Cross loose joint one-way valve and water heater comprising same

Abstract

The utility model provides a cross loose joint one-way valve and a water heater comprising the same, the cross loose joint one-way valve comprises a valve body, the valve body comprises first valve pipes which are perpendicular to each other, and two opposite sides of the first valve pipes are respectively a hot water inlet and a cold water inlet; the one-way valve is arranged in the first valve pipe, separates the hot water inlet from the cold water inlet and enables water flow to only flow from the hot water inlet to the cold water inlet; the first valve pipe is communicated with the hot water outlet through the hot water port; the hot water port is arranged between the one-way valve and the hot water inlet; the first valve pipe is communicated with the cold water outlet through the cold water port which is arranged between the one-way valve and the cold water inlet. The valve body is simple and small, the size is greatly reduced, installation is convenient, and the part cost is saved. When cold water is used, the back of the one-way valve is not closed, and cold water flows out normally. When hot water is used, water flows from the hot water inlet, flows into the pipeline connected with the hot water faucet through the hot water port and the hot water outlet in front of the one-way valve.

Description

Technical Field

[0001] This utility model relates to the field of valves, and in particular to a cross-shaped check valve and a water heater containing the same. Background Technology

[0002] The demand for gas water heaters with zero-cold-water and pressurization functions is increasing. However, many households install return water pipes for hot water, which is costly. This is where check valves come in. Check valves connect the hot water and cold water pipes. Current technology typically uses a π-shaped check valve, which usually requires two corrugated pipes for both the hot and cold water inlets, resulting in higher costs. They are also bulky, occupying a large space and making installation inconvenient. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of existing one-way valves, which usually require two bellows, resulting in high cost, large size, large footprint, and inconvenient layout. This utility model provides a cross-joint one-way valve and a water heater containing it.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A cross-shaped check valve, comprising:

[0006] The valve body includes a first valve pipe that is perpendicular to each other, with a hot water inlet and a cold water inlet on opposite sides of the first valve pipe, respectively.

[0007] A one-way valve is disposed in the first valve tube, which isolates the hot water inlet and the cold water inlet and allows water to flow only from the hot water inlet to the cold water inlet.

[0008] The first valve pipe is connected to the hot water outlet through a hot water port, and the hot water port is located between the one-way valve and the hot water inlet;

[0009] The first valve pipe is connected to the cold water outlet through a cold water inlet, which is located between the one-way valve and the cold water inlet.

[0010] In this design, the above-mentioned structure is adopted. One end of the valve body is a flexible connector, which can be directly installed on the outlet connector. Therefore, only one bellows is needed to connect to the cold water inlet. It is simple, compact, and significantly reduces the size, making installation easier and saving on component costs. There is a hot water inlet for the flow path when the user uses hot water, and a cold water inlet for the flow path when the user uses cold water. The rear of the one-way valve is not closed, allowing cold water to flow out normally. When using hot water: water flows in from the hot water inlet, passes through the one-way valve, flows into the hot water outlet and then into the pipe connected to the hot water faucet. When using zero cold water circulation: the water pump starts, water flows in from the hot water inlet of the flexible connector, the one-way valve opens, and through the one-way valve, the hot water inlet and then into the cold water pipe, returning to the gas water heater for heating. When using cold water: water flows in from the cold water inlet, and then into the cold water outlet at the rear of the one-way valve.

[0011] Preferably, the valve body further includes a second valve pipe, which is perpendicularly connected to the first valve pipe, and the cold water outlet and / or the hot water outlet is located at one end of the second valve pipe.

[0012] The above-mentioned structural form is adopted in this plan, which is reasonable and easy to arrange.

[0013] Preferably, the two opposite sides of the second valve pipe are a hot water outlet and a cold water outlet, respectively. The second valve pipe is cross-connected with the first valve pipe, and the first valve pipe passes through the second valve pipe and connects to both ends of the second valve pipe through the hot water outlet and the cold water outlet.

[0014] In this solution, the above-mentioned structural form is adopted, which is compact, highly integrated, and the cold water passage and hot water passage do not affect each other under the separation of the one-way valve, resulting in a more reasonable layout.

[0015] Preferably, the hot water inlet is connected to a swivel joint.

[0016] In this solution, the above-mentioned structural form is adopted, which facilitates direct connection with the water supply end.

[0017] Preferably, the cold water inlet is connected to a corrugated pipe.

[0018] Preferably, the one-way valve includes a valve core, a valve seat, and a return spring. The valve core can move toward the cold water inlet under the action of water flow, thereby opening the valve seat and compressing the return spring at the same time.

[0019] Preferably, the cold water inlet is located at the movement position of the valve core and is disposed adjacent to the valve seat.

[0020] In this solution, the above-mentioned structural form is adopted, which makes the structure more compact and ensures that the one-way valve does not affect the flow of cold water.

