CN115435138A

CN115435138A - Flow control valve and household appliance

Info

Publication number: CN115435138A
Application number: CN202110629272.8A
Authority: CN
Inventors: 王文奇
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2022-12-06

Abstract

The invention discloses a flow regulating valve and a household appliance, wherein the flow regulating valve comprises a valve body, a first regulating assembly and a second regulating assembly; the valve body comprises a valve seat and a valve rod which is arranged on the valve seat and can rotate in a first angle range; the first adjusting component can drive the valve rod to rotate in a first angle range; the second adjusting component can drive the valve rod to rotate in a first angle range; when the valve rod is driven to rotate in the first angle range through the first adjusting assembly, the second adjusting assembly does not interfere with the valve rod to rotate freely. The flow regulating valve has various regulating modes, and when one of the first regulating component and the second regulating component breaks down, the flow regulating valve can also regulate the flow through the other regulating component, so that the flow regulating valve can still work normally.

Description

Flow control valve and household appliance

Technical Field

The invention relates to the technical field of flow regulation, in particular to a flow regulating valve and a household appliance.

Background

The flow rate of gas and liquid in household appliances such as gas cookers, gas water heaters, electric water heaters, etc. is usually controlled by a flow control valve. The valve rod of the flow regulating valve is regulated through the regulating assembly, so that the valve rod can rotate by a certain angle, the opening degree of the flow regulating valve can be regulated, and the regulation of the flow is realized. In the related art, the adjusting assembly for controlling the rotation of the valve rod is single, so that the flow regulating valve is single in adjusting mode.

Disclosure of Invention

The invention mainly aims to provide a flow regulating valve with various regulating modes.

In order to achieve the above object, the present invention provides a flow control valve, including:

the valve body comprises a valve seat and a valve rod which is arranged on the valve seat and can rotate in a first angle range; a first adjustment assembly capable of driving the valve stem to rotate within the first angular range; and a second adjustment assembly capable of driving the valve stem to rotate within the first angular range;

the second adjustment assembly does not interfere with the valve stem free rotation as the valve stem is rotated within the first angular range by the first adjustment assembly.

In one embodiment, the lower limit value of the first angle range is 0 °, and the upper limit value of the first angle range is greater than 180 ° and equal to or less than 270 °.

In one embodiment, the upper limit of the first angular range is not less than 180 °.

In one embodiment, the first adjustment assembly includes one end of the valve stem;

alternatively, the first adjustment assembly is located in the extending direction of the valve stem and connected to the end of the valve stem.

In one embodiment, the second adjusting assembly comprises a motor arranged on the valve seat, a transmission structure fixedly connected with an output shaft of the motor, a first gear rotatably arranged on the valve seat, and a second gear fixedly connected with the valve rod and capable of being meshed with the first gear;

when the first gear is meshed with the second gear, the transmission structure has a first position and a second position, in the first position, the motor can drive the first gear to rotate freely through the transmission structure, and in the second position, the first adjusting component can drive the first gear to rotate freely through the second gear.

In an embodiment, the transmission structure and the first gear are both disposed through the output shaft, the transmission structure is provided with a first protrusion, the first gear is provided with a second protrusion, in the first position, the first protrusion and the second protrusion contact in the circumferential direction of the output shaft, and in the second position, the first protrusion and the second protrusion are spaced in the circumferential direction of the output shaft.

In one embodiment, when the valve stem is rotated in a first direction and moved from a lower limit position of the first angular range to an upper limit position of the first angular range, the second projection is rotated in a second direction and moved from the lower limit position of the second angular range to an upper limit position of the second angular range, the upper limit of the second angular range being the same as the upper limit of the first angular range;

in the second position, the first protrusion is located within a third angle range, a lower limit value of the third angle range is the same as an upper limit value of the second angle range, the lower limit value of the second angle range is 0 ° in the second direction, and the upper limit value of the third angle range is 360 ° in the second direction.

In one embodiment, the valve further comprises a detection switch arranged on the valve seat;

the transmission structure includes circumference be provided with a plurality of trigger parts transmission structure pivoted in-process, it is a plurality of trigger part can intermittent trigger detection switch.

In one embodiment, the plurality of trigger parts are arranged at equal intervals; and/or

The distance between two adjacent triggering parts is larger than the distance between two adjacent tooth teeth of the first gear.

