CN202501649U - Refrigeration equipment - Google Patents
Refrigeration equipment Download PDFInfo
- Publication number
- CN202501649U CN202501649U CN2012200400852U CN201220040085U CN202501649U CN 202501649 U CN202501649 U CN 202501649U CN 2012200400852 U CN2012200400852 U CN 2012200400852U CN 201220040085 U CN201220040085 U CN 201220040085U CN 202501649 U CN202501649 U CN 202501649U
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- Prior art keywords
- heat exchanger
- compressor
- refrigeration equipment
- indoor heat
- outdoor heat
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Abstract
The utility model relates to refrigeration equipment and specifically discloses the refrigeration equipment which is more adaptive to R32 refrigerant. The refrigeration equipment comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger and a throttling element, wherein the compressor and the throttling element are respectively connected with the outdoor heat exchanger and the indoor heat exchanger through pipelines, the throttling element comprises two sets of capillary tube branch circuits in parallel, one set of the capillary tube branch circuits is connected in series with a pressure relief valve. By opening the pressure relief branch circuit in the refrigeration equipment, high and low pressure difference of the refrigeration equipment system is reduced, so exhaust temperature of the refrigeration equipment employing the R32 refrigerant can be effectively reduced under adverse working condition so as to obviously improve operating condition of the compressor and increase reliability of the refrigeration equipment system.
Description
Technical field
The utility model relates to technical field of refrigeration equipment, especially relates to a kind of refrigerating plant that can better be suitable for the R32 cold-producing medium.
Background technology
The cardinal principle of refrigeration plant be exactly utilize cold-producing medium between gaseous state and liquid state each other conversion absorb heat with heat release to reduce indoor temperature.So the physical property of cold-producing medium directly influences the refrigeration of refrigeration plant.And on its concrete structure of refrigeration plant of employing different refrigerants some differences are arranged also.Though traditional cold-producing medium R22 can satisfy the needs on the performance, the material because R22 can damage the ozone layer is run counter to environmental protection concept, is substituted by cold-producing medium R32 of a new generation or R410A gradually.As the cold-producing medium of a new generation, R32 is lower owing to its GWP value, thermal property good, combustibility is little, combustion intensity is low gets most of the attention.But on the cold-producing medium physical property, the delivery temperature of R32 exceeds 15 ℃ than R410A in theory.If excessive discharge temperature can cause E class F insulating material F deterioration, reduce the compressor long-term reliability.
The refrigeration plant of available technology adopting R32 to the high characteristic of R32 delivery temperature, mainly adopts resistant to elevated temperatures compressor; Perhaps adopt the hydrojet cooling technology; Perhaps increase the condenser area, improve the outdoor motor rotating speed, to improve radiating effect.But all there is certain defective in these technology, if adopt high temperature resistant compressor, mean that needs adopt resistant to elevated temperatures insulating materials, resistant to elevated temperatures electromagnetic wire, resistant to elevated temperatures refrigerator oil, and these all can improve the cost of compressor greatly; If adopt the hydrojet cooling compressor, needing increases liquid-jet device, and complex structure also can improve the refrigerating plant cost, and can reduce compressor performance; If increase the condenser area, improve the outdoor motor rotating speed, not only can improve the cost of refrigerating plant, also can increase the volume of air-conditioning.
The utility model content
Result of the test shows that delivery temperature raises along with the rising of environment temperature.Under common environment temperature, the delivery temperature of R32 is not high, can not influence the long-term reliability of compressor.The utility model is exactly to start with to consider how to solve the problem that exists the above-mentioned prior art from this respect, thereby has designed a kind of simple in structurely, with low cost, and can better be suitable for the refrigerating plant of R32 cold-producing medium.
The concrete scheme of the utility model is: a kind of refrigerating plant; Comprise compressor, outdoor heat exchanger, indoor heat exchanger, restricting element; Wherein compressor is connected with the indoor heat exchanger pipeline with outdoor heat exchanger respectively with restricting element; Restricting element comprises the capillary branch road of two groups of parallel connections, is in series with relief valve on one group of capillary branch road wherein.
The operation principle of the utility model is: preestablish a critical-temperature to relief valve; When environment temperature subcritical temperature, the relief valve state that keeps shut, this moment is because environment temperature is low; The pressure differential of outdoor heat exchanger and indoor heat exchanger can be not excessive; Get final product through the work of single capillary branch road, the delivery temperature of R32 is not high, can not influence the long-term stability operation of compressor; When environment temperature during greater than critical-temperature; Relief valve is just opened, and the capillary branch road of two parallel connections this moment is worked simultaneously, thereby reduces the pressure differential of outdoor heat exchanger and indoor heat exchanger; Make the delivery temperature of R32 can be not too high, improve the long-time running reliability of compressor.Simultaneously, through appropriate design branch road size capillaceous, can guarantee that liquid hammer does not take place compressor.
In order better to be suitable for the R32 cold-producing medium, above-mentioned compressor can adopt rotary compressor or scroll compressor.
The utility model both can be used for the refrigerating plant of separate refrigeration, also can be used in the changes in temperature refrigerating plant that cross valve has been installed; The one-to-one or one that both can be used in a compressor drags in many refrigerating plants, also can be used in many couplet refrigerating plant of multiple compressors.
The refrigerating plant of the utility model increases relief valve in a parallel branch capillaceous, just can reduce the height pressure differential of refrigerating plant system through opening the mode of pressure release branch road; Can effectively reduce the delivery temperature of refrigerating plant under bad working environments that adopts the R32 cold-producing medium; Obviously improve the running operating mode of compressor, improve the reliability of refrigerating plant system, and simple in structure; With low cost, flexible operation.
Description of drawings
Fig. 1 is the sketch map of the refrigerating plant of the utility model embodiment 1;
Fig. 2 is the sketch map of the refrigerating plant of the utility model embodiment 2.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
Embodiment 1: as shown in Figure 1; A kind of refrigerating plant of separate refrigeration; Comprise scroll compressor 1, outdoor heat exchanger 3, indoor heat exchanger 4, restricting element; Wherein compressor 1 is connected with indoor heat exchanger 4 pipelines with outdoor heat exchanger 3 respectively with restricting element, and restricting element comprises the main capillary 5 and branch road capillary 6 of parallel connection, is in series with relief valve 7 on the branch road at branch road capillary 6 places.
Present embodiment preestablishes a critical-temperature for earlier relief valve 7; When environment temperature subcritical temperature, relief valve 7 state that keeps shut, this moment is because environment temperature is low; The pressure differential of outdoor heat exchanger 3 and indoor heat exchanger 4 can be not excessive; Get final product through single main capillary 5 work, the delivery temperature of R32 is not high, can not influence the long-term stability operation of compressor 1.
When environment temperature during greater than critical-temperature; Relief valve 7 is opened, and the main capillary 5 of parallel connection this moment is worked with branch road capillary 6 simultaneously, reduces the pressure differential of outdoor heat exchanger 3 and indoor heat exchanger 4; Make the delivery temperature of R32 can be not too high, improve the long-time running reliability of compressor 1.
Embodiment 2: as shown in Figure 2, present embodiment and embodiment 1 are basic identical, and difference is to be to have installed additional cross valve 2, can realize freezing and the switching of the two kinds of duties that heat.When refrigerating plant was in the refrigeration work state, its ruuning situation was identical with embodiment 1.When refrigerating plant is in heating during duty, its operation principle is identical during with the refrigeration work state, but opposite when the pressure differential of outdoor heat exchanger 3 and indoor heat exchanger 4 and refrigeration work state.
Claims (2)
1. refrigerating plant; Comprise compressor, outdoor heat exchanger, indoor heat exchanger, restricting element; Wherein compressor is connected with the indoor heat exchanger pipeline with outdoor heat exchanger respectively with restricting element; Restricting element comprises the capillary branch road of two groups of parallel connections, it is characterized in that: be in series with relief valve on one group of capillary branch road in the described restricting element.
2. refrigerating plant according to claim 1 is characterized in that: described compressor is rotary compressor or scroll compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200400852U CN202501649U (en) | 2012-02-06 | 2012-02-06 | Refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200400852U CN202501649U (en) | 2012-02-06 | 2012-02-06 | Refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202501649U true CN202501649U (en) | 2012-10-24 |
Family
ID=47038261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200400852U Expired - Fee Related CN202501649U (en) | 2012-02-06 | 2012-02-06 | Refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202501649U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109891164A (en) * | 2016-10-28 | 2019-06-14 | 三菱电机株式会社 | Air conditioner |
| CN110678707A (en) * | 2017-05-26 | 2020-01-10 | 三菱电机株式会社 | Refrigeration cycle device |
-
2012
- 2012-02-06 CN CN2012200400852U patent/CN202501649U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109891164A (en) * | 2016-10-28 | 2019-06-14 | 三菱电机株式会社 | Air conditioner |
| US20200018530A1 (en) * | 2016-10-28 | 2020-01-16 | Mitsubishi Electric Corporation | Air conditioner |
| US20210172659A1 (en) * | 2016-10-28 | 2021-06-10 | Mitsubishi Electric Corporation | Air conditioner |
| US20210180842A1 (en) * | 2016-10-28 | 2021-06-17 | Mitsubishi Electric Corporation | Air conditioner |
| CN110678707A (en) * | 2017-05-26 | 2020-01-10 | 三菱电机株式会社 | Refrigeration cycle device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20190206 |