CN206113390U - Reverse defrosting refrigerating system - Google Patents
Reverse defrosting refrigerating system Download PDFInfo
- Publication number
- CN206113390U CN206113390U CN201621055215.4U CN201621055215U CN206113390U CN 206113390 U CN206113390 U CN 206113390U CN 201621055215 U CN201621055215 U CN 201621055215U CN 206113390 U CN206113390 U CN 206113390U
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- mouths
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- way change
- over valve
- valve
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Abstract
The utility model relates to a reverse defrosting refrigerating system, wherein, four -way reversing valve's d mouth and the gas vent of compressor intercommunication, four -way reversing valve's s mouth and the induction port of compressor intercommunication, serial connectivity condenser, reservoir, expansion valve and evaporimeter at least in proper order between four -way reversing valve's c mouth to the e mouth form refrigeration circuit respectively and do through switching four -way reversing valve from this evaporator defrosting's defrosting return circuit. Among the refrigeration circuit, the reservoir is in the high -pressure side, does high -pressure reservoir usefulness, in the defrosting return circuit, the reservoir is in the low tension side, and refrigerant liquid level wherein is fixed just generally in the bottom. The utility model discloses the system is simple, easily realizes, the system moves stably during the defrosting, and it is quick, thorough, high -efficient to defrost.
Description
Technical field
This utility model is related to refrigerating field, in particular to a kind of inverse defrosting refrigeration system.
Background technology
In order to ensure direct expansion air cooler normal work, when its surface frosting, just must defrost in good time.Remove
White mode mainly has water flushing, electric defrosting and hot gas defrosting.Hot gas defrosting is different according to refrigeration or heat pump Defrost mode
Also divide inverse defrosting and hot gas bypass defrosting.
Hot gas defrosting relative energy-saving, especially inverse defrosting than hot gas bypass defrosting more energy-conservation, but, in refrigerating
In the middle cryogenic refrigerating unit in field, inverse defrosting application is less.On the one hand it is because that inverse defrosting refrigeration system will consider double
To circulation, be on the other hand also most importantly inverse defrosting when defrosting pressure it is too low so that heating power expansion valve and system can not be just
Often work, and defrosting time length, effect are poor.
Utility model content
The purpose of this utility model is to solve the above problems.
The technical scheme that this utility model is provided is as follows：
A kind of inverse defrosting refrigeration system, comprising compressor, four-way change-over valve, condenser, reservoir, expansion valve, evaporation
Device, the four-way change-over valve is an electromagnetic valve, has d mouths, e mouths, s mouths, four connectors of c mouths, and with two operative positions
Put, when the four-way change-over valve is in first operating position, its d mouth is connected with c mouths and e mouths are connected with s mouths, and the four-way is changed
When being in second operating position to valve, its d mouth is connected with e mouths and c mouths are connected with s mouths, the d mouths of the four-way change-over valve and institute
The air vent connection of compressor is stated, the s mouths of the four-way change-over valve are connected with the air entry of the compressor, the four-way commutation
The c mouths of valve are to being at least sequentially connected in series the connection condenser, the reservoir, the expansion valve, the vaporizer between e mouths；
The refrigeration system includes refrigerating circuit, and in the refrigerating circuit, the four-way change-over valve is in first operating position,
The air vent of the compressor, the d mouths of the four-way change-over valve, the c mouths of the four-way change-over valve, the condenser, the storage
Liquid device, the expansion valve, the vaporizer, the e mouths of the four-way change-over valve, the s mouths of the four-way change-over valve, the compressor
Air entry be sequentially communicated；The refrigeration system is also included as the defrosting loop of the vaporizer defrosting, in the defrosting loop,
The four-way change-over valve be in second operating position, the air vent of the compressor, the d mouths of the four-way change-over valve,
The e mouths of the four-way change-over valve, the vaporizer, the expansion valve, the reservoir, the condenser, four-way commutation
The c mouths of valve, the s mouths of the four-way change-over valve, the air entry of the compressor are sequentially communicated.
Preferential, the expansion valve is heating power expansion valve.
