WO2021180097A1

WO2021180097A1 - Electronic thermostatic valve and water heater having same

Info

Publication number: WO2021180097A1
Application number: PCT/CN2021/079836
Authority: WO
Inventors: 卢淑霞
Original assignee: 芜湖美的厨卫电器制造有限公司; 美的集团股份有限公司
Priority date: 2020-03-09
Filing date: 2021-03-09
Publication date: 2021-09-16
Also published as: CN113374894A

Abstract

An electronic thermostatic valve and a water heater having same. The electronic thermostatic valve (100) comprises: a valve body (10), a valve core cavity (11) being defined in the valve body, the valve core cavity having a cold water inlet (111), a hot water inlet (112) and a mixed water outlet (113); a valve core (20), the valve core being rotatably connected to the valve body, the valve core having an adjustment portion (21) located in the valve core cavity, the adjustment portion being configured as a hollow structure to define a pre-mixing cavity (21a) therein, the pre-mixing cavity having an adjustment opening (211) and a pre-mixed water outlet (212), the pre-mixing cavity being capable to be in communication with at least one of the cold water inlet and the hot water inlet by means of the adjustment opening, and the pre-mixed water outlet being in communication with the mixed water outlet. The electronic thermostatic valve has the advantages of a simple valve core structure, being convenient to make an adjustment, etc., and can precisely control the mixing ratio of cold water to hot water.

Description

Electronic thermostatic valve and water heater with same

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 2020101568277, and the invention title is "Electronic Thermostatic Valve and Water Heater with the same" on March 9, 2020, the entire content of which is incorporated into this application by reference middle.

Technical field

This application relates to the technical field of water heaters, in particular to an electronic thermostatic valve and a water heater with the same.

Background technique

At present, there are various design schemes for electronic thermostatic valves on the market, and motors and regulating valve cores are usually used to automatically adjust the regulating ratio of cold and hot water. A ceramic valve core is proposed in the related art. The opening of the ceramic valve core can be adjusted by adjusting the steering angle. However, the structure is complex and the valve core coordination is high. When the water quality is poor, it is prone to blockage. Or the phenomenon of hot and cold water cascading, resulting in poor adjustment accuracy.

Summary of the invention

The embodiments of the present application provide an electronic thermostatic valve and a water heater having the same to solve or alleviate one or more technical problems in the prior art.

In the first aspect, an embodiment of the present application provides an electronic thermostatic valve, including:

Valve body, the inside of the valve body defines a valve core cavity, the valve core cavity has a cold water inlet, a hot water inlet and a mixed water outlet;

The valve core, the valve core and the valve body are rotatably connected, the valve core has an adjustment part located in the valve core cavity, the adjustment part is configured as a hollow structure to define a pre-mixing cavity inside, and the pre-mixing cavity has an adjustment opening and a pre-mixing For the water outlet, the pre-mixing cavity can be communicated with at least one of the cold water inlet and the hot water inlet through the regulating opening, and the pre-mixed water outlet is communicated with the mixed water outlet.

In one embodiment, the adjusting opening is provided on the peripheral wall of the adjusting part, the pre-mixed water outlet is provided at the end of the adjusting part, and the opening directions of any two of the pre-mixed water outlet, the cold water inlet and the hot water inlet are perpendicular to each other.

In one embodiment, the outer surface of the adjustment part is configured as a spherical surface.

In one embodiment, the opening angle of the adjustment opening in the circumferential direction of the adjustment portion is 60-90 degrees.

In an embodiment, the inside of the valve body further defines a secondary mixing cavity, and the secondary mixing cavity and the valve core cavity are in communication through the mixed water outlet.

In one embodiment, the central axis of the secondary mixing cavity is parallel to the central axis of the pre-mixing cavity, and the central axis of the secondary mixing cavity is located below the central axis of the pre-mixing cavity.

In one embodiment, the inner wall of the secondary mixing chamber is provided with spoiler strips. The spoiler strips are arranged at intervals along the circumference of the secondary mixing chamber, and each spoiler strip is along the axial direction of the secondary mixing chamber. extend.

In one embodiment, a sealing gasket is provided between the cold water inlet and the outer surface of the regulating part and/or between the hot water inlet and the outer surface of the regulating part.

In one embodiment, the electronic thermostatic valve further includes a drive assembly, which is drivingly connected with the spool to drive the spool to rotate around its central axis, and the drive assembly includes:

Motor, the motor is installed on the valve body;

Driving gear, the driving gear is coaxially arranged with the output shaft of the motor;

The driven gear, the driven gear and the driving gear are meshed and arranged, and the driven gear and the valve core are arranged coaxially.

In an embodiment, the electronic thermostatic valve further includes:

The control device, which is electrically connected with the motor, is used to control the rotation direction and the rotation angle of the motor.

In one embodiment, the valve body is provided with a water flow sensor, a first temperature sensor, and a second temperature sensor that are electrically connected to the control device. The water flow sensor is used to detect the flow of cold water entering the cold water inlet, and the first temperature sensor is used to detect The temperature of the cold water entering the cold water inlet, and the second temperature sensor is used to detect the temperature of the mixed water flowing out of the mixed water outlet.

In one embodiment, the valve body is provided with a cold water input connector, a hot water input connector, a cold water output connector, and a mixed water output connector; the hot water input connector is connected with the hot water inlet, and the mixed water output connector is connected with the mixed water outlet; a valve The inside of the body is provided with a first cold water flow path and a second cold water flow path, the cold water input joint and the cold water inlet are communicated through the first cold water flow path, and the cold water output joint and the cold water input joint are communicated through the second cold water flow path.

In one embodiment, the valve core is provided with limiting ribs extending radially outward, and the outer surface of the valve body is provided with limiting protrusions, and the limiting ribs cooperate with the limiting protrusions to limit the valve core Maximum rotation angle.

In one embodiment, the material of the valve core is copper.

In the second aspect, an embodiment of the present application provides a water heater, which includes the electronic thermostatic valve according to the foregoing embodiment of the present application.

The embodiment of the application adopts the above-mentioned technical solution to control the flow area between the opening and the hot water inlet and the cold water inlet by adjusting the rotation angle of the valve core, thereby adjusting the ratio of cold water and hot water entering the pre-mixing chamber to form a certain The temperature of the thermostatic water has a simple structure and convenient adjustment of the valve core, and can precisely control the mixing ratio of cold water and hot water.

The above summary is only for the purpose of description and is not intended to be limiting in any way. In addition to the illustrative aspects, implementations, and features described above, further aspects, implementations, and features of the present application will be easily understood by referring to the accompanying drawings and the following detailed description.

Description of the drawings

In the drawings, unless otherwise specified, the same reference numerals refer to the same or similar parts or elements throughout the multiple drawings. The drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed according to the present application, and should not be regarded as limiting the scope of the present application.

Fig. 1 shows a schematic structural diagram of an electronic thermostatic valve according to an embodiment of the present application;

Figure 2 shows an exploded view of an electronic thermostatic valve according to an embodiment of the present application;

Figure 3 shows a cross-sectional view of an electronic thermostatic valve according to an embodiment of the present application;

Figure 4 shows a cross-sectional view of an electronic thermostatic valve according to an embodiment of the present application;

Figure 5 shows a partial cross-sectional view of an electronic thermostatic valve according to an embodiment of the present application;

Fig. 6 shows a diagram of the positional relationship between the valve core of the electronic thermostatic valve and the cold water inlet and the hot water inlet according to an embodiment of the present application;

Fig. 7 shows a schematic structural diagram of a valve core of an electronic thermostatic valve according to an embodiment of the present application;

Fig. 8 shows a partial structural diagram of an electronic thermostatic valve according to an embodiment of the present application.

Detailed ways

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art can realize, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

The electronic thermostatic valve 100 according to an embodiment of the present application will be described below with reference to FIGS. 1 to 8. The electronic thermostatic valve 100 according to the embodiment of the present application can be used in water heating devices such as gas water heaters and electric water heaters.

As shown in FIGS. 1 to 6, the electronic thermostatic valve 100 according to the embodiment of the present application includes a valve body 10 and a valve core 20.

A valve core cavity 11 is defined inside the valve body 10, and the valve core cavity 11 has a cold water inlet 111, a hot water inlet 112 and a mixed water outlet 113.

In an example, the valve body 10 is provided with a cold water input connector 13, a hot water input connector 14 and a mixed water output connector 15. The cold water input connector 13 communicates with the cold water inlet 111, the hot water input connector 14 communicates with the hot water inlet 112, and the mixed water output connector 15 communicates with the mixed water outlet 113. The cold water input connector 13 is used to connect other cold water input pipelines such as tap water pipes, and is used to input cold water to the cold water inlet 111; the hot water input connector 14 is used to connect the hot water output pipeline of the water heater and is used to input heat to the hot water inlet 112. Water; The mixed water output connector 15 is used to connect the mixed water output pipeline, and is used to export the mixed constant temperature water from the valve body 10. The hot water input joint 14 includes a joint positioning plug 141 and a joint nut 142. The joint positioning plug 141 is provided on the valve body 10, and the joint nut 142 is fixed to the joint positioning plug 141. Both the cold water input joint 13 and the mixed water output joint 15 can be used The same structure as the hot water input connector 14.

The valve core 20 is rotatably connected with the valve body 10, and the valve core 20 has an adjusting part 21 located in the valve core cavity 11. The adjusting part 21 is configured as a hollow structure to define a pre-mixing cavity 21a therein, and the pre-mixing cavity 21a It has a regulating opening 211 and a pre-mixed water outlet 212, the pre-mixing cavity 21 a is in communication with at least one of the cold water inlet 111 and the hot water inlet 112 through the regulating opening 211, and the pre-mixed water outlet 212 is in communication with the mixed water outlet 113.

In an example, as shown in FIG. 6, the cold water inlet 111 and the hot water inlet 112 are respectively located at the side of the adjusting part 21, and the central axis of the cold water inlet 111 and the central axis of the hot water inlet 112 form a certain angle. It can be understood that the direction of the central axis of the cold water inlet 111 is consistent with the direction of cold water flowing out of the cold water inlet 111; the central axis of the hot water inlet 112 is consistent with the direction of hot water flowing out of the hot water inlet 112. The adjustment opening 211 has a certain opening angle in the circumferential direction of the adjustment portion 21. During the rotation of the valve core 20 around its central axis, the adjustment opening 211 can be connected to the cold water inlet 111 alone, or to the hot water inlet 112 alone, or with The cold water inlet 111 and the hot water inlet 112 are connected at the same time. It is understandable that by adjusting the rotation angle of the valve core 20, the flow area of the opening 211 and the cold water inlet 111 or the hot water inlet 112 can be controlled, so as to adjust the ratio of cold water and hot water entering the pre-mixing chamber 21a. Mixed water at a certain temperature.

It is worth noting that in the example of the present application, the valve core 20 can be rotated to an angle at which the adjustment opening 211 is not connected to the cold water inlet 111 and the hot water inlet 112, and within this angle range, the adjustment opening 211 and the cold water inlet 111 And the circulation area of the hot water inlet 112 is zero. In other words, the outer peripheral wall of the part other than the adjusting opening 211 of the adjusting part 21 can close the cold water inlet 111 and the hot water inlet 112, and the flow rates of cold water and hot water flowing into the premixing chamber 21a are both zero at this time.

Preferably, the adjusting opening 211 is provided on the peripheral wall of the adjusting portion 21, the pre-mixed water outlet 212 is provided at the end of the adjusting portion 21, and the opening direction of any two of the pre-mixed water outlet 212, the cold water inlet 111 and the hot water inlet 112 Perpendicular to each other. Wherein, the opening directions of the pre-mixed water outlet 212, the cold water inlet 111 and the hot water inlet 112 refer to the direction of their central axis.

In an example, as shown in FIG. 3, the central axis of the hot water inlet 112 is arranged in the up and down direction, and the central axis of the pre-mixed water outlet 212 is arranged in the forward and backward directions. As shown in FIG. 4, the central axis of the cold water inlet 111 is arranged along the Set in left and right directions. In this way, the flow directions of the cold water and hot water entering the pre-mixing chamber 21a are perpendicular to each other, so that the mixing effect of cold water and hot water can be improved. The arrangement in a three-dimensional coordinate structure can save the size of the valve body 10 in the vertical direction, thereby saving the installation space of the electronic thermostatic valve 100.

