CN205227930U - Serial -type two -stage thermal -arrest heat pump - Google Patents
Serial -type two -stage thermal -arrest heat pump Download PDFInfo
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- CN205227930U CN205227930U CN201521097077.1U CN201521097077U CN205227930U CN 205227930 U CN205227930 U CN 205227930U CN 201521097077 U CN201521097077 U CN 201521097077U CN 205227930 U CN205227930 U CN 205227930U
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- heat pump
- heat exchanger
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- arrest
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Abstract
The utility model belongs to the technical field of heat pump equipment, in particular to heat pump design that is applicable to low temperature environment, a serial -type two -stage thermal -arrest heat pump, includes single -stage -compression machine, split -compressor, first heat exchanger, second heat exchanger, third heat exchanger, one -level capillary and second grade capillary, the first heat pump return circuit of formation is connected in order to single -stage -compression machine, second heat exchanger, one -level capillary and first heat exchanger, formation second heat pump return circuit is connected in order to split -compressor, third heat exchanger, second grade capillary and second heat exchanger, the utility model relates to a serial -type two -stage thermal -arrest heat pump's beneficial effect: through concatenating two sets of heat pump return circuits to increase equipment such as energy storage water tank, it maintains the ability of compressor normal operating very big improvement under low temperature, and has expanded the function.
Description
Technical field:
The utility model belongs to heat-pump apparatus technical field, particularly a kind of Heat Pump Design being applicable to low temperature environment.
Background technology:
Heat pump be a kind of can by the heat energy of the low level hot-zones such as occurring in nature air, water or soil through acting enrichment, supply high-order hot-zone use heating equipment.
The operation principle of heat pump is the inverse application of compression refrigeration principle, comprises compressor, condenser, choke valve, evaporimeter.Its course of work is: the liquid refrigerant (such as freon) of low-temp low-pressure, first absorbs heat from low-temperature heat source (such as normal temperature air) and is gasificated into low-pressure steam evaporimeter (such as indoor apparatus of air conditioner) is inner.Then refrigerant gas is compressed into the steam of HTHP in compressor, and this high temperature and high pressure gas is condensed into highly pressurised liquid by low-temperature heat source (such as cooling water) cooling in condenser.Become low-temp low-pressure liquid refrigerant through restricting element (capillary, heating power expansion valve, electric expansion valve etc.) throttling again, reflux boiler completes circulation.
When heat pump works at low ambient temperatures, because evaporimeter heat absorption is not enough, the low-pressure steam quantity delivered of compressor reduces, and easily causes compressor operating inefficiency, and working curve is unstable, even can damage compressor because liquid working media sucks time serious.Publication number is that the patent of invention " a kind of tonifying Qi increases enthalpy screw compressor " of CN103195709A discloses a kind of Heat Pump Design, a compressor tonifying Qi branch road is comprised in its technology contents, compressor gas supplementing opening is caused by condensator outlet, and at compressor gas supplementing opening place setting pressure valve, when Compressor Discharge Pressure is seriously lower than design objective, directly send the residual steam after condenser back to compressor without evaporimeter, can normally work with compression machine under ensureing lower temperature.As the low temperature environment adaptability design generally applied, there is the shortcoming that Applicable temperature scope is less in this project organization, can not ensure the normal operation of compressor under the northern China easily low temperature environment of subzero less than 20 degrees Celsius in heat pump industry.
Summary of the invention:
A kind of tandem type two-stage thermal-arrest of the utility model heat pump goal of the invention: provide a kind of heat pump structure for northern China winter low temperature environmental applications to design, compressor still can be run well under pole cold air is waited.
A kind of tandem type two-stage thermal-arrest heat pump, comprises stage compressor, split-compressor, First Heat Exchanger, the second heat exchanger, the 3rd heat exchanger, one-level capillary and secondary capillary; Stage compressor, the second heat exchanger, one-level capillary and First Heat Exchanger are connected to form the first heat pump circuit in turn; Split-compressor, the 3rd heat exchanger, secondary capillary and the second heat exchanger are connected to form the second heat pump circuit in turn.Heat energy is enriched in the second heat exchanger after one-level heat pump circuit is concentrated, and continue to concentrate in secondary heat pump circuit, eventually to the 3rd heat exchanger heating, under ensureing low temperature environment by the tandem working in two-stage loop, secondary heat pump circuit has more high-quality thermal source to can be used for direct heating all the time.
