CN102854905B - Backwater control method used for hot-water project - Google Patents

Backwater control method used for hot-water project Download PDF

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Publication number
CN102854905B
CN102854905B CN201210344197.1A CN201210344197A CN102854905B CN 102854905 B CN102854905 B CN 102854905B CN 201210344197 A CN201210344197 A CN 201210344197A CN 102854905 B CN102854905 B CN 102854905B
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China
Prior art keywords
temperature
backwater
water
pipe
return
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CN201210344197.1A
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CN102854905A (en
Inventor
王杭吉
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JIANGSU ELITECH ELECTRIC CO Ltd
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JIANGSU ELITECH ELECTRIC CO Ltd
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Abstract

The invention discloses a backwater control method used for a hot-water project and belongs to the field of hot-water project control. The backwater control method includes acquiring water temperature of a thermal-storage water tank and temperature of a backwater pipe through a temperature sensor respectively; responding the water temperature of the thermal-storage water tank and the temperature of the backwater pipe, and comparing the temperature of the backwater pipe with set backwater temperature; judging whether to start backwater control or stop backwater or perform cyclic backwater or not; starting backwater when the interior temperature of the thermal-storage water tank is higher than the backwater temperature and the temperature of the backwater pipe is lower than the set temperature and stopping backwater until the interior temperature of the backwater pipe is higher than the temperature; and starting backwater by a device according to a set time period when the interior temperature of the thermal-storage water tank is lower than the backwater temperature and the interior temperature of the backwater pipe is lower than the set temperature, and stopping cyclic backwater by the backwater device until the interior temperature of the backwater pipe is higher than the set temperature. By the use of the backwater control method, excessively-low interior temperature of the backwater pipe is overcome, and electricity waste caused by continuous backwater is avoided.

Description

For the backwater control method of hot water engineering
Technical field
The present invention relates to hot water engineering control field, specifically a kind of backwater control method for hot water engineering, is applicable to the control of hot water engineering.
Background technology
Engineering or Domestic water tank are when providing hot water, owing to not using for a long time, the water temperature in feed pipe will be made too low and cannot use, when user needs to use, just must first be released by the cold water in feed pipe, just can obtain suitable hot water, this just causes waste, backwater is exactly sent back in water tank by the cold water in feed pipe to reheat, thus achieves the re-using to feed pipe inner cold water.
At present, return water mode market used mainly is divided into lasting backwater and temperature backwater.Lasting backwater is exactly continued to send back in water tank by the water in return pipe, so will consume a large amount of electricity, and hot water is producing the exchange of heat with the external world through return pipe, reduces the speed of heating water tanks.The control mode controlling backwater general for temperature is: when the temperature in return pipe starts backwater lower than during return water temperature; When temperature in return pipe then stops backwater higher than during return water temperature, although this solves the waste that lasting backwater causes, but when water tank temperature does not also reach return water temperature, water temperature in return pipe also will inevitably lower than return water temperature, like this device remains and is in backwater but the state not reaching required return water temperature always, so still there is the phenomenon of waste electricity, and the thermal loss of water tank can be accelerated.
Summary of the invention
In order to overcome the deficiency of above-mentioned existing water return method, the invention provides a kind of backwater control method for hot water engineering, can when water tank temperature be lower, the too much power consumption both having avoided lasting backwater to bring and thermal loss, can keep again the water temperature in feed pipe to be unlikely to too low.
The present invention realizes with following technical scheme: a kind of backwater control method for hot water engineering, measure heat storage water tank temperature and return pipe temperature respectively by two temperature sensors, by a water recovery apparatus cold water in water pipe drawn back heat storage water tank and cover hot water in return pipe; Concrete rate-determining steps is as follows:
The temperature of water temperature and return pipe in heat storage water tank is gathered respectively by temperature sensor;
Respond water temperature and return pipe in described heat storage water tank temperature and with setting return water temperature comparison;
Judge whether open backwater control or stop backwater or the cycle of carrying out backwater;
When water storage the temperature inside the box opens backwater higher than return water temperature, return pipe temperature lower than during the temperature set, until return pipe temperature is higher than this temperature, device stops backwater;
When water storage the temperature inside the box is lower than return water temperature, when return pipe temperature is lower than the temperature set, device starts to start backwater according to the setting-up time cycle, until return pipe temperature is higher than this temperature, and water recovery apparatus dwelling period backwater.
The invention has the beneficial effects as follows: not only solve the problem that temperature in return pipe is too low, it also avoid the phenomenon causing waste electricity because continuing backwater; The temperature in return pipe is made again to use closest to user.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention will be further described.
Fig. 1 is workflow diagram of the present invention;
Fig. 2 is embodiment of the present invention structural drawing.
In figure: 1, heat storage water tank, 2, running water pipe, 3, return pipe, 4, supercharge pump, 5, feed pipe, 6, backwater solenoid valve, 7, return pipe temperature sensor, 8, heat storage water tank temperature sensor.
Embodiment
Embodiment as shown in Figure 2, hot water engineering comprises heat storage water tank 1, and running water pipe 2 is arranged at heat storage water tank 1 top, has return pipe 3 bottom heat storage water tank 1, doublely makees rising pipe.One heat storage water tank temperature sensor 8 is installed in heat storage water tank 1, for gathering the water temperature in heat storage water tank 1; One return pipe temperature sensor 7 is installed in return pipe 3, for gathering return pipe temperature; The present embodiment water recovery apparatus comprises a backwater solenoid valve 6 and supercharge pump 4, by water recovery apparatus, the cold water in return pipe is drawn back heat storage water tank 1, covers hot water; Backwater solenoid valve 6 and return pipe 3 return heat storage water tank 1 for the current controlled in water pipe; Heat storage water tank 1 is for storing the hot water of preparation; Supercharge pump 4 and feed pipe 5 for by delivery to using water terminal.
Workflow diagram as shown in Figure 1, the backwater control of controller can be arranged to lasting backwater and carry out backwater according to temperature.When heat storage water tank temperature is higher than return water temperature, if now return pipe temperature is lower than uniform temperature, water recovery apparatus starts backwater, until when return pipe temperature is higher than this temperature, just stop backwater; When heat storage water tank temperature is lower than return water temperature, if when now the temperature of return pipe is lower than design temperature, water recovery apparatus carries out cycle backwater, until return pipe temperature is higher than ability dwelling period backwater during this temperature.By control of the present invention, making the temperature in return pipe be unlikely to too low, it also avoid the wasting of resources caused because continuing backwater.