In one embodiment, the valve further comprises an activation switch arranged on the valve seat, wherein in a flow closing gear position of the valve rod, the valve rod can move along the length direction of the valve rod to have a closing position and an opening position, in the closing position, the second gear and the first gear are spaced in the length direction of the valve rod, in the opening position, the second gear is meshed with the first gear, and the valve rod triggers the activation switch; and/or

Still including locating change over switch on the disk seat, change over switch with the motor electricity is connected, the valve rod has the flow and closes the preset flow gear behind the gear and the rotatory predetermined angle, the valve rod is rotatory extremely when presetting the flow gear, the valve rod triggers change over switch, with control motor drive transmission structure rotates.

The invention further provides a gas stove which comprises the flow regulating valve, and the valve body is a ball valve or a plug valve.

In above-mentioned flow control valve, set up first regulating assembly and second regulating assembly simultaneously, first regulating assembly and second regulating assembly homoenergetic drive valve rod at first angle within range internal rotation, and when driving the valve rod at first angle within range internal rotation through first regulating assembly, the second regulating assembly does not interfere the valve rod and freely rotates. Therefore, the flow regulating valve can drive the valve rod to rotate within the first angle range through the first regulating assembly and can drive the valve rod to rotate within the first angle range through the second regulating assembly, and the regulating mode of the flow regulating valve is diversified. And when one of the first regulating assembly and the second regulating assembly breaks down, the other one can be used for regulating the flow, so that the flow regulating valve can still work normally.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a flow control valve according to an embodiment of the present invention;

FIG. 2 is a partially exploded view of the flow control valve shown in FIG. 1;

FIG. 3 is a partially exploded view of the flow control valve shown in FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4;

FIG. 6 is a schematic view of the structure of FIG. 4 from another perspective;

FIG. 7 is a schematic structural diagram of the first bump and the second bump shown in FIG. 4 in an initial state;

fig. 8 is a schematic structural view of the second protrusion in fig. 7 driven by the first protrusion to rotate clockwise by 270 °;

FIG. 9 is a schematic perspective view of the valve stem of FIG. 1 with the activation switch and the diverter switch;

fig. 10 is a perspective view of fig. 9 from another perspective.

The reference numbers indicate:

reference numerals	Name(s)	Reference numerals	Name (R)
				10	Flow regulating valve	200	Valve seat
300	Valve rod	400	First adjusting component
				500	Second regulating assembly	510	Electric machine
520	Transmission structure	530	First gear
				540	Second gear	512	Output shaft
522	First bump	532	Second bump
				600	Detection switch	524	Trigger part
526	Main body part	514	Noumenon
				700	Starting switch	310	First stage
320	Second oneSegment of	800	Change-over switch
				330	Third stage

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

It should be noted that, if the present invention relates to directional indications (such as up, down, left, right, front, back, 8230; \8230;), the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "a and/or B" as an example, including either the a aspect, or the B aspect, or both the a and B aspects. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a flow regulating valve.

In an embodiment of the present invention, as shown in fig. 1 and 2, the flow regulating valve 10 includes a valve body (including a valve seat 200 and a valve stem 300), a first regulating assembly 400, and a second regulating assembly 500.

The valve stem 300 is provided on the valve seat 200. The valve stem 300 is rotatable with respect to the valve seat 200, i.e., the valve stem 300 is rotatably disposed on the valve seat 200. The valve stem 300 is rotated relative to the valve seat 200 to adjust the opening degree of the valve element of the flow rate adjustment valve 10, thereby adjusting the flow rate. In this embodiment, the valve body of the flow control valve 10 is a ball valve or a plug valve.

In the present embodiment, the valve stem 300 is rotatable within a first angular range. For household appliances such as a gas stove, a gas water heater, an electric water heater, etc., the difference between the upper limit value and the lower limit value of the first angle range is usually smaller than 360 °, that is, the valve rod 300 of the household appliances such as the gas stove, the gas water heater, the electric water heater, etc. can not rotate 360 ° usually. Specifically, in the present embodiment, the lower limit value of the first angle range is 0 °, and the upper limit value of the first angle range is 270 ° or less. More specifically, in the present embodiment, the upper limit value of the first angle range is larger than 180 °. Therefore, the flow can be adjusted in a large range by household appliances such as a gas stove, a gas water heater, an electric water heater and the like.

Both the first adjustment assembly 400 and the second adjustment assembly 500 are capable of driving the valve stem 300 to rotate within a first angular range, and the second adjustment assembly 500 does not interfere with the valve stem 300 to rotate freely when the valve stem 300 is driven to rotate within the first angular range by the first adjustment assembly 400.

