CN109612109B - Cold water recovery type hot water system and cold water recovery method - Google Patents

Cold water recovery type hot water system and cold water recovery method Download PDF

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Publication number
CN109612109B
CN109612109B CN201811235551.0A CN201811235551A CN109612109B CN 109612109 B CN109612109 B CN 109612109B CN 201811235551 A CN201811235551 A CN 201811235551A CN 109612109 B CN109612109 B CN 109612109B
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water
control valve
hot water
water outlet
tank
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CN109612109A (en
Inventor
程洪
向熹
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Zhongshan City Heng Yue Electrical Appliance Co ltd
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Zhongshan City Heng Yue Electrical Appliance Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/12Connecting heaters to circulation pipes
    • F24H9/122Connecting heaters to circulation pipes for water heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/14Connecting different sections, e.g. in water-heaters
    • F24H9/142Connecting hydraulic components
    • F24H9/144Valve seats, piping and heat exchanger connections integrated into a one-piece hydraulic unit
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices or methods
    • F24H9/2007Arrangement or mounting of control or safety devices or methods for water heaters
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]

Abstract

The invention provides a cold water recovery type hot water system and a cold water recovery method, wherein the cold water recovery type hot water system comprises a water heater, a water storage device, a first control valve, a second control valve and a first sensor, wherein the water heater comprises a cold water inlet pipe, a hot water outlet pipe and a controller; the water storage device comprises a water tank, a water tank inlet pipe, a water tank outlet pipe, a water return pipe, an electric heating module and a second sensor; the first control valve is connected with the hot water outlet pipe, the water tank outlet pipe, one end of the water return pipe and the external hot water outlet, and the first control valve is connected with the controller; the first sensor is arranged at one end of the first control valve connected with the hot water outlet pipe and is connected with the controller; the other end of the water return pipe is connected with a water inlet pipe of the water tank; the tank water inlet pipe is connected with a cold water inlet pipe and an external cold water source through a second control valve, and the second control valve is connected with the controller; the second sensor and the electric heating module are electrically connected with the controller; thereby preventing a user from wasting a large amount of cold water in the pipeline when opening hot water.