Claims (1)

1. the backwater control method for hot water engineering, it is characterized in that: measure heat storage water tank temperature and return pipe temperature respectively by two temperature sensors, by a water recovery apparatus cold water in water pipe drawn back heat storage water tank and cover hot water in return pipe; Concrete rate-determining steps is as follows:
The temperature of water temperature and return pipe in heat storage water tank is gathered respectively by temperature sensor;
Respond water temperature and return pipe in described heat storage water tank temperature and with setting return water temperature comparison;
Judge whether open backwater control or stop backwater or the cycle of carrying out backwater; Concrete determination methods is:
When heat storage water tank temperature is higher than return water temperature setting value, if now return pipe temperature opens backwater lower than during certain temperature, until return pipe temperature is higher than return water temperature setting value, water recovery apparatus stops backwater; When heat storage water tank temperature is lower than return water temperature setting value, and return pipe temperature lower than certain temperature time, water recovery apparatus start according to the certain hour cycle start backwater, until return pipe temperature is higher than return water temperature setting value, device dwelling period backwater.
CN201210344197.1A 2012-09-17 2012-09-17 Backwater control method used for hot-water project Active CN102854905B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210344197.1A CN102854905B (en) 2012-09-17 2012-09-17 Backwater control method used for hot-water project

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Application Number Priority Date Filing Date Title
CN201210344197.1A CN102854905B (en) 2012-09-17 2012-09-17 Backwater control method used for hot-water project

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CN102854905B true CN102854905B (en) 2014-12-17

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104879927A (en) * 2015-06-25 2015-09-02 广东美的暖通设备有限公司 Water return control method and device of heat pump water heater

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2884024Y (en) * 2006-03-17 2007-03-28 朱子义 Curculation and water-saving type backwater device of water-heater
CN101266062A (en) * 2007-03-13 2008-09-17 黄瑞宗 Hot-water supplying system
CN101303170A (en) * 2008-04-16 2008-11-12 深圳创维-Rgb电子有限公司 Intelligent backwater treating device and method
DE102008009285B3 (en) * 2008-02-15 2009-08-13 Robert Bosch Gmbh A layered charge storage system and method of operating a stratified charge storage system
CN102494160A (en) * 2011-12-12 2012-06-13 湖北优佰瑞科技有限公司 Constant temperature water outlet controller and constant temperature water supply system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2884024Y (en) * 2006-03-17 2007-03-28 朱子义 Curculation and water-saving type backwater device of water-heater
CN101266062A (en) * 2007-03-13 2008-09-17 黄瑞宗 Hot-water supplying system
DE102008009285B3 (en) * 2008-02-15 2009-08-13 Robert Bosch Gmbh A layered charge storage system and method of operating a stratified charge storage system
CN101303170A (en) * 2008-04-16 2008-11-12 深圳创维-Rgb电子有限公司 Intelligent backwater treating device and method
CN102494160A (en) * 2011-12-12 2012-06-13 湖北优佰瑞科技有限公司 Constant temperature water outlet controller and constant temperature water supply system

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