Preferably, a stop valve is respectively installed at the 3rd heat exchanger two ends.
For ensureing that stage compressor cannot can not work because First Heat Exchanger steam is under-supply at low temperatures, the design also comprises the first heat pump circuit tonifying Qi branch road, this tonifying Qi branch road connects stage compressor suction, exhaust outlet, direct by part primary compressor air-discharging introducing compressor air suction mouth in the case of necessary, ensure that compressor normally works, damage compressor without the second heat exchanger to prevent condensed liquid working media from refluxing.
Preferably, magnetic valve, high-voltage switch gear and low tension switch is also comprised; Magnetic valve is arranged on tonifying Qi branch road, and high-voltage switch gear is arranged on stage compressor exhaust ports, and low tension switch is arranged on stage compressor air entry place.By monitoring the steam pressure of compressor two ends institute connecting line, automatically controlling the air compensation of tonifying Qi branch road, making compressor still can stable operation when environment temperature changes by a relatively large margin.
Preferably, also comprise one-level cross valve and secondary cross valve, wherein, one-level cross valve is arranged in the first heat pump circuit, and interface is inhaled with First Heat Exchanger, the second heat exchanger, stage compressor respectively, exhaust outlet is connected; Secondary cross valve is arranged in the second heat pump circuit, and interface is inhaled with the second heat exchanger, the 3rd heat exchanger, split-compressor respectively, exhaust outlet is connected; When being applied to the equipment such as air-conditioning, can be refrigeration cool-down pattern by heating patten transformation by cross valve reversal connection pipeline.
The design also can comprise thermal storage device, and the second heat exchanger is arranged in thermal storage device; Preferably, thermal storage device adopts attemperater.Energy storage in the daytime can be realized when day and night temperature is larger in conjunction with above-mentioned cross valve attemperater, night exoergic flow process, ensure to heat under low temperature, and water heater can be made realize hot water supply; Under refrigeration cool-down pattern, secondary heat pump circuit single mode operation or two-stage heat pump circuit working in double modes can be used, while to the 3rd heat exchanger radiating and cooling, pass through storage tank hot-water supply.
Preferably, above-mentioned one-level capillary and secondary capillary are electric expansion valve, and comprise filter, and filter has two, are arranged on electric expansion valve two ends respectively.
Also comprise two gas-liquid separators, be arranged on stage compressor and split-compressor air entry respectively.
Preferably, also comprise the second heat pump circuit tonifying Qi branch road, this tonifying Qi branch road connects split-compressor suction, exhaust outlet.
The beneficial effect of a kind of tandem type two-stage thermal-arrest of the utility model heat pump: by by two cover heat pump circuit serial connections, and increase the equipment such as energy-accumulating water tank, improves it greatly and maintains the ability that compressor normally runs at low temperatures, and extend function.
Accompanying drawing illustrates:
Fig. 1 is a kind of tandem type two-stage thermal-arrest of the utility model heat pump specific embodiment one structural representation;
Fig. 2 is a kind of tandem type two-stage thermal-arrest of the utility model heat pump specific embodiment two structural representation;
Fig. 3 is a kind of tandem type two-stage thermal-arrest of the utility model heat pump specific embodiment three structural representation;
In figure, stage compressor 1, split-compressor 2, gas-liquid separator 3, First Heat Exchanger 4, second heat exchanger 5, attemperater 6, the 3rd heat exchanger 7, one-level capillary 8, secondary capillary 9, first heat pump circuit tonifying Qi branch road 10, one-level cross valve 11, secondary cross valve 12, high-voltage switch gear 13, low tension switch 14.
