CN205843116U - A kind of low ring temperature interval defrosting heat pump unit - Google Patents
A kind of low ring temperature interval defrosting heat pump unit Download PDFInfo
- Publication number
- CN205843116U CN205843116U CN201620266520.1U CN201620266520U CN205843116U CN 205843116 U CN205843116 U CN 205843116U CN 201620266520 U CN201620266520 U CN 201620266520U CN 205843116 U CN205843116 U CN 205843116U
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- Prior art keywords
- source pump
- defrosting
- heat
- ring temperature
- pump unit
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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
This utility model relates to a kind of low ring temperature interval defrosting heat pump unit, including source pump, described source pump includes that compressor, four-way change-over valve, finned heat exchanger, electric expansion valve, water-side heat, reservoir and gas-liquid separator, described compressor, described four-way change-over valve, described finned heat exchanger, described electric expansion valve, described water-side heat, described reservoir and described gas-liquid separator are followed in series to form loop；The quantity of described source pump is at least two groups.The beneficial effects of the utility model are: low ring temperature described in the utility model interval defrosting heat pump unit includes that the quantity of source pump is at least two groups, it is achieved in that the interval defrosting of source pump, ensure that whole low ring temperature interval defrosting heat pump unit normally heats during defrosting, solve source pump not heat in defrosting, consume system thermal on the contrary, causing system water temperature fluctuation big, consumption of calorie is too many, causes heating and does not reaches the situation needing temperature.
Description
Technical field
This utility model relates to a kind of source pump, is specifically related to a kind of low ring temperature interval defrosting heat pump unit.
Background technology
Heat pump is a kind of machine worked for principle with inverse Carnot cycle, and only need to input a small amount of high-grade energy just can be from low
Temperature environment absorbs heat and releases the heat of several times to hot environment, and the function have refrigeration, heating has been widely used in house and has adopted
Warm, air-conditionings etc., are a kind of efficient firing equipments.But when using source pump in the environment of low temperature and high relative humidity, defrost is compared
The unit during this period of time that frequently defrosts does not heats, and consumes the heat of system on the contrary, causes system water temperature fluctuation big, meeting time serious
Unit is caused to heat the temperature not reaching needs.Meanwhile, the finned heat exchanger of source pump is applied in the environment of low temperature and high relative humidity
Time, a large amount of accumulated ice of (the namely bottom of finned heat exchanger) meeting on the water accumulating disc after defrosting, longtime running can make having of vaporizer
Effect heat exchange area reaches reduction, and severe patient likely can swarm in the pipeline of heat exchanger, causes refrigerating system coolant to be revealed.
Utility model content
In order to solve the problems referred to above that prior art exists, this utility model provides a kind of interval defrosting heat pump unit,
Can solve when current source pump defrosts in the environment of low temperature and high relative humidity, to affect icing bottom effect and defrosting finisher
Problem.
The technical scheme that this utility model is used is:
A kind of low ring temperature interval defrosting heat pump unit, including source pump, described source pump includes that compressor, four-way change
To valve, finned heat exchanger, electric expansion valve, water-side heat, reservoir, gas-liquid separator, described compressor, described four-way change
To valve, described finned heat exchanger, described electric expansion valve, described water-side heat, described reservoir and described gas-liquid separator
It is followed in series to form loop；The quantity of described source pump is at least two groups.Using source pump described in the utility model
When heating, regulation four-way change-over valve make compressor, four-way change-over valve, water-side heat, electric expansion valve, finned heat exchanger, four
Logical reversal valve and gas-liquid separator are sequentially connected with composition closed-loop path and heat, after being compressed by the low temperature coolant after heat absorption
Form high temperature and high pressure gas, swollen through electric expansion valve throttling after then carrying out heat exchange condensation in water-side heat and discharging heat
Enter finned heat exchanger after swollen, absorb after external heat, return to compressor, complete to heat circulation.And when described heat pump
When unit needs defrosting, regulate four-way change-over valve, make compressor, four-way change-over valve, finned heat exchanger, electric expansion valve, water side
Heat exchanger, four-way change-over valve, gas-liquid separator are sequentially connected with composition closed-loop path and defrost, the High Temperature High Pressure that compressor is discharged
(in finned heat exchanger, discharge heat can remove finned heat exchanger table after gas carries out condensing and discharging heat in finned heat exchanger
The frost that face is tied) through electric expansion valve throttling expansion laggard water inlet side heat exchanger, after absorbing the heat using end from user, return
To compressor, complete defrosting.Because the quantity of source pump described in the utility model is at least two groups, so one group of heat wherein
When pump assembly needs defrosting, another set source pump will not enter defrosting process, has been achieved in that between source pump and has excluded
Frost, when i.e. source pump is operated in the environment of low temperature and high relative humidity, when one group of source pump carries out Defrost operation, other
Compressor bank is still up heating, this ensure that whole low ring temperature interval defrosting heat pump unit during defrosting just
Often heat, solve source pump and do not heat in defrosting, consume system thermal on the contrary, cause system water temperature to fluctuate
Greatly, time serious, consumption of calorie is too many, causes heating and does not reaches the situation needing temperature.