Description

Cold water recovery type hot water system and cold water recovery method
Technical Field
The invention relates to the technical field of water heaters, in particular to a cold water recovery system and a cold water recovery method of a water heater.
Background
Along with the increasing living standard of people, the comfort requirement of people on family life is higher and higher. The accompanying various electric products facilitate human life and occupy a small space. Therefore, more and more multifunctional electric appliances enter the lives of people. Water heaters have also undergone different generations of development.
The existing gas instantaneous water heaters all have the problem of a cold water interlayer, namely, when a user opens water again in a short time after closing during the use of hot water, the temperature difference of the water in a heat exchange pipeline is large due to the reasons of delay of ignition preparation during starting, reduction of water temperature during stopping and the like, so that the effect of bath comfort level cannot be achieved; in addition, many people often choose to drain the cold water in the water pipe to avoid the cold water in the water pipe causing improper use when starting the water heater, and a lot of water resources are wasted.
Disclosure of Invention
In order to solve the problems, the invention adopts the following specific technical scheme: a cold water recovery type hot water system comprises a water heater, wherein the water heater comprises a cold water inlet pipe, a hot water outlet pipe, a controller, a water storage device, a first control valve, a second control valve and a first sensor; the water storage device comprises a water tank, a water tank inlet pipe, a water tank outlet pipe, a water return pipe, an electric heating module and a second sensor; the first control valve is connected with the hot water outlet pipe, the water tank outlet pipe, one end of the water return pipe and the external hot water outlet to control the hot water source when the external hot water outlet discharges water, and the first control valve is electrically connected with the controller; the first sensor is arranged at one end of the first control valve connected with the hot water outlet pipe and is electrically connected with the controller; the other end of the water return pipe is connected with a water inlet pipe of the water tank; the water inlet pipe of the water tank is connected with the cold water inlet pipe and an external cold water source through a second control valve, and the second control valve is electrically connected with the controller; the second sensor and the electric heating module are electrically connected with the controller.
Preferably, the water tank is disposed adjacent to an external hot water outlet, which is a tap hot water outlet.
Preferably, the water tank further comprises a water level sensor, and the water level sensor is electrically connected with the controller.
Preferably, the water outlet of the water tank is further provided with a third control valve, and the third control valve is electrically connected with the controller.
The invention also provides a cold water recovery method of the cold water recovery type hot water system, which comprises the following steps: (1) the first sensor senses the water temperature in the hot water outlet pipe, and if the water temperature in the hot water outlet pipe is lower than a first preset temperature, the first control valve is communicated with the water outlet pipe of the water tank and an external hot water outlet and is communicated with the hot water outlet pipe and a water return pipe; if the water temperature of the hot water outlet pipe is higher than the first preset temperature, the first control valve is communicated with the hot water outlet pipe and the external hot water outlet. (2) Under the condition that the external hot water outlet is closed, the water level sensor senses the water level in the water tank, and if the water level is lower than a first preset water level, the second control valve is opened to enable external cold water to flow into the water tank; and under the condition that the external hot water outlet is opened, the water level sensor senses the water level in the water tank, and if the water level is lower than a second preset water level, the second control valve is opened to enable external cold water to flow into the water tank. (3) And under the condition that the external hot water outlet is closed, the second sensor senses the water temperature in the water tank, and if the water temperature is lower than a second predicted temperature, the water in the electric heating mold water tank is started to be heated.
Preferably, a third control valve is arranged at the water outlet of the water tank, and the third control valve closes the water outlet of the water tank before the first control valve connects the external hot water outlet with the hot water outlet pipe.
The beneficial technical effects are as follows: by the cold water recovery type hot water system and the cold water recovery method, the problem that a user has long-time cold water after the user opens the faucet can be effectively solved, and meanwhile, the waste of water resources can be effectively saved.
Drawings
Fig. 1 is a schematic connection diagram of a cold water recovery type hot water system according to the present invention.
Description of the figures
The water heater comprises a water heater 10, a cold water inlet pipe 11, a hot water outlet pipe 12, a controller 13, a water storage device 20, a water tank inlet pipe 21, a water tank outlet pipe 22, a water return pipe 23, a water tank 24, an electric heating module 25, a first control valve 30, a second control valve 40, an external hot water outlet 50, an external cold water source 60 and a third control valve 70
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 one
Referring to fig. 1, the present invention provides a cold water recovery type hot water system, which includes a water heater 10, wherein the water heater 10 includes a cold water inlet pipe 11, a hot water outlet pipe 12, and a controller 13, and the cold water recovery type hot water system further includes a water storage device 20, a first control valve 30, a second control valve 40, and a first sensor (not shown in the figure); the water storage device 20 comprises a water tank 24, a water tank inlet pipe 21, a water tank outlet pipe 22, a water return pipe 23, an electric heating module 25 and a second sensor (not shown in the figure); the first control valve 30 is connected with one end of the hot water outlet pipe 12, the water tank outlet pipe 22 and the water return pipe 23 and the external hot water outlet 50 to control the hot water source when the external hot water outlet 50 discharges water, and the first control valve 30 is electrically connected with the controller 13; the first sensor is arranged at one end of the first control valve 30 connected with the hot water outlet pipe 12, namely the water temperature detected by the first sensor at the position where the hot water outlet pipe 12 is connected with the first control valve 30, and mainly aims to judge the water temperature of the hot water outlet pipe 12 of the water heater 10, and meanwhile, the first sensor is electrically connected with the controller 13 to transmit the detected water temperature data to the controller 13; the other end of the return pipe 23 is connected with the inlet pipe of the water tank 24, so that when the hot water outlet pipe 12 is communicated with the return pipe 23 through the first control valve 30, the cold water in the hot water outlet pipe 12 can flow back to the water tank 24; the water tank inlet pipe 21 is connected with the cold water inlet pipe 11 and the external cold water source 60 through a second control valve 40, the second control valve 40 controls the water of the external cold water source 60 to directly flow into the water heater 10 or flow into the water tank 24, the second control valve 40 is electrically connected with the controller 13, and the controller 13 controls the switching of the second control valve 40; the second sensor and the electric heating module 25 are electrically connected with the controller 13, the second sensor is arranged in the water tank 24, senses the temperature in the water tank 24 and transmits water temperature data in the water tank 24 to the controller 13, and when the temperature in the water tank 24 is lower than a preset temperature, the controller 13 controls the electric heating module 25 to heat water in the water tank 24.
It should be noted that, in the embodiment, the water tank 24 is disposed near the external hot water outlet 50, and the external hot water outlet 50 is a hot water outlet of the faucet, so that the length of the water outlet pipe 22 of the water tank can be shortened as much as possible, water staying in the water pipe can be reduced, and waste of water resources when the hot water faucet is turned on can be avoided.
