CN207006618U - Heat pump - Google Patents
Heat pump Download PDFInfo
- Publication number
- CN207006618U CN207006618U CN201720680323.9U CN201720680323U CN207006618U CN 207006618 U CN207006618 U CN 207006618U CN 201720680323 U CN201720680323 U CN 201720680323U CN 207006618 U CN207006618 U CN 207006618U
- Authority
- CN
- China
- Prior art keywords
- compressor
- condenser
- heat pump
- low pressure
- flow channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model discloses a kind of heat pump, including：Compressor and condenser, the condenser include first flow and second flow channel；The compressor is connected with the first flow of the condenser to form heat pump circuit；The outlet of the compressor is connected by the second flow channel of the condenser with the entrance of the compressor.The utility model can be while compressor shutdown; by opening hot gas bypass circuit; after the refrigerant in compressor outlet pipeline is entered the second flow channel condensation of condenser; as liquid after gas-liquid separator mixes with low pressure refrigerant; the entrance of compressor is back to, thus can rapidly realize that high-low pressure balances, therefore; can Fast-Balance heat pump refrigeration system high-low pressure so that compressor can quickly start without pressure difference.
Description
Technical field
Air-conditioning technical field is the utility model is related to, in particular to a kind of heat pump.
Background technology
In refrigerating and air conditioning industry, hot-gas bypass technology is many times used to defrosting or adjusting evaporating temperature, but in number
On code screw compressor, mainly unloading acts on hot-gas bypass.In the prior art, most steam compression heat pump/refrigeration
Unit all need not specially carry out the Balance Treatment of high-low pressure when shutting down, when reason is mainly that unit in itself can be by one section
Between shutdown place and reach high-low pressure balance, this generally a few minutes i.e. can reach high-low pressure poised state, compressor is again
Startup with pressure will not start.
But when some extraordinary heat pump refrigeration equipments are used for thermostatic control, precision equipment requires very high to temperature fluctuation,
Do not allow the downtime of compressor clock in a measure, to need to be again started up quickly after compressor shutdown.At this time, system
High-low pressure is also not reaching to poised state, and pressure difference is bigger, and compressor start is just extremely difficult, often results in the protection of controller
Cause to start and fail.
The common restricting element in this area includes throttle capillary tube, heating power expansion valve and electric expansion valve, and still, these are normal
Rule restricting element is unable to reach the effect of Fast-Balance high-low pressure.Therefore, can on these restricting elements a magnetic valve in parallel
To realize Fast-Balance high-low pressure, but because reversely leakage often occurs in magnetic valve or can not completely close, this can be caused
The reduction of systematic function.For example, after compressor shutdown, the high-low pressure on system pipeline can not pass through (the compression of compressor UNICOM
Machine plays cut-off valve action).Wherein, it is low pressure line with the pipeline of compressor air suction mouth UNICOM, with exhaust outlet of compressor UNICOM
Pipeline be pressure duct, on pressure duct refrigerant can only (electric expansion valve, capillary, heating power be swollen by restricting element
Swollen valve etc.) slowly flow on low pressure line, pressure balance is realized with this.Because these restricting element bores are too small, with height
The pressure difference of low pressure tapers into, and by the refrigerant flow of restricting element aperture with regard to less and less, balancing speed is just slower.
Utility model content
A kind of heat pump is provided in the utility model embodiment, to solve to be unable to reach Fast-Balance height in the prior art
The problem of low pressure.
To achieve the above object, the utility model embodiment provides a kind of heat pump, including：Compressor and condenser,
The condenser includes first flow and second flow channel；The compressor is connected with the first flow of the condenser to form heat
Pump loop；The outlet of the compressor is connected by the second flow channel of the condenser with the entrance of the compressor.
Preferably, the heat pump also includes four-way valve, expansion valve 7, evaporator and gas-liquid separator；The compression
The outlet of machine passes sequentially through the first group interface of the four-way valve, first flow of the condenser, the expansion valve 7, described
It is connected after evaporator, the second group interface of the four-way valve and the gas-liquid separator with the entrance of the compressor.
Preferably, the second that the pipeline between the outlet of the compressor and the four-way valve passes through the condenser
Road is connected with the entrance of the gas-liquid separator.
Preferably, set on pipeline between the second flow channel of the condenser and the entrance of the gas-liquid separator
There is magnetic valve.
Preferably, the second flow channel of the condenser is located at the bottommost of the condenser.
The utility model can make compressor outlet pipeline while compressor shutdown, by opening hot gas bypass circuit
In refrigerant enter condenser second flow channel condensation after, turn into liquid and mixed by gas-liquid separator with low pressure refrigerant
Afterwards, it is back to the entrance of compressor, thus can rapidly realizes that high-low pressure balances, therefore, can Fast-Balance heat pump
High-low pressure, so that compressor can quickly start without pressure difference.In addition, unloaded after shutting down after HTHP exhaust cooling liquid
To system low-voltage pipeline, excessive so as to avoid high-low pressure impact, HTHP is vented impact system low pressure when solving unloading
The problem of parts.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment.
