CN207674552U - Two-stage Compression Heating by Ground Source Heat Pump system - Google Patents
Two-stage Compression Heating by Ground Source Heat Pump system Download PDFInfo
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- CN207674552U CN207674552U CN201721550856.1U CN201721550856U CN207674552U CN 207674552 U CN207674552 U CN 207674552U CN 201721550856 U CN201721550856 U CN 201721550856U CN 207674552 U CN207674552 U CN 207674552U
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- heat
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- pump system
- stage compression
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
Abstract
A kind of Two-stage Compression Heating by Ground Source Heat Pump system, includes indoor heat-exchanging component and outdoor heat exchange component, and outdoor heat exchange component includes condenser coil, heat-exchanging water tank, charge air cooler, underground pipe, low pressure compressor and high pressure compressor；Condenser coil is set in heat-exchanging water tank, and heat exchanger tube is connect with heat-exchanging water tank；Low pressure compressor is connect by the 4th pipeline with high pressure compressor, and the other end of high pressure compressor and condenser coil connects and formed refrigerant circulation loop, and saturated gas outlet passes through the 5th pipeline and the 4th pipeline connection.By said structure design, in Two-stage Compression Heating by Ground Source Heat Pump system provided by the utility model, the utility model can solve the problems, such as that compressor pressure ratios are excessive under worst cold case by double-stage compressor structure design.And it is provided with the branch output that charge air cooler realizes refrigerant, the charge air cooler cycle of such two-bed system can increase the working medium mass flow of hiigh pressure stage, to increase system heating capacity.
Description
Technical field
The utility model is related to heating system technical fields, more specifically, more particularly to a kind of Two-stage Compression ground source heat
Pump heating system.
Background technology
Earth source heat pump is that the land shallow-layer energy is realized by inputting a small amount of high-grade energy (such as electric energy) by low-grade heat
Three parts can mainly be divided to the device of high-grade heat energy transfer, Analysis of Ground Source Heat Pump system：Outdoor ground source heat-exchange system,
Source heat pump main frame system and indoor end system, in above three composition system, outdoor ground source heat-exchange system is used for absorbent earth
Then earth thermal energy passes through ground-source heat pump host system and realizes transfer of the low grade heat energy to high-grade thermal energy, then thermal energy passes through
Indoor end system, which is input in room, realizes that indoor temperature is adjusted.
Earth source heat pump have many advantages, such as compared with other heating modes it is efficient, easy to use, do not pollute, therefore, ground
Source heat pump hot-water system has obtained preferable popularization and application in the North of Yangtze River area in China.
Although ground source heat pump hot water system has many advantages, such as, under cryogenic, common ground source heat pump hot water system
The operation of system still will appear some problems, and especially its runnability can largely be influenced, these problems are main
Show the following aspects：
1, as the increase soil moisture of latitude reduces, commonly the evaporating temperature of source heat pump hot-water system reduces (evaporation
Temperature refers to the gas temperature of compressor suction inlet, also referred to as suction temperature.Refrigerant is in evaporator due to the soil moisture
It is too low so that heat absorption efficiency declines, and causes refrigerant that cannot fully evaporate, and just will produce that suction temperature is too low to ask
Topic), in the case where condensation temperature (or condensing pressure) is constant, the compression ratio of compressor just will increase, and it is possible that super
Going out the critical value of ordinary single-stage compressibility normal operation, (according to data, positive displacement compressor compression ratio is generally 3~5, ammonia system
The problem of cooling system not more than 8,10) freon system is no more than, the compression efficiency of compressor is resulted in reduce in this way；
2, when common earth source heat pump works at low ambient temperatures, (outdoor environment temperature is low, heat absorption for the reduction of system evaporating temperature
Measure small), compressor air suction increases than volume, gas transmission coefficient reduces, and will result in the problem of system heating capacity is reduced, thus can
Lead to the decline of system coefficient of performance in heating and the reduction of ground source heat pump hot water system economy.
