CN107131651A - A kind of apparatus and method of stable regulation water temperature - Google Patents
A kind of apparatus and method of stable regulation water temperature Download PDFInfo
- Publication number
- CN107131651A CN107131651A CN201710249410.3A CN201710249410A CN107131651A CN 107131651 A CN107131651 A CN 107131651A CN 201710249410 A CN201710249410 A CN 201710249410A CN 107131651 A CN107131651 A CN 107131651A
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- Prior art keywords
- water temperature
- water
- temperature
- control valve
- heat pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of apparatus and method of stable regulation water temperature, the device includes water tank, water circulating pump, stepping ratio three-way control valve, heat pump and control circuit, the tank outlet is communicated to the water inlet of heat pump by water circulating pump, the delivery port of the heat pump is communicated to the water inlet of triple valve, second delivery port of the triple valve is communicated to the water inlet of heat pump by bypass waterway, first delivery port of the triple valve is communicated to tank entry, and the output end of the control circuit and the control end of triple valve are connected.The present invention is adjusted in real time by bypass waterway to water temperature, calculated and obtained according to the real-time evaporating temperature inside heat pump, therefore result of calculation is not in time lag, so calculating actual leaving water temperature and being adjusted again can ensure that fluctuating temperature is small, so as to realize stable regulation.The present invention can be widely applied to art of heat pumps as a kind of apparatus and method of stable regulation water temperature.
Description
Technical field
The present invention relates to art of heat pumps, especially a kind of apparatus and method of stable regulation water temperature.
Background technology
The method of the conventional stable water temperature of heat pump is typically to carry out PID regulations according to the temperature difference of intaking out, so as to reach stable water
The purpose of temperature, although this quadrat method can meet the purpose of water temperature stability, still can have problems with practical adjustments：
PID regulations are often carried out according to temperature difference of outlet water in the prior art, and because the water temperature detection in water tank has certain time
Hysteresis quality, is easily caused and detects inaccurate, so that PID regulations are frequent, and fluctuation occurs, so as to have impact on out
Coolant-temperature gage is stable；In addition, existing heat pump heating system is easily caused pipeline with that can not enable anti-frost protection when unit is powered off
Or sleeve pipe bursting by freezing.
The content of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is：There is provided one kind avoids temperature detection hysteresis quality from causing water
The device of the stable regulation water temperature of temperature fluctuation.
In order to solve the above-mentioned technical problem, it is another object of the present invention to：There is provided one kind avoids temperature detection hysteresis quality from leading
The method for causing the stable regulation water temperature of fluctuating temperature.
The technical solution adopted in the present invention is：A kind of device of stable regulation water temperature, include water tank, water circulating pump,
Stepping ratio three-way control valve, heat pump and control circuit, the tank outlet are communicated to heat pump by water circulating pump
Water inlet, the delivery port of the heat pump is communicated to the water inlet of stepping ratio three-way control valve, the stepping ratio three
Second delivery port of logical regulating valve is communicated to the water inlet of heat pump, the stepping ratio three-way control valve by bypass waterway
The first delivery port be communicated to tank entry, the output end of the control circuit and the control end of stepping ratio three-way control valve connect
Connect.
Further, power supply and the pipeline cooling-water temperature sensor being arranged in the pipeline of joining water box, the pipeline are also included
Cooling-water temperature sensor is connected with control circuit.
Another technical scheme of the present invention is：A kind of method of stable regulation water temperature, includes following steps：
Stepping ratio three-way control valve is adjusted and is zeroed by water circulating pump before opening；
ON cycle water pump, judges heat exchanger leaving water temperature in heat pump, if leaving water temperature is more than 42 DEG C, starts stepping ratio
Example three-way control valve adjusts heat exchanger leaving water temperature below 42 DEG C, is then shut off stepping ratio three-way control valve；
Open compressor, temperature gap △ t calculated according to the real-time evaporating temperature of heat pump, and according to target leaving water temperature and
Temperature gap △ t calculate actual leaving water temperature, and stepping ratio three is adjusted by the ratio of actual leaving water temperature and target leaving water temperature
Logical regulating valve.