Description of reference numerals：1st, compressor；2nd, condenser；3rd, four-way valve；4th, evaporator；5th, gas-liquid separator；6th, electromagnetism
Valve；7th, expansion valve.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but not as to this practicality
New restriction.
Fig. 1 is refer to, the utility model embodiment provides a kind of heat pump, including：Compressor 1 and condenser 2, it is described
Condenser 2 includes first flow and second flow channel；The compressor 1 is connected to form heat with the first flow of the condenser 2
Pump loop；The outlet of the compressor 1 is connected by the second flow channel of the condenser 2 with the entrance of the compressor 1.It is described
The exporting of compressor 1, the second flow channel of the condenser 2, the entrance of the compressor 1 may be constructed a hot-gas bypass and return
Road.
So, when unloading balance high-low pressure is shut down in refrigeration or heating, while compressor 1 is shut down, heat can be opened
Gas bypass circulation, therefore, after the refrigerant in the outlet conduit of compressor 1 enters the second flow channel condensation of condenser 2, turn into liquid
After gas-liquid separator mixes with low pressure refrigerant, the entrance of compressor 1 is back to, thus can rapidly realize high-low pressure
Balance, therefore, can Fast-Balance heat pump refrigeration system high-low pressure so that compressor can quickly start without pressure difference.
In addition, system low-voltage pipeline is unloaded to after HTHP exhaust cooling liquid after shutting down, so as to avoid high-low pressure
Impact excessive, solve the problems, such as during unloading that HTHP is vented impact system low pressure parts.
As illustrated in fig. 1, it is preferred that the heat pump also includes four-way valve 3, expansion valve 7, evaporator 4 and gas-liquid separation
Device 5；The outlet of the compressor 1 passes sequentially through the first group interface of the four-way valve 3, the first flow of the condenser 2, institute
State after the second group interface and the gas-liquid separator 5 of expansion valve 7, the evaporator 4, the four-way valve 3 with the compressor
1 entrance connection.More specifically, the pipeline between the outlet of the compressor 1 and the four-way valve 3 passes through the condenser 2
Second flow channel be connected with the entrance of the gas-liquid separator 5.In order to realize the break-make control to hot gas bypass circuit, preferably
Ground, magnetic valve 6 is provided with the pipeline between the second flow channel of the condenser 2 and the entrance of the gas-liquid separator 5.
It refer to Fig. 1, being exported between the D ends of four-way valve 3 to be connected with of compressor 1 is returned for the hot-gas bypass of unloading
Road, hot gas bypass circuit have four nodes, respectively P, Q, M and N, wherein, pipeline PQ is connected to the bottommost U of condenser 2 pipes
Import Q, the outlet M of the U pipes is connected to the import N of gas-liquid separator 5, an electromagnetism is equipped with PQMN connecting pipe
Valve 6.
Below, the course of work of the heat pump in utility model is described in detail with reference to Fig. 1.
When heat pump is in refrigeration mode, the flow path of refrigerant is：DC ends → condensation of compressor → four-way valve
ES ends → gas-liquid separator → compressor of device → expansion valve → evaporator → four-way valve.When refrigeration shuts down unloading balance high-low pressure
When, after compressor 1 is shut down, the outer general time-delay closing of blower fan, magnetic valve 6 is opened while compressor 1 is shut down, PQMN pipelines are (i.e.
Hot gas bypass circuit) on refrigerant condensation after, turn into liquid and mixed into gas-liquid separator 5 with low pressure refrigerant, quickly reality
Existing high-low pressure balance.
When heat pump is in heating mode, the flow path of refrigerant is：DE ends → evaporation of compressor → four-way valve
CS ends → gas-liquid separator → compressor of device → expansion valve → condenser → four-way valve.When unloading balance high-low pressure is shut down in heating
When, after compressor 1 is shut down, outer 3 general time-delay closing of blower fan and four-way valve, magnetic valve 6 is opened while compressor 1 is shut down,
After refrigerant condensation on PQMN pipelines (i.e. hot gas bypass circuit), turn into liquid and enter gas-liquid separator 5 and low pressure refrigerant
Mixing, quickly realize that high-low pressure balances.
Preferably, the second flow channel of the condenser 2 is located at the bottommost of the condenser 2.Now, using condenser
The U-tube of 2 bottommost forms the hot gas bypass circuit.When hot gas bypass circuit is arranged on into bottommost, it is more beneficial for
The defrosting ponding under low-temperature heating pattern is avoided to freeze.
