CN203231598U - Control system for variable frequency air source heat pump - Google Patents
Control system for variable frequency air source heat pump Download PDFInfo
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- CN203231598U CN203231598U CN 201320226764 CN201320226764U CN203231598U CN 203231598 U CN203231598 U CN 203231598U CN 201320226764 CN201320226764 CN 201320226764 CN 201320226764 U CN201320226764 U CN 201320226764U CN 203231598 U CN203231598 U CN 203231598U
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- frequency
- heat pump
- air source
- source heat
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Abstract
The utility model provides a control system for a variable frequency air source heat pump. The control system controls the air source heat pump by controlling the input power frequency of a compressor of the air source heat pump. The control system comprises a rectifier filter module, an inverter, an oscillator, and a frequency control module. The rectifier filter module converts power frequency source into direct current. The inverter converts direct current output by the rectifier filter module into alternating current. The oscillator generates frequency required by the inverter. The frequency control module controls the oscillator to allow the oscillator to generate the required frequency. The control system has the advantages that the oscillation frequency of the inverter is controlled and accordingly the air source heat pump can operate with a stable temperature range.
Description
Technical field
The utility model relates to air source heat pump, particularly a kind of control system of frequency conversion air source heat pump.
Background technology
Heat pump (Heat Pump) claims cold machine (Refrigerator) again, energy is sent to the device of high temperature place (high temperature heat reservoir) by low temperature place (low temperature heat reservoir).And it offers the energy in the high place of temperature and is greater than its operation energy needed.When utilizing low-boiling point liquid through the evaporation of choke valve decompression back, absorb heat from cryogenic object, then with both vapor compression, elevate the temperature, emit the heat of absorption when the condenser and liquefy, so periodic duty can constantly be transferred to the higher object of temperature to heat from the lower object of temperature, this heat can be used for equipment such as heating, drying.
Heat pump is that the transfer of heat of low-temperature heat source is higher than the object of environment temperature to temperature, thereby obtains the machine and equipment of heat.Heat pump is to supply with heat to the object that is higher than environment temperature, for example the hot water of using to building heating, supply life or some production process etc.What the low-temperature heat source of heat pump was the most frequently used is the heat of surrounding medium (air or the surface water), also the heat of waste vapour, waste water and the waste oil etc. of discharging in available underground heat or the production process.
The operation principle of heat pump be by the medium that flow at evaporimeter, compressor, the circulation that the gas phase in the parts such as condenser and expansion valve changes is delivered to the heat of cryogenic object in the high temp objects and goes.Detailed process is as follows:
1. the superheated liquid medium absorb the heat of cryogenic object in evaporimeter, flash to the gas medium.
2. the gas medium that come out of evaporimeter become the gas medium of HTHP through the compression of liquid compressor.
3. the gas medium of HTHP discharge heat energy to giving high temp objects, self becoming the highly pressurised liquid medium simultaneously in condenser.
4. the highly pressurised liquid medium reduce pressure in expansion valve, become the superheated liquid medium again, enter evaporimeter, and initial process circulates.
The principle of air source heat pump: air source heat pump is in operation, evaporimeter from airborne environment thermal energy draw heat with evaporation heat transfer working medium, the compressed machine compression of refrigerant vapor back pressure and temperature rises, high-temperature vapour is by forever cohering when the special ring pipe condenser condenses of water storage tank outer surface becomes liquid, the heat transferred that discharges the water in the air source heat pump water storage tank.Condensed heat-transfer working medium turns back to evaporimeter by expansion valve, and then is evaporated, and so moves in circles.
Conventional air source operation of heat pump is at fixed state frequently, and its shortcoming is: starting current is big; Impact bigger to electrical network; The low temperature environment runnability is poor, is lower than 7 ℃ of evaporimeter frostings; Produce the high-temperature water difficulty, system condensing pressure was close to limiting value when water temperature was higher than 60 ℃; Water temperature is the rising and operating current is directly proportional with water temperature of heating performance difference during greater than 45 ℃, and for example: the rated power of 10P heat pump is 8.7KW, is 12KW and water temperature reaches 55 ℃ maximum operate power; System's long-term work has been shortened the compressor life-span under high-temperature high-pressure state.
