CN113357725A - Full frequency conversion duplex heat supply pump self-adaptation device and system - Google Patents
Full frequency conversion duplex heat supply pump self-adaptation device and system Download PDFInfo
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- CN113357725A CN113357725A CN202110668564.2A CN202110668564A CN113357725A CN 113357725 A CN113357725 A CN 113357725A CN 202110668564 A CN202110668564 A CN 202110668564A CN 113357725 A CN113357725 A CN 113357725A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 121
- 230000003044 adaptive effect Effects 0.000 claims description 7
- 239000003507 refrigerant Substances 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 12
- 230000009977 dual effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a full frequency conversion duplex heat supply pump self-adapting device and a system, wherein the device comprises: the air conditioner comprises a frequency conversion host, a frequency conversion water pump, a two-stage temperature difference transmitter, a flow transmitter and an air disc inner unit, wherein the frequency conversion host is sequentially connected with the frequency conversion water pump and the two-stage temperature difference transmitter through a water return pipe, the frequency conversion host is connected with the flow transmitter through a water outlet pipe, one end of the air disc inner unit is connected with the water return pipe, the other end of the air disc inner unit is connected with a water outlet pipe, and the air disc inner unit is installed indoors for room temperature adjustment. The invention solves the problems that the existing dual water supply machine water pump has high energy consumption, the compressor is controlled by the temperature of inlet water and return water, the matching accuracy is not high, and faults such as heat exchange and frost damage are easy to occur.
Description
Technical Field
The invention relates to the technical field of heat exchange, in particular to a full-variable-frequency duplex heat supply pump self-adaptive device and system.
Background
With the improvement of living standard and the development of science and technology of people, the heating in the market at present comprises wall-mounted furnace heating and electric physical heating. Because the current electric heating energy consumption is higher, the wall-mounted boiler is limited by gas from heating to winter, the use cost is higher than that of a duplex heat supply pump in the market, and the current heat pump is one of the best heating sources in the market. However, the water machine for double supply in the market basically adopts a fixed-frequency water pump, the fixed-frequency water pump is a fixed current and has fixed energy consumption, and the energy consumption of the water pump cannot be adjusted and changed because the indoor energy consumption is reduced, so that the energy consumption of the water pump cannot be effectively adjusted when the fixed-frequency water pump system is used, the frequency of a main machine is controlled by a variable-frequency fan and a variable-frequency compressor through the outlet water temperature and the return water temperature, and the system is unstable because the water flow is unstable and the matching accuracy is not high. And can result in greater energy consumption and waste.
Disclosure of Invention
Therefore, the invention provides a full-variable-frequency duplex heat supply pump self-adaption device and system, and aims to solve the problems that an existing duplex water supply machine water pump is high in energy consumption, a compressor is controlled by the temperature of inlet water and return water, the matching accuracy is not high, and faults such as heat exchange and frost damage are prone to occurring.
In order to achieve the above purpose, the invention provides the following technical scheme:
according to a first aspect of the invention, there is disclosed a full variable frequency bi-directional heat pump adaptive apparatus, the apparatus comprising: the air conditioner comprises a frequency conversion host, a frequency conversion water pump, a two-stage temperature difference transmitter, a flow transmitter and an air disc inner unit, wherein the frequency conversion host is sequentially connected with the frequency conversion water pump and the two-stage temperature difference transmitter through a water return pipe, the frequency conversion host is connected with the flow transmitter through a water outlet pipe, one end of the air disc inner unit is connected with the water return pipe, the other end of the air disc inner unit is connected with a water outlet pipe, and the air disc inner unit is installed indoors for room temperature adjustment.
Further, the frequency conversion host computer includes: the variable-frequency compressor is used for compressing a refrigerant to heat or refrigerate, the variable-frequency fan is used for helping the compressor to absorb or dissipate heat, the variable-frequency compressor is used for transmitting the generated heat to the heat exchanger, and two ends of the heat exchanger are respectively connected with the water return pipe and the water outlet pipe.
