Zero-cold-water constant-temperature water heating device
By introducing water pressure detection and protection switches and human infrared sensors in the constant temperature hot water device, combined with the intelligent control motherboard, the problem of air rotation of existing devices in the case of water stopping, lack of water or water pressure, and realizing the constant temperature water supply water supply. , Improve the comfort and energy saving of the device.
Patent Information
- Application Number
- CN202420750860.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The existing constant temperature hot water device may cause the water pump to idle and damage the device when it is shut down, lack of water or insufficient water pressure. At the same time, the temperature is not constant during the use of hot water, which makes it poor comfort and energy saving.
Designed a zero -cold water constant temperature hot water device, including water pressure detection and protection switch, human infrared sensor, and intelligent control motherboard. By detecting water pressure signals and human existence signals, controlling the actions of water pumps and valves to ensure that the water is stopped, lacking When water or water pressure is insufficient, the water pump is prevented from being emptied and water supply is achieved.
It effectively prevents the water pump from idling under water outage, water shortage or insufficient water pressure, protects the device, and realizes constant temperature water supply, improving comfort and energy saving.
Smart Images
Figure CN222393081U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of constant temperature water supply, in particular to a zero cold water constant temperature hot water device. Background Art
[0002] At present, the hot water return device includes a circulating water pump and water inlet and outlet interfaces. Due to the lack of temperature balance buffer space, the water heater has the problem of alternating between hot and cold during the initial cold water heating process. At the same time, the operating control modes include temperature control mode, timing mode and water control mode.
[0003] Among them, the temperature control mode works 24 hours a day according to the set return water temperature, which is relatively comfortable, but the cost of use is high, and the temperature is not constant during the use of hot water; the timing mode works according to the temperature control mode according to the time period. Due to the differences in living habits and the work and rest time of family members, the comfort of use is poor and the cost of use is also high, and the temperature is not constant during the use of hot water; the water control mode, that is, every time there is a need for hot water, the hot water faucet must be turned on to let the water flow for 2-6 seconds, and then wait for a few minutes before hot water is available. It is energy-saving but troublesome to use, and the convenience of use is extremely poor, and the temperature is not constant during the use of hot water. Existing constant temperature hot water devices cannot detect water pressure, and idling in the state of water outage, water shortage or insufficient water pressure will damage the device. Utility Model Content
[0004] In view of the defects in the prior art, the utility model provides a zero-cold-water constant-temperature hot water device, which can prevent idling in the state of water outage, water shortage or insufficient water pressure, and play a role in protecting the device.
[0005] The utility model provides a zero cold water constant temperature hot water device, comprising a shell, in which an insulated water tank, a control mainboard, an internal water circuit unit, a water tank water temperature sensor and a return water temperature sensor are arranged, the internal water circuit unit is connected to the insulated water tank, an external hot water inlet, a cold water inlet, a circulating heating outlet, a constant temperature hot water outlet and a return water inlet are arranged outside the shell, the internal water circuit unit comprises an external hot water inlet pipeline, a cold water inlet pipeline, a circulating heating outlet pipeline, a constant temperature hot water outlet pipeline and a return water inlet pipeline, The external hot water inlet is connected to the external hot water inlet pipeline, the cold water inlet is connected to the cold water inlet pipeline, the circulating heating outlet is connected to the circulating heating outlet pipeline, the constant temperature hot water outlet is connected to the constant temperature hot water outlet pipeline, the return water inlet is connected to the return water inlet pipeline, the return water temperature sensor is arranged on the return water inlet pipeline, and a water pressure detection protection switch is arranged on the cold water inlet pipeline. The water pressure detection protection switch, the water tank water temperature sensor and the return water temperature sensor are electrically connected to the control main board respectively.
[0006] Furthermore, the circulating heating water outlet pipeline is connected to the insulated water tank through a four-way pipe fitting, a first one-way valve and a constant temperature circulating water pump, the constant temperature circulating water pump is electrically connected to the control main board, and the cold water inlet pipeline is connected to the four-way pipe fitting.
[0007] Furthermore, the constant temperature hot water outlet pipeline includes a water flow switch detector, a second one-way valve, a thermostatic valve, a bypass electric valve and a return water circulation pump. The water flow switch detector is respectively connected to one end of the second one-way valve and the bypass electric valve, the thermostatic valve is respectively connected to the four-way pipe fitting, the other end of the second one-way valve and one end of the return water circulation pump and connected to the insulated water tank, the bypass electric valve is connected to the insulated water tank through the return water circulation pump, and the return water circulation pump is electrically connected to the control main board.
[0008] Furthermore, the return water inlet pipeline is connected to the insulated water tank through a third one-way valve.
[0009] Furthermore, a central manual regulator is provided on the outer surface of the shell, and the central manual regulator is connected to the control mainboard.
[0010] Furthermore, the device also includes a human infrared sensor, which is electrically connected to the control mainboard.
[0011] Furthermore, the device also includes a power module, and the power module is electrically connected to the control mainboard.
[0012] Beneficial effects of the utility model:
[0013] The utility model provides a zero cold water constant temperature hot water device, which is provided with a water pressure detection protection switch to detect the water pressure of the incoming water, thereby preventing the water pump from idling in the state of water outage, water shortage or insufficient water pressure, and playing the role of a protective device. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.
[0015] Figure 1 A schematic structural diagram of a zero-cold-water constant-temperature hot water device provided in the first embodiment of the utility model. DETAILED DESCRIPTION
[0016] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.
[0017] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.
[0018] Please refer to Figure 1 The first embodiment of the utility model provides a zero cold water constant temperature hot water device, including a shell 1, in which an insulated water tank 2, a control mainboard 3, an internal water circuit unit, a water tank water temperature sensor 4 and a return water temperature sensor 5 are arranged, the internal water circuit unit is connected to the insulated water tank 2, and an external hot water inlet 6, a cold water inlet 7, a circulating heating outlet 8, a constant temperature hot water outlet 9 and a return water inlet 10 are arranged outside the shell, and the internal water circuit unit includes an external hot water inlet pipeline, a cold water inlet pipeline, a circulating heating outlet pipeline, a constant temperature hot water outlet pipeline and a return water inlet pipeline. The external hot water inlet is connected to the external hot water inlet pipeline, the cold water inlet is connected to the cold water inlet pipeline, the circulating heating outlet is connected to the circulating heating outlet pipeline, the constant temperature hot water outlet is connected to the constant temperature hot water outlet pipeline, the return water inlet is connected to the return water inlet pipeline, the return water temperature sensor 5 is arranged on the return water inlet pipeline, the water tank water temperature sensor is arranged in the water tank, and the cold water inlet pipeline is provided with a water pressure detection protection switch 11, the water pressure detection protection switch 11, the water tank water temperature sensor 4 and the return water temperature sensor 5 are respectively electrically connected to the control mainboard. The device also includes a power module, and the power module is electrically connected to the control mainboard. Figure 1 The arrow symbol in represents the direction of water flow. The water pressure detection protection switch detects the water pressure at the cold water inlet. In the case of water shortage, water outage or insufficient water pressure, the water pressure signal is abnormal. The water pressure detection protection switch transmits the water pressure signal to the control main board. When the control main board receives the abnormal water pressure signal, it will disconnect the power supply to stop the zero cold water constant temperature hot water device from working, thus playing the role of protecting the device.
[0019] An external central manual regulator connected to the control mainboard is provided on the outer surface of the shell to realize operations such as required temperature setting.
[0020] The device also includes a human infrared sensor, which is electrically connected to the control mainboard and is used to sense whether a human body is in a hot water use area.
[0021] The circulating heating water outlet pipeline is connected to the insulated water tank 2 through a four-way pipe fitting 12 , a first one-way valve 13 and a constant temperature circulating water pump 14 . The constant temperature circulating water pump 14 is electrically connected to the control main board 3 . The cold water inlet pipeline is connected to the four-way pipe fitting 12 .
[0022] The constant temperature hot water outlet pipeline includes a water flow switch detector 15, a second one-way valve 16, a thermostatic valve 17, a bypass electric valve 18 and a return water circulation pump 19. The water flow switch detector 15 is respectively connected to one end of the second one-way valve 16 and the bypass electric valve 18. The thermostatic valve 17 is respectively connected to the four-way pipe 12, the other end of the second one-way valve 16 and one end of the return water circulation pump 19 and connected to the insulation water tank 2. The bypass electric valve 18 is connected to the insulation water tank 2 through the return water circulation pump 19, and the return water circulation pump 19 is electrically connected to the control main board 3. The return water inlet pipeline is connected to the insulation water tank 2 through the third one-way valve 20.
[0023] The user pre-sets the required water temperature through the central manual regulator, assuming it is set to 45°C. When the user enters the hot water use area, the human infrared sensor senses the human signal and sends the human signal to the control mainboard 3. The control mainboard 3 controls the power module to be turned on, and the water pressure detection protection switch 11 sends the water pressure signal to the control mainboard 3. When the water pressure signal is abnormal, the control mainboard 3 disconnects the power module. When the water pressure detection signal is normal, the return water temperature sensor 5 will start to detect whether the return water pipe water temperature reaches the set temperature requirement. If the set temperature requirement is reached, the control mainboard 3 controls the return water circulation pump 19 to stop working; if it is lower than the set temperature, the return water circulation pump 19 will stop working. If the temperature requirement is met, the control mainboard 3 starts the return water circulation pump to extract the hot water from the insulation water tank through the side-acting electric valve 18, the water flow switch detector 15 and the hot water outlet, and sends the hot water stored in the insulation water tank, and sends the cold water in the water pipe back to the insulation water tank. The water tank water temperature sensor 4 detects the temperature of the water in the insulation water tank and sends the temperature signal to the control mainboard 3. If the water temperature of the insulation water tank is lower than the set temperature, the control mainboard 3 controls the constant temperature circulation water pump 14 to start, and the constant temperature circulation water pump 14 heats the water in the insulation water tank 2 through the constant temperature circulation water pump 14, the second one-way valve 13, the four-way pipe fitting 12, and the circulation heating outlet 8 to the heater. The return water temperature sensor 5 sends the temperature of the return water pipe to the control mainboard 3. When the return water temperature reaches the set temperature requirement, the control mainboard 3 controls the return water circulation pump 19 to stop working. When there is a demand for hot water, cold water enters through the cold water inlet 7, enters the heater through the four-way pipe fitting 12 and the circulating heating outlet 8 for heating, enters the insulated water tank 2 through the hot water inlet 6, and is mixed with the cold water passing through the four-way pipe fitting 12 to form 45°C hot water through the thermostatic valve 17, the second one-way valve 16, the water flow detector 15 and the constant temperature outlet 9 to be sent to the water point. The cold water entering from the four-way pipe fitting 12 is mixed with the hot water above 45°C sent from the water tank through the thermostatic valve 17 to form 45°C hot water, the second one-way valve 16, the water flow switch detector 15, the constant temperature hot water outlet 9 to be sent to the water point. This ensures that when people need hot water, they always have a comfortable and suitable supply of hot water at 45°C. When no one enters the hot water supply area, the system is in a dormant state, achieving zero loss.
[0024] This technical solution sets a water pressure detection protection switch to detect the water pressure of the incoming water, which can prevent the water pump from idling when there is a water outage, water shortage or insufficient water pressure, thereby protecting the device. A human infrared sensor is set in the hot water use area to trigger the device to work in advance when the user needs hot water, without the need for real-time and scheduled work, and has good energy saving performance; the control mainboard controls the valves and water pumps on the corresponding pipelines according to the data collected by each sensor to achieve constant temperature of hot water and improve the comfort of domestic hot water use; when using it, the user does not need to wait, that is, hot water is available as soon as it is turned on. The entire solution takes into account both convenience and energy saving.
[0025] Here, it should be noted that the functions, algorithms, methods, etc. involved in the present utility model are merely conventional adaptive applications of the prior art. Therefore, the improvement of the prior art by the present utility model is essentially the connection relationship between the hardware, rather than the functions, algorithms, and methods themselves. That is, although the present utility model involves some functions, algorithms, and methods, it does not include improvements to the functions, algorithms, and methods themselves. The description of the functions, algorithms, and methods in the present utility model is for the purpose of better explaining the present utility model so as to better understand the present utility model.
[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.
Claims
1. A zero cold water constant temperature hot water device, comprising a housing, characterized in that: An insulated water tank, a control mainboard, an internal water circuit unit, a water tank water temperature sensor and a return water temperature sensor are arranged in the shell; the internal water circuit unit is connected to the insulated water tank; an external hot water inlet, a cold water inlet, a circulating heating outlet, a constant temperature hot water outlet and a return water inlet are arranged outside the shell; the internal water circuit unit comprises an external hot water inlet pipeline, a cold water inlet pipeline, a circulating heating outlet pipeline, a constant temperature hot water outlet pipeline and a return water inlet pipeline; the external hot water inlet is connected to the external hot water inlet pipeline, the cold water inlet is connected to the cold water inlet pipeline, the circulating heating outlet is connected to the circulating The heating water outlet pipeline is connected, the constant temperature hot water outlet is connected to the constant temperature hot water outlet pipeline, the return water inlet is connected to the return water inlet pipeline, the return water temperature sensor is arranged on the return water inlet pipeline, and the cold water inlet pipeline is provided with a water pressure detection protection switch, the water pressure detection protection switch, the water tank water temperature sensor and the return water temperature sensor are electrically connected to the control main board respectively; the circulating heating water outlet pipeline is connected to the insulated water tank through a four-way pipe fitting, a first one-way valve and a constant temperature circulating water pump, the constant temperature circulating water pump is electrically connected to the control main board, and the cold water inlet pipeline is connected to the four-way pipe fitting.
2. The zero cold water constant temperature hot water device according to claim 1, characterized in that: The constant temperature hot water outlet pipeline includes a water flow switch detector, a second one-way valve, a thermostatic valve, a bypass electric valve and a return water circulation pump. The water flow switch detector is respectively connected to one end of the second one-way valve and the bypass electric valve. The thermostatic valve is respectively connected to the four-way pipe fitting, the other end of the second one-way valve and one end of the return water circulation pump and connected to the insulated water tank. The bypass electric valve is connected to the insulated water tank through the return water circulation pump, and the return water circulation pump is electrically connected to the control main board.
3. The zero cold water constant temperature hot water device according to claim 1, characterized in that: The return water inlet pipeline is connected to the thermal insulation water tank through a third one-way valve.
4. The zero cold water constant temperature hot water device according to claim 1, characterized in that: A central manual regulator is arranged on the outer surface of the shell, and the central manual regulator is connected to the control mainboard.
5. The zero cold water constant temperature hot water device according to claim 1, characterized in that: The device also includes a human infrared sensor, which is electrically connected to the control mainboard.
6. The zero cold water constant temperature hot water device according to claim 1, characterized in that: The device also includes a power module, and the power module is electrically connected to the control mainboard.