CN202393113U - Refrigerating device - Google Patents
Refrigerating device Download PDFInfo
- Publication number
- CN202393113U CN202393113U CN2011204315233U CN201120431523U CN202393113U CN 202393113 U CN202393113 U CN 202393113U CN 2011204315233 U CN2011204315233 U CN 2011204315233U CN 201120431523 U CN201120431523 U CN 201120431523U CN 202393113 U CN202393113 U CN 202393113U
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- Prior art keywords
- compressor
- heat exchanger
- stop valve
- refrigerating plant
- valve
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- Rotary Pumps (AREA)
Abstract
The utility model discloses a refrigerating device which comprises a compressor, a throttling element and a heat exchanger, wherein a stop valve which prevents a refrigerant from flowing to the internal space of the compressor from the heat exchanger is arranged between the internal space of the compressor and the heat exchanger; the heat exchanger comprises an outdoor heat exchanger, and the stop valve is connected between the compressor and the outdoor heat exchanger in series; the heat exchanger comprises an indoor heat exchanger, and the stop valve is connected between the compressor and the indoor heat exchanger in series; a four-way valve is arranged between the compressor and the heat exchanger, and a stop valve is connected between the compressor and the four-way valve in series; a stop valve is connected between the discharge port of the compressor and the four-way valve in series, or the stop valve is connected between the air absorption port of the compressor and the four-way valve in series; the internal pressure of a shell of the compressor is high pressure; or the internal pressure of the shell of the compressor is low pressure; and the compressor is a rotary compressor or a scroll compressor. The refrigerating device provided by the utility model has the characteristics of simple and reasonable structure, flexibility in operation, high reliability and wide application range.
Description
Technical field
The utility model relates to a kind of refrigerating plant.
Background technology
Refrigerating plant mainly comprises compressor, heat exchanger, restricting element and control assembly etc.In refrigerating plant normal operation process, through the work of compressor, cold-producing medium is changed its physical state, thereby, in heat exchanger, carry out heat exchange, the purpose that reaches refrigeration or heat through circulation.
And compressor is as the critical piece in the refrigerating plant, and its life-span has directly determined the reliability of refrigerating plant.Yet; At some in particular cases, because the variation of refrigerating plant environment temperature cold-producing medium a large amount of circuitous phenomenons of moving in refrigerating plant usually can occur and occur; And in most cases; Be from heat exchanger, in the circuitous compressor of moving, finally to be deposited on compressor inside, thereby cause the lubricating oil of compressor to be diluted by a large amount of cold-producing mediums.In this case, behind compressor start, have a large amount of lubricating oil along with cold-producing medium is discharged compressor on the one hand; Thereby cause the lubricants capacity in the compressor not enough, on the other hand, because lubricating oil is diluted; At the compressor start initial stage, this diluted lubricating oil is fed in the moving component of compressor, can bring result lubricated and poor sealing; Thereby cause the performance of compressor to reduce, the life-span reduces, and finally has influence on the Performance And Reliability of refrigerating plant.Particularly in using the refrigerating plant of R290 as cold-producing medium; Owing to having enclosed and measure less lubricating oil in order to reduce amount of refrigerant; The discharge and the diluting effect of this lubricating oil are more obvious, also cause the reduction of compressor operating Performance And Reliability more easily.
, the compressor in the refrigerating plant presses when being the structure of low-pressure in being housing, because compressor directly is communicated with the air-breathing path of compressor, when a large amount of cold-producing mediums of appearance are deposited on compressor inside; Can cause compressor when starting, to suck a large amount of liquid refrigerants; The generation that causes hydraulic pressure to contract, and the liquid refrigerant in the housing is difficult to evaporate at short notice fully; Thereby very easily cause the damage of compression member, badly influence the reliability of compressor.
The utility model content
The purpose of the utility model aims to provide a kind of simple and reasonable, flexible operation, refrigerating plant that reliability is high, applied widely, to overcome weak point of the prior art.
A kind of refrigerating plant by this purpose design comprises compressor, restricting element and heat exchanger, and its architectural feature is between the inner space of compressor and heat exchanger, to be provided with to prevent that cold-producing medium from being flowed to the stop valve of the inner space of compressor by heat exchanger.
Said heat exchanger comprises outdoor heat exchanger, and stop valve is serially connected between compressor and the outdoor heat exchanger.
Said heat exchanger comprises indoor heat exchanger, and stop valve is serially connected between compressor and the indoor heat exchanger.
Be provided with cross valve between said compressor and the heat exchanger, stop valve is serially connected between compressor and the cross valve.
Said stop valve is serially connected between the outlet and cross valve of compressor; Perhaps, stop valve is serially connected between the air entry and cross valve of compressor.
Said compressor is the compressor of high pressure for enclosure interior pressure; Or compressor is the compressor of low pressure for enclosure interior pressure.
Said compressor is rotary compressor or scroll compressor.
The utility model is provided with between the enclosure interior space of compressor and heat exchanger and prevents that cold-producing medium from being flowed to the stop valve in the enclosure interior space of compressor by heat exchanger; Thereby can prevent under some special operation condition; A large amount of cold-producing mediums are from heat exchanger in the circuitous compressor of moving; Cause the lubricating oil in the compressor to be diluted, bring the lubricated and sealing problem of compressor moving component, have influence on the service behaviour and the reliability of compressor by serious.
When compressor is that traditional enclosure interior pressure is when being the compressor of high pressure; The high temperature and high pressure gas that this stop valve allows in compressor housing, to discharge enters into heat exchanger; Accomplish normal kind of refrigeration cycle; And when the situation that is easy to occur depositing occurred, stop valve can stop the refrigerant flow direction compressor inner, thereby the oil that occurs when having avoided compressor start is pulled away the lubricated and sealing problem that causes with lubricating oil dilution.
When compressor was the compressor of low pressure for enclosure interior pressure, when compressor start, this stop valve was opened, and was communicated with compressor compresses engine housing inside and the heat exchanger that is positioned at low-pressure side; Normal suction is accomplished compression and heat exchange circulation, and when compressor shutdown, this stop valve is closed; The cut-out heat exchanger is communicated with compressor, and perhaps, this stop valve has time-delay closing function; When compressor shutdown, this stop valve is through preset, behind the certain hour of delaying time as required; Stop valve is closed, and cuts off being communicated with of heat exchanger and compressor, thereby avoids occurring the contract generation of phenomenon of hydraulic pressure that the circuitous phenomenon of moving of above-mentioned cold-producing medium causes.
The utility model had both gone for not installing the separate refrigeration device of cross valve, also can be the changes in temperature refrigerating plant that cross valve is installed; Both can be that the one-to-one or that a compressor only has been installed drags many refrigerating plants, also can be many couplet refrigerating plant that multiple compressors is installed, and it has simple and reasonable, flexible operation, high, the advantage of wide range of application of reliability.
Description of drawings
Fig. 1 is the utility model first example structure sketch map.
Fig. 2 is the utility model second example structure sketch map.
Among the figure: 1 is compressor, and 2 is cross valve, and 3 is outdoor heat exchanger, and 4 is restricting element, and 5 is indoor heat exchanger, and 6 is stop valve, and A is the outlet of compressor, and B is the air entry of compressor; Arrow among the figure is the flow direction of cold-producing medium.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
First embodiment
Referring to Fig. 1, this refrigerating plant comprises compressor 1, restricting element 4 and heat exchanger, between the inner space of compressor 1 and heat exchanger, is provided with and prevents that cold-producing medium from being flowed to the stop valve 6 of the inner space of compressor 1 by heat exchanger.
Heat exchanger comprises outdoor heat exchanger 3, and stop valve 6 is serially connected between compressor 1 and the outdoor heat exchanger 3.Perhaps, heat exchanger comprises indoor heat exchanger 5, and stop valve 6 is serially connected between compressor 1 and the indoor heat exchanger 5.
Be provided with cross valve 2 between compressor 1 and the heat exchanger, stop valve 6 is serially connected between compressor 1 and the cross valve 2.
Compressor 1 is the compressor of high pressure for enclosure interior pressure; Or compressor 1 is the compressor of low pressure for enclosure interior pressure.Compressor 1 is rotary compressor or scroll compressor.
In the present embodiment, compressor 1 is the compressor of high pressure for enclosure interior pressure; Stop valve 6 is serially connected between the outlet A and cross valve 2 of compressor 1, and under the refrigerating plant normal operation, this stop valve 6 allows cold-producing mediums to flow to cross valve 2 by compressor 1, and gets into heat exchanger and carry out heat exchange, accomplishes refrigeration or heats circulation.
When compressor shutdown, this stop valve can be closed, and cuts off the outlet A of compressor 1 and the connection between the heat exchanger, thereby is easy to circuitous moving during situation about depositing when cold-producing medium occurring, avoids a large amount of cold-producing mediums to get back to compressor 1 inside from being positioned on high-tension side heat exchanger.Here, this stop valve 6 can be check valve, also can be the stop valve with time-delay closing function of Electromagnetic Control, also can be pressure controlled stop valve.When the pressure of sensing the outlet A place of compressor 1 after the shutdown equated with the pressure at the air entry B place of compressor 1 or is suitable, stop valve was closed.
For the separate refrigeration device that cross valve is not installed, being positioned on high-tension side heat exchanger is outdoor heat exchanger, and the heat exchanger that is positioned at low-pressure side is an indoor heat exchanger.
For the changes in temperature refrigerating plant that cross valve is installed, the heat exchanger that is positioned at high-pressure side or low-pressure side all both possibly be an outdoor heat exchanger, also possibly be indoor heat exchanger.
Second embodiment
Referring to Fig. 2, in the present embodiment, compressor 1 is the compressor of low pressure for enclosure interior pressure.Stop valve 6 is serially connected between the air entry B and cross valve 2 of compressor 1.
Under the refrigerating plant normal operation; This stop valve 6 allows cold-producing medium to be flowed to the air entry B of compressor 1 through cross valve 2 by the heat exchanger that is positioned at low-pressure side; Accomplish compression and be positioned on high-tension side heat exchanger thereby get into compressor 1, accomplish refrigeration or heat circulation through outlet A entering.And when compressor shutdown, this stop valve can be closed, and cuts off the air entry B of compressor 1 and the connection between the refrigerating plant, thereby is easy to circuitous moving during situation about depositing when cold-producing medium occurring, avoids a large amount of cold-producing mediums to get back to compressor 1 inside.
Here; This stop valve 6 can be through the startup of compressor 1 and shut down the electric check valve of controlling; It also can be stop valve with time-delay closing function through Electromagnetic Control; Can also be pressure controlled stop valve, when the pressure of sensing the outlet A place of compressor 1 after the shutdown equated with the pressure at the air entry B place of compressor 1 or is suitable, stop valve be closed.
All the other are not stated part and see first embodiment, no longer repeat.
Claims (7)
1. a refrigerating plant comprises compressor (1), restricting element (4) and heat exchanger, it is characterized in that between the inner space of compressor (1) and heat exchanger, being provided with preventing that cold-producing medium from being flowed to the stop valve (6) of the inner space of compressor (1) by heat exchanger.
2. refrigerating plant according to claim 1 is characterized in that said heat exchanger comprises outdoor heat exchanger (3), and stop valve (6) is serially connected between compressor (1) and the outdoor heat exchanger (3).
3. refrigerating plant according to claim 1 is characterized in that said heat exchanger comprises indoor heat exchanger (5), and stop valve (6) is serially connected between compressor (1) and the indoor heat exchanger (5).
4. refrigerating plant according to claim 1 is characterized in that being provided with between said compressor (1) and the heat exchanger cross valve (2), and stop valve (6) is serially connected between compressor (1) and the cross valve (2).
5. refrigerating plant according to claim 4 is characterized in that said stop valve (6) is serially connected between the outlet (A) and cross valve (2) of compressor (1); Perhaps, stop valve (6) is serially connected between the air entry (B) and cross valve (2) of compressor (1).
6. according to the arbitrary described refrigerating plant of claim 1 to 5, it is characterized in that said compressor (1) is the compressor of high pressure for enclosure interior pressure; Or compressor (1) is the compressor of low pressure for enclosure interior pressure.
7. refrigerating plant according to claim 6 is characterized in that said compressor (1) is rotary compressor or scroll compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204315233U CN202393113U (en) | 2011-11-03 | 2011-11-03 | Refrigerating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204315233U CN202393113U (en) | 2011-11-03 | 2011-11-03 | Refrigerating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202393113U true CN202393113U (en) | 2012-08-22 |
Family
ID=46668033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204315233U Expired - Lifetime CN202393113U (en) | 2011-11-03 | 2011-11-03 | Refrigerating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202393113U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015042970A1 (en) * | 2013-09-30 | 2015-04-02 | 广东美芝制冷设备有限公司 | Cooling system and heating system |
-
2011
- 2011-11-03 CN CN2011204315233U patent/CN202393113U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015042970A1 (en) * | 2013-09-30 | 2015-04-02 | 广东美芝制冷设备有限公司 | Cooling system and heating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |
|
| CX01 | Expiry of patent term |