Furthermore, one end of the water return pipe is connected with the heat exchanger, the other end of the water return pipe is connected with the first hydraulic balancer, and the variable frequency water pump and the two-stage temperature difference transmitter are installed on the water return pipe between the heat exchanger and the first hydraulic balancer.
Furthermore, one end of the water outlet pipe is connected with the heat exchanger, the other end of the water outlet pipe is connected with the second hydraulic balancer, and the flow transmitter is arranged on the water outlet pipe between the heat exchanger and the second hydraulic balancer.
Further, a differential pressure bypass valve is installed between the first hydraulic balancer and the second hydraulic balancer, and balance is kept between the first hydraulic balancer and the second hydraulic balancer through the differential pressure bypass valve.
Furthermore, a plurality of air disc inner machines are arranged indoors and connected through an indoor linkage switch, one end of each air disc inner machine is connected with the first hydraulic balancer, and the other end of each air disc inner machine is connected with the second hydraulic balancer.
According to a second aspect of the invention, a full frequency conversion duplex heat pump adaptive system is disclosed, which, after being turned on,
the indoor linkage switch is selectively closed according to the requirement, the variable frequency water pump starts to work, water is sent into the heat exchanger from the water return pipe, and the two-stage temperature difference transmitter detects the return water temperature;
the water flow transmitter adjusts the frequency of the variable frequency compressor through the frequency converter and transmits heat energy to the heat exchanger, and water carries out heat conversion in the heat exchanger;
heat is released indoors through an air disc indoor unit, and indoor temperature is changed until the preset temperature is reached;
and after the indoor temperature reaches the preset temperature, closing the indoor linkage switch, stopping the operation of the variable frequency compressor, delaying the time of the variable frequency water pump and the variable frequency fan for 30 to 60 seconds, forcibly opening the differential pressure bypass valve, and conveying the heat in the variable frequency compressor and the heat exchanger into the pipeline.
Furthermore, the flow of the variable-frequency water pump is controlled and adjusted by the difference between the set temperature and the actual return water temperature, and the output power of the variable-frequency host is adjusted by the flow transmitter according to the flow.
The invention has the following advantages:
the invention discloses a full-variable-frequency duplex heat supply pump self-adaptive device and system, which are used for detecting return water temperature through a two-stage temperature difference transmitter, improving the use efficiency of a variable-frequency water pump, reducing energy consumption, enabling the energy output of a variable-frequency host to be more scientific, enabling the matching power to be more accurate, reducing fluctuation caused by the output power of a temperature control compressor, and being stable in operation and low in failure rate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a schematic connection diagram of an adaptive apparatus of a full frequency conversion duplex heat pump according to an embodiment of the present invention;
in the figure: 1-frequency conversion host machine, 2-frequency conversion water pump, 3-double-stage temperature difference transmitter, 4-flow transmitter, 5-water return pipe, 6-water outlet pipe, 7-first hydraulic balancer, 8-second hydraulic balancer, 9-differential pressure bypass valve, 10-frequency conversion fan, 11-frequency conversion compressor, 12-heat exchanger and 13-wind disc indoor machine.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment discloses a full frequency conversion bi-joint heat supply pump self-adaptation device, the device includes: frequency conversion host computer 1, variable frequency water pump 2, doublestage difference in temperature changer 3, flow transmitter 4 and wind disk inner unit 13, frequency conversion host computer 1 passes through wet return 5 and is connected with frequency conversion water pump 2 and doublestage difference in temperature changer 3 in proper order, frequency conversion host computer 1 is connected with flow transmitter 4 through outlet pipe 6, the one end and the wet return 5 of wind disk inner unit 13 are connected, and the other end is connected with outlet pipe 6, and wind disk inner unit 13 installs indoor, carries out the room temperature adjustment.
