CN-113356316-B - Water tank liquid level control device and method, water tank device and sanitary cleaning device

CN113356316BCN 113356316 BCN113356316 BCN 113356316BCN-113356316-B

Abstract

The invention discloses a water tank liquid level control device and method, a water tank device and a sanitary cleaning device, wherein the water tank liquid level control device comprises a water tank, a floating body and a pressure detector, wherein the water tank is provided with a water inlet, a water outlet and an exhaust hole, the pressure detector is used for detecting the internal pressure of the water tank, the floating body is positioned in the water tank, floats upwards along with the rising of the liquid level in the water tank, limits the discharge of gas in the water tank from the exhaust hole when the floating body floats upwards to the highest position, and outputs a pressure signal for controlling the water tank to stop water inlet when the pressure in the water tank is increased to be greater than or equal to a first preset value. The invention adopts the floating body to control whether the water tank is exhausted in the water inlet process, and adopts the pressure detector to detect the increase of the pressure in the water tank and output the pressure signal for controlling the water tank to stop water inlet when the exhaust hole is not exhausted, so that the pressure detector does not need to be in contact with liquid, has low sealing requirement, reduces the cost and is beneficial to prolonging the service life of the pressure detector.

Inventors

LIN XIAOFA
LIN XIAOSHAN
LIU ZUHUA
XU PENG
LIN GENYUAN

Assignees

厦门科牧智能技术有限公司

Dates

Publication Date: 20260508
Application Date: 20210618

Claims (8)

1. The water tank liquid level control device comprises a water tank, wherein the water tank is provided with a water inlet, a water outlet and an exhaust hole, and is characterized by further comprising a floating body and a pressure detector for detecting the internal pressure of the water tank, wherein the floating body is positioned in the water tank, floats upwards along with the rising of the liquid level in the water tank, limits the gas in the water tank from being exhausted from the exhaust hole when the floating body floats upwards to the highest position, and outputs a pressure signal for controlling the water tank to stop water inlet when the pressure in the water tank is increased to be greater than or equal to a first preset value; The pressure relief assembly comprises a hollow first guide piece, a hollow second guide piece and a reset part, wherein the first guide piece is provided with a first through hole, the second guide piece is provided with a second through hole, the second guide piece is arranged in the water tank, the first guide piece is sleeved in the second guide piece in a vertically movable mode, the floating body is positioned in the first guide piece, the second through hole is higher than the first through hole and is communicated with the exhaust hole and the inner cavity of the water tank, the floating body floats upwards to block the first through hole, the inner cavity of the water tank is in a closed state, along with continuous water injection of the water tank, the pressure detector outputs a pressure signal for controlling the water tank to stop water from entering when the pressure in the water tank is increased to be greater than or equal to a first preset value, the first guide piece is influenced by the reset part to be at the lowest position, the second through hole is closed, and when the pressure in the inner cavity of the water tank is increased to be greater than or equal to the second preset value, the first guide piece moves upwards under the action of the pressure and opens the second through hole to relieve the pressure of the water tank.
2. The water tank liquid level control device according to claim 1, wherein the second through hole is formed in a side wall of the second guide member, a third through hole is formed in a side wall of the first guide member, the second through hole is in a closed state when the third through hole is staggered from the second through hole, the second through hole is in an open state when the third through hole corresponds to the second through hole, the first guide member is sleeved with a sealing gasket higher than the third through hole, and the sealing gasket seals the second through hole when the third through hole is staggered from the second through hole.
3. The water tank liquid level control device of claim 1, wherein the first guide member is partially sleeved in the second guide member, the reset component is a spring, the spring is sleeved on the first guide member, the upper end of the spring is abutted against a first limit part arranged on the second guide member or the water tank, and the lower end of the spring is abutted against a second limit part arranged on the first guide member.
4. The water tank liquid level control device according to claim 1, wherein the first guide member is vertically penetrated, the first through hole is positioned in the first guide member, a fourth through hole which is communicated with the first through hole and the inner cavity of the water tank and is lower than the second through hole is arranged on the side wall of the first guide member, the upper end edge of the fourth through hole is higher than the preset highest liquid level of the water tank, the second guide member is vertically penetrated, and the upper end opening of the second guide member is communicated with the exhaust hole.
5. The water tank level control apparatus as set forth in claim 1, wherein said pressure detector is installed inside said water tank and is higher than a preset maximum level of said water tank, and said pressure detector is a pressure sensor.
6. A water tank liquid level control method is characterized in that a floating body is arranged in the water tank, floats upwards along with the rising of the liquid level in the water tank, limits the discharge of gas in the water tank from the exhaust hole when the floating body floats upwards to the highest position, and controls the water tank to stop water inflow or outputs a signal for controlling the water tank to stop water inflow when a pressure detector detects that the pressure in the water tank increases to be greater than or equal to a first preset value; The pressure relief assembly comprises a hollow first guide piece, a hollow second guide piece and a reset part, wherein the first guide piece is provided with a first through hole, the second guide piece is provided with a second through hole, the second guide piece is arranged in the water tank, the first guide piece is sleeved in the second guide piece in a vertically movable mode, the floating body is positioned in the first guide piece, the second through hole is higher than the first through hole and is communicated with the exhaust hole and the inner cavity of the water tank, the floating body floats upwards to block the first through hole, the inner cavity of the water tank is in a closed state, along with continuous water injection of the water tank, the pressure detector outputs a pressure signal for controlling the water tank to stop water from entering when the pressure in the water tank is increased to be greater than or equal to a first preset value, the first guide piece is influenced by the reset part to be at the lowest position, the second through hole is closed, and when the pressure in the inner cavity of the water tank is increased to be greater than or equal to the second preset value, the first guide piece moves upwards under the action of the pressure and opens the second through hole to relieve the pressure of the water tank.
7. A water tank device comprises a water inlet valve and a controller, and is characterized by further comprising a water tank liquid level control device according to any one of claims 1-5, wherein the water outlet end of the water inlet valve is connected with the water inlet of the water tank, the pressure detector and the water inlet valve are respectively electrically connected with the controller, the controller controls the water inlet valve to be closed in time or in time delay when receiving a pressure signal generated by the pressure detector, and controls the water inlet valve to be opened in time or in time delay when the pressure signal of the pressure detector disappears.
8. A sanitary washing device for use in buttocks and/or women's washing, characterized by comprising a water tank device according to claim 7.

Description

Water tank liquid level control device and method, water tank device and sanitary cleaning device Technical Field The invention relates to the field of bathroom, in particular to a water tank liquid level control device and method, a water tank device and a sanitary cleaning device. Background At present, most intelligent toilets are provided with sanitary cleaning devices for washing buttocks and/or women after the user urinates. The conventional sanitary washing device generally includes a spray bar device and a heater, and adopts a pressure stabilizing valve to stabilize the flow of municipal water supply so as to realize stable water pressure. However, the actual situation cannot meet the expectation, because a plurality of uncontrollable factors such as the position and the height of municipal water supply often cause water pressure fluctuation, and the water pressure fluctuation easily causes the temperature of water output by the sanitary cleaning device to suddenly cool or suddenly heat, which seriously affects the user experience. Therefore, the prior art shows a sanitary cleaning device with a water tank, which stores cleaning water by using the water tank to realize an internal active water supply mode, thereby removing the influence of water pressure fluctuation of an external pipeline and improving the experience of a user. The judgment of the liquid level of the water tank mainly depends on the cooperation of a liquid level floater arranged in the water tank and a reed pipe or the detection of the water level of the water tank by adopting a water level detector. However, whether the liquid level float is matched with the reed pipe or the water level sensor is used as a liquid level detector of the water tank, the liquid level detector has the defects of being in contact with liquid, high in sealing performance requirement and high in cost. Disclosure of Invention Aiming at the technical problems existing in the prior art, the invention provides a water tank liquid level control device and method, a water tank device and a sanitary cleaning device, which can control whether the water tank stops water inlet or not by detecting the change of the pressure in the water tank, and the charged component does not need to be in contact with liquid, so that the sealing requirement can be reduced. The technical scheme includes that the water tank liquid level control device comprises a water tank, a floating body and a pressure detector, wherein the water tank is provided with a water inlet, a water outlet and an exhaust hole, the pressure detector is used for detecting the internal pressure of the water tank, the floating body is positioned in the water tank, floats upwards along with the rising of the liquid level in the water tank, limits the gas in the water tank to be exhausted from the exhaust hole when the floating body floats upwards to the highest position, and outputs a pressure signal for controlling the water tank to stop water inlet when the pressure in the water tank is increased to be greater than or equal to a first preset value. The pressure release assembly is positioned in the water tank, is provided with a first through hole and a second through hole which are communicated with the exhaust hole and the inner cavity of the water tank, the second through hole is higher than the first through hole, when the floating body floats to the highest position, the floating body blocks the first through hole, the second through hole is in a closed state, and the pressure in the water tank is continuously increased, and the second through hole is opened for pressure release. Further, the pressure relief assembly comprises a hollow first guide piece, a hollow second guide piece and a reset part, wherein the first guide piece is provided with the first through hole, the second guide piece is provided with the second through hole, the second guide piece is arranged in the water tank, the first guide piece is sleeved in the second guide piece in a vertically movable mode, the floating body is located in the first guide piece, before the pressure in the water tank is continuously increased, the first guide piece is located at the lowest position under the action of the reset part and closes the second through hole, and as the pressure in the water tank is continuously increased, the first guide piece is upwards moved under the action of the pressure in the water tank and opens the second through hole. Further, the second through hole is arranged on the side wall of the second guide piece, a third through hole is arranged on the side wall of the first guide piece, when the third through hole is staggered with the inside and the outside of the second through hole, the second through hole is in a closed state, when the third through hole corresponds to the inside and the outside of the second through hole, the second through hole is in an open state, the first guide piece is sleeved with a sealing gasket h