Summary of the invention
In order to overcome the fixed above deficiency of water resource heat pump frequently at present, the utility model provides a kind of control system of frequency conversion air source heat pump, by the different frequency of control compressor, makes the heat outputting coolant-temperature gage stable, and heat pump is guaranteed service life.
The technical solution of the utility model is: a kind of control system of frequency conversion air source heat pump, and described control system is controlled described air source heat pump by the compressor input supply frequency of control air source heat pump; Comprise and convert power frequency supply to galvanic rectification filtering module, the direct current of rectification filtering module output is converted to the inverter of alternating current, produce the oscillator of the required frequency of inverter, described oscillator is controlled the frequency control module that makes oscillator produce required frequency.
Further, in the control system of above-mentioned frequency conversion air source heat pump: described frequency control module comprises MCU, is arranged on the evaporimeter of air source heat pump, temperature sensor and pressure sensor in the condenser, all temperature sensors and the output of pressure sensor are input to respectively among the described MCU, and described MCU links to each other with the control signal input of described oscillator.
Further, in the control system of above-mentioned frequency conversion air source heat pump: also comprise the environment temperature sensor of measures ambient temperature, the described MCU of output termination of described environment temperature sensor.
Further, in the control system of above-mentioned frequency conversion air source heat pump: also comprise remote monitoring module, described remote monitoring module links to each other with described MCU by communication mode.
The utility model is controlled by the frequency of oscillation to inverter, makes the starting current of compressor little; Electrical network there is not impact; The cold operation function admirable is adjusted to the high-frequency operation and the increase back pressure automatically under low temperature environment; Water temperature during greater than 45 ℃ system reduce the running frequency operation automatically, running current can be greater than rated current; System always works under the declared working condition state, has guaranteed the service life of compressor; The system integration two frequency-variable controllers, water temperature control, water level monitoring, compressor exhaust temperature protection, system low-voltage, system high pressure, environment temperature monitoring, phase shortage and phase sequence, overcurrent protection; many the online controls of principal and subordinate's machine, remote control switch machine and data upload functions.
Below with reference to drawings and Examples, the utility model is carried out comparatively detailed explanation.
Description of drawings
Fig. 1 is control system block diagram of the present utility model.
The specific embodiment
As shown in Figure 1: present embodiment is a kind of control system of frequency conversion air source heat pump, and this control system is controlled described air source heat pump by the compressor input supply frequency of control air source heat pump.This system comprises with lower module: rectification filtering module, MCU, detection signal module, oscillator and contrary counter.
Rectification filtering module converts the power frequency supply of civil power to direct current, rectification filtering module has much now, can adopt a kind of common full-wave rectification, filter circuit, the power supply that present embodiment adopts is the power frequency supply of three-phase four-wire system, first all uses No. one rectification circuit mutually, makes it become direct current.
Inverter becomes alternating current to power the dc inverter of front conversion to compressor, the frequency of the alternating current after the inversion is controlled by control circuit, it mainly is the frequency of oscillation by the oscillator that is controlled to be the frequency signal that inverter provides, the frequency of oscillation of oscillator is controlled by MCU, the temperature signal of the environment temperature sensor of MCU by receiving the temperature sensor that is arranged on evaporimeter, the condenser and measures ambient temperature is arranged on the detected high pressure of pressure sensor and low-voltage signal in evaporimeter, the condenser in addition.When the low temperature frosting, be adjusted to the high-frequency operation automatically and the increase back pressure, this mainly is because back pressure is crossed low and ambient humidity is bigger, and converting operation is under low temperature environment; When water temperature during greater than 45 ℃ system reduce the running frequency operation automatically, running current can be greater than rated current; System always works under the declared working condition state, has guaranteed the service life of compressor; The system integration two frequency-variable controllers, water temperature control, water level monitoring, compressor exhaust temperature protection, system low-voltage, system high pressure, environment temperature monitoring, phase shortage and phase sequence, overcurrent protection; many the online controls of principal and subordinate's machine, remote control switch machine and data upload functions.Remote monitoring for convenience also comprises remote monitoring module in the present embodiment, described remote monitoring module links to each other with described MCU by communication mode.
Claims (4)
1. the control system of a frequency conversion air source heat pump, described control system is controlled described air source heat pump by the compressor input supply frequency of control air source heat pump; It is characterized in that: comprise converting power frequency supply to galvanic rectification filtering module, the direct current of rectification filtering module output is converted to the inverter of alternating current, produce the oscillator of the required frequency of inverter, described oscillator is controlled the frequency control module that makes oscillator produce required frequency.
2. the control system of frequency conversion air source heat pump according to claim 1, it is characterized in that: described frequency control module comprises MCU, is arranged on the evaporimeter of air source heat pump, temperature sensor and pressure sensor in the condenser, all temperature sensors and the output of pressure sensor are input to respectively among the described MCU, and described MCU links to each other with the control signal input of described oscillator.
3. the control system of frequency conversion air source heat pump according to claim 2 is characterized in that: also comprise the environment temperature sensor of measures ambient temperature, the described MCU of output termination of described environment temperature sensor.
4. according to the control system of claim 2 or 3 described frequency conversion air source heat pumps, it is characterized in that: also comprise remote monitoring module, described remote monitoring module links to each other with described MCU by communication mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320226764 CN203231598U (en) | 2013-04-28 | 2013-04-28 | Control system for variable frequency air source heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320226764 CN203231598U (en) | 2013-04-28 | 2013-04-28 | Control system for variable frequency air source heat pump |
Publications (1)
| Publication Number | Publication Date |
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| CN203231598U true CN203231598U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320226764 Expired - Fee Related CN203231598U (en) | 2013-04-28 | 2013-04-28 | Control system for variable frequency air source heat pump |
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| CN (1) | CN203231598U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949412A (en) * | 2015-06-17 | 2015-09-30 | 浙江正泰中自控制工程有限公司 | Interference-preventing high-performance input module for refrigerating machine |
| CN109823177A (en) * | 2017-11-22 | 2019-05-31 | 湖南中车时代电动汽车股份有限公司 | A kind of protective device and method for electric car |
| CN114362179A (en) * | 2021-11-25 | 2022-04-15 | 科希曼电器有限公司 | Air source heat pump suitable for rural low-voltage of low temperature |
-
2013
- 2013-04-28 CN CN 201320226764 patent/CN203231598U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949412A (en) * | 2015-06-17 | 2015-09-30 | 浙江正泰中自控制工程有限公司 | Interference-preventing high-performance input module for refrigerating machine |
| CN109823177A (en) * | 2017-11-22 | 2019-05-31 | 湖南中车时代电动汽车股份有限公司 | A kind of protective device and method for electric car |
| CN109823177B (en) * | 2017-11-22 | 2022-04-05 | 湖南中车时代电动汽车股份有限公司 | Protection device and method for electric automobile |
| CN114362179A (en) * | 2021-11-25 | 2022-04-15 | 科希曼电器有限公司 | Air source heat pump suitable for rural low-voltage of low temperature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN SANGXIA NEW ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHENZHEN SANGXIA SOLAR ENERGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518000, Shenzhen three, Guangdong District, Buji Province, Longgang Lan Lan Road Race rabbit digital industrial factory building, 3 floor Patentee after: Shenzhen city mulberry Xiaxin Energy Technology Co Ltd Address before: 518000, Shenzhen three, Guangdong District, Buji Province, Longgang Lan Lan Road Race rabbit digital industrial factory building, 3 floor Patentee before: Shenzhen Sangxia Solar Energy Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20170428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |