CN208222903U - A kind of DC frequency-changing trilogy supply heat pump - Google Patents
A kind of DC frequency-changing trilogy supply heat pump Download PDFInfo
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- CN208222903U CN208222903U CN201820254788.2U CN201820254788U CN208222903U CN 208222903 U CN208222903 U CN 208222903U CN 201820254788 U CN201820254788 U CN 201820254788U CN 208222903 U CN208222903 U CN 208222903U
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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
Abstract
The utility model proposes a kind of DC frequency-changing trilogy supply heat pump, including compressor assembly, user side component, outdoor heat exchanger, main solenoid valve and four-way valve, the user side component include the heat exchanger of user side.The utility model is directed to the quantitative design of the user side heat exchanger heat pump system of two kinds of different structures; it may be implemented preferentially to meet domestic hot-water's demand; and heating or refrigeration mode can be steadily switched to after quickly meeting the needs of domestic hot-water; by the pressure of inspiration(Pi) for detecting Compressor Group; it is scaled corresponding saturation evaporating temperature; the phenomenon that freezes occurred so as to heat exchanging general ability portion makes faster reaction, enables a system to more timely carry out anti-frost protection；Meanwhile the height pressure difference by detecting Compressor Group, the unlatching of solenoid valve is controlled, to be rapidly achieved pressure balance, and is protected by setting oil return, guarantees the lubricant effect of compressor internal part, to realize the protection to compressor.
Description
Technical field
The utility model relates to art of heat pumps, especially design a kind of DC frequency-changing trilogy supply heat pump.
Background technique
With the economic rapid growth in China, items construction obtains great achievement, but has also paid huge resource and environment
Cost has a large population that in contrast situation is severeer in the energy and blowdown flow rate due to China, meanwhile, greenhouse gas emission causes
Global warming, by international community's extensive concern.China implemented " energy-saving and emission-reduction " this measure in recent years, to reduce energy
Source waste and drop low exhaust gas emission.Air-source or water source, ground source heat pump technology are a kind of utilization air energy or water energys, geothermal
The energy-efficient air-conditioning technical that can not only warm oneself but also can freeze with hot water preparing of energy.
When current existing trilogy supply heat pump has refrigerating/heating demand and domestic hot-water's demand at the same time, need frequent
Switch mode causes the response time long, or even four-way Vavle switching occur unsuccessful, can not work normally so as to cause system；Together
When, in low-temperature heating or larger domestic hot-water's demand, also it is easy to generate disorderly closedown.
In addition, in the control of existing trigeneration heat pump system, generally by the way of monitoring leaving water temperature, this mode meeting
There are certain delays, are unable to get real-time parameter, so that controller is unable to accurately control system, it is outdoor so as to cause occurring
Anti-frost protection loses effectiveness under specific circumstances for heat exchanger or user side heat exchanger.
Summary of the invention
In order to solve the above problems, the utility model proposes a kind of DC frequency-changing trilogy supply heat pump, preferential guarantee life heat
Under the premise of water demand, stabilization is switched to refrigeration or heating mode after domestic hot-water's demand is rapidly completed, and reduces the frequent of system
Start and stop, meanwhile, oil return protection guarantee DC frequency-changeable compressor inside oil level is set always in safe range, and can provide in time
Anti-frost protection.
The main contents of the utility model include:
A kind of DC frequency-changing trilogy supply heat pump, including compressor assembly, user side component, outdoor heat exchanger and main solenoid valve
And four-way valve, the compressor assembly include Compressor Group, oil eliminator and gas-liquid separator, the Compressor Group packet
Invariable frequency compressor and frequency-changeable compressor in parallel are included, the user side component includes user side heat exchanger unit, domestic hot-water's water
Case and cooling/heating water tank, the four-way valve include import a, first interface b, second interface c and third interface d；The compressor
The exhaust outlet of unit is connect with the import of the oil eliminator, and the oil eliminator passes through oil return line and the Compressor Group
Air entry connection；The oil eliminator is through the four-way valve and the outdoor heat exchanger, main solenoid valve, the user side component
And the gas-liquid separator connection, the gas-liquid separator are connect with the air entry of the Compressor Group；The compressor
Unit also passes through oil return solenoid valve and connect with the gas-liquid separator, and the invariable frequency compressor is determined frequency oil return branch and described time
Solenoid connection, the frequency-changeable compressor are connect through frequency conversion oil return branch with the oil return solenoid valve；It is described to determine frequency oil return branch
Road includes determining frequency check valve and determining frequency capillary, and the frequency conversion oil return branch includes frequency conversion check valve and frequency conversion capillary；It is described
The gas outlet of Compressor Group is disposed with exhaust gas temperature sensor, high pressure sensor and high-voltage switch gear, the frequency conversion compression
The air entry of machine is disposed with low pressure sensor, suction temperature sensor and low tension switch.
