WO2023015716A1

WO2023015716A1 - Shower system capable of being circularly preheated and control method therefor

Info

Publication number: WO2023015716A1
Application number: PCT/CN2021/124032
Authority: WO
Inventors: 蔡应麟; 徐兆火; 李华东; 梁创佳; 朱健齐
Original assignee: 蔡应麟
Priority date: 2021-08-12
Filing date: 2021-10-15
Publication date: 2023-02-16
Also published as: CN113606775A

Abstract

A shower system capable of being circularly preheated and a control method therefor. The shower system comprises a hot water generator (1), a shower device and a heat energy recovery device (2), wherein the shower device comprises a water separator (9), a shower head and a circulating preheating device; a water inlet of the water separator (9) is connected to a water output end of the hot water generator (1); a water intake end of the heat energy recovery device (2) is connected to a cold water pipe (6); the circulating preheating device comprises a water storage container (3), circulating water pipes and an one-way check valve (51); a water intake end of the water storage container (3) is connected to a water output end of the heat energy recovery device (2); the circulating water pipes include a first circulating water pipe (4) and a second circulating water pipe (5); a water output end of the water storage container (3) is connected to a water intake end of the hot water generator (1) by means of the first circulating water pipe (4), and the water output end of the hot water generator (1) is connected to a hot water pipe (8); a water intake end of the second circulating water pipe (5) and the water inlet of the water separator (9) are connected to the hot water pipe (8); and a water output end of the second circulating water pipe (5) is connected to the water intake end of the water storage container (3). The circulating preheating device is added to circularly preheat the water during the early stage of showering in advance under lower power conditions.

Description

A shower system capable of circulating preheating and its control method

technical field

The invention relates to the technical field of bathing, in particular to a bathing system capable of circulating preheating and a control method thereof.

Background technique

In response to environmental protection requirements, recovery of waste heat from bathing wastewater is an important research topic in the field of bathing technology.

At present, aiming at recovering waste heat from bathing wastewater, for example, a Chinese invention application with notification number CN111536694A discloses a bathing system. The solution includes a hot water generator, a bathing device, and a heat recovery device. The bathing device includes a water mixing valve, a shower nozzle, and a filtering device. The mixing valve includes a first water inlet, a second water inlet, and a mixing water outlet. The filtering device includes a filter. The sander and the secondary filter assembly; the bathing device also includes a water purifier bottom plate, the secondary filter assembly includes an elastic clip seat and a filter body, the filter body includes a tank body, and the elastic clip seat is fixed on the water purifier bottom plate with an upward facing The opening of the tank body, the elastic clip seat cooperates with the tank body of the tank body and clamps the tank body. The system heats cold water and preheated water through an instant hot water generator. When the system is used for the first time, since the heat energy recovery device cannot preheat the cold water, the water fed into the hot water generator is still Cold water, and in order to ensure instant heating of cold water, the power of the hot water generator in this patent will be too large, and at the same time in the initial short period of time, a certain amount of cold water needs to be discharged before hot water can be generated, which will waste part of the water .

At the same time, the existing water storage type bathing device has the following problems: after the hot water in the water storage tank has been used, it needs to be heated after a period of time before use, and it cannot be continuously used for a long time.

In view of the above requirements, it is necessary to propose a recirculating preheating bathing system and a control method thereof which operate stably and can provide hot water at the initial stage of bathing.

Contents of the invention

In order to solve the above technical problems, one of the objectives of the present invention is to provide a bathing system that can be circulated and preheated. By adding a circulation preheating device, the water at the initial stage of bathing can be preheated by circulation in advance under the condition of relatively low power. And combined with the heat energy recovery device, the preheated water can be continuously heated during the bathing process, so that the bathing system can solve the above-mentioned problems.

For realizing above-mentioned purpose of the invention, the technical scheme that the present invention takes is as follows:

A bathing system capable of circulating preheating, comprising a hot water generator, a bathing device, and a heat energy recovery device, the bathing device includes a water distributor, a shower nozzle, the water distributor includes a water inlet and at least one water outlet, the The water outlet is connected to one or more shower nozzles, the water inlet of the water distributor is connected to the water outlet of the hot water generator, the water inlet of the heat energy recovery device is connected to the cold water pipe, and the bathing device also includes A circulating preheating device, the circulating preheating device comprising:

A water storage tank, the water inlet end of the water storage tank is connected to the water outlet end of the heat energy recovery device;

A circulating water pipe, the circulating water pipe includes a first circulating water pipe and a second circulating water pipe, the water outlet end of the water storage tank is connected to the water inlet end of the hot water generator through the first circulating water pipe, and the hot water generator The water outlet end of the second circulating water pipe is connected to the hot water pipe, the water inlet end of the second circulating water pipe and the water inlet of the water separator are connected to the hot water pipe, and the water outlet end of the second circulating water pipe is connected to the water storage the water inlet end of the gallbladder;

A one-way check valve, the one-way check valve is arranged at the water inlet end of the second circulating water pipe or in the pipe of the second circulating water pipe or at the water outlet end of the second circulating water pipe.

Preferably, the water inlet end of the water storage tank is connected to the water outlet end of the heat recovery device; the circulating water pipe includes a first circulating water pipe and a second circulating water pipe, and the water outlet end of the water storage tank is connected to the heat The water inlet end of the water generator is connected through the first circulating water pipe, the water outlet end of the hot water generator is connected with the hot water pipe, the water inlet end of the second circulating water pipe is connected with the water inlet of the water distributor at the On the hot water pipe, the water outlet end of the second circulating water pipe is connected to the water inlet end of the water storage tank; the one-way check valve is set at the water inlet end of the second circulating water pipe or the second circulating water pipe In the pipe or the water outlet of the second circulating water pipe.

As preferably, the one-way check valve is a solenoid valve, and the solenoid valve can control the circulation of water in the second circulating water pipe. When the solenoid valve is closed, the water in the second circulating water pipe does not circulate, and the water in the water storage tank The water cannot be preheated by circulation.

Preferably, the water inlet end of the water storage tank is connected to the water outlet end of the heat energy recovery device through a preheated water outlet pipe, and the water outlet end of the second circulating water pipe is connected to the preheated water outlet pipe, The water outlet end of the second circulating water pipe communicates with the water inlet end of the water storage tank.

As more preferably, a three-way joint is provided on the preheating water outlet pipe, and the three-way joint includes a preheating water outlet, a first preheating water inlet and a second preheating water inlet, and the preheating The water outlet pipe includes a first preheated water outlet pipe connected to the preheated water outlet and a second preheated water outlet pipe connected to the first preheated water inlet, and the second preheated water inlet is connected to the The water outlet end of the second circulating water pipe is connected. When the water inlet of the water separator is closed, the water flow direction of the circulating preheating device is: the cold water or preheated water flowing out of the preheating water outlet pipe first flows into the water storage tank, and then the water in the water storage tank It flows into the hot water generator through the first circulating water pipe, and the water heated by the hot water generator flows through the hot water pipe and the second circulating water pipe in turn, and then flows into the preheated water outlet pipe, and finally the heated water is sent to the preheated water outlet pipe. Into the water storage tank, so as to realize the circulating preheating of the water in the water storage tank, so that the preheated water in the water storage tank reaches the set temperature.

Preferably, the water inlet of the water storage tank includes a first preheated water inlet and a second preheated water inlet, and the water outlet of the second circulating water pipe can be directly connected to the water storage tank. The first preheated water inlet port, the second preheated water inlet port is connected to the water outlet of the preheated water outlet pipe.

Preferably, a three-way joint is provided on the hot water pipe, the three-way joint includes a hot water inlet, a first hot water outlet, and a second hot water outlet, and the hot water inlet is connected to the hot water The water outlet end of the water pipe, the first hot water outlet is connected to the water inlet of the water distributor, and the second hot water outlet is connected to the water inlet of the second circulating water pipe.

Preferably, the bathing device further includes a water inlet valve, the water inlet valve includes a cold water inlet and a cold water outlet, the cold water inlet is externally connected to a cold water pipe, and the cold water outlet is connected to the inlet of the heat recovery device water end.

Preferably, the circulating preheating device further includes a water pump, and the water pump is arranged on the first circulating water pipe between the water outlet end of the water storage tank and the water inlet end of the hot water generator. The water pump is a micro-pump. When the cold water pressure is too low or the water in the water storage tank is filled with cold water pipes to stop water delivery, the water pump can send the water in the water storage tank to the hot water generator to make the cycle pre-heating The heating device can work normally, and circulates and preheats the water in the water tank.

As a preference, there are multiple water storage tanks, and the multiple water storage tanks can be arranged on the same line in the axial direction or parallel to each other on the axis, and the multiple water storage tanks are connected in series with each other. The water storage tank is connected by connecting water pipes. Setting multiple water storage tanks can select the number of specific water storage tanks according to actual use, so as to increase or decrease the total amount of water stored in the water storage tanks, thereby adapting to bathing systems of different sizes.

Preferably, the total water storage capacity of the water storage tank is 5-8L, which can ensure that the preheated water in the water storage tank can meet the short-term transitional use at the initial stage of bathing. When the water temperature in the water storage tank reaches the preheating temperature, turn on the water separator and select the shower nozzle for bathing. At this time, the shower nozzle flows out warm water suitable for the human body, which can avoid the situation that the instant water heater needs to be released for a period of time to produce hot water when it is used in the initial stage. The water in the water tank is heated by the hot water generator to reach the set temperature, so the power required by the hot water generator of the present application is less than that of the instant water heater, reducing the load on the circuit, so that the bathing system of the present application It can be used in old residential areas or scenarios with heavy circuit loads. When the preheated hot water in the water storage tank is reduced, the warm water preheated by the heat recovery device is sent into the water storage tank and heated by the hot water generator to generate hot water, thereby reducing the heating time of the hot water generator and Power, so that the bathing system of the present application can be used continuously for a long time, and overcome the problem that the existing water storage type bathing device needs to be heated after a period of time after the hot water in the water storage tank is used.

As more preferably, the total water storage capacity of the water storage tank is 7L. This capacity can meet the short-term transitional use in the initial stage of bathing.

Preferably, a preheated water temperature sensor is set in the water storage tank. Before bathing, the water temperature in the water storage tank is monitored in real time through the preheating water temperature sensor. The one-way check valve in the heating device is opened, so that the water in the water storage tank is circulated and preheated by the hot water generator to reach the set temperature. And when the water separator is opened, the one-way check valve is in the closed state during the water spraying process of the shower nozzle, and the water in the second circulating water pipe in the circulating preheating device does not circulate, so that the hot water sprayed by the shower nozzle is After the heat energy recovery device collects, the heat energy recovery device preheats the incoming cold water, heats it through the water storage tank and the hot water generation device, and then flows out from the shower nozzle.

Preferably, a liquid level sensor is also set in the water storage tank, and the liquid level sensor is used to sense the water level in the water storage tank, so that the water level in the water storage tank is always at the set value, and it is convenient to directly control the water level before bathing. The water in the water tank is preheated.

Preferably, a first temperature sensor and a second temperature sensor are respectively arranged at the water inlet end and the water outlet end of the heat energy recovery device. Setting the first temperature sensor and the second temperature sensor can measure the temperature of the cold water entering the heat energy recovery device and the temperature of the warm water preheated by the heat energy recovery device, so as to determine the heat energy recovery rate of the heat energy recovery device.

Preferably, the bathing system further includes a display device, the water inlet end and the water outlet end of the hot water generator are respectively provided with a third temperature sensor and a fourth temperature sensor, and the water inlet flowmeter is arranged in the first circulating water pipe , the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor and the water inflow flow meter are all electrically connected to the display device. The first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor are used to collect the temperature data of the water and transmit it to the display device for display. Water pump to increase the flow of the first circulating water pipe.

Preferably, the bathing system further includes a switch water valve, the switch water valve is arranged on the hot water pipe between the water inlet of the water distributor and the water outlet end of the hot water generator, and the switch A spray temperature sensor and an outlet water flow meter are also arranged between the water valve and the water separator. The switch water valve is used to open and close the hot water pipe to control the flow of hot water into the water separator, and the spray temperature sensor and the outlet water flow meter are used to measure the temperature and flow rate of the hot water entering the water separator respectively in real time.

Preferably, the bathing system further includes a mixing valve, the mixing valve includes a first water inlet, a second water inlet, and a mixing water outlet, and the first water inlet is connected to the cold water outlet through cold water The second water inlet is connected to the water outlet of the hot water generator, and the mixed water outlet is connected to the water inlet of the water separator.

Preferably, the water storage tank and the circulating water pipe are arranged in the same casing, the hot water generator is arranged above the casing, and the heat recovery device is arranged below the casing.

The second object of the present invention is to provide a control method for a circulating preheating bathing system. The bathing system includes a hot water generator, a bathing device, and a heat recovery device. The bathing device includes a water separator, a shower nozzle, The water separator includes a water inlet and at least one water outlet, the water outlet is connected to one or more shower nozzles, the water inlet of the water separator is connected to the water outlet of the hot water generator, and the heat recovery The water inlet end of the device is connected with a cold water pipe, and the bathing device also includes a circulating preheating device, and the control method includes the following steps:

Step S1. Before bathing, open the water inlet valve, and transfer the cold water through the heat energy recovery device to the water storage tank in the circulating preheating device through the external cold water pipe;

Step S2. Open the one-way check valve in the circulating preheating device, close the water separator, and send the water in the water tank through the first circulating water pipe of the circulating preheating device through the water pump or the water pressure during the cold water delivery process. The hot water generator, the water heated by the hot water generator flows through the hot water pipe and the second circulating water pipe of the circulating preheating device in sequence, and then flows into the water storage tank;

Step S3. Cycle step S2, so that the preheated water in the water tank reaches the set temperature;

Step S4. When the preheated hot water in the water tank in step S3 reaches the set temperature, open the water separator and select the shower nozzle. At this time, the controller of the bathing system receives the signal that the water separator is opened, and then the controller sends Turn off the electric signal of the one-way check valve, so that the one-way check valve is in a closed state, and the water circuit in the second circulating water pipe in the circulating preheating device is closed;

Step S5. When the shower nozzle in step S4 sprays the preheated water in the water storage tank, the sprayed preheated water is collected by the heat energy recovery device, and the incoming cold water is preheated by the heat energy recovery device. The water tank and the hot water generating device are heated and flow out from the shower nozzle, and the hot water sprayed from the shower nozzle is continuously collected by the circulating preheating device to continuously heat the cold water fed by the cold water pipe;

Step S6. When multiple people take a bath, one of the users closes the water distributor after bathing, and if the temperature of the preheated water in the water tank is lower than the set temperature before another user uses it, trigger The one-way check valve in the second circulating water pipe is opened, the circulating preheating device starts to work, and the preheated water in the water storage tank is sent to the hot water generator through the first circulating water pipe through the water pump, and after being heated by the hot water generator The water in turn flows through the hot water pipe and the second circulating water pipe and then flows into the water storage tank, so that the preheated water in the water storage tank reaches the set temperature;

Step S7. After all the users have finished bathing, turn off the power of the bathing system, so that the hot water generator and the circulation preheating device are in a completely closed state.

Preferably, in step S7, the closing duration value of the water separator is set, and if the closing time of the water separator exceeds the set value, the controller of the bathing system automatically closes the hot water generator and the circulating preheating device.

Compared with the prior art, the present invention has achieved beneficial technical effects:

1. Through the installed circulating preheating device, the cold water or preheated water flowing out of the preheated water outlet pipe first flows into the water storage tank, and then the water in the water storage tank flows into the hot water generator through the first circulating water pipe, The water heated by the hot water generator flows through the hot water pipe and the second circulating water pipe in turn, then flows into the preheated water outlet pipe, and finally the heated water is sent into the water storage tank by the preheated water outlet pipe, so as to realize the water storage The water in the tank is circulated and preheated so that the preheated water in the water storage tank reaches the set temperature, so that the preheated water in the water storage tank can meet the short-term transitional use in the initial stage of bathing. At the same time, because the water in the water storage tank is heated to the set temperature through the circulation of the hot water generator, the power required by the hot water generator of the present application is less than that of the instant water heater, reducing the load on the circuit, thereby making the application The shower system can be used in old residential areas or scenes with large circuit loads.

2. Through the water pump provided on the first circulating water pipe between the water outlet end of the water storage tank and the water inlet end of the hot water generator, when the water pressure of the cold water is too low or the water in the water storage tank is full When the cold water pipe stops sending water, the water pump can send the water in the water tank into the hot water generator, so that the circulation preheating device can work normally, and the water in the water tank is preheated in circulation.

3. The bathing system in the background technology patent is in the cold environment in the north. Due to the low temperature of the external environment, heat exchange occurs between the heat energy recovery device and the outside world. Due to the heat loss of the hot water, the sprayed water cannot reach the suitable temperature of the human body when the next user takes a bath again, thereby causing discomfort. In the bathing system of the present application, when multiple people are bathing at intervals, the circulation preheating device is in the open state during the time period when the water separator is closed, and when the water temperature in the water storage tank drops to the set value, the circulation preheating device starts Work, so that the water temperature in the water storage tank is always maintained at the set temperature, so that when the next user takes a bath, he only needs to open the shower nozzle to spray warm water from the shower nozzle. The water is circulated and heated by the hot water generator to reach the set temperature, so the power required by the hot water generator of the present application is less than that of the water heater in the background technology patent.

Description of drawings

Fig. 1 is the schematic diagram of waterway of embodiment one wherein of the present invention;

Fig. 2 is the waterway schematic diagram of wherein embodiment two of the present invention;

Fig. 3 is a schematic diagram of the front view direction structure of Embodiment 1 of the present invention;

Fig. 4 is a schematic diagram of the structure in the rear view direction of Embodiment 1 of the present invention;

Fig. 5 is a partial structural diagram of the front view direction of Embodiment 1 of the present invention;

Fig. 6 is a schematic structural view of place A in Fig. 5;

Fig. 7 is a partial structural diagram of the rear view direction of Embodiment 1 of the present invention;

Fig. 8 is a schematic structural view at B in Fig. 7;

Wherein, the technical characteristics indicated by each reference sign are as follows:

1. Hot water generator; 2. Heat recovery device; 3. Water tank; 31. Preheated water temperature sensor; 32. First water tank; 33. Second water tank; 34. Third water tank ;4, the first circulating water pipe; 41, the water pump; 42, the third temperature sensor; 43, the water inlet flow meter; 5, the second circulating water pipe; 51, the one-way check valve; 6, the cold water pipe; 61, the first Temperature sensor; 62, second temperature sensor; 7, preheated water outlet pipe; 8, hot water pipe; 81, electric protection wall; 82, fourth temperature sensor; 83, spray temperature sensor; 84, water outlet flowmeter; 9. Water separator; 91. Top nozzle; 92. Side nozzle; 93. Mobile nozzle; 911. Top nozzle; 912. Side nozzle; 913. Movable nozzle; 10. Switch water valve; 11. Mixing valve; 12, cold water connecting pipe; 13, controller; 14, housing; 141, upper housing; 142, lower housing; 1421, bath supplies; 15, upper rack; 16, lower rack.

Detailed ways

In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples, but the protection scope of the present invention is not limited to the following specific examples.

Embodiment one

Referring to Figures 1, 3, 4 and 5, this embodiment discloses a control method for a recirculating preheating bathing system. The bathing system includes a hot water generator 1, a bathing device, and a heat recovery device 2. The heat recovery device 2 It is the thermal energy recovery device 2 in the invention application of CN111536694A. The bathing device includes a water separator 9 and a shower nozzle. The water separator 9 includes a water inlet and at least one water outlet, and the water outlet is connected to one or more showers. Nozzles, the water outlet of the water distributor 9 in this embodiment is connected to three shower nozzles, which are respectively the top spray nozzle 911, the side spray nozzle 912 and the movable nozzle 913, and the top spray nozzle 911, the side spray nozzle 912 and the movable nozzle 913 respectively Connect the water outlet of the water separator 9 through the top nozzle 91, the side nozzle 92, and the moving nozzle 93; the water inlet of the water separator 9 is connected with the water outlet of the hot water generator 1, and the thermal energy The water inlet end of the recovery device 2 is connected to the cold water pipe 6, and the bathing device also includes a circulating preheating device, and the circulating preheating device includes: a water storage tank 3, a circulating water pipe and a one-way check valve 51, and the water storage The water inlet end of the tank 3 is connected to the water outlet end of the heat recovery device 2; the circulating water pipe includes a first circulating water pipe 4 and a second circulating water pipe 5, and the water outlet end of the water storage tank 3 is connected to the hot water generating The water inlet end of the device 1 is connected through the first circulating water pipe 4, the water outlet end of the hot water generator 1 is connected with the hot water pipe 8, the water inlet end of the second circulating water pipe 5 and the water inlet of the water separator 9 The water outlet is connected to the hot water pipe 8, and the water outlet end of the second circulating water pipe 5 is connected to the water inlet end of the water storage tank 3; the one-way check valve 51 is arranged on the second circulating water pipe 5 The water inlet end or the pipe of the second circulating water pipe 5 or the water outlet end of the second circulating water pipe 5. The water tank 3, the hot water generator 1 and the circulating water pipe are arranged in the same casing 14, the hot water generator 1 is arranged above the casing 14, and the heat recovery device 2 is arranged on the Below the housing 14. As shown in Figure 3, the housing 14 includes an upper housing 141 and a lower housing 142, and the water storage tank 3, the hot water generator 1 and the circulating water pipe are placed in the upper housing 141, so that the upper housing The body 141 can completely wrap the water storage tank 3, the hot water generator 1 and the circulating water pipe, making the whole bathing system more concise and beautiful; Above, an inner chamber for accommodating bathing articles 1421 is set in the lower casing 142, so as to facilitate taking out the bathing articles 1421 when taking a bath, the upper hanger 15 is arranged on the back side of the upper part of the upper casing 141, and the backside of the lower casing 142 is arranged The lower hanger 16, the upper hanger 15 and the lower hanger 16 can be hung on the wall or other fixed objects, so that the shower system can be stably placed on the ground to prevent it from moving; The junction of the hot water pipe 8 is also provided with an anti-electricity wall 81, and the anti-electricity wall 81 plays an anti-electricity protection effect.

The one-way check valve 51 is a solenoid valve, which can control the circulation of water in the second circulating water pipe 5. When the solenoid valve is closed, the water in the second circulating water pipe 5 does not circulate, and the water in the water storage tank 3 The water cannot be preheated by circulation.

The hot water pipe 8 is provided with a three-way joint, the three-way joint includes a hot water inlet, a first hot water outlet, and a second hot water outlet, and the hot water inlet is connected to the hot water pipe 8 The first hot water outlet is connected to the water inlet of the water separator 9 , and the second hot water outlet is connected to the water inlet of the second circulating water pipe 5 .

The bathing device also includes a water inlet valve, the water inlet valve includes a cold water inlet and a cold water outlet, the cold water inlet is externally connected to a cold water pipe 6, and the cold water outlet is connected to the water inlet of the heat recovery device 2 .

The bathing system also includes a switch water valve 10, the switch water valve 10 is arranged on the hot water pipe 8 between the water inlet of the water distributor 9 and the water outlet of the hot water generator 1, the A spray temperature sensor 83 and an outlet water flow meter 84 are also arranged between the switch water valve 10 and the water distributor 9 . The switch water valve 10 is used to open and close the hot water pipe 8 to control the flow of hot water into the water separator 9. The spray temperature sensor 83 and the outlet water flow meter 84 are used to measure the temperature and temperature of the hot water entering the water separator 9 in real time respectively. flow.

As shown in Figures 7 and 8, the water inlet end of the water storage tank 3 is connected to the water outlet end of the heat energy recovery device 2 through a preheated water outlet pipe 7, and the water outlet end of the second circulating water pipe 5 is connected to the On the preheated water outlet pipe 7, so that the water outlet end of the second circulating water pipe 5 communicates with the water inlet end of the water storage tank 3. The preheated water outlet pipe 7 is provided with a three-way joint, and the three-way joint includes a preheated water outlet, a first preheated water inlet and a second preheated water inlet, and the preheated water outlet pipe 7 It includes a first preheated water outlet pipe 7 connected to the preheated water outlet and a second preheated water outlet pipe 7 connected to the first preheated water inlet, the second preheated water inlet is connected to the The outlet end of the second circulating water pipe 5 is connected. When the water inlet of the water separator 9 is in the closed state, the water flow direction of the circulating preheating device is: the cold water or preheated water flowing out from the preheating water outlet pipe 7 first flows into the water storage tank 3, and then the water storage tank The water in 3 flows into the hot water generator 1 through the first circulating water pipe 4, and the water heated by the hot water generator 1 flows through the hot water pipe 8 and the second circulating water pipe 5 in sequence, then flows into the preheated water outlet pipe 7, and finally the preheated water The hot water outlet pipe 7 sends the heated water into the water storage tank 3, thereby realizing circulating preheating of the water in the water storage tank 3, so that the preheated water in the water storage tank 3 reaches a set temperature.

The circulating preheating device further includes a water pump 41 , and the water pump 41 is arranged on the first circulating water pipe 4 between the water outlet end of the water storage tank 3 and the water inlet end of the hot water generator 1 . The water pump 41 is a micro-pump. When the cold water pressure is too low or the water in the water storage tank 3 is filled and the cold water pipe 6 stops sending water, the water pump 41 can send the water in the water storage tank 3 to the hot water generator In step 1, the circulation preheating device can work normally, and the water in the water storage tank 3 is circulated and preheated.

As shown in Figures 5 and 6, one or more of the water storage tanks 3 can be provided. Arranged in parallel, a plurality of said water storage tanks 3 are connected in series, and every two of said water storage tanks 3 are connected by connecting water pipes. Setting multiple water storage tanks can select the number of specific water storage tanks according to actual use, so as to increase or decrease the total amount of water stored in the water storage tank 3, thereby adapting to bathing systems of different sizes. In this embodiment, three water storage tanks 3 are preferably provided, including a first water storage tank 32, a second water storage tank 33 and a third water storage tank 34. The three water storage tanks 3 are arranged in a manner parallel to each other with axes, wherein The water inlet end of the first water storage tank 32 is connected with the first preheated water outlet pipe 7, the water inlet end of the second water storage tank 33 is connected with the water outlet end of the first water storage tank 32 through a connecting water pipe, The water inlet end of the third water storage tank 34 is connected with the water outlet end of the second water storage tank 33 through a connecting water pipe, and the water outlet end of the third water storage tank 34 is connected with the water inlet end of the first circulating water pipe 4 . The water pump 41 is arranged below the water storage tank 3 and is located on one side of the water outlet of the third water outlet, so that the water pump 41 in the water storage tank 3 is conveniently inserted into the first circulating water pipe 4 .

The total water storage capacity of the water storage tank 3 is 5-8L, which can ensure that the preheated water in the water storage tank 3 can meet the short-term transitional use at the initial stage of bathing. When the water temperature in the water storage tank 3 reaches the preheating temperature , open the water separator 9 and select the shower nozzle to take a bath. At this time, the shower nozzle flows out warm water suitable for the human body, which can avoid the situation that the instant water heater needs to be released for a period of time to produce hot water when it is used in the initial stage. The water in the water bladder 3 is heated through the hot water generator 1 to reach the set temperature, so the power required by the hot water generator 1 of the present application is less than that of the instant water heater, which reduces the load on the circuit, thereby making the present application The shower system can be used in old residential areas or scenes with large circuit loads. When the preheated hot water in the water storage tank 3 is reduced by use, the warm water preheated by the heat energy recovery device 2 is sent into the water storage tank 3 and heated by the hot water generator 1 to generate hot water, thereby reducing the number of hot water generators. The heating time and power of 1 make the bathing system of the present application can be used continuously for a long time, and overcome the problem that the existing water storage type bathing device needs to be heated after a period of time after the hot water in the water storage tank is used. Preferably in the present embodiment, the total capacity of the water storage tank 3 is 7L. This capacity can meet the short-term transitional use in the initial stage of bathing.

A preheated water temperature sensor 31 is arranged in the water storage tank 3 . Before bathing, monitor the water temperature in the water tank 3 in real time through the preheated water temperature sensor 31, when the water separator 9 and the shower nozzle are in a closed state, and when the water temperature in the water tank 3 is lower than the set temperature , then the one-way check valve 51 in the circulating preheating device is opened, so that the water in the water tank 3 passes through the hot water generator 1 for circulating preheating to reach the set temperature.

The bathing system further includes a display device, and a first temperature sensor 61 and a second temperature sensor 62 are respectively arranged at the water inlet end and the water outlet end of the heat energy recovery device 2 . Setting the first temperature sensor 61 and the second temperature sensor 62 can measure the temperature of the cold water entering the heat energy recovery device 2 and the temperature of the warm water preheated by the heat energy recovery device 2 , thereby measuring the heat energy recovery rate of the heat energy recovery device 2 . The water inlet end and the water outlet end of the hot water generator 1 are respectively provided with a third temperature sensor 42 and a fourth temperature sensor 82, the first water circulation pipe 4 is provided with an inlet water flowmeter 43, and the first temperature sensor 61 , the second temperature sensor 62 , the third temperature sensor 42 , the fourth temperature sensor 82 and the water inflow flowmeter 43 are all electrically connected to the display device. The first temperature sensor 61, the second temperature sensor 62, the third temperature sensor 42 and the fourth temperature sensor 82 are used to collect the temperature data of the water, and transmit it to the display device for display. The water pump 41 on the circulating water pipe 4 is to increase the flow of the first circulating water pipe 4 .

When preparing to take a bath, first open the water inlet valve, transfer cold water from the heat recovery device 2 to the water storage tank 3 through the external cold water pipe 6, add cold water to the water storage tank 3 to a specified height, and then preheat the cycle The one-way check valve 51 in the device is in the open state, the water separator 9 is in the closed state, and the water in the water storage tank 3 flows into the hot water through the first circulating water pipe 4 through the water pump 41 or the water pressure in the cold water delivery process to generate 1, the water heated by the hot water generator 1 flows through the hot water pipe 8 and the second circulating water pipe 5 in sequence, then flows into the preheated water outlet pipe 7, and finally the heated water is sent into the water storage by the preheated water outlet pipe 7 In the water tank 3, the water in the water storage tank 3 is preheated in circulation, so that the preheated water in the water storage tank 3 reaches the set temperature, which can meet the short-term transitional use in the initial stage of bathing. After the preheated hot water in the water storage tank 3 reaches the set temperature, open the switch water valve 10 and the water separator 9 to select the shower nozzle, and the controller 13 of the bathing system receives the signal that the water separator 9 is opened, and then controls The device 13 sends out an electric signal to close the one-way check valve 51, so that the one-way check valve 51 is in a closed state, and the water in the second circulating water pipe 5 in the circulating preheating device does not circulate; After the outgoing hot water is collected by the heat energy recovery device 2, the heat energy recovery device 2 preheats the incoming cold water and then flows out from the shower nozzle after being heated by the water storage tank 3 and the hot water generation device, so as to realize the recovery of the waste heat of the waste water.

The control method of the shower system comprises the following steps:

Step S1. Before bathing, open the water inlet valve, and transfer the cold water through the heat energy recovery device 2 to the water storage tank 3 of the circulating preheating device through the external cold water pipe 6;

Step S2. Open the one-way check valve 51 in the circulating preheating device, close the water distributor 9, and send the water in the water tank 3 through the first circulating water pipe 4 through the water pump 41 or the water pressure during the cold water delivery process. The hot water generator 1, the water heated by the hot water generator 1 flows through the hot water pipe 8 and the second circulating water pipe 5 and then flows into the water storage tank 3;

Step S3. Cycle step S2, so that the preheated water in the water tank 3 reaches the set temperature;

Step S4. After the preheated hot water in the water tank 3 in the step S3 reaches the set temperature, open the water separator 9 to select the shower nozzle, and the controller 13 of the bathing system receives the signal that the water separator 9 is opened, Then the controller 13 sends an electric signal to close the one-way check valve 51, so that the one-way check valve 51 is in a closed state, and the water circuit in the second circulating water pipe 5 in the circulating preheating device is closed;

Step S5. After the shower nozzle in step S4 sprays the preheated water in the water storage tank 3, the sprayed preheated water is collected by the heat energy recovery device 2, and the cold water passed in is preheated by the heat energy recovery device 2. After being heated by the water storage tank 3 and the hot water generating device, it flows out from the shower nozzle, and the hot water sprayed by the shower nozzle is continuously collected by the circulating preheating device to continuously heat the cold water fed by the cold water pipe 6;

Step S6. When multiple people take a bath, one of the users closes the water distributor 9 after bathing, and if the temperature of the preheated water in the water tank 3 is lower than the set temperature before another user uses it, Then trigger the one-way check valve 51 in the second circulating water pipe 5 to open, the circulating preheating device starts to work, and the preheated water in the water storage tank 3 is sent to the hot water generator 1 through the first circulating water pipe 4 through the water pump 41 , the water heated by the hot water generator 1 sequentially flows through the hot water pipe 8 and the second circulating water pipe 5 and then flows into the water storage tank 3, so that the preheated water in the water storage tank 3 reaches the set temperature;

Step S7. After all the users have finished bathing, turn off the power of the bathing system, so that the hot water generator 1 and the circulation preheating device are in a completely closed state.

As preferably, in step S7, set the shut-off duration value of water divider 9, if the shut-off time of water divider 9 exceeds set value, then the controller 13 of bathing system closes hot water generator 1 and circulation preheating automatically The device prevents the user from forgetting to turn off the shower system after use, so that the cycle preheating device is in a continuous cycle preheating state.

Embodiment two

Based on Embodiment 1, the difference between this embodiment and Embodiment 1 lies in:

As shown in Figure 2, the bathing system also includes a mixing valve 11, the mixing valve 11 includes a first water inlet, a second water inlet, a mixing water outlet, the first water inlet and the cold water outlet The water outlet is connected through the cold water connecting pipe 12 , the second water inlet is connected with the water outlet of the hot water generator 1 , and the mixed water outlet is connected with the water inlet of the water separator 9 .

Embodiment three

The water inlet end of the water storage tank 3 includes a first preheated water inlet end and a second preheated water inlet end, and the water outlet end of the second circulating water pipe 5 can be directly connected to the first water storage tank 3 A preheated water inlet port, the second preheated water inlet port is connected to the water outlet of the preheated water outlet pipe 7 .

Embodiment four

A liquid level sensor is also arranged in the water storage tank 3, and the liquid level sensor is used to sense the water level in the water storage tank 3, so that the water level in the water storage tank 3 is always at a set value, so that it is convenient to directly adjust the water level before bathing. The water in the water tank 3 is preheated.

According to the disclosure and teaching of the above-mentioned specification, those skilled in the art to which the present invention belongs can also make changes and modifications to the above-mentioned embodiment. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the invention.

Claims

A bathing system capable of circulating preheating, comprising a hot water generator (1), a bathing device and a heat energy recovery device (2), the bathing device including a water separator (9), a shower nozzle, and the water separator ( 9) comprising a water inlet and at least one water outlet, the water outlet is connected to one or more shower nozzles, the water inlet of the water distributor (9) is connected to the water outlet of the hot water generator (1), the The water inlet end of the heat energy recovery device (2) is connected to the cold water pipe (6), and it is characterized in that the bathing device also includes a circulating preheating device, and the circulating preheating device includes:

A water storage tank (3), the water inlet end of the water storage tank (3) is connected to the water outlet end of the heat energy recovery device (2);

Circulating water pipe, the circulating water pipe includes a first circulating water pipe (4) and a second circulating water pipe (5), the water outlet end of the water storage tank (3) passes through the water inlet end of the hot water generator (1) The first circulating water pipe (4) is connected, the water outlet end of the hot water generator (1) is connected to the hot water pipe (8), the water inlet end of the second circulating water pipe (5) is connected to the water distributor (9 ) is connected to the hot water pipe (8), and the water outlet end of the second circulating water pipe (5) is connected to the water inlet end of the water storage tank (3);

A one-way check valve (51), the one-way check valve (51) is arranged on the water inlet end of the second circulating water pipe (5) or in the pipe of the second circulating water pipe (5) or in the second circulating water pipe ( 5) the water outlet.
The bathing system according to claim 1, characterized in that, the water inlet end of the water storage tank (3) is connected to the water outlet end of the heat energy recovery device (2) through a preheated water outlet pipe (7), so The water outlet end of the second circulating water pipe (5) is connected to the preheated water outlet pipe (7), so that the water outlet end of the second circulating water pipe (5) is connected to the inlet of the water storage tank (3) The water end is connected.
The bathing system according to claim 1, wherein the bathing device further comprises a water inlet valve, the water inlet valve includes a cold water inlet and a cold water outlet, and the cold water inlet is externally connected with a cold water pipe (6), The cold water outlet is connected to the water inlet end of the heat recovery device (2).
The bathing system according to claim 1, characterized in that, the circulation preheating device further comprises a water pump (41), and the water pump (41) is arranged at the water outlet end of the water storage tank (3) and the water heater On the first circulating water pipe (4) between the water inlet ends of the water generator (1).
The bathing system according to claim 1, characterized in that there are multiple water storage tanks (3), and the multiple water storage tanks (3) can be arranged co-linearly along the axial direction or arranged parallel to each other with axes, A plurality of said water storage bladders (3) are connected in series with each other, and every two of said water storage tanks (3) are connected through connecting water pipes.
The shower system according to claim 1, characterized in that a preheated water temperature sensor (31) is arranged in the water storage tank (3).
The bathing system according to claim 1, characterized in that a first temperature sensor (61) and a second temperature sensor (62) are respectively arranged at the water inlet end and the water outlet end of the heat energy recovery device (2).
The bathing system according to claim 7, characterized in that the bathing system further comprises a display device, and the water inlet end and the water outlet end of the hot water generator (1) are respectively provided with a third temperature sensor (42) and a third temperature sensor (42). Four temperature sensors (82), the water inlet flow meter (43) is set in the first circulating water pipe (4), the first temperature sensor (61), the second temperature sensor (62), the third temperature sensor (42 ) and the fourth temperature sensor (82) and the water inlet flowmeter (43) are all electrically connected with the display device.
The bathing system according to claim 1, characterized in that, the bathing system further comprises a switch water valve (10), and the switch water valve (10) is arranged at the water inlet of the water separator (9) and the On the hot water pipe (8) between the water outlets of the hot water generator (1), a spray temperature sensor (83) is also set between the switch water valve (10) and the water distributor (9) and outlet water flow meter (84).
The bathing system according to claim 1, characterized in that, the water storage tank (3) and the circulating water pipe are arranged in the same casing (14), and the hot water generator (1) is arranged in the Above the housing (14), the heat energy recovery device (2) is arranged below the housing (14).
A control method for a circulating preheating bathing system, the bathing system includes a hot water generator (1), a bathing device, and a heat energy recovery device (2), the bathing device includes a water separator (9), a shower nozzle, The water separator (9) includes a water inlet and at least one water outlet, the water outlet is connected to one or more shower nozzles, the water inlet of the water separator (9) is connected to the hot water generator (1) The water outlet is connected, the water inlet of the heat energy recovery device (2) is connected to the cold water pipe (6), it is characterized in that the bathing device also includes a circulating preheating device, and the control method includes the following steps:

Step S1. Before bathing, open the water inlet valve, and transfer the cold water through the heat energy recovery device (2) to the water storage tank (3) in the circulating preheating device through the external cold water pipe (6);

Step S2. Open the one-way check valve (51) in the circulating preheating device, close the water distributor (9), and transfer the water in the water tank (3) to The first circulating water pipe (4) of the circulating preheating device is sent to the hot water generator (1), and the water heated by the hot water generator (1) flows through the hot water pipe (8) and the second circulating water pipe of the circulating preheating device in sequence. The circulating water pipe (5) flows into the water storage tank (3) again;

Step S3. Cycle step S2, so that the preheated water in the water tank (3) reaches the set temperature;

Step S4. When the preheated hot water in the water tank (3) in step S3 reaches the set temperature, open the water separator (9) to select the shower nozzle, and the controller (13) of the shower system receives the water distribution The signal to open the device (9), and then the controller (13) sends an electric signal to close the one-way check valve (51), so that the one-way check valve (51) is in a closed state, and the second cycle preheating device The waterway in the circulating water pipe (5) is closed;

Step S5. After the shower nozzle in step S4 sprays the preheated water in the water tank (3), the sprayed preheated water is collected by the heat energy recovery device (2), and the heat energy recovery device (2) The incoming cold water is preheated and then heated by the water storage tank (3) and the hot water generating device, and then flows out from the shower nozzle, and the hot water sprayed from the shower nozzle is continuously collected by the circulating preheating device to realize the circulation of the cold water pipe (6). Continuous heating with incoming cold water;

Step S6. When multiple people take a bath, one of the users closes the water separator (9) after bathing, and if the temperature of the preheated water in the water tank (3) is lower than the set temperature After the temperature is fixed, the one-way check valve (51) in the second circulating water pipe (5) is triggered to open, and the circulating preheating device starts to work, and the preheated water in the water storage tank (3) is passed through the The first circulating water pipe (4) is sent into the hot water generator (1), and the water heated by the hot water generator (1) flows through the hot water pipe (8) and the second circulating water pipe (5) and then flows into the water storage tank ( 3), make the preheated water in the water tank (3) reach the set temperature;

Step S7. After all the users have finished bathing, turn off the power of the bathing system, so that the hot water generator (1) and the circulation preheating device are in a completely closed state.
The control method of the recirculating preheating bathing system according to claim 11, characterized in that in step S7, the closing time value of the water separator (9) is set, and if the closing time of the water separator (9) exceeds the set fixed value, then the controller (13) of the bathing system automatically closes the hot water generator (1) and the circulation preheater.