CN208254017U - A kind of net for air-source heat pump units of continuous heat supply - Google Patents
A kind of net for air-source heat pump units of continuous heat supply Download PDFInfo
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- CN208254017U CN208254017U CN201820476877.1U CN201820476877U CN208254017U CN 208254017 U CN208254017 U CN 208254017U CN 201820476877 U CN201820476877 U CN 201820476877U CN 208254017 U CN208254017 U CN 208254017U
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Abstract
The utility model relates to a kind of net for air-source heat pump units of continuous heat supply, including compressor unit, indoor water heat exchange unit, quasi- two-stage compression unit, outdoor air heat exchange unit and defrosting branching unit, the integrated technology scheme combined using quasi- two-stage compression with principle of time-space, on the one hand gas supplementing opening is added to compressor, intermediate plate heat exchanger is added, in systems to constitute quasi- secondary compression heat pump circulation；On the other hand by air source heat pump outdoor air heat exchanger be set as at least two can independently operated branch take heat and defrosting system, defrosting operation is carried out to the fluoro- air heat-exchange mechanism of each branch with moving in turn one by one, to realize move in turn accurate defrosting and continuous heat supply.
Description
Technical field
The utility model relates to a kind of net for air-source heat pump units, more particularly to a kind of air source heat pump machine of continuous heat supply
Group.
Background technique
Air source heat pump is a kind of energy saver for making heat flow to from low level heat energy air high-order heat source using high potential,
It is a kind of form of heat pump.Air source heat pump is applied widely, can run throughout the year, guards without special messenger, fortune
Row is at low cost, and energy-efficient effect is very prominent, belongs to the product of environment-friendly type.Its not discharge of pollutant in the process of running,
Human body will not be damaged simultaneously, possess good social benefit, therefore in China's regional heating cold in winter and hot in summer, refrigeration
It is widely used.
But in north cold area (Huaihe River north domain), as outdoor temperature reduces, the application of air source heat pump generates many
The problems such as problem: suction pressure of compressor is lower, and compression ratio becomes larger, and delivery temperature is got higher, and heating capacity and efficiency are greatly reduced,
These problems seriously affect the operational reliability and heating system stability of heat pump unit.
Meanwhile when net for air-source heat pump units winter operation, when outdoor air heat exchanger surface temperature is lower than surrounding air
Dew-point temperature and be lower than 0 DEG C when, heat exchanger surface will frosting.Frost is formed such that heat exchanger heat transfer effect deteriorates, and increases
Air flow resistance is added, so that the heat capacity of unit reduces, unit can influence heat pump unit heat supply out of service when serious.
The frosting of air source heat pump winter outdoor heat exchanger and defrosting are the key that restrict its application and development common problem at present.
Currently, the defrosting mode of air source heat pump usually has: natural defrosting method, inverse circulation defrosting method, electric defrosting method etc..And
From the point of view of actual effect, these conventional methods cannot achieve the continuous heat supply of defrosting operating condition all there is insufficient and defect, past
Toward will cause the frequent start-stop of compressor and the frequent switching of four-way reversing valve, the fluctuation of heat pump supply water temperature, shadow will also result in
Ring indoor heating effect etc..
Utility model content
The purpose of this utility model is that the purpose of this utility model is for heating capacity under existing air source heat pump low temperature
The problem of being greatly reduced with efficiency, and cannot achieve the continuous heat supply of defrosting operating condition proposes a kind of air-source heat of continuous heat supply
Pump assembly.