Preferably, the first interface b of the four-way valve is connect with the Single port of the outdoor heat exchanger, the outdoor heat exchange
The another port of device is connect through the main solenoid valve with the Single port of the user side heat exchanger unit, the user side heat exchanger
The another port of unit is connect with the second interface c of the four-way valve, and the third interface d of the four-way valve is through the gas-liquid separation
Device is connect with the air entry of the Compressor Group；The user side heat exchanger unit includes user side heat exchanger and triple valve,
The water inlet of the user side heat exchanger is connect with the outlet A of the triple valve, and the triple valve includes first interface B and second
Interface C, the first interface B of the triple valve are connect with the water outlet of domestic hot-water's water tank, and the second of the triple valve connects
Mouth C is connect with the water outlet of the cooling/heating water tank；The water return outlet of domestic hot-water's water tank and cooling/heating water tank warp
Water return pipeline is connect with the water return outlet of the user side heat exchanger.
Preferably, inflow temperature sensor is provided between the user side heat exchanger and the triple valve；The return water
Return water temperature sensor, return water water pump and return water water flow switch are disposed on pipeline.
Preferably, the return water water pump is variable frequency pump.
Preferably, the user side heat exchanger unit includes domestic hot-water's heat exchanger and cooling/heating heat exchanger, the oil
It is connect from device with the Single port of domestic hot-water's heat exchanger, the another port of domestic hot-water's heat exchanger and the four-way valve
Import a connection, the first interface b of the four-way valve connects through the air entry of the gas-liquid separator and the Compressor Group
It connects, the second interface c of the four-way valve is connect with the Single port of the outdoor heat exchanger, the another port of the outdoor heat exchanger
It is connect through the main solenoid valve with the Single port of the cooling/heating heat exchanger, the another port of the cooling/heating heat exchanger and institute
State the third interface d connection of four-way valve.
Preferably, the water inlet of domestic hot-water's heat exchanger is connect with the water outlet of domestic hot-water's water tank, described
The water return outlet of domestic hot-water's water tank is connect through the first water return pipeline with the water outlet of domestic hot-water's heat exchanger, and described first time
The first return water temperature sensor, the first return water water pump and the first return water water flow switch are disposed in water lines.
Preferably, the water inlet of the cooling/heating heat exchanger is connect with the water outlet of the cooling/heating water tank, the system
The water return outlet of cold heat water tank is connect through the second water return pipeline with the water outlet of the cooling/heating heat exchanger, second return pipe
Road is disposed with the second return water temperature sensor, the second return water water pump and the second return water water flow switch, the cooling/heating and changes
The second inflow temperature sensor is provided between the water inlet of hot device and the water outlet of the cooling/heating water tank.
Preferably, it is provided with the first temperature sensor in domestic hot-water's water tank, is provided in the cooling/heating water tank
Second temperature sensor.
Preferably, the oil return line includes determining frequency oil return branch and frequency conversion oil return branch, and the oil eliminator passes through institute
State and determine frequency oil return branch and connect with the air entry of the invariable frequency compressor, the oil eliminator by the frequency conversion oil return branch with
The air entry of the frequency-changeable compressor connects.
Preferably, described to determine frequency oil return branch road and be provided with the first oil return capillary, the frequency conversion oil return branch road is arranged
There is the second oil return capillary.
The utility model has the beneficial effects that: the utility model proposes DC frequency-changing trilogy supply heat pump, can be preferential
Guarantee the demand of domestic hot-water, and can steadily be switched to heating or refrigeration mode after quickly meeting the needs of domestic hot-water,
By detecting the pressure of inspiration(Pi) of Compressor Group, it is scaled corresponding saturation evaporating temperature, so as to heat exchanging general ability portion hair
The raw phenomenon that freezes makes faster reaction, enables a system to more timely carry out anti-frost protection；Meanwhile it being compressed by detection
The height pressure difference of machine unit, controls the unlatching of solenoid valve, to be rapidly achieved pressure balance, and is protected, is guaranteed by setting oil return
The lubricant effect of compressor internal part, to realize the protection to compressor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment one；
Fig. 2 is the structural schematic diagram of the utility model embodiment two.
