A drip-proof water dispenser

Abstract

This utility model discloses a drip-proof water dispenser, including a hot water solenoid valve and a water outlet. A pressure relief component is provided on the pipeline between the hot water solenoid valve and the water outlet. The pressure relief component includes a pressure relief body and is divided into a water chamber and an air chamber by an elastic membrane. The water chamber is used for hot water flow, and the air chamber has an air hole connecting to the atmosphere. This utility model can effectively prevent dripping after the hot water solenoid valve is closed by the reciprocating vibration of the elastic membrane.

Description

Technical Field

[0001] This utility model belongs to the field of drinking water equipment technology, and in particular relates to a drip-proof water dispenser. Background Technology

[0002] Water dispensers are common household appliances. There are water purifiers that purify raw water and heat it before providing it to users, as well as water dispensers that use drinking water as a source and heat it before providing it to users. All of these fall within the scope of this utility model.

[0003] The drawback of this type of water dispenser is that after hot water is used, i.e., after the hot water valve is turned off, a drop or two of water often seeps out from the outlet and drips onto the countertop, causing inconvenience to the user. The applicant's research found that the reason for this phenomenon is that there is a section of pipe between the hot water solenoid valve and the outlet, which is subject to thermal expansion and contraction. When hot water flows through it, its volume increases slightly; when the hot water is turned off, it gradually cools down without a heat source, and its volume decreases slightly, thus "squeezing out" a small amount of water stored in the pipe. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned defects and provide a drip-proof water dispenser.

[0005] This utility model adopts the following technical solution: a drip-proof water dispenser, including a hot water solenoid valve and a water outlet, characterized in that: a pressure relief component is provided on the pipeline between the hot water solenoid valve and the water outlet, the pressure relief component includes a pressure relief component body, which is separated into a water chamber and an air chamber by an elastic membrane, wherein the water chamber is used for the flow of hot water; the air chamber has an air hole connecting to the atmosphere.

[0006] Furthermore, the elastic membrane is located on the cross-section with the largest cross-sectional area inside the pressure relief component, dividing the interior of the component into a water cavity and an air cavity.

[0007] The water cavity has a baffle perpendicular to the water flow direction at one end near the outlet, which partially blocks the water flow.

[0008] The working process of this utility model is as follows: When the hot water solenoid valve opens and water flows out, the water pressure in the pipeline is higher than the air pressure, meaning the water chamber pressure inside the pressure relief component is greater than the air chamber pressure. Since the air chamber is connected to the outside, the elastic diaphragm bulges towards the air chamber side, meaning the water chamber volume is greater than normal. When the hot water solenoid valve closes, the water pressure from the water dispenser's internal pipeline disappears, and the water chamber pressure becomes equal to the air chamber pressure, causing the elastic diaphragm to return to its normal state. However, during the elastic diaphragm's return, this movement has inertia; the elastic diaphragm may bulge towards the air chamber side, then return to bulging towards the water chamber side, and then return to its normal state; it may even vibrate repeatedly several times before returning to its normal state. Due to the excessive return of the elastic diaphragm, some water in the water chamber or pipeline is squeezed out, meaning that after the solenoid valve closes, the water remaining in the pipeline is less than the pipeline volume. This prevents water droplets from being squeezed and dripping during subsequent pipeline cooling.

[0009] The water chamber is equipped with a baffle perpendicular to the direction of water flow, which ensures that the water pressure inside the water chamber increases, resulting in a larger amplitude of bidirectional vibration of the elastic membrane.

[0010] It is evident that this structure of the present invention can effectively prevent water dripping after the hot water solenoid valve is closed. Attached Figure Description

[0011] Figure 1 This is a side view of the pressure relief component.

[0012] Figure 2 yes Figure 1 A sectional view. Detailed Implementation

[0013] See Figure 1 , Figure 2 The pressure relief component in this embodiment includes a body 1, an inlet end 2, and an outlet end 3. The inlet end 2 and the outlet end 3 are connected to the water dispenser's pipeline. After passing through the hot water solenoid valve, the hot water flows through the inlet end 2, the body 1, and the outlet end 3 before being supplied to the user from the water dispenser's outlet.

[0014] The main body 2 is a flat block shape, with a longitudinal elastic membrane 10 inside, which divides the inner cavity of the main body into a water cavity 11 and an air cavity 12. The water cavity 11 is connected to the pipeline through the water inlet 2 and the water outlet 3. The air cavity 12 is connected to the outside through the air hole 13 on the main body. A baffle 14 is provided in the water cavity near the water outlet 3 to partially block the water flow.

Claims

1. A drip-proof water dispenser comprising a hot water solenoid valve, a water outlet, characterized in that: A pressure relief device is installed on the pipeline between the hot water solenoid valve and the water outlet. The pressure relief device includes a pressure relief device body, which is divided into a water chamber and an air chamber that are isolated from each other by an elastic membrane. The water chamber is used to circulate hot water, and the air chamber has an air hole that connects to the atmosphere.

2. The drip-resistant water dispenser of claim 1, wherein: The elastic membrane is located on the cross-section with the largest cross-sectional area inside the pressure relief component, dividing the interior of the component into a water cavity and an air cavity.

3. The drip-resistant water dispenser of claim 1 or 2, wherein: The water cavity has a baffle perpendicular to the water flow direction at one end near the outlet, which partially blocks the water flow.

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