To achieve the above object, the utility model provides a kind of net for air-source heat pump units of continuous heat supply, including compression
Machine unit, indoor water heat exchange unit, quasi- two-stage compression unit, outdoor air heat exchange unit and defrosting branching unit；
The compressor unit includes sequentially connected gas-liquid separator, compressor, oil eliminator, bindiny mechanism；
The indoor water heat exchange unit includes the fluoro- water- to-water heat exchanger being connected with the bindiny mechanism, the fluoro- water heat exchange
Device is equipped with water out and water inlet；
The quasi- two-stage compression unit includes the plate heat exchanger being connected with the fluoro- water- to-water heat exchanger, the plate-type heat-exchange
Branch is equipped with heating circuit and quasi- two-stage compression circuit on device, the heating circuit be directly connected with the plate heat exchanger and
Back segment is equipped with check valve, and the quasi- two-stage compression circuit includes the quasi- two-stage compression solenoid valve being successively set on pipeline, standard two
Grade compression of electronic expansion valve, plate heat exchanger, check valve are simultaneously finally connected with the compressor；
The outdoor air heat exchange unit includes the fluoro- air heat-exchange mechanism that at least two groups are arranged in parallel, the fluoro- air
Heat exchange mechanisms include fluoro- air heat exchanger, the heating branch being arranged in parallel on the fluoro- air heat exchanger and defrosting branch with
And the blower on the fluoro- air heat exchanger is set, the heating branch is equipped with shunting system thermoelectron expansion valve and unidirectionally
Valve, the defrosting branch are equipped with branch defrosting solenoid valve；
The defrosting branching unit includes the defrosting access being arranged between the oil eliminator and bindiny mechanism, described to melt
Defrosting solenoid valve, bidirectional guide mechanism, go back to liquid side of the defrosting solenoid valve and bidirectional guide mechanism are successively arranged on white access
Between branch be connected respectively with the defrosting branch, between the tapping side and bindiny mechanism of the bidirectional guide mechanism branch distinguish
It is connected with the heating branch；
The net for air-source heat pump units only carries out defrosting to a wherein Zu Fu- air heat-exchange mechanism every time in defrosting, according to
It is secondary to flow through defrosting access, the refrigeration working medium in wherein at least one defrosting branch and successively through fluoro- water- to-water heat exchanger, plate heat exchanger
Refrigeration working medium after heat exchange returns liquid side mixed flow in bidirectional guide mechanism, and the tapping side branch through bidirectional guide mechanism flows respectively
Heating branch into remaining fluoro- air heat-exchange mechanism.
Preferably, the bindiny mechanism is four-way reversing valve.
Preferably, the indoor water heat exchange unit further include setting the fluoro- water- to-water heat exchanger and bidirectional guide mechanism it
Between refrigeration access, the refrigeration access is arranged in parallel with the heating circuit, and it is swollen that the refrigeration access is equipped with cooling electronic
Swollen valve and the check valve oppositely arranged with the check valve on heating circuit.
Preferably, the two sides of shunting system thermoelectron expansion valve and check valve have been arranged in parallel refrigeration in each heating branch
Branch, the refrigeration branch are equipped with the oppositely arranged check valve of the check valve being connected with the shunting system thermoelectron expansion valve.
Preferably, the refrigeration work of the fluoro- air heat exchanger in the defrosting branch is arranged in the branch defrosting solenoid valve
The refrigeration working medium outlet side of matter entrance side, the fluoro- air heat exchanger in the defrosting branch is equipped with check valve.
Preferably, the liquid back pipe road for the bidirectional guide mechanism being connected with the defrosting branch is equipped with check valve and cuts manually
Only valve.
Preferably, the tapping side of the bidirectional guide mechanism is equipped with check valve, and the liquid out of the bidirectional guide mechanism
In parallel between side and time liquid side to be equipped with refrigeration access, the refrigeration access is equipped with check valve.
Preferably, in the fluoro- air heat exchanger, air passes sequentially through heating branch, defrosting under the driving of blower
Branch.
Preferably, the net for air-source heat pump units every time melts a wherein Zu Fu- air heat-exchange mechanism in defrosting
Frost carries out defrosting operation to each Zu Fu- air heat-exchange mechanism with moving in turn one by one.
Preferably, the outdoor air heat exchange unit includes 4~12 groups of fluoro- air heat-exchange mechanisms being arranged in parallel.
Based on the above-mentioned technical proposal, the utility model has the advantages that:
1, the delivery temperature that compressor is reduced using the quasi- two-stage compression of Gas-supplying enthalpy-increasing, reduces compression ratio, improves
Net for air-source heat pump units keeps the application range of net for air-source heat pump units wider in the operation stability and efficiency of worst cold case, from
And make branch move in turn defrosting and continuous heat supply technical solution application it is more wide；
2, when defrosting operating condition, quasi- two-stage compression system and the branch defrosting system that moves in turn are coupled, and facilitate smooth compression machine
The fluctuation of suction tolerance can avoid the protectiveness occurred because pressure of inspiration(Pi) is too low and shut down, further ensures air source heat pump machine
The operation stability of group；
3, the heating of other branches, heat pump unit are not influenced in the net for air-source heat pump units of the utility model when certain branch defrosting
The continuous heat supply of feasible system avoids making unit refrigeration and system by four-way reversing valve when existing net for air-source heat pump units defrosting
Hot frequent switching improves the effective heating time of heat pump unit and winter gross heat input, improves air source heat pump Winter heat supply
Effect；
4, the four-way reversing valve in the net for air-source heat pump units of the utility model is only used for cooling in summer and winter heating turns
Switching when changing, defrosting do not need to switch when operating, and greatly reduce switch (start and stop) number of four-way reversing valve (including compressor),
Improve the reliability of net for air-source heat pump units；
5, the defrosting heat-exchanging loop that outdoor air heat exchanging part is added in the net for air-source heat pump units of the utility model make be
The heat exchange area of system increases, and heat pump unit refrigeration and the Energy Efficiency Ratio of heating improve；
6, the blower of existing air source heat pump outdoor heat exchanger is shared, using the consistent mode of start and stop, the wind of single blower
Amount is larger with noise, and the utility model uses more branch air heat exchangers and its fan design thinking, reduces single blower
Air quantity and noise, unit overall noise can reduce greatly.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is the net for air-source heat pump units schematic diagram of continuous heat supply.