Frequency conversion host computer 1 includes: the variable frequency heat pump system comprises a variable frequency fan 10, a variable frequency compressor 11 and a heat exchanger 12, wherein the variable frequency compressor 11 is used for compressing a refrigerant to heat or refrigerate, the variable frequency fan is used for helping the compressor to absorb or dissipate heat, the variable frequency compressor 11 is used for transmitting the generated heat to the heat exchanger 12, and two ends of the heat exchanger 12 are respectively connected with a water return pipe 5 and a water outlet pipe 6. The inverter compressor 11 typically provides a source of energy for the air-source heat pump. The air energy heat pump works according to the 'inverse Carnot' principle, and the inverse Carnot circulation principle works through the operation of a compressor system to absorb heat in air to produce hot water. The specific process is as follows: the compressor compresses the refrigerant, the compressed refrigerant with raised temperature produces hot water through the condenser in the water tank, and the heat exchanged refrigerant returns to the compressor for the next circulation.
One end of the water return pipe 5 is connected with a heat exchanger 12, the other end of the water return pipe 5 is connected with a first hydraulic balancer 7, a variable frequency water pump 2 and a two-stage temperature difference transmitter 3 are installed on the water return pipe 5 between the heat exchanger 12 and the first hydraulic balancer 7, and the change of the water return temperature is detected through the two-stage temperature difference transmitter 3. One end of the water outlet pipe 6 is connected with a heat exchanger 12, the other end of the water outlet pipe 6 is connected with a second hydraulic balancer 8, and a flow transmitter 4 is arranged on the water outlet pipe 6 between the heat exchanger 12 and the second hydraulic balancer 8. In the practical application process, the position of the flow transmitter 4 can be determined according to the practical situation and can be arranged on the water return pipe 5 or the water outlet pipe 6.
A differential pressure bypass valve 9 is arranged between the first hydraulic balancer 7 and the second hydraulic balancer 8, the first hydraulic balancer 7 and the second hydraulic balancer 8 are kept balanced through the differential pressure bypass valve 9, and when the variable-frequency compressor 11 stops working, the differential pressure bypass valve 9 is forcibly opened, so that energy of the compressor and the heat exchanger 12 is transmitted to a pipeline.
The wind disk inner machines 13 are arranged indoors, the wind disk inner machines 13 are connected through indoor linkage switches, one end of each wind disk inner machine 13 is connected with the first hydraulic balancer 7, and the other end of each wind disk inner machine 13 is connected with the second hydraulic balancer 8. A plurality of switches on the indoor linkage switch can be switched on or off in a targeted mode, and after the linkage switch is switched on, the fan disc indoor unit 13 enters a working state.
The utility model discloses a full frequency conversion bigeminal heat supply pump self-adaptation device carries out return water temperature through doublestage difference in temperature changer 3 and detects, promotes frequency conversion water pump 2's availability factor, reduces the energy consumption, makes frequency conversion host computer 1's energy output more scientific, and matching power is more accurate, reduces the fluctuation that brings with the power of temperature control compressor output, and the operation is stable, and the fault rate is low.
Example 2
The embodiment discloses a full frequency conversion duplex heat supply pump self-adaptation system, after the system is started, an indoor linkage switch is switched on, and a fan disc inner machine 13 is communicated with water. The indoor linkage switch is selectively closed according to the requirement, the variable frequency water pump 2 starts to work, water is sent into the heat exchanger 12 from the water return pipe 5, and the two-stage temperature difference transmitter 3 detects the return water temperature;
the water flow transmitter adjusts the frequency of the variable frequency compressor through the frequency converter and transmits heat energy to the heat exchanger, and water carries out heat conversion in the heat exchanger;
heat is released indoors through the air disc indoor unit 13, and the indoor temperature is changed until the preset temperature is reached;
after the indoor temperature reaches the preset temperature, the indoor linkage switch is closed, the variable frequency compressor 11 stops running, the variable frequency water pump 2 and the variable frequency fan 10 are delayed for 30 to 60 seconds, the differential pressure bypass valve 9 is forcibly opened, and heat in the variable frequency compressor 11 and the heat exchanger 12 is conveyed into the pipeline.
When the variable-frequency water pump is just started to operate and the temperature difference between the actual backwater temperature and the set temperature exceeds the upper limit of the temperature difference transmitter by 15 ℃, the variable-frequency water pump 2 operates at full frequency, and the flow rate is specifically determined by the opening number of the air disc inner machine 13 or a floor heating loop.
When the refrigeration is set to be 7 ℃, the actual return water temperature is above 22 ℃; the heating is set to be 50 ℃, and when the actual return water temperature is below 35 ℃, the variable frequency water pump 2 outputs full frequency.
In this embodiment, when an indoor unit is turned on, the temperature difference exceeds 15 ℃, and the water flow of the main unit is about 0.8 ton. If the frequency conversion host 1 matches the output power for 5 kilowatt-hours, the return water temperature difference is reduced along with the indoor temperature change, the flow of the frequency conversion water pump 2 is timely reduced, and the frequency conversion host 1 also can output the corresponding power reduction. When indoor fan disc internal unit 13 increases start quantity or ground heating return circuit and increases, the flow can increase because of the increase of passageway, because the water of indoor high difference in temperature merges wet return 5 and lets the frequency that the frequency conversion water pump 2 was increaseed in the adjustment of difference in temperature transmitter, because indoor energy consumption increases and leads to the difference in temperature grow, the water pump increases the flow, and the host computer increases the output according to the change power of flow.
In another embodiment, when an indoor unit or a floor heating loop is started, the water flow is about 0.7 ton when the temperature difference set temperature and the actual return water temperature are 10 ℃, the frequency conversion host 1 outputs about 3 kilowatt hours, but the indoor consumption is 2 kilowatt hours, and then the temperature difference is reduced; the two-stage temperature difference transmitter 3 can reduce the flow of the water pump according to the reduction of the temperature difference, and the variable frequency host 1 can reduce the output power according to the change of the flow, so that the balance of the output of the variable frequency host and the indoor consumption is achieved. When the indoor temperature reaches the set temperature, the indoor linked switch turns off the last indoor unit or the floor heating loop, and simultaneously turns off the compressor, the variable frequency water pump 2 and the variable frequency fan 10 are delayed for 30 to 60 seconds, the differential pressure bypass valve 9 is forcibly opened, and the energy of the variable frequency compressor 11 and the heat exchanger 12 is transmitted to the pipeline. When the outdoor temperature is lower than 5 ℃ in winter, the variable frequency water pump 2 is automatically started to operate and heat, so that the pipelines and the heat exchanger are prevented from being frozen.
The utility model discloses a full frequency conversion bigeminal heat supply pump self-adaptation system carries out return water temperature through doublestage difference in temperature changer 3 and detects, promotes frequency conversion water pump 2's availability factor, reduces the energy consumption, makes frequency conversion host computer 1's energy output more scientific, and matching power is more accurate, reduces the fluctuation that brings with the power of temperature control compressor output, and the operation is stable, and the fault rate is low.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. A full frequency conversion duplex heat pump adaptive device, the device comprising: the air conditioner comprises a frequency conversion host, a frequency conversion water pump, a two-stage temperature difference transmitter, a flow transmitter and an air disc inner unit, wherein the frequency conversion host is sequentially connected with the frequency conversion water pump and the two-stage temperature difference transmitter through a water return pipe, the frequency conversion host is connected with the flow transmitter through a water outlet pipe, one end of the air disc inner unit is connected with the water return pipe, the other end of the air disc inner unit is connected with a water outlet pipe, and the air disc inner unit is installed indoors for room temperature adjustment.
2. The self-adaptive device of a full-frequency-conversion duplex heat-supply pump as claimed in claim 1, wherein the frequency-conversion host comprises: the variable-frequency compressor is used for compressing a refrigerant to heat or refrigerate, the variable-frequency fan is used for helping the compressor to absorb or dissipate heat, the variable-frequency compressor is used for transmitting the generated heat to the heat exchanger, and two ends of the heat exchanger are respectively connected with the water return pipe and the water outlet pipe.
3. The adaptive device of the full-variable-frequency duplex heat supply pump as claimed in claim 2, wherein one end of the water return pipe is connected with the heat exchanger, the other end of the water return pipe is connected with the first hydraulic balancer, and the variable-frequency water pump and the two-stage temperature difference transmitter are installed on the water return pipe between the heat exchanger and the first hydraulic balancer.
