A cold water discharge device and a hair washing machine

Abstract

This utility model discloses a cold water discharge device, characterized in that it includes a normally open solenoid valve connected to a constant temperature water pipe, a multi-way distributor, a normally closed solenoid valve, and a water pump. The normally open solenoid valve and the multi-way distributor are connected by inlet and outlet water pipes, which are connected to a drain pipe. The multi-way distributor is connected to multiple water supply pipes, supplying water to multiple water points. The normally closed solenoid valve and the water pump are sequentially arranged on the drain pipe. When water use is turned off, the normally open solenoid valve closes, the normally closed solenoid valve opens, and the water pump starts, emptying the water stored in the inlet and outlet water pipes, the multi-way distributor, and the water supply pipes. This allows users to directly enjoy warm water upon restarting water use without waiting. This utility model ensures instant hot water at water points, reduces water and energy waste, improves the user experience, and is suitable for scenarios such as hair salons or shampooing for bedridden patients.

Description

Technical Field

[0001] This utility model relates to the field of drainage system technology, and more specifically to a cold water discharge device and a hair washing machine. Background Technology

[0002] Currently, people often need assistance with shampooing before and after haircuts at barbershops, or when they are bedridden due to illness. The most common method involves the user lying in bed with a water basin set up at the head of the bed for manual shampooing, which easily wets the mattress and the user's clothes. To address this, various shampooing machines have emerged in the prior art. For example, Chinese Patent Publication No. CN119302814A discloses a shampooing device for bedridden patients, which includes a head cover with an elastic sealing sleeve connected to the opening. The elastic sealing sleeve consists of a face sealing band and a neck sealing band, with a Velcro fastener on the neck sealing band. Several grippers are evenly arranged on the inner side of the head cover, each gripper including two V-shaped elastic claws and a miniature motor driving the claws to open and close. The shampooing device also includes a power adapter connected to each miniature motor. Water nozzles are evenly distributed on the head cover, and a water chamber is located on the outer side of the head cover, with an inlet and an outlet connected to the water chamber. This patented structure automates hair washing through a head cover, elastic sealing sleeve, a gripper, and a water chamber, reducing manual operation. However, existing hair washing machines typically have multiple water points (such as head cover spray nozzles, shower heads, and water tank nozzles) to meet the cleaning needs of multiple areas, and each water point is connected to the thermostat via independent pipelines. When the equipment is not in use, a certain amount of cold water remains in the pipelines; when restarting, this cold water must be drained before hot water can be obtained, which not only wastes water and energy resources but also prolongs the user's waiting time and reduces the user experience. Therefore, there is an urgent need for a device that can quickly drain the residual cold water in the pipelines to solve the problem of existing hair washing machines being "instantly hot but not instantly hot." Summary of the Invention

[0003] The purpose of this invention is to provide a stable and reliable cold water discharge device that can provide instant hot water at water points, in order to overcome the shortcomings of existing technologies.

[0004] Another objective of this invention is to provide a hair washing machine.

[0005] This utility model achieves the above-mentioned objective by adopting the following technical solution: a cold water discharge device, characterized in that it includes a normally open solenoid valve connected to a constant temperature water pipe, a multi-way distributor, a normally closed solenoid valve, and a water pump. The normally open solenoid valve and the multi-way distributor are connected by inlet and outlet water pipes, which are connected to a drain pipe. The multi-way distributor is connected to multiple water supply pipes, supplying water to multiple water points respectively. The normally closed solenoid valve and the water pump are sequentially arranged on the drain pipe. When water use is turned off, the normally open solenoid valve closes, the normally closed solenoid valve opens, and the water pump starts, emptying the water stored in the inlet and outlet water pipes, the multi-way distributor, and the water supply pipes, so that when water use is restarted, the user can directly enjoy warm water without waiting.

[0006] As a further explanation of the above solution, a shower head is connected between the thermostatic water pipe and the normally open solenoid valve. The shower head itself has an independent switch, which outputs thermostatic hot water directly when turned on, and is suitable for auxiliary rinsing.

[0007] Furthermore, the inlet and outlet water pipes are first connected to the normally closed solenoid valve, and then to the water pump.

[0008] Furthermore, the multi-channel water distributor is connected to the head cover water supply pipeline, which is connected to the head cover of the shampoo machine.

[0009] Furthermore, the multi-channel water distributor connects to multiple water supply lines to the sink, with each water supply line corresponding to a water spray nozzle, which is installed on the inner wall of the shampoo machine's sink.

[0010] Furthermore, the inlet of the thermostatic water pipe is connected to a thermostat, and the water temperature inside the thermostatic water pipe is controlled at 35-40℃, which is within the comfortable temperature range for the human body.

[0011] Furthermore, each water supply pipeline is equipped with a valve, which can independently control the opening / closing of the corresponding water point to meet the needs of different hair washing scenarios.

[0012] A hair washing machine is characterized in that it includes a frame, a head cover, a thermostat connected to a water heater, and a cold water discharge device connected between the thermostat and multiple water points to realize the automatic drainage of residual cold water in the pipeline.

[0013] The beneficial effects that this utility model can achieve by adopting the above-mentioned technical solution are:

[0014] This utility model employs a cold water discharge structure for a hair washing machine, primarily composed of a normally open solenoid valve connected to a constant temperature water pipe, a multi-way distributor, a normally closed solenoid valve, and a water pump. The normally open solenoid valve and the multi-way distributor are connected by inlet and outlet water pipes, which in turn are connected to a drain pipe. The multi-way distributor connects to multiple water supply pipes, supplying water to multiple water points. The normally closed solenoid valve and water pump are sequentially installed on the drain pipe. When water usage is turned off, the normally open solenoid valve closes, the normally closed solenoid valve opens, and the water pump starts, emptying the water stored in the inlet and outlet water pipes, as well as the multi-way distributor and water supply pipes. This allows users to directly enjoy warm water upon restarting the machine, without waiting, thus improving the user experience. It also saves water and energy, avoiding cold water waste and reducing water and heating energy consumption. Furthermore, it is flexible and reliable, supporting independent control of multiple water points to adapt to different hair washing needs. The coordinated operation of the solenoid valve and water pump achieves automated drainage with high stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the shampoo machine of this utility model.

[0016] Figure 2 This is a schematic diagram of the waterway connection structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the headgear installation structure.

[0018] Explanation of reference numerals in the attached diagram: 1. Thermostatic water pipe; 2. Normally open solenoid valve; 3. Multi-way water distributor; 4. Normally closed solenoid valve; 5. Water pump; 6. Controller; 7. Wastewater collection device; 8. Inlet and outlet water pipes; 9. Drainage pipe; 10. Water supply pipe; 10-1. Headgear water supply pipe; 10-2. Water tank water supply pipe; 11. Point of use; 12. Thermostat; 13. Shower head; 14. Headgear spray structure; 15. Spray nozzle; 16. Frame; 17. Headgear; 18. Water tank. Detailed Implementation

[0019] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature, and in this description of the utility model, "at least" means one or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In this utility model, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings, making the technical solution and beneficial effects of this utility model clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] like Figures 1-3As shown, this utility model is a cold water discharge device, including a normally open solenoid valve 2 connected to a constant temperature water pipe 1, a multi-way water distributor 3, a normally closed solenoid valve 4, a water pump 5, a controller 6, a wastewater collection device 7, inlet and outlet water pipes 8, a drainage pipe 9, and multiple water supply pipes 10. A normally open solenoid valve 2, with its input end connected to the thermostatic water pipe 1, is used to control the on / off state of the thermostatic hot water. A multi-way distributor 3, connected to the output end of the normally open solenoid valve 2 via inlet and outlet water pipes 8, is used to distribute hot water to multiple water points 11. A drain pipe 9, with one end connected to the inlet and outlet water pipes 8 (between the normally open solenoid valve 2 and the multi-way distributor 3), leads to a wastewater collection device at the other end. A normally closed solenoid valve 4 and a water pump 5 are sequentially connected in series on the drain pipe 9 along the drainage direction. The normally closed solenoid valve 4 controls the on / off state of the drain pipe 9, and the water pump 5 provides drainage power. A water supply pipe 10, with one end connected to the multi-way distributor 3, and the other end connected to multiple water points 11 of the shampoo machine. A thermostat 12 is connected to the input end of the thermostatic water pipe 7, and the thermostat 12 is connected to the water heater to stably control the water temperature at 38℃. The controller 6 is electrically connected to the normally open solenoid valve 2, normally closed solenoid valve 4, water pump 5, and the switches of each water point. When all water points are detected to be closed, the drainage process is automatically triggered (controlling the normally open solenoid valve to close, the normally closed solenoid valve to open, and the water pump to start at a preset time). The controller 6 uses an STM32F103 series microcontroller chip, which features high performance and low power consumption, and its rich I / O interfaces can meet the control needs of multiple devices. The controller 6 is connected to the normally open and normally closed solenoid valves via relays. When it is necessary to control the solenoid valve, the controller sends a control signal to the relay, which correspondingly connects or disconnects the power supply to the solenoid valve, realizing the on / off control of the solenoid valve. For the water pump, the controller 6 outputs a PWM signal to the water pump drive circuit to adjust the pump speed, thereby controlling the drainage rate. A higher speed can be used in the initial drainage stage to quickly discharge most of the residual water, and the speed is reduced in the later stages to ensure that the water in the pipeline is completely emptied. The switch status of each water point is transmitted to the controller via an optocoupler. The optocoupler provides electrical isolation to prevent external interference signals from affecting the normal operation of the controller. When the controller detects that all water points are in the off state, it initiates the drainage process.

[0025] Its working principle is as follows: When the water point is turned on, the normally open solenoid valve remains open, and the normally closed solenoid valve is closed. The constant temperature hot water is delivered to the water point through the normally open solenoid valve, inlet and outlet water pipes, multi-way distributor, and water supply pipes. When the water point is turned off, the normally open solenoid valve closes to cut off the hot water supply. At the same time, the normally closed solenoid valve opens and the water pump starts to discharge the residual cold water in the inlet and outlet water pipes, multi-way distributor, and each water supply pipe through the drain pipe to ensure that there is no cold water residue in the pipes when it is turned on again.

[0026] A shower head 13 can also be connected in parallel between the thermostatic water pipe 7 and the normally open solenoid valve 2. The shower head 13 has its own independent switch, which directly outputs thermostatic hot water when it is turned on, and is suitable for auxiliary rinsing.

[0027] The connection point between the inlet / outlet water pipe 8 and the drain pipe 9 is located between the output end of the normally open solenoid valve 2 and the input end of the multi-way water distributor 3, ensuring that the drainage can cover all pipes from the water distributor to each water point.

[0028] The water supply pipeline 10 includes: a head cover water supply pipeline 10-1, connected to the head cover spray structure 14 of the shampoo machine; and at least one water tank water supply pipeline 10-2, each water tank water supply pipeline being connected to a spray nozzle 15 on the inner wall of the water tank of the shampoo machine. Each water supply pipeline is equipped with a valve, which can independently control the opening / closing of the corresponding water point to adapt to different shampooing scenarios.

[0029] The following is a shampoo machine using the aforementioned cold water discharge device. Structurally, it includes a frame 16, a head cover 17, a water tank 18, a thermostat 12, and multiple water points 11 (such as a head cover spray structure, a water tank spray nozzle, and a shower head) mounted on the frame 16. The thermostat input is connected to a water heater, and the output is connected to each water point through the aforementioned cold water discharge device to achieve automatic drainage of residual cold water in the pipeline.

[0030] Compared with existing technologies, this technical solution offers several advantages: Instant hot water: The drainage device empties cold water from the pipes when the machine is stopped, allowing hot water to be output directly the next time it's used, eliminating waiting time and improving user experience; Water and energy saving: It avoids cold water waste and reduces water and heating energy consumption; Flexible and reliable: It supports independent control of multiple water points, adapting to different shampooing needs, and achieves automated drainage through the cooperation of solenoid valves and water pumps, ensuring high stability; Simple structure: It requires only a few additional components on the existing shampoo machine, making it easy to modify and integrate.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A cold water discharge device, characterized in that, It includes a normally open solenoid valve connected to a constant temperature water pipe, a multi-way distributor, a normally closed solenoid valve, and a water pump. The normally open solenoid valve and the multi-way distributor are connected by inlet and outlet water pipes, which are connected to drainage pipes. The multi-way distributor is connected to multiple water supply pipes to supply water to multiple water points. The normally closed solenoid valve and the water pump are sequentially installed on the drainage pipe. When water is turned off, the normally open solenoid valve closes, the normally closed solenoid valve opens, and the water pump starts to drain the water stored in the inlet and outlet water pipes, as well as the multi-way distributor and water supply pipes.

2. A cold water discharge device according to claim 1, characterized in that A shower head is connected between the thermostatic water pipe and the normally open solenoid valve, and the shower head itself has an independent switch.

3. A cold water discharge device according to claim 1, characterized in that The inlet and outlet water pipes are first connected to the normally closed solenoid valve, and then to the water pump.

4. A cold water discharge device according to claim 1, characterized in that The multi-channel water distributor is connected to the head cover water supply line, which is connected to the head cover of the shampoo machine.

5. A cold water discharge device according to claim 1, characterized in that The multi-channel water distributor connects to multiple water supply lines to the shampoo tubs. Each water supply line corresponds to a water spray nozzle, which is installed on the inner wall of the shampoo tub.

6. A cold water discharge device according to claim 1, characterized in that The inlet of the thermostatic water pipe is connected to a thermostat, and the water temperature inside the pipe is controlled at 35-40℃.

7. A cold water discharge device according to claim 1, characterized in that Each water supply pipeline is equipped with a valve to independently control the opening / closing of the corresponding water point.

8. A hair washing machine characterized by It includes a frame, a cover, and a thermostat connected to a water heater. The thermostat is connected to multiple water points by a cold water discharge device as described in any one of claims 1-7, which realizes the automatic drainage of residual cold water in the pipeline.

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