Because the bottom of existing finned heat exchanger is fitted with drip tray panel beating, from finned heat exchanger, the water of defrost will be through
Cross panel beating just can drain, and water likely can freeze through panel beating, in the environment of low temperature and high relative humidity, the accumulated ice of exchanger base
Likely can get more and more, stop the air intake of heat exchanger so that the effective heat exchange area of vaporizer reduces, in some instances it may even be possible to can swarm in
The pipeline of heat exchanger.And the unsettled setting of finned heat exchanger described in the utility model, metal plate is only used at the two ends of finned heat exchanger
Gold is fixed, and the water of such defrost can directly be drained, and fundamentally solves the problem of accumulated ice bottom finned heat exchanger.
Further, described electric expansion valve is bidirectional electronic expansion valve.Because low ring temperature described in the utility model is spaced
Defrosting heat pump unit needs to change back and forth between defrosting system and heating, if using unidirectional expansion during using
Valve control system, the welding that can cause pipeline is more complicated, and cost is higher.Use bidirectional electronic expansion valve, operation letter
List, pipeline are succinct.
Further, described reservoir is single port reservoir.The installation site of reservoir is changed at electric expansion valve and water side
Between hot device, single port reservoir reduces by a soldering opening relative to twoport reservoir, and reduces coolant injection amount, saves sky
Between.Twoport reservoir is when properly functioning, and the inside of reservoir needs to store the coolant of major part liquid, and single port reservoir exists
When unit is properly functioning, inside has only to store small part coolant, correspondingly reduces the charging amount of system coolant, it is to avoid double
Mouth reservoir, in the pressure drop of low-pressure side, improves the efficiency of unit.
Further, the quantity of described source pump is four groups, and source pump described in four groups shares a water-side heat.
Because of when in use, when one of which source pump needs to defrost, another set source pump heats, and i.e. protects
Demonstrate,prove low ring temperature described in the utility model interval defrosting heat pump unit can heat normally during defrosting.
Further, described source pump is connected with Self-balance Control System electric wire.Self-balance Control System can be automatic
Detect the operation time of every compressor, the defrosting of source pump described in control and between heating alternately, Self-balance Control System
The every compressor making unit runs time equalization, extends the service life of unit.
Further, described source pump also includes blower fan, and described assembling is on the top of described finned heat exchanger.
The beneficial effects of the utility model are: low ring temperature described in the utility model interval defrosting heat pump unit includes heat pump
The quantity of unit is at least two groups, has been achieved in that the interval defrosting of source pump, and i.e. source pump is at the environment of low temperature and high relative humidity
In when being operated, when one group of source pump carries out Defrost operation, other compressor bank is still up heating,
Ensure that whole low ring temperature interval defrosting heat pump unit normally heats during defrosting, solve source pump when defrosting this section
Between do not heat, consume system thermal on the contrary, cause system water temperature fluctuation big, time serious, consumption of calorie is too many, causes heating and reaches not
To the situation needing temperature.And the operation time often organizing source pump is controlled by self-balancing system, so equalize and often organized heat
The operation time of pump assembly, extend the service life of unit.
Electric expansion valve described in the utility model is bidirectional electronic expansion valve.Use bidirectional electronic expansion valve, operation letter
Single, pipeline succinctly, and reduces cost.
Reservoir described in the utility model is single port reservoir.Single port reservoir is when unit is properly functioning, and internal needs
Small part coolant to be stored, correspondingly reduces the charging amount of system coolant, it is to avoid the twoport reservoir pressure drop in low-pressure side,
Improve the efficiency of unit.
Accompanying drawing explanation
Fig. 1 is the structural representation of low ring temperature described in the utility model interval defrosting heat pump unit.
In figure: 1, compressor；2, four-way change-over valve；3, finned heat exchanger；4, electric expansion valve；5, water-side heat；6、
Reservoir；7, gas-liquid separator；8, blower fan.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below will be to technology of the present utility model
Scheme is described in detail.Obviously, described embodiment is only a part of embodiment of this utility model rather than all
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not before making creative work
Put obtained other embodiments all, broadly fall into the scope that this utility model is protected.
As shown in Figure 1: a kind of low ring temperature interval defrosting heat pump unit, including source pump, described source pump includes pressure
Contracting machine 1, four-way change-over valve 2, finned heat exchanger 3, electric expansion valve, water-side heat 5, reservoir, gas-liquid separator 7, described
Compressor 1, described four-way change-over valve 2, described finned heat exchanger 3, described electric expansion valve 4, described water-side heat 5, described
Reservoir 6 and described gas-liquid separator 7 are followed in series to form loop；The quantity of described source pump is at least two groups.Using
When source pump described in the utility model heats, regulation four-way change-over valve 2 makes compressor 1, four-way change-over valve 2, the heat exchange of water side
Device 5, electric expansion valve, finned heat exchanger 3, four-way change-over valve 2 and gas-liquid separator 7 are sequentially connected with composition closed-loop path system
Heat；And when described source pump needs defrosting, regulate four-way change-over valve 2, make compressor 1, four-way change-over valve 2, fin change
Hot device 3, electric expansion valve 4, water-side heat 5, four-way change-over valve 2, gas-liquid separator 7 are sequentially connected with composition closed-loop path to be carried out
Defrosting.As ratio more preferably scheme, the quantity of described source pump is four groups, and source pump described in four groups shares a water
Side heat exchanger 5, during so one group of source pump needs defrosting wherein, another set source pump heats, and is achieved in that
The interval defrosting of source pump, when i.e. source pump is operated in the environment of low temperature and high relative humidity, when one group of source pump is entered
During row Defrost operation, other compressor bank is still up heating, and this ensure that the defrosting of whole low ring temperature interval
Source pump normally heats during defrosting, and solves source pump and does not heats in defrosting, consumes system thermal on the contrary
Amount, causes system water temperature fluctuation big, and time serious, consumption of calorie is too many, causes heating and does not reaches the situation needing temperature.And this reality
It is spaced the defrosting of the source pump that defrosting heat pump unit is comprised by novel described low ring temperature or heats by self-balancing control
System is controlled, and Self-balance Control System can detect the operation time of every compressor 1, the heat pump machine described in control automatically
Replacing between organizing defrosting and heating.
For lowering cost, simplifying pipeline and make simple to operate, described electric expansion valve is bidirectional electronic expansion valve.For subtracting
Lacking coolant injection amount, save space, described reservoir is single port reservoir.Because twoport reservoir is when properly functioning, liquid storage
The inside of device needs to store the coolant of major part liquid, and single port reservoir is when unit is properly functioning, and inside has only to store less
Part coolant, correspondingly reduces the charging amount of system coolant, it is to avoid the twoport reservoir pressure drop in low-pressure side, improves machine
The efficiency of group.
Additionally, low ring temperature described in the utility model interval defrosting heat pump unit also includes that blower fan 8, described blower fan 8 are installed
Top at described finned heat exchanger 3.Play the effect forcing to dissipate wind.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model does not limit to
In this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in change
Or replace, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be wanted with right
The protection domain asked is as the criterion.
Claims (6)
1. one kind low ring temperature interval defrosting heat pump unit, it is characterised in that: include that source pump, described source pump include compression
Machine, four-way change-over valve, finned heat exchanger, electric expansion valve, water-side heat, reservoir and gas-liquid separator, described compressor,
Described four-way change-over valve, described finned heat exchanger, described expansion valve, described water-side heat, described reservoir and described gas-liquid
Separator is followed in series to form loop；The quantity of described source pump is at least two groups.
Low ring temperature the most according to claim 1 interval defrosting heat pump unit, it is characterised in that: described electric expansion valve is double
To electric expansion valve.
Low ring temperature the most according to claim 1 interval defrosting heat pump unit, it is characterised in that: described reservoir is single port storage
Liquid device.
Low ring temperature the most according to claim 1 interval defrosting heat pump unit, it is characterised in that: the quantity of described source pump
Being four groups, source pump described in four groups shares a water-side heat.
Low ring temperature the most according to claim 1 interval defrosting heat pump unit, it is characterised in that: described source pump is with the most flat
Weighing apparatus control system electric wire connects.
Low ring temperature the most according to claim 1 interval defrosting heat pump unit, it is characterised in that described source pump is also wrapped
Including blower fan, described assembling is on the top of described finned heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620266520.1U CN205843116U (en) | 2016-03-31 | 2016-03-31 | A kind of low ring temperature interval defrosting heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620266520.1U CN205843116U (en) | 2016-03-31 | 2016-03-31 | A kind of low ring temperature interval defrosting heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205843116U true CN205843116U (en) | 2016-12-28 |
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ID=57627221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620266520.1U Active CN205843116U (en) | 2016-03-31 | 2016-03-31 | A kind of low ring temperature interval defrosting heat pump unit |
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| Country | Link |
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| CN (1) | CN205843116U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642586A (en) * | 2016-12-29 | 2017-05-10 | 广东美的暖通设备有限公司 | Grading defrosting method and device for air cooled heat pump parallel-connection units |
-
2016
- 2016-03-31 CN CN201620266520.1U patent/CN205843116U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642586A (en) * | 2016-12-29 | 2017-05-10 | 广东美的暖通设备有限公司 | Grading defrosting method and device for air cooled heat pump parallel-connection units |
| CN106642586B (en) * | 2016-12-29 | 2019-09-17 | 广东美的暖通设备有限公司 | A kind of classification defrosting method and device for air-cooled heat pump Parallel sets |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |