CN203501528U - Direct-expansion type ground-source heat pump air conditioner cold and hot water unit - Google Patents
Direct-expansion type ground-source heat pump air conditioner cold and hot water unit Download PDFInfo
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- CN203501528U CN203501528U CN201320625382.8U CN201320625382U CN203501528U CN 203501528 U CN203501528 U CN 203501528U CN 201320625382 U CN201320625382 U CN 201320625382U CN 203501528 U CN203501528 U CN 203501528U
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Abstract
Provided is a direct-expansion type ground-source heat pump air conditioner cold and hot water unit. Coolants discharged from a compressor (1) return to the compressor to form a refrigerating loop, wherein the coolants pass through an oil separator (2), a four-way reversing valve (3), a third electromagnetic valve (14), a summer heat-exchange buried pipe (10), a first drying filter (8), a first thermal expansion valve (6), a first electromagnetic valve (15), an air conditioner side heat exchanger (4), the four-way reversing valve (3) and a gas-liquid separator (5). Coolants discharged from the compressor return to the compressor to form a heating loop, wherein the coolants pass through the oil separator, the four-way reversing valve, the air conditioner side heat exchanger, a second electromagnetic valve (13), a second drying filter (9), a second thermal expansion valve (7), a winter heat-exchange buried pipe (11), a fourth electromagnetic valve (12), the four-way reversing valve and the gas-liquid separator. The direct-expansion type ground-source heat pump air conditioner cold and hot water unit is reliable in structure design, switching of different underground heat exchangers can be achieved through opening and closing of the four-way valves and corresponding electromagnetic valves, system efficient work can be guaranteed, and the energy efficiency ratio of a ground-source heat pump is improved.
Description
Technical field
The utility model belongs to air-conditioning technical field, relates generally to the direct-expansion-type soil source heat pump air conditioner hot and cold water unit that a kind of energy meets air-conditioning demand under the different operating modes that heat, freeze.
Background technology
Along with the development of Urbanization in China, the energy-conservation of heating ventilation air-conditioning system and equipment is more and more social cognition and showing great attention to.According to statistics, building energy consumption accounts for 28% of social total energy consumption, constructing operation energy consumption is about 80% of its life cycle management energy consumption, northern area heating energy consumption accounts for 36% of building total energy consumption, there are annual summer a lot of big cities to be in an emergency because of resident's air conditioning electricity electric power, therefore, the heating ventilation air-conditioning system in architectural engineering and equipment affect huge in construction field energy-saving and emission-reduction.Heat pump techniques is one and effectively utilizes low-grade heat source, improve the power-saving technology of efficiency of energy utilization, be subject to people's common concern and be widely applied, according to the difference of heat-obtaining medium, heat pump can be divided into air source heat pump, groundwater heat pump, surface water source heat pump and soil source heat pump etc.Soil source heat pump is imbedded heat exchanger underground, and summer, winter was from soil draw heat to soil discharges heat, because the temperature of soil is less with the fluctuation of Changes in weather, and the temperature of air is very large with the fluctuation of Changes in weather, so the efficiency of soil source heat pump is better than air source heat pump; Groundwater heat pump efficiency is higher than soil source heat pump, but is subject to the constraint that groundwater resources are used, and the exhaustive exploitation use of underground water can bring a series of problem, and therefore application is restricted; Surface water source heat pump is subject to the impact of regional condition very large, must have operational earth surface water source at engineering project periphery, applies also not extensively, is emphasizing that the society of energy-saving and emission-reduction, soil source heat pump are subject to increasing attention.
Now widely used soil source heat pump system is to realize exchange heat by intermediate medium (as water or added the aqueous solution of anti-icing fluid).Under the effect of water pump, intermediate medium is flowed through and is embedded in underground heat exchanger, carries out heat exchange with soil, draws or emit heat to soil from soil, then intermediate medium carries out heat exchange by the heat exchanger in source pump and cold-producing medium again, realizes and heating or kind of refrigeration cycle.Owing to there being intermediate medium, heat is not directly between soil and cold-producing medium, to exchange but pass to intermediate medium by soil to pass to cold-producing medium again, and for carrying intermediate medium to provide power by water pump, has water pump wasted work, therefore, whole system efficiency is not high.