In the prior art, common single stage compress Heating by Ground Source Heat Pump system supplies usually when the soil moisture is less than 5 DEG C
Heating system is just unable to reach good heating effect, main reason is that：The soil moisture is also therewith when the temperature of the surroundings is low
Relatively low, system evaporating temperature reduces, and the inspiratory volume of compressor increases, and the theoretical displacement of compressor is constant, therefore compresses
The compression ratio of machine just will increase, and the heating capacity of system is reduced therewith, if increasing compression ratio, when outdoor temperature raising, then may be used
It can cause excessive discharge temperature and reduce service life of compressor.
Utility model content
The purpose of this utility model is to provide it is a kind of being capable of reliable for operation, Heating by Ground Source Heat Pump system that calorific value is secure
System.
To achieve the goals above, the utility model provides the following technical solutions：
A kind of Two-stage Compression Heating by Ground Source Heat Pump system, includes indoor heat-exchanging component and outdoor heat exchange component, described
Indoor heat-exchanging component includes heat exchanger tube and grounding heat coil tube, and the heat exchanger tube connect and is formed with the grounding heat coil tube and is used for
The indoor heat exchange cycle circuit of floor heating hot water circuit circulation, it is described in being provided with circulating pump on the indoor heat exchange cycle circuit
Outdoor heat exchange component includes condenser coil, heat-exchanging water tank, charge air cooler, underground pipe, low pressure compressor and high pressure compressor；
The condenser coil is set in the heat-exchanging water tank, and the heat exchanger tube is connect with the heat-exchanging water tank, in described
Water is mounted in heat-exchanging water tank；
The charge air cooler includes intercooler inlet, saturated gas outlet and saturated liquid outlet, the condenser coil
One end connect with the intercooler inlet by the first pipeline, the underground pipe is gone out by the second pipeline and the saturated liquid
Mouth connection, the underground pipe are connect by third pipeline with the low pressure compressor, and the low pressure compressor passes through the 4th pipeline
It is connect with the high pressure compressor, the high pressure compressor connect with the other end of the condenser coil and forms refrigerant and follows
Loop back path, the saturated gas outlet pass through the 5th pipeline and the 4th pipeline connection.
Preferably, in being provided with filter on first pipeline.
Preferably, in being provided with the first expansion valve on first pipeline.
Preferably, in being provided with the second expansion valve on second pipeline.
Preferably, the condenser coil is helical coiled tube structure.
Preferably, the underground pipe includes buried coil pipe unit, and the buried coil pipe unit includes multiple, whole institute
It states in parallel between buried coil pipe unit.
Pass through said structure design, in Two-stage Compression Heating by Ground Source Heat Pump system provided by the utility model, this practicality
It is novel by double-stage compressor structure design, can solve the problems, such as that compressor pressure ratios are excessive under worst cold case.And it provides
There is charge air cooler to realize that the branch output of refrigerant, the charge air cooler cycle of such two-bed system can increase the working medium quality of hiigh pressure stage
Flow, to increase system heating capacity.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality
Novel illustrative embodiments and their description are not constituted improper limits to the present invention for explaining the utility model.
Wherein：
Fig. 1 is the structural schematic diagram of Two-stage Compression Heating by Ground Source Heat Pump system in one embodiment of the utility model.
Reference sign：
Heat exchanger tube 1, grounding heat coil tube 2, circulating pump 3, condenser coil 4, heat-exchanging water tank 5, charge air cooler 6, underground pipe 7, low pressure pressure
Contracting machine 8, high pressure compressor 9, filter 10, the first expansion valve 11, the second expansion valve 12.