In addition, the water tank further includes a water level sensor (not shown) disposed in the water tank 24, the water level sensor is electrically connected to the controller 13, the water level sensor transmits the height data of the water level in the water tank 24 to the controller 13, and when the water level is lower than a predetermined value, the controller 13 controls the second control valve 40 to connect the external cold water source 60 to the water tank inlet pipe 21 to replenish the water in the water tank 24.
Furthermore, a third control valve 70 may be disposed at the water outlet of the water tank 24, the third control valve 70 is electrically connected to the controller 13, the third control valve 70 mainly controls the opening or closing of the water outlet of the water tank 24, before the first control valve 30 connects the hot water outlet pipe 12 to the external hot water outlet 50, the controller 13 controls the third control valve 70 to close the water outlet of the water tank 24, after the water in the water outlet pipe 22 of the water tank is discharged, the hot water outlet pipe 12 is connected to the external hot water outlet 50, and the time interval between the closing of the water outlet of the water tank 24 by the third control valve 70 and the connection of the first control valve 30 to the hot water outlet pipe 12 and the external hot water outlet 50 is about 0.5 to 2 seconds, depending on the length of the water outlet pipe 22 of the water tank, if the length of the water outlet pipe 22 of the water tank is longer, the time interval may also be set to be extended.
Example two
The present invention further provides a cold water recycling method according to the cold water recycling hot water system, which includes the following steps, but the following steps do not have a certain sequence relationship; (1) the first sensor is arranged at one end of the first control valve connected with the hot water outlet pipe, the water temperature of the hot water outlet pipe is continuously monitored, when a user opens the external hot water outlet, the first control valve is selectively switched according to the water temperature monitored by the first sensor, if the water temperature in the hot water outlet pipe is lower than a first preset temperature, the first control valve is communicated with the water outlet pipe of the water tank and the external hot water outlet, so that the water in the water tank flows to the external hot water outlet, and is communicated with the hot water outlet pipe and the water return pipe, so that the cold water in the original hot water outlet pipe and the water which is not heated to the first preset temperature flow to the water tank through the water return pipe, at the moment, as the hot water outlet pipe is communicated with the water return pipe, the hydraulic pressure ignition controller in the water heater ignites the burner under the condition that the water flows, heats the water flowing through the water heater, and the water flowing out of the hot water, or higher than the first preset temperature, the first control valve connects the hot water outlet pipe with the external hot water outlet; if the water temperature of the hot water outlet pipe is higher than a first preset temperature, the first control valve is communicated with the hot water outlet pipe and an external hot water outlet, namely the normal use state of the common water heater, at the moment, the water tank is not communicated with the water return pipe, and the water outlet of the water tank is in a closed state.
(2) When the external hot water outlet is closed, the water level sensor senses the water level in the water tank, and if the water level is lower than a first preset water level, the second control valve is opened to enable external cold water to flow into the water tank so as to supplement the water in the water tank; when the external hot water outlet is opened, the water level sensor senses the water level in the water tank, and if the water level is lower than a second preset water level, the water temperature is not heated to the first preset temperature by the water heater, so that the first control valve is not switched, and the second control valve needs to be opened, so that the external cold water flows into the water tank and flows to the external hot water outlet through the hot water outlet pipe of the water tank (at the moment, the temperature of the outflow water may be lower, or is close to the temperature of an external cold water source).
(3) In order to keep the water temperature of the user at a sufficient temperature when the external hot water outlet is opened next time, the second sensor senses the water temperature in the water tank under the condition that the external hot water outlet is closed, if the water temperature is lower than a second predicted temperature, the electric heating module is opened to heat the water in the water tank, and when the water is heated to a second preset temperature, the electric heating module is closed to carry out a heat preservation state.
Furthermore, a third control valve is arranged at the water outlet of the water tank, before the first control valve connects the external hot water outlet with the hot water outlet pipe, the third control valve closes the water outlet of the water tank first, and after the water in the water outlet pipe of the water tank is emptied, the hot water outlet pipe is connected with the external hot water outlet through the first control valve.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. The utility model provides a cold water recovery formula hot-water heating system, contains the water heater, the water heater contains cold water oral siphon, hot water outlet pipe and controller, its characterized in that:
the water storage device is connected with the first control valve and the second control valve; the water storage device comprises a water tank, a water tank inlet pipe, a water tank outlet pipe, a water return pipe, an electric heating module and a second sensor;
the first control valve is connected with the hot water outlet pipe, the water tank outlet pipe, one end of the water return pipe and the external hot water outlet to control a hot water source when the external hot water outlet discharges water, and the first control valve is electrically connected with the controller;
the first sensor is arranged at one end of the first control valve, which is connected with the hot water outlet pipe, and is electrically connected with the controller;
the other end of the water return pipe is connected with a water inlet pipe of the water tank;
the water inlet pipe of the water tank is connected with the cold water inlet pipe and an external cold water source through the second control valve, and the second control valve is electrically connected with the controller;
the second sensor and the electric heating module are electrically connected with the controller;
the water tank is arranged close to the external hot water outlet, and the external hot water outlet is a tap hot water outlet;
the water outlet of the water tank is further provided with a third control valve, and the third control valve is electrically connected with the controller.
2. A cold water recovery hot water system according to claim 1, wherein:
the water tank further comprises a water level sensor, and the water level sensor is electrically connected with the controller.
3. A cold water recovery method for a cold water recovery hot water system according to any one of claims 1 or 2, comprising the steps of:
(1) the method comprises the following steps that a first sensor senses the water temperature in a hot water outlet pipe, and if the water temperature in the hot water outlet pipe is lower than a first preset temperature, a first control valve is communicated with a water outlet pipe of a water tank and an external hot water outlet, and is communicated with the hot water outlet pipe and a water return pipe; if the water temperature of the hot water outlet pipe is higher than a first preset temperature, the first control valve is communicated with the hot water outlet pipe and the external hot water outlet;
(2) under the condition that the external hot water outlet is closed, the water level sensor senses the water level in the water tank, and if the water level is lower than a first preset water level, a second control valve is opened to enable external cold water to flow into the water tank; under the condition that the external hot water outlet is opened, the water level sensor senses the water level in the water tank, and if the water level is lower than a second preset water level, a second control valve is opened to enable external cold water to flow into the water tank;
(3) and under the condition that the external hot water outlet is closed, the second sensor senses the water temperature in the water tank, and if the water temperature is lower than a second predicted temperature, the electric heating module is started to heat the water in the water tank.
4. A cold water recovery method according to claim 3, wherein:
and a third control valve is arranged at the water outlet of the water tank, and the third control valve closes the water outlet of the water tank before the first control valve connects the external hot water outlet with the hot water outlet pipe.
CN201811235551.0A 2018-10-22 2018-10-22 Cold water recovery type hot water system and cold water recovery method Active CN109612109B (en)