Summary of the invention
The utility model causes the feature that efficiency is not high because intermediate medium exists for existing soil source heat pump air conditioner hot and cold water unit, a kind of direct-expansion-type soil source heat pump air conditioner hot and cold water unit is provided, not only improved the Energy Efficiency Ratio of system, can also, according to the heat exchange amount of the different adjustment ground heat exchanger in summer in winter, meet annual air-conditioning instructions for use.
For achieving the above object, the technical solution adopted in the utility model is:
A direct-expansion-type soil source heat pump air conditioner hot and cold water unit, the cold-producing medium that compressor is discharged returns to compressor through oil eliminator, four-way change-over valve, the 3rd magnetic valve, summer with heat exchange pipe laying, the first device for drying and filtering, the first heating power expansion valve, the first magnetic valve, air-conditioning side heat exchanger, four-way change-over valve, gas-liquid separator and forms refrigerating circuit; The cold-producing medium that compressor is discharged returns to compressor formation through oil eliminator, four-way change-over valve, air-conditioning side heat exchanger, the second magnetic valve, the second device for drying and filtering, the second heating power expansion valve, winter with heat exchange pipe laying, the 4th magnetic valve, four-way change-over valve, gas-liquid separator and heats loop.
In above-mentioned, summer is with heat exchange pipe laying and winter adopting stainless steel tube or ambrose alloy pipe to make with heat exchange pipe laying.
The utility model does not adopt intermediate medium, by metal tube, is that summer is underground with directly imbedding with heat exchange pipe laying in heat exchange pipe laying and winter, allows cold-producing medium directly by metal pipe-wall and soil, carry out heat exchange.Owing to having saved middle heat exchange loop and water pump wasted work in system, the efficiency of system improves, and corresponding underground heat exchange length of tube also reduces, and the area of required pipe laying reduces, and drilling depth reduces, and operating expenses also reduces.Due to metal tube, directly imbed undergroundly, corrosion and leakage problem must be considered well, the corrosion-resistant metal materials such as buried heat exchanger tube employing stainless steel tube or ambrose alloy pipe.Because metallic heat exchanging tube is directly imbedded underground, refrigerant line is longer, lubricating oil likely stockpiles and in underground pipe, is difficult for getting back in compressor, in the design, at compressor outlet, be provided with efficient oil eliminator, most of lubricating oil is separated after discharging compressor, to solve the oil return problem of long pipe runs refrigeration system.Owing to heating the load condition difference of refrigeration summer in winter, underground pipe need to have different heat exchange areas while using as evaporimeter or condenser, consider in Practical Project and almost cannot overhaul or change for buried heat exchanger tube, in underground buried tube, install the adjusting measures such as bypath valve infeasible, the design has adopted the different metal pipe laying of two covers has been set summer in winter, by the heat exchange of air conditioner load and unit is calculated to design, make the length of two cover pipe layings and the requirement that external diameter meets respectively winter summer condition, guarantee the stable and high effective operation of system.Because summer in winter load difference is large, so refrigerant flow difference is also larger, realizes the control of flow by the control of two different heating power expansion valves and respective electrical magnet valve.
The utility model structural design is reliable, cold-producing medium and soil direct heat transfer efficiency are high, can, according to the difference of refrigeration and heating condition, realize the switching of different ground heat exchangers by the switching of cross valve and respective electrical magnet valve, can guarantee system high efficiency work, improve the Energy Efficiency Ratio of soil source heat pump.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present utility model.
The specific embodiment
With reference to Fig. 1, a kind of direct-expansion-type soil source heat pump air conditioner hot and cold water unit that the utility model provides, the cold-producing medium that compressor 1 is discharged returns to compressor 1 through oil eliminator 2, four-way change-over valve 3, the 3rd magnetic valve 14, summer with heat exchange pipe laying 10, the first device for drying and filtering 8, the first heating power expansion valve 6, the first magnetic valve 15, air-conditioning side heat exchanger 4, four-way change-over valve 3, gas-liquid separator 5 and forms refrigerating circuit; The cold-producing medium that compressor 1 is discharged returns to compressor 1 formation through oil eliminator 2, four-way change-over valve 3, air-conditioning side heat exchanger 4, the second magnetic valve 13, the second device for drying and filtering 9, the second heating power expansion valve 7, winter with heat exchange pipe laying 11, the 4th magnetic valve 12, four-way change-over valve 3, gas-liquid separator 5 and heats loop.