Specific implementation mode
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.Each example passes through the utility model
The mode of explanation provide and unrestricted the utility model.In fact, those skilled in the art will be clear that, this reality is not being departed from
In the case of with novel range or spirit, it can modify in the present invention and modification.For example, being illustrated or described as one
The feature of a part for a embodiment can be used for another embodiment, to generate another embodiment.Thus, it may be desirable to
The utility model includes the such modifications and variations being included into the range of the following claims and their equivalents.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of description the utility model rather than requires the utility model must be with specific azimuth configuration and operation, therefore
It should not be understood as limiting the present invention.The term " connected " that is used in the utility model, " connection " shall be understood in a broad sense,
For example, it may be being fixedly connected, may be a detachable connection；It can be directly connected, it can also be indirect by intermediate member
It is connected；It can be wired electrical connection, radio connection, can also be wireless communication signals connection, for the common skill of this field
For art personnel, the concrete meaning of above-mentioned term can be understood as the case may be.In addition, what term " upstream " and " downstream " referred to
It is relative position of the component in fluid passage.For example, if fluid flows to component B from component A, component A is upper component B's
Trip.On the contrary, if component B receives the fluid stream from component A, component B is in the downstream of component A.
Referring to FIG. 1, Fig. 1 is the structural representation of Two-stage Compression Heating by Ground Source Heat Pump system in one embodiment of the utility model
Figure.
The utility model provides a kind of Two-stage Compression Heating by Ground Source Heat Pump system, for realizing geothermal heating.
In an embodiment of the utility model, which includes indoor heat exchange
Component and outdoor heat exchange component, wherein outdoor heat exchange component for realizing ground source heat can absorption, indoor heat-exchanging component then leads to
Crossing heat exchange action can be discharged into the ground source heat that outdoor heat exchange component absorbs in house.
Specifically, indoor heat-exchanging component includes heat exchanger tube 1 and grounding heat coil tube 2, and heat exchanger tube 1 is connect with grounding heat coil tube 2
And it is formed with the indoor heat exchange cycle circuit circulated for floor heating hot water circuit, in being provided with cycle on indoor heat exchange cycle circuit
Pump 3, indoor heat exchange cycle loop inner circulation have heat transferring medium, and providing power by circulating pump 3 makes indoor heat exchange cycle circuit
Interior heat transferring medium flowing.
Specifically, outdoor heat exchange component includes condenser coil 4, heat-exchanging water tank 5, charge air cooler 6, underground pipe 7, low pressure compression
Machine 8 and high pressure compressor 9.In the circulation loop that outdoor heat exchange component is constituted, the fluid media (medium) of circulation is refrigerant.
In the present invention, condenser coil 4 act as release thermal energy, therefore, condenser coil 4 also use heat conductivility
Excellent metal pipe material, to use copper pipe as optimization design scheme.
Condenser coil 4 is set in heat-exchanging water tank 5, and the setting of heat exchanger tube 1 is connect with heat-exchanging water tank 5, built-in in heat-exchanging water tank 5
It is loaded with water, condenser coil 4 carries out heat temperature raising by the water that heat exchange action is exchanged in boiler 5.In order to reduce heat energy loss,
Heat-exchanging water tank 5 is designed as the double-deck heat-exchanging water tank by the utility model, also, the outside of heat-exchanging water tank 5 is provided with insulating layer.
The concrete structure of charge air cooler 6 is：Include that intercooler inlet, saturated gas outlet and saturated liquid export,
Inside charge air cooler 6：Refrigerant has two output branches, wherein one exports branch for saturated gas, another is saturated solution
Body exports branch.
One end of condenser coil 4 is connect by the first pipeline with intercooler inlet, and underground pipe 7 passes through the second pipeline and saturation
Liquid outlet connects, and underground pipe 7 is connect by third pipeline with low pressure compressor 8, and low pressure compressor 8 passes through the 4th pipeline and height
Compressor 9 is pressed to connect, saturated gas outlet passes through the 5th pipeline and the 4th pipeline connection, high pressure compressor 9 and condenser coil 4
The other end connects.
In said structure design, underground pipe 7 can be realized as by underground pipe 7 in this way for being embedded into below ground
The absorption of ground source heat energy.
