CN113464683B - Thermostatic valve assembly and water heater - Google Patents
Thermostatic valve assembly and water heater Download PDFInfo
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- CN113464683B CN113464683B CN202110908878.5A CN202110908878A CN113464683B CN 113464683 B CN113464683 B CN 113464683B CN 202110908878 A CN202110908878 A CN 202110908878A CN 113464683 B CN113464683 B CN 113464683B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Multiple-Way Valves (AREA)
Abstract
The application relates to the technical field of water heaters, and discloses a thermostatic valve assembly and a water heater. The constant-temperature valve assembly comprises a constant-temperature water mixing valve and a motor, and the constant-temperature water mixing valve comprises a valve body and a valve core; the motor drives the valve core to act in the valve body so as to adjust the communication areas of the cold water cavity and the hot water cavity with the water mixing cavity respectively; the valve body is provided with a mounting seat, the mounting seat is provided with a limit switch, and the motor is arranged on the mounting seat; the pivot of the output shaft of motor can rotationally set up on the mount pad, is provided with the trigger piece in the pivot, and the trigger piece can be along with pivot synchronous rotation to trigger limit switch's position for limit switch is triggered in order to send the rotation angle of recognizing the motor and be the signal of initial zero position, with more accurate regulation cold and hot water inflow, thereby constantly output hot water, and constant temperature precision is high, and it is fast to adjust temperature, lets the user obtain better shower experience.
Description
The application relates to a divisional application of a Chinese patent application with the application date of 2019, 6, 11, the application number of 201910502000.4 and the name of a water heater.
The application claims priority from patent application with application number 201810597349.6, named constant temperature water mixing valve and water heater, with application number 2018, 6, 11.
The application claims priority from patent application with application number 201810619424.4, named constant temperature water mixing valve and water heater, with application number 2018, 6, 11.
Technical Field
The application relates to the technical field of water heaters, in particular to a water heater.
Background
The existing consumers pay more attention to the quality of life, and the comfort level of the bath domestic water is unstable, and the bath experience of the consumers is affected by the excessive scalding of the water. At present, domestic water heaters are provided with a water mixing valve, such as a manual water mixing valve or a mechanical constant temperature valve, and the valve core can adjust the supply quantity of hot water and cold water so that the hot water and the cold water are mixed for consumers to use.
However, the manual water mixing valve or the mechanical thermostatic valve used in the current water heater has the following disadvantages:
the manual water mixing valve is characterized in that the opening of the cold water and the hot water is manually controlled through a handle, so that the mixed water outlet temperature reaches the water temperature required by a consumer, but the disadvantage is that the cold water and the hot water are directly mixed at a water outlet, the manual water mixing valve is not easy to control, the overshoot water temperature is easy to cause and the scalding is easy to cause, and meanwhile, the water outlet temperature of the water heater is gradually reduced, so that the water outlet temperature needs to be manually adjusted frequently;
the mechanical thermostatic valve has temperature sensing valve core inside, and through temperature change, valve core push rod expands and contracts automatically, stroke displacement drives valve core to displace, and the ratio of cold water to hot water is controlled.
Disclosure of Invention
The application aims to provide a water heater, which can enable a user to freely set constant-temperature water outlet temperature, can constantly output hot water according to a temperature value set by the user, and has high constant-temperature precision and high temperature regulation speed, so that the user can obtain better bath experience.
In order to achieve the above object, the present application provides a thermostatic valve assembly including:
the constant-temperature water mixing valve comprises a valve body and a valve core connected with the motor, wherein a cold water cavity with a cold water inlet and a cold water outlet, a hot water cavity with a hot water inlet and a water mixing cavity with a constant-temperature water outlet are formed in the valve body;
the motor drives the valve core to act in the valve body so as to adjust the communication areas of the cold water cavity and the hot water cavity with the water mixing cavity respectively;
the valve body is provided with a mounting seat, the mounting seat is provided with a limit switch, and the motor is arranged on the mounting seat;
the rotary shaft of the output shaft of the motor can be rotatably arranged on the mounting seat, and a trigger piece is arranged on the rotary shaft, wherein the trigger piece can synchronously rotate to a position for triggering the limit switch along with the rotary shaft, so that the limit switch is triggered to send a signal for identifying the rotation angle of the motor as an initial zero position.
In some embodiments, the shaft includes a mounting shaft section and a threaded mating shaft section on each axial side of the mounting shaft section and a trigger mating shaft section for connection to an output shaft of the motor.
In some embodiments, the trigger is sleeved on the trigger mating shaft section.
In some embodiments, the mount comprises a receiving cavity, wherein the spindle is disposed through the receiving cavity, and the trigger is located within the receiving cavity.
In some embodiments, the mounting base further comprises a containing groove communicated with the containing cavity, and the limit switch is located in the containing groove, so that the trigger piece and the limit switch do not protrude out of the axial end face of the mounting base in the axial direction of the rotating shaft.
In some embodiments, the trigger is a radial lever disposed on the shaft.
In some embodiments, the trigger member is mounted on the trigger member mating shaft section of the rotating shaft, and the trigger member and the trigger key mating shaft section are cooperatively connected by a key slot structure therebetween.
The application also provides a water heater, which comprises the thermostatic valve assembly and further comprises:
the water heater comprises a water heater body, a water heater and a power supply board, wherein the water heater body comprises a shell, an inner container arranged in the shell, a heater extending into the inner container and a power supply board connected with the heater, and the inner container is provided with a cold water interface and a hot water interface;
a mounting box disposed on the housing;
the control unit is arranged on the mounting box and comprises a temperature adjusting key;
the thermostatic valve assembly is arranged in the installation box, and the motor is connected with the power panel and the control unit.
In some embodiments, the cold water outlet is connected to the cold water interface and the hot water inlet is connected to the hot water interface;
the control unit can control the motor to drive the valve core to act in the valve body according to a temperature value set by a user through the temperature adjusting key so as to adjust the communication areas of the cold water cavity and the hot water cavity and the water mixing cavity respectively.
In some embodiments, the water heater further includes a cold water sensor for detecting the cold water temperature, a hot water sensor for detecting the hot water temperature, and a water mixing sensor for detecting the water mixing temperature, wherein the cold water sensor, the hot water sensor, and the water mixing sensor are connected with the control unit, and the control unit can drive the valve core to act according to detection signals of the cold water sensor, the hot water sensor, and the water mixing sensor so as to adjust communication areas of the cold water cavity and the hot water cavity with the water mixing cavity, respectively.
Through the technical scheme, when the shower bath control device is used, a user can adjust the required temperature through the temperature adjusting key, the control unit can control the motor to drive the valve core to move in the valve body according to the set temperature of the user so as to adjust the communication areas of the cold water cavity and the hot water cavity with the water mixing cavity respectively, so as to adjust the cold water inflow amount of the cold water and the hot water, to provide mixed water after being mixed in the water mixing cavity, and then, the control unit can drive the valve core to move according to the detection signals of the cold water sensor, the hot water sensor and the mixed water sensor so as to further adjust the communication areas of the cold water cavity and the hot water cavity with the water mixing cavity respectively, so that the cold water inflow amount of the cold water and the hot water are adjusted more accurately, hot water is output constantly, the constant temperature accuracy is high, the temperature adjusting speed is high, and the user can obtain better shower experience.
Additional features and advantages of the application will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification, illustrate the application and together with the description serve to explain, without limitation, the application. In the drawings:
FIG. 1 is a schematic cross-sectional view of a thermostatic mixing valve according to an embodiment of the present application;
FIG. 2 is a schematic view of a partial enlarged structure in FIG. 1;
FIG. 3 is a perspective view of one view of the cartridge sleeve of FIG. 1;
FIG. 4 is a perspective view of another view of the spool piece of FIG. 3;
FIG. 5 is a perspective view of a portion of the valve spindle of FIG. 1 from one perspective;
FIG. 6 is a perspective view of another view of a partial structure of the valve spindle of FIG. 5;
FIG. 7 is an exploded view of a water heater according to an embodiment of the present application;
FIG. 8 is an exploded view of a partial structure of a thermostatic mixing valve according to an embodiment of the present application;
FIG. 9 is a schematic view of the partial enlarged structure of FIG. 8;
FIG. 10 is an end view schematic of a partial structure of the thermostatic mixing valve of FIG. 8, wherein the motor is not shown;
fig. 11 is a schematic sectional view of a part of a thermostatic mixing valve according to an embodiment of the present application.
Description of the reference numerals
The water supply device comprises a valve body, a 2-valve core, a 3-cold water cavity, a 4-hot water cavity, a 5-constant temperature water outlet, a 6-cold water inlet, a 7-cold water outlet, a 8-hot water inlet, a 9-water mixing cavity, a 10-valve core sleeve, a 11-valve core shaft, a 12-sleeve water guide, a 13-sleeve cold water guide, a 14-sleeve hot water guide, a 15-shaft cold water guide, a 16-shaft hot water guide, a 17-shaft water guide, a 18-sleeve-shaped water guide, a 19-shaft annular water guide, a 20-inflow port, a 21-front seat body, a 22-outflow port, a 23-rear seat body, a 24-spring, a 25-check post, a 26-conical surface, a 27-elastic sealing ring, a 28-motor, a 29-shell, a 30-inner container, a 31-heater, a 32-power source plate, a 33-mounting box, a 34-control mounting seat, a 36-limit switch, a 37-rotating shaft, a 38-trigger piece, a 39-maintenance cover, a 40-side end cover, a 41-containing cavity, a 42-containing groove, a 43-thread fit shaft section, a 44-fit shaft section, a 45-fit trigger shaft section, a 45-fit shaft section, a 46-fit profile outer gear section, a 46-constant temperature sensor section, a 46-outer gear section, a water outlet section and a 50-fit-outer diameter section, a constant temperature sensor section, a water supply device, and a main body, a main parts, and a main parts.