Specific embodiment
Below by drawings and examples, the technical solution of the utility model is described in further detail.
The utility model provides a kind of net for air-source heat pump units of continuous heat supply, as shown in Figure 1, this reality is shown
With a kind of novel preferred embodiment.The net for air-source heat pump units of the utility model includes compressor unit, indoor water heat exchange
Unit, quasi- two-stage compression unit, outdoor air heat exchange unit and defrosting branching unit.
The compressor unit includes sequentially connected gas-liquid separator 9, compressor 1, oil eliminator 2, bindiny mechanism 3；
The indoor water heat exchange unit includes the fluoro- water- to-water heat exchanger 6 being connected with the bindiny mechanism 3, and the fluoro- water changes
Hot device 6 is equipped with water out 15 and water inlet 16；
The quasi- two-stage compression unit includes the plate heat exchanger 17 being connected with the fluoro- water- to-water heat exchanger 6, described board-like to change
Branch is equipped with heating circuit and quasi- two-stage compression circuit on hot device 17, the heating circuit directly with 17 phase of plate heat exchanger
It even and in back segment is equipped with check valve 8, the quasi- two-stage compression circuit includes the quasi- two-stage compression electromagnetism being successively set on pipeline
Valve 19, quasi- two-stage compression electric expansion valve 18, plate heat exchanger 17, check valve 8 are simultaneously finally connected with the compressor 1；
The outdoor air heat exchange unit includes the fluoro- air heat-exchange mechanism that at least two groups are arranged in parallel, the fluoro- air
Heat exchange mechanisms include fluoro- air heat exchanger, the heating branch being arranged in parallel on the fluoro- air heat exchanger and defrosting branch with
And the blower on the fluoro- air heat exchanger is set, the heating branch is equipped with shunting system thermoelectron expansion valve and unidirectionally
Valve 8, the defrosting branch are equipped with branch defrosting solenoid valve；
The defrosting branching unit includes the defrosting access being arranged between the oil eliminator 2 and bindiny mechanism 3, described
Be successively arranged hand stop valve 5, defrosting solenoid valve 4, bidirectional guide mechanism 10 on defrosting access, the defrosting solenoid valve 4 with it is double
It is connected respectively with the defrosting branch to the branch between liquid side of returning of deflector 10, the tapping side of the bidirectional guide mechanism 10
Branch is connected with the heating branch respectively between bindiny mechanism 3；
The net for air-source heat pump units only carries out defrosting to a wherein Zu Fu- air heat-exchange mechanism every time in defrosting, according to
It is secondary to flow through defrosting access, the refrigeration working medium in wherein at least one defrosting branch and successively through fluoro- water- to-water heat exchanger 6, plate-type heat-exchange
Refrigeration working medium after device 17 exchanges heat returns liquid side mixed flow in bidirectional guide mechanism 10, and through the tapping side of bidirectional guide mechanism 10 point
Road flows to the heating branch in remaining fluoro- air heat-exchange mechanism respectively.
The net for air-source heat pump units of the utility model is combined using quasi- two-stage compression with principle of time-space comprehensive
Technology path proposes that the more by-passing types of quasi- two-stage compression that air source heat pump is completely new under low ambient temperature operating condition take heat to melt with wheel dynamic formula
On the one hand white technical solution adds gas supplementing opening to compressor, adds intermediate plate heat exchanger in systems, to constitute quasi- second level pressure
Contracting heat pump cycle；On the other hand by air source heat pump outdoor air heat exchanger be set as at least two can independently operated branch take
Heat and defrosting system.One heating branch and defrosting point are individually respectively set to every outdoor air heat-exchange system independent all the way
Cutting for defrosting operating condition and heating condition is realized by the pipelines such as the opening and closing of solenoid valve and electric expansion valve, check valve and pipe fitting in road
It changes.Wherein fluoro- air heat-exchange mechanism carries out not influencing the fluoro- air heat-exchange mechanism branch heating of other branches while defrosting all the way
The operation of operating condition carries out defrosting operation to the fluoro- air heat-exchange mechanism of each branch with moving in turn one by one, moves in turn precisely to realize
Defrosting and continuous heat supply.
Tthe utility model system is divided into five parts, respectively compressor unit, indoor water heat exchange unit, quasi- two-stage compression
Unit, outdoor air heat exchange unit and defrosting branching unit.