Specific embodiment
The technical solution protected below in conjunction with attached drawing to the utility model illustrates.
Please refer to Fig. 1 and Fig. 2.The utility model proposes a kind of DC frequency-changing trilogy supply heat pump, including compressor assembly,
User side component, outdoor heat exchanger 20 and main solenoid valve 30 and four-way valve 50.
Wherein, the compressor assembly includes Compressor Group, oil eliminator 103 and gas-liquid separator 104, the compression
Machine unit includes invariable frequency compressor 101 and frequency-changeable compressor 102 in parallel；The exhaust outlet of the Compressor Group and the oil
Import connection from device 103, the in one of the embodiments, exhaust outlet of the invariable frequency compressor 101 and frequency conversion compression
The exhaust outlet of machine 102 is respectively arranged with check valve；And the pipeline between the Compressor Group and the oil eliminator 103
On, i.e., exhaust gas temperature sensor 117, high pressure sensor 118 are disposed in the exhaust ports setting of the Compressor Group
With high-voltage switch gear 110；Low pressure sensor 112, suction temperature are disposed in the air entry of the frequency-changeable compressor 102 simultaneously
Sensor 119 and low tension switch 111；The oil eliminator 103 is connected by oil return line and the air entry of the Compressor Group
It connects, the oil return line includes determining frequency oil return branch and frequency conversion oil return branch, the oil eliminator in one of the embodiments,
Determine frequency oil return branch by described and connect with the air entry of the invariable frequency compressor 101, the oil eliminator passes through the frequency conversion
Oil return branch is connect with the air entry of the frequency-changeable compressor, it is described determine frequency oil return branch include the first oil return capillary 114, institute
Stating frequency conversion oil return branch includes the second oil return capillary 116.
Oil return solenoid valve 105 is arranged in the exhaust outlet of Compressor Group in the utility model, uses in invariable frequency compressor booting
Make oil return.
Low pressure sensor 112 is arranged in the air entry of Compressor Group in the utility model, and in the exhaust of Compressor Group
Mouth setting high pressure sensor 118, using the high sensitivity of pressure sensor in the characteristic of temperature sensor, is changed by pressure of inspiration(Pi)
The saturation evaporating temperature for calculating user side, the saturation condensation temperature of hot/cold source is conversed by pressure at expulsion, prevents user side
Heat exchanger occur due to there are problems that freezing that anti-frost protection can not work under specific circumstances, compensate for using going out water temperature
The defect of the detection methods such as degree.
Wherein, the user side component includes user side heat exchanger unit, domestic hot-water's water tank and cooling/heating water tank, institute
It states and is provided with the first temperature sensor 44 in domestic hot-water's water tank, be provided with second temperature sensor in the cooling/heating water tank.
In addition, the outdoor heat exchanger can be air-source or water source heat exchanger, it is described in one of the embodiments,
Cold/heat source is water source, and the water source side is provided with inflow temperature sensor, for monitoring outdoor temperature, is set in water source side
It is equipped with water land source side water pump and water flow switch；When water flow switch monitors water flow lower than setting value, which can be issued
Alarm.
Embodiment one
Please refer to Fig. 1.In the present embodiment, the four-way valve 50 includes import a, first interface b, second interface c and the
Three interface d, the Compressor Group is connect by the outlet of the oil eliminator 103 with the import a of the four-way valve 50, described
The first interface b of four-way valve is connect with the Single port of the outdoor heat exchanger 20, the another port warp of the outdoor heat exchanger 20
The main solenoid valve 30 is connect with the port of the user side heat exchanger unit, the another port of the user side heat exchanger unit
It is connect with the second interface c of the four-way valve 50, the third interface d of the four-way valve 50 is through the gas-liquid separator 104 and institute
State the air entry connection of Compressor Group.