In the above-mentioned flow control valve 10, set up first adjusting part 400 and second adjusting part 500 simultaneously, first adjusting part 400 and second adjusting part 500 homoenergetic drive valve rod 300 at first angle within range internal rotation, and when driving valve rod 300 at first angle within range internal rotation through first adjusting part 400, second adjusting part 500 does not interfere valve rod 300 and freely rotates. Therefore, the flow control valve 10 can drive the valve rod 300 to rotate within the first angle range through the first adjusting assembly 400, and can also drive the valve rod 300 to rotate within the first angle range through the second adjusting assembly 500, that is, the flow control valve 10 has various adjusting modes. And when one of the first and

second regulating assemblies

400 and 500 malfunctions, the flow regulation can be performed by the other so that the flow regulating valve 10 can still function normally.

In the embodiment, the first adjustment assembly 400 and the second adjustment assembly 500 can independently drive the valve rod 300 to rotate within the first angle range without interfering with each other, that is, when the first adjustment assembly 400 drives the valve rod 300 to rotate within the first angle range, the second adjustment assembly 500 is not operated, the second adjustment assembly 500 is not interfered with the valve rod 300 to rotate freely, when the second adjustment assembly 500 drives the valve rod 300 to rotate within the first angle range, the first adjustment assembly 400 is not operated, and the first adjustment assembly 400 is not interfered with the valve rod 300 to rotate freely. In this way, it is avoided that the first adjusting assembly 400 and the second adjusting assembly 500 adjust simultaneously to cause conflict, which affects the accuracy of flow adjustment.

In some embodiments, the first adjustment assembly 400 and the second adjustment assembly 500 are both smart adjustment assemblies (including motors and the like that enable smart control). Thus, it is very convenient to realize that the first adjustment assembly 400 and the second adjustment assembly 500 can independently drive the valve rod 300 to rotate within the first angle range without interfering with each other. In this case, the first adjustment assembly 400 and the second adjustment assembly 500 may be the same or different. In the present embodiment, the first adjustment assembly 400 and the second adjustment assembly 500 are identical, and each of the first adjustment assembly 400 and the second adjustment assembly 500 includes a motor 510, a transmission structure 520, a first gear 530, and a second gear 540, which are described below. It is understood that in other embodiments, the first adjustment assembly 400 and the second adjustment assembly 500 may omit the transmission structure 520 and have the first gear 530 fixed to the output shaft 512 of the motor 510.

In some embodiments, one of the first adjustment assembly 400 and the second adjustment assembly 500 is a smart adjustment assembly and the other is a manual adjustment assembly. Thus, the flow control valve 10 can realize both manual adjustment and intelligent adjustment. The flow regulating valve 10 with the manual regulating assembly can realize manual regulation, and the manual regulation is not easy to break down, but has the problem of inconvenient use. The flow regulating valve 10 with the intelligent regulating assembly can realize intelligent regulation, is very convenient to use, is easy to have faults (such as motor faults, power supply interruption and the like) and cannot be normally used. The flow regulating valve 10 which can realize both manual regulation and intelligent regulation can solve the problem of convenience in use and the problem of normal use when a fault occurs.

In this embodiment, the first adjustment assembly 400 is a manual adjustment assembly. In some embodiments, the first adjustment assembly 400 is located in the extension direction of the valve stem 300 and is connected to an end of the valve stem 300. Taking a gas stove as an example, the first adjusting assembly 400 is disposed on a panel of the gas stove in a penetrating manner and connected to an end of the valve rod 300, and at this time, the first adjusting assembly 400 may be a knob of the gas stove. In some embodiments, the first adjustment assembly 400 includes one end of the valve stem 300. Taking a gas stove as an example, the valve rod 300 is inserted into a panel of the gas stove, and at this time, the end of the valve rod 300 may be a knob of the gas stove.

In the present embodiment, as shown in fig. 3-6, the second adjustment assembly 500 is a smart adjustment assembly. The second adjustment assembly 500 includes a motor 510, a transmission structure 520, a first gear 530, and a second gear 540. The motor 510 is provided on the valve seat 200. The transmission structure 520 is fixedly connected with the output shaft 512 of the motor 510. The first gear 530 is rotatably disposed on the valve seat 200. The second gear 540 is fixed to the valve stem 300 and can be engaged with the first gear 530.

When the first gear is engaged with the second gear 540 530, the transmission structure 520 has a first position and a second position, in the first position, the motor 510 can drive the first gear 530 to rotate freely through the transmission structure 520, in the second position, the first adjustment assembly 400 can drive the first gear 530 to rotate freely through the second gear 540, that is, in the second position, the transmission structure 520 does not interfere with the first adjustment assembly 400 to drive the first gear 530 to rotate through the second gear 540.

