CN114183693A

CN114183693A - A one-way valve assembly and its hot water circulation system

Info

Publication number: CN114183693A
Application number: CN202111248159.1A
Authority: CN
Inventors: 艾穗江; 黄志飞; 汪为彪
Original assignee: Macro Thermal Energy Technology Co ltd
Current assignee: Macro Thermal Energy Technology Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-15

Abstract

The invention discloses a check valve component which is characterized by comprising a cold water pipe, a hot water pipe, a check valve core, a flow guide element and an elastic collar, wherein a connecting pipe fitting is connected between the cold water pipe and the hot water pipe, the check valve core is arranged on the connecting pipe fitting, the flow direction of water of the check valve core flows from the hot water pipe to the cold water pipe, the cold water pipe is provided with a step hole, and the flow guide element is clamped on the step hole of the cold water pipe. The invention has simple structure and convenient operation.

Description

Check valve component and hot water circulating system thereof

Technical Field

The invention relates to the technical field of water heaters, in particular to a one-way valve assembly of a wall-mounted boiler and a hot water circulating system of the one-way valve assembly.

Background

Many hanging stoves have hot water circulation function in order to realize opening promptly and heat promptly, and hot water circulation function its mainly utilizes the circulating pump to draw back the hanging stove with cold water in the water pipeline and heat, carries into the water pipeline again and circulates, makes always have hot water in the water pipeline through continuous circulation heating, realizes that the user need not to wait for and can supply hot water. However, most of users are old houses, the original old houses are mostly not provided with water return pipes, the wall-mounted boiler with the circulation function is required to be used, only the one-way valve can be used for serving as a circulation loop through the cold water pipe, the one-way valve conducts hot water to the cold water loop in a one-way mode for circulation, and cold water cannot enter a hot water pipeline. By adopting the structure, when a user opens a water using point near the check valve assembly to use cold water under the state of not starting hot water circulation, hot water in a hot water pipeline can be leaked and flowed out through one-way conduction of the check valve, and when the leaked water flow is more than 2.5L/min or 3L/min, the wall-mounted boiler can be started. In order to avoid the situation, a flow limiting valve is usually added at a cold water outlet on the check valve component, so that the water quantity entering a cold water pipe from a hot water pipe is reduced, the wall-mounted stove is prevented from being started by mistake, and the existing check valve component adopts a flow limiting valve structure and is higher in cost.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provides the check valve component which is simple in structure, low in cost and convenient to install and disassemble and can be formed by injection molding.

Another object of the present invention is to provide a hot water circulation system having a simple structure.

The invention adopts the following technical scheme to realize the purpose: a check valve component is characterized by comprising a cold water pipe, a hot water pipe, a check valve core, a flow guide element and an elastic retainer ring, wherein a connecting pipe fitting is connected between the cold water pipe and the hot water pipe, the check valve core is arranged on the connecting pipe fitting, the water flow direction of the check valve core flows from the hot water pipe to the cold water pipe, the cold water pipe is provided with a step hole, and the flow guide element is clamped on the step hole of the cold water pipe.

As a further explanation of the above scheme, the cold water pipe is provided with a cold water inlet and a cold water outlet, the hot water pipe is provided with a hot water inlet and a hot water outlet, and the flow guide element is fixed at the cold water outlet.

Furthermore, one end of the flow guide element is provided with a flange which is fixed on the step hole, the whole hollow water supply flow passes through, when a user needs to use cold water, the cold water needs to flow out through the flow guide element, and the inner caliber of the flow guide element is small, so that the flow guide element has a flow limiting effect, and the phenomenon that the cold water yield is too large is avoided.

Furthermore, the flange plate is correspondingly provided with an elastic collar, and the flow guide element is fixed on the step hole of the cold water pipe through the elastic collar.

Furthermore, a gap is arranged between the flow guide element and the valve wall of the cold water pipe, so that a U-shaped flow guide structure is formed at the end part of the flow guide element, the water quantity entering the cold water pipe from the hot water pipe through the one-way valve is Q1, the water quantity flowing into the one-way valve through the cold water pipe is Q2, and the water flows Q1 and Q2 oppositely flow to form a vortex, and the resistance of entering the cold water pipe from the hot water pipe through the one-way valve is further increased.

A hot water circulation system is characterized in that the one-way valve assembly is used for pumping cold water in a water using pipeline into a wall-mounted boiler through a cold water pipe to be heated in a circulation loop by a circulating pump, then the cold water is conveyed into the water using pipeline to be circulated, hot water is always contained in the water using pipeline through continuous circulating heating, and hot water can be supplied to a user without waiting when the user boils.