The user side heat exchanger unit includes user side heat exchanger 40 and triple valve 41, the user side heat exchanger 40
Water inlet is connect with the outlet A of the triple valve 41, and the triple valve 41 includes first interface B and second interface C, the threeway
The first interface B of valve is connect with the water outlet of domestic hot-water's water tank 42, the second interface C of the triple valve and the refrigeration
The water outlet of/boiler 43 connects, and the water return outlet of domestic hot-water's water tank 42 and the cooling/heating water tank 43 is through the return water
Pipeline is connect with the water return outlet of the user side heat exchanger 40；Wherein, return water temperature biography is disposed on the water return pipeline
Sensor 402, return water water pump 403 and return water water flow switch 404, and between the user side heat exchanger 40 and the triple valve 41
Pipeline on be provided with inflow temperature sensor 401；The return water water pump 403 is variable frequency pump in one of the embodiments,.
In the present embodiment, under domestic hot-water's mode refrigerant flow direction are as follows: Compressor Group → four-way valve import a → tetra-
Port valve second interface c → user side heat exchanger → main solenoid valve → outdoor heat exchanger → four-way valve first interface b → four-way valve
Three interface d → Compressor Group.
Wherein, in user side component, the water pump of the user side component is opened, and the water in domestic hot-water's water tank flows through institute
The first interface B for stating triple valve enters the user side heat exchanger by the threeway valve outlet A, and the water after being heated flows through
The water return pipeline is back to domestic hot-water's water tank.
In the present embodiment, under refrigeration mode refrigerant flow direction are as follows: plasticator unit → four-way valve import a → four-way valve
First outlet b → outdoor heat exchanger → main solenoid valve → user side heat exchanger → four-way valve second interface c → four-way valve third connects
Mouth d → Compressor Group.
Wherein, in user side component, the return water water pump is opened, and the water in cooling/heating water tank flows through the triple valve
Second interface C, enter user side heat exchanger by the outlet A of the triple valve, water after cooling flows through the return pipe
Road is back to the user side heat exchanger.
In the present embodiment, under heating mode refrigerant flow direction are as follows: Compressor Group → four-way valve import a → four-way valve
Second interface c → user side heat exchanger → main solenoid valve → outdoor heat exchanger → four-way valve first interface b → four-way valve third connects
Mouth d → Compressor Group.
Wherein, in user side component, the return water water pump is opened, and the water in cooling/heating water tank flows through the triple valve
Second interface C, enter user side heat exchanger by the outlet A of the triple valve, the water after being heated flows through the return pipe
Road is back to the user side heat exchanger.
In the present embodiment, the controller in heat pump system receives the demand of domestic hot-water, preferably satisfies domestic hot-water's
Demand through triple valve after the demand for completing domestic hot-water, quickly switches to heating when there is the demand of heating or refrigeration
Or refrigeration mode；Simultaneously the inflow temperature in monitoring user-side component and return water temperature and domestic hot-water's water tank and refrigeration/
Temperature in boiler prevents user side heat exchanger from occurring overheating or being subcooled problem.
Embodiment two
Please refer to Fig. 2.In the present embodiment, the four-way valve 50 includes import a, first interface b, second interface c and the
Three interface d, the user side heat exchanger unit include domestic hot-water's heat exchanger 51 and cooling/heating heat exchanger 52, the oil separation
The outlet of device 103 is connected through domestic hot-water's heat exchanger with the import a of the four-way valve 50, the first interface of the four-way valve
B is connect through the gas-liquid separator with the air entry of the Compressor Group；The second interface c of the four-way valve and the outdoor
Heat exchanger 20 connects, and the outdoor heat exchanger 20 is connected by the main solenoid valve 30 with the cooling/heating heat exchanger 52, institute
Another port for stating cooling/heating heat exchanger 52 is connect with the third interface d of the four-way valve.
The water outlet of domestic hot-water's heat exchanger 51 is connect with the water inlet of domestic hot-water's water tank 510, the life
The water return outlet of hot water 510 living is connect through first water return pipeline with the water inlet of domestic hot-water's heat exchanger 51, institute
It states and is disposed with the first return water temperature sensor 512, the first return water water pump 513 and the first return water water flow on the first water return pipeline
Switch 514.
The water outlet of the cooling/heating heat exchanger 52 is connect with the water inlet of the cooling/heating water tank 520, and the refrigeration/
The water return outlet of boiler 520 is connect through the second water return pipeline with the water inlet of the cooling/heating heat exchanger 52, second return water
The second return water temperature sensor 522, the second return water water pump 523 and the second return water water flow switch are disposed on pipeline, it is described
The second inflow temperature biography is provided between the water outlet of cooling/heating heat exchanger 52 and the water inlet of the cooling/heating water tank 520
Sensor 521.
