A low-torque rotary temperature control device and faucet

Abstract

The present invention belongs to the field of valve cores, and particularly relates to a low-torque rotary temperature control device and a faucet having the temperature control device. By changing to the side water inlet method, the problem that when the product is in use, the water pressure caused by the lower-end water inlet method increases the axial pressure on the valve core, resulting in too much resistance during rotation, is solved. Moreover, this structure cancels the large flat surface structure of the valve core opposite to the connecting seat, and optimizes the resistance generated between the two relatively moving parts to the greatest extent from the structure, effectively reducing the problem that the rotation resistance of the valve core increases due to the water pressure acting on the valve core.

Description

Technical Field

[0001] The present invention belongs to the field of valve cores, and particularly relates to a low-torque rotary temperature control device and a faucet having the temperature control device.

Background Art

[0002] In sanitary wares and household faucet water outlet appliances, a cold and hot water mixing valve core is commonly used as a temperature control element. Generally, by rotating the valve core, the flow rates of cold water and hot water are controlled to mix and flow out, thereby achieving the effect of temperature control. However, the existing cold and hot water mixing valve cores generally include an outer sleeve body and a rotating valve core. The rotating valve core is sleeved inside the outer sleeve body. The water inlet of the outer sleeve body is generally arranged at the bottom or the top. For the existing rotating valve core, the other end opposite to the water inlet is generally a flat end. When the rotating valve core is installed in the outer sleeve body, due to the limitation of the assembly structure, the flat end of the rotating valve core and the inner wall of the outer sleeve body opposite thereto will be pressed against each other, increasing the friction when the rotating valve core rotates relative to the outer sleeve body.

[0003] Moreover, during use, the water flow entering the valve core from the water inlet will impact the valve core in the axial direction, resulting in an increase in the pressure on the valve core in the axial direction, thereby further increasing the contact pressure between the flat end of the rotating valve core and the inner wall of the outer sleeve body, resulting in an increase in the resistance when the rotating valve core rotates relative to the outer sleeve body. Currently, most of the usage methods are by manual twisting. When twisting significantly, the influence of this resistance is not obvious. However, when finely adjusting the water temperature, it is easy to have a situation where the twisting amplitude is too small and the water temperature does not change, or due to the need to overcome this additional resistance, the twisting amplitude is too large. Due to the defect of this structure, the actual temperature control effect of the valve core is poor and it is inconvenient to use.

[0004] In addition, under the current development trend of automation and intelligence, using a driving member such as a motor to rotate the valve core is an improvement in the electronic intelligence of the mixing valve core. However, due to the defect of the above structure, it will affect the driving force of the motor on the rotation of the valve core. The motor drives the traditional valve core to rotate, which requires a greater torque, resulting in difficulty in accurately controlling the rotation angle of the motor-driven valve core, and ultimately leading to a decline in the automation temperature control effect. Currently, a motor with a larger torque is also equipped to solve the problem of the large rotation torque of the traditional valve core. However, the motors that meet this requirement are generally large in volume, which is not conducive to the structural design of the faucet, and the corresponding power consumption is also large.

Summary of the Invention

[0005] In order to solve the problem in the prior art that the pressure on the valve core in the axial direction increases due to the water pressure of the cold and hot water mixing valve core with water inlet at the lower end, resulting in too large resistance during rotation, the present invention provides a low-torque rotary temperature control device.

[0006] The present invention is realized through the following technical solutions:

[0007] A low-torque rotary temperature control device, comprising;

[0008] Connection seat: An annular installation cavity is provided thereon, penetrating through its upper and lower end faces. At least a first water inlet and a second water inlet are provided on the circumferential side surface of the connection seat. Both the first water inlet and the second water inlet communicate with the installation cavity, and the first plane where the first water inlet is located and the second plane where the second water inlet is located are distributed up and down along the axis of the connection seat;

[0009] Valve core: It is coaxially installed with the connection seat and is located in the installation cavity and can rotate relative to the connection seat around its own axis. A mixing water channel is provided on the valve core, penetrating through its upper and lower end faces. At least a first notch and a second notch communicating with the mixing water channel are provided on the circumferential side surface of the valve core. When the valve core is installed on the connection seat, the first notch is located in the first plane where the first water inlet is located, and the second notch is located in the second plane where the second water inlet is located.

