CN215809375U - Novel zero cold water device - Google Patents

Novel zero cold water device Download PDF

Info

Publication number
CN215809375U
CN215809375U CN202121875611.2U CN202121875611U CN215809375U CN 215809375 U CN215809375 U CN 215809375U CN 202121875611 U CN202121875611 U CN 202121875611U CN 215809375 U CN215809375 U CN 215809375U
Authority
CN
China
Prior art keywords
water
zero
cold
cold water
actuator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202121875611.2U
Other languages
Chinese (zh)
Inventor
于国兴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Dexiang Electrical Equipment Co ltd
Original Assignee
Guangdong Dexiang Electrical Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Dexiang Electrical Equipment Co ltd filed Critical Guangdong Dexiang Electrical Equipment Co ltd
Priority to CN202121875611.2U priority Critical patent/CN215809375U/en
Application granted granted Critical
Publication of CN215809375U publication Critical patent/CN215809375U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

The utility model provides a novel zero-cold-water device, which relates to the technical field of water heaters. The zero-cold-water actuator provided by the utility model avoids the defects of large energy or resource loss, high gas cost and legionella breeding caused by long-term keeping of high-temperature water at 35-45 ℃ in a hot water pipe and a return water pipe of a gas water heater in a heating body selective heating mode, prolongs the service life of the hot water pipe, and can use hot water under the condition that a gas valve of the gas water heater is intermittently closed.