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Application Number Priority Date Filing Date Title
CN201811235551.0A CN109612109B (en) 2018-10-22 2018-10-22 Cold water recovery type hot water system and cold water recovery method

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Application Number Priority Date Filing Date Title
CN201811235551.0A CN109612109B (en) 2018-10-22 2018-10-22 Cold water recovery type hot water system and cold water recovery method

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CN109612109B true CN109612109B (en) 2020-12-22

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110848984A (en) * 2019-11-27 2020-02-28 湖南海得利网络科技有限公司 Water heater corrugated pipe installation structure for directly supplying hot water and control method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11223385A (en) * 1998-02-06 1999-08-17 Matsushita Electric Works Ltd Co-generation system
CN202511477U (en) * 2012-03-19 2012-10-31 肖成超 Temperature-control water-saving device for water heater
CN203413833U (en) * 2013-08-12 2014-01-29 威能(北京)供暖设备有限公司 Water outlet system of gas water heater
CN103776156A (en) * 2014-01-23 2014-05-07 威能(北京)供暖设备有限公司 Gas water heater capable of outputting water at constant temperature
CN106482345A (en) * 2016-09-28 2017-03-08 西北工业大学 A kind of energy-saving and water-saving auxiliary device of storage-type electric water heater
CN106766231B (en) * 2017-03-07 2019-04-16 郑州职业技术学院 Shower system and its control method without cold water and Recovery of the hot water
CN106958128B (en) * 2017-03-09 2018-12-04 赵攸宁 Washing machine and its control method with hot water recovery system

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