[0010] Wherein, in this solution, the area ratio of the first notch to the first water inlet is defined as the first opening degree K1, and the area ratio of the second notch to the second water inlet is defined as the second opening degree K2. When the valve core is rotated to any angle, the sum of K1 and K2 is 1.

[0011] For a low-torque rotary temperature control device as described above, the axis of the mixing water channel is coaxial with the axis of the valve core.

[0012] For a low-torque rotary temperature control device as described above, the valve core is a rotary body, its outer peripheral surface is a polished mirror surface, and the annular inner peripheral surface of the connection seat is also a polished mirror surface.

[0013] For a low-torque rotary temperature control device as described above, the first water inlet and the second water inlet have the same orientation, and the second water inlet is located below the first water inlet. The first notch and the second notch are arranged with a 180° offset along the axis of the valve core.

[0014] For a low-torque rotary temperature control device as described above, the first water inlet and the second water inlet are arranged with a 180° offset along the axis of the connection seat, and the first notch and the second notch have the same orientation.

[0015] For a low-torque rotary temperature control device as described above, the connection seat further includes a third water inlet and a fourth water inlet. The third water inlet is located in the first plane where the first water inlet is located and is arranged 180° apart from the first water inlet. The fourth water inlet is located in the second plane where the second water inlet is located and is arranged 180° apart from the second water inlet;

[0016] The valve core further includes a third notch and a fourth notch. The third notch is located in the plane where the first notch is located and is arranged at an interval of 180° from the first notch. The fourth notch is located in the plane where the second notch is located and is arranged at an interval of 180° from the second notch.

[0017] For a low-torque rotary temperature control device as described above, the first water inlet, the second water inlet, the first notch, and the second notch are all semi-circular arc-shaped openings.

[0018] For a low-torque rotary temperature control device as described above, the first water inlet, the second water inlet, the third water inlet, the fourth water inlet, the first notch, the second notch, the third notch, and the fourth notch are all 1 / 4 circular arc-shaped openings.

[0019] For a low-torque rotary temperature control device as described above, a first seal ring installation position and a second seal ring installation position are further provided on the outer peripheral surface of the connecting seat. The first seal ring installation position is located between the first water inlet and the second water inlet, and the second seal ring installation position is located above the first water inlet.

[0020] The present invention further provides a faucet, including a faucet body, and a low-torque rotary temperature control device as described above is provided inside the faucet body.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The present invention provides a low-torque rotary temperature control device, which changes to the side water inlet method, solves the problem that when the product is in use, due to the water pressure of the lower-end water inlet method, the pressure on the valve core in the axial direction increases, resulting in too much resistance during rotation. Moreover, this structure cancels the large-plane structure of the valve core relative to the connecting seat, and optimizes the resistance generated between the two relative moving parts to the greatest extent from the structure, effectively reducing the problem that the resistance of the valve core to rotate increases due to the water pressure acting on the valve core.

[0023] 2. For a low-torque rotary temperature control device of the present invention, by rotating the valve core at different angles, controlling the different opening degrees of the first notch on the valve core and the first water inlet, and the different opening degrees of the second notch and the second water inlet, the proportion of cold and hot water entering the mixing channel is realized, so as to realize the adjustment and control of the water temperature.

[0024] 3. For a low-torque rotary temperature control device of the present invention, through the optimization of the structure, the relative movement resistance between the valve core and the connecting seat is reduced, which is convenient for the accuracy when the valve core is driven to rotate by a motor in an automated application, is beneficial to automated control, and accurately adjusts the temperature.

Description of the Drawings

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0026] Figure 1 Structural schematic diagram of Embodiment 1 of a low-torque rotary temperature control device of the present invention;

[0027] Figure 2 For Figure 1 exploded view of;

[0028] Figure 3 For Figure 1 structural schematic diagram of the connecting seat in;

[0029] Figure 4 For Figure 1 structural schematic diagram of the valve core in;

[0030] Figure 5 Structural schematic diagram of Embodiment 2 of a low-torque rotary temperature control device of the present invention;

[0031] Figure 6 Structural schematic diagram of a faucet of the present invention;

[0032] Figure 7 For Figure 6 semi-sectional view of.