The problem of causing the utility model that can not run in order to avoid the damage of underground pipe 7, the utility model is to underground pipe 7
Following structure optimization is carried out：Underground pipe 7 includes buried coil pipe unit, and buried coil pipe unit includes multiple, and whole is buried
It is in parallel between coil pipe unit.In said structure design, the utility model is provided with multiple buried coil pipe units, and whole
It is in parallel between buried coil pipe unit, in this way, if it (includes multiple damages certainly to occur a damage in buried coil pipe unit
Situation), other buried coil pipe units still are able to work on, and ensure the stabilization of Two-stage Compression Heating by Ground Source Heat Pump system operation
Property and reliability.
It limits herein：The pressure of high pressure compressor 9 is superior to the pressure rank of low pressure compressor 8.It limits herein：Compression
The pressure of machine follows formula tm=0.4tk+0.6t0+ 3, wherein tmFor intermediate pressure, tkFor hiigh pressure stage condensing pressure, t0For low pressure
Grade condensing pressure.
Based on the composition of above-mentioned pipe-line system, the utility model is provided with filter 10 on the first pipeline；In the first pipe
Road is provided with the first expansion valve 11；The second expansion valve 12 is provided on the second pipeline.
In Two-stage Compression Heating by Ground Source Heat Pump system provided by the utility model, workflow is：By condenser coil 4
The refrigerant of output divides by charge air cooler 6 for two-way, wherein being refrigerant saturated liquid all the way, another way is refrigerant saturated air
Body；Refrigerant saturated liquid enters the heat absorption of underground pipe 7, and the low-pressure low-temperature refrigerant exported from underground pipe 7 enters low pressure compression
Machine 8；It exports after increasing temperature and pressure process, and is mixed with the refrigerant saturated gas come out from charge air cooler 6, into high pressure compressed
Machine 9 enters the condenser coil in heat-exchanging water tank 5 after high pressure compressed process reaches the pressure high temperature hot gas of production hot water demand
In 4, condensed supercooling refrigerant liquid enters the first expansion valve 11, enters charge air cooler 6 after throttling later, by charge air cooler
By the second expansion valve 12 after 6 outputs, the heat absorption evaporation of underground pipe 7 is entered after throttling process, it is compressed to be again introduced into low-pressure stage
Journey completes entire heating operations.
When environment temperature is down to 0 DEG C hereinafter, when evaporating temperature is too low, compressor pressure ratios increase causes delivery temperature mistake
Height is more than the working range that compressor allows, causes high frequent start and stop, system can not work normally, can cause when serious
Compressor is burnt.
Pass through said structure design, in Two-stage Compression Heating by Ground Source Heat Pump system provided by the utility model, this practicality
It is novel by double-stage compressor structure design, can solve the problems, such as that compressor pressure ratios are excessive under worst cold case.And it provides
There is charge air cooler 6 to realize that the branch output of refrigerant, the charge air cooler 6 of such two-bed system recycle the working medium matter that can increase hiigh pressure stage
Flow (in the unit interval, working medium flows through the quality of cross section) is measured, to increase system heating capacity.
Two-stage Compression ground source heat pump hot water system provided by the utility model is mainly used in North of North China, northeast, northwest
The heat supply in winter of cold districts determines that condensation temperature is certain (i.e. heating temperature is certain) according to the demand of heating,
With the reduction of evaporating temperature, medium temperature also should be reduced accordingly, and medium temperature is equivalent to the evaporation of high pressure stage compressor
The condensation temperature of temperature and low-pressure stage compressor.
Specifically, condenser coil 4 is helical coiled tube structure.Condenser coil 4 and water in heat-exchanging water tank 5 can be increased in this way
Contact area, improve 4 thermal energy of condenser coil release efficiency.
