CN204757427U - High -efficient refrigerating unit - Google Patents
High -efficient refrigerating unit Download PDFInfo
- Publication number
- CN204757427U CN204757427U CN201520387390.2U CN201520387390U CN204757427U CN 204757427 U CN204757427 U CN 204757427U CN 201520387390 U CN201520387390 U CN 201520387390U CN 204757427 U CN204757427 U CN 204757427U
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- CN
- China
- Prior art keywords
- compressor
- evaporimeter
- low pressure
- circulating pump
- pressure recycle
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Abstract
The utility model discloses a high -efficient refrigerating unit in the refrigeration plant field, including compressor, oil separator, condenser, high -pressure cistern, filter, expansion valve and evaporimeter, the device still includes low -pressure circulation barrel and circulating pump, and low -pressure circulation barrel includes the gaseous phase space on upper portion and the liquid phase space of lower part, and compressor, oil separator, condenser, high -pressure cistern, filter, expansion valve and low -pressure circulation barrel end to end form the import switch -on of high -pressure circulation system, compressor the gaseous phase space, evaporimeter, circulating pump and low -pressure circulation barrel end to end form the import switch -on of low pressure circulation system, circulating pump the liquid phase space, oil separator's oil return opening is connected to the oil pan of compressor. Adopt circulating pump forced circulation, the refrigerant flow that gets into the evaporimeter is big, and its refrigeration effect is better, and heat exchange efficiency is higher, and simultaneously, the device can avoid the compressor liquid hammer. The utility model discloses can be used to the construction of various freezers.
Description
Technical field
The utility model relates to a kind of refrigeration unit, particularly a kind of refrigeration unit for freezer refrigerating.
Background technology
In prior art, the refrigerating plant for freezer mainly comprises the compressor, oil eliminator, condenser, liquid reservoir, filter, expansion valve and the evaporimeter that join end to end into closed system, and evaporimeter is arranged in freezer.During work, the cold-producing medium of gas phase is taken away from evaporimeter by compressor, enters condenser condenses again and become liquid refrigerant after compression, condensed liquid enters liquid reservoir, then vaporization heat absorption in evaporimeter after expansion valve, absorbs the latent heat of vaporization, reduces temperature of ice house.Its weak point is: cold-producing medium is vaporization heat absorption in evaporimeter, for the suction of guarantee compressor suction inlet is gas, therefore, evaporimeter needs enough large gas-phase space, can not be full of by liquid refrigerant, otherwise, easily there is liquid refrigerant directly to enter compressor, cause liquid hammer, damage compressor.In addition, by directly vaporizing in evaporimeter after expansion valve, its circular flow is relatively less, and heat exchange inefficiency is low.
Utility model content
The purpose of this utility model is to provide a kind of highly effective refrigeration unit, and its heat exchange efficiency is high, safe and reliable, can avoid compressor liquid hammer.
The purpose of this utility model is achieved in that a kind of highly effective refrigeration unit, comprise compressor, oil eliminator, condenser, high pressure receiver, filter, expansion valve and evaporimeter, this device also comprises low pressure recycle bucket and circulating pump, low pressure recycle bucket comprises the gas-phase space on top and the liquid Space of bottom, compressor, oil eliminator, condenser, high pressure receiver, filter, expansion valve and low pressure recycle bucket join end to end formation high-pressure recycle system, and described gas-phase space is connected in the import of compressor; Evaporimeter, circulating pump and low pressure recycle bucket join end to end and form low pressure recycle system, and described liquid Space is connected in the import of circulating pump; The oil return opening of oil eliminator is connected to the oil sump of compressor.
During the work of this device, major circulatory system and low pressure recycle system carry out the exchange of cold-producing medium in low pressure recycle bucket, the cold-producing medium of gas phase is taken away by compressor, enter condenser condenses after compression again and become liquid, condensed liquid enters high pressure receiver, then the liquid refrigerant forming low-temp low-pressure after expansion valve enters low pressure recycle bucket, liquid refrigerant in low pressure recycle bucket is recycled pump and is input to evaporimeter, and evaporate under corresponding low pressure, draw heat around, cold-producing medium enters in low pressure recycle bucket under gaseous state or gas-liquid mixed state, gas-liquid is natural separation in low pressure recycle bucket, what can ensure to enter compressor is gas, to avoid liquid hammer.In addition, adopt circulating pump forced circulation, the refrigerant flow entering evaporimeter enters the flow of evaporimeter in prior art by expansion valve, and no matter in evaporimeter liquid cold-producing medium whether be full of, all can not cause the danger of liquid hammer to compressor.Because refrigerant circulation flow is large, its refrigeration is better, and heat exchange efficiency is higher.The utility model can be used for the construction of various freezer.