Specific Embodiments

[0033] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The present invention is achieved through the following technical solutions:

[0035] Such as Figures 1 to 4As shown in the figure, a low-torque rotary temperature control device includes: a connecting seat 1: an annular installation cavity 101 is provided thereon, penetrating through its upper and lower end faces. At least a first water inlet 11 and a second water inlet 12 are provided on the circumferential side surface of the connecting seat 1. The first water inlet 11 and the second water inlet 12 are both communicated with the installation cavity 101, and a first plane where the first water inlet 11 is located and a second plane where the second water inlet 12 is located are distributed up and down along the axis of the connecting seat 1; a valve core 2: coaxially installed with the connecting seat 1 and located in the installation cavity 101, capable of rotating relative to the connecting seat 1 around its own axis. A mixing water channel 201 is provided on the valve core 2, penetrating through its upper and lower end faces. At least a first notch 21 and a second notch 22 communicated with the mixing water channel 201 are provided on the circumferential side surface of the valve core 2. When the valve core 2 is installed on the connecting seat 1, the first notch 21 is located in the first plane where the first water inlet 11 is located, and the second notch 22 is located in the second plane where the second water inlet 12 is located. The present invention provides a low-torque rotary temperature control device, which changes to the side water inlet method, solves the problem that when the product is in use, due to the water pressure of the lower water inlet method, the pressure on the valve core in the axial direction increases, resulting in too much resistance when rotating. Moreover, the valve core of this structure cancelled has a large plane structure opposite to the connecting seat, which optimizes the resistance generated between the two relative moving parts to the greatest extent from the structure, and effectively reduces the problem that the resistance of the valve core increases due to the water pressure acting on the valve core.

[0036] In this solution, by rotating the valve core at different angles, controlling the different opening degrees between the first notch on the valve core and the first water inlet, and the different opening degrees between the second notch and the second water inlet, the proportion of cold and hot water entering the mixing channel is realized, so as to realize the adjustment and control of the water temperature. Among them, the area ratio of the first notch 21 relative to the first water inlet 11 is defined as the first opening degree K1, and the area ratio of the second notch 22 relative to the second water inlet 12 is defined as the second opening degree K2. When the valve core 2 is rotated to any angle, the sum of K1 and K2 is 1. Through this way of limitation, it is beneficial for this structure to simply estimate the water inflow by the opening degree during automatic control. For example, the first water inlet is connected to hot water, and the second water inlet is connected to cold water. That is, under the condition of certain water pressure, when the opening degree of the first water inlet is controlled to be 30%, the opening degree of the second water inlet is 70% at this time. In this way, the ratio of hot water to cold water can be changed to 3:7, so as to achieve the temperature control effect.

[0037] Moreover, through the above-mentioned limitation of the opening degree, the following conditions are satisfied simultaneously. When the first notch 21 is completely opposite to the first water inlet 11, the second notch 22 is offset from the second water inlet 12, and the second water inlet 12 is in a blocked state with respect to the mixing water channel 201. Similarly, when the second notch 22 is completely opposite to the second water inlet 12, the first notch 21 is offset from the first water inlet 11, and the first water inlet 11 is in a blocked state with respect to the mixing water channel 201.

[0038] In the embodiment of the present invention, the axis of the mixing water channel 201 is coaxial with the axis of the valve core 2. Both ends of the mixing water channel 201 can be used as the water outlet end by docking with the water outlet, and water can flow out axially.

[0039] In addition, in the embodiment of the present invention, the valve core 2 is a rotating body, and its outer peripheral surface is a polished mirror surface. The annular inner peripheral surface of the connecting seat 1 is also a polished mirror surface. Through the grinding treatment of the opposite peripheral surfaces of the valve core 2 and the connecting seat 1, the resistance when the valve core rotates relative to the connecting seat is effectively reduced. Moreover, through the cooperation of the mirror surfaces, it is beneficial to seal the gap between the valve core and the connecting seat, preventing cold and hot water from flowing out from the gap between the valve core and the connecting seat.

[0040] In the embodiment of the present invention, the first water inlet 11 and the second water inlet 12 face the same direction, and the second water inlet 12 is located below the first water inlet 11. The first notch 21 and the second notch 22 are offset by 180° along the axis of the valve core 2. Through the structural design, after rotating the valve core 2, the angles at which the first notch and the second notch radially formed thereon are opposite to the first water inlet and the second water inlet are different, that is, the above-mentioned opening degree, so as to change the amount of cold and hot water entering the mixing channel, and finally achieve the effect of temperature adjustment.