Further, the calculation formula according to the real-time evaporating temperature of heat pump calculating temperature gap △ t is：△t=
P/ (C V), wherein C are specific heat capacity, and V is water speed, and P is unit capacity, according to compressor capacity curve, the different evaporations in real time
The different unit capacity value of temperature correspondence.
Further, when heat exchanger leaving water temperature is less than 40 DEG C in heat pump during water level regulation, by stepping ratio
Three-way control valve regulation zero, re-executes above-mentioned all steps in sequence.
Further, when detecting heat pump power-off, pipeline water temperature is judged, if water temperature is opened less than anti-congealing point is set
Start into ratio three-way control valve, the water in pipeline is arranged outward, until temperature rises to security settings point, close stepping ratio
Three-way control valve.
The beneficial effects of the invention are as follows：By bypass waterway water temperature is adjusted in real time, it is to avoid during PID regulations
Because water temperature detects that the hysteresis quality between regulation process causes fluctuating temperature and frequently regulation, so as to realize the stabilization to water temperature
Regulation；Also pass through detection self-powered and to line temperature simultaneously, it is ensured that to the protection of pipeline after system stalls, it is to avoid
Bursting by freezing situation occurs.
The present invention another beneficial effect be：Water temperature is adjusted in real time by bypass waterway, according in heat pump
The real-time evaporating temperature in portion is calculated and obtained, therefore result of calculation is not in time lag, is entered again so calculating actual leaving water temperature
Row regulation can ensure that fluctuating temperature is small, so as to realize stable regulation；Simultaneously also by detection self-powered and to line temperature,
Ensure the protection to pipeline after system stalls, it is to avoid bursting by freezing situation occurs.
Brief description of the drawings
Fig. 1 is the pipeline structure figure of apparatus of the present invention；
Fig. 2 is the overall schematic of stepping ratio three-way control valve in apparatus of the present invention；
Fig. 3 is the diagrammatic cross-section of stepping ratio three-way control valve in apparatus of the present invention；
Fig. 4 be the inventive method flow chart of steps just；
Fig. 5 is compressor capacity curve map in the inventive method.
In figure：1st, water tank；2nd, water circulating pump；3rd, stepping ratio three-way control valve；4th, heat pump；5th, bypass waterway；6、
Handle；7th, rotating shaft；8th, waterproof case；9th, stepper motor；10th, shaft joint；11st, valve body；12nd, water inlet；13rd, the first delivery port；
14th, the second delivery port.
Embodiment
The embodiment to the present invention is described further below in conjunction with the accompanying drawings：
Reference picture 1, a kind of device of stable regulation water temperature, include water tank 1, water circulating pump 2, stepping ratio three-way control valve 3,
Heat pump 4 and control circuit, the outlet of water tank 1 is communicated to the water inlet of heat pump 4, the heat by water circulating pump 2
The delivery port of pumping system 4 is communicated to the water inlet of stepping ratio three-way control valve 3, the of the stepping ratio three-way control valve 3
Two delivery ports are communicated to the water inlet of heat pump 4 by bypass waterway 5, and the first of the stepping ratio three-way control valve 3 goes out
The mouth of a river is communicated to the entrance of water tank 1, and the output end of the control circuit and the control end of stepping ratio three-way control valve 3 are connected.
The concrete structure of the stepping ratio three-way control valve 3 can refer to Fig. 2 and Fig. 3, and stepping is set on valve body 11
Motor 9, handle 6 is connected with the rotating shaft 7 of stepper motor 9 by shaft joint 10, by first delivery port 13 of the control of stepper motor 9 with
The ratio of second delivery port 14.
It is further used as preferred embodiment, also includes power supply and the pipeline being arranged in the pipeline of joining water box 1
Cooling-water temperature sensor, the pipeline cooling-water temperature sensor is connected with control circuit.
The power supply can drive the stepping ratio three-way control valve of low-power, when detecting system cut-off, judge pipeline
Water temperature, if water temperature opens stepping ratio three-way control valve, make the water in pipeline arrange outward less than anti-congealing point is set, until temperature
Degree rises to security settings point and turns off stepping ratio three-way control valve.
A kind of reference picture 4, method of stable regulation water temperature, includes following steps：
Stepping ratio three-way control valve is adjusted and is zeroed by water circulating pump before opening；For example open and be zeroed in water pump for first 1 minute
Operation, current do not pass through bypass line after water pump is opened.