Specifically, the compressor unit includes sequentially connected gas-liquid separator 9, compressor 1, oil eliminator 2, connection
Mechanism 3.Preferably, the compressor 1 is frequency-changeable compressor, to obtain better energy-saving effect.To make compressor 1 complete standard two
Grade compression, the compressor 1 are equipped with auxilairy air intake, the refrigeration working medium for sucking in quasi- two-stage compression circuit.When this reality
When being only used for heating with novel net for air-source heat pump units, the bindiny mechanism 3 can be used pipeline and be directly connected to, and be not necessarily on pipeline
Valve is configured, the oil eliminator 2 is connected to the direct copper pipe of fluoro- water- to-water heat exchanger 6, the gas-liquid separator 9 and fluoro- air heat-exchange
Mechanism direct copper pipe connection, net for air-source heat pump units is simply possible to use in heating at this time, no setting is required four-way valve.
The indoor water heat exchange unit includes the fluoro- water- to-water heat exchanger 6 being connected with the bindiny mechanism 3, and the fluoro- water changes
Hot device 6 is equipped with water out 15 and water inlet 16.It, as condensation side, evaporation side can be used as in refrigeration, is led in heating
The water out 15 and water inlet 16 being arranged on the fluoro- water- to-water heat exchanger 6 are crossed, user side can be directly connected to, to be user
Hot water or cold water is provided.
The quasi- two-stage compression unit includes the plate heat exchanger 17 being connected with the fluoro- water- to-water heat exchanger 6, described board-like to change
Branch is equipped with heating circuit and quasi- two-stage compression circuit on hot device 17.Heating when, it is described heating circuit in refrigeration working medium with
Refrigeration working medium in quasi- two-stage compression circuit carries out heat exchange in the plate heat exchanger (17).The heating circuit directly with
The plate heat exchanger 17 is connected and is equipped with check valve 8 in back segment, and refrigeration working medium liquid is directly entered plate heat exchanger 17.It is described
Quasi- two-stage compression circuit includes the quasi- two-stage compression solenoid valve 19 being successively set on pipeline, quasi- two-stage compression electric expansion valve
18, plate heat exchanger 17, check valve 8 and finally it is connected with the compressor 1, refrigeration working medium liquid is through quasi- two-stage compression solenoid valve
19 and quasi- 18 reducing pressure by regulating flow of two-stage compression electric expansion valve after also enter plate heat exchanger 17, this two parts refrigeration working medium is described
After generating heat exchange in plate heat exchanger 17, the refrigeration working medium in the quasi- two-stage compression circuit becomes after gas by compressor 1
Auxilairy air intake sucking.
The outdoor air heat exchange unit includes the fluoro- air heat-exchange mechanism that at least two groups are arranged in parallel, the fluoro- air
Heat exchange mechanisms include fluoro- air heat exchanger, the heating branch being arranged in parallel on the fluoro- air heat exchanger and defrosting branch with
And the blower on the fluoro- air heat exchanger is set, the heating branch is equipped with shunting system thermoelectron expansion valve and unidirectionally
Valve 8, the defrosting branch are equipped with branch defrosting solenoid valve.
As shown in Figure 1, the net for air-source heat pump units in the present embodiment has been arranged in parallel four Zu Fu- air heat-exchange mechanisms, packet
Include the first shunting system thermoelectron expansion valve 11-1, the fluoro- air heat exchanger 13-1 of the first branch and the first branch blower 14-1；Second
Shunting system thermoelectron expansion valve 11-2, the fluoro- air heat exchanger 13-2 of the second branch and the second branch blower 14-2；Third shunting system
The fluoro- air heat exchanger 13-3 of thermoelectron expansion valve 11-3, third branch and third branch blower 14-3；4th shunting system thermoelectron
It is arranged on expansion valve 11-4, the fluoro- air heat exchanger 13-4 of the 4th branch and the 4th branch blower 14-4 and its each pipeline unidirectional
Valve 8.Since net for air-source heat pump units is arranged in parallel the fluoro- air heat-exchange mechanism of multiple groups, every group of fluoro- air heat exchanger is individually used
One blower, so that blower independent control, more efficient, noise is lower.Preferably, in the fluoro- air heat exchanger, air
Under the driving of blower, heating branch, defrosting branch are passed sequentially through, so that defrosting branch is arranged in the case where heating branch air
Side is swum, to obtain better defrosting effect.
The defrosting branching unit includes the defrosting access being arranged between the oil eliminator 2 and bindiny mechanism 3, described
The branch between liquid side of returning of defrosting solenoid valve 4 and bidirectional guide mechanism 10 is connected with the defrosting branch respectively, described two-way to lead
Branch between the tapping side and bindiny mechanism 3 of mechanism 10 is flowed to be connected with the heating branch respectively.Pass through defrosting access, oil separation
The refrigeration working medium that device 2 comes out can be delivered directly to the fluoro- air heat exchanger of a certain defrosting branch, it is made to carry out defrosting.It is described
Hand stop valve 5, defrosting solenoid valve 4, bidirectional guide mechanism 10 are successively arranged on defrosting access, the setting of hand stop valve 5 is just
Refrigeration working medium after maintenance, defrosting changes in bidirectional guide mechanism 10 with successively through fluoro- water- to-water heat exchanger 6, plate heat exchanger 17
Refrigeration working medium after heat returns liquid side mixed flow in bidirectional guide mechanism 10.The bidirectional guide mechanism 10 is former using high speed water conservancy diversion
Reason, such as the mode of jet stream, carries out mixing confluence for the refrigeration working medium of two kinds of different pressures states.
As shown in Figure 1, in embodiment, the defrosting branching unit is divided into four branches, including the first branch defrosting electricity
Magnet valve 12-1, the second branch defrosting solenoid valve 12-2, third branch defrosting solenoid valve 12-3, the 4th branch defrosting solenoid valve 12-4
And its check valve 8 being arranged on each pipeline.Wherein, the net for air-source heat pump units is only fluoro- to wherein one group every time in defrosting
Air heat-exchange mechanism carry out defrosting, followed by defrosting access, wherein at least one defrosting branch refrigeration working medium with through fluoro-
Refrigeration working medium after water- to-water heat exchanger 6 exchanges heat returns liquid side mixed flow in bidirectional guide mechanism 10, and going out through bidirectional guide mechanism 10
Liquid side branch flows to the heating branch in remaining fluoro- air heat-exchange mechanism respectively.
Compared to conventional air source heat pump unit, the utility model can still guarantee heat supply in defrosting, by one by one
Defrosting operation is carried out to the fluoro- air heat-exchange mechanism of each branch with moving in turn, thus realize move in turn accurate defrosting and continuous heat supply,
Heating effect is more preferable, greatly reduces start/stop of compressor number, runs more reliable.Simultaneously as heating time increases, thus
Improve the gross heat input of unit within a certain period of time.And since the defrosting time is short, it can be achieved that accurate defrosting；Further, by
Increase in heat exchange area, Energy Efficiency Ratio also can be improved, and unit is enabled to reach high efficiency grade.
Preferably, the liquid back pipe road for the bidirectional guide mechanism 10 being connected with the defrosting branch is equipped with check valve 8 and hand
Dynamic shut-off valve 5, can be effectively prevented the reflux of refrigeration working medium.In order to preferably by the refrigeration working medium after defrosting two-way
With the refrigeration working medium successively after fluoro- water- to-water heat exchanger 6, plate heat exchanger 17 exchange heat in bidirectional guide mechanism 10 in deflector 10
Return liquid side mixed flow, it is preferable that the tapping side of the bidirectional guide mechanism 10 is equipped with check valve 8, and the bidirectional guide machine
In parallel between the tapping side of structure 10 and time liquid side to be equipped with refrigeration access, the refrigeration access is equipped with check valve 8.Preferably, institute
Net for air-source heat pump units is stated in defrosting, defrosting operation is carried out to each Zu Fu- air heat-exchange mechanism with moving in turn one by one, thus real
The continuous heat supply of existing unit.
Preferably, the bindiny mechanism 3 is four-way reversing valve, switches piping connection by four-way reversing valve, so that this reality
Heating and refrigerating function are provided simultaneously with novel net for air-source heat pump units.At this point, the indoor water heat exchange unit further includes setting
Set the refrigeration access between the fluoro- water- to-water heat exchanger 6 and bidirectional guide mechanism 10, the refrigeration access and the heating circuit
It is arranged in parallel, the refrigeration access is oppositely arranged equipped with cooling electronic expansion valve 7 and with the check valve 8 on heating circuit
Check valve 8.
Preferably, the two sides of shunting system thermoelectron expansion valve and check valve 8 have been arranged in parallel system in each heating branch
Cold branch, the refrigeration branch are equipped with oppositely arranged unidirectional of the check valve 8 that is connected with the shunting system thermoelectron expansion valve
Valve 8.Preferably, the refrigeration working medium for the fluoro- air heat exchanger that the branch defrosting solenoid valve is arranged in the defrosting branch enters
The refrigeration working medium outlet side of mouthful side, the fluoro- air heat exchanger in the defrosting branch is equipped with check valve 8.
Under the heating condition for not needing defrosting, the high temperature and pressure refrigeration working medium gas come out from compressor is separated via oil
Device and four-way reversing valve are condensed into liquid, and in plate heat exchanger into heat release is carried out in fluoro- water- to-water heat exchanger (condenser)
Subcooled liquid is exchanged heat into, by check valve and bidirectional guide mechanism, respectively enters heating branch, is throttled and is dropped by electric expansion valve
Pressure, absorbs heat into fluoro- air heat exchanger (evaporator), after refrigeration working medium vaporization heat absorption, through four-way reversing valve by compressor
Circulation is completed in sucking.
When needing defrosting, the defrosting solenoid valve in defrosting branch is opened, while the heating electric expansion valve of the circuit system
It closes, the refrigeration working medium of high temperature and pressure enters fluoro- air heat exchanger (evaporator) by defrosting electric expansion valve and carries out defrosting, so
After being mixed in bidirectional guide mechanism with the refrigeration working medium for having neither part nor lot in defrosting afterwards, circulation is continued to complete into other circuits,
It can be heated while defrosting to realize.
Preferably, the outdoor air heat exchange unit includes 4~12 groups of fluoro- air heat-exchange mechanisms being arranged in parallel, to obtain
Obtain preferable defrosting effect.
The net for air-source heat pump units of the continuous heat supply of the utility model at least has the advantages that
1, the delivery temperature that compressor is reduced using the quasi- two-stage compression of Gas-supplying enthalpy-increasing, reduces compression ratio, improves
Net for air-source heat pump units keeps the application range of net for air-source heat pump units wider in the operation stability and efficiency of worst cold case, from
And make branch move in turn defrosting and continuous heat supply technical solution application it is more wide；
2, when defrosting operating condition, quasi- two-stage compression system and the branch defrosting system that moves in turn are coupled, and facilitate smooth compression machine
The fluctuation of suction tolerance can avoid the protectiveness occurred because pressure of inspiration(Pi) is too low and shut down, further ensures air source heat pump machine
The operation stability of group；
3, the heating of other branches, heat pump unit are not influenced in the net for air-source heat pump units of the utility model when certain branch defrosting
The continuous heat supply of feasible system avoids making unit refrigeration and system by four-way reversing valve when existing net for air-source heat pump units defrosting
Hot frequent switching improves the effective heating time of heat pump unit and winter gross heat input, improves air source heat pump Winter heat supply
Effect；
4, the four-way reversing valve in the net for air-source heat pump units of the utility model is only used for cooling in summer and winter heating turns
Switching when changing, defrosting do not need to switch when operating, and greatly reduce switch (start and stop) number of four-way reversing valve (including compressor),
Improve the reliability of net for air-source heat pump units；
5, the defrosting heat-exchanging loop that outdoor air heat exchanging part is added in the net for air-source heat pump units of the utility model make be
The heat exchange area of system increases, and heat pump unit refrigeration and the Energy Efficiency Ratio of heating improve；
6, the blower of existing air source heat pump outdoor heat exchanger is shared, using the consistent mode of start and stop, the wind of single blower
Amount is larger with noise, and the utility model uses more branch air heat exchangers and its fan design thinking, reduces single blower
Air quantity and noise, unit overall noise can reduce greatly.
As shown in Figure 1, for the fluoro- air heat-exchange mechanism being arranged in parallel by four groups, the sky of the utility model continuous heat supply
The principle that air supply heat pump unit obtains above-mentioned technical effect is described below:
In winter under heating condition, the heating electronics of each fluoro- air heat-exchange mechanism branch of outdoor air heat exchange unit
Expansion valve and blower are opened.Such as: the first shunting system thermoelectron expansion valve 11-1 and the first branch blower 14-1, the second shunting system
Thermoelectron expansion valve 11-2 and the second branch blower 14-2, third shunting system thermoelectron expansion valve 11-3 and third branch blower
14-3, the 4th shunting system thermoelectron expansion valve 11-4 and the 4th branch blower 14-4 are opened；Quasi- two-stage compression electric expansion valve 18
It is opened with quasi- two-stage compression solenoid valve 19；The defrosting solenoid valve 4 of defrosting passed part and the defrosting solenoid valve of each branch are closed,
Such as: the first branch defrosting solenoid valve 12-1, the second branch defrosting solenoid valve 12-2, third branch defrosting solenoid valve 12-3,
Four branch defrosting solenoid valve 12-4 are closed；Cooling electronic expansion valve 7 is closed.The high temperature and pressure refrigeration working medium come out from compressor 1
Gas is condensed into liquid, is divided into 2 tunnels via oil eliminator 2 and four-way reversing valve 3 into heat release is carried out in fluoro- water- to-water heat exchanger 6:
Main road is heating circuit, two-stage compression circuit subject to bypass.The refrigeration working medium liquid of main road is directly entered plate heat exchanger 17；It is auxiliary
The refrigeration working medium liquid on road also enters after quasi- two-stage compression solenoid valve 19 and quasi- 18 reducing pressure by regulating flow of two-stage compression electric expansion valve
Plate heat exchanger 17.After this two parts refrigeration working medium generates heat exchange in plate heat exchanger 17, the refrigeration working medium of bypass becomes
It is sucked after gas by the auxilairy air intake of compressor 1, the refrigeration working medium of main road becomes subcooled liquid by check valve 8 and two-way leads
Mechanism 10 is flowed, four heating branches are respectively enterd.In the first branch, electronic expansion is heated by check valve 8 and the first circuit
Valve 11-1 reducing pressure by regulating flow absorbs heat into fluoro- air heat exchanger 13-1；Second and third, four heating branches heating condition process
And so on.After the refrigeration working medium vaporization heat absorption of four heating branches, converges through four-way reversing valve 3 and gas-liquid separator 9, pressed
Contracting machine 1 sucks, and the refrigeration working medium of main road and bypass mixes in 1 working chamber of compressor, and compressor 1 is discharged after further compressing
Outside, heating circulation is completed.