In the first position, the motor 510 can drive the first gear 530 to rotate freely through the transmission structure 520, so that the first gear 530 can drive the second gear 540 fixed on the valve rod 300 to rotate freely, and further drive the valve rod 300 to rotate, thereby realizing intelligent adjustment of the flow rate, and the first adjustment assembly (manual adjustment) 400 does not interfere with the adjustment of the second adjustment assembly (intelligent adjustment assembly) 500 in the process that the valve rod 300 moves from the lower limit value of the first angle range to the upper limit value of the first angle range and in the process that the valve rod 300 moves from the upper limit value of the first angle range to the lower limit value of the first angle range.

In the second position, the transmission structure 520 does not interfere the first adjustment assembly 400 to drive the first gear 530 to rotate through the second gear 540, that is, when the flow rate is manually adjusted, the valve rod 300 is manually rotated to drive the second gear 540 to freely rotate, the second gear 540 can drive the first gear 530 to freely rotate, and in the process that the valve rod 300 moves from the lower limit value of the first angle range to the upper limit value of the first angle range and in the process that the valve rod 300 moves from the upper limit value of the first angle range to the lower limit value of the first angle range, the situation that the first gear 530 cannot freely rotate due to interference of the transmission structure 520 does not occur, that is, the second adjustment assembly 500 does not interfere the adjustment of the first adjustment assembly 400.

In addition, the second adjusting assembly (intelligent adjusting assembly) 500 is matched with the first adjusting assembly (manual adjusting assembly) 400, so that a fluid pipeline does not need to be additionally arranged, the difficulty and the air leakage risk of the installation process are reduced, and the original installation process of the household appliance and the installation process of the fluid pipeline are not influenced.

In this embodiment, the transmission structure 520 and the first gear 530 are both sleeved on the output shaft 512 of the motor 510. A first protrusion 522 is disposed on a side of the transmission structure 520 close to the first gear 530. A second protrusion 532 is disposed on a side of the first gear 530 near the transmission structure 520. In the first position, the first protrusion 522 is in contact with the second protrusion 532 in the circumferential direction of the output shaft 512. In the second position, the first and

second projections

522, 532 are spaced circumferentially of the output shaft 512. As such, not only is it convenient to achieve independent flow regulation by the first regulation assembly (manual regulation assembly) 400 and the second regulation assembly (smart regulation assembly) 500, but it is also convenient to achieve that the first regulation assembly 400 and the second regulation assembly 500 do not interfere with each other.

It is understood that, in other embodiments, the transmission structure 520 may not be sleeved on the output shaft 512 of the motor 510, but connected to the output shaft 512 of the motor 510 through a connecting member. It is understood that, in other embodiments, a mounting shaft may also be disposed on the valve seat 200, and the first gear 530 is sleeved on the mounting shaft and can rotate relative to the mounting shaft, so that the first gear 530 is rotatably disposed on the valve seat 200.

In the present embodiment, the transmission structure 520 is sleeved on the output shaft 512 of the motor 510 through a center through hole such as a D-shaped hole, a hexagonal hole or a U-shaped hole. The shape of the outer wall of the output shaft 512 is matched with the shape of the central through hole, that is, when the central through hole is a D-shaped hole, the outer wall of the output shaft 512 has a D-shaped outer wall. As such, the transmission structure 520 is secured to the output shaft 512 of the motor 510 for synchronous rotation with the output shaft 512 of the motor 510. It is understood that, in other embodiments, the shape of the outer wall of the output shaft 512 may not be matched with the central through hole, and in this case, the transmission structure 520 may be fixed on the output shaft 512 of the motor 510 by welding, gluing, or the like.

In this embodiment, the first gear 530 is sleeved on the output shaft 512 of the motor 510 through a circular hole. In this manner, rotation of the first gear 530 relative to the output shaft 512 is facilitated, thereby facilitating the transmission structure 520 to rotate the first gear 530 on the output shaft 512. In this embodiment, the first gear 530 is disposed on the output shaft 512 of the motor 510 through the circular hole in an interference manner, and a friction force between the first gear 530 and the output shaft 512 of the motor 510 is smaller than a driving force exerted by the motor 510 on the first gear 530 through the transmission structure 520. As such, not only the first gear 530 may be provided on the output shaft 512 of the motor 510, but also the first gear 530 may be allowed to rotate relative to the output shaft 512 of the motor 510.