Further, the vaporizer is air cooling heat exchanger, and its spacing of fin is not less than 3mm.
Preferential, the reservoir includes cylinder and coolant turnover connecting pipe, and the coolant passes in and out connecting pipe in institute
State the coolant in cylinder and import and export the latter half for being respectively positioned on space in the cylinder.
Preferential, the coolant of the reservoir passes in and out coolant of the connecting pipe in the cylinder and imports and exports apart from the cylinder
In vivo the minimum range of bottom is respectively less than 5 centimetres.
Preferential, the coolant of the reservoir passes in and out coolant of the connecting pipe in the cylinder and imports and exports apart from the cylinder
In vivo the minimum range of bottom is not less than 2mm and no more than 15mm.
Preferential, the reservoir is horizontal reservoir.
Further, also go here and there on the connecting pipe between the s mouths of the four-way change-over valve and the air entry of the compressor
Connection is provided with gas-liquid separator.
Preferential, the first filter has been arranged in series on the connecting pipe between the reservoir and the expansion valve.
Preferential, the second filter has been arranged in series on the connecting pipe between the vaporizer and the expansion valve.
Based on above-mentioned technical proposal, this utility model employs two-way reservoir, and in inverse defrosting, the two-way storage
Liquid device be in low-pressure side, liquid level therein be it is fixed, it is cold in reservoir depending on the refrigerant exit pipe of now reservoir
The height (typically in bottom) of matchmaker's import, the vaporizer that at this moment reservoir does not almost have liquid storage function, frosting is now in high pressure
Side and cold-producing medium therein is more, so that condensing pressure during defrosting is slightly higher, degree of supercooling is larger, heating power expansion valve and system here
When equal reliably working, defrosting is quick, thoroughly, efficiently.
Description of the drawings
Fig. 1 is the theory of constitution schematic diagram of this utility model refrigeration system first embodiment.
Fig. 2 is the theory of constitution schematic diagram of the reservoir first embodiment that this utility model is adopted.
Fig. 3 is the theory of constitution schematic diagram of the reservoir second embodiment that this utility model is adopted.
Specific embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is described in further detail.
Fig. 1 show the theory of constitution schematic diagram of this utility model refrigeration system first embodiment.Including compressor
11st, four-way change-over valve 61, condenser 21, reservoir 01, the first filter 71, two-way heating power expansion valve 31, the second filter 72,
Vaporizer 41, gas-liquid separator 51.
Four-way change-over valve 61 is an electromagnetic valve, has d mouths, e mouths, s mouths, four connectors of c mouths, and with two operations
Position, during 61 power-off of four-way change-over valve, its d mouth is connected with c mouths and e mouths are connected with s mouths, on four-way change-over valve 61 during electricity, its d mouth
Connect with e mouths and c mouths are connected with s mouths.
The d mouths of four-way change-over valve 61 are connected with the air vent of the compressor 11, and the s mouths of four-way change-over valve 61 are through gas-liquid
Separator 51 is connected with the air entry of compressor 11, and the c mouths of four-way change-over valve 61 are to being sequentially connected in series connection condenser between e mouths
21st, reservoir 01, the first filter 71, two-way heating power expansion valve 31, the second filter 72, vaporizer 41.
During cooling system, the power-off of four-way change-over valve 61, the cold-producing medium of High Temperature High Pressure is sequentially passed through from after the output of compressor 11
The d mouths and c mouths of four-way change-over valve 61 enters condenser 21, and highly pressurised liquid, Ran Houjin are become after radiating condensation in condenser 21
Enter reservoir 01, then throttling in two-way heating power expansion valve 31 is entered after the first filter 71, low-temp low-pressure is become after throttling
Gas-liquid two-phase cold-producing medium, be then changed into low-pressure gas into evaporation endothermic in vaporizer 41 through the second filter 72, then according to
Secondary e mouths through four-way change-over valve 61, s mouths and gas-liquid separator 51, eventually pass back to the air entry of compressor 11, formed one it is complete
Whole kind of refrigeration cycle.Wherein, reservoir 01 is used as high-pressure reservoir, and the cold-producing medium having more than needed in system is stored in reservoir
In 01, so, under the environmental condition of various change, for nearly all no super cooled sect, condenser 21 in the condenser 21 of radiating
Heat exchange area be fully utilized, system effectiveness is higher.