In winter when defrosting operating condition, defrosting solenoid valve 4, hand stop valve 5 on defrosting access are opened, and are successively melted to four
White branch carries out defrosting.When one of defrosting branch carries out defrosting, the shunting system in heating branch where the defrosting branch
Thermoelectron expansion valve is closed, other heating branches are still run according to heating condition.For example, when the first branch starts defrosting, the
One branch defrosting solenoid valve 12-1 is opened, while the first shunting system thermoelectron expansion valve 11-1 is closed, the first circuit blower 14-1
It stops working, realizes the switching of heating condition and defrosting operating condition.High-temperature refrigeration working medium is by defrosting solenoid valve 12-1, into first
The fluoro- air heat exchanger 13-1 of branch releases heat and melts frost layer, then passes through check valve 8 and hand stop valve 5, into double
Carry out into deflector 10 with the refrigeration working medium in addition having neither part nor lot in defrosting after confluence mixes, into remaining three heating branches after
It is continuous to complete heating condition circulation.Then successively to second and third, four branches carry out defrosting of moving in turn, defrosting process is same as above.
Under cooling in summer operating condition, cooling electronic expansion valve 7 is opened, the defrosting solenoid valve 4 of defrosting loop feature and each
The heating electric expansion valve and defrosting solenoid valve in circuit are closed, such as: the first shunting system thermoelectron expansion valve 11-1 and first point
Road defrosting solenoid valve 12-1, the second shunting system thermoelectron expansion valve 11-2 and the second branch defrosting solenoid valve 12-2, third branch
Heat electric expansion valve 11-3 and third branch defrosting solenoid valve 12-3, the 4th shunting system thermoelectron expansion valve 11-4 and the 4th point
Road defrosting solenoid valve 12-4 is closed；Quasi- two-stage compression electric expansion valve 18 and quasi- two-stage compression solenoid valve 19 are closed.From compressor 1
Refrigeration working medium out respectively enters four Zu Fu- air heat-exchange mechanisms via oil eliminator 2 and four-way reversing valve 3.At first point
Lu Zhong flows through the check valve 8 in bypass after carrying out heat release into fluoro- air heat exchanger 13-1；At second and third, in four branches
The heat transfer process of fluoro- air heat-exchange mechanism is similarly.The refrigeration working medium of four Zu Fu- air heat-exchange mechanisms converges, through on refrigeration access
Check valve 8 and cooling electronic expansion valve 7, into absorbing heat in fluoro- water- to-water heat exchanger 6, through four-way reversing valve 3 and gas-liquid separation
Device 9 is sucked by compressor 1 and completes refrigeration cycle.