The preferred embodiment that these are only the utility model, is not intended to limit the utility model, for the skill of this field
For art personnel, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model, made
Any modification, equivalent substitution, improvement and etc., should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of Two-stage Compression Heating by Ground Source Heat Pump system includes indoor heat-exchanging component and outdoor heat exchange component, the room
Interior heat-exchanging component includes that heat exchanger tube (1) and grounding heat coil tube (2), the heat exchanger tube connect and are formed with the grounding heat coil tube
For the indoor heat exchange cycle circuit of floor heating hot water circuit circulation, in being provided with circulating pump on the indoor heat exchange cycle circuit
(3), which is characterized in that
The outdoor heat exchange component includes condenser coil (4), heat-exchanging water tank (5), charge air cooler (6), underground pipe (7), low pressure pressure
Contracting machine (8) and high pressure compressor (9)；
The condenser coil is set in the heat-exchanging water tank, and the heat exchanger tube is connect with the heat-exchanging water tank, in the heat exchange
Water is mounted in water tank；
The charge air cooler includes that intercooler inlet, saturated gas outlet and saturated liquid export, and the one of the condenser coil
End is connect by the first pipeline with the intercooler inlet, and the underground pipe is connected by the second pipeline and saturated liquid outlet
It connects, the underground pipe is connect by third pipeline with the low pressure compressor, and the low pressure compressor passes through the 4th pipeline and institute
High pressure compressor connection is stated, the high pressure compressor connect with the other end of the condenser coil and forms refrigerant circulation and returns
Road, the saturated gas outlet pass through the 5th pipeline and the 4th pipeline connection.
2. Two-stage Compression Heating by Ground Source Heat Pump system according to claim 1, which is characterized in that
In being provided with filter (10) on first pipeline.
3. Two-stage Compression Heating by Ground Source Heat Pump system according to claim 1, which is characterized in that
In being provided with the first expansion valve (11) on first pipeline.
4. Two-stage Compression Heating by Ground Source Heat Pump system according to claim 1, which is characterized in that
In being provided with the second expansion valve (12) on second pipeline.
5. Two-stage Compression Heating by Ground Source Heat Pump system according to claim 1, which is characterized in that
The condenser coil is helical coiled tube structure.
6. Two-stage Compression Heating by Ground Source Heat Pump system according to claim 1, which is characterized in that
The underground pipe includes buried coil pipe unit, and the buried coil pipe unit includes multiple, the whole buried coil pipe
It is in parallel between unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721550856.1U CN207674552U (en) | 2017-11-17 | 2017-11-17 | Two-stage Compression Heating by Ground Source Heat Pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721550856.1U CN207674552U (en) | 2017-11-17 | 2017-11-17 | Two-stage Compression Heating by Ground Source Heat Pump system |
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| Publication Number | Publication Date |
|---|---|
| CN207674552U true CN207674552U (en) | 2018-07-31 |
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|---|---|---|---|
| CN201721550856.1U Active CN207674552U (en) | 2017-11-17 | 2017-11-17 | Two-stage Compression Heating by Ground Source Heat Pump system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611006A (en) * | 2020-12-18 | 2021-04-06 | 杭州肖育科技有限公司 | Circulation energy-saving heating heat pump |
| CN113669856A (en) * | 2020-05-13 | 2021-11-19 | 广东美的制冷设备有限公司 | Air conditioner sterilization method, air conditioner and computer readable storage medium |
-
2017
- 2017-11-17 CN CN201721550856.1U patent/CN207674552U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669856A (en) * | 2020-05-13 | 2021-11-19 | 广东美的制冷设备有限公司 | Air conditioner sterilization method, air conditioner and computer readable storage medium |
| CN113669856B (en) * | 2020-05-13 | 2022-09-16 | 广东美的制冷设备有限公司 | Air conditioner sterilization method, air conditioner and computer readable storage medium |
| CN112611006A (en) * | 2020-12-18 | 2021-04-06 | 杭州肖育科技有限公司 | Circulation energy-saving heating heat pump |
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