ON cycle water pump, judges heat exchanger leaving water temperature in heat pump, if leaving water temperature is more than 42 DEG C, starts step
Enter ratio three-way control valve and adjust heat exchanger leaving water temperature below 42 DEG C, be then shut off stepping ratio three-way control valve；Regulation
High jump pressure when heat exchanger leaving water temperature can avoid the compressor from opening below 42 DEG C, disconnects overload protective device, causes equipment to be stopped
Only run.
Compressor is opened, temperature gap △ t are calculated according to the real-time evaporating temperature of heat pump, and water temperature is gone out according to target
Degree and temperature gap △ t calculate actual leaving water temperature, and stepping ratio is adjusted by the ratio of actual leaving water temperature and target leaving water temperature
Example three-way control valve；I.e. when actual leaving water temperature is less than target leaving water temperature, big stepping ratio three-way control valve is opened, increase is other
The bypass amount on water flowing road 5, when actual leaving water temperature is more than target leaving water temperature, turns down stepping ratio three-way control valve, reduces other
Flux.Because temperature gap △ t are calculated according to the real-time evaporating temperature inside heat pump and obtained, therefore result of calculation will not go out
It is current stagnant, so calculating actual leaving water temperature and being adjusted again can ensure that fluctuating temperature is small, so as to realize stable regulation.
It is further used as preferred embodiment, it is described that temperature gap △ is calculated according to the real-time evaporating temperature of heat pump
T calculation formula is：△ t=P/ (C V), wherein C are specific heat capacity, and V is water speed, and P is unit capacity, bent according to compressor capacity
Line, the different unit capacity value of the different correspondences of evaporating temperature in real time, specific compressor capacity curve can refer to Fig. 5.
It is further used as preferred embodiment, when heat exchanger leaving water temperature is less than in heat pump during water level regulation
At 40 DEG C, stepping ratio three-way control valve is adjusted and is zeroed, above-mentioned all steps are re-executed in sequence.
It is further used as preferred embodiment, when detecting heat pump power-off, pipeline water temperature being judged, if water temperature is low
In setting anti-congealing point, then stepping ratio three-way control valve is opened, the water in pipeline is arranged outward, until temperature rises to safety and set
Fixed point, closes stepping ratio three-way control valve.
Above is the preferable implementation to the present invention is illustrated, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalents or replace on the premise of without prejudice to spirit of the invention
Change, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (6)
1. a kind of device of stable regulation water temperature, it is characterised in that：Include water tank, water circulating pump, stepping ratio threeway regulation
Valve, heat pump and control circuit, the tank outlet are communicated to the water inlet of heat pump, the heat pump by water circulating pump
The delivery port of system is communicated to the water inlet of stepping ratio three-way control valve, the second water outlet of the stepping ratio three-way control valve
Mouth is communicated to the water inlet of heat pump by bypass waterway, and the first delivery port of the stepping ratio three-way control valve is communicated to
Tank entry, the output end of the control circuit and the control end of stepping ratio three-way control valve are connected.
2. a kind of method of stable regulation water temperature according to claim 2, it is characterised in that：Also include power supply and setting
Pipeline cooling-water temperature sensor in the pipeline of joining water box, the pipeline cooling-water temperature sensor is connected with control circuit.
3. a kind of method of stable regulation water temperature, it is characterised in that include following steps：
Stepping ratio three-way control valve is adjusted and is zeroed by water circulating pump before opening；
ON cycle water pump, judges heat exchanger leaving water temperature in heat pump, if leaving water temperature is more than 42 DEG C, starts stepping ratio
Example three-way control valve adjusts heat exchanger leaving water temperature below 42 DEG C, is then shut off stepping ratio three-way control valve；
Open compressor, temperature gap △ t calculated according to the real-time evaporating temperature of heat pump, and according to target leaving water temperature and
Temperature gap △ t calculate actual leaving water temperature, and stepping ratio three is adjusted by the ratio of actual leaving water temperature and target leaving water temperature
Logical regulating valve.