Furthermore, in the hot water circulation starting state, the cold water pipe serves as a water return pipe, the lift of a circulating pump arranged in the wall-mounted boiler is small, the circulating water flow is less than 6L/min in the hot water circulation state using the one-way valve assembly, and the water flow channel caused by the flow guide element is reduced without influencing the circulating water flow; in the state that the hot water circulation is not started, when a user uses the cold water, the cold water needs to flow out through the diversion element, the water quantity entering the cold water pipe from the hot water pipe through the check valve assembly is Q1, and the water quantity flowing in through the cold water pipe is Q2, namely: q = Q1+ Q2.

The invention adopts the technical scheme to achieve the beneficial effects.

1. The invention adopts the check valve component as a circulation loop through the cold water pipe, utilizes the circulating pump to pump the cold water in the water using pipeline back to the wall-mounted boiler for heating, then conveys the cold water into the water using pipeline for circulation, and enables the water using pipeline to always have hot water through continuous circulation heating, thereby realizing that the hot water can be supplied without waiting when a user boils, and solving the defect that the wall-mounted boiler is started by mistake because the hot water flows out when the cold water is used in the prior art.

2. The flow guide element can be made of plastic and can be formed by injection molding, so that the cost is low; the flow guide element is convenient to mount and dismount.

Drawings

Fig. 1 is a schematic view of a flow guide element mounting structure according to the present invention.

Fig. 2 is a schematic view of the structure of the check valve assembly of the present invention.

Fig. 3 is a schematic structural view of a flow guide element.

Fig. 4 is a piping layout diagram of a circulation loop using a check valve through a cold water pipe.

Fig. 5 is a schematic diagram of hot water circulation system water flow in a hot water circulation enabled state.

Fig. 6 is a schematic view of water flow when a user uses cold water.

Description of reference numerals: 1. 1-1 parts of cold water pipe, 1-2 parts of stepped hole, 1-3 parts of cold water inlet, 2 parts of cold water outlet, 2-1 parts of hot water pipe, 2-2 parts of hot water inlet, 3 parts of hot water outlet, 4 parts of one-way valve core, 4-1 parts of flow guide element, 5 parts of flange plate, 6 parts of elastic retainer ring and connecting pipe fitting.

Detailed Description

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the feature, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present invention, unless otherwise specified and limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The following describes the embodiments of the present invention with reference to the drawings of the specification, so that the technical solutions and the advantages thereof are more clear and clear. The embodiments described below are exemplary and are intended to be illustrative of the invention, but are not to be construed as limiting the invention.

As shown in fig. 1-6, the invention is a check valve assembly, which comprises a cold water pipe 1, a hot water pipe 2, a check valve core 3, a flow guide element 4 and an elastic collar 5, wherein a connecting pipe fitting 6 is connected between the cold water pipe and the hot water pipe, the check valve core is arranged on the connecting pipe fitting, the water flow direction of the check valve core flows from the hot water pipe to the cold water pipe, the cold water pipe is provided with a step hole 1-1, and the flow guide element is clamped on the step hole of the cold water pipe. The cold water pipe is provided with a cold water inlet 1-2 and a cold water outlet 1-3, the hot water pipe is provided with a hot water inlet 2-1 and a hot water outlet 2-2, and the flow guide element is fixed at the cold water outlet. One end of the flow guide element is provided with a flange plate 4-1 which is hollow as a whole and is used for water flow to pass through, the flange plate is correspondingly provided with an elastic clamping ring 5, and the flow guide element is fixed on a step hole of the cold water pipe through the elastic clamping ring. The diversion element and the valve wall of the cold water pipe are spaced, so that a U-shaped diversion structure is formed at the end part of the diversion element. The flow guide element can be cylindrical, can also be in various shapes such as gourd-shaped, conical and the like, and has the same effect within the protection scope of the patent.

The check valve component is applied to a hot water circulation system, the check valve is used as a circulation loop through a cold water pipe, and the wall-mounted boiler is opened and heated immediately through a hot water circulation function. The hot water circulation function is mainly characterized in that cold water in the water using pipeline is pumped back to the wall-mounted boiler by the aid of the circulating pump to be heated, then the cold water is conveyed into the water using pipeline to be circulated, hot water is always contained in the water pipe by means of continuous circulating heating, and hot water can be supplied to a user without waiting when the user boils. In the state of starting hot water circulation, the cold water pipe serves as a water return pipe; the built-in water pump lift of the wall-mounted boiler is small, the flow of circulating water is generally less than 6L/min under the hot water circulation state using the existing one-way valve assembly, and the flow channel caused by the flow guide element is reduced without influencing the size of the flow of the circulating water.