Description

Novel zero cold water device
Technical Field
The utility model relates to the technical field of water heaters, in particular to a novel zero-cold-water device.
Background
When a gas water heater or a solar water heater is used at home, clothes are usually polished before bathing, and hot water is needed for a period of time before showering, wherein the hot water is needed for 2 minutes and more than 5 minutes. The bath is still good in summer, and is relatively embarrassed in winter, water sprayed out is carefully avoided, the water temperature is continuously measured by hands, and the life should be a relaxed bath and becomes a thrilling adventure activity.
For better water use experience, as shown in fig. 1, the zero-cold water device pulls a return pipe from the tail end of the hot water pipe to the water heater, and then the circulation between the hot water pipe and the return pipe is realized through a water pump, so that the whole pipeline is always hot water, and the hot water can be released after a tap is opened for a few seconds.
In order to achieve the purpose that the hot water of the faucet is fast discharged, a circulating pump (or a water heater with a built-in circulating pump) needs to be additionally purchased, a water return pipe is connected to the tail end of a hot water pipeline and returns to the position of the water heater, the circulating pump can guarantee that the water temperature inside the hot water pipe and the water return pipe is always higher than the set temperature of the circulating pump through temperature sensing, the purpose that the hot water discharging speed of the faucet is fast is achieved, and the comfort level is improved (for example, if the temperature of the circulating pump is set to be 35 ℃, the water temperature inside the pipeline is always higher than 35 ℃, if the water temperature inside the pipeline is lower than 35 ℃, the circulating pump can run, water can circulate among the hot water pipe, the water return pipe and the water heater, water flows through the inside of the water heater and is heated until the water temperature inside the hot water pipe and the water return pipe is higher than the set value, and the water stops.
The purpose of quickly discharging hot water can be achieved by the above mode, but the following problems can be caused at the same time:
(1) the hot water pipeline and the return water pipeline keep high-temperature water at 35-45 ℃ for a long time, so that the energy loss is large, the gas cost is high, the energy is wasted, the service life of the pipeline is shortened, and meanwhile, the high-temperature water at 35-45 ℃ is also an environment for mass propagation of legionella;
(2) the gas valve of the gas water heater can not be closed, and zero cold water cannot be realized when no hot water exists after the gas valve is closed.
(3) The water return pipe is a pipe which is added more than a normal pipe, and resource waste is caused.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a novel zero-cooling water apparatus to solve the technical problems in the prior art that a water return pipe is pulled from the extreme end of a hot water pipe to return to a water heater, and then a water pump is used to realize circulation between the hot water pipe and the water return pipe, so as to achieve the purpose of fast hot water discharge, but energy loss is caused, the service life of a pipeline is reduced, and legionella is easy to breed.
In order to achieve the purpose, the utility model provides a novel zero-cold-water device, which comprises a plurality of zero-cold-water actuators, wherein the zero-cold-water actuators are arranged in parallel and are simultaneously communicated with a water outlet pipeline of a gas water heater, a heating body is arranged in each zero-cold-water actuator, when water flowing out of the water outlet pipeline of the gas water heater is cold water, the heating body is started, heated water flows out of the water outlet pipeline of the zero-cold-water actuators, when the water flowing out of the water outlet pipeline of the gas water heater is hot water, the heating body is not started, and hot water flow which is not heated by the heating body directly flows out of the water outlet pipeline of the zero-cold-water actuators.
According to a preferred embodiment, a three-way valve is arranged in the zero-cold-water actuator, a first path is communicated with a water outlet pipeline of the gas water heater, a second path is communicated with a water inlet of the heating body, and a third path is communicated with the water outlet pipeline of the zero-cold-water actuator.
According to a preferred embodiment, an infrared water flow sensing switch is arranged on a pipeline connecting the three-way valve and the heating body.
According to a preferred embodiment, an electric control system is further arranged in the zero-cold-water actuator, and the electric control system is simultaneously electrically connected with the heating body and the infrared water flow inductive switch.
According to a preferred embodiment, a constant temperature reversing valve is arranged on the water outlet pipeline of the zero-cold water actuator, and the constant temperature reversing valve is simultaneously positioned on the water outlet pipeline of the heating body and a pipeline communicated with the three-way valve.
According to a preferred embodiment, the system further comprises an electricity storage device, wherein a storage battery is arranged in the electricity storage device, and a power input end interface and a power output end interface are arranged at the same time, the power input end interface is communicated with an indoor power grid, and the power output end interface is communicated with the zero-cold-water actuator.
According to a preferred embodiment, a battery management system for controlling the storage battery to release and supplement electric energy is further arranged in the electric storage device.
According to a preferred embodiment, the zero-cold-water actuator is provided with a power supply interface, and the power supply interface is communicated with the power supply output end interface through a power supply line.
According to a preferred embodiment, the end of the outlet pipe of the zero-cold water actuator is provided with a shower or a faucet.
According to a preferred embodiment, the zero cold water actuator is located close to the shower or faucet.
The novel zero-cooling water device provided by the utility model has the following technical effects:
compared with the traditional method that the tail end of a hot water pipe is connected with a return water pipe and returns to a water heater to achieve quick hot water discharge, the zero-cold-water device is characterized in that a zero-cold-water actuator is installed at the tail end of the hot water pipe and is communicated with a water outlet pipeline of the gas water heater, meanwhile, a heating body is arranged in the zero-cold-water actuator, cold water in the water outlet pipeline of the gas water heater is heated through the heating body, the purpose of quick hot water discharge is achieved, hot water in the water outlet pipeline of the gas water heater does not need to be heated, the zero-cold-water actuator avoids the defects of large energy or resource loss, high gas cost and legionella breeding caused by the fact that the hot water pipe and the return water pipe of the gas water heater keep high-temperature water at 35-45 ℃ for a long time through a heating body selective heating mode, the service life of the hot water pipe is prolonged, and when a gas valve of the gas water heater is closed, hot water can be used for a short time, and the requirement of water for washing is met.
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 is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a piping diagram of zero cold water in the prior art;
fig. 2 is a schematic structural diagram of a zero-cooling water device according to an embodiment of the present invention.
Wherein, fig. 1-2:
1. a zero cold water actuator; 11. a heating body; 12. a three-way valve; 13. an infrared water flow inductive switch; 14. an electronic control system; 15. a thermostatic reversing valve; 16. a water outlet pipeline of the zero-cold-water actuator; 17. a power interface;
2. a water outlet pipeline of the gas water heater;
3. a gas water heater; 31. a cold water pipe; 32. a gas valve;
4. an electricity storage device; 41. a battery is stored; 42. a power input terminal interface; 43. a power supply output terminal interface; 44. a battery management system;
5. a shower head or a faucet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As described in the background art, the zero-cold-water device adopted in the prior art is that a return pipe is pulled from the tail end of a hot water pipe to return to a water heater, and then circulation between the hot water pipe and the return pipe is realized through a water pump, so that the whole pipeline is always hot water, and the hot water can be discharged after a tap is opened for a few seconds. Although this method can achieve the purpose of quickly discharging hot water, the following problems are caused: (1) the hot water pipeline and the return water pipeline keep high-temperature water at 35-45 ℃ for a long time, so that the energy loss is large, the gas cost is high, the energy is wasted, the service life of the pipeline is shortened, and meanwhile, the high-temperature water at 35-45 ℃ is also an environment for mass propagation of legionella; (2) the gas valve of the gas water heater can not be closed, and zero cold water cannot be realized when no hot water exists after the gas valve is closed. (3) The water return pipe is a pipe which is added more than a normal pipe, and resource waste is caused.
Based on the above, the utility model provides a novel zero-cold water device, compared with the prior art that the tail end of a hot water pipe is connected with a water return pipe and returns to a water heater to achieve rapid hot water discharge, the zero-cold water device is characterized in that a zero-cold water actuator is arranged at the tail end of the hot water pipe and is communicated with a water outlet pipeline of the gas water heater, a heating body is arranged in the zero-cold water actuator, cold water in the water outlet pipeline of the gas water heater is heated by the heating body, so that the purpose of rapid hot water discharge is achieved, hot water in the water outlet pipeline of the gas water heater does not need to be heated, the zero-cold water actuator avoids the defects of large energy or resource loss, high gas cost and breeding of legionella caused by the fact that the hot water pipe and the water return pipe of the gas water heater keep high temperature of 35-45 ℃ for a long time in a selective heating mode, and prolongs the service life of the hot water pipe, meanwhile, a gas valve of the gas water heater can be intermittently closed.
The technical solution of the present invention will be described in detail with reference to the accompanying specific drawing 1.
The zero-cold-water device provided by the utility model comprises a plurality of zero-cold-water actuators 1, wherein the zero-cold-water actuators 1 are arranged in parallel and are simultaneously communicated with a water outlet pipeline 2 of a gas water heater, namely the zero-cold-water device provided by the utility model is matched with the gas water heater 3 for use.
As shown in fig. 1, four zero-cold water actuators 1 may be provided, and other numbers may also be provided, all of which are within the protection scope of the present invention, and each zero-cold water actuator 1 may be connected to a shower head or a faucet 5, and may also be connected to other water outlet devices, as long as the zero-cold water actuator 1 is adopted, all of which are within the protection scope of the present invention.
It should be noted that, in order to heat the cold water in the water outlet pipe 2 of the gas water heater instantly and achieve the purpose of rapidly discharging hot water, the zero-cold-water actuator 1 of the present invention is installed at a position close to the shower head or the faucet 5.
As shown in fig. 1, a heating body 11 is arranged in the zero-cold water actuator 1, and the purpose of using the heating body 11 is to heat cold water in the water outlet pipe 2 of the gas water heater, that is, when the water outlet pipe 2 of the gas water heater flows through cold water, the heating body 11 is activated, heated water flows out from the water outlet pipe 16 of the zero-cold water actuator, when the water outlet pipe 2 of the gas water heater flows through hot water, the heating body 11 is not activated, and unheated water flows out from the water outlet pipe 16 of the zero-cold water actuator directly.