4. a kind of method of stable regulation water temperature according to claim 3, it is characterised in that：It is described according to heat pump
Evaporating temperature calculating temperature gap △ t calculation formula is in real time：△ t=P/ (CV), wherein C are specific heat capacity, and V is water speed, P
For unit capacity, according to compressor capacity curve, the different unit capacity value of the different correspondences of evaporating temperature in real time.
5. a kind of method of stable regulation water temperature according to claim 3, it is characterised in that：It is hot during water level regulation
When heat exchanger leaving water temperature is less than 40 DEG C in pumping system, stepping ratio three-way control valve is adjusted and is zeroed, is held again in sequence
The above-mentioned all steps of row.
6. a kind of method of stable regulation water temperature according to claim 3, it is characterised in that：Break when detecting heat pump
When electric, pipeline water temperature is judged, if water temperature opens stepping ratio three-way control valve, make the water in pipeline less than anti-congealing point is set
Arrange outward, until temperature rises to security settings point, close stepping ratio three-way control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710249410.3A CN107131651B (en) | 2017-04-17 | 2017-04-17 | Device and method for stably adjusting water temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710249410.3A CN107131651B (en) | 2017-04-17 | 2017-04-17 | Device and method for stably adjusting water temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107131651A true CN107131651A (en) | 2017-09-05 |
| CN107131651B CN107131651B (en) | 2020-06-30 |
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ID=59715838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710249410.3A Active CN107131651B (en) | 2017-04-17 | 2017-04-17 | Device and method for stably adjusting water temperature |
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| Country | Link |
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| CN (1) | CN107131651B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830933A (en) * | 2020-07-16 | 2020-10-27 | 广东亨通光电科技有限公司 | Heating element detection system, method and device and storage medium |
| CN111853926A (en) * | 2020-06-01 | 2020-10-30 | 深圳市合信达控制***有限公司 | Method, device, terminal and storage medium for preventing wall-hanging stove from generating condensed water |
| CN112833448A (en) * | 2019-11-25 | 2021-05-25 | 株式会社能率 | Hot water supply device |
| CN112984609A (en) * | 2019-12-12 | 2021-06-18 | 株式会社能率 | Hot water supply device |
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| JP2005098568A (en) * | 2003-09-24 | 2005-04-14 | Matsushita Electric Ind Co Ltd | Water heater |
| CN1749670A (en) * | 2004-09-15 | 2006-03-22 | 松下电器产业株式会社 | Heat storage device of heat pump |
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| EP2853839A1 (en) * | 2013-09-27 | 2015-04-01 | Mitsubishi Heavy Industries, Ltd. | Hot water supply system and control method thereof |
| CN105276843A (en) * | 2015-11-19 | 2016-01-27 | 沃逸新能源科技（江苏）有限公司 | Heat pump hot water and solar hot water control system |
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Patent Citations (6)
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| JP2005098568A (en) * | 2003-09-24 | 2005-04-14 | Matsushita Electric Ind Co Ltd | Water heater |
| CN1749670A (en) * | 2004-09-15 | 2006-03-22 | 松下电器产业株式会社 | Heat storage device of heat pump |
| CN201053758Y (en) * | 2007-06-04 | 2008-04-30 | 南京工业大学 | Two-stage compression air source heat pump water heater |
| CN102725591A (en) * | 2010-03-05 | 2012-10-10 | 三菱重工业株式会社 | Hot water heat pump and method for controlling same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833448A (en) * | 2019-11-25 | 2021-05-25 | 株式会社能率 | Hot water supply device |
| CN112833448B (en) * | 2019-11-25 | 2024-03-12 | 株式会社能率 | Hot water supply device |
| CN112984609A (en) * | 2019-12-12 | 2021-06-18 | 株式会社能率 | Hot water supply device |
| CN111853926A (en) * | 2020-06-01 | 2020-10-30 | 深圳市合信达控制***有限公司 | Method, device, terminal and storage medium for preventing wall-hanging stove from generating condensed water |
| CN111830933A (en) * | 2020-07-16 | 2020-10-27 | 广东亨通光电科技有限公司 | Heating element detection system, method and device and storage medium |
| CN111830933B (en) * | 2020-07-16 | 2022-03-29 | 广东亨通光电科技有限公司 | Heating element detection system, method and device and storage medium |
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| Publication number | Publication date |
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| CN107131651B (en) | 2020-06-30 |
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