Detailed description of the invention:
Specific embodiment one: a kind of tandem type two-stage thermal-arrest heat pump, comprises stage compressor 1, split-compressor 2, gas-liquid separator 3, First Heat Exchanger 4, second heat exchanger 5, attemperater 6, the 3rd heat exchanger 7, one-level capillary 8, secondary capillary 9 and the first heat pump circuit tonifying Qi branch road 10; Gas-liquid separator 3 has two, is arranged on stage compressor 1 air entry place and split-compressor 2 air entry place respectively; Stage compressor 1, second heat exchanger 5, one-level capillary 8 and First Heat Exchanger 4 are connected to form the first heat pump circuit in turn; Split-compressor 2, the 3rd heat exchanger 7, secondary capillary 9 and the second heat exchanger 5 are connected to form the second heat pump circuit in turn; First heat pump circuit tonifying Qi branch road 10 connects that stage compressor 1 is inhaled, exhaust outlet, tonifying Qi branch road is provided with magnetic valve, stage compressor 1 exhaust ports installation high-voltage switch 13, and low tension switch 14 is installed at stage compressor 1 air entry place; Second heat exchanger 5 is arranged on attemperater 6 li.
Also comprise one-level cross valve 11 and secondary cross valve 12, wherein, one-level cross valve 11 is arranged in the first heat pump circuit, and interface is inhaled with First Heat Exchanger 4, second heat exchanger 5, stage compressor 1 respectively, exhaust outlet is connected; Secondary cross valve 12 is arranged in the second heat pump circuit, and interface is inhaled with the second heat exchanger 5, the 3rd heat exchanger 7, split-compressor 2 respectively, exhaust outlet is connected.
One-level capillary 8 and secondary capillary 9 are electric expansion valve, and electric expansion valve two ends are respectively provided with filter.
Specific embodiment two: a kind of tandem type two-stage thermal-arrest heat pump, comprises stage compressor 1, split-compressor 2, gas-liquid separator 3, First Heat Exchanger 4, second heat exchanger 5, the 3rd heat exchanger 7, one-level capillary 8, secondary capillary 9 and the first heat pump circuit tonifying Qi branch road 10; Gas-liquid separator 3 has two, is arranged on stage compressor 1 air entry place and split-compressor 2 air entry place respectively; Stage compressor 1, second heat exchanger 5, one-level capillary 8 and First Heat Exchanger 4 are connected to form the first heat pump circuit in turn; Split-compressor 2, the 3rd heat exchanger 7, secondary capillary 9 and the second heat exchanger 5 are connected to form the second heat pump circuit in turn; First heat pump circuit tonifying Qi branch road 10 connects that stage compressor 1 is inhaled, exhaust outlet, tonifying Qi branch road is provided with magnetic valve, stage compressor 1 exhaust ports installation high-voltage switch 13, and low tension switch 14 is installed at stage compressor 1 air entry place.
Also comprise one-level cross valve 11, be arranged in the first heat pump circuit, interface is inhaled with First Heat Exchanger 4, second heat exchanger 5, stage compressor 1 respectively, exhaust outlet is connected.
One-level capillary 8 and secondary capillary 9 are electric expansion valve, and electric expansion valve two ends are respectively provided with filter.
Specific embodiment three: a kind of tandem type two-stage thermal-arrest heat pump, comprises stage compressor 1, split-compressor 2, gas-liquid separator 3, First Heat Exchanger 4, second heat exchanger 5, the 3rd heat exchanger 7, one-level capillary 8, secondary capillary 9, first heat pump circuit tonifying Qi branch road 10 and the second heat pump circuit tonifying Qi branch road 15; Gas-liquid separator 3 has two, is arranged on stage compressor 1 air entry place and split-compressor 2 air entry place respectively; Stage compressor 1, second heat exchanger 5, one-level capillary 8 and First Heat Exchanger 4 are connected to form the first heat pump circuit in turn; Split-compressor 2, the 3rd heat exchanger 7, secondary capillary 9 and the second heat exchanger 5 are connected to form the second heat pump circuit in turn; First heat pump circuit tonifying Qi branch road 10 connects that stage compressor 1 is inhaled, exhaust outlet, second heat pump circuit tonifying Qi branch road 15 connects that split-compressor 2 is inhaled, exhaust outlet, tonifying Qi branch road is provided with magnetic valve, stage compressor 1 and split-compressor 2 exhaust ports installation high-voltage switch 13, low tension switch 14 is installed at stage compressor 1 and split-compressor 2 air entry place.
