CN204165263U - A kind of air-treatment unit and high/low temperature switched system thereof - Google Patents
A kind of air-treatment unit and high/low temperature switched system thereof Download PDFInfo
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- CN204165263U CN204165263U CN201420606048.2U CN201420606048U CN204165263U CN 204165263 U CN204165263 U CN 204165263U CN 201420606048 U CN201420606048 U CN 201420606048U CN 204165263 U CN204165263 U CN 204165263U
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- low temperature
- heating power
- expansion valve
- temperature
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Abstract
This application discloses a kind of high/low temperature switched system of air-treatment unit, comprising: compressor; The condenser be connected with described compressor outlet; High temperature heating power expansion valve that be connected with the outlet of described condenser and parallel with one another and low temperature heating power expansion valve; The evaporimeter be all connected with described high temperature heating power expansion valve and described low temperature heating power expansion valve, the outlet of described evaporimeter is connected with the import of described compressor.High/low temperature switched system in the utility model only needs the break-make controlling high temperature heating power expansion valve and low temperature heating power expansion valve can realize the switching of high/low temperature test environment, do not need to arrange two systems, therefore, reduce testing cost, do not take larger lab space, convenient test.The invention also discloses a kind of air-treatment unit comprising this high/low temperature switched system.
Description
Technical field
The utility model relates to environment temperature control technology field, particularly a kind of high/low temperature switched system of air-treatment unit.Also relate to a kind of air-treatment unit comprising this high/low temperature switched system.
Background technology
In air-conditioning R&D process, need the actual application environment condition simulating air-conditioning, to test air-conditioning sample.Common implementation is, in a relatively airtight space (in laboratory's environment), regulates the environment temperature in space by air-treatment unit, is placed by air-conditioning sample to run in this context and tests.
The test of air-conditioning sample needs to test in hot environment (7 DEG C ~ 45 DEG C) and low temperature environment (-5 DEG C ~ 7 DEG C) respectively usually, and at present for laboratory provides the system of environment temperature can only provide a kind of temperature environment, i.e. hot environment or low temperature environment, if the test of two kinds of temperature environments will be carried out respectively, need to provide two cover systems, i.e. high-temperature systems and cryogenic system, existing high-temperature systems and cryogenic system cannot complete the adjustment of two kinds of environment temperatures.Adopt two cover systems will certainly improve the cost of laboratory, take larger laboratory space, complex operation.
In sum, under the condition providing high/low temperature test environment for air conditioner test, reduce testing cost, simplify test operation, become those skilled in the art's problem demanding prompt solution.
Utility model content
In view of this, the purpose of this utility model is the high/low temperature switched system providing a kind of air-treatment unit, under providing the condition of high/low temperature test environment for air-conditioning sample test, reduces testing cost, simplifies test operation.
Another object of the present utility model is to provide a kind of air-treatment unit comprising this high/low temperature switched system.
For achieving the above object, the utility model provides following technical scheme:
A high/low temperature switched system for air-treatment unit, comprising:
Compressor;
The condenser be connected with described compressor outlet;
High temperature heating power expansion valve that be connected with the outlet of described condenser and parallel with one another and low temperature heating power expansion valve;
The evaporimeter be all connected with described high temperature heating power expansion valve and described low temperature heating power expansion valve, the outlet of described evaporimeter is connected with the import of described compressor.
Preferably, in above-mentioned high/low temperature switched system, also comprise:
High-temperature solenoid valve, the two ends of described high-temperature solenoid valve connect the outlet of described high temperature heating power expansion valve and described condenser respectively;
Low-temperature solenoid valve, the two ends of described low-temperature solenoid valve connect the outlet of low temperature heating power expansion valve and described condenser respectively.
Preferably, in above-mentioned high/low temperature switched system, the peripheral passage of the high temperature test environment that described air-treatment unit provides is successively through compressor outlet, condenser, high-temperature solenoid valve, high temperature heating power expansion valve, evaporimeter and compressor inlet.
Preferably, in above-mentioned high/low temperature switched system, the peripheral passage of the low-temperature test environment that described air-treatment unit provides is successively through compressor outlet, condenser, low-temperature solenoid valve, low temperature heating power expansion valve, evaporimeter and compressor inlet.
Preferably, in above-mentioned high/low temperature switched system, described condenser is shell and tube exchanger.
Preferably, in above-mentioned high/low temperature switched system, described evaporimeter is finned heat exchanger.
The utility model additionally provides a kind of air-treatment unit, comprises the high/low temperature switched system described in above any one.