In this embodiment, the second gear 540 is disposed on the valve stem 300 through an isocentric through hole of a D-hole, a hexagonal hole, or a U-shaped bushing. The shape of the outer wall of the valve stem 300 is adapted to the shape of the central through hole, that is, when the central through hole is a D-shaped hole, the outer wall of the valve stem 300 has a D-shaped outer wall. Thus, the second gear 540 is fixed to the valve stem 300 so as to rotate in synchronization with the valve stem 300. It will be appreciated that in other embodiments, the outer wall of the valve stem 300 may not be shaped to fit the central through hole, and the second gear 540 may be fixed to the valve stem 300 by welding, gluing, or the like.

In the present embodiment, the rotation direction of the first gear 530 is opposite to the rotation direction of the second gear 540, and the reference circle diameter of the first gear 530 is substantially the same as the reference circle diameter of the second gear 540, i.e. the transmission ratio of the first gear 530 to the second gear 540 is substantially 1. Thus, it is assumed that after the first gear 530 is rotated clockwise by the first angle, the second gear 540 engaged with the first gear 530 will be rotated counterclockwise by the first angle. In this manner, it is more convenient to control the first adjusting assembly 400 and the second adjusting assembly 500 not to interfere with each other. It is understood that in other embodiments, the transmission ratio of the first gear 530 to the second gear 540 may also be greater than 1, and may also be less than 1.

In this embodiment, during manual adjustment of the flow rate, when the valve stem 300 is rotated in a first direction (e.g., counterclockwise) and moved from a lower limit position of the first angular range to an upper limit position of the first angular range, the second protrusion 532 can be rotated in a second direction (opposite to the first direction, e.g., clockwise) and moved from a lower limit position of the second angular range to an upper limit position of the second angular range. The upper limit value of the second angle range is the same as (the same magnitude as) the upper limit value of the first angle range.

In the second position, the first protrusion 522 is located within a third angular range having a lower limit value that is the same as an upper limit value of the second angular range, the lower limit value of the second angular range being 0 ° in the second direction, and the upper limit value of the third angular range being 360 ° in the second direction. Specifically, in the present embodiment, the lower limit value of the first angle range is 0 ° in the first direction, the upper limit value of the first angle range is 270 ° in the first direction, and the lower limit value of the third angle range is 270 ° in the second direction, which is the same as the upper limit value of the second angle range.

In this embodiment, a gas stove is taken as an example to specifically describe:

the valve stem 200 can be rotated within the range of 0-270. As shown in FIG. 7, in the initial position, the first projection 522 is between 270 and 360 and the second projection 532 is at a 0 (i.e., 360) position, with the first projection 522 and the second projection 532 being spaced circumferentially of the output shaft 512.

When the intelligent adjustment is started, after the motor 510 drives the first protrusion 522 to rotate clockwise by a second angle, the second protrusion 532 contacts with the first protrusion 522 in the circumferential direction of the output shaft 512 to form a gear engaging structure, so that the motor 510 can drive the first gear 530 (the second protrusion 532) to rotate clockwise through the transmission structure 520 (the first protrusion 522). As shown in fig. 7 and 8, when the second protrusion 532 rotates clockwise from the 0 ° position to the 270 ° position, that is, after the first gear 530 rotates clockwise by 270 °, the second gear 540 and the valve stem 300 rotate counterclockwise by 270 °, that is, the second gear 540 and the valve stem 300 rotate counterclockwise from the 0 ° position to the 270 ° position. At this time, if the second gear 540 and the valve rod 300 need to be rotated from the 270 ° position to the 0 ° position, that is, the second gear 540 and the valve rod 300 need to be rotated clockwise by 270 °:

the motor 510 may be reversed to rotate the first protrusion 522 counterclockwise 270 + a second angle, then returned to the initial position (between 270-360), and then manually adjusted to rotate the second protrusion 532 counterclockwise 270, thus rotating the 270 position to the 0 position. Since the first protrusion 522 has returned to the initial position at this time, the first protrusion 522 and the second protrusion 532 are always spaced in the circumferential direction of the output shaft 512 during manual adjustment, and interference does not occur.

The motor 510 can also be reversely rotated to drive the first protrusion 522 to rotate 360 degrees counterclockwise, and rotate to the other side of the second protrusion 532, and contact with the side, and then intelligently adjust, the motor 510 drives the second protrusion 532 to rotate 270 degrees counterclockwise through the first protrusion 522, so that the 270 degree position rotates to the 0 degree position. Finally, the motor 510 is rotated reversely to rotate the first protrusion 522 clockwise by 360 ° to a second angle, and then returns to the initial position (between 270 ° and 360 °).

In this embodiment, the valve seat 200 includes a mounting cartridge 210. The mounting box 210 includes a box body 212 and a box cover 214. The box body 212 is sleeved on the valve rod 300. A second conditioning assembly (smart conditioning assembly) 500 is disposed within the cartridge body 212. A cap 214 is fitted over the valve stem 300 and closes the open end of the body 212. Wherein the valve stem 300 can be rotated with respect to the mounting box 210. The installation box 210 is provided to protect the second adjustment assembly (smart adjustment assembly) 500.

In this embodiment, the flow control valve 10 further includes a detection switch 600. The detection switch 600 is provided on the valve seat 200. Specifically, in the present embodiment, the detection switch 600 is provided in the mounting box 210. The mounting box 210 can preferably protect the detection switch 600.

The transmission structure 520 includes a plurality of triggering portions 524, and the plurality of triggering portions 524 are arranged at intervals along the circumferential direction of the transmission structure 520. The plurality of triggering parts 524 may intermittently trigger the detection switch 600 during the rotation of the transmission structure 520. In this way, the rotation angle of the valve rod 300 can be determined according to the trigger signal of the detection switch 600, so as to determine the flow rate. It will be appreciated that in other embodiments, the detection switch 600 and the trigger 524 may be omitted, and the amount of flow may be determined by determining the degree of rotation of the valve stem 300 by the number of steps the motor 510 rotates.

In the present embodiment, the detection switch 600 is a microswitch. Wherein, the micro-gap switch includes normally closed micro-gap switch and normally open micro-gap switch. The normally closed micro switch generates a trigger signal if opened at a certain time, and the normally open micro switch generates a trigger signal if closed at a certain time. Specifically, in the present embodiment, the microswitch is a normally open microswitch.

In the present embodiment, the plurality of triggering portions 524 are arranged at equal intervals. In this way, it is more convenient to determine the rotation angle of the valve rod 300 according to the trigger signal of the detection switch 600, so as to determine the flow rate.

In the present embodiment, the interval between two adjacent triggering portions 524 is greater than the interval between two adjacent teeth of the first gear 530, and the number of the triggering portions 524 is greater than or equal to four. In this way, the distance between two adjacent triggering portions 524 can be prevented from being too small or too large, so that the triggering frequency of the detection switch 600 can be moderate, and cannot be too fast or too slow. Specifically, in the present embodiment, the number of the trigger portions 524 is ten or more.

In this embodiment, the transmission structure 520 further includes a body portion 526. The body 526 is disposed on the output shaft 512 of the motor 510. The first protrusion 522 is provided on a side of the body portion 526 adjacent to the first gear 530. The plurality of trigger portions 524 are provided at intervals on the outer peripheral wall of the body portion 526. In this way, the trigger 524 and the detection switch 600 may be located at the same height and may interact with each other. When the body portion 526 is cylindrical, the body portion 526 and the plurality of triggers 524 can be considered to define an incomplete gear, and the incomplete gear is a cylindrical gear.

It will be appreciated that in other embodiments, the body portion 526 has a tapered end surface and the plurality of trigger portions 524 are spaced circumferentially of the tapered end surface. In this manner, the trigger 524 and the detection switch 600 may be located at different heights and may interact with each other. At this time, when the body portion 526 has a cylindrical shape, it may be considered that the body portion 526 and the plurality of triggering portions 524 define an incomplete gear, and the incomplete gear is a bevel gear.

In this embodiment, the body portion 526 and the plurality of triggers 524 define an incomplete gear having a pitch diameter that is smaller than a pitch diameter of the first gear 530. In this way, the transmission structure 520 can have a smaller size on the premise of satisfying the trigger detection switch 600, thereby facilitating the obtainment of the flow rate adjustment valve 10 having a smaller size.

In this embodiment, the main body 526 and the first gear 530 are both sleeved on the output shaft 512 of the motor 510, and the main body 526 is located between the first gear 530 and the body 514 of the motor 510. The main body part 526 is located between the main body part 526 and the body 514 of the motor 510 relative to the first gear 530, and the main body part 526 is located between the first gear 530 and the body 514 of the motor 510, so that the motor 510 can drive the first gear 530 to stably rotate through the transmission structure 520, and the over-height of the detection switch 600 matched with the trigger part 524 can be avoided.

In the present embodiment, as shown in fig. 3, 9 and 10, the flow rate adjustment valve 10 further includes a start switch 700. The start switch 700 is provided on the valve seat 200. The valve stem 300 has a flow-off position. When the valve stem 300 is in the flow-off position, no flow may be considered to pass through the flow control valve 10. In the flow off position, the valve stem 300 is movable along its length to have a closed position and an open position. Taking a gas stove as an example, the start switch 700 is an ignition switch of the gas stove, the closed position is an off position, and the start position is an ignition position.

In the closed position, the second gear 540 is spaced from the first gear 530 in the length direction of the valve stem 300. In the open position, the second gear 540 is engaged with the first gear 510, and the valve stem 300 triggers the start switch 700 to energize the controller of the home appliance, thereby energizing the motor 510, the detection switch 600, and the like (at this time, the motor 510 does not rotate). Specifically, pressing the valve stem 300 downward may switch the position of the valve stem 300 from the closed position to the open position, and when the downward pressure applied to the valve stem 300 is removed (at this time, the valve stem 300 is still in the flow rate closing position and is not rotated), the position of the valve stem 300 may be switched from the open position to the closed position.

Specifically, in the present embodiment, the valve stem 300 has a first section 310 and a second section 320. The second section 320 is located below the first section 310, and the outer diameter of the second section 320 is smaller than the outer diameter of the first section 310. In the closed position, the pressing part 710 of the start switch 700 is opposite to and spaced from the outer wall of the second section 320; and in the open position, the pressing portion 710 of the start switch 700 is opposite to and abutted against the outer wall of the first section 310. By providing the first section 310 and the second section 320 with different outer diameters, it is very convenient to activate the start switch 700.

It is understood that in other embodiments, the valve stem 300 has a first section 310 and a second section 320. The second section 320 is located below the first section 310, and the outer diameter of the second section 320 is greater than the outer diameter of the first section 310. In the closed position, the pressing portion 710 of the start switch 700 faces and abuts against the outer wall of the second section 320; in the open position, the pressing portion 710 of the start switch 700 is opposite to and spaced apart from the outer wall of the first section 310.

In this embodiment, the start switch 700 is a microswitch. Wherein, the micro-gap switch includes normally closed micro-gap switch and normally open micro-gap switch. The normally closed microswitch generates a trigger signal if opened at a certain time, and the normally open microswitch generates a trigger signal if closed at a certain time. Specifically, in the present embodiment, the micro switch may be a normally open micro switch or a normally closed micro switch.

In this embodiment, the flow control valve 10 further includes a switch 800. The diverter switch 800 is provided on the valve seat 200. The switch 800 is electrically connected to the motor 510.

In the present embodiment, the valve lever 300 has a flow rate off position and a preset flow rate position rotated by a preset angle. When the valve rod 300 rotates to a preset flow gear, the valve rod 300 triggers the switch 800 to control the motor 510 to drive the transmission structure 520 to rotate through the controller of the household appliance.

In some embodiments, when the switch 800 is triggered by the valve stem 300, the controller of the household appliance controls the motor 510 to enter a standby state. At this time, if the controller of the home appliance receives an external instruction (i.e., an instruction to start the automatic fire-adjusting function), and the automatic fire-adjusting function is started, the motor 510 entering the standby state starts to rotate. The control keys of the household appliance in communication connection with the controller can provide external instructions, the remote controller of the household appliance in communication connection with the controller can also provide the external instructions, and the mobile terminal in communication connection with the controller can also provide the external instructions. Therefore, the automatic fire adjusting function can be prevented from being started by mistake.

In some embodiments, when the switch 800 is triggered by the valve stem 300, the controller of the household appliance directly activates the automatic fire-adjusting function and controls the motor 510 to start rotating. Therefore, the automatic fire adjusting function can be conveniently started.

In this embodiment, the preset flow gear is a minimum flow gear of the household appliance. Taking a gas stove as an example, after the valve rod 300 rotates 180 degrees counterclockwise from the flow closing gear, the minimum fire gear can be reached. Thus, the user can conveniently determine the position of the preset flow gear. In addition, the minimum firepower gear serves as an intelligent adjusting starting gear, and the problem that food materials are burnt due to overlarge firepower of the starting gear can be avoided. It is understood that the preset flow gear may be other flow gears.

In this embodiment, the valve stem 300 also has a third section 330. The third section 330 is located below the second section 320. The third section 330 is provided with a notch 332. In the process that the valve rod 300 rotates from the flow closing gear to the preset flow gear, the pressing part 810 of the switch 800 abuts against the outer wall of the third section 330, and when the valve rod 300 rotates to the preset flow gear, the pressing part 810 of the switch 800 is located in the notch 332 and is spaced from the inner wall of the notch 332. It is understood that in other embodiments, during the rotation of the valve rod 300 from the flow-off position to the preset flow position, the pressing part 810 of the switch 800 is located in the notch 332 and spaced from the inner wall of the notch 332, and when the valve rod 300 is rotated to the preset flow position, the pressing part 810 of the switch 800 is abutted against the outer wall of the third segment 330.

Specifically, in this embodiment, the third section 330 has an outer diameter that is greater than the outer diameter of the second section 320. In this manner, the valve stem 300 may be made to have a better structural strength. More specifically, in the present embodiment, the outer diameter of the third section 330 is substantially the same as the outer diameter of the first section 310. It is understood that in other embodiments, the outer diameter of the third segment 330 may be equal to the outer diameter of the second segment 320, and the third segment 330 may be considered to be part of the second segment 320.

The switch 800 is a microswitch. Wherein, the micro-gap switch includes normally closed micro-gap switch and normally open micro-gap switch. The normally closed micro switch generates a trigger signal if opened at a certain time, and the normally open micro switch generates a trigger signal if closed at a certain time. Specifically, in the present embodiment, the micro switch may be a normally open micro switch or a normally closed micro switch.

The present invention further provides a household appliance, which includes a flow regulating valve 10, and the specific structure of the flow regulating valve 10 refers to the above embodiments, and since the household appliance adopts all technical solutions of all the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and details are not repeated herein.

The household appliance controls the flow of gas and liquid through the flow regulating valve 10. In some embodiments, the household appliance is a gas range, and in this case, the flow of gas can be controlled by the flow control valve 10. In some embodiments, the household appliance is a gas water heater, and in this case, the flow rate of the gas can be controlled by the flow rate adjusting valve 10. In some embodiments, the household appliance is an electric water heater, and in this case, the flow rate of water can be controlled by the flow regulating valve 10.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A flow control valve, comprising:

the valve body comprises a valve seat and a valve rod which is arranged on the valve seat and can rotate in a first angle range;

a first adjustment assembly capable of driving the valve stem to rotate within the first angular range; and

a second adjustment assembly capable of driving the valve stem to rotate within the first angular range;

when the valve rod is driven to rotate in the first angle range through the first adjusting component, the second adjusting component does not interfere the valve rod to rotate freely.

2. The flow control valve according to claim 1, characterized in that the lower limit value of the first angle range is 0 °, and the upper limit value of the first angle range is greater than 180 ° and 270 ° or less.

3. The flow control valve of claim 1, wherein said first adjustment assembly includes one end of said valve stem;

4. The flow control valve of claim 1, wherein the second adjustment assembly includes a motor disposed on the valve seat, a transmission structure fixedly coupled to an output shaft of the motor, a first gear rotatably disposed on the valve seat, and a second gear fixedly coupled to the valve stem and engageable with the first gear;

5. The flow control valve according to claim 4, wherein the transmission structure and the first gear are both disposed through the output shaft, the transmission structure is provided with a first protrusion, the first gear is provided with a second protrusion, in the first position, the first protrusion is in contact with the second protrusion in the circumferential direction of the output shaft, and in the second position, the first protrusion is spaced from the second protrusion in the circumferential direction of the output shaft.

6. The flow control valve of claim 5, wherein when the valve stem is rotated in a first direction and moved from a lower limit position of the first angular range to an upper limit position of the first angular range, the second projection is rotated in a second direction and moved from a lower limit position of a second angular range to an upper limit position of the second angular range, the upper limit of the second angular range being the same as the upper limit of the first angular range;

7. The flow control valve of claim 4, further comprising a detection switch disposed on the valve seat;

the circumference of transmission structure is provided with a plurality of trigger parts, transmission structure pivoted in-process, it is a plurality of trigger part can intermittent type trigger detect switch.

8. The flow control valve according to claim 7, wherein a plurality of the triggering portions are arranged at equal intervals; and/or

9. The flow control valve of claim 4, further comprising an activation switch disposed on said valve seat, said valve stem being movable along its length in a flow off position of said valve stem to have a closed position in which said second gear is spaced from said first gear in said valve stem length direction and an open position in which said second gear is engaged with said first gear, said valve stem activating said activation switch; and/or

Still including locating change over switch on the disk seat, change over switch with the motor electricity is connected, the valve rod has the flow and closes the predetermined flow gear behind the gear and the rotatory predetermined angle, the valve rod is rotatory extremely when predetermineeing the flow gear, the valve rod triggers change over switch, in order to control motor drive transmission structure rotates.

10. A household appliance comprising a flow regulating valve according to any one of claims 1 to 9, said valve body being a ball or plug valve.