Compared with the related art valve core that controls the mixing ratio of cold water and hot water by adjusting the stroke, the valve core adjusts the opening size of the cold water port or the hot water port by adjusting the number of turns of the valve core thread. The mandrel is long, the stroke is large, and there is a problem of large axial offset, which leads to low adjustment accuracy. In the electronic thermostatic valve 100 of the embodiment of the present application, the valve core 20 is provided with a hollow pre-mixing chamber 21a and an adjustment opening 211 communicating with the pre-mixing chamber 21a. By adjusting the rotation angle of the valve core 20, the adjustment opening 211 and the The hot water inlet 112 and the circulation area with the cold water inlet 111 adjust the ratio of cold water and hot water entering the pre-mixing chamber 21a to form constant temperature water. Therefore, the electronic thermostatic valve 100 of the embodiment of the present application can precisely control the mixing ratio of hot and cold water by controlling the rotation angle of the valve core 20, which solves the problem of the large axial deviation of the valve core in the related art. Technical problem of low adjustment accuracy.

Furthermore, compared to the regulating valve core with ceramic discs in the related art, the regulating valve core adjusts the mixing ratio of cold water and hot water by controlling the steering angle of the ceramic disc. However, due to the complicated structure of the ceramic disc, the regulating valve The core has high requirements for the matching degree of the ceramic sheet, resulting in low adjustment accuracy. In the electronic thermostatic valve 100 of the embodiment of the present application, the adjusting part 21 of the spool 20 and the spool cavity 11 are rotationally matched, and by adjusting the rotation angle of the spool 20, the adjusting opening 211 on the adjusting part 21 and the spool cavity can be controlled. The hot water inlet 112 on 11 and the flow area with the cold water inlet 111 can thereby adjust the ratio of cold water and hot water entering the pre-mixing chamber 21a. Therefore, the valve body 10 and the valve core 20 of the electronic thermostatic valve 100 of the embodiment of the present application have a simple structure and convenient adjustment, which is beneficial to improve the degree of cooperation between the valve body 10 and the valve core 20, and solves the problem of adjusting the valve core in the related art. Due to the complex structure of the ceramic sheet, there is a technical problem with a low degree of coordination.

In addition, according to the electronic thermostatic valve 100 of the embodiment of the present application, by setting the opening directions of any two of the premixed water outlet 212, the cold water inlet 111, and the hot water inlet 112 perpendicular to each other, the premixing of cold water and hot water can be improved. The mixing effect in the cavity 21a improves the thermostatic effect of the mixed water, and is beneficial to reduce the size of the valve body 10 in the vertical direction and reduce the installation space of the electronic thermostatic valve 100.

Therefore, the electronic thermostatic valve 100 according to the embodiment of the present application has the advantages of simple structure, convenient adjustment, and good thermostatic effect.

In one embodiment, as shown in FIGS. 6 and 7, the outer surface of the adjustment portion 21 is configured as a spherical surface.

In an example, the cross-sectional shape of the cold water inlet 111 and the hot water inlet 112 may both be circular. By setting the shape of the outer surface of the adjusting part 21 to be a spherical surface, the outer surface of the adjusting part 21 and the cold water inlet 111 and the heat can be improved. The degree of adhesion of the water inlet 112 improves the sealing effect between the outer surface of the adjusting portion 21 and the cold water inlet 111 and the hot water inlet 112.

In one embodiment, as shown in FIG. 7, the opening angle α of the adjusting opening 211 in the circumferential direction of the adjusting portion 21 is 60-90 degrees. The opening angle α of the adjustment opening 211 in the circumferential direction of the adjustment portion 21 can be understood as the central angle of the arc formed by the projection of the adjustment opening 211 on a plane perpendicular to the central axis of the adjustment portion 21. Wherein, the opening angle α is smaller than the opening angles of the cold water inlet 111 and the hot water inlet 112 in the circumferential direction of the adjusting part 21, thereby ensuring the sealing performance of the premixing chamber 21a and the cold water inlet 111 and the hot water inlet 112 and avoiding premixing The water in the cavity 21a enters the valve core cavity 11.

It should be noted that if the opening angle α of the adjustment opening 211 is less than 60 degrees, the size of the adjustment opening 211 in the circumferential direction of the adjustment portion 21 is too small, which may cause the adjustment opening 211 to always be unable to communicate with each other during the rotation of the valve core 20. The hot water inlet 112 and the cold water inlet 111 are in communication at the same time; if the opening angle α of the adjustment opening 211 is greater than 90 degrees, the size of the adjustment opening 211 in the circumferential direction of the adjustment portion 21 is too large, which may cause the valve core 20 to rotate during the rotation of the valve core 20. The adjustment opening 211 is always in communication with the hot water inlet 112 or the cold water inlet 111 at the same time. Therefore, the opening angle α of the adjustment opening 211 in the circumferential direction of the adjustment portion 21 is suitably set in the range of 60-90 degrees.

In an example, the opening angle α of the adjustment opening 211 in the circumferential direction of the adjustment portion 21 may be 75 degrees. The following specifically describes the relationship between the rotation angle of the valve core 20 and the mixing ratio of cold water and hot water entering the premixing chamber 21a. Wherein, when the valve core 20 rotates in the clockwise direction, when the flow area between the regulating opening 211 and the hot water inlet 112 is just greater than zero, the rotation angle of the valve core 20 is 0 degrees.

When the rotation angle of the valve core 20 is rotated from 0 degrees to 12 degrees, the position of the adjustment opening 211 corresponds to the position of the hot water inlet 112, and the outer surface of the adjustment part 21 without the adjustment opening 211 blocks the cold water inlet 111 At this time, the regulating opening 211 is only connected with the hot water inlet 112, and the hot water enters the pre-mixing chamber 21a and then flows out from the pre-mixed water outlet 212 to realize the fully open hot water function of the electronic thermostatic valve 100. The fully open hot water function is suitable for When the water heater is installed for the first time and needs to be emptied, or when the water heater has insufficient hot water, the hot water needs to be fully turned on to ensure the mixed water temperature.

During the rotation angle of the valve core 20 from 13 degrees to 92 degrees, the position of the adjustment opening 211 is rotated from the hot water inlet 112 to the cold water inlet 111, and the adjustment opening 211 is connected to the hot water inlet 112 and the cold water inlet 111 at the same time. , And the circulation area of the regulating opening 211 and the hot water inlet 112 gradually decreases, the circulation area of the regulating opening 211 and the cold water inlet 111 gradually increases, and the mixing ratio of hot water and cold water entering the pre-mixing chamber 21a gradually decreases. Controlling the rotation angle of the valve core 20 within this range can achieve different mixing ratios of cold water and hot water, thereby forming mixed water at a certain temperature, so as to realize the mixing warm water function of the electronic thermostatic valve 100. Wherein, when the rotation angle reaches 92 degrees, the circulation area between the regulating opening 211 and the hot water inlet 112 is zero, and the circulation area between the regulating opening 211 and the cold water inlet 111 reaches the maximum.

When the rotation angle of the valve core 20 is rotated from 93 degrees to 118 degrees, the position of the adjustment opening 211 corresponds to the position of the cold water inlet 111, and the outer surface of the adjustment portion 21 without the adjustment opening 211 blocks the hot water inlet 112 During this process, the regulating opening 211 is only connected with the cold water inlet 111 and the circulation area is kept at the maximum value. The cold water enters the pre-mixing chamber 21a and then flows out from the pre-mixed water outlet 212. In order to realize the fully open cold water function of the electronic thermostatic valve 100, the fully open cold water function is suitable for situations where the temperature of cold water is relatively high in summer and there is no need to mix high temperature hot water. When the rotation angle of the valve core 20 is rotated from 119 degrees to 183 degrees, the adjustment opening 211 only communicates with the cold water inlet 111 and the flow area of the two is gradually reduced to zero.

When the rotation angle of the valve core 20 is rotated from 184 degrees to 220 degrees, the adjustment opening 211 is not connected with the hot water inlet 112 and the cold water inlet 111, and the outer surface of the adjustment portion 21 without the adjustment opening 211 blocks the cold water inlet 111 and the hot water inlet 112, the flow of cold water and hot water entering the pre-mixing chamber 21a during this process are all zero, so as to realize the function of fully closing the cold and hot water of the electronic thermostatic valve 100.

In one embodiment, as shown in FIGS. 3 and 5, the inside of the valve body 10 further defines a secondary mixing cavity 12, and the secondary mixing cavity 12 and the valve core cavity 11 are in communication through a mixed water outlet 113. Thus, after the mixed water in the pre-mixing chamber 21a flows out through the pre-mixed water outlet 212, it enters the secondary mixing chamber 12 through the mixed water outlet 113 for secondary mixing, so as to further improve the mixing effect of cold water and hot water. The constant temperature effect is better.

Optionally, as shown in FIG. 3, the central axis of the secondary mixing cavity 12 is parallel to the central axis of the pre-mixing cavity 21a, and the central axis of the secondary mixing cavity 12 is located in the vertical direction of the central axis of the pre-mixing cavity 21a. Below.

In an example, the central axis of the secondary mixing cavity 12 and the central axis of the pre-mixing cavity 21a are horizontally arranged along the front and rear directions in the figure, wherein the secondary mixing cavity 12 is located below the pre-mixing cavity 21a. Further, the mixed water outlet 113 is located between the spool cavity 11 and the secondary mixing cavity 12 in the up and down direction. After the mixed water in the premixing cavity 21a enters the spool cavity 11 through the premixing water outlet 212, it is in the spool cavity Under the guiding action of the inner wall of 11 along the vertical direction, the mixed water flows downwardly into the secondary mixing chamber 12 through the mixed water outlet 113.

Optionally, the inner wall of the secondary mixing chamber 12 is provided with spoiler bars 121. The spoiler bars 121 are a plurality of spoiler bars 121 arranged at intervals along the circumference of the secondary mixing cavity 12, and each spoiler bar 121 is arranged along the secondary mixing cavity 12.的axial extension. Specifically, the spoiler 121 is formed by the inner wall of the secondary mixing chamber 12 protruding in the direction toward the central axis of the secondary mixing chamber 12. The mixed water forms a turbulence during the process of passing through the plurality of spoilers 121, thereby further The mixing effect of cold water and hot water is improved, and the constant temperature effect of the mixed water is better.

In one embodiment, a sealing gasket is provided between the cold water inlet 111 and the outer surface of the adjusting portion 21 and/or between the hot water inlet 112 and the outer surface of the adjusting portion 21. In other words, a sealing gasket may be provided between the cold water inlet 111 and the outer surface of the adjusting portion 21, or a gasket may be provided between the hot water inlet 112 and the outer surface of the adjusting portion 21, or the cold water inlet 111 and the adjusting portion 21 may be provided with a gasket. Seal gaskets are provided between the outer surface of the hot water inlet 112 and the outer surface of the adjusting part 21 to improve the sealing performance of the pre-mixing chamber 21a and prevent the mixed water from flowing from the outer surface of the adjusting part 21 and the cold water inlet 111 and/or The gap between the hot water inlets 112 flows out. Wherein, the gasket may be fixed on the end surface of the cold water inlet 111 or the hot water inlet 112. Preferably, the material of the gasket may be polytetrafluoroethylene, which has the characteristics of resistance to acid, alkali, and various organic solvents, thereby increasing the service life of the gasket.

In one embodiment, as shown in FIGS. 1 and 2, the electronic thermostatic valve 100 further includes a driving assembly 30 which is drivingly connected to the valve core 20 to drive the valve core 20 to rotate around its central axis. The driving assembly 30 includes a motor 31, a driving gear 32 and a driven gear 33. Wherein, the motor 31 is installed on the valve body 10, the driving gear 32 is arranged coaxially with the output shaft of the motor 31, the driven gear 33 is arranged in mesh with the driving gear 32, and the driven gear 33 and the valve core 20 are arranged coaxially. The end of the valve core 20 protruding from the valve core cavity 11 is provided with a connecting portion 23, and the connecting portion 23 is in interference fit with the center hole of the driven gear 33.

In an example, as shown in FIGS. 2 and 8, the driving assembly 30 further includes a mounting plate 34. The valve body 10 includes a valve core mounting portion 10a, and the valve core cavity 11 is defined by the inside of the valve core mounting portion 10a. The mounting plate 34 is fixed to the end surface of the valve core mounting portion 10 a. The mounting plate 34 is provided with a through hole. The part of the valve core 20 protruding from the valve core cavity 11 passes through the through hole. The motor 31 is mounted on the mounting plate 34.

In an example, as shown in FIG. 8, the valve core 20 is provided with a limiting rib 22 extending radially outward, and the end surface of the valve core mounting portion 10a is provided with a limiting protrusion 19, and the limiting rib 22 is connected to the limiting rib 22. The protrusion 19 is matched with a stopper to limit the maximum angle at which the valve core 20 rotates clockwise or counterclockwise.

In one embodiment, as shown in FIGS. 1 and 2, the electronic thermostatic valve 100 further includes a control device, which is electrically connected to the motor 31 for controlling the rotation direction and the rotation angle of the motor 31.

In an example, the valve body 10 is provided with a water flow sensor 41, a first temperature sensor 42, and a second temperature sensor 43 that are electrically connected to the control device. The water flow sensor 41 is used to detect the flow of cold water entering the cold water inlet 111, and the first temperature The sensor 42 is used to detect the temperature of the cold water entering the cold water inlet 111, and the second temperature sensor 43 is used to detect the temperature of the mixed water flowing out of the mixed water outlet 113. Wherein, the water flow sensor 41 may be provided at the cold water input connector 13, the first temperature sensor 42 is provided at the cold water flow channel between the water flow sensor 41 and the cold water inlet 111, and the second temperature sensor 43 is provided at the secondary mixing chamber 12.

The control method of the electronic thermostatic valve 100 according to an embodiment of the present application will be described below. When the cold water input interface is connected to cold water, the water flow sensor 41 sends the detected cold water flow data to the control device, and the first temperature sensor 42 sends the detected cold water temperature data to the control device, and the control device according to the temperature of the cold water, The temperature of the hot water and the pre-adjusted temperature of the mixed water are controlled to rotate the motor 31 to an initial angle to adjust the initial mixing ratio of cold water and hot water. The second temperature sensor 43 sends the temperature data of the mixed water in the secondary mixing chamber 12 to the control device. When the temperature of the mixed water deviates from the pre-adjusted temperature, the control device adjusts the rotation angle of the motor 31 again (positive adjustment or negative adjustment). Adjust) to adjust the temperature of the mixed water to the pre-adjusted temperature.

In one embodiment, as shown in FIG. 4, the valve body 10 is further provided with a cold water output joint 16, and the valve body 10 is provided with a first cold water flow path 17 and a second cold water flow path 18, and the cold water input joint 13 and The cold water inlet 111 is communicated through the first cold water flow path 17, and the cold water output joint 16 and the cold water input joint 13 are communicated through the second cold water flow path 18. Wherein, the cold water output connector 16 can be connected to the cold water input end of the water heater to deliver the cold water to be heated to the water heater.

In one embodiment, the material of the valve core 20 is copper.

In the second aspect, an embodiment of the present application provides a water heater, which includes the electronic thermostatic valve 100 according to the embodiment of the present application. Among them, the water heater can be a gas water heater or an electric water heater.

Other configurations of the water heater in the above embodiment can be adopted in various technical solutions known to those of ordinary skill in the art now and in the future, and will not be described in detail here.

According to the electronic thermostatic valve 100 of the embodiment of the present application, the valve core 20 is provided with a hollow pre-mixing chamber 21a and an adjustment opening 211 communicating with the pre-mixing chamber 21a. By adjusting the rotation angle of the valve core 20, the adjustment opening 211 can be controlled. The flow area with the hot water inlet 112 and the cold water inlet 111 can adjust the ratio of cold water and hot water entering the pre-mixing chamber 21a to form constant temperature water. Therefore, the valve core 20 has a simple structure and convenient adjustment. , And can precisely control the mixing ratio of cold water and hot water. Furthermore, by arranging the opening directions of any two of the premixed water outlet 212, the cold water inlet 111, and the hot water inlet 112 to be perpendicular to each other, the mixing effect of the cold water and hot water in the premixing chamber 21a can be improved, thereby improving the mixing The thermostatic effect of water is beneficial to reducing the size of the valve body 10 in the vertical direction and reducing the installation space of the electronic thermostatic valve 100.

In the description of this specification, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "Radial", "Circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the pointed device or The element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, "multiple" means two or more than two, unless otherwise specifically defined.

In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , Or integrated; it can be a mechanical connection, it can be an electrical connection, it can also be communication; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction relationship between two components . For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood according to specific circumstances.

In this application, unless expressly stipulated and defined otherwise, the "on" or "under" of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them. Moreover, the "above", "above" and "above" of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature. The “below”, “below” and “below” of the first feature of the second feature include the first feature directly above and diagonally above the second feature, or it simply means that the level of the first feature is smaller than the second feature.

The above disclosure provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are only examples, and are not intended to limit the application. In addition, the present application may repeat reference numerals and/or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and/or settings discussed.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of various changes or changes within the technical scope disclosed in this application. Replacement, these should be covered in the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

An electronic thermostatic valve, characterized in that it comprises:

A valve body, the inside of the valve body defines a valve core cavity, the valve core cavity having a cold water inlet, a hot water inlet, and a mixed water outlet;

A valve core, the valve core is rotatably connected with the valve body, the valve core has an adjustment portion located in the valve core cavity, and the adjustment portion is configured as a hollow structure to define a pre-mixing cavity inside the valve core The pre-mixing cavity has an adjusting opening and a pre-mixed water outlet, the pre-mixing cavity can communicate with at least one of the cold water inlet and the hot water inlet through the adjusting opening, and the pre-mixing water outlet is connected to The mixed water outlet is in communication.
The electronic thermostatic valve according to claim 1, wherein the adjusting opening is provided on the peripheral wall of the adjusting part, the pre-mixed water outlet is provided at the end of the adjusting part, and the pre-mixed water outlet , The opening directions of any two of the cold water inlet and the hot water inlet are perpendicular to each other.
The electronic thermostatic valve according to claim 1, wherein the outer surface of the adjusting part is configured as a spherical surface.
The electronic thermostatic valve according to claim 1, wherein the opening angle of the adjusting opening in the circumferential direction of the adjusting portion is 60-90 degrees.
The electronic thermostatic valve according to claim 1, wherein the inside of the valve body further defines a secondary mixing cavity, and the secondary mixing cavity is communicated with the valve core cavity through a mixed water outlet.
The electronic thermostatic valve according to claim 5, wherein the central axis of the secondary mixing cavity is parallel to the central axis of the pre-mixing cavity, and the central axis of the secondary mixing cavity is located in the pre-mixing cavity. Below the central axis of the cavity.
The electronic thermostatic valve according to claim 5, wherein the inner wall of the secondary mixing chamber is provided with spoilers, and the spoilers are a plurality of spoilers arranged at intervals along the circumference of the secondary mixing chamber. Each of the spoilers extends along the axial direction of the secondary mixing cavity.
The electronic thermostatic valve according to claim 1, wherein a seal is provided between the cold water inlet and the outer surface of the adjusting portion and/or between the hot water inlet and the outer surface of the adjusting portion pad.
The electronic thermostatic valve according to any one of claims 1 to 8, further comprising a drive assembly, the drive assembly is in transmission connection with the spool to drive the spool to rotate around its central axis, so The drive components include:

A motor, the motor is installed on the valve body;

Driving gear, the driving gear is coaxially arranged with the output shaft of the motor;

A driven gear, the driven gear is meshed with the driving gear, and the driven gear is coaxially arranged with the valve core.
The electronic thermostatic valve according to claim 9, further comprising:

A control device, which is electrically connected to the motor, and is used to control the rotation direction and the rotation angle of the motor.
The electronic thermostatic valve according to claim 10, wherein the valve body is provided with a water flow sensor, a first temperature sensor and a second temperature sensor that are electrically connected to the control device, and the water flow sensor is used to detect entering the cold water inlet The first temperature sensor is used to detect the temperature of the cold water entering the cold water inlet, and the second temperature sensor is used to detect the temperature of the mixed water flowing out of the mixed water outlet.
The electronic thermostatic valve according to any one of claims 1 to 8, wherein the valve body is provided with a cold water input connector, a hot water input connector, a cold water output connector, and a mixed water output connector; the hot water input connector Connected with the hot water inlet, the mixed water output joint is communicated with the mixed water outlet; the inside of the valve body is provided with a first cold water flow path and a second cold water flow path, the cold water input joint is connected to the The cold water inlet is communicated through a first cold water flow path, and the cold water output joint is communicated with the cold water input joint through a second cold water flow path.
The electronic thermostatic valve according to any one of claims 1 to 8, wherein the valve core is provided with a limiting rib extending radially outward, and the outer surface of the valve body is provided with a limiting protrusion , The limiting rib cooperates with the limiting protrusion stopper to limit the maximum rotation angle of the valve core.
The electronic thermostatic valve according to any one of claims 1 to 8, wherein the material of the valve core is copper.
A water heater, characterized by comprising the electronic thermostatic valve according to any one of claims 1-14.