Further, as shown in fig. 1, a three-way valve 12 is disposed in the zero-cold-water actuator 1, the three-way valve 12 is a structure that is common in the prior art, and the present invention is not described in detail in this regard, and includes three paths, a first path is connected to the water outlet pipe 2 of the gas water heater, a second path is connected to the heating body 11, and a third path is connected to the water outlet pipe 16 of the zero-cold-water actuator. Namely, a cold water port of the zero-cold water actuator 1 is connected with a lower port of a three-way valve 12, an upper port of the three-way valve 12 is connected with an infrared water flow inductive switch 13 and then connected to a water inlet end of a heating body 11, a water outlet end of the heating body 11 is connected with a hot water end port of a constant temperature reversing valve 15, and a side port of the three-way valve 12 is connected with a cold water end port of the constant temperature reversing valve 15.
The pipeline that three-way valve 12 and heating body 11 are connected is equipped with infrared rivers inductive switch 13, and infrared rivers inductive switch 13 is used for monitoring the rivers condition, still is equipped with electrical system 14 in the zero cold water executor 1, and electrical system 14 is connected with heating body 11 and infrared rivers inductive switch 13 electricity simultaneously for opening and closing of infrared rivers inductive switch 13 and heating body 11 of control.
A constant temperature reversing valve 15 is arranged on a water outlet pipeline 16 of the zero cold water actuator, the constant temperature reversing valve 15 is simultaneously positioned on a pipeline communicated with the water outlet pipeline of the heating body 11 and the three-way valve 12, and the constant temperature reversing valve 15 can mix cold water and hot water. The lower end interface of the constant temperature reversing valve 15 is connected with a hot water outlet and then communicated to a faucet or a shower head through a water outlet pipeline 16 of a zero-cold water actuator.
The specific principle is as follows: when the temperature of the water flow is higher than the set temperature, for example, higher than 35 ℃ set by the thermostatic reversing valve, the water flow directly flows into the thermostatic reversing valve 15 through the three-way valve 12 and then flows out through the water outlet pipeline 16, and cannot flow into the infrared water flow inductive switch 13 and the heating body 11, and the heating body 11 cannot be started; when the temperature of rivers is less than 35 ℃, rivers can be partly through infrared rivers inductive switch 13 and heating body 11, and electrical system 14 can receive the rivers signal this moment, and electrical system 14 is after signal processing, starts heating body 11, realizes that heating body 11 is the heating of cold water, and rivers after the heating flow through constant temperature reversing valve 15 and the part rivers that are not heated through mixing flow into tap or gondola water faucet through outlet conduit 16.
Further, the system also comprises an electricity storage device 4, as shown in fig. 1, a storage battery 41 is arranged in the electricity storage device 4, and a power input end interface 42 and a power output end interface 43 are arranged at the same time, the power input end interface 42 is communicated with an indoor power grid, and the power output end interface 43 is communicated with the zero-cold-water actuator 1. A battery management system 44 for controlling the discharge and supplement of the electric energy from the storage battery 41 is also provided in the electric storage device 4. The zero-cold water actuator 1 is provided with a power supply interface 17, and the power supply interface 17 is communicated with the power supply output end interface 43 through a power line.
The specific process is as follows: when water flows into the zero-cold water actuator 1 from the cold water port, two paths are arranged in the flow direction of the water, the first path is that the water directly flows into the constant temperature reversing valve 15 from the three-way valve 12 without passing through the infrared water flow inductive switch 13, and the second path is that the water flows into the heating body 11 after passing through the infrared water flow inductive switch 13 and then flows out after being heated, and then flows into the constant temperature reversing valve 15.
The electric control system 14 of the zero-cold-water actuator 1 distributes the flow of two paths according to the water temperature at the position of the cold water port, specifically:
the working condition I is as follows: when the temperature of the cold water port is low, for example, at 20 ℃, a part of water is distributed to flow through the second path to be heated and then reach the constant temperature reversing valve 15, the other part of water flows through the first path to reach the constant temperature reversing valve 15, and the two parts are mixed in the constant temperature reversing valve 15 and then flow out.
Working conditions are as follows: when the water temperature of the cold water opening is higher, for example, 45 ℃, the equipment can distribute all water to reach the constant temperature reversing valve 15 after passing through the first path; then, the zero-cold water actuator 1 flows out, water does not pass through the second path any more, the infrared water flow inductive switch 13 does not receive a water flow signal, the heating body 11 cannot be started, and the electric energy storage device 4 cannot release electric energy.
Wherein, the electric energy required by the heating body 11 of the zero-cold water actuator 1 for heating water is provided by the electric storage device 4.
The gas water heater 3, the electricity storage equipment 4 and the zero-cold-water actuator 1 work in a unified mode as follows:
tap water flows through the gas water heater 3 through the cold water pipe 31, flows into the water outlet pipeline 2 of the gas water heater after being heated by the gas water heater 3, and flows into the zero-cold-water actuator 1 through the water outlet pipeline 2 of the gas water heater. In the process, the temperature of water flowing into the zero-cold water actuator 1 in the water outlet pipeline 2 of the gas water heater is relatively low, and the water can work in the zero-cold water actuator 1 according to the process of the working condition I. When the temperature of water flowing into the zero-cold-water actuator 1 along with the water outlet pipe 2 of the gas water heater gradually rises to above 40 ℃ (the zero-cold-water actuator 1 at the temperature node can be arranged), the zero-cold-water actuator 1 can work according to the process of the second working condition.