When a user needs to use cold water in a state that hot water circulation is not started, the cold water needs to flow out through the flow guide element, and the water outlet quantity of the cold water is set to be Q. The flow-guiding element has a small inner caliber and has a flow-limiting function, so that the excessive cold water yield is avoided. When cold water is needed, the water quantity entering the cold water pipe from the hot water pipe through the one-way valve is Q1, and the water quantity flowing into the cold water valve of the one-way valve assembly through the cold water pipe is Q2, namely: q = Q1+ Q2. The water quantity entering the cold water pipe from the hot water pipe through the one-way valve is Q1, and the water flows along with the flow guide element in a U shape, so that the resistance of the flow of Q1 is greatly increased due to the U-shaped flow. At the bottom of the U shape, the water quantity entering the cold water pipe from the hot water pipe through the one-way valve is Q1, the water quantity flowing into the cold water valve of the one-way valve component through the cold water pipe is Q2, and the two water flows of Q1 and Q2 flow oppositely to form a vortex, so that the resistance of entering the cold water pipe from the hot water pipe through the one-way valve is further increased; thereby making Q1 much smaller than Q2.

When a user needs to use cold water, the flow is limited by the flow guide element, and the resistance of the hot water pipe entering the cold water pipe is increased, so that the water quantity entering the cold water pipe from the hot water pipe is reduced, and the wall-mounted boiler is prevented from being started by mistake; the flow guide element can be made of plastic and can be formed by injection molding, so that the cost is low; the flow guide element is convenient to mount and dismount.

Compared with the prior art, the wall-mounted boiler can overcome the defect that the wall-mounted boiler is started by mistake due to the fact that hot water flows out when cold water is used in the prior art, the flow guide element can be made of plastic and can be formed through injection molding, the cost is low, and the wall-mounted boiler is convenient to install and detach.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. A one-way valve assembly, characterized in that it comprises a cold water pipe, a hot water pipe, a one-way valve core, a guide element, an elastic collar, and a connecting pipe is connected between the cold water pipe and the hot water pipe, and the one-way The valve core is arranged on the connecting pipe, the water flow direction of the one-way valve core is from the hot water pipe to the cold water pipe, the cold water pipe has a stepped hole, and the guide element is stuck on the stepped hole of the cold water pipe.

2. The one-way valve assembly according to claim 1, wherein the cold water pipe is provided with a cold water inlet and a cold water outlet, the hot water pipe is provided with a hot water inlet and a hot water outlet, and the guide element is fixed on the Cold water outlet end.

3 . The one-way valve assembly according to claim 1 , wherein one end of the guide element is provided with a flange, the flange is fixed on the stepped hole, and the overall hollow water supply flows through. 4 .

4 . The one-way valve assembly according to claim 1 , wherein the flange plate is correspondingly provided with an elastic collar, and the guide element is fixed on the stepped hole of the cold water pipe through the elastic collar. 5 .

5 . The one-way valve assembly according to claim 1 , wherein there is a space between the flow guide element and the valve wall of the cold water pipe, so that a U-shaped flow guide structure is formed at the end of the flow guide element, and the one-way flow through the one-way The amount of water entering the cold water pipe from the hot water pipe of the valve is Q1, and the amount of water flowing into the one-way valve through the cold water pipe is Q2. The two water flows Q1 and Q2 flow in opposite directions to form a vortex.

6. A hot water circulation system corresponding to the one-way valve assembly according to any one of claims 1-5, characterized in that, it uses the one-way valve assembly as a circulation loop through a cold water pipe, and uses the circulation The pump pumps the cold water in the water pipeline back to the wall-hung boiler for heating, and then transports the water into the water pipeline for circulation. Through continuous circulation heating, there is always hot water in the water pipe, so that the user can supply heat without waiting when the water is boiled. water.

7. The hot water circulation system according to claim 6, characterized in that, when the hot water circulation is enabled, the cold water pipe acts as a return water pipe, and the built-in circulating pump of the wall-hung boiler has a smaller lift. The circulating water flow is less than 6L/min in the water circulation state; when the hot water circulation is not enabled, when the user uses cold water, the cold water needs to flow out through the diversion element, and the water flow from the hot water pipe into the cold water pipe through the one-way valve assembly It is Q1, and the amount of water flowing through the cold water pipe is Q2, Q=Q1+Q2.