Compared with prior art, the beneficial effects of the utility model are:
In the high/low temperature switched system of the air-treatment unit that the utility model provides, by the opening and closing of the high temperature heating power expansion valve that is arranged in parallel and low temperature heating power expansion valve, realize the switching of high/low temperature test environment, because high temperature heating power expansion valve is different with self open range of low temperature heating power expansion valve, therefore, by the current through line of refrigerant in change system, determine refrigerant flow in systems in which, flow is less, the system temperature that then can reach is lower, flow is larger, the system temperature that can reach is higher, so, when refrigerant passes through from the closed circuit at high temperature heating power expansion valve place, system can provide the test environment of high temperature, when refrigerant passes through from the closed circuit at low temperature heating power expansion valve place, system can provide the test environment of low temperature, visible, high/low temperature switched system in the utility model only needs the break-make controlling high temperature heating power expansion valve and low temperature heating power expansion valve can realize the switching of high/low temperature test environment, do not need to arrange two systems, therefore, reduce testing cost, do not take larger lab space, convenient test.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The principle schematic of the high/low temperature switched system of a kind of air-treatment unit that Fig. 1 provides for the utility model embodiment.
In FIG, 1 be compressor, 2 be condenser, 3 be high-temperature solenoid valve, 4 be high temperature heating power expansion valve, 5 be evaporimeter, 6 be low-temperature solenoid valve, 8 for low temperature heating power expansion valve.
Detailed description of the invention
Core of the present utility model there is provided a kind of high/low temperature switched system of air-treatment unit, under providing the condition of high/low temperature test environment for air-conditioning sample test, reduces testing cost, simplifies test operation.
The utility model additionally provides a kind of air-treatment unit comprising this high/low temperature switched system.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, the principle schematic of the high/low temperature switched system of a kind of air-treatment unit that Fig. 1 provides for the utility model embodiment.
As shown in Figure 1, the utility model embodiment provides a kind of high/low temperature switched system of air-treatment unit, hereinafter referred to as high/low temperature switched system, comprises compressor 1, condenser 2, high temperature heating power expansion valve 4, low temperature heating power expansion valve 8 and evaporimeter 5.Wherein, the outlet of compressor 1 is connected with the import of condenser 2, high temperature heating power expansion valve 4 is connected with the outlet of condenser 2 parallel with one another with low temperature heating power expansion valve 8, and high temperature heating power expansion valve 4 is all connected with evaporimeter 5 with low temperature heating power expansion valve 8, the outlet of evaporimeter 5 is connected with the import of compressor 1.
The operation principle of above-mentioned high/low temperature switched system with the course of work is: high temperature heating power expansion valve 4 is different with the open range of low temperature heating power expansion valve 8, the open range of usual high temperature heating power expansion valve 4 represents by temperature controlling range, its temperature controlling range 10 DEG C ~ 20 DEG C, the aperture controlled is large, temperature controlling range-20 DEG C ~ 20 DEG C of low temperature heating power expansion valve 8, the aperture controlled is little, and the minimum aperture of low temperature heating power expansion valve 6 is the half of the minimum aperture of high temperature expansion valve 4; The aperture of heating power expansion valve directly affects the flow of the refrigerant of high/low temperature switched system, and the temperature that the discharge relation of refrigerant provides to system, cold medium flux is large, then can provide high temperature, cold medium flux is little, then can provide low temperature.Therefore, when refrigerant passes through from the closed circuit at high temperature heating power expansion valve 4 place, system can provide the test environment of high temperature, and when refrigerant passes through from the closed circuit at low temperature heating power expansion valve 8 place, system can provide the test environment of low temperature.
As seen from the above, high/low temperature switched system in the utility model only needs the break-make controlling high temperature heating power expansion valve 4 and low temperature heating power expansion valve 8 can realize the switching of high/low temperature test environment, do not need to arrange two cover systems, therefore, reduce testing cost, do not take larger lab space, convenient test.
Further optimization, in the present embodiment, high/low temperature switched system also comprises high-temperature solenoid valve 3 and low-temperature solenoid valve 6, and wherein, the two ends of high-temperature solenoid valve 3 connect the outlet of high temperature heating power expansion valve 4 and condenser 2 respectively; The two ends of low-temperature solenoid valve 6 connect the outlet of low temperature heating power expansion valve 8 and condenser 2 respectively.In order to the low temperature of the high temperature and low-temperature circuit that adapt to high-temperature circuit, therefore high-temperature solenoid valve 3 is set in high-temperature circuit, can be high temperature resistant, and high-temperature circuit is carried out to the control of break-make, protection high temperature heating power expansion valve 4; Low-temperature solenoid valve 6 is set in low-temperature circuit, can be low temperature resistant, low-temperature circuit is carried out to the control of break-make, protection low temperature heating power expansion valve 8.
In above-mentioned high/low temperature switched system, the peripheral passage of the high temperature test environment that air-treatment unit provides is successively through compressor 1, low temperature low pressure gas compression is become high temperature high pressure liquid by compressor 1, from compressor 1 high-temperature high-pressure liquid direction of flow condenser 2 out, in condenser 2, heat release becomes cryogenic high pressure liquid, high temperature heating power expansion valve 4 is entered afterwards through high-temperature solenoid valve 3, now, low-temperature solenoid valve 6 is closed, cryogenic high pressure liquid reducing pressure by regulating flow becomes low-temp low-pressure gas-liquid mixture, enter in evaporimeter 5 again, gas-liquid mixture gasifies and absorbs external heat in evaporimeter 5, play cooling effect, the circulation that compressor 1 carries out next time is flowed back to from evaporimeter 5 low temperature low pressure gas out.Controlled by the aperture of high temperature heating power expansion valve 4, complete as laboratory provides the task of high temperature test environment.