4. The adaptive device of the full variable frequency duplex heat pump as claimed in claim 2, wherein one end of the water outlet pipe is connected with the heat exchanger, the other end of the water outlet pipe is connected with the second hydraulic balancer, and a flow transmitter is installed on the water outlet pipe between the heat exchanger and the second hydraulic balancer.
5. The self-adaptive device for the full-variable-frequency duplex heat pump as claimed in claim 3, wherein a differential pressure bypass valve is installed between the first hydraulic balancer and the second hydraulic balancer, and the first hydraulic balancer and the second hydraulic balancer are kept balanced through the differential pressure bypass valve.
6. The self-adaptive device for the full-variable-frequency duplex heat supply pump as claimed in claim 1, wherein a plurality of the air disc indoor units are arranged indoors, the air disc indoor units are connected through an indoor linkage switch, one end of each air disc indoor unit is connected with the first hydraulic balancer, and the other end of each air disc indoor unit is connected with the second hydraulic balancer.
7. A full frequency conversion duplex heat supply pump self-adaptive system is characterized in that after the system is started,
the indoor linkage switch is selectively closed according to the requirement, the variable frequency water pump starts to work, water is sent into the heat exchanger from the water return pipe, and the two-stage temperature difference transmitter detects the return water temperature;
the water flow transmitter adjusts the frequency of the variable frequency compressor through the frequency converter and transmits heat energy to the heat exchanger, and water carries out heat conversion in the heat exchanger;
heat is released indoors through an air disc indoor unit, and indoor temperature is changed until the preset temperature is reached;
and after the indoor temperature reaches the preset temperature, closing the indoor linkage switch, stopping the operation of the variable frequency compressor, delaying the time of the variable frequency water pump and the variable frequency fan for 30 to 60 seconds, forcibly opening the differential pressure bypass valve, and conveying the heat in the variable frequency compressor and the heat exchanger into the pipeline.
8. The adaptive system of a full variable frequency bi-directional heat supply pump according to claim 7, wherein the flow rate of the variable frequency water pump is controlled and adjusted by the difference between the set temperature and the actual return water temperature, and the output power of the variable frequency host is adjusted by the flow rate transmitter according to the flow rate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110668564.2A CN113357725A (en) | 2021-06-16 | 2021-06-16 | Full frequency conversion duplex heat supply pump self-adaptation device and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110668564.2A CN113357725A (en) | 2021-06-16 | 2021-06-16 | Full frequency conversion duplex heat supply pump self-adaptation device and system |
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| CN113357725A true CN113357725A (en) | 2021-09-07 |
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| CN202110668564.2A Pending CN113357725A (en) | 2021-06-16 | 2021-06-16 | Full frequency conversion duplex heat supply pump self-adaptation device and system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206176809U (en) * | 2016-08-31 | 2017-05-17 | 佛山欧思丹热能科技有限公司 | Frequency conversion air source heat pump heating system that refrigerates |
| CN208365626U (en) * | 2018-04-03 | 2019-01-11 | 北京桑普阳光技术有限公司 | A kind of heat pump heating frequency conversion system |
| CN208418925U (en) * | 2018-06-29 | 2019-01-22 | 冯伟敏 | A kind of two alliance frequency conversion coordinated control systems of family formula air energy |
| CN208652707U (en) * | 2018-08-06 | 2019-03-26 | 范刚 | A kind of waterpower control system adjusted for room temperature |
-
2021
- 2021-06-16 CN CN202110668564.2A patent/CN113357725A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206176809U (en) * | 2016-08-31 | 2017-05-17 | 佛山欧思丹热能科技有限公司 | Frequency conversion air source heat pump heating system that refrigerates |
| CN208365626U (en) * | 2018-04-03 | 2019-01-11 | 北京桑普阳光技术有限公司 | A kind of heat pump heating frequency conversion system |
| CN208418925U (en) * | 2018-06-29 | 2019-01-22 | 冯伟敏 | A kind of two alliance frequency conversion coordinated control systems of family formula air energy |
| CN208652707U (en) * | 2018-08-06 | 2019-03-26 | 范刚 | A kind of waterpower control system adjusted for room temperature |
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