Because the installation position of the zero-cold water actuator 1 is close to the shower head or the faucet 5, when the shower head or the faucet 5 releases hot water, the hot water of the gas water heater 3 does not need to wait for the hot water to flow, the zero-cold water actuator 1 can heat the water in the hot water pipe and supply the water to the shower head or the faucet 5 for use, after the hot water of the gas water heater 3 reaches the zero-cold water actuator 1, the zero-cold water actuator 1 stops heating, and after internal conversion, the hot water of the gas water heater 3 is directly supplied to the shower head or the faucet 5. Therefore, the release time of cold water when the shower head or the water faucet 5 discharges hot water is shortened to be several seconds, and the effect of zero cold water is achieved. Namely, the zero-cold water actuator 1 which is reasonably designed and realized in the zero-cold water actuator 1 can control whether the heating body 11 heats water or not according to the water temperature, and the water temperature is not heated when being higher than the set temperature.
In the process of realizing the zero-cold water, due to the relay heating effect of the zero-cold water actuator 1, a water pipe does not need to be pulled back to the water heater in the prior mode, and partial materials can be saved. Meanwhile, the overall energy loss can be reduced without keeping the high water temperatures of the hot water pipe and the water return pipe, and the purpose of zero cold water can be achieved when the water in the hot water pipe is cold water. Meanwhile, because the water is not heated circularly, the hot water pipe cannot keep high-temperature water for a long time, the service life of the pipeline is prolonged, and bacteria are not easy to breed in the low-temperature water environment.
When the gas valve 32 is closed and the gas water heater 3 cannot work, the shower head or the faucet 5 can also emit a certain amount of hot water for use, the amount of the hot water which can be emitted is related to the stored electric energy of the electric storage device 4, and the problem of a small amount of water for hand washing and rinsing and the like can be solved under the condition that the gas valve 32 is not opened.
Compared with the original zero-cold-water scheme, on the premise of the same comfort level, the zero-cold-water device can save 1/3-1/2 water pipes, save 70% -80% of fuel gas consumption, prolong the service lives of the water pipes and the gas water heater 3 and improve the safety of using fuel gas.
In addition, in order to overcome the problem that the power of the heating body 11 is large or the power of the heating bodies 11 running simultaneously exceeds the load of an indoor power grid, the utility model adopts the electric storage device 4, for example, 220V voltage is converted into 380V voltage after passing through the electric storage device 4 to be used by the heating body 11, so that the electric storage device 4 provides electric energy for the zero-cold-water actuator 1, and the high power which cannot be output by the load of a household power grid can be output.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. The utility model provides a novel zero cold water device, its characterized in that, includes the zero cold water executor of a plurality of, the parallelly connected setting of zero cold water executor, and all communicate with gas heater's outlet conduit simultaneously, establish the heating member in the zero cold water executor, work as when gas heater's outlet conduit outflow water is cold water, the heating member starts, and rivers after the heating are followed zero cold water executor's outlet conduit flows, works as gas heater's outlet conduit outflow water is hot water, the heating member does not start, and the hot water stream that does not heat the heating member directly follows zero cold water executor's outlet conduit flows.
2. The novel zero-cold-water device according to claim 1, wherein a three-way valve is arranged in the zero-cold-water actuator, a first path is communicated with the water outlet pipeline of the gas water heater, a second path is communicated with the water inlet of the heating body, and a third path is communicated with the water outlet pipeline of the zero-cold-water actuator.
3. The novel zero-cold water device as claimed in claim 2, wherein an infrared water flow sensing switch is arranged on a pipeline connecting the three-way valve and the heating body.
4. The novel zero-cold water device as claimed in claim 3, wherein an electric control system is further arranged in the zero-cold water actuator, and the electric control system is simultaneously electrically connected with the heating body and the infrared water flow inductive switch.
5. The novel zero-cooling water device as claimed in claim 2, wherein a thermostatic reversing valve is arranged on the water outlet pipeline of the zero-cooling water actuator, and the thermostatic reversing valve is simultaneously positioned on the water outlet pipeline of the heating body and a pipeline communicated with the three-way valve.
6. The novel zero-cold water device according to claim 1, further comprising an electricity storage device, wherein a storage battery is arranged in the electricity storage device, and a power input port and a power output port are arranged in the electricity storage device, the power input port is communicated with an indoor power grid, and the power output port is communicated with the zero-cold water actuator.
7. The novel zero-cold water device as claimed in claim 6, wherein a battery management system for controlling the electric energy release and supplement of the electric energy from the storage battery is further arranged in the electric storage equipment.
8. The novel zero-cooling water device as claimed in claim 6, wherein the zero-cooling water actuator is provided with a power interface, and the power interface is connected with the power output end interface through a power line.
9. The novel zero-cold water device as claimed in any one of claims 1 to 8, wherein a shower or a faucet is arranged at the end of the outlet pipe of the zero-cold water actuator.
10. The novel zero cold water device of claim 9, wherein the zero cold water actuator is proximate to the shower or faucet.
CN202121875611.2U 2021-08-11 2021-08-11 Novel zero cold water device Active CN215809375U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121875611.2U CN215809375U (en) 2021-08-11 2021-08-11 Novel zero cold water device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121875611.2U CN215809375U (en) 2021-08-11 2021-08-11 Novel zero cold water device

Publications (1)

Publication Number Publication Date
CN215809375U true CN215809375U (en) 2022-02-11

Family

ID=80130523

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121875611.2U Active CN215809375U (en) 2021-08-11 2021-08-11 Novel zero cold water device

Country Status (1)

Country Link
CN (1) CN215809375U (en)

Similar Documents

Publication Publication Date Title
CN109737605B (en) Zero-cold-water preheating device for gas heating water heater and control method thereof
CN202254399U (en) Control device for hot water supply by matching solar water heater with electric or gas water heater
CN207907506U (en) Water heater cyclic control system
WO2021031596A1 (en) Water heater system
CN203131932U (en) Heating system combining solar energy and off-peak electricity
CN215809375U (en) Novel zero cold water device
CN113587451A (en) Zero-cold-water gas water heater with circulating pipeline provided with remote control electric valve
CN106152521B (en) Circulating device capable of self-circulating and water heater with circulating device
CN104676703A (en) Hybrid hot water system of gas heating pump
CN210425576U (en) Water heater system
CN113432309A (en) Novel zero cold water device
CN203131931U (en) Heating system combining solar energy and off-peak electricity
CN216779656U (en) Silicon wafer cleaning system
CN211146923U (en) Sustainable high-capacity water heater
CN205825402U (en) A kind of energy-saving and water-saving water heater
CN205843044U (en) Multifunctional intelligent environmental protection energy-conservation heat exchange storage type electric water heating system equipment
CN201311053Y (en) Solar-assisted gas water heater
CN108344032A (en) One kind being used for domestic hot water's coolant controlled intelligent domestic system
CN209558683U (en) It is distributed the heat storage type domestic hot-water circulatory system
CN220321418U (en) High-performance low-cost household water heat storage electric heating system
CN201724298U (en) Solar heating system
CN108916978B (en) Anti-scaling solar centralized water supply system
CN107560147B (en) Household air source heat pump hot water system assisted by gas wall-mounted boiler and control method thereof
CN216114728U (en) Zero-cold-water gas water heater with circulating pipeline provided with remote control electric valve
CN211316618U (en) Energy-saving control device of solar water heater

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant