CN116412543A

CN116412543A - Water heater

Info

Publication number: CN116412543A
Application number: CN202211198657.4A
Authority: CN
Inventors: 陈如意; 方欢
Original assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Haier Smart Home Co Ltd
Priority date: 2021-12-31
Filing date: 2022-09-29
Publication date: 2023-07-11
Also published as: CN115405727A; CN115405728A; CN217815129U; CN116412277A; CN116412531A; CN115406115A; CN116412541A; CN115388204A; CN115406105A; CN116412530A

Abstract

The invention discloses a water heater, comprising: the shell is provided with a water inlet main pipe and a water outlet main pipe; the front panel and the rear panel of the combustion chamber are provided with extension parts, and an installation area is formed between the extension parts; the heat exchanger comprises a heat exchange tube and two end plates, the two end plates are oppositely arranged, and the heat exchange tube penetrates through the two end plates; a fume collecting hood, on which a fan is arranged; the water inlet module comprises a valve body, a valve assembly and a driver, wherein the valve body is provided with a first water port, a second water port and a third water port, the valve assembly is arranged in the valve body, and the driver is configured to drive the valve assembly to act so as to adjust the opening degrees of the second water port and the third water port. The water flow is accurately regulated through the water inlet module so as to reduce the fluctuation of the water temperature of the water outlet of the water heater, the temperature control effect of the water heater is improved, and meanwhile, the heat exchanger has no shell and no winding pipe, so that the integral structure of the heat exchanger is effectively simplified, and the manufacturing cost of the gas water heater is further reduced.

Description

Water heater

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a water heater.

Background

At present, the water heater is a household appliance commonly used in daily life of people. The water heater is classified into a gas water heater, an electric water heater, and the like, wherein the gas water heater is widely used because of its convenient use. Conventional gas water heaters typically include a burner that combusts gas in the combustion chamber to heat water flowing through the heat exchanger, a combustion chamber, a heat exchanger, and a smoke collection cover, where the smoke is discharged outdoors by a fan in the smoke collection cover.

The heat exchanger in the gas water heater is an important component part, and the heat exchanger generally comprises a heat exchange tube, wherein part of the heat exchange tube penetrates through a shell above the combustion chamber, and part of the heat exchange bin is wound outside the shell above the combustion chamber. However, in the actual assembly process, the overall structure of the heat exchanger is complex, and the assembly difficulty is high. In addition, in the actual use process, when the water is turned off for a short time and the hot water is reused, there is a change in the water temperature. Taking a gas water heater as an example, in the normal use process, when a user turns off water and turns on again, the water temperature is increased, then is reduced and is stabilized, and the use experience of the user is further affected.

In view of this, how to design a water heater technology with low manufacturing cost and good temperature control effect is a technical problem to be solved by the invention.

Disclosure of Invention

The embodiment of the application provides a water heater, through the accurate regulation discharge of water module of intaking in order to reduce the play water temperature fluctuation of water heater, improved the accuse temperature effect of water heater, simultaneously, the heat exchanger does not have the casing and does not have the design of winding the pipe to the overall structure of effectual simplification heat exchanger, and then realize reducing gas heater's manufacturing cost.

In order to achieve the technical purpose, the invention is realized by adopting the following technical scheme:

In one aspect, the present invention provides a water heater comprising:

the shell is provided with a water inlet main pipe and a water outlet main pipe;

the front panel and the rear panel of the combustion chamber are provided with upwards extending extension parts, and an installation area is formed between the two extension parts;

the heat exchanger comprises a heat exchange tube and two end plates, wherein the two end plates are oppositely arranged, and the heat exchange tube penetrates through the two end plates;

a fume collecting hood, on which a fan is arranged;

the water inlet module comprises a valve body, a valve assembly and a driver, wherein the valve body is provided with a first water port, a second water port and a third water port, the valve assembly is arranged in the valve body, and the driver is configured to drive the valve assembly to act so as to adjust the opening degrees of the second water port and the third water port;

the combustion chamber, the heat exchanger, the fume collecting hood and the water inlet module are arranged in the shell, the fume collecting hood is arranged above the heat exchanger, the heat exchanger is arranged in the installation area, the extension part is connected with the lower edge of the fume collecting hood, and the end plate is connected between the fume collecting hood and the side plate on the corresponding side of the combustion chamber;

In addition, the first water port is connected with the water inlet main pipe, the second water port is connected with the water inlet end of the heat exchange pipe, and the hot water end of the heat exchange pipe and the third water port are respectively connected with the water outlet main pipe.

In one embodiment of the present application, the valve assembly includes a valve rod, a valve sleeve and a plug, wherein the valve sleeve and the plug are sequentially and fixedly arranged on the valve rod, and the plug is slidably sleeved on the valve rod and is arranged near one end of the valve rod; the driver is arranged on the valve body and is configured to drive the valve rod to rotate and drive the valve rod to move along the axis; the valve rod is rotatably arranged on the valve body and can move relative to the valve body in the rotating process, the valve sleeve and the plug are positioned in the valve body, the valve sleeve is arranged on one side of the second water port and used for adjusting the opening of the second water port, and the plug is arranged opposite to the third water port and used for adjusting the opening of the third water port; the valve rod is provided with a baffle and a spring, the plug is positioned between the baffle and the spring, and the spring is abutted against the valve body.

In an embodiment of the present application, the first water port and the second water port are disposed at two sides of the valve body, and the third water port is disposed at an end of the valve body; the valve sleeve is arranged at one side of the first water port and is also used for changing the opening degree of the first water port.

In one embodiment of the present application, the valve sleeve has a central bore opposite and in communication with the third water port; the side wall of the valve sleeve is provided with a communication groove communicated with the central hole, the communication groove is used for communicating the first water through hole, the central hole and the second water through hole to form the water inlet flow channel, and the communication groove is also used for communicating the first water through hole, the central hole and the third water through hole to form the bypass flow channel.

In this application an embodiment, be equipped with the axle sleeve in the valve body, the axle sleeve is including installation department and the spacing portion that sets gradually, the installation department embedded in the valve body and with the internal surface of valve body is fixed, the installation department have with valve rod threaded connection's screw hole, the valve rod passes the axle sleeve.

In an embodiment of the application, be provided with first water pipe, second water pipe and third water pipe on the valve body, first water pipe forms first water port, the second water pipe forms the second water port, the third water pipe forms the third water port.

In an embodiment of the present application, a first partition plate is disposed in the second water pipe, and the second water port and the fourth water port are disposed on the first partition plate; the side wall of the valve sleeve is provided with a water flow passage communicated with the communication port; the water flow passage is configured to communicate with the fourth water port with the valve housing rotating to block the second water port.

In an embodiment of the application, a second partition plate is arranged in the second water pipe, the second partition plate is provided with a second water outlet and a supporting hole, the other end part of the valve rod is inserted into the supporting hole, and the spring abuts against the second partition plate.

In an embodiment of the application, a slidable mounting seat is arranged on the valve rod, the plug is arranged on the mounting seat, the spring is clamped between the mounting seat and the second partition plate, and the mounting seat is positioned between the baffle plate and the spring.

In an embodiment of the application, the mount pad is the sleeve structure, the mount pad cover is in on the valve rod, the mount pad with still be provided with the sealing washer between the valve rod.

In one embodiment of the present application, the lower edge of the end plate is overlapped on the side plate of the corresponding side, and the upper edge of the end plate is overlapped on the lower edge of the fume collecting hood.

In one embodiment of the present application, the inner surface of the combustion chamber is provided with a thermal insulation layer.

In an embodiment of the application, the device further comprises a preheating device, wherein the preheating device comprises a heat exchange box body and a preheating pipe, a communication port is formed in the heat exchange box body, a smoke exhaust pipe is further arranged on the heat exchange box body, and the preheating pipe is located in the heat exchange box body; the heat exchange box body is arranged in the shell, the communication port is communicated with the smoke outlet of the smoke collecting hood, and the second water port is connected with the water inlet end of the heat exchange tube through the preheating tube.

The application provides a water heater through set up valve subassembly in the valve body, valve rod and valve pocket in the valve subassembly can be at the inside activity of valve body, and wherein, the valve rod rotates the aperture that can adjust the second water port, and can drive the valve pocket and rotate in step in order to adjust the aperture of bypass delivery port when the valve rod rotates, so, just can come the flow of two way output rivers of simultaneous adjustment through single water inlet device, realizes improving the efficiency of flow regulation, has improved water heater's accuse temperature effect.

Through being provided with the extension that upwards lengthens at the top of the front and back panel of combustion chamber to form the installation zone that is used for installing the heat exchanger between two extension, when the complete machine equipment, install the heat exchanger in the installation zone that two extension formed, two end plates and extension mutually support and form the surrounding structure and supply flue gas to carry and heat the heat exchange tube between two end plates, in addition, the effect that collects flue gas and guide flue gas output is satisfied to the top of heat exchanger is covered to the collection petticoat pipe, to the heat exchanger, it has cancelled the shell structure, only adopt two end plates to support the installation heat exchange tube, the effectual overall structure form of simplifying the heat exchanger, realize the heat exchanger in the gas heater no casing no-winding pipe design, with the overall structure of effectual simplification heat exchanger, and then realize reducing gas heater's manufacturing cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic diagram of a water heater according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of another water heater according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a water intake module according to an embodiment of the present disclosure;

FIG. 4 is a front view of a one-inlet two-outlet valve according to an embodiment of the present application;

FIG. 5 is a partial exploded view of the one-inlet and two-outlet valve shown in FIG. 4;

FIG. 6 is an exploded view of the valve cartridge assembly shown in FIG. 4;

FIG. 7 is a perspective longitudinal cross-sectional view of the one-inlet and two-outlet valve shown in FIG. 4 in a first state;

FIG. 8 is a longitudinal cross-sectional view of the one-inlet and two-outlet valve shown in FIG. 4 in a second state;

FIG. 9 is a transverse cross-sectional view of the one-inlet and two-outlet valve shown in FIG. 4 in a second state;

FIG. 10 is a cross-sectional view of a second one-inlet two-outlet valve according to an embodiment of the present disclosure in a first state;

FIG. 11 is a cross-sectional view of the one-inlet and two-outlet valve shown in FIG. 10 in a second state;

FIG. 12 is a transverse cross-sectional view of a third one-inlet two-outlet valve provided in an embodiment of the present application in a first state;

FIG. 13 is a transverse cross-sectional view of the one-inlet and two-outlet valve shown in FIG. 10 in a second state;

FIG. 14 is a front view of yet another one-inlet two-outlet valve provided in an embodiment of the present application;

FIG. 15 is a partial exploded view of the one-inlet and two-outlet valve shown in FIG. 14;

fig. 16 is a schematic view of the valve sleeve shown in fig. 15;

FIG. 17 is a schematic view of the mounting bar shown in FIG. 15 in a second position;

FIG. 18 is a right side view of the one-inlet and two-outlet valve of FIG. 14 in a first state;

FIG. 19 is a longitudinal cross-sectional view of the one-inlet and two-outlet valve shown in FIG. 14 in a first state;

FIG. 20 is a right side view of the one-inlet and two-outlet valve of FIG. 14 in a second state;

FIG. 21 is a longitudinal cross-sectional view of the one-inlet and two-outlet valve shown in FIG. 14 in a second state;

FIG. 22 is a transverse cross-sectional view at the mounting plate shown in FIG. 21;

FIG. 23 is a partial exploded view of yet another one-inlet and two-outlet valve provided in accordance with an embodiment of the present application;

FIG. 24 is an exploded view of the illustrated valve cartridge assembly of FIG. 23;

FIG. 25 is a right side view of the one-inlet and two-outlet valve of FIG. 23 in a first state;

FIG. 26 is a cross-sectional view of FIG. 23 at A-A;

FIG. 27 is a right side view of the one-inlet and two-outlet valve of FIG. 21 in a second state;

FIG. 28 is a longitudinal cross-sectional view of the one-inlet and two-outlet valve shown in FIG. 21 in a second state;

FIG. 29 is a cross-sectional view of yet another one-inlet two-outlet valve provided in an embodiment of the present application;

fig. 30 is a schematic view of the valve sleeve of fig. 29;

FIG. 31 is a schematic view of a water heater according to an embodiment of the present disclosure;

FIG. 32 is an assembly view of the combustion chamber, heat exchanger, fume collection hood and preheating device of FIG. 31;

fig. 33 is a schematic view of the heat exchanger of fig. 32.

Reference numerals illustrate:

1. a valve body; 11. a closed end; 12. a first water port; 13. a second water port; 14. a third water outlet; 15. a first water pipe; 16. a second water pipe; 17. a third water pipe; 18. a cover plate; 181. a mounting hole; 19. a cylinder;

2. a valve core assembly;

21. a valve stem;

22. a valve sleeve; 221. a central bore; 222. a communication groove; 223. a first communication groove; 224. a second communication groove; 225. a first end face; 226. a second end face; 227. a mounting groove; 2271. a first portion; 2272. a second portion;

23. a mounting rod;

24. a plug;

31. a mounting plate; 32. a water blocking table;

4. a shaft sleeve; 41. a mounting part; 42. a limit part; 421. a limit groove;

5. a driver; 51. a sliding groove;

61. a memory; 62. a timer;

7. a controller;

8. a seal ring;

9. a valve; 91. an inlet valve and an outlet valve; 92. a one-inlet two-outlet valve;

10. A water heater; 101. a water inlet end; 102. a hot water end; 103. a water outlet end; 104. a water inlet branch pipe; 105. a water outlet branch pipe; 106. a bypass branch pipe; 107. a water outlet main pipe; 108. and a water inlet main pipe.

Detailed Description

In the gas water heater of the related art, when a user uses water, the gas water heater detects a water flow signal, a fan is firstly started to clean before, waste gas in the water heater is discharged through a smoke tube, after a wind pressure switch is detected to be closed, a gas valve is further started to ignite and burn, and water flows out through the water heater after being heated. About 3-5 s are needed from the time of boiling water to the time of igniting and burning of the water heater, and 20-30 s are needed for the boiling water to flow out from the constant temperature hot water at the bathing place of the user.

However, when the gas water heater is used again after being suspended for a short time, namely, when a user uses water secondarily in a short time, part of water remains in the water outlet end of the water heater after the water is used for the last time, so that hot water with higher temperature flows out of the water outlet end of the water heater. And because the fan needs to wait for cleaning before ignition and the ignition combustion needs 3-5 s. Therefore, after the residual hot water flows out, the water with lower temperature flows out from the water outlet end of the water heater. After the ignition and combustion of the water heater are completed, the water at the water outlet end of the water heater can flow out of water at the target water temperature.

Fig. 1 is a schematic view of a water heater according to an embodiment of the present application, fig. 2 is a schematic view of another water heater according to an embodiment of the present application, and arrows in fig. 1 and 2 indicate a flow direction of a liquid. Referring to fig. 1 and 2, the water heater 10 may have a water inlet end 101, a hot water end 102, and a water outlet end 103.

Illustratively, the water inlet 101 may have a water inlet manifold 104, the hot water end 102 may have a water outlet manifold 105, and the water outlet end 103 may have a water outlet manifold 107. A bypass branch pipe 106 can be communicated between the water inlet branch pipe 104 and the water outlet branch pipe 105. Cold water may be delivered through the intake manifold 108 when the water heater 10 is in operation. The output of intake manifold 108 may be in communication with intake manifold 104 and bypass manifold 106, respectively. So that a portion of the cold water enters the water inlet 101 of the water heater 10 through the water inlet branch 104, and a portion of the cold water is mixed with the hot water flowing out of the water outlet branch 105 through the bypass branch 106, and the mixed water can flow out to a user through the water outlet manifold 107.

The inventors of the present application found that when the user uses water twice, if the amount of cold water mixed with the hot water in the hot water end 102 is increased, the temperature of the water flowing out of the water outlet end 103 of the water heater 10 can be reduced; if the amount of cold water flowing into the water heater 10 is reduced, the heat exchange efficiency of the heat exchanger of the water heater 10 can be improved, and the temperature of water flowing out from the water outlet 103 of the water heater 10 can be further increased. In this way, the water temperature flowing out of the water outlet 103 of the water heater 10 is brought closer to the target water temperature when the user uses water for the second time, so as to improve the shower experience of the user.

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments.

Example 1

Fig. 3 is a schematic diagram of a water inlet module according to an embodiment of the present disclosure. Referring to fig. 1-3, a water intake module provided in an embodiment of the present application may include a memory 61, a timer 62, a valve 9, and a controller 7. The memory 61 may be installed in the water heater 10 and may record the last water use end time of the user. The timer 62 may be installed in the water heater 10 and may obtain the user's current water use start time. At least part of the valve 9 may be provided at the water inlet end 101 and may regulate the flow of water into the water inlet end 101. At least a portion of the valve 9 may be disposed at the hot water end 102 and may regulate the flow of water into the hot water end 102. The controller 7 may calculate a time interval between a current water use start time of the user and a last water use end time of the user, and may control the valve 9 such that the liquid flows into the water inlet end 101 of the water heater 10 at a small flow rate and flows into the water outlet end 102 of the water heater 10 at a large flow rate when the time interval is less than a preset time period.

Specifically, the memory 61 may acquire the time of the timer 62 at this moment when the user closes the valve 9 of the water outlet 103 (or shower) of the water heater 10, and save the time as the last water use end time of the user. The memory 61 may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as static random access memory 61 (SRAM), electrically erasable programmable read-only memory 61 (EEPROM), erasable programmable read-only memory 61 (EPROM), programmable read-only memory 61 (PROM), read-only memory 61 (ROM), magnetic memory 61, flash memory 61, magnetic or optical disk.

In addition, the timer 62 may obtain the current time when the user opens the valve 9 of the valve 9 (or the shower) at the water outlet 103 of the water heater 10, which is the current water use start time of the user. The timer 62 may be a timer that requires the user to calibrate time periodically. The timer 62 may also return the current time acquired by sending the acquisition request information to the server. The time may also be obtained from the network.

In addition, the controller 7 may acquire the last water use end time of the user transmitted from the memory 61 and the current water use start time of the user transmitted from the timer 62 when the user opens the valve 9 of the valve 9 (or the shower head) of the water outlet 103 of the water heater 10. The controller 7 may calculate the difference between the current water use start time of the user and the last water use end time of the user to obtain the time interval of the adjacent two times of water use of the user. The controller 7 may compare the calculated time interval with a preset time period, and if the time interval is smaller than the preset time period, the controller 7 may decrease the water flow into the water inlet 101 and increase the water flow into the water outlet 102 by controlling the valve 9. If the time interval is greater than the preset time period, the water flow flowing into the water inlet end 101 and the water flow flowing into the hot water end 102 are kept unchanged.

It should be noted that the water inlet module provided in the present application may have at least two states. Wherein, the first state: the liquid flows into the water inlet end 101 of the water heater 10 at a greater flow rate and into the hot water end 102 of the water heater 10 at a lesser flow rate. I.e. a large water inflow and a small bypass. Second state: the liquid flows into the water inlet end 101 of the water heater 10 at a smaller flow rate and into the hot water end 102 of the water heater 10 at a larger flow rate. I.e. a small water inflow and a large bypass. The larger and smaller mentioned in this paragraph are compared in two states. That is, the second state is smaller in the amount of water flowing into the water inlet end 101 of the water heater 10 and larger in the amount of water flowing into the hot water end 102 of the water heater 10 than the first state. When the user uses water for the second time, the water inlet module can be operated for a period of time in the second state. After the water inlet module operates for a period of time, the water inlet module can be switched from the second state to the first state. The time period during which the water inlet module operates in the second state may be a preset value. Alternatively, the water intake module may transition from the second state to the first state after ignition heating.

Alternatively, the controller 7 may control the valve 9 such that the liquid flows into the water inlet 101 of the water heater 10 at a smaller flow rate and flows into the water outlet 102 of the water heater 10 at a smaller flow rate when the operation state of the water heater 10 is stable, the heating state of the water heater 10 is at a maximum value, and the temperature of the water outlet 103 of the water heater 10 is less than a preset temperature value.

Specifically, the water inlet module provided herein may further have a third state: the liquid flows into the water inlet end 101 of the water heater 10 at a smaller flow rate and into the hot water end 102 of the water heater 10 at a smaller flow rate. I.e. a small water intake and a small bypass condition. When the water heater 10 is operated in the first state for a period of time or the water outlet end 103 of the water heater 10 flows out hot water with stable temperature, and the proportional valve for regulating the fuel gas of the water heater 10 is adjusted to the maximum gear, but the water outlet temperature of the water heater 10 measured by the temperature detector arranged at the water outlet end 103 of the water heater 10 is lower than the preset temperature value, the water inlet module can be converted from the first state to the third state so as to increase the temperature of the water outlet end 103 of the water heater 10.

Referring to fig. 1, alternatively, the valve 9 may be arranged in several ways:

in one possible implementation, referring to fig. 1, the valves 9 may be multiple, each valve 9 may be an in-out valve 91, the in-out valve 91 may have a first water port and a water outlet, and the in-out valve 91 may change the flow of the pipeline communicating with the opening by adjusting the opening of the water outlet or the first water port. The valve 9 may include two one-in-one-out valves 91, wherein one-in-one-out valve 91 may be provided at the bypass branch pipe 106 to regulate the flow rate of the bypass branch pipe 106; the other one-in-one-out valve 91 may be provided on the intake manifold 108 or the intake manifold 104. When the one-in-one-out valve 91 is provided in the intake manifold 108 as shown in fig. 1, the one-in-one-out valve 91 can regulate the flow rate of the intake manifold 108. When an in-out valve 91 is provided in the water inlet branch pipe 104, the in-out valve 91 can adjust the flow rate of the water inlet branch pipe 104. Of course, the valve 9 may also include three one-in-one-out valves 91, and the bypass branch 106, the water inlet branch 104, and the water inlet manifold 108 may each be provided with one-in-one-out valve 91.

In another possible implementation, referring to fig. 2, the valve 9 may include at least one-in two-out valve 92. The one-inlet-two-outlet valve 92 may have a first water port and two water outlets, and the one-inlet-two-outlet valve 92 may change the flow rate of the pipe line communicating with the opening by changing the opening degree of the first water port and/or the water outlets. The first water port may be in communication with the water inlet manifold 108 and the two water outlets may be in communication with the water inlet manifold 104 and the bypass manifold 106, respectively.

The one-in two-out valve 92 can adjust the opening degrees of two openings and can also adjust the opening degrees of three openings. For better control of the flow, an inlet-outlet valve 91 is provided in the upstream or downstream line of the inlet-outlet valve 92 when the inlet-outlet valve 92 can only adjust the opening of two openings. For example, when the one-in-two-out valve 92 can adjust the opening degrees of only two outlets, one-in-one-out valve 91 may be provided upstream of the one-in-two-out valve 92. When the opening degree of one outlet and one inlet can be adjusted by one inlet and two outlet valves 92 and one outlet is communicated with the water inlet branch pipe 104, one inlet and one outlet valve 91 can be arranged at the bypass branch pipe 106. Similarly, when the two inlet and outlet valves can only adjust the opening degree of one outlet and one inlet, and one outlet is communicated with the bypass branch pipe 106, one inlet and outlet valve 91 may be provided in the water inlet branch pipe 104.

Fig. 4-28 illustrate five configurations of one-inlet-two-outlet valves 92, and a possible implementation of one-inlet-two-outlet valves 92 is described below with reference to fig. 4-28. For convenience of description, in the embodiment of the present application, the direction indicated by the arrow X is the left end of the water inlet module, and the other end is the right end of the water inlet module; the direction indicated by an arrow Y is taken as the front end of the water inlet module, and the other end is taken as the rear end of the water inlet module; the direction indicated by the arrow Z is taken as the upper end of the water inlet module, and the other side is taken as the lower end of the water inlet module.

Fig. 4 is a front view of a one-in two-out valve 92 provided in an embodiment of the present application. Referring to fig. 4, the one-in two-out valve 92 may include a valve body 1, and the valve body 1 may have a first water through port 12 in an axial direction and a closed end 11, that is, one end of the valve body 1 in the axial direction is closed to form the first water through port 12; the other end of the valve body 1 in the axial direction has an opening to form a first water passage 12. Illustratively, in fig. 4, the valve body 1 may include a cylinder 19 and a cover plate 18. The cylinder 19 may be disposed in a vertical direction, and both upper and lower ends of the cylinder 19 may have openings. The cover plate 18 may cover the first water through hole 12 above the cylinder 19 to form a closed end 11 at the upper end of the cylinder 19 and a first water through hole 12 at the lower end of the cylinder 191. Of course, the valve body 1 may have other structures for forming the first water through hole 12 and the closed end 11, and the embodiment of the present application is only shown by taking the structure of the cylinder 19 shown in fig. 4 as an example, and is not limited in particular.

Referring to fig. 4-28, the sidewall of the valve body 1 between the first water port 12 of the valve body 1 and the closed end 11 of the valve body 1 may be provided with a second water port 13 and a third water port 14, at least a portion of the valve core assembly 2 being disposed within the valve body 1 and movable relative to the valve body 1, the valve core assembly 2 being adapted to vary the opening degree of two of the second water port 13, the third water port 14 and the first water port 12. Fig. 4 to 28 illustrate the inside of the housing space defined by the cylinder 19 and the cover 18 in the valve body 1.

The valve core assembly 2 shown in fig. 4 to 13 is described below by taking the example of changing the opening degrees of the second water port 13 and the third water port 14 only, and the manner of changing the second water port 13 and the first water port 12, or changing the third water port 14 and the first water port 12 with respect to the valve core assembly 2 mentioned below can be obtained by referring to the manner of changing the second water port 13, the third water port 14 and the first water port 12 (corresponding to fig. 14 to 28) of the valve core assembly 2, which is not described here.

Referring to fig. 4 to 13, the second and

third water ports

13 and 14 may be provided at a side wall of the cylinder 19, the valve core assembly 2 may include a valve housing 22, the valve housing 22 may change the opening degrees of the second and

third water ports

13 and 14 by rotating in the valve body 1 as shown in fig. 4 to 11, or the valve housing 22 may change the opening degrees of the second and

third water ports

13 and 14 by moving in the valve body 1 as shown in fig. 12 and 13.

Referring to fig. 4 to 11, in one example, the second water communication port 13 and the third water communication port 14 are provided at different positions in the circumferential direction of the side wall of the cylinder 19. In fig. 4 to 11, the second water port 13 is shown as being provided on the left side of the cylinder 19, and the third water port 14 is shown as being provided on the right side of the cylinder 19.

The valve sleeve 22 is rotatably disposed in the accommodating space formed by the cylinder 19 and the cover plate 18, and the rotation axis of the valve sleeve 22 may be disposed along the axis of the cylinder 19. I.e. the axis of rotation of the valve sleeve 22 is parallel or coincident with the axis of the cylinder 19. The interior of the valve sleeve 22 may have a central bore 221, which central bore 221 may be opposite the first water through opening 12 of the valve body 1 and in communication with the first water through opening 12 of the valve body 1. The sidewall of the valve housing 22 has a communication groove 222 communicating with the central hole 221, and the communication groove 222 is available opposite to the second water communication port 13 such that the communication groove 222 communicates with the second water communication port 13. The communication groove 222 may be used opposite the third water port 14 such that the communication groove 222 communicates with the third water port 14.

Specifically, the communication groove 222 may communicate the second water communication port 13, the third water communication port 14, and the first water communication port 12 of the valve body 1 with the center hole 221. The communication groove 222 may be arranged in the following ways:

In one possible implementation, fig. 6 is an exploded view of the valve core assembly 2 shown in fig. 4, fig. 7 is a perspective longitudinal sectional view of the one-in two-out valve 92 shown in fig. 4 in a first state, fig. 8 is a longitudinal sectional view of the one-in two-out valve 92 shown in fig. 4 in a second state, and fig. 9 is a transverse sectional view of the one-in two-out valve 92 shown in fig. 4 in a second state. Referring to fig. 6 to 9, the communication groove 222 may include at least a first communication groove 223 and a second communication groove 224. The first communication groove 223 and the second communication groove 224 may have a preset interval in the circumferential direction of the valve housing 22. The first communication groove 223 may be used to communicate with the second communication port 13, and the second communication groove 224 may be used to communicate with the third communication port 14.

The open arrows shown in fig. 7-9 are the flow direction of the liquid. Referring to fig. 7 to 9, the first water port 12 of the valve body 1 may be a first water port of a one-inlet two-outlet valve, and the first water port 12 of the valve body 1 may be communicated with the water inlet manifold 108 through the first water pipe 15; the second water port 13 may be a second water port of a two-in/two-out valve, the first water port 12 of the valve body 1, the central hole 221 of the valve sleeve 22, the first communication groove 223 of the valve sleeve 22, and the second water port 13 may form a water inlet channel, and the second water port 13 may be communicated with the water outlet branch pipe 105 in fig. 2 through the second water pipe 16. The third water port 14 may be a third water port of a one-inlet two-outlet valve, the first water port 12 of the valve body 1, the central hole 221 of the valve sleeve 22, the second communication groove 224 of the valve sleeve 22, and the third water port 14 may form a bypass flow path, and the third water port 14 may be communicated with the bypass branch pipe 106 in fig. 2 through the third water pipe 17.

Of course, the second water port 13 may be a first water port of a two-in/two-out valve, and the first water port 12 of the valve body 1 may be a second water port of a two-in/two-out valve. The second water through-hole 13, the first communication groove 223 of the valve housing 22, the central hole 221 of the valve housing 22, and the first water through-hole 12 of the valve body 1 may form a water inlet flow path, and the second water through-hole 13 may communicate with the water inlet manifold 108 in fig. 2. The third water port 14 may be a third water port of a one-in two-out valve, the second water port 13, the central hole 221 of the valve housing 22, the second communication groove 224 of the valve housing 22, and the third water port 14 may form a bypass flow path, and the third water port 14 may be communicated with the bypass branch pipe 106 in fig. 2 through the third water pipe 17. This flow pattern is referred to in the first-in and second-out valves 92 shown in fig. 14-28, and will not be described in detail herein.

The following describes the first and second states of the two-in/out valve 92 by taking the flow pattern shown in fig. 7-9 as an example, that is, the second water port 13 may be a second water port of the two-in/out valve, the third water port 14 may be a third water port of the two-in/out valve, and the first water port 12 of the valve body 1 may be a first water port of the two-in/out valve.

Referring to fig. 7, when the one-in two-out valve 92 is in the first state, the first communicating groove 223 may face the second communicating hole 13, and the facing area is at a larger value. That is, the area where the projection of the first communication groove 223 on the side wall of the cylinder 19 in the radial direction of the cylinder 19 overlaps with the second communication port 13 is set to a large value. When the one-inlet two-outlet valve 92 is in the first state, the second communication groove 224 may be opposite to the third water outlet 14, and the opposite area may be at a smaller value. That is, the area where the projection of the first communication groove 223 on the side wall of the cylinder 19 overlaps with the second communication port 13 in the radial direction of the cylinder 19 is small.

Referring to fig. 8 and 9, when the one-in two-out valve 92 is in the second state, the first communication groove 223 may be opposite to the second communication port 13 with a smaller opposite area. That is, the area where the projection of the first communication groove 223 on the side wall of the cylinder 19 overlaps with the second communication port 13 in the radial direction of the cylinder 19 is small. When the one-inlet two-outlet valve 92 is in the second state, the second communication groove 224 may be opposite to the third water outlet 14, and the opposite area may be at a larger value. That is, the area where the projection of the second communication groove 224 on the side wall of the cylinder 19 in the radial direction of the cylinder 19 coincides with the third water port 14 is set to a large value.

It should be noted that, as shown in fig. 7-9, the area of the third water port 14 may be larger than the area of the second communication groove 224, and of course, the area of the third water port 14 may be smaller than the area of the second communication groove 224.

Referring to fig. 8, in order not to excessively affect the inflow amount of the water heater 10 in the second state, i.e., in order to secure the flow rate of the inflow passage in the second state, the first communication groove 223 may be lower than the second communication groove 224 at the position where the first communication groove communicates with the second communication groove 13. That is, in the second state, only the liquid higher than the lower end of the second communication groove 224 can flow into the third water pipe 17 through the second communication groove 224 and the third water through-hole 14.

Specifically, referring to fig. 9, in the second state, a part of the first communicating groove 223 is blocked by the inner surface of the cylinder 19. A portion of the first communication groove 223 not shielded by the inner surface of the cylinder 19 may be opposed to and communicate with the second communication port 13. Referring to fig. 8, the lower end of the first communication groove 223, which is not blocked by the inner surface of the cylinder 19, may be lower than the second communication groove 224. The upper end of a portion of the first communication groove 223 may be higher than the lower end of the second communication groove 224 and lower than the upper end of the second communication groove 224 as shown in fig. 8. Of course, the upper end of the portion of the first communication groove 223 may be lower than the lower end of the second communication groove 224.

In order to realize that, in the second state, the portion of the first communication groove 223 that is not blocked by the inner surface of the cylinder 19, that is, the portion of the first communication groove 223 opposite to the second communication port 13 is lower than the second communication groove 224, the shape of the first communication groove 223 may be set in this embodiment:

referring to fig. 5, alternatively, at least part of the highest point of the first communication groove 223 may be gradually inclined upward in a preset direction. The predetermined direction may be a direction of rotation of the valve sleeve 22 from the first state to the second state. Illustratively, arrow W in fig. 5 represents a counterclockwise direction. Referring to fig. 2, the valve sleeve 22 is rotatable in a W direction, i.e., counterclockwise, from the first state to the second state. The upper edge line of the first communication groove 223 may be gradually inclined upward in the counterclockwise direction.

Wherein, in order to increase the opening size of the first communication groove 223, at least a portion of the first communication groove 223 may be disposed at an upper portion of the sidewall of the valve housing 22, and at least a portion of the first communication groove 223 may be disposed at a lower portion of the sidewall of the valve housing 22. Illustratively, the left edge line of the first communicating groove 223 in fig. 5 may be arc-shaped, and the center of the left edge line may be located at the middle right side of the left edge line. That is, the first communication groove 223 may be in a symmetrical pattern about the central axis of the valve housing 22, and the center of the left side edge line may be located on the central axis of the valve housing 22. The middle axial surface of the valve sleeve 22 may be parallel to the bottom surface of the valve sleeve 22, and the distance from the upper end surface of the valve sleeve 22 to the middle axial surface is equal to the distance from the lower end surface of the valve sleeve 22 to the middle axial surface.

Referring to fig. 7 and 8, alternatively, in order to allow the valve sleeve 22 to rotate relatively stably within the cylinder 19, the outer surface of the sidewall of the valve sleeve 22 may be in contact with the inner surface of the cylinder 19, and the outer surface of the valve sleeve 22 may be adapted to the inner surface of the cylinder 19. In order to bring the outer surface of the sidewall of the valve housing 22 into contact with the inner surface of the first water pipe 15, the upper end surface of the valve housing 22 may be higher than the highest end of both the second water through-hole 13 and the third water through-hole 14. The lower end surface of the valve sleeve 22 may be lower than the lowest end of both the second and

third water ports

13, 14.

With continued reference to fig. 5-8, to rotate the valve sleeve 22, the valve sleeve 22 may alternatively include side walls and a top wall, and the top wall of the valve sleeve 22 may be secured with the valve stem 21. The valve stem 21 may extend out of the cover plate 18 and be connected to the driver 5 arranged outside the cover plate 18. The actuator 5 can rotate the valve stem 21 by actuating the valve sleeve 22. The driver 5 may be communicatively connected to the above-mentioned controller 7. The driver 5 may be a motor, which may have a motor shaft, and the motor shaft may be directly connected to the valve rod 21 by welding, interference fit, coupling, or the like, or may be indirectly connected to the valve rod 21 by a decelerator or the like.

In order to make the valve rod 21 stably rotate, the shaft sleeve 4 can be accommodated in the accommodating space formed by the cover plate 18 and the cylinder 19. The outer surface of the sleeve 4 may be fixed to the inner surface of the cylinder 19, and the upper surface of the sleeve 4 may abut against the cover plate 18. The valve stem 21 is rotatable relative to the sleeve 4 through the sleeve 4. The outer surface of the shaft sleeve 4 can be provided with a groove, and a sealing ring 8 can be accommodated between the groove and the inner surface of the cylinder 19 so as to realize the sealing between the shaft sleeve 4 and the inner surface of the cylinder 19.

Referring to fig. 7 and 8, to achieve axial restraint of the valve sleeve 22 in the barrel 19, the top wall of the valve sleeve 22 may abut the lower surface of the sleeve 4. The lower end of the cylinder 19 may be fixed with a first water pipe 15, the first water pipe 15 may be coaxially disposed with the cylinder 19, and the diameter of the first water pipe 15 may be smaller than that of the cylinder 19, so that the inner surface of the first water pipe 15 may be closer to the axis of the cylinder 19 than the inner surface of the cylinder 19, thereby forming a limit groove for limiting the lower end surface of the valve sleeve 22.

Fig. 10 is a cross-sectional view of the second one-inlet-two-outlet valve 92 provided in the embodiment of the present application in the first state, and fig. 11 is a cross-sectional view of the one-inlet-two-outlet valve 92 shown in fig. 10 in the second state. Referring to fig. 10 and 11, in another example, the second water communication port 13 and the third water communication port 14 are provided at different positions in the axial direction of the side wall of the cylinder 19. In fig. 10 and 11, the second water port 13 is provided at the lower end of the cylinder 19, and the third water port 14 is provided at the upper end of the cylinder 19.

The valve sleeve 22 is slidably disposed in the accommodating space formed by the cylinder 19 and the cover plate 18, and the valve sleeve 22 can slide along the axial direction of the cylinder 19. The interior of the valve sleeve 22 may have a central bore 221, which central bore 221 may be opposite the first water through opening 12 of the valve body 1 and in communication with the first water through opening 12 of the valve body 1. The sidewall of the valve housing 22 may have a first communication groove 223 and a second communication groove 224 communicating with the central hole 221. The first communication groove 223 and the second communication groove 224 may have a preset interval in the axial direction of the valve housing 22. The first communication groove 223 may be used to communicate with the second communication port 13, and the second communication groove 224 may be used to communicate with the third communication port 14.

Additionally, the valve housing 22 may include a top wall and a side wall. The valve housing 22 may have a valve stem 21 attached to its top wall, the valve stem 21 being adapted to extend through the cover plate 18 and being axially movable relative to the cover plate 18 along the barrel 19. The portion of the valve stem 21 located outside the cover plate 18 may be connected to the actuator 5. The driver 5 may be communicatively connected to the above-mentioned controller 7. The driver 5 can be a linear motor, a cylinder or the like which can output axial force. The drive 5 may also be a rotary motor and a conversion mechanism converting torque into linear motion.

In another possible implementation of the communication groove 222, fig. 12 is a transverse cross-sectional view of the third one-inlet-two-outlet valve provided in the embodiment of the present application in the first state, and fig. 13 is a transverse cross-sectional view of the one-inlet-two-outlet valve shown in fig. 10 in the second state. Referring to fig. 12 and 13, at least a portion of the valve sleeve 22 may be semi-annular in cross-sectional shape. The inner surface of the valve sleeve 22 may be formed with a central bore 221 communicating with the first water through port 12, and the valve sleeve 22 may have a first end surface 225 and a second end surface 226 in the circumferential direction, that is, one end of the valve sleeve 22 in the circumferential direction may have the first end surface 225 and the other end of the valve sleeve 22 in the circumferential direction may have the second end surface 226. A communication groove 222 (not shown in fig. 12 and 13) may also be formed between the first end face 225 and the second end face 226 of the valve sleeve 22.

Wherein the perimeter of the inner surface between the second end of the second water port 13 of the barrel 19 and the first end of the third water port 14 of the barrel 19 may be smaller than the perimeter of the outer surface of the valve sleeve 22 (i.e., the perimeter between the first end surface 225 of the valve sleeve 22 and the second end surface 226 of the valve sleeve 22).

Specifically, the outer surface of the valve sleeve 22 is engageable with the inner surface of the barrel 19 and rotatable relative to the inner surface of the barrel 19. When the valve sleeve 22 is in the first state as shown in fig. 12, the valve sleeve 22 can cover a small part of the second water port 13 or does not cover the second water port 13, i.e. the projection of the valve sleeve 22 on the cylinder 19 along the radial direction of the cylinder 19 does not fall in the second water port 13 or only a small part falls in the second water port 13, so that the opening degree of the second water port 13 is larger; the valve sleeve 22 may block at least part of the third water port 14 such that the opening of the third water port 14 is small.

When the valve sleeve 22 is in the second state as shown in fig. 13, the valve sleeve 22 can cover at least part of the second water through-hole 13, i.e. the projection of the valve sleeve 22 on the cylinder 19 along the radial direction of the cylinder 19 falls at least partially into the second water through-hole 13, so that the opening degree of the second water through-hole 13 is smaller; the valve sleeve 22 may cover a small part of the third water opening 14 or may not cover the third water opening 14, i.e. the projection of the valve sleeve 22 onto the cylinder 19 in the radial direction of the cylinder 19 does not fall within the third water opening 14 or only a small part falls within the third water opening 14, so that the opening of the third water opening 14 is larger.

The following description of the one-in two-out valve capable of changing three openings with reference to fig. 14 to 28 may have the advantage of changing a large range of flow rates with a small range of drive.

The same points provided above for the two-port valve capable of changing two ports as provided below for the three-port valve capable of changing three ports may be: the valve core assembly 2 may include a valve sleeve 22, and the valve sleeve 22 may change the opening degrees of the second water port 13 and the third water port 14 by rotating in the cylinder 19. The difference is that: the valve core assembly 2 may further include a valve rod 21, and the valve rod 21 may change the opening of the first water passage 12 of the valve body 1 by penetrating the first water passage 12 of the valve body 1 and by sliding along the axis of the cylinder 19.

Fig. 19 is a longitudinal sectional view of the one-in two-out valve 92 shown in fig. 14 in a first state, and fig. 21 is a longitudinal sectional view of the one-in two-out valve 92 shown in fig. 14 in a second state. Referring to fig. 19 and 21, the valve stem 21 may be penetrated through the cylinder 19 in the axial direction of the cylinder 19. Part of the valve stem 21 may be located outside the cover plate 18 to connect with the driver 5; a part of the valve rod 21 may be located in the cylinder 19 and pass through the first water port 12 of the valve body 1, and a flow channel for flowing liquid may be formed between an outer surface of the part of the valve rod 21 and an inner surface of the first water port 12 of the valve body 1. The size of the flow passage may vary during axial movement of the valve stem 21 along the barrel 19.

For example, in fig. 19 and 21, the valve stem 21 may be fixed with the plug 24, and the inner surface of the first water passing port 12 of the valve body 1 may be fixed with the annular water blocking table 32, that is, the inside of the water blocking table 32 may have the center hole 221. The downward flow path of the valve body 1 decreases during the change of the valve stem 21 from the first state to the second state. To achieve this, at least one of the outer surface of the plug 24 and the inner surface of the water stop 32 has a bevel. In an example, referring to fig. 19 and 21, the central hole 221 of the water blocking table 32 may include an inverted cone section, and the diameter of the inverted cone section may be gradually reduced in a direction approaching the end face of the first water through-hole 12 of the valve body 1 (i.e., the lower end face of the cylinder 19 in fig. 19 and 21), so that the distance between the plug 24 and the central hole 221 is gradually reduced in a process approaching the end face of the first water through-hole 12 of the valve body 1. Alternatively, the central hole 221 may further include a cylindrical section, which may be closer to the end surface of the first water through-hole 12 of the valve body 1 than the back taper section, and the diameter of the cylindrical section may be equal to the minimum diameter of the back taper section. In the second state, a portion of the plug 24 may be positioned within the cylindrical section to facilitate extending the length of the smaller flow path.

In another example, the plug 24 may be coaxial with the valve stem 21, and at least a portion of the plug 24 may gradually decrease in diameter in a direction approaching the end face of the first water passage 12 of the valve body 1. In the first state, the smaller diameter end of the plug 24 may be positioned within the central bore 221 of the water stop 32. During the transition from the first state to the second state, the larger diameter end of the plug 24 gradually falls into the central hole 221 of the water stop 32 so as to gradually reduce the distance between the plug 24 and the central hole 221 of the water stop 32.

Fig. 22 is a transverse sectional view of the mounting plate 31 shown in fig. 21, referring to fig. 21 and 22, in order to stably move the valve rod 21 with respect to the valve body 1, optionally, a mounting plate 31 may be further fixed in the first water through hole 12 of the valve body 1, the mounting plate 31 may have a limiting hole for passing the valve rod 21 therethrough, and a part of the valve rod 21 may be slidably disposed in the limiting hole. In addition, a flow passage for passing the liquid may be provided between the mounting plate 31 and the cylinder 19 or the water blocking table 32.

To simplify control, an actuator 5 may be used to move both the valve stem 21 and the valve sleeve 22. Referring to fig. 19 and 21, alternatively, the valve stem 21 may include a first end and a second end, the first end of the valve stem 21 may be threadably coupled to the valve body 1 such that the valve stem 21 may be rotationally movable along the axial direction of the valve stem 21 when the actuator 5 drives the valve stem 21 to rotate. A second end of the valve stem 21 may be coupled to the valve housing 22 such that the valve stem 21, when moved, rotates the valve housing 22. Of course, to facilitate the valve stem 21 changing the first water passage 12 of the valve body 1, the second end of the valve stem 21 may pass out of the valve sleeve 22 and may pass through the first water passage 12 of the valve body 1.

In addition, in order to make the diameter of the valve stem 21 smaller than the diameter of the cylinder 19, the setting of the valve sleeve 22 is facilitated. Optionally, the shaft sleeve 4 may be accommodated in the accommodating space formed by the cylinder 19 and the cover plate 18. The sleeve 4 may include a mounting portion 41. The outer surface of the mounting portion 41 may be fixed to the inner surface of the cylinder 19, and the inside of the mounting portion 41 may have a screw hole screw-coupled with the first end of the valve stem 21. In order to avoid leakage of the liquid in the accommodating space, a sealing ring 8 may be disposed between the mounting portion 41 and the inner surface of the cylinder 19. In addition, in order to facilitate the rotation of the valve sleeve 22 within the cylinder 19, referring to fig. 19 and 21, the sleeve 4 may further include a limiting portion 42, the limiting portion 42 may be disposed coaxially with the mounting portion 41, and the limiting portion 42 may be located below the mounting portion 41. The diameter of the stopper 42 may be smaller than that of the mounting portion 41 so that there may be a certain interval between the stopper 42 and the inner surface of the cylinder 19. The valve sleeve 22 may be received within the space. That is, the valve sleeve 22 may be sleeved outside the limiting portion 42 and may be embedded inside the cylinder 19 so as to limit the radial displacement of the valve sleeve 22.

Furthermore, the valve rod 21 moves the valve sleeve 22 in several possible ways:

In one possible implementation, the valve sleeve 22 is movable relative to the valve stem 21 as shown in fig. 15-21. Referring to fig. 15 to 21, a mounting rod 23 may be fixed to a sidewall of the valve stem 21, and the mounting rod 23 may be disposed in a radial direction of the valve stem 21. The side wall of the valve housing 22 may have a mounting groove 227 that mates with the mounting stem 23. Since the valve stem 21 moves while rotating, the mounting groove 227 is approximately L-shaped, and the mounting groove 227 may have an opening at one end.

During rotation of the valve stem 21 by the mounting stem 23 and the mounting groove 227, the valve stem 21 may have a first position as shown in fig. 15 and a second position as shown in fig. 17. Referring to fig. 16, the mounting groove 227 may include a first portion 2271 and a second portion 2272, the first portion 2271 may extend in an axial direction of the valve sleeve 22, the second portion 2272 may have a circumferential extension along the valve sleeve 22, and an end of the second portion 2272 facing away from the first portion 2271 is open.

Referring to fig. 19, in the first state, the second water passage 13 is at a larger opening, the third water passage 14 is at a smaller opening, and the first water passage 12 of the valve body 1 is at a larger opening. In the process of moving the valve rod 21 from fig. 19 to fig. 21, the valve rod 21 can be rotated clockwise while being lowered, and the mounting rod 23 is first positioned in the first position shown in fig. 15, so that the valve rod 21 can drive the valve sleeve 22 to be lowered while being rotated, thereby forming the opening of the third water outlet 14 shown in fig. 20 and 21. When the lower end surface of the valve sleeve 22 abuts against the stopper 42 in the valve body 1, the mounting rod 23 can start to rotate clockwise from the first position shown in fig. 15 and slide out of the mounting groove 227 from the opening of the second portion 2272 of the mounting groove 227. After the mounting rod 23 is moved from the second position shown in fig. 17 to the first position shown in fig. 15, the position of the plug 24 shown in fig. 20 is formed.

Similarly, during rotation of the valve stem 21 from fig. 21 to fig. 19, the valve stem 21 may be raised while rotating counterclockwise and causing the mounting rod 23 to move from the second position shown in fig. 17 to the first position shown in fig. 15. After the mounting rod 23 is moved to the first position, the valve rod 21 continues to rotate counterclockwise to drive the valve sleeve 22 to rise while rotating counterclockwise to form the opening of the third water port 14 shown in fig. 18 and 19.

It should be noted that the above-mentioned limiting portion 42 may limit the lowest position of the rotation of the valve sleeve 22, so that the valve sleeve 22 is supported by the limiting portion 42 when the mounting rod 23 is disengaged from the mounting groove 227 of the valve sleeve 22. In fig. 19 and 21, the upper end surface of the water blocking table 32 may be higher than the second water through hole 13 so as to support the valve housing 22.

In another possible implementation of the valve stem 21 with the valve sleeve 22 in motion, the valve sleeve 22 may be fixed to the valve stem 21 as shown in fig. 23-28. The second end of the valve stem 21 may pass through the valve sleeve 22 and may be secured with the valve sleeve 22. The valve rod 21 and the valve sleeve 22 can be fixed by welding, bonding and other non-detachable connection, or by clamping connection, threaded connection and other detachable connection. Illustratively, in fig. 23 and 24, the sidewall of the valve sleeve 22 may be provided with a mounting groove 227, and the mounting groove 227 may have a downwardly facing opening. The side wall of the valve rod 21 may be fixed with a mounting rod 23, and the mounting rod 23 may be engaged with the mounting groove 227. For stable connection between the valve rod 21 and the valve sleeve 22, the mounting rod 23 may have at least two, and a plurality of mounting rods 23 may be uniformly distributed at the outer circumference of the valve rod 21. Fig. 23 and 24 illustrate two mounting bars 23.

It should be noted that, the valve sleeve 22 may be disposed in the manner described above with reference to the valve sleeve 22. That is, the inside of the valve housing 22 may have a central hole 221, and the sidewall of the valve housing 22 may be provided with a communication groove 222 communicating with the central hole 221. The difference from the valve housing 22 of the one-in two-out valve in which the opening degrees of the two openings are changed above is that the mounting groove 227 of the side wall of the valve housing 22 shown in fig. 15 to 21 needs to be provided with the opening, so the cross-sectional shape of the side wall of the valve housing 22 needs to be semi-annular, i.e., the circumference of the inner surface between the second end of the second water through-port 13 of the cylinder 19 and the first end of the third water through-port 14 of the cylinder 19 may be smaller than the circumference of the outer surface of the valve housing 22 (i.e., the circumference between the first end surface 225 of the valve housing 22 and the second end surface 226 of the valve housing 22). Further, referring to fig. 18 and 19, in the first state, the mounting groove 227 may serve as the communication groove 222 communicating with the third water passage 14. Further, since the lower end surface of the third water port shown in fig. 23 to 28 is higher than the upper end surface of the second water port, the valve housing has two communication grooves provided in the axial direction of the valve housing as shown in fig. 24, 26 and 28. The communication groove positioned above can be used for communicating with the third water port, and the communication groove positioned below can be used for communicating with the second water port.

Note that the open arrows shown in fig. 19, 21, 26, and 28 indicate the flow direction of the liquid. In fig. 19, 21, 26 and 28, the second water port 13 may be a first water port of a two-inlet/two-outlet valve, the first water port 12 of the valve body 1 may be a second water port of a two-inlet/two-outlet valve, and the third water port 14 may be a third water port of a two-inlet/two-outlet valve. Of course, the second water port 13 may be a second water port of a two-inlet valve, the third water port 14 may be a third water port of a two-inlet valve, and the first water port 12 of the valve body 1 may be a first water port of a two-inlet valve.

It should be noted that the structure of the first inlet/second outlet valve may also be in a third state, and the third state may be a state between the first state and the second state.

As shown in fig. 29 and 30, in order to more precisely adjust the opening degrees of the second and third water ports to precisely control the opening degrees, the valve assembly includes a valve stem 21, a valve sleeve 22, and a plug 24, the valve sleeve 22 and the plug 24 being fixedly disposed on the valve stem 21 in this order, the plug 24 being slidably fitted over the valve stem 21 and disposed near an end of the valve stem 21; the driver is arranged on the valve body and configured to drive the valve rod 21 to rotate and drive the valve rod 21 to move along the axis; wherein the valve rod 21 is rotatably arranged on the valve body and can move relative to the valve body during rotation, the valve sleeve 22 and the plug 24 are positioned in the valve body, the valve sleeve 22 is arranged on one side of the second water port and is used for adjusting the opening of the second water port, and the plug 24 is arranged opposite to the third water port and is used for adjusting the opening of the third water port; in addition, a blocking piece 211 and a spring 212 are arranged on the valve rod 21, the plug 24 is positioned between the blocking piece 211 and the spring 212, and the spring 212 is abutted against the valve body.

In the initial state, the plug 24 is far away from the third water port under the action of the spring 212, so that the third water port is in an opened state. In the use process, the driving part drives the valve rod 21 to rotate, so that the valve sleeve 22 adjusts the opening of the second water port, and the mixing proportion of cold water and hot water is adjusted. When the water inflow needs to be continuously reduced, the driving component drives the valve rod 21 to rotate, so that the baffle 211 abuts against the plug 24, and further drives the plug 24 to move towards the third water port, and at the moment, the opening of the third water port is gradually reduced.

In some embodiments, a first partition 161 is disposed in the second water pipe, and the second water port and the fourth water port 162 are disposed on the first partition 161; the side wall of the valve sleeve 22 is provided with a water flow passage communicated with the communication port; the water flow passage is configured to communicate with the fourth water port with the valve sleeve 22 rotating to block the second water port.

Specifically, after the second water port is completely closed by the retainer ring, the fourth water port is always communicated with the first water port through the water flow channel, so that water flows out of the second water port all the time. While the valve rod 21 continues to rotate to drive the plug 24 to move toward the third water port to reduce the opening degree of the third water port, at this time, the fourth water port 162 is kept in a normally open state although the second water port is completely closed by the retainer ring. Therefore, the proportion range of cold water and hot water can be regulated more accurately, and the constant-temperature water outlet state can be kept better.

In one embodiment, the water outlet areas of the fourth water outlet 162 and the third water outlet 14 are designed to be the same, so that the second water pipe 16 is filled with water through the fourth water outlet 162 when the second water outlet 13 is covered by the valve sleeve 22, and the third water outlet 14 in the third water pipe 17 is completely opened. So as to realize that the water outlet flow rates of the fourth water outlet 162 and the third water outlet 14 are basically the same, and further meet the condition that the water outlet flow rates of the second water pipe 16 and the third water pipe 17 reach basically the same state. In this state, the water inflow module controls water flow through the small areas of the fourth water port 162 and the third water port 14, so that the total water inflow of the water inflow module is reduced, and the lowest point of the water temperature of the mixed water is further increased, and the water is closer to the target water outlet temperature, so that user experience is improved.

In some embodiments, a second partition 171 is disposed in the second water pipe, the second partition 171 is provided with the second water outlet and a supporting hole (not labeled), the other end of the valve rod 21 is inserted into the supporting hole, and the spring 212 abuts against the second partition 171. By providing the second partition 171, the installation requirement of the valve rod 21 is satisfied, and the installation requirement of the spring 212 is satisfied, thereby facilitating the assembly of operators.

In other embodiments, the valve stem 21 is provided with a slidably mounted seat 241, the plug 24 is disposed on the seat 241, the spring 212 is sandwiched between the seat 241 and the second partition 171, and the seat 241 is disposed between the baffle 211 and the spring 212. The plug 24 is mounted on the valve rod 21 through the mounting seat 241, the plug 24 is generally formed by processing a sealing gasket, and the mounting seat 241 can drive the plug 24 to move on the valve rod 21 more smoothly in a reciprocating manner. In addition, the mounting seat 241 also facilitates positioning and mounting of the spring 212.

Wherein, mount pad 241 is sleeve structure, and mount pad 241 overlaps on valve rod 21, still is provided with sealing washer 242 between mount pad 241 and the valve rod 21. In order to avoid water flowing into the third water port from the gap between the mounting seat 241 and the valve rod 21, a sealing ring 242 may be added between the mounting seat 241 and the valve rod 21, and the sealing ring 242 slides along with the mounting seat 241 and seals the connection portion formed between the mounting seat 241 and the valve rod 21.

In the second embodiment, as shown in fig. 2 and fig. 31-33, the water heater 10 provided in the embodiments of the present application may include a water heater 10 body and a water inlet module provided in the above embodiments. The water heater 10 body comprises a water inlet end 101, a hot water end 102 and a water outlet end 103, wherein the water inlet module comprises a valve, at least part of the valve is arranged at the water inlet end 101 and is used for regulating the flow of cold water flowing into the water inlet end 101; at least a portion of the valve is disposed at the hot water end 102 and is configured to regulate the flow of cold water into the hot water end 102.

The water heater 10 may be a gas water heater, for which purpose the water heater 10 comprises:

a housing 100, wherein a water inlet manifold 108 and a water outlet manifold 107 are arranged on the housing 100;

a burner 20, the burner 20 for burning fuel gas;

the combustion chamber 30, the front panel 301 and the rear panel 302 of the combustion chamber 30 are provided with upwardly extending extensions 303, and a mounting area is formed between the two extensions 303;

a heat exchanger 40, the heat exchanger 40 including a heat exchange tube 401 and two end plates 402, the two end plates 402 being arranged opposite to each other, the heat exchange tube 401 penetrating the two end plates 402;

the fume collecting hood 50, the fume collecting hood 50 is provided with a fan 501;

wherein the burner 20, the combustion chamber 30, the heat exchanger 40 and the fume collecting hood 50 are arranged in the housing 100, the burner 20 is arranged at the bottom of the combustion chamber 30, the heat exchanger 40 is arranged in the installation area, and the fume collecting hood 50 is arranged above the heat exchanger 40; extension 303 is connected to the lower edge of fume collection hood 50, end plate 402 is connected between fume collection hood 50 and the side plate on the opposite side of combustion chamber 30, and heat exchange tube 401 is connected between water inlet manifold 108 and water outlet manifold 107.

Specifically, in the actual assembly process of the water heater 10, the heat exchanger 40 is perforated on the two end plates 402 and the heat exchange tubes 401 are correspondingly inserted, so that the heat exchange tubes 401 are fixedly mounted on the two end plates 402.

The heat exchanger 40 is not provided with a separate housing as a whole, and therefore, when the heat exchanger 40 is installed, the extending parts 303 formed on the front side and the rear side of the combustion chamber 302 are used as front and rear plate bodies of the heat exchanger 40, and the two extending parts 303 are spliced together with the two end plates in a ending manner to form an enclosing structure. In this way, the flue gases output upwards from the combustion chamber 30 are guided via the two extensions 303 between the two end plates 402, so that the flue gases can exchange heat with the water flowing in the heat exchange tubes 401.

At the same time, the top of the heat exchanger 40 is covered by the fume collecting hood 50. The fume collecting hood 50 is disposed on the top of the heat exchanger 40, the left and right sides of the fume collecting hood 50 will be connected with the end plates 402 of the heat exchanger 40, and the front and rear sides of the fume collecting hood 50 will be connected with the extension 303 extending upward of the combustion chamber 30, so that the fume is finally collected in the fume collecting hood 50 to be uniformly discharged.

In an embodiment of the present application, the heat exchange tube 401 is further provided with a plurality of fins 404, and the fins 404 are located between the two end plates 402.

Specifically, in the actual assembly process, for the heat exchange tube 401, a tube expansion manner may be adopted to provide a plurality of fins 404 on the outside of the heat exchange tube 401, and the fins 404 and the heat exchange tube 401 have better heat conduction capability, and after the tube expansion is completed on the heat exchange tube 401, the heat exchange tube is assembled on the two end plates 402.

By adding the fins 404 on the heat exchange tube 401, the expansion tube of the fin 404 heat exchange tube is formed on the heat exchange tube 401 and is in heat conduction connection with the heat exchange tube, and the heat exchange area with the flue gas can be increased through the fins 404, so that the overall heat exchange efficiency of the heat exchanger 40 is improved.

In one embodiment of the present application, the lower edge of the end plate 402 overlaps the side plate on the corresponding side, and the upper edge of the end plate 402 overlaps the lower edge of the hood 50.

Specifically, in the actual assembly process, the upper and lower edges of the end plate 402 may be respectively overlapped with the side plate and the smoke collecting hood 50 at the corresponding sides, and then the end plate 402 is connected with the side plate and the smoke collecting hood 50 by screws.

The end plate 402 is fixedly mounted to the lower end portion of the end plate 402 by lap-joint connection of the end plate 402 with the side plate on the corresponding side of the combustion chamber 30, and the end plate 402 and the side plate form an overlapping region, so that leakage of smoke from a connection portion formed between the end plate 402 and the side plate is reduced, and air tightness is improved.

Similarly, the upper end of the end plate 402 is fixedly mounted by lap-jointing the lower edge of the end plate 402 with the corresponding side of the fume collecting hood 50, and the end plate 402 and the fume collecting hood 50 form an overlapping area to reduce the leakage of fume from the joint formed between the end plate 402 and the fume collecting hood 50, thereby improving the air tightness.

In one embodiment of the present application, the extension 303 overlaps the lower edge of the hood 50.

Specifically, for the combustion chamber 30 and the fume collecting hood 50, the combustion chamber 30 and the fume collecting hood 50 are connected and fixed by the extension 303. Similarly, the extension 303 is fastened by screws after overlapping the hood 50.

By lap-connecting the upper end of the extension 303 with the lower edge of the fume collecting hood 50, good fixing and sealing are achieved around the heat exchanger 40, and no separate shell is required to be configured for the heat exchanger 40, so that the overall structure is effectively simplified.

In one embodiment of the present application, the inner surface of the combustion chamber 30 is provided with an insulating layer 304.

Specifically, since the gas burned by the burner 20 generates high temperature flue gas in the combustion chamber 30, the high temperature flue gas will generate heat radiation to the periphery of the combustion chamber 30. The heat insulation layer 304 protects the inner wall of the combustion chamber 30, so that the combustion chamber 30 is prevented from conducting heat outwards to cause overheating of the housing 100, and the heat insulation layer 304 reduces the leakage of heat of the flue gas, so that the heating efficiency of the flue gas to the heat exchange tube 401 is improved, and the energy utilization is improved.

In an embodiment of the present application, the preheating device 60 is further included, the preheating device 60 includes a heat exchange box 601 and a preheating pipe (not shown), a communication port 62 is provided on the heat exchange box 601, a smoke exhaust pipe 602 is further provided on the heat exchange box 601, and the preheating pipe is located in the heat exchange box 601; the heat exchange box 601 is arranged in the shell 100, the communication port is communicated with the smoke outlet of the smoke collecting hood 50, and the second communication port is connected with the heat exchange tube 401 through the preheating tube.

Specifically, for the preheating device 60, it introduces the smoke collected by the smoke collecting hood 50 therein through the heat exchanging box 601 and outputs from the smoke discharging pipe 602. Meanwhile, the preheating pipe in the heat exchange box 601 is connected to the water inlet side of the heat exchange pipe 401, so that water entering the heat exchange pipe 401 can flow into the preheating pipe to be preheated by flue gas.

Through adding preheating device 60, the heat exchange box 601 in preheating device 60 communicates with collection petticoat pipe 50 for the flue gas can export outdoors by exhaust pipe 602 again via heat exchange box 601, and, set up in the heat exchange box 601 the preheating tube can preheat the cold water that flows into in the heat exchange tube 401, with abundant utilization flue gas waste heat heats the water that flows in the preheating tube, and then improves the utilization ratio of gas heat.

In one embodiment of the present application, the preheating device 60 is disposed on one side of the hood 50.

Specifically, by disposing the preheating device 60 at one side of the fume collecting hood 50 to fully utilize the inner space within the housing 100 to install and distribute the respective functional components, the space utilization is improved.

In one embodiment of the present application, the fume collecting hood 50 is provided with the fume exhaust port on the side surface, and the fume exhaust port is communicated with the communication port through a horizontally arranged fume channel.

Specifically, the smoke outlet is formed in the side face of the smoke collecting cover 50, so that the smoke is conveniently connected with the heat exchange box 601 on one side through the smoke channel, and the smoke is conveniently and rapidly conveyed into the heat exchange box 601 from the smoke collecting cover 50.

In an embodiment of the present application, the heat exchanger 40 further includes a bypass pipe 403, and the bypass pipe 403 is connected between two ends of the heat exchange pipe 401.

Specifically, the bypass pipe 403 is welded between both ends of the heat exchange pipe 401, for example: holes may be formed in the wall of both ends of the heat exchange tube 401, and then the bypass tube 403 may be inserted into the corresponding holes to be welded.

Through connecting through bypass pipe 403 at the both ends of heat exchange tube, the pipe diameter of bypass pipe 403 is less, can make partial cold water not pass through the flue gas heating of combustion chamber 30 to more effective regulation temperature.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A water heater, comprising:

a fume collecting hood, on which a fan is arranged;

2. The water heater of claim 1, wherein the valve assembly comprises a valve stem, a valve sleeve and a plug fixedly disposed on the valve stem in sequence, the plug slidably disposed over the valve stem and disposed proximate an end of the valve stem; the driver is arranged on the valve body and is configured to drive the valve rod to rotate and drive the valve rod to move along the axis; the valve rod is rotatably arranged on the valve body and can move relative to the valve body in the rotating process, the valve sleeve and the plug are positioned in the valve body, the valve sleeve is arranged on one side of the second water port and used for adjusting the opening of the second water port, and the plug is arranged opposite to the third water port and used for adjusting the opening of the third water port; the valve rod is provided with a baffle and a spring, the plug is positioned between the baffle and the spring, and the spring is abutted against the valve body.

3. The water heater of claim 2, wherein the valve body is provided with a first water pipe, a second water pipe and a third water pipe, the first water pipe forming the first water port, the second water pipe forming the second water port, the third water pipe forming the third water port.

4. A water heater according to claim 3, wherein a first partition is provided in the second water pipe, and the second water port and the fourth water port are provided on the first partition; the side wall of the valve sleeve is provided with a water flow passage communicated with the communication port; the water flow passage is configured to communicate with the fourth water port with the valve housing rotating to block the second water port.

5. A water heater according to claim 3, wherein a second diaphragm is provided in the second water tube, the second diaphragm being provided with a second water outlet and a support hole, the other end of the valve stem being inserted in the support hole, the spring being held against the second diaphragm.

6. The water heater of claim 5, wherein the valve stem is provided with a slidably mounted seat, the plug is disposed on the seat, the spring is sandwiched between the seat and the second diaphragm, and the seat is located between the flap and the spring.

7. The water heater of claim 1, wherein a lower edge of the end plate overlaps the side plate on the corresponding side and an upper edge of the end plate overlaps a lower edge of the fume collection hood.

8. The water heater of claim 1, wherein a lower edge of the end plate overlaps the side plate on the corresponding side and an upper edge of the end plate overlaps a lower edge of the fume collection hood.

9. The water heater of claim 1, wherein an inner surface of the combustion chamber is provided with a thermal insulation layer.

10. The water heater according to claim 1, further comprising a preheating device, wherein the preheating device comprises a heat exchange box body and a preheating pipe, a communication port is arranged on the heat exchange box body, a smoke exhaust pipe is further arranged on the heat exchange box body, and the preheating pipe is positioned in the heat exchange box body; the heat exchange box body is arranged in the shell, the communication port is communicated with the smoke outlet of the smoke collecting hood, and the second water port is connected with the water inlet end of the heat exchange tube through the preheating tube.