Detailed Description
The following describes specific embodiments of the present application in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the application, are not intended to limit the application.
Referring to the structure shown in fig. 7, the water heater provided by the application comprises a water heater body, a mounting box 33, a control unit 34, a constant temperature water mixing valve and a motor 28, wherein the water heater body comprises a shell 29, a liner 30 arranged in the shell 29, a heater 31 extending into the liner 30, and a power panel 32 connected with the heater 31, and the liner is provided with a cold water interface and a hot water interface; the mounting box 33 is provided on the housing 29; the control unit 34 is arranged on the mounting box 33 and comprises temperature adjusting keys, and further, the control unit 34 can also comprise other keys, such as a start key, a close key, a heat preservation key and the like; the constant temperature water mixing valve and the motor 28 are arranged in the mounting box 33, the motor 28 is connected with the power panel 32 and the control unit 34, the constant temperature water mixing valve comprises a valve body 1 and a valve core 2 connected with the motor 28, a cold water cavity 3 with a cold water inlet 6 and a cold water outlet 7, a hot water cavity 4 with a hot water inlet 8, a water mixing cavity 9 with a constant temperature water outlet 5, a cold water sensor arranged in the cold water cavity 3, a hot water sensor arranged in the hot water cavity 4 and a water mixing sensor for detecting the temperature of mixed water are formed in the valve body 1; the cold water outlet 7 is connected with a cold water interface, and the hot water inlet 8 is connected with a hot water interface; the cold water sensor, the hot water sensor and the mixed water sensor are connected with the control unit 34; the control unit 34 can control the motor 28 to drive the valve core 2 to move in the valve body 1 according to a temperature value set by a temperature adjusting key by a user so as to adjust communication areas of the cold water cavity 3 and the hot water cavity 4 with the water mixing cavity 9 respectively, and can drive the valve core 2 to move according to detection signals of the cold water sensor, the hot water sensor and the water mixing sensor so as to adjust communication areas of the cold water cavity 3 and the hot water cavity 4 with the water mixing cavity 9 respectively.
When the water heater is used, a user can adjust the water heater to a required temperature through the temperature adjusting key, the control unit can control the motor to drive the valve core to move in the valve body according to the set temperature of the user so as to adjust the communication areas of the cold water cavity and the hot water cavity and the water mixing cavity respectively, so as to adjust the cold water inflow amount and the hot water inflow amount, to provide mixed water after mixing in the water mixing cavity, then, the control unit can drive the valve core to move according to the detection signals of the cold water sensor, the hot water sensor and the mixed water sensor so as to further adjust the communication areas of the cold water cavity and the hot water cavity and the water mixing cavity respectively, so that the cold water inflow amount and the hot water inflow amount are adjusted more accurately, the constant temperature accuracy is high, the temperature adjusting speed is high, and the user can obtain better bath experience.
In addition, because the constant temperature water mixing valve and the motor 28 are arranged in the mounting box 33, the constant temperature water mixing valve and the motor can be manufactured in a miniaturized manner, and the water heater is prevented from occupying a large space after being arranged in the mounting box 33, so that the structure of the water heater is small in size, the water heater can have a better appearance proportion, and a user can install the water heater to obtain better household space utilization.
In addition, in one embodiment, the housing 29 may include a housing body and side covers 40 disposed at both sides in the axial direction, wherein one side cover 40 is externally provided with a service cover 39, and the power panel 32 may be disposed between the service cover 39 and the side cover 40 for facilitating subsequent maintenance.
The control unit 34 may include a liquid crystal display and the temperature adjustment key may be an icon on the liquid crystal display.
In addition, the water mixing cavity 9 may be formed between the valve core 2 and the valve body 1, or the water mixing cavity 9 is formed in the valve core 2, as shown in fig. 1, since the water mixing cavity 9 is formed in the valve core 2, and the water mixing cavity 9 is kept in communication with the constant temperature water outlet 5 during the rotation or axial movement (as shown in fig. 11) of the valve core 2, for example, when the valve core 2 rotates to adjust the communication areas of the cold water cavity 3 and the hot water cavity 4 with the water mixing cavity 9 respectively, the cold water and the hot water entering the water mixing cavity 9 are correspondingly adjusted, so that the cold water and the hot water are fully mixed in the water mixing cavity 9 in advance, and then flow out from the constant temperature water outlet 5, thereby providing water with proper temperature for consumers, such as meeting the bath requirements of comfort of consumers.
Of course, the water mixing cavity 9 can be directly communicated with the constant temperature water outlet 5 through the opening on the cavity wall, so that the mixed water with proper temperature in the water mixing cavity 9 can quickly and directly flow out of the constant temperature water outlet 5. Or, in order to further enhance the effect of mixing cold and hot water and provide water with a more appropriate temperature, preferably, in the constant temperature water mixing valve provided by the application, a water mixing channel is arranged between the water mixing cavity 9 and the constant temperature water outlet 5. Therefore, the cold and hot mixed water in the water mixing cavity 9 flows out of the constant temperature water outlet 5 after flowing through the water mixing channel, and the cold and hot water is further mixed in the flowing process in the water mixing channel, so that the cold and hot water mixing effect is improved.
Of course, it should be understood that the mixing channel may take a variety of forms, such as various types of water tanks that may be curved or straight. Alternatively, a collar-shaped water guide groove 19 and a collar-shaped water guide groove 18 as shown in fig. 1 (which will be described in detail later).
In addition, the valve body 1 may form the cold water chamber 3 and the hot water chamber 4 by its own internal structure, and the valve core 2 may be assembled in the valve body 1 only. Alternatively, in order to simplify the structure, the self structure of the valve core 2 is fully utilized, and preferably, as shown in fig. 1, the valve core 2 divides the inner space of the valve body 1 into a cold water cavity 3 and a hot water cavity 4, for example, the valve body 1 may be formed into a cylindrical structure, and the valve core 2 may be sealingly and rotatably disposed in the valve body 1, so that the cold water cavity 3 and the hot water cavity 4 are respectively formed at both ends inside the valve body 1.
It should be noted that, of course, the communication between the cold water chamber 3 and the hot water chamber 4 and the water mixing chamber 9 may be implemented in various forms, for example, in one form, the valve core 2 may be a cylinder, the outer surface of the cylinder is formed with a hot water tank and a cold water tank which are communicated with the water mixing chamber 9, and when the valve core 2 rotates, the communication opening area of the hot water tank and the hot water chamber and the communication opening area of the cold water tank and the cold water chamber may be adjusted accordingly.
Alternatively, in another form, as shown in fig. 1, the valve core 2 comprises a valve core sleeve 10 and a valve core shaft 11, wherein the valve core sleeve 10 is fixedly arranged in the valve body 1 in a sealing way and divides the inner space of the valve body 1 into a cold water cavity 3 and a hot water cavity 4, for example, as shown in fig. 3 and 4, two sealing grooves on the valve core sleeve 10 are internally provided with sealing rings, the sealing rings can be in sealing contact with the inner surface in the valve body 1, and a sleeve water guide port 12 communicated with the constant-temperature water outlet 5, a sleeve cold water port 13 communicated with the cold water cavity 3 and a sleeve hot water port 14 communicated with the hot water cavity 4 are formed on the wall of the valve core sleeve 10; the shaft section of the valve core shaft 11 extending into the valve core sleeve 10 is hermetically arranged and internally forms a water mixing cavity 2, for example, as shown in fig. 5 and 6, sealing rings are arranged in two sealing grooves on the valve core shaft, the sealing rings can be in sealing contact with the inner surface of the valve core sleeve 10, and a shaft cold water port 15, a shaft hot water port 16 and a shaft water guide port 17 are formed on the cavity wall of the water mixing cavity 9; wherein, as shown in fig. 1, the valve core shaft 11 can rotate to adjust the communication area between the sleeve cold water port 13 and the shaft cold water port 15 (the overlapping area of the sleeve cold water port 13 and the shaft cold water port 15) and the communication area between the sleeve hot water port 14 and the shaft hot water port 16 (the overlapping area of the sleeve hot water port 14 and the shaft hot water port 16), so as to correspondingly adjust the communication areas of the cold water cavity 3 and the hot water cavity 4 and the water mixing cavity 9 respectively, for example, in a reverse direction; and the water mixing cavity 9 is communicated with the constant temperature water outlet 5 through the shaft water guide port 17 and the sleeve water guide port 12. The motor drives the valve core shaft to rotate, so that the water inflow of cold water and hot water is adjusted.
Of course, the sleeve cold water port 13 and the sleeve hot water port 14 may be formed at any suitable positions, for example, may be formed on the end cover side wall of the valve core sleeve, and accordingly, the shaft cold water port 15 and the shaft hot water port 16 are formed on the end cover side wall corresponding to the water mixing chamber of the valve core shaft.
Alternatively, as shown in fig. 3 and 4, the sleeve cold water port 13 and the sleeve hot water port 14 are formed on the axial side wall of the valve core sleeve 10, a collar-shaped water guide groove 18 is formed on the outer surface of the valve core sleeve 10 between the sleeve cold water port 13 and the sleeve hot water port 14, the collar-shaped water guide groove 18 is communicated with the constant temperature water outlet 5, and the sleeve water guide port 12 is formed on the groove bottom of the collar-shaped water guide groove 18; as shown in fig. 5 and 6, the shaft cold water port 15 and the shaft hot water port 16 are formed on the axial cavity wall of the water mixing cavity 9, a shaft-shaped water guide groove 19 is formed on the outer surface of the spool shaft 11 between the shaft cold water port 15 and the shaft hot water port 16, and the shaft water guide port 17 is formed on the groove bottom of the shaft-shaped water guide groove 19; the shaft annular water guide groove 19 and the collar-shaped water guide groove 18 form a water mixing passage. Thus, when the valve core shaft rotates, cold and hot water with different quantities can firstly enter the water mixing cavity 9, then enter the collar-shaped water guide groove 19 through the shaft water guide port 17, then enter the collar-shaped water guide groove 18 through the sleeve water guide port 12, and finally flow out of the constant temperature water outlet 5. Thus, the cold and hot mixed water in the water mixing chamber 9 can further enhance the cold and hot mixing effect by the bent collar-shaped water guide groove 19 and the collar-shaped water guide groove 18.
In addition, the shaft water guide port 17 and the sleeve water guide port 12 are arranged in a staggered manner in the circumferential direction, and the sleeve water guide port 12 and the constant-temperature water outlet 5 are arranged in a staggered manner in the circumferential direction. For example, the valve core sleeve 10 is arranged relatively in the diameter direction, so that the water mixing path is prolonged, the water mixing is convenient to uniformly flow to the sleeve water guide 12 from the two circumferential sides of the shaft water guide 17 and further mix while flowing, and then uniformly flow to the constant temperature water outlet 5 from the two circumferential sides of the sleeve water guide 12 and further mix while flowing.
In addition, as shown in fig. 11, the constant temperature water outlet 5 is connected with a constant temperature water outlet pipe section 50, and a water mixing sensor 51 is arranged at a position far away from the constant temperature water outlet 5 in the constant temperature water outlet pipe section. Like this, owing to mix water sensor and arrange in the constant temperature outlet pipe section in the position department of keeping away from constant temperature delivery port, like this, the mixed water that flows from constant temperature delivery port can further mix in the constant temperature outlet pipe section, then is detected real-time temperature after passing through mixing water sensor to the control unit can in time be according to the mixed water temperature of detecting and adjust cold and hot water inflow, like this, mix cold and hot water a plurality of times, thereby promote the mixing effect of cold and hot water fully.
In addition, as shown in fig. 8 and 9 and fig. 10, the valve body 1 is provided with a mounting seat 35, a limit switch 36 is provided on the mounting seat 35, the motor 28 is provided on the mounting seat 35, a rotating shaft 37 connected with an output shaft of the motor 28 is rotatably provided on the mounting seat 35, and a trigger piece 38 is provided on the rotating shaft 37, wherein the trigger piece 38 can synchronously rotate to a position for triggering the limit switch 36 along with the rotating shaft 37, so that the limit switch 36 is triggered to send a signal for identifying the rotation angle of the motor 28 as an initial zero position to the control unit.
Because the rotating shaft 37 can be rotatably arranged on the mounting seat 35, the trigger piece 38 is arranged on the rotating shaft 37, and the rotating shaft 37 can synchronously drive the trigger piece 38 to rotate to the position of the trigger limit switch 36, so that when the trigger device is in actual use, the rotating shaft 37 is in power transmission connection with the output shaft of the motor 28, the motor 28 starts to drive the rotating shaft 37 to rotate until the trigger piece 38 triggers the limit switch 36, for example, the trigger rod 49 is triggered, so that the limit switch 36 sends a signal for identifying the rotation angle of the motor 28 as an initial zero position to the control unit, that is, the control unit can identify the rotation angle of the motor 28 to be at the initial zero position at this moment, for example, after the trigger piece is applied to the water mixing valve, the rotating shaft 37 is connected with the valve core 2 of the water mixing valve to drive the valve 2 to act to adjust the water quantity of the water mixing cavity 9, so as to adjust the hot water and cold water of the mixing water cavity 8, and the water of the water mixing valve 9, when the control unit identifies the rotation angle of the motor 28 to be at the initial zero position (when the initial zero position is started, the control unit identifies the water temperature is full-through the hot water inlet 8 and the mixing water cavity 9, and the water mixing water cavity 9 is fully communicated with the water inlet 6 and the water mixing valve 6 is fully or the water inlet 6 is in the initial zero position, or the water mixing valve is in the water cavity is in the water mixing valve 9 and the water mixing valve 9 is in the water mixing cavity 9 and the water mixing cavity 9 has the water mixing water cavity 9 and the water temperature has the water temperature and the water mixing valve 9 and the water temperature has the water temperature. Therefore, the triggering device can accurately reset the rotation angle of the motor 28, ensure the consistency of the running position of the motor 28 each time and the accuracy of the incremental control of angle adjustment, avoid the rotation angle reset of the motor by adopting the motor locked-rotor mode in the prior art, and prolong the service life of the motor.
The trigger 38 and the limit switch 36 may be disposed at any position of the mounting base 35 in any manner, as long as the rotation shaft 37 drives the trigger 38 to rotate to trigger the limit switch 36. In one embodiment, to fully mount the self-structure of the mount 35 and reduce the space occupation of the trigger device, the mount 35 includes a receiving cavity 41 and a receiving groove 42 in communication with the receiving cavity 41, wherein the shaft 37 is disposed through the receiving cavity 41, the trigger 38 is located within the receiving cavity 41, and the limit switch 36 is located within the receiving groove 42. In this way, by virtue of the accommodation action of the accommodation chamber 41 and the accommodation groove 42, the trigger piece 38 and the limit switch 36 do not protrude from the axial end face of the mount 35 in the axial direction of the rotating shaft 37, thereby facilitating the mounting of the motor 28 on the axial end face of the mount 35.
In addition, the triggering element 38 may have various structures, for example, the triggering element 38 may be a radial shift lever disposed on the rotating shaft 37, and the radial shift lever may shift the triggering shift head of the limit switch 36 to make the triggering shift head act to trigger. Alternatively, the trigger member 38 is a cam, and the maximum outer profile portion 48 of the cam is capable of triggering the limit switch 36, such that the gradually expanding outer profile surface of the cam can be utilized to gradually and smoothly apply the triggering force to the limit switch 36 to trigger the limit switch 36.
In addition, the limit switch 36 may be a normally closed switch, for example, after being electrified in use, the limit switch 36 may be a normally closed switch in an electrified state, after being triggered by the trigger piece 38, the limit switch 36 is powered off, the control unit determines that the rotation angle of the motor is an initial zero position after receiving a signal of the normally closed switch, or the limit switch 36 is a normally open switch, and when the normally open switch is triggered, the control unit closes to send a closing signal, and determines that the rotation angle of the motor is the initial zero position according to the closing signal.
Of course, the limit switch 36 may be another limit trigger and may be detected by a sensor, for example, the trigger 38 may enable the trigger rod of the limit switch 36 to extend, and after the sensor detects the extending state of the trigger rod, a detection signal is sent to the control unit, and the control unit determines that the rotation angle of the motor is the initial zero position according to the detection signal.
In addition, the shaft 37 may have various structures, for example, as shown in fig. 9, in one embodiment of the shaft 37, the shaft 37 includes a fitting shaft section 44, and screw-fitting shaft sections 43 located on both axial sides of the fitting shaft section 44, respectively, and a trigger piece-fitting shaft section 45 for connection with the output shaft of the motor 28, wherein the trigger piece 38 is sleeved on the trigger piece-fitting shaft section 45. The mounting shaft section 44 may be fitted with a mounting hole on the mounting seat 35, or the mounting shaft section 44 may be fitted with a mounting hole on the valve body 1, or the mounting shaft section 44 may be fitted with a mounting hole on the mounting seat 35 and a mounting hole on the valve body 1 at the same time. The threaded matching shaft section 43 can be in threaded connection with the valve core shaft 11, so that the motor can drive the rotating shaft 37 to rotate, the rotating shaft 37 can drive the valve core shaft 11 to rotate or the valve core shaft 11 moves in the axial direction of the rotating shaft 37 (at this time, the rotation limiting structure in the valve body converts the rotation of the valve core shaft 11 into axial movement), and therefore the communication areas of the hot water inlet 8 and the cold water inlet 6 of the water mixing valve and the water mixing cavity 9 are adjusted to adjust the water quantity of the hot water and the cold water entering the water mixing cavity 9, and the water temperature is adjusted. The trigger piece matching shaft section 45 may be connected to the output shaft of the motor by any connection method, for example, a bar hole or a polygonal hole is formed on the axial end surface of the trigger piece matching shaft section 45, and the front end of the output shaft of the motor is matched with the bar hole or the polygonal hole in a shape-fit manner, so that the motor can drive the rotating shaft 37 to rotate when rotating, thereby driving the trigger piece 38 to rotate.
Of course, the trigger piece 38 may be fit over the trigger piece mating shaft section 45 in a variety of ways, for example, the trigger piece 38 and the trigger piece mating shaft section 45 may be matingly coupled by a keyway therebetween. Alternatively, as shown in fig. 9, the trigger piece engaging shaft section 45 has an outer fitting tooth 46 formed on an outer peripheral surface thereof, and the trigger piece 38 includes a fitting hole having an inner peripheral surface formed with an inner fitting tooth 47 engaged with the outer fitting tooth 46. The mating arrangement of the external and internal teeth 46, 47 ensures that the trigger member 38, such as a cam, does not loosen after assembly, and allows for more precise installation of the trigger member 38, such as a cam, through small angles of the serrations.
In addition, in actual use, the water pressure of the hot and cold water may vary, for example, in the case where the valve core 2 simultaneously communicates the cold water chamber and the hot water chamber with the mixing chamber, if the cold water pressure is too high, cold water may be caused to enter the hot water chamber through the mixing chamber, thereby flowing hot water reversely, which may cause a large amount of cold water to flow out from the constant temperature water outlet 5 to affect the user's sense of well use, and thus, further, as shown in fig. 1 and 2, a one-way check device allowing hot water to flow into the mixing chamber 9 is provided in the hot water flow passage between the hot water inlet 8 and the mixing chamber 9. In this way, the one-way check means may allow only hot water to pass through and into the mixing chamber, while cold water may be avoided from forcing the hot water back from the hot water inlet 8.
Of course, the one-way check means may be provided at any suitable location, for example, it may be provided at the shaft hot water port 16, or, as shown in fig. 1 and 2, the one-way check means may be provided within the hot water chamber 4. In this way, the inner space of the hot water chamber 4 can be fully utilized to conveniently install the one-way check device.
Further, the one-way check device may be axially positioned by its positioning structure, or, as shown in fig. 1, the one-way check device may be axially limited by the valve core 2, for example, an end of the one-way check device may abut against an end face of the valve core 2, while the rotation of the valve core 2 is not affected.
Of course, the one-way check device may take various forms, such as one form, as shown in fig. 1 and 2, including a front housing 21 having an inflow port 20, a rear housing 23 having an outflow port 22, a spring 24, and a check post 25, wherein the front housing 21 and the rear housing 23 are fixedly coupled and disposed within the hot water chamber 4, the check post 25 is slidably disposed between the front housing 21 and the rear housing 23, and the spring 24 is coupled between the check post 25 and the rear housing 23; the check column 25 can block or open the inflow port 20. Thus, under the pressure of the hot water, the hot water lifts the check post 25 to open the inflow port 20, allowing the hot water to enter the mixing chamber through the shaft hot water port 16, and if the pressure of the hot water is insufficient to lift the check post 25, a suitable pressurizing means may be provided at the hot water inlet 8 to increase the pressure of the hot water. When the pressure of the cold water is too high, the check column 25 can block the inflow port 20 to prevent the cold water from passing through.
Further, as shown in fig. 2, in order to facilitate the blocking or opening of the inflow port 20 by the check post 25, it is preferable that the inner circumferential surface of the inflow port 20 is formed as a tapered surface 26 that is enlarged toward the rear seat 23, and an elastic seal ring 27 that can be in contact with the tapered surface 26 is provided on the outer circumferential surface of the check post 25. Thus, when the check post 25 seals the flow inlet 20, the resilient sealing ring 27 is in a gradual contact seal with the tapered surface 26, which also facilitates the resilient sealing ring 27 moving away from the tapered surface 26 to open the flow inlet 20.
Alternatively, in another form of the one-way check device, the one-way check device is an elastic valve plate, wherein the elastic valve plate is fixedly connected to the inner surface of the hot water chamber 4 to cover the hot water inlet 8 and can be turned towards the inside of the hot water chamber 4 under the action of hot water to open the hot water inlet 8. For example, the elastic valve plate can be a high temperature resistant silica gel sheet.
The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the application are not described in detail in order to avoid unnecessary repetition.
Moreover, any combination of the various embodiments of the application can be made without departing from the spirit of the application, which should also be considered as disclosed herein.
Claims (4)
1. A thermostatic valve assembly, comprising:
the constant-temperature water mixing valve comprises a valve body (1) and a valve core (2) connected with the motor (28), wherein a cold water cavity (3) with a cold water inlet (6) and a cold water outlet (7), a hot water cavity (4) with a hot water inlet (8) and a water mixing cavity (9) with a constant-temperature water outlet (5) are formed in the valve body (1);
the motor (28) drives the valve core (2) to act in the valve body (1) so as to adjust the communication areas of the cold water cavity (3) and the hot water cavity (4) with the water mixing cavity (9) respectively;
a mounting seat (35) is arranged on the valve body (1), a limit switch (36) is arranged on the mounting seat (35), and the motor (28) is arranged on the mounting seat (35);
a rotating shaft (37) connected with an output shaft of the motor (28) can be rotatably arranged on the mounting seat (35), a trigger piece (38) is arranged on the rotating shaft (37), wherein the trigger piece (38) can synchronously rotate to a position for triggering the limit switch (36) along with the rotating shaft (37), so that the limit switch (36) is triggered to send a signal for identifying the rotation angle of the motor (28) as an initial zero position;
the mounting seat (35) comprises a containing cavity (41), wherein the rotating shaft (37) passes through the containing cavity (41), and the trigger piece (38) is positioned in the containing cavity (41);
the mounting seat (35) further comprises a containing groove (42) communicated with the containing cavity (41), the limit switch (36) is positioned in the containing groove (42), and the trigger piece (38) and the limit switch (36) do not protrude out of the axial end face of the mounting seat (35) in the axial direction of the rotating shaft (37);
the rotating shaft (37) comprises an assembly shaft section (44) and a thread matching shaft section (43) and a triggering piece matching shaft section (45) which are respectively positioned at two axial sides of the assembly shaft section (44), wherein the triggering piece matching shaft section (45) is connected with an output shaft of the motor (28), an outer assembly tooth (46) is arranged on the outer peripheral surface of the triggering piece matching shaft section (45), an assembly hole is formed in the inner peripheral surface of the assembly hole, an inner assembly tooth (47) matched with the outer assembly tooth (46) is formed in the inner peripheral surface of the assembly hole, and the triggering piece (38) is sleeved on the outer assembly tooth (46) and can synchronously rotate along with the rotating shaft (37) to the position for triggering the limit switch (36).
2. A water heater comprising the thermostatic valve assembly of claim 1, further comprising:
the water heater comprises a water heater body, wherein the water heater body comprises a shell (29), a liner (30) arranged in the shell (29), a heater (31) extending into the liner (30) and a power panel (32) connected with the heater (31), and the liner is provided with a cold water interface and a hot water interface;
-a mounting box (33), said mounting box (33) being provided on said housing (29);
-a control unit (34), said control unit (34) being arranged on said mounting box (33) and comprising a temperature adjustment key;
the thermostatic valve assembly is arranged in the installation box, and the motor (28) is connected with the power panel and the control unit (34).
3. A water heater as claimed in claim 2, wherein,
the cold water outlet (7) is connected with the cold water interface, and the hot water inlet (8) is connected with the hot water interface;
the control unit (34) can control the motor (28) to drive the valve core (2) to act in the valve body (1) according to a temperature value set by a temperature adjusting key so as to adjust the communication areas of the cold water cavity (3) and the hot water cavity (4) and the water mixing cavity (9) respectively.
4. A water heater according to claim 3, further comprising a cold water sensor for detecting cold water temperature, a hot water sensor for detecting hot water temperature, and a water mixing sensor for detecting water mixing temperature, wherein the cold water sensor, the hot water sensor and the water mixing sensor are connected with the control unit (34), and the control unit can drive the valve core (2) to act according to detection signals of the cold water sensor, the hot water sensor and the water mixing sensor so as to adjust communication areas of the cold water cavity (3) and the hot water cavity (4) with the water mixing cavity (9) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110908878.5A CN113464683B (en) | 2018-06-11 | 2019-06-11 | Thermostatic valve assembly and water heater |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
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| CN2018106194244 | 2018-06-11 | ||
| CN2018105973496 | 2018-06-11 | ||
| CN201810597349.6A CN108506524A (en) | 2018-06-11 | 2018-06-11 | Constant-temperature water mixing valve and water heater |
| CN201810619424.4A CN108869801A (en) | 2018-06-11 | 2018-06-11 | Constant-temperature water mixing valve and water heater |
| CN201910502000.4A CN110159803B (en) | 2018-06-11 | 2019-06-11 | Water heater |
| CN202110908878.5A CN113464683B (en) | 2018-06-11 | 2019-06-11 | Thermostatic valve assembly and water heater |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910502000.4A Division CN110159803B (en) | 2018-06-11 | 2019-06-11 | Water heater |
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| CN113464683A CN113464683A (en) | 2021-10-01 |
| CN113464683B true CN113464683B (en) | 2023-09-19 |
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| CN201910502000.4A Active CN110159803B (en) | 2018-06-11 | 2019-06-11 | Water heater |
| CN201910501456.9A Pending CN110159802A (en) | 2018-06-11 | 2019-06-11 | Trigger device, water mixing valve component, water mixing valve and water heater |
| CN201910501447.XA Pending CN110159800A (en) | 2018-06-11 | 2019-06-11 | Mixed water jacket, water mixing valve axis, water-mixing valve core, constant-temperature water mixing valve and water heater |
| CN201910501452.0A Pending CN110159801A (en) | 2018-06-11 | 2019-06-11 | On-off stream connector, water mixing valve and water heater |
| CN202110908878.5A Active CN113464683B (en) | 2018-06-11 | 2019-06-11 | Thermostatic valve assembly and water heater |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910502000.4A Active CN110159803B (en) | 2018-06-11 | 2019-06-11 | Water heater |
| CN201910501456.9A Pending CN110159802A (en) | 2018-06-11 | 2019-06-11 | Trigger device, water mixing valve component, water mixing valve and water heater |
| CN201910501447.XA Pending CN110159800A (en) | 2018-06-11 | 2019-06-11 | Mixed water jacket, water mixing valve axis, water-mixing valve core, constant-temperature water mixing valve and water heater |
| CN201910501452.0A Pending CN110159801A (en) | 2018-06-11 | 2019-06-11 | On-off stream connector, water mixing valve and water heater |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113865096A (en) * | 2020-06-30 | 2021-12-31 | 芜湖美的厨卫电器制造有限公司 | Integrated water inlet and outlet device and water heater |
| CN113865097A (en) * | 2020-06-30 | 2021-12-31 | 芜湖美的厨卫电器制造有限公司 | Water inlet and outlet device and water heater |
| CN114200301B (en) * | 2020-09-16 | 2024-04-16 | 芜湖美的厨卫电器制造有限公司 | Motor locked rotor detection method, detection device, water heater and readable storage medium |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110159803B (en) | 2021-08-27 |
| CN110159803A (en) | 2019-08-23 |
| CN113464683A (en) | 2021-10-01 |
| CN110159802A (en) | 2019-08-23 |
| CN110159801A (en) | 2019-08-23 |
| CN110159800A (en) | 2019-08-23 |
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