The utility model can realize the effect of " short circuit " using the magnetic valve 6 set in hot gas bypass circuit：Compressing
After machine 1 is shut down, by controlling the unlatching of magnetic valve 6 (relative aperture restricting element is much bigger), pressure duct and low pressure line are realized
The quick UNICOM of interior refrigerant, so as to realize the Fast-Balance of high-low pressure, without waiting for the slow balance of restricting element.
Certainly, above is preferred embodiment of the present utility model.It should be pointed out that the ordinary skill for the art
For personnel, on the premise of the utility model general principle is not departed from, some improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also considered as with retouching.
Claims (5)
- A kind of 1. heat pump, it is characterised in that including：Compressor (1) and condenser (2), the condenser (2) include first Runner and second flow channel；The compressor (1) is connected to form heat pump circuit with the first flow of the condenser (2)；The outlet of the compressor (1) is connected by the second flow channel of the condenser (2) with the entrance of the compressor (1).
- 2. heat pump according to claim 1, it is characterised in that the heat pump also includes four-way valve (3), expansion Valve (7), evaporator (4) and gas-liquid separator (5)；The outlet of the compressor (1) passes sequentially through the first of the four-way valve (3) Group interface, the first flow of the condenser (2), the expansion valve (7), the evaporator (4), the of the four-way valve (3) The entrance of two group interfaces and the gas-liquid separator (5) afterwards with the compressor (1) is connected.
- 3. heat pump according to claim 2, it is characterised in that the outlet of the compressor (1) and the four-way valve (3) pipeline between is connected by the second flow channel of the condenser (2) with the entrance of the gas-liquid separator (5).
- 4. heat pump according to claim 3, it is characterised in that the condenser (2) second flow channel with it is described Magnetic valve (6) is provided with pipeline between the entrance of gas-liquid separator (5).
- 5. heat pump according to any one of claim 1 to 4, it is characterised in that the second of the condenser (2) Road is located at the bottommost of the condenser (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720680323.9U CN207006618U (en) | 2017-06-12 | 2017-06-12 | Heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720680323.9U CN207006618U (en) | 2017-06-12 | 2017-06-12 | Heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207006618U true CN207006618U (en) | 2018-02-13 |
Family
ID=61447183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720680323.9U Active CN207006618U (en) | 2017-06-12 | 2017-06-12 | Heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207006618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218742A (en) * | 2017-06-12 | 2017-09-29 | 珠海格力电器股份有限公司 | Heat pump and heat pump control method |
-
2017
- 2017-06-12 CN CN201720680323.9U patent/CN207006618U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218742A (en) * | 2017-06-12 | 2017-09-29 | 珠海格力电器股份有限公司 | Heat pump and heat pump control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103807917B (en) | Air-conditioner and the gas supply control method being applied to this air-conditioner | |
| CN107218742A (en) | Heat pump and heat pump control method | |
| CN107763776A (en) | Air-conditioner set and refrigerant migration control method | |
| WO2016192347A1 (en) | Light-load dehumidification and refrigeration method and device | |
| CN106196495A (en) | Control device, control method and the multi-gang air-conditioner of a kind of multi-gang air-conditioner | |
| CN106322603A (en) | Refrigeration-only air conditioner and control method thereof | |
| CN107860151A (en) | Heat pump and there is its air conditioner | |
| CN102889641A (en) | Air conditioner used in high-temperature environment and control method | |
| CN106801954B (en) | A kind of Gas-supplying enthalpy-increasing system and its control method, air conditioner | |
| CN108692478B (en) | The control method of air-conditioning system and air-conditioning system | |
| CN106642779A (en) | High-precision temperature and humidity control refrigerating system and method for laboratory | |
| CN106403373A (en) | Heat pump system, control method and refrigerating unit | |
| CN107421072A (en) | Air conditioner and its high temperature-proof control method | |
| CN108317760A (en) | Accurate temperature controlling refrigeration system | |
| CN105698420B (en) | A kind of compressor and air-conditioning system | |
| CN202973358U (en) | Air conditioner used in high-temperature environment | |
| CN106225291B (en) | Use the air-conditioner control system and air-conditioning of injector | |
| CN107166582A (en) | Air conditioning cooling water system, air-conditioning system and air conditioning cooling water system control method | |
| CN207006618U (en) | Heat pump | |
| CN207455816U (en) | Air-conditioner set | |
| CN105571076B (en) | A kind of control method of water-cooled multi-connected mechanism cold | |
| CN109915952A (en) | Unit is adjusted with 0 ~ 100% output load regulating power center air | |
| CN206556311U (en) | A kind of fluorine pump kind of refrigeration cycle assignment of traffic unit | |
| CN205825482U (en) | Air conditioning system | |
| CN208620676U (en) | The testing equipment of air injection enthalpy-increasing compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |