CN209622928U - A kind of heat pump system of DC frequency-changing increasing enthalpy - Google Patents
A kind of heat pump system of DC frequency-changing increasing enthalpy Download PDFInfo
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- CN209622928U CN209622928U CN201920260639.1U CN201920260639U CN209622928U CN 209622928 U CN209622928 U CN 209622928U CN 201920260639 U CN201920260639 U CN 201920260639U CN 209622928 U CN209622928 U CN 209622928U
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- compressor
- flow path
- heat exchange
- increasing enthalpy
- heat
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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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model discloses a kind of heat pump systems of DC frequency-changing increasing enthalpy, including four-way valve, compressor, evaporator fin, water-side heat, gas-liquid separator and liquid storage device, compressor is equipped with an increasing enthalpy pipe, increasing enthalpy pipe is connected with economizer, and the first heat exchange flow path and the second heat exchange flow path are communicated with via economizer, increasing enthalpy pipe is connect with the second heat exchange flow path, and the second electric expansion valve and solenoid valve have been sequentially connected in series it, first heat exchange flow path is in series with the first electric expansion valve, and first electric expansion valve one end connect with evaporator fin, water-side heat communicates with the liquid storage device, and liquid storage device one end concatenates a filter, it is the beginning to be separated into two flow paths to connect with the first heat exchange flow path and the second heat exchange flow path respectively by filter, purpose is to isolate two flow paths by liquid storage device to begin, electronics is equipped on each flow path Expansion valve, and heat exchange is carried out by economizer, it is evaporated so that it is easier absorption environment temperature heat.
Description
Technical field
The utility model relates to heat-pump hot-water technology field more particularly to a kind of heat pump systems of DC frequency-changing increasing enthalpy.
Background technique
With the continuous improvement of living standards, requirement of the people to household is also higher and higher, do not require nothing more than healthiness and
It is required that energy conservation.DC frequency-changing air source heat pump belongs to the novel equipment for integrating heating and refrigeration, relative to traditional air
Source heat-pump apparatus, user more favor DC frequency-changing air source heat pump, not only due to low energy consumption for DC frequency-changing air source heat pump, and
And its service life is longer, it might even be possible to which the area for adapting to some spread of voltage has the advantages that traditional equipment is incomparable
And be accepted by people, but because it is influenced by environment temperature, it is difficult to adapt to the low temp area in the north.
It is well known that the air that the origin of heat of direct-current frequency conversion heat pump is just, the quality (density and temperature) of air is shadow
An important factor for ringing direct-current frequency conversion heat pump.Air themperature is low, and the efficiency of direct-current frequency conversion heat pump is relatively low, as shown in Figure 1, conduct
The heat pump system of existing DC frequency-changing often causes compression ratio super when environment temperature is lower than -20 DEG C because evaporating pressure is too low
The range that overcompression machine can bear, and under such circumstance temperature, when continuing high frequency operation, it is easy to happen excessive discharge temperature, is made
Lubricating oil viscosity sharply declines, and influences compressor lubrication, and it is abnormal that system there is also back liquid, oil return, will lead to pressure when serious
The problems such as contracting machine damages, therefore in order to reduce delivery temperature, being typically only capable to, which reduces compressor frequency, reaches proper ventilation temperature.But
Frequency reduction causes its ability also to decline accordingly, and the comfort requirement of user is not achieved.
Utility model content
The utility model aim is to provide a kind of heat pump system of DC frequency-changing increasing enthalpy, is to begin to isolate two by liquid storage device
A flow path is connect with fin heater and compressor respectively, electric expansion valve is equipped on each flow path, and pass through economizer
Heat exchange is carried out, is evaporated so that it is easier absorption environment temperature heat.
In order to achieve the above object, the technical solution of the utility model has:
A kind of heat pump system of DC frequency-changing increasing enthalpy, including four-way valve, compressor, evaporator fin, water-side heat, gas
Liquid/gas separator and liquid storage device, the four-way valve include D interface, C interface, S interface and E interface, and outlet and the D of the compressor connect
Mouth connection, the entrance of the compressor is connected with gas-liquid separator, and the gas-liquid separator is connect with S interface, the fin
Heat exchanger one end is connect with E interface, and described water-side heat one end is connect with C interface, it is characterised in that;It is set on the compressor
There is an increasing enthalpy pipe, the increasing enthalpy pipe is connected with economizer, and is communicated with the first heat exchange flow path and the second heat friendship via economizer
Change of current road, the increasing enthalpy pipe is connect with the second heat exchange flow path, and has been sequentially connected in series the second electric expansion valve and solenoid valve, described
First heat exchange flow path is in series with the first electric expansion valve, and first electric expansion valve one end is connect with evaporator fin,
The water-side heat communicates with the liquid storage device, and liquid storage device one end concatenates a filter, is to begin to be separated into two by the filter
Flow path is connect with the first heat exchange flow path and the second heat exchange flow path respectively.
The compressor is DC frequency-changeable compressor, and the compressor has build-in cavities, and the cavity periphery, which has, to be increased
Enthalpy mouth, the increasing enthalpy mouth are connect with increasing enthalpy pipe.
Pressure valve is provided on the outlet of the compressor and the connecting line of D interface.
A kind of heat pump system of the DC frequency-changing increasing enthalpy of the utility model, the beneficial effect is that: the utility model uses
DC frequency-changeable compressor is provided with increasing enthalpy mouth in the side of compressor, and by liquid storage device be begin to isolate two flow paths respectively with
Fin heater is connected with compressor, electric expansion valve is equipped on each flow path, and carry out heat exchange by economizer, made
Obtaining it, more easily absorption environment temperature heat is evaporated, and enables heat pump system being capable of efficient operation in the environment of low temperature
Heat is absorbed, the heating demand of user is met.
Detailed description of the invention
Fig. 1 is the prior-art illustration of the heat pump system;
Fig. 2 is the heat pump system structural schematic diagram of the utility model.
Specific embodiment
A kind of heat pump system of DC frequency-changing increasing enthalpy of the utility model is described with reference to the drawings.
As shown in Fig. 2, a kind of heat pump system of DC frequency-changing increasing enthalpy, including four-way valve 1, compressor 2, evaporator fin 4,
Water-side heat 5, gas-liquid separator 3 and liquid storage device 6, the four-way valve 1 include that D interface 11, C interface 12, S interface 13 and E connect
Mouth 14, the outlet of the compressor 2 is connect with D interface 11, and the entrance of the compressor 2 is connected with gas-liquid separator 3, and described
Gas-liquid separator 3 is connect with S interface 13, and described finned heat exchanger one end is connect with E interface 14, described 5 one end of water-side heat
It is connect with C interface 12, it is characterised in that;The compressor 2 is equipped with an increasing enthalpy pipe 21, and the increasing enthalpy pipe 21 is connected with economizer
7, and the first heat exchange flow path 71 and the second heat exchange flow path 72, the increasing enthalpy pipe 21 and the second heat are communicated with via economizer 7
It exchanges flow path 72 to connect, and has been sequentially connected in series the second electric expansion valve 721 and solenoid valve 722, the first heat exchange flow path 71
It is in series with the first electric expansion valve 711, and described first electric expansion valve, 711 one end is connect with evaporator fin 4, the water side
Heat exchanger 5 is connected to liquid storage device 6, and 6 one end of liquid storage device concatenates a filter 8, is to begin to be separated into two streams by the filter 8
Road is connect with the first heat exchange flow path 71 and the second heat exchange flow path 72 respectively.
As shown in Fig. 2, under normal temperature state, the solenoid valve 722 is normally off, and the first heat exchange flow path 71
In the first electric expansion valve 711 be auxiliary throttle solenoid valve 722, and be normally off, operating status and conventional direct current
The running route of frequency conversion heat pump system is consistent, and as low temperature low pressure gas enters in compressor 2, by 2 compression travel of compressor
The gas of high temperature and pressure enters water-side heat 5 via four-way valve 1 and carries out heat exchange, and the gas of high temperature and pressure is cooled at this time
The liquid refrigerants of cryogenic high pressure is formed, and the water in water-side heat 5 becomes hot water, using liquid storage device 6 and filter 8, stream
Enter economizer 7 and carry out heat exchange, then flow to evaporator fin 4 via the first electric expansion valve 711, then be back to four-way valve 1, passes through
It crosses gas-liquid separator 3 and carries out gas-liquid separation, the gas filtered out returns to be compressed in compressor 2.
At low temperature, in heat pump system operational process, as shown in Fig. 2, solenoid valve 722 and the first electric expansion valve 711 are
It is in the open state, while the operating loop with normal temperature state, also there is the second heat exchange loop, as follows:
Low temperature low pressure gas enters in compressor 2, by the gas of 2 compression travel high temperature and pressure of compressor, via four-way
Valve 1 enters water-side heat 5 and carries out heat exchange, at this time the cooled liquid refrigerants for forming cryogenic high pressure of the gas of high temperature and pressure,
And the water in water-side heat 5 becomes hot water, using liquid storage device 6 and filter 8, using solenoid valve 722 and the second electronics
Expansion valve 721 flows into economizer 7 and carries out heat exchange, is then refluxed for compressor 2, which will be stagnant in the second heat exchange loop
The gas stayed draw back and is filled into compressor 2, and compressor 2 is made to remain that full load condition works, from another angle
Cost is saved, compression efficiency is improved.
In the utility model, solenoid valve 722 is in normally open when temperature is lower, and flows through 6 He of liquid storage device in gas
After filter 8, shunted, as the first heat exchange loop and the second heat exchange loop, by the second electric expansion valve 721 into
Row throttling control, the refrigerant being throttled is same as the refrigerant in the second exchange circuit to carry out heat exchange in economizer 7, then increases
Refrigerant in first heat exchange flow path 71 makes the first heat exchange in the degree of supercooling after the expansion of first electric expansion valve 711
Refrigerant in circuit is evaporated operation being easier to absorb environment temperature heat after the expansion of the first electric expansion valve 711.