With the increase of cooling system time, the frost layer on the surface of vaporizer 41 is more and more thicker, therefore, it is desirable to vaporizer 41
Defrosting.When system defrosts, electricity on four-way change-over valve 61, the cold-producing medium of High Temperature High Pressure sequentially passes through four from after the output of compressor 11
The d mouths and e mouths of logical reversal valve 61 enters vaporizer 41, and highly pressurised liquid is become after radiating condensation in vaporizer 41, subsequently into
Enter in two-way heating power expansion valve 31 through the second filter 72 and throttle, the gas-liquid two-phase refrigeration of low-temp low-pressure is become after throttling
Agent, then reservoir 01 is entered through the first filter 71, enter back into condenser from the gas-liquid two-phase cold-producing medium of the output of reservoir 01
Evaporation endothermic is changed into low-pressure gas in 21, then sequentially passes through c mouths, s mouths and the gas-liquid separator 51 of four-way change-over valve 61, finally
The air entry of compressor 11 is returned to, a complete defrosting circulation is completed.Wherein, the refrigerant level in reservoir 01 is the bottom of at
Portion, because continue into reservoir 01 is gas-liquid two-phase cold-producing medium, once the liquid level in reservoir 01 is higher, then from liquid storage
What is exported in device 01 is nearly all liquid refrigerant, and the gaseous refrigerant in such reservoir 01 is more and more, necessarily makes liquid level
Decline, until liquid level is down to the outlet connecting pipe now of reservoir 01 (is located at bottom in the refrigerant import position of its enclosure interior point
Portion), so from reservoir 01 export cold-producing medium also be gas-liquid two-phase, and with the gas-liquid of the cold-producing medium into reservoir 01
Ratio is almost consistent, the level stability in reservoir 01, system run all right.But the cold-producing medium now, in vaporizer 41 is more,
So that condensing pressure during defrosting is slightly higher, degree of supercooling is larger, and heating power expansion valve and system equal reliably working at this moment, defrosting is fast
It is fast, thorough, efficient.
Certainly, the refrigerant charge in system will be controlled, and the temperature-sensitive bag of heating power expansion valve 31 is to be placed in gas
On connecting pipe between liquid/gas separator 51 and the s mouths of four-way change-over valve 61, therefore the present embodiment is relatively specific for integral type
Freezing unit, or off-premises station (containing compressor and condenser) and indoor set (containing vaporizer) be same manufacturer production and advise
Good refrigerant charge.
Additionally, to ensure that efficient operation can be under various outdoor environmental conditions when refrigeration system is normally freezed
The degree of supercooling of outlet (condenser 21 almost nil), the volume of reservoir 01 and the coolant injection amount of system are general all larger, but
It is, it is not necessary to worry that the excessive condensing pressure down to defrosting of cold-producing medium during above-mentioned Defrost operation in vaporizer 41 is too high, because real
In the application of border, the spacing of fin of vaporizer 41 can be significantly greater than the spacing of fin of condenser 21, and the internal volume of vaporizer 41 also can
The significantly greater than internal volume of condenser 21.So, there is the charging amount of rational coolant, when refrigeration system can be made normally to freeze
Efficient operation (degree of supercooling of condensator outlet is almost nil) can be under various outdoor environmental conditions, can make to remove again
Condensing pressure during frost operation in vaporizer 41 is in reasonable level.Certainly, even if cold in vaporizer 41 in Defrost operation
Matchmaker is really more so that the condensing pressure of defrosting is too high, can pass through to increase the refrigerant exit Guan Qi now of reservoir 01 completely
The height of the refrigerant import position of enclosure interior point to make now reservoir 01 in liquid level raise so as to reduce vaporizer 41
Coolant quantity and condensing pressure.
Fig. 2 show the theory of constitution schematic diagram of the reservoir first embodiment of this utility model employing.This is a kind of vertical
Formula reservoir, including the turnover turnover connecting tube 92 of connecting tube 91 and second of cylinder 00, first.First turnover connecting tube 91 is in cylinder
Coolant in 00 imports and exports 81 bottoms being located in cylinder 00, coolant import and export 81 bottom apart from the inner bottom part of cylinder 00 away from
From about 5mm to 10mm, it 81 is not parallel with the bottom in cylinder 00 that coolant is imported and exported, but has one about 30 degree to 60 degree
Angle.Equally, coolant of the second turnover connecting tube 92 in cylinder 00 imports and exports 82 bottoms also being located in cylinder 00, and coolant enters
The bottom of outlet 82 is also about 5mm to 10mm apart from the distance of the inner bottom part of cylinder 00, and coolant is imported and exported in 82 and cylinder 00
There is one about 30 degree to 60 degree of angle bottom nor parallel.
Fig. 3 show the theory of constitution schematic diagram of the reservoir second embodiment of this utility model employing.This is a kind of sleeping
Formula reservoir, including the turnover turnover connecting tube 92 of connecting tube 91 and second of cylinder 00, first.First turnover connecting tube 91 is in cylinder
Coolant in 00 imports and exports 81 bottoms being located in cylinder 00, coolant import and export 81 bottom apart from the inner bottom part of cylinder 00 away from
From about 5mm to 10mm, it 81 is not parallel with the bottom in cylinder 00 that coolant is imported and exported, but has one about 30 degree to 60 degree
Angle.Equally, coolant of the second turnover connecting tube 92 in cylinder 00 imports and exports 82 bottoms also being located in cylinder 00, and coolant enters
The bottom of outlet 82 is also about 5mm to 10mm apart from the distance of the inner bottom part of cylinder 00, and coolant is imported and exported in 82 and cylinder 00
There is one about 30 degree to 60 degree of angle bottom nor parallel.
This horizontal reservoir is with the vertical reservoir difference of a upper embodiment, horizontal liquid storage cylinder 00
Lateral dimension is more than longitudinal size, and the longitudinal size of vertical liquid storage cylinder 00 is more than lateral dimension.Compare above-mentioned vertical
Reservoir, be using the advantage of this horizontal reservoir, from the cold-producing medium and the refrigeration from the turnover of port 82 of the turnover of port 81
Interference between agent is less, and system stability is high, such as when doing high-pressure reservoir and using, more can guarantee that defeated from high-pressure reservoir
What is gone out is the cold-producing medium of full liquid.Therefore, in actual applications, if conditions permit, preferentially using horizontal reservoir.
Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, is not limited to
This utility model, for a person skilled in the art, this utility model can have various modifications and variations.So, it is all
Any modification, equivalence replacement, improvement made within spirit of the present utility model and principle etc., should be included in this utility model
Protection domain within.
Claims (10)
1. a kind of inverse defrosting refrigeration system, comprising compressor (11), four-way change-over valve (61), condenser (21), reservoir
(01), expansion valve (31), vaporizer (41), the four-way change-over valve (61) is an electromagnetic valve, has d mouths, e mouths, s mouths, c mouths
Four connectors, and with two operating positions, the four-way change-over valve (61) in first operating position when, its d mouth and c
Mouthful connection and e mouths connect with s mouths, the four-way change-over valve (61) in second operating position when, its d mouth is connected and c with e mouths
Mouth is connected with s mouths, it is characterised in that：
The d mouths of the four-way change-over valve (61) are connected with the air vent of the compressor (11), the s of the four-way change-over valve (61)
Mouthful connect with the air entry of the compressor (11), the c mouths of the four-way change-over valve (61) are at least company of being sequentially connected in series between e mouths
The logical condenser (21), the reservoir (01), the expansion valve (31), the vaporizer (41)；
Comprising refrigerating circuit, in the refrigerating circuit, the four-way change-over valve (61) is described in first operating position
The air vent of compressor (11), the d mouths of the four-way change-over valve (61), the c mouths of the four-way change-over valve (61), the condenser
(21), the reservoir (01), the expansion valve (31), the vaporizer (41), the e mouths of the four-way change-over valve (61), institute
State the s mouths of four-way change-over valve (61), the air entry of the compressor (11) to be sequentially communicated；
Also it is included as the defrosting loop of the vaporizer (41) defrosting, in the defrosting loop, four-way change-over valve (61) place
In second operating position, the air vent of the compressor (11), the d mouths of the four-way change-over valve (61), the four-way
The e mouths of reversal valve (61), the vaporizer (41), the expansion valve (31), the reservoir (01), the condenser (21),
The c mouths of the four-way change-over valve (61), the s mouths of the four-way change-over valve (61), the air entry of the compressor (11) connect successively
It is logical.
2. a kind of inverse defrosting refrigeration system according to claim 1, it is characterised in that：
The expansion valve (31) is heating power expansion valve.
3. a kind of inverse defrosting refrigeration system according to any one of claim 1 or 2, it is characterised in that：
The vaporizer (41) is air cooling heat exchanger, and its spacing of fin is not less than 3mm.
4. a kind of inverse defrosting refrigeration system according to claim 2, it is characterised in that：
The reservoir (01) includes cylinder (00) and coolant turnover connecting pipe (91,92), and the coolant passes in and out connecting pipe
The coolant of (91,92) in the cylinder (00) imports and exports the latter half that (81,82) are respectively positioned on the interior space of the cylinder (00).
5. a kind of inverse defrosting refrigeration system according to claim 4, it is characterised in that：
Coolant turnover connecting pipe (the 91,92) coolant in the cylinder (00) of the reservoir (01) import and export (81,
82) minimum range apart from the cylinder (00) inner bottom part is respectively less than 5 centimetres.
6. a kind of inverse defrosting refrigeration system according to claim 5, it is characterised in that：
Coolant turnover connecting pipe (the 91,92) coolant in the cylinder (00) of the reservoir (01) import and export (81,
82) minimum range apart from the cylinder (00) inner bottom part is not less than 2mm and no more than 15mm.
7. a kind of inverse defrosting refrigeration system according to any one of claim 4 to 6, it is characterised in that：
The reservoir (01) is horizontal reservoir.
8. a kind of inverse defrosting refrigeration system according to claim 2, it is characterised in that：
Also it is arranged in series on connecting pipe between the s mouths of four-way change-over valve (61) and the air entry of the compressor (11)
There is gas-liquid separator (51).
9. a kind of inverse defrosting refrigeration system according to claim 8, it is characterised in that：
The first filter (71) has been arranged in series on connecting pipe between the reservoir (01) and the expansion valve (31).
10. a kind of inverse defrosting refrigeration system according to claim 9, it is characterised in that：
The second filter (72) has been arranged in series on connecting pipe between the vaporizer (41) and the expansion valve (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621055215.4U CN206113390U (en) | 2016-09-14 | 2016-09-14 | Reverse defrosting refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621055215.4U CN206113390U (en) | 2016-09-14 | 2016-09-14 | Reverse defrosting refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206113390U true CN206113390U (en) | 2017-04-19 |
Family
ID=58520586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621055215.4U Expired - Fee Related CN206113390U (en) | 2016-09-14 | 2016-09-14 | Reverse defrosting refrigerating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206113390U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946333A (en) * | 2019-03-13 | 2019-06-28 | 内蒙古综合交通科学研究院有限责任公司 | It assesses Frozen-thawed cycled and acts on lower cement concrete anti-freezing property device and method |
-
2016
- 2016-09-14 CN CN201621055215.4U patent/CN206113390U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946333A (en) * | 2019-03-13 | 2019-06-28 | 内蒙古综合交通科学研究院有限责任公司 | It assesses Frozen-thawed cycled and acts on lower cement concrete anti-freezing property device and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20190914 |
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| CF01 | Termination of patent right due to non-payment of annual fee |