As further improvement of the utility model, described compressor is helical-lobe compressor, and compressor parallel is provided with two.Two helical-lobe compressors can parallel running, also can be for subsequent use each other.The rated power of two helical-lobe compressors, than being 1:2, can have 1/3 load, 2/3 load and fully loaded multiple choices.
As further improvement of the utility model, be provided with Siphon pot between described high pressure receiver and evaporimeter, the bottom inlet of Siphon pot is connected to bottom high pressure receiver, and the top exit of Siphon pot is connected to condenser inlet.Siphon pot can the pressure of balancing evaporator and high pressure receiver, when condensing pressure is very low in evaporimeter, liquid siphon in high pressure receiver can be entered evaporimeter, again cool, can further improve heat transfer effect by Siphon pot.
Further improvement of the utility model is, described circulating pump is centrifugal pump.Centrifugal pump low price, install convenient management, meanwhile, centrifugal pump not easily transships, and uses reliable.
As further improvement of the utility model, the volume of described low pressure recycle bucket can hold the whole liquefied refrigerants in unit.Even if all liquid cold-producing medium all enters in low pressure recycle bucket, what still can ensure that compressor suction inlet sucks is gas, fully can avoid liquid hammer.Certainly, by arranging fluid level control device on low pressure recycle bucket, also can avoid compressor liquid hammer, and not needing the volume of low pressure recycle bucket to do very large.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present utility model.
Detailed description of the invention
As shown in Figure 1, for a kind of highly effective refrigeration unit, its structure mainly comprises compressor, oil eliminator, condenser, high pressure receiver, filter, expansion valve, evaporimeter, low pressure recycle bucket and circulating pump, low pressure recycle bucket comprises the gas-phase space A on top and the liquid Space B of bottom, compressor, oil eliminator, condenser, high pressure receiver, filter, expansion valve and low pressure recycle bucket join end to end formation high-pressure recycle system, and gas-phase space A is connected in the import of compressor; Evaporimeter, circulating pump and low pressure recycle bucket join end to end and form low pressure recycle system, and liquid Space B is connected in the import of circulating pump; The oil return opening of oil eliminator is connected to the oil sump of compressor.Compressor is helical-lobe compressor, and compressor parallel is provided with two.Two helical-lobe compressors can parallel running, also can be for subsequent use each other.The rated power of two helical-lobe compressors, than being 1:2, can have 1/3 load, 2/3 load and fully loaded multiple choices.Be provided with Siphon pot between high pressure receiver and evaporimeter, the bottom inlet of Siphon pot is connected to bottom high pressure receiver, and the top exit of Siphon pot is connected to condenser inlet.
In this device, circulating pump is centrifugal pump.Centrifugal pump low price, install convenient management, meanwhile, centrifugal pump not easily transships, and uses reliable.
Further, the volume of described low pressure recycle bucket can hold the whole liquefied refrigerants in unit.Even if all liquid cold-producing medium all enters in low pressure recycle bucket, what still can ensure that compressor suction inlet sucks is gas, fully can avoid liquid hammer.Certainly, by arranging fluid level control device on low pressure recycle bucket, also can avoid compressor liquid hammer, and not needing the volume of low pressure recycle bucket to do very large.
During the work of this device, major circulatory system and low pressure recycle system carry out the exchange of cold-producing medium in low pressure recycle bucket, the cold-producing medium of gas phase is taken away by compressor, enter condenser condenses after compression again and become liquid, condensed liquid enters high pressure receiver, then the liquid refrigerant forming low-temp low-pressure after expansion valve enters low pressure recycle bucket, liquid refrigerant in low pressure recycle bucket is recycled pump and is input to evaporimeter, and evaporate under corresponding low pressure, draw heat around, cold-producing medium enters in low pressure recycle bucket under gaseous state or gas-liquid mixed state, gas-liquid is natural separation in low pressure recycle bucket, what can ensure to enter compressor suction inlet is gas, to avoid liquid hammer.In addition, adopt circulating pump forced circulation, the refrigerant flow entering evaporimeter enters the flow of evaporimeter in prior art by expansion valve, and no matter in evaporimeter liquid cold-producing medium whether be full of, all can not cause the danger of liquid hammer to compressor.Because refrigerant circulation flow is large, its refrigeration is better, and heat exchange efficiency is higher.
The utility model is not limited to above-described embodiment; on the basis of technical scheme disclosed in the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some to some technical characteristics wherein to replace and distortion, these are replaced and are out of shape all in protection domain of the present utility model.
Claims (6)
1. a highly effective refrigeration unit, comprise compressor, oil eliminator, condenser, high pressure receiver, filter, expansion valve and evaporimeter, characterized by further comprising low pressure recycle bucket and circulating pump, low pressure recycle bucket comprises the gas-phase space on top and the liquid Space of bottom, compressor, oil eliminator, condenser, high pressure receiver, filter, expansion valve and low pressure recycle bucket join end to end formation high-pressure recycle system, and described gas-phase space is connected in the import of compressor; Evaporimeter, circulating pump and low pressure recycle bucket join end to end and form low pressure recycle system, and described liquid Space is connected in the import of circulating pump; The oil return opening of oil eliminator is connected to the oil sump of compressor.
2. a kind of highly effective refrigeration unit according to claim 1, is characterized in that: described compressor is helical-lobe compressor, and compressor parallel is provided with two.
3. a kind of highly effective refrigeration unit according to claim 2, is characterized in that: the rated power of two helical-lobe compressors is than being 1:2.
4. a kind of highly effective refrigeration unit according to any one of claim 1-3, it is characterized in that: between described high pressure receiver and evaporimeter, be provided with Siphon pot, the bottom inlet of Siphon pot is connected to bottom high pressure receiver, and the top exit of Siphon pot is connected to condenser inlet.
5. a kind of highly effective refrigeration unit according to any one of claim 1-3, is characterized in that: described circulating pump is centrifugal pump.
6. a kind of highly effective refrigeration unit according to any one of claim 1-3, is characterized in that: the volume of described low pressure recycle bucket can hold the whole liquefied refrigerants in unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387390.2U CN204757427U (en) | 2015-06-08 | 2015-06-08 | High -efficient refrigerating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520387390.2U CN204757427U (en) | 2015-06-08 | 2015-06-08 | High -efficient refrigerating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204757427U true CN204757427U (en) | 2015-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520387390.2U Expired - Fee Related CN204757427U (en) | 2015-06-08 | 2015-06-08 | High -efficient refrigerating unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN204757427U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091459A (en) * | 2016-06-06 | 2016-11-09 | 济南欧菲特制冷设备有限公司 | A kind of integral type refrigerating system unit |
| CN106196701A (en) * | 2016-06-28 | 2016-12-07 | 福建雪人股份有限公司 | For the refrigeration system to building site cooling |
| CN112629091A (en) * | 2021-01-12 | 2021-04-09 | 乳山市创新新能源科技有限公司 | LNG cold energy recovery and ice making system |
| CN114279102A (en) * | 2021-12-14 | 2022-04-05 | 南京恒标斯瑞冷冻机械制造有限公司 | Falling film type evaporation refrigeration system and working method |
-
2015
- 2015-06-08 CN CN201520387390.2U patent/CN204757427U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091459A (en) * | 2016-06-06 | 2016-11-09 | 济南欧菲特制冷设备有限公司 | A kind of integral type refrigerating system unit |
| CN106196701A (en) * | 2016-06-28 | 2016-12-07 | 福建雪人股份有限公司 | For the refrigeration system to building site cooling |
| CN106196701B (en) * | 2016-06-28 | 2019-07-23 | 福建雪人股份有限公司 | For the refrigeration system to building site cooling supply |
| CN112629091A (en) * | 2021-01-12 | 2021-04-09 | 乳山市创新新能源科技有限公司 | LNG cold energy recovery and ice making system |
| CN114279102A (en) * | 2021-12-14 | 2022-04-05 | 南京恒标斯瑞冷冻机械制造有限公司 | Falling film type evaporation refrigeration system and working method |
| CN114279102B (en) * | 2021-12-14 | 2023-12-29 | 南京恒标斯瑞冷冻机械制造有限公司 | Falling film type evaporation cold refrigerating system and working method |
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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: 20151111 Termination date: 20190608 |