In the present embodiment, under domestic hot-water's mode refrigerant flow direction are as follows: Compressor Group → domestic hot-water's heat exchanger
→ four-way valve import a → four-way valve second interface c → outdoor heat exchanger → main solenoid valve → cooling/heating heat exchanger → four-way valve
Three interface d → four-way valve first interface b → Compressor Group.
Wherein, the water pump of domestic hot-water's water tank is opened, and the water flow in domestic hot-water's water tank exchanges heat into the domestic hot-water
Device, the water after being heated flow through first water return pipeline and are back to domestic hot-water's water tank.
In the present embodiment, under refrigeration mode refrigerant flow direction are as follows: Compressor Group → domestic hot-water heat exchanger → tetra-
Port valve import a → four-way valve second interface c → outdoor heat exchanger → main solenoid valve → cooling/heating heat exchanger → four-way valve third connects
Mouth d → four-way valve first interface b → Compressor Group.
Wherein, the water pump of domestic hot-water's water tank is closed, and the water pump of cooling/heating water tank is opened, and the water of cooling/heating water tank flows into
After entering the cooling/heating heat exchanger, water after cooling flows through second return line and is back to cooling/heating water tank.
In the present embodiment, under heating mode refrigerant flow direction are as follows: Compressor Group → domestic hot-water heat exchanger → tetra-
Port valve import a → four-way valve third interface d → cooling/heating heat exchanger → main solenoid valve → outdoor heat exchanger → four-way valve second connects
Mouth c → four-way valve first interface b → compressor set.
Wherein, the water pump of domestic hot-water's water tank can be opened or be closed, and the water pump of cooling/heating water tank is opened, full
After the demand of sufficient domestic hot-water, the supply of domestic hot-water can be closed by closing the first return water water pump；In cooling/heating water tank
Water flow enters cooling/heating heat exchanger, and the water after being heated flows through second water return pipeline and is back to the cooling/heating water tank.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (10)
1. a kind of DC frequency-changing trilogy supply heat pump, which is characterized in that including compressor assembly, user side component, outdoor heat exchanger
With main solenoid valve and four-way valve, the compressor assembly includes Compressor Group, oil eliminator and gas-liquid separator, the pressure
Contracting machine unit includes in parallel invariable frequency compressor and frequency-changeable compressor, the user side component include user side heat exchanger unit,
Domestic hot-water's water tank and cooling/heating water tank, the four-way valve include import a, first interface b, second interface c and third interface d；
The exhaust outlet of the Compressor Group is connect with the import of the oil eliminator, the oil eliminator by oil return line with it is described
The air entry of Compressor Group connects；The oil eliminator is through the four-way valve, outdoor heat exchanger, main solenoid valve, described
User side component is connect with the gas-liquid separator, and the gas-liquid separator is connect with the air entry of the Compressor Group；Institute
It states Compressor Group and also passes through oil return solenoid valve and connect with the gas-liquid separator, the invariable frequency compressor is determined frequency oil return branch
It is connect with the oil return solenoid valve, the frequency-changeable compressor is connect through frequency conversion oil return branch with the oil return solenoid valve；It is described fixed
Frequency oil return branch includes determining frequency check valve and determining frequency capillary, and the frequency conversion oil return branch includes frequency conversion check valve and frequency conversion capillary
Pipe；The gas outlet of the Compressor Group is disposed with exhaust gas temperature sensor, high pressure sensor and high-voltage switch gear, the change
The air entry of frequency compressor is disposed with low pressure sensor, suction temperature sensor and low tension switch.
2. a kind of DC frequency-changing trilogy supply heat pump according to claim 1, which is characterized in that the first of the four-way valve connects
Mouthful b is connect with the Single port of the outdoor heat exchanger, the another port of the outdoor heat exchanger through the main solenoid valve with it is described
The Single port of user side heat exchanger unit connects, the another port of the user side heat exchanger unit and the second of the four-way valve
The third interface d of interface c connection, the four-way valve is connect through the gas-liquid separator with the air entry of the Compressor Group；
The user side heat exchanger unit includes user side heat exchanger and triple valve, the water inlet of the user side heat exchanger and described three
The outlet A connection of port valve, the triple valve include first interface B and second interface C, the first interface B of the triple valve and institute
State the water outlet connection of domestic hot-water's water tank, the water outlet company of the second interface C of the triple valve and the cooling/heating water tank
It connects；Time of the water return outlet of domestic hot-water's water tank and the cooling/heating water tank through water return pipeline and the user side heat exchanger
Mouth of a river connection.