[0041] In addition, as Figure 5 shown, it is a schematic structural diagram of the second embodiment of the present invention. The above effect can also be achieved through this setting method. The first water inlet 11 and the second water inlet 12 are offset by 180° along the axis of the connecting seat 1, and the first notch 21 and the second notch 22 face the same direction. That is, this solution satisfies that if the first notch and the second notch of the valve core are arranged in the same direction, the first water inlet and the second water inlet on the connecting seat are arranged in a staggered manner; if the first notch and the second notch of the valve core are arranged in a staggered manner, the first water inlet and the second water inlet on the connecting seat are arranged in the same direction.

[0042] In the embodiment of the present invention, as Figures 1 to 4As shown, the water inflow is increased by providing multiple water inlets and multiple notches. Specifically, the connecting seat 1 further includes a third water inlet 13 and a fourth water inlet 14. The third water inlet 13 is located in the first plane where the first water inlet 11 is located and is arranged at an interval of 180° from the first water inlet 11. The fourth water inlet 14 is located in the second plane where the second water inlet 12 is located and is arranged at an interval of 180° from the second water inlet 12. The valve core 2 further includes a third notch 23 and a fourth notch 24. The third notch 23 is located in the plane where the first notch 21 is located and is arranged at an interval of 180° from the first notch 21. The fourth notch 24 is located in the plane where the second notch 22 is located and is arranged at an interval of 180° from the second notch 22.

[0043] In the above embodiment with double water inlets and double notches, in order to satisfy that the sum of K1 and K2 is 1, the first water inlet 11, the second water inlet 12, the first notch 21, and the second notch 22 are all semi-circular arc-shaped openings.

[0044] In the above embodiment with four water inlets and four notches, in order to satisfy that the sum of K1 and K2 is 1, the first water inlet 11, the second water inlet 12, the third water inlet 13, the fourth water inlet 14, the first notch 21, the second notch 22, the third notch 23, and the fourth notch 24 are all 1 / 4 circular arc-shaped openings.

[0045] In addition, in order to improve the sealing performance after the connecting seat is installed, a first sealing ring installation position 102 and a second sealing ring installation position 103 are further provided on the outer peripheral surface of the connecting seat 1. The first sealing ring installation position 102 is located between the first water inlet 11 and the second water inlet 12, and the second sealing ring installation position 103 is located above the first water inlet 11.

[0046] As Figure 6 、 Figure 7 shown, the present invention further provides a faucet, including a faucet body 9, and the faucet body 9 is internally provided with a low-torque rotary temperature regulating device as described above. Since the cold and hot water mixing temperature regulating device is included, it also has corresponding beneficial effects.

[0047] Furthermore, in the embodiment of the present invention, an assembly cavity 901 is provided inside the faucet body 9, and the faucet body 9 is further provided with a first interface 902, a second interface 903, and a water outlet 904 that communicate with the assembly cavity 901. The low-torque rotary temperature control device is disposed in the assembly cavity 901 and cooperates with the assembly cavity 901 to divide the assembly cavity 901 into a first water inlet passage 904 that communicates the first interface 902 with the first water inlet 11, a second water inlet passage 905 that communicates the second interface 903 with the second water inlet 12, and a water outlet passage 907 that communicates the water outlet 904 with the mixing water channel 201.

[0048] In the embodiment of the present invention, in order to improve the automation of the faucet, a motor drive assembly is further included, which includes a drive motor 91 disposed in the assembly cavity 901 and a rotating member 92 connected between the drive motor 91 and the valve core 2. The motor drives the rotating member to rotate to drive the valve core to rotate relative to the connecting seat 1.

[0049] In addition, in order to improve the temperature control accuracy, this solution further includes a temperature sensor 93, and the temperature sensor 93 is disposed in the mixing water channel 201. In this solution, the faucet body 9 is further provided with a temperature display screen and a battery that supplies power to the temperature display screen and the motor. It is integrated with the faucet body 9, making the structure more compact and improving the intelligent performance of the product.

[0050] Moreover, in the embodiment of the present invention, in order to ensure the normal use of the electrical components inside the faucet, the assembly cavity is separated by structural sealing. For example, in this solution, an outer shell 94 is further provided outside the connecting seat 1. In addition to connecting and fixing the low-torque rotary temperature control device, the outer shell 94 also seals and separates the first water inlet passage 904, the second water inlet passage 905, and the side of the motor.