Wherein, it is preferred that the liquid storage device 6 is being stored up water-side heat 5 by the refrigerant that refrigerant take out of after heat exchange
It is stored in liquid device 6, prevents its excessive refrigerant from overstocking in water-side heat 5, cause system pressure excessively high and shut down.
Preferably, the filter 8, which may filter that, brought into not after water-side heat 5 completes heat exchange work by refrigerant
The impurity easily precipitated prevents it from entering other core components of heat pump system, avoids device damage.
Preferably, the gas-liquid separator 3 is further ensured that again for separating gaseous coolant with liquid refrigerants
The refrigerant of reflux be it is gaseous, avoid liquid refrigerants from returning to compressor, cause compressor liquid hammer, and damage compressor.
The refrigerant amount of flowing through wherein via the second heat exchange flow path 72 is few, and liquid refrigerants is easy by the second heat exchange flow path
72 refrigerant heat of vaporization is fallen, and is handled without connecting gas-liquid separation device.
According to above-mentioned, as shown in Fig. 2, the economizer 7 has central role in this heat pump system, on the one hand to first
The refrigerant of heat exchange flow path 71 crosses cold treatment before being throttled, and increases enthalpy difference;On the other hand, to being passed through in the second heat exchange flow path 72
The refrigerant of low-pressure low-temperature after crossing the decompression of the second electric expansion valve 721 carries out preheating appropriate, to reach suitable middle pressure, provides
Second-compressed is carried out to compressor 2.
As shown in Fig. 2, the compressor 2 is DC frequency-changeable compressor 2, there are the compressor 2 build-in cavities (not show
Out), there is thermal insulation layer (not shown) between 2 shell of compressor, reduce the temperature change pair that 2 internal work of compressor generates
The external world influences, and so that the temperature of 2 application places of compressor is maintained at preference temperature, and the cavity periphery has increasing enthalpy mouth 22, institute
It states increasing enthalpy mouth 22 to connect with increasing enthalpy pipe 21, this meets production application needs, makes it have increasing enthalpy throttling and improves the row of compressor 2
The function of tolerance.
It is provided with pressure valve 23 on the outlet of the compressor 2 and the connecting line of D interface 11, for detecting through overcompression
The pressure value of the refrigerant of 2 compression processing of machine, meets application demand.
A kind of heat pump system of the DC frequency-changing increasing enthalpy of the utility model, the beneficial effect is that: the utility model uses
DC frequency-changeable compressor 2 is provided with increasing enthalpy mouth 22 in the side of compressor 2, and is to begin to isolate two flow paths point by liquid storage device 6
It is not connect with fin heater and compressor 2, electric expansion valve is equipped on each flow path, and heat is carried out by economizer 7
Exchange is evaporated so that it is easier absorption environment temperature heat, enables heat pump system can in the environment of low temperature
Efficient operation absorbs heat, meets the heating demand of user.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and is modified.Therefore, the utility model is not limited to specific embodiment disclosed and described above, right
Some modifications and changes of the utility model should also be as falling into the protection scope of the claims of the present utility model.In addition, to the greatest extent
It is used some specific terms in pipe this specification, these terms are merely for convenience of description, not to the utility model
Constitute any restrictions.
Claims (3)
1. a kind of heat pump system of DC frequency-changing increasing enthalpy, including four-way valve, compressor, evaporator fin, water-side heat, gas-liquid
Separator and liquid storage device, the four-way valve include D interface, C interface, S interface and E interface, the outlet of the compressor and D interface
Connection, the entrance of the compressor is connected with gas-liquid separator, and the gas-liquid separator is connect with S interface, and the fin changes
Hot device one end is connect with E interface, and described water-side heat one end is connect with C interface, it is characterised in that;
The compressor is equipped with an increasing enthalpy pipe, and the increasing enthalpy pipe is connected with economizer, and is communicated with the first heat via economizer
Flow path and the second heat exchange flow path are exchanged, the increasing enthalpy pipe is connect with the second heat exchange flow path, and has been sequentially connected in series the second electronics
Expansion valve and solenoid valve, the first heat exchange flow path are in series with the first electric expansion valve, and first electric expansion valve one
End is connect with evaporator fin, and the water-side heat communicates with the liquid storage device, and liquid storage device one end concatenates a filter, by described
Filter is the beginning to be separated into two flow paths to connect with the first heat exchange flow path and the second heat exchange flow path respectively.
2. heat pump system according to claim 1, which is characterized in that the compressor is DC frequency-changeable compressor, described
Compressor has build-in cavities, and the cavity periphery has increasing enthalpy mouth, and the increasing enthalpy mouth is connect with increasing enthalpy pipe.
3. heat pump system according to claim 2, which is characterized in that the outlet of the compressor and the connecting tube of D interface
Road is provided with pressure valve.
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CN201920260639.1U CN209622928U (en) | 2019-03-01 | 2019-03-01 | A kind of heat pump system of DC frequency-changing increasing enthalpy |
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CN201920260639.1U CN209622928U (en) | 2019-03-01 | 2019-03-01 | A kind of heat pump system of DC frequency-changing increasing enthalpy |
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