Also comprise one-level cross valve 11 and secondary cross valve 12, wherein, one-level cross valve 11 is arranged in the first heat pump circuit, and interface is inhaled with First Heat Exchanger 4, second heat exchanger 5, stage compressor 1 respectively, exhaust outlet is connected; Secondary cross valve 12 is arranged in the second heat pump circuit, and interface is inhaled with the second heat exchanger 5, the 3rd heat exchanger 7, split-compressor 2 respectively, exhaust outlet is connected.
One-level capillary 8 and secondary capillary 9 are electric expansion valve.
Claims (10)
1. a tandem type two-stage thermal-arrest heat pump, is characterized in that: comprise stage compressor, split-compressor, First Heat Exchanger, the second heat exchanger, the 3rd heat exchanger, one-level capillary and secondary capillary; Stage compressor, the second heat exchanger, one-level capillary and First Heat Exchanger are connected to form the first heat pump circuit in turn; Split-compressor, the 3rd heat exchanger, secondary capillary and the second heat exchanger are connected to form the second heat pump circuit in turn.
2. a kind of tandem type two-stage thermal-arrest heat pump as claimed in claim 1, is characterized in that: also comprise the first heat pump circuit tonifying Qi branch road, and this tonifying Qi branch road connects stage compressor suction, exhaust outlet.
3. a kind of tandem type two-stage thermal-arrest heat pump as claimed in claim 2, is characterized in that: also comprise magnetic valve, high-voltage switch gear and low tension switch; Magnetic valve is arranged on tonifying Qi branch road, and high-voltage switch gear is arranged on stage compressor exhaust ports, and low tension switch is arranged on stage compressor air entry place.
4. a kind of tandem type two-stage thermal-arrest heat pump as claimed in claim 1, it is characterized in that: also comprise one-level cross valve and secondary cross valve, wherein, one-level cross valve is arranged in the first heat pump circuit, and interface is inhaled with First Heat Exchanger, the second heat exchanger, stage compressor respectively, exhaust outlet is connected; Secondary cross valve is arranged in the second heat pump circuit, and interface is inhaled with the second heat exchanger, the 3rd heat exchanger, split-compressor respectively, exhaust outlet is connected.
5. a kind of tandem type two-stage thermal-arrest heat pump as claimed in claim 1, is characterized in that: described one-level capillary and secondary capillary are electric expansion valve.
6. a kind of tandem type two-stage thermal-arrest heat pump as claimed in claim 5, it is characterized in that: also comprise filter, filter has two, is arranged on electric expansion valve two ends respectively.
7. a kind of tandem type two-stage thermal-arrest heat pump as described in any one of claim 1-6, it is characterized in that: also comprise thermal storage device, the second heat exchanger is arranged in thermal storage device.
8. a kind of tandem type two-stage thermal-arrest heat pump as claimed in claim 7, is characterized in that: described thermal storage device is attemperater.
9. a kind of tandem type two-stage thermal-arrest heat pump as claimed in claim 7, is characterized in that: also comprise two gas-liquid separators, is arranged on stage compressor and split-compressor air entry respectively.
10. a kind of tandem type two-stage thermal-arrest heat pump as claimed in claim 2, is characterized in that: also comprise the second heat pump circuit tonifying Qi branch road, and this tonifying Qi branch road connects split-compressor suction, exhaust outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521097077.1U CN205227930U (en) | 2015-12-25 | 2015-12-25 | Serial -type two -stage thermal -arrest heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521097077.1U CN205227930U (en) | 2015-12-25 | 2015-12-25 | Serial -type two -stage thermal -arrest heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205227930U true CN205227930U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521097077.1U Expired - Fee Related CN205227930U (en) | 2015-12-25 | 2015-12-25 | Serial -type two -stage thermal -arrest heat pump |
Country Status (1)
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| CN (1) | CN205227930U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466079A (en) * | 2015-12-25 | 2016-04-06 | 宁夏塞上阳光太阳能有限公司 | Serial-connection type two-stage heat collection heat pump |
-
2015
- 2015-12-25 CN CN201521097077.1U patent/CN205227930U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466079A (en) * | 2015-12-25 | 2016-04-06 | 宁夏塞上阳光太阳能有限公司 | Serial-connection type two-stage heat collection heat pump |
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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: 20160511 Termination date: 20161225 |