant break-make in the second orifice union.
2. the environment regulating device of low temperature test room according to claim 1 is it is characterised in that described second orifice union
It is connected to adjacent vaporizers unit with controlling the second controlling switch of coolant break-make in the second orifice union mode in parallel
Between.
3. the environment regulating device of low temperature test room according to claim 1 and 2 is it is characterised in that described first controls
Switch as the first electromagnetic valve.
4. the environment regulating device of low temperature test room according to claim 3 is it is characterised in that described second controlling switch
For the second electromagnetic valve.
5. the environment regulating device of low temperature test room according to claim 4 is it is characterised in that described vaporizer is separated into
For two groups of evaporator unit, that is, include the first evaporator unit and the second evaporator unit, the second orifice union and the second electricity
Magnet valve is by pipeline using being connected between the first evaporator unit and the second evaporator unit by way of in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410334672.6A CN104132474B (en) | 2014-07-14 | 2014-07-14 | Environment conditioning device for low-temperature laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410334672.6A CN104132474B (en) | 2014-07-14 | 2014-07-14 | Environment conditioning device for low-temperature laboratory |
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| Publication Number | Publication Date |
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| CN104132474A CN104132474A (en) | 2014-11-05 |
| CN104132474B true CN104132474B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410334672.6A Expired - Fee Related CN104132474B (en) | 2014-07-14 | 2014-07-14 | Environment conditioning device for low-temperature laboratory |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501478B (en) * | 2014-12-29 | 2016-09-28 | 苏州苏试试验仪器股份有限公司 | A kind of environmental test chamber vaporizer |
| CN105371395A (en) * | 2015-12-05 | 2016-03-02 | 泰豪科技股份有限公司 | Defrosting quantity adjustable low-temperature dehumidifier |
| CN105402937B (en) * | 2015-12-22 | 2019-01-15 | 广东志高暖通设备股份有限公司 | A kind of air-conditioning system |
| CN109631442A (en) * | 2018-12-20 | 2019-04-16 | 广州美的华凌冰箱有限公司 | Refrigerating plant, the control method of refrigerating plant, system and storage medium |
| CN111520968B (en) * | 2020-05-11 | 2021-03-16 | 珠海格力电器股份有限公司 | Non-stop defrosting control method and refrigeration equipment |
Citations (6)
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| JPH10267504A (en) * | 1997-03-25 | 1998-10-09 | Toshiba Corp | Refrigerator |
| WO2003057518A1 (en) * | 2002-01-14 | 2003-07-17 | Behr Gmbh & Co. | Heating/cooling circuit for an air-conditioning system of a motor vehicle, air-conditioning system and a method for controlling the same |
| JP2003207237A (en) * | 2002-12-25 | 2003-07-25 | Matsushita Electric Ind Co Ltd | Refrigerator |
| CN201335568Y (en) * | 2008-12-27 | 2009-10-28 | 广东美的电器股份有限公司 | Defrosting system for outdoor unit of air conditioner |
| EP2299205A1 (en) * | 2009-09-22 | 2011-03-23 | Valeo Systèmes Thermiques | Air conditioning device for a heating installation, a ventilation installation and/or a air conditioning installation |
| CN204100635U (en) * | 2014-07-14 | 2015-01-14 | 珠海格力电器股份有限公司 | The environment regulating device of low temperature test room |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01169283A (en) * | 1987-12-25 | 1989-07-04 | Chubu Electric Power Co Inc | Refrigerating cycle |
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2014
- 2014-07-14 CN CN201410334672.6A patent/CN104132474B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10267504A (en) * | 1997-03-25 | 1998-10-09 | Toshiba Corp | Refrigerator |
| WO2003057518A1 (en) * | 2002-01-14 | 2003-07-17 | Behr Gmbh & Co. | Heating/cooling circuit for an air-conditioning system of a motor vehicle, air-conditioning system and a method for controlling the same |
| JP2003207237A (en) * | 2002-12-25 | 2003-07-25 | Matsushita Electric Ind Co Ltd | Refrigerator |
| CN201335568Y (en) * | 2008-12-27 | 2009-10-28 | 广东美的电器股份有限公司 | Defrosting system for outdoor unit of air conditioner |
| EP2299205A1 (en) * | 2009-09-22 | 2011-03-23 | Valeo Systèmes Thermiques | Air conditioning device for a heating installation, a ventilation installation and/or a air conditioning installation |
| CN204100635U (en) * | 2014-07-14 | 2015-01-14 | 珠海格力电器股份有限公司 | The environment regulating device of low temperature test room |
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| CN104132474A (en) | 2014-11-05 |
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