Wherein, summer is with heat exchange pipe laying 10 and winter adopting stainless steel tube to make with heat exchange pipe laying 11, and summer is with heat exchange pipe laying 10 and winter being U-shaped with heat exchange pipe laying 11, and air-conditioning side heat exchanger 4 can adopt the various ways such as plate type heat exchanger, shell and tube exchanger, water tank type heat exchanger, compressor 1 adopts frequency-changeable compressor.
When refrigeration mode in summer, when unit is produced air conditioner cold water, the first magnetic valve 15 and the 3rd magnetic valve 14 are opened, the second magnetic valve 13 and the 4th magnetic valve 18 are closed, in four-way change-over valve, first interface 31 and the second interface 32 are communicated with, the 3rd interface 33 and the 4th interface 34 are communicated with, the exhaust of compressor 1 enters the high temperature and high pressure gaseous refrigerant of isolating lubricating oil buried summer with in heat exchange pipe laying 10 by four-way change-over valve 3 and the 3rd magnetic valve 14 through oil eliminator 2, now, the condenser that be refrigeration system with heat exchange pipe laying 10 summer, the condensation heat of gaseous refrigerant is passed to soil, gaseous refrigerant is condensed into liquid refrigerant, after the first device for drying and filtering 8, enter reducing pressure by regulating flow in the first heating power expansion valve 6, low-pressure, liquid refrigerant after step-down enters air-conditioning side heat exchanger 4 after by the first magnetic valve 15, now, the evaporimeter that air-conditioning side heat exchanger is refrigeration system, cold-producing medium and air-conditioning backwater carry out heat exchange, draw the heat in air-conditioning backwater, after air-conditioning backwater releases heat, temperature reduces, air conditioning water is sent through feed pipe, for air conditioner end equipment cooling.In air-conditioning side heat exchanger, liquid refrigerant gasification is for after low-pressure gaseous refrigerant, through four-way change-over valve 3 gas-liquid separator 5 of flowing through, by compressor, sucked, and starts after compression next cyclic process.
When winter heating's pattern, when unit is produced air conditioning hot, the first magnetic valve 15 and the 3rd magnetic valve 14 are closed, the second magnetic valve 13 and the 4th magnetic valve 12 are opened, in four-way change-over valve, the second interface 32 and the 3rd interface 33 are communicated with, first interface 31 and the 4th interface 34 are communicated with, the exhaust of compressor 1 enters air-conditioning side heat exchanger 4 by the high temperature and high pressure gaseous refrigerant of isolating lubricating oil by four-way change-over valve 3 through oil eliminator 2, the condenser that now air-conditioning side heat exchanger is refrigeration system, cold-producing medium and air-conditioning backwater carry out heat exchange, gaseous refrigerant discharges condensation heat and becomes high pressure liquid refrigerant, after the condenser heat that air-conditioning backwater absorption refrigeration agent discharges, temperature raises, air conditioning hot is sent through feed pipe, for air conditioner end equipment heat supply.High pressure liquid refrigerant after the heat exchange of air-conditioning side heat exchanger is by the second magnetic valve 13, after the second device for drying and filtering 9, enter reducing pressure by regulating flow in the second heating power expansion valve 7, low-pressure, liquid refrigerant after step-down enters buried winter and uses heat exchange pipe laying 11, the evaporimeter that now metal heat-exchange pipe laying is refrigeration system, cold-producing medium carries out heat exchange by tube wall and the soil of metal heat-exchange pipe laying, draw the heat in soil, make liquid refrigerant gasification for low-pressure gaseous refrigerant, after flowing through the 4th magnetic valve 12, enter four-way change-over valve 3, then through gas-liquid separator 5, by compressor 1, sucked, start after compression next cyclic process.
This soil source heat pump type air conditioner cold and hot water unit is directly imbedded underground by refrigerant line, water heat exchange link and water pump consumption have been reduced, improved efficiency of energy utilization, according to winter summer condition difference, be provided with respectively two groups of different underground buried tubes, although two groups of pipe layings are set, initial cost is increased, but the Performance Match problem that can solve well underground buried tube and air conditioner cold and hot water unit miscellaneous part, unit operation Energy Efficiency Ratio is improved, and has good economy.
The utility model is not limited to above-mentioned embodiment, and anyone can draw other forms of product under enlightenment of the present utility model.Though but in its shape or structure, do any variation, every technical scheme identical or close with the utility model, all within protection domain.
Claims (3)
1. a direct-expansion-type soil source heat pump air conditioner hot and cold water unit, it is characterized in that, the cold-producing medium that compressor (1) is discharged returns to compressor (1) through oil eliminator (2), four-way change-over valve (3), the 3rd magnetic valve (14), summer with heat exchange pipe laying (10), the first device for drying and filtering (8), the first heating power expansion valve (6), the first magnetic valve (15), air-conditioning side heat exchanger (4), four-way change-over valve (3), gas-liquid separator (5) and forms refrigerating circuit; The cold-producing medium that compressor (1) is discharged returns to compressor (1) formation through oil eliminator (2), four-way change-over valve (3), air-conditioning side heat exchanger (4), the second magnetic valve (13), the second device for drying and filtering (9), the second heating power expansion valve (7), winter with heat exchange pipe laying (11), the 4th magnetic valve (12), four-way change-over valve (3), gas-liquid separator (5) and heats loop.
2. a kind of direct-expansion-type soil source heat pump air conditioner hot and cold water unit according to claim 1, is characterized in that, summer is with heat exchange pipe laying (10) and winter adopting stainless steel tube or ambrose alloy pipe to make with heat exchange pipe laying (11).
3. a kind of direct-expansion-type soil source heat pump air conditioner hot and cold water unit according to claim 1 and 2, is characterized in that, summer is with heat exchange pipe laying (10) and winter being U-shaped with heat exchange pipe laying (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320625382.8U CN203501528U (en) | 2013-10-11 | 2013-10-11 | Direct-expansion type ground-source heat pump air conditioner cold and hot water unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320625382.8U CN203501528U (en) | 2013-10-11 | 2013-10-11 | Direct-expansion type ground-source heat pump air conditioner cold and hot water unit |
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| CN203501528U true CN203501528U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320625382.8U Expired - Fee Related CN203501528U (en) | 2013-10-11 | 2013-10-11 | Direct-expansion type ground-source heat pump air conditioner cold and hot water unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765786A (en) * | 2017-01-19 | 2017-05-31 | 湖北华工能源股份有限公司 | A kind of family expenses geo-source heat-pump air conditioner group for using underground water as Cooling and Heat Source |
| CN107101412A (en) * | 2017-06-02 | 2017-08-29 | 山东中瑞新能源科技有限公司 | A kind of sewage as direct Cooling and Heat Source source pump |
| RU2738527C1 (en) * | 2020-01-10 | 2020-12-14 | Михаил Николаевич Чванов | Heat pump system for heating and cooling of rooms |
-
2013
- 2013-10-11 CN CN201320625382.8U patent/CN203501528U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765786A (en) * | 2017-01-19 | 2017-05-31 | 湖北华工能源股份有限公司 | A kind of family expenses geo-source heat-pump air conditioner group for using underground water as Cooling and Heat Source |
| CN107101412A (en) * | 2017-06-02 | 2017-08-29 | 山东中瑞新能源科技有限公司 | A kind of sewage as direct Cooling and Heat Source source pump |
| CN107101412B (en) * | 2017-06-02 | 2023-06-13 | 山东中瑞新能源科技有限公司 | Heat pump unit with sewage as direct cold and heat source |
| RU2738527C1 (en) * | 2020-01-10 | 2020-12-14 | Михаил Николаевич Чванов | Heat pump system for heating and cooling of rooms |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20141011 |
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| EXPY | Termination of patent right or utility model |