Finally it should be noted that: above embodiments are only to illustrate the technical solution of the utility model rather than limit it
System；Although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should
Understand: specific implementation of the utility model can still be modified or is equally replaced to some technical characteristics
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (8)
1. a kind of net for air-source heat pump units of continuous heat supply, it is characterised in that: including compressor unit, indoor water heat exchange unit,
Quasi- two-stage compression unit, outdoor air heat exchange unit and defrosting branching unit；
The compressor unit includes sequentially connected gas-liquid separator (9), compressor (1), oil eliminator (2), bindiny mechanism
(3)；
The indoor water heat exchange unit includes the fluoro- water- to-water heat exchanger (6) being connected with the bindiny mechanism (3), and the fluoro- water changes
Hot device (6) is equipped with water out (15) and water inlet (16)；
The quasi- two-stage compression unit includes the plate heat exchanger (17) being connected with the fluoro- water- to-water heat exchanger (6), described board-like to change
Branch is equipped with heating circuit and quasi- two-stage compression circuit on hot device (17), the heating circuit directly with the plate heat exchanger
(17) it is connected and is equipped with check valve (8) in back segment, the quasi- two-stage compression circuit includes the quasi- second level being successively set on pipeline
Compress solenoid valve (19), quasi- two-stage compression electric expansion valve (18), plate heat exchanger (17), check valve (8) and finally with it is described
Compressor (1) is connected；
The outdoor air heat exchange unit includes the fluoro- air heat-exchange mechanism that at least two groups are arranged in parallel, the fluoro- air heat-exchange
Mechanism includes fluoro- air heat exchanger, the heating branch being arranged in parallel on the fluoro- air heat exchanger and defrosting branch and sets
The blower on the fluoro- air heat exchanger is set, the heating branch is equipped with shunting system thermoelectron expansion valve and check valve
(8), the defrosting branch is equipped with branch defrosting solenoid valve；
The defrosting branching unit includes the defrosting access being arranged between the oil eliminator (2) and bindiny mechanism (3), described
Defrosting solenoid valve (4), bidirectional guide mechanism (10), the defrosting solenoid valve (4) and bidirectional guide are successively arranged on defrosting access
Mechanism (10) return liquid side between branch be connected respectively with the defrosting branch, the tapping side of the bidirectional guide mechanism (10) and
Branch is connected with the heating branch respectively between bindiny mechanism (3).
2. net for air-source heat pump units according to claim 1, it is characterised in that: the bindiny mechanism (3) is four-way commutation
Valve.
3. net for air-source heat pump units according to claim 2, it is characterised in that: the indoor water heat exchange unit further includes setting
Set the refrigeration access between the fluoro- water- to-water heat exchanger (6) and bidirectional guide mechanism (10), the refrigeration access and the heating
Circuit is arranged in parallel, and the refrigeration access is equipped with cooling electronic expansion valve (7) and anti-with the check valve (8) on heating circuit
To the check valve (8) of setting.
4. net for air-source heat pump units according to claim 3, it is characterised in that: shunting system thermoelectron in each heating branch
The two sides of expansion valve and check valve (8) have been arranged in parallel refrigeration branch, and the refrigeration branch is equipped with to be heated with the branch
The oppositely arranged check valve (8) of the connected check valve (8) of electric expansion valve.
5. net for air-source heat pump units according to claim 1, it is characterised in that: the branch defrosting solenoid valve is arranged in institute
State the refrigeration working medium entrance side of the fluoro- air heat exchanger in defrosting branch, the system of the fluoro- air heat exchanger in the defrosting branch
Cold sender property outlet side is equipped with check valve (8).
6. net for air-source heat pump units according to claim 1, it is characterised in that: what is be connected with the defrosting branch two-way leads
The liquid back pipe road for flowing mechanism (10) is equipped with check valve (8) and hand stop valve (5).
7. net for air-source heat pump units according to claim 4, it is characterised in that: the bidirectional guide mechanism (10) goes out liquid
Side be equipped with check valve (8), and the tapping side of the bidirectional guide mechanism (10) and return liquid side between it is in parallel be equipped with freeze access,
The refrigeration access is equipped with check valve (8).
8. net for air-source heat pump units according to claim 1, it is characterised in that: the outdoor air heat exchange unit includes 4
~12 groups of fluoro- air heat-exchange mechanisms being arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820476877.1U CN208254017U (en) | 2018-04-04 | 2018-04-04 | A kind of net for air-source heat pump units of continuous heat supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820476877.1U CN208254017U (en) | 2018-04-04 | 2018-04-04 | A kind of net for air-source heat pump units of continuous heat supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208254017U true CN208254017U (en) | 2018-12-18 |
Family
ID=64638382
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820476877.1U Active CN208254017U (en) | 2018-04-04 | 2018-04-04 | A kind of net for air-source heat pump units of continuous heat supply |
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| Country | Link |
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| CN (1) | CN208254017U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387033A (en) * | 2018-04-04 | 2018-08-10 | 北京卡林新能源技术有限公司 | A kind of net for air-source heat pump units of continuous heat supply |
-
2018
- 2018-04-04 CN CN201820476877.1U patent/CN208254017U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387033A (en) * | 2018-04-04 | 2018-08-10 | 北京卡林新能源技术有限公司 | A kind of net for air-source heat pump units of continuous heat supply |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20200506 Address after: 061758 floor 3-4, No.8 Xinghe Road, Cangzhou Economic Development Zone, Cangzhou City, Hebei Province Patentee after: Carlin Heat Pump Technology Co., Ltd Address before: 100082, 5 floor 11, 1 Street, ten Street, Haidian District, Beijing. Patentee before: BEIJING KCALIN NEW ENERGY TECHNOLOGY Co.,Ltd. |