KR-20260064152-A - Freeze prevention flush valve

KR20260064152AKR 20260064152 AKR20260064152 AKR 20260064152AKR-20260064152-A

Abstract

The present invention relates to an anti-freeze flush valve, and more specifically, to an anti-freeze flush valve that prevents freezing inside the flush valve by automatically discharging a small amount of water at sub-zero temperatures. According to an embodiment of the present invention, a freeze-prevention flush valve capable of automatically discharging a predetermined amount of water at sub-zero temperatures to prevent freezing comprises: a valve body having an inlet formed on one side and an outlet formed on the lower side; a washing water supply unit provided on the upper side of the valve body, in which washing water introduced through the inlet is stored, and a discharge hole is formed on the lower side to allow the stored washing water to be discharged; an operating rod inserted into the discharge hole and controlling the discharge of washing water according to an angle; a washing water closing unit provided on the upper side of the operating rod inserted into the discharge hole and blocking the discharge of washing water stored in the washing water supply unit; an operating unit provided on the other side of the valve body and pushing the lower end of the operating rod so that washing water can be discharged from the discharge hole upon operation; an operating button provided on the operating unit; and a case unit coupled to the lower part of the valve body and having a predetermined space formed inside. The present invention provides a freeze-prevention flush valve comprising: a spring portion provided inside the case portion and connected to the lower side of the operating rod; wherein, at a temperature above zero, the washing water closing portion closes the discharge port so that water is not discharged through the discharge port, and at a temperature below zero, the spring portion automatically pushes the lower part of the operating rod so that the washing water closing portion and the discharge port are separated, thereby allowing washing water to be discharged through the discharge port.

Inventors

김재일
강대현
최윤호
정예나

Assignees

동아대학교 산학협력단

Dates

Publication Date: 20260507
Application Date: 20241031

Claims (3)

In a freeze-prevention flush valve capable of automatically discharging a predetermined amount of water at sub-zero temperatures to prevent freezing, A valve body having an inlet formed on one side and an outlet formed on the lower side; A washing water supply unit provided on the upper side of the valve body, wherein washing water introduced through the inlet is stored, and a discharge hole is formed on the lower side so that the stored washing water can be discharged; An operating rod inserted into the above discharge hole and controlling the discharge of washing water according to the angle; A washing water blocking part provided on the upper side of the operating rod inserted into the discharge hole to block the discharge of washing water stored in the washing water supply part; An operating part provided on the other side of the valve body and pushing the lower end of the operating rod so that cleaning water can be discharged from the discharge hole when operated; An operation button provided in the above-mentioned operation unit; A case portion coupled to the lower part of the valve body and having a predetermined space formed inside; and It includes a spring portion provided inside the above-mentioned case portion and connected to the lower side of the operating rod; A freeze-prevention flush valve characterized in that, at a temperature above freezing, the washing water closing part closes the discharge port so that water is not discharged through the discharge port, and at a temperature below freezing, the spring part automatically pushes the lower part of the operating rod so that the washing water closing part and the discharge port are separated and washing water is discharged through the discharge port.
In claim 1, A first spring coupling part is formed on one side of the interior of the above case part, and a second spring coupling part is formed on the other side. The above spring part is: A shape memory alloy spring having one end connected to a first spring coupling part and the other end connected to one side of the lower end of the operating rod; and A bias spring having one end connected to a second spring coupling part and the other end connected to the other side of the lower end of the operating rod; A freeze-prevention flush valve characterized by the fact that at sub-zero temperatures, the rigidity of the shape memory alloy spring weakens, thereby causing the bias spring to push the lower end of the operating rod toward the shape memory alloy spring.
In claim 2, A freeze-prevention flush valve characterized by having a clearance adjustment device capable of adjusting clearance between the shape memory alloy spring and the first spring coupling part, and between the bias spring and the second spring coupling part.

Description

Freeze prevention flush valve The present invention relates to an anti-freeze flush valve, and more specifically, to an anti-freeze flush valve that prevents freezing inside the flush valve by automatically discharging a small amount of water at sub-zero temperatures. A flush valve is a valve installed in toilets, urinals, etc., that allows the user to discharge flush water by operating a button. Although these flush valves are widely used in many places, a problem arises where the cleaning water stored inside the valve cools down at sub-zero temperatures during winter, causing the valve to freeze and burst. If the flushing water cools inside the toilet valve or the valve itself freezes and does not operate normally, the flushing water will not be discharged, which will prevent waste from being flushed away, potentially causing severe odors or inconvenience in daily life. Therefore, there is a need to develop a flush valve that prevents freezing issues by ensuring that the cleaning water inside the valve does not cool down at sub-zero temperatures. As a background technology for an invention related thereto, Korean Patent Publication No. 10-2010-0012819 (Inflow water blocking assembly for a flush valve) has been disclosed. The disclosed inflow water blocking assembly for a flush valve comprises: a housing having an inlet, a drain, and first and second mounting portions formed therein; and a flush assembly provided in the second mounting portion of the housing to open and close the drain. The assembly is for shutting off the water supply of a flush valve and comprises: a bolt screw-coupled to the first mounting portion of the housing and having a receiving portion; a sealing member coupled to the bolt; and an opening/closing lifting member coupled to the receiving portion of the bolt. Figures 1 and 2 are drawings showing the configuration of an anti-freeze flush valve according to an embodiment of the present invention. FIG. 3 is a drawing showing the operating rod of an anti-freeze flush valve according to an embodiment of the present invention. FIG. 4 is a diagram showing the operating state of an anti-freeze flush valve at room temperature according to an embodiment of the present invention. FIG. 5 is a diagram showing the operating state of an anti-freeze flush valve at sub-zero temperatures according to an embodiment of the present invention. Hereinafter, various embodiments of this document are described with reference to the accompanying drawings. However, this is not intended to limit the technology described in this document to specific embodiments and should be understood to include various modifications, equivalents, and/or alternatives to the embodiments of this document. In relation to the description of the drawings, similar reference numerals may be used for similar components. In this document, expressions such as "have," "can have," "include," or "can include" refer to the existence of the relevant feature (e.g., numerical values, functions, actions, or components, etc.) and do not exclude the existence of additional features. In this document, expressions such as “A or B,” “at least one of A or/and B,” or “one or more of A or/and B” may include all possible combinations of items listed together. For example, “A or B,” “at least one of A and B,” or “at least one of A or B” may refer to cases including (1) at least one A, (2) at least one B, or (3) both at least one A and at least one B. The terms used in this document are used merely to describe specific embodiments and are not intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as generally understood by those skilled in the art described in this document. Terms used in this document that are defined in general dictionaries may be interpreted as having the same or similar meaning as they have in the context of the relevant technology, and are not to be interpreted in an ideal or overly formal sense unless explicitly defined in this document. In some cases, even terms defined in this document may not be interpreted to exclude the embodiments of this document. It is understood that various modifications can be made by those skilled in the art without departing from the essence of the invention as claimed in the claims of the present invention, and such modifications should not be understood individually from the technical spirit or perspective of the present invention. According to an embodiment of the present invention, in a freeze-prevention flush valve capable of automatically discharging a predetermined amount of water at sub-zero temperatures to prevent freezing, the valve body (10) having an inlet formed on one side and an outlet formed on the lower side; a washing water supply unit (20) provided on the upper side of the valve body (10) to store washing wa