3. a kind of DC frequency-changing trilogy supply heat pump according to claim 2, which is characterized in that the user side heat exchanger and
Inflow temperature sensor is provided between the triple valve；It is disposed with return water temperature sensor on the water return pipeline, returns
Water water pump and return water water flow switch.
4. a kind of DC frequency-changing trilogy supply heat pump according to claim 3, which is characterized in that the return water water pump is frequency conversion
Water pump.
5. a kind of DC frequency-changing trilogy supply heat pump according to claim 1, which is characterized in that the user side heat exchanger machine
Group includes domestic hot-water's heat exchanger and cooling/heating heat exchanger, the Single port of the oil eliminator and domestic hot-water's heat exchanger
Connection, the another port of domestic hot-water's heat exchanger are connect with the import a of the four-way valve, the first interface of the four-way valve
B is connect through the gas-liquid separator with the air entry of the Compressor Group, the second interface c of the four-way valve and the outdoor
The Single port of heat exchanger connects, and the another port of the outdoor heat exchanger is through the main solenoid valve and the cooling/heating heat exchanger
Single port connection, the another port of the cooling/heating heat exchanger is connect with the third interface d of the four-way valve.
6. a kind of DC frequency-changing trilogy supply heat pump according to claim 5, which is characterized in that domestic hot-water's heat exchanger
Water inlet connect with the water outlet of domestic hot-water's water tank, the water return outlet of domestic hot-water's water tank is through the first water return pipeline
It is connect with the water outlet of domestic hot-water's heat exchanger, the first return water temperature sensing is disposed on first water return pipeline
Device, the first return water water pump and the first return water water flow switch.
7. a kind of DC frequency-changing trilogy supply heat pump according to claim 5, which is characterized in that the cooling/heating heat exchanger
Water inlet connect with the water outlet of the cooling/heating water tank, the water return outlet of the cooling/heating water tank through the second water return pipeline with
The water outlet of the cooling/heating heat exchanger connects, be disposed on second water return pipeline the second return water temperature sensor,
Second return water water pump and the second return water water flow switch, the water inlet of the cooling/heating heat exchanger and the cooling/heating water tank go out
The second inflow temperature sensor is provided between the mouth of a river.
8. according to a kind of any DC frequency-changing trilogy supply heat pump of claim 2 to 7, which is characterized in that the life heat
It is provided with the first temperature sensor in water tank, is provided with second temperature sensor in the cooling/heating water tank.
9. a kind of DC frequency-changing trilogy supply heat pump according to claim 1, which is characterized in that the oil return line includes fixed
Frequency oil return branch and frequency conversion oil return branch, the oil eliminator pass through the suction for determining frequency oil return branch Yu the invariable frequency compressor
Port connection, the oil eliminator are connect by the frequency conversion oil return branch with the air entry of the frequency-changeable compressor.
10. a kind of DC frequency-changing trilogy supply heat pump according to claim 9, which is characterized in that described to determine frequency oil return branch
On be provided with the first oil return capillary, the frequency conversion oil return branch road is provided with the second oil return capillary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254788.2U CN208222903U (en) | 2018-02-12 | 2018-02-12 | A kind of DC frequency-changing trilogy supply heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254788.2U CN208222903U (en) | 2018-02-12 | 2018-02-12 | A kind of DC frequency-changing trilogy supply heat pump |
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| Publication Number | Publication Date |
|---|---|
| CN208222903U true CN208222903U (en) | 2018-12-11 |
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ID=64530311
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820254788.2U Active CN208222903U (en) | 2018-02-12 | 2018-02-12 | A kind of DC frequency-changing trilogy supply heat pump |
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| CN (1) | CN208222903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117441668A (en) * | 2023-11-20 | 2024-01-26 | 佛山市海鸿冷暖设备有限公司 | Multi-cylinder aquaculture constant temperature system capable of controlling temperature in cold and warm mode respectively |
-
2018
- 2018-02-12 CN CN201820254788.2U patent/CN208222903U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117441668A (en) * | 2023-11-20 | 2024-01-26 | 佛山市海鸿冷暖设备有限公司 | Multi-cylinder aquaculture constant temperature system capable of controlling temperature in cold and warm mode respectively |
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