[0051] The present invention provides a low-torque rotary temperature control device, which changes to a side water inlet method, solves the problem that when the product is in use, due to the water pressure of the lower water inlet method, the pressure on the valve core in the axial direction increases, resulting in too much resistance when rotating. Moreover, this structure cancels the large flat surface structure of the valve core relative to the connecting seat, and optimizes the resistance generated between the two relatively moving parts to the greatest extent from the structure, effectively reducing the problem that the resistance of the valve core increases due to the water pressure acting on the valve core.

[0052] As described above, one or more implementation manners are provided in combination with specific contents, and it is not determined that the specific implementation of the present invention is only limited to these descriptions. All those that are similar or identical to the method and structure of the present invention, or those that make several technical deductions or substitutions under the premise of the concept of the present invention, should be regarded as the protection scope of the present invention.

Claims

1. A low-torque rotary temperature control device, characterized in that, including; Connecting seat (1): An annular installation cavity (101) runs through its upper and lower end faces. At least a first water inlet (11) and a second water inlet (12) are provided on the circumferential side of the connecting seat (1). Both the first water inlet (11) and the second water inlet (12) are communicated with the installation cavity (101). The first plane where the first water inlet (11) is located and the second plane where the second water inlet (12) is located are distributed up and down along the axis of the connecting seat (1); Valve core (2): It is coaxially installed with the connecting seat (1) and is located in the installation cavity (101) and can rotate relative to the connecting seat (1) around its own axis. A mixing water channel (201) runs through its upper and lower end faces on the valve core (2). At least a first notch (21) and a second notch (22) communicated with the mixing water channel (201) are provided on the circumferential side of the valve core (2). When the valve core (2) is installed on the connecting seat (1), the first notch (21) is located in the first plane where the first water inlet (11) is located, and the second notch (22) is located in the second plane where the second water inlet (12) is located; Wherein, the area ratio of the first notch (21) relative to the first water inlet (11) is defined as the first opening degree K1, and the area ratio of the second notch (22) relative to the second water inlet (12) is defined as the second opening degree K2. When the valve core (2) is rotated to any angle, the sum of K1 and K2 is 1; The axis of the mixing water channel (201) is coaxial with the axis of the valve core (2); The first water inlet (11) and the second water inlet (12) face the same direction, and the second water inlet (12) is located below the first water inlet (11). The first notch (21) and the second notch (22) are arranged with a 180° dislocation along the axis of the valve core (2); The connecting seat (1) further includes a third water inlet (13) and a fourth water inlet (14). The third water inlet (13) is located in the first plane where the first water inlet (11) is located and is arranged with a 180° interval from the first water inlet (11). The fourth water inlet (14) is located in the second plane where the second water inlet (12) is located and is arranged with a 180° interval from the second water inlet (12); The valve core (2) further includes a third notch (23) and a fourth notch (24). The third notch (23) is located in the plane where the first notch (21) is located and is arranged with a 180° interval from the first notch (21). The fourth notch (24) is located in the plane where the second notch (22) is located and is arranged with a 180° interval from the second notch (22); 2. The low-torque rotary temperature regulating device according to claim 1, wherein The valve core (2) is a rotating body, and its outer peripheral surface is a polished mirror surface. The annular inner peripheral surface of the connecting seat (1) is also a polished mirror surface.

3. A low-torque rotary temperature control device according to any one of claims 1-2, characterized in that, The first water inlet (11), the second water inlet (12), the first notch (21), and the second notch (22) are all semi-circular arc-shaped openings.

4. A low-torque rotary temperature control device according to claim 1, characterized in that, The first water inlet (11), the second water inlet (12), the third water inlet (13), the fourth water inlet (14), the first notch (21), the second notch (22), the third notch (23), and the fourth notch (24) are all quarter-circular openings.

5. A low-torque rotary temperature control device according to claim 1, characterized in that, A first sealing ring installation position (102) and a second sealing ring installation position (103) are further provided on the outer peripheral surface of the connection seat (1). The first sealing ring installation position (102) is located between the first water inlet (11) and the second water inlet (12), and the second sealing ring installation position (103) is located above the first water inlet (11).

6. A faucet, characterized in that, It includes a faucet body (9), and a low-torque rotary temperature adjustment device according to any one of claims 3-5 is provided in the faucet body (9).

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