The peripheral passage of the low-temperature test environment that air-treatment unit provides is successively through compressor 1, low temperature low pressure gas compression is become high temperature high pressure liquid by compressor 1, from compressor 1 high-temperature high-pressure liquid direction of flow condenser 2 out, in condenser 2, heat release becomes cryogenic high pressure liquid, low temperature heating power expansion valve 8 is entered afterwards through low-temperature solenoid valve 6, now high-temperature solenoid valve 3 is closed, cryogenic high pressure liquid reducing pressure by regulating flow becomes low-temp low-pressure gas-liquid mixture, enter in evaporimeter 5 again, gas-liquid mixture gasifies and absorbs external heat in evaporimeter 5, play cooling effect, the circulation that compressor 1 carries out next time is flowed back to from evaporimeter 5 low temperature low pressure gas out.Controlled by the aperture of low temperature heating power expansion valve 8, complete as laboratory provides the task of low-temperature test environment.
When carrying out the switching of high/low temperature test environment, by the temperature of artificial judgment system, when system temperature reaches in the scope between 6 DEG C ~ 8 DEG C, be preferably 7 DEG C, i.e. high/low temperature switching temperature critical point 7 DEG C, when temperature in system has exceeded 7 DEG C, Artificial Control high-temperature solenoid valve 3 has been connected, and low-temperature solenoid valve 6 is closed; During lower than 7 DEG C, otherwise then.
In the present embodiment, condenser 2 is preferably shell and tube exchanger, and evaporimeter 5 is finned heat exchanger.Certainly, condenser 2 and evaporimeter 5 can also adopt the heat exchanger of other type, are not specifically limited at this.
The utility model embodiment still provides a kind of air-treatment unit, comprises the high/low temperature switched system described by above whole embodiment.The air-treatment unit that have employed this high/low temperature switched system has technique effect described above, reduces air processing machine composition originally, reduces space hold.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a high/low temperature switched system for air-treatment unit, is characterized in that, comprising:
Compressor (1);
The condenser (2) be connected is exported with described compressor (1);
High temperature heating power expansion valve (4) that be connected with the outlet of described condenser (2) and parallel with one another and low temperature heating power expansion valve (8);
The evaporimeter (5) be all connected with described high temperature heating power expansion valve (4) and described low temperature heating power expansion valve (8), the outlet of described evaporimeter (5) is connected with the import of described compressor (1).
2. high/low temperature switched system according to claim 1, is characterized in that, also comprise:
High-temperature solenoid valve (3), the two ends of described high-temperature solenoid valve (3) connect the outlet of described high temperature heating power expansion valve (4) and described condenser (2) respectively;
Low-temperature solenoid valve 6), the two ends of described low-temperature solenoid valve (6) connect the outlet of low temperature heating power expansion valve (8) and described condenser (2) respectively.
3. high/low temperature switched system according to claim 2, it is characterized in that, the peripheral passage of the high temperature test environment that described air-treatment unit provides is successively through compressor (1) outlet, condenser (2), high-temperature solenoid valve (3), high temperature heating power expansion valve (4), evaporimeter (5) and compressor (1) import.
4. high/low temperature switched system according to claim 2, it is characterized in that, the peripheral passage of the low-temperature test environment that described air-treatment unit provides is successively through compressor (1) outlet, condenser (2), low-temperature solenoid valve (6), low temperature heating power expansion valve (8), evaporimeter (5) and compressor (1) import.
5. high/low temperature switched system according to claim 1, is characterized in that, described condenser (2) is shell and tube exchanger.
6. high/low temperature switched system according to claim 1, is characterized in that, described evaporimeter (5) is finned heat exchanger.
7. an air-treatment unit, is characterized in that, comprises the high/low temperature switched system as described in any one of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420606048.2U CN204165263U (en) | 2014-10-20 | 2014-10-20 | A kind of air-treatment unit and high/low temperature switched system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420606048.2U CN204165263U (en) | 2014-10-20 | 2014-10-20 | A kind of air-treatment unit and high/low temperature switched system thereof |
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| CN204165263U true CN204165263U (en) | 2015-02-18 |
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| CN201420606048.2U Expired - Fee Related CN204165263U (en) | 2014-10-20 | 2014-10-20 | A kind of air-treatment unit and high/low temperature switched system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266398A (en) * | 2014-10-20 | 2015-01-07 | 深圳麦克维尔空调有限公司 | Air handling unit and high temperature and low temperature switching system thereof |
-
2014
- 2014-10-20 CN CN201420606048.2U patent/CN204165263U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266398A (en) * | 2014-10-20 | 2015-01-07 | 深圳麦克维尔空调有限公司 | Air handling unit and high temperature and low temperature switching system thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20151020 |
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| EXPY | Termination of patent right or utility model |