[0021] Preferably, the edge of the cold water inlet has a rounded chamfer.

[0022] In this solution, the above-mentioned structural form is adopted to ensure that the sealing rubber ring of the valve core is not damaged by the edge of the cold water port when it passes through.

[0023] A water heater comprising a cross-joint check valve as described in any of the preceding claims.

[0024] In this design, the above-mentioned structure is adopted. One end of the cross-shaped check valve body of the water heater is a flexible connector, which can be directly installed on the outlet connector. Therefore, only one bellows pipe is needed to connect to the cold water inlet, making it simple, compact, and significantly reducing its size, facilitating installation and saving on component costs. There is a hot water inlet for the flow path when the user uses hot water, and a cold water inlet for the flow path when the user uses cold water. The rear of the check valve is not sealed, allowing cold water to flow out normally. When using hot water: water flows in from the hot water inlet, passes through the hot water inlet before the check valve, flows into the hot water outlet, and then into the pipe connected to the hot water faucet. When using zero cold water circulation: the water pump starts, water flows in from the hot water inlet of the flexible connector, the check valve opens, and through the check valve, the hot water inlet and cold water inlet enter the cold water pipe back to the gas water heater for heating. When using cold water: water flows in from the cold water inlet, and enters the cold water outlet from the cold water inlet at the rear of the check valve.

[0025] Preferably, the cross-shaped check valve is located at the farthest water outlet of the water pipe of the water heater.

[0026] The positive and progressive effects of this utility model are as follows: In this solution, using the above-mentioned structural form, one end of the valve body of the cross-shaped one-way valve of the water heater is a flexible interface, which can be directly installed on the outlet connector. Therefore, only one bellows is needed to connect to the cold water inlet, making it simple, compact, and significantly reducing the size, facilitating installation, and saving on component costs. There is a hot water inlet for the flow path when the user uses hot water, and a cold water inlet for the flow path when the user uses cold water. The rear of the one-way valve is not closed, allowing cold water to flow out normally. When using hot water: water flows in from the hot water inlet, passes through the hot water inlet before the one-way valve, flows into the hot water outlet and then into the pipe connected to the hot water faucet. When using zero cold water circulation: the water pump starts, water flows in from the hot water inlet of the flexible connector, the one-way valve opens, and through the one-way valve, the hot water inlet and then into the cold water pipe, returning to the gas water heater for heating. When using cold water: water flows in from the cold water inlet, and enters the cold water outlet from the cold water inlet at the rear of the one-way valve. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the external structure of the cross-shaped valve for one-way valve according to an embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram of the internal structure of the cross-shaped valve for one-way valve according to an embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram of the internal structure of the cross-shaped valve check valve after the check valve is removed, according to an embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] First valve tube 1

[0032] Second valve pipe 2

[0033] Hot water inlet 11

[0034] Hot water outlet 13

[0035] Cold water inlet 14

[0036] Hot water outlet 21

[0037] Cold water inlet 12

[0038] Cold water outlet 22

[0039] One-way valve 3 Detailed Implementation

[0040] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0041] like Figures 1 to 3 As shown, this embodiment discloses a cross-shaped one-way valve 3, which is installed at the water outlet. It includes a valve body, which includes a first valve pipe 1 that is perpendicular to each other. The two opposite sides of the first valve pipe 1 are a hot water inlet 11 and a cold water inlet 12, respectively. The one-way valve 3 is disposed in the first valve pipe 1. The one-way valve 3 isolates the hot water inlet 11 and the cold water inlet 12 and allows water to flow only from the hot water inlet 11 to the cold water inlet 12. The first valve pipe 1 is connected to the hot water outlet 21 through the hot water port 13, which is disposed between the one-way valve 3 and the hot water inlet 11. The first valve pipe 1 is connected to the cold water outlet 22 through the cold water port 14, which is disposed between the one-way valve 3 and the cold water inlet 12.

[0042] One end of the valve body is a flexible connector, allowing direct installation on the outlet connector. Therefore, only a single bellows pipe is needed to connect to the cold water inlet, making it simple, compact, and significantly reducing its size, facilitating installation and saving on component costs. A hot water inlet 13 is provided for hot water flow, and a cold water inlet 14 is provided for cold water flow. The rear of the one-way valve 3 is not closed, allowing cold water to flow out normally. When using hot water: water enters through the hot water inlet, flows through the hot water inlet 13 before the one-way valve 3, and then into the pipe connected to the hot water faucet at the hot water outlet 21. When using zero cold water circulation: the water pump starts, and water enters through the hot water inlet 11 of the flexible connector. The one-way valve 3 opens, and the water flows through the hot water inlet 12 and then into the cold water pipe, returning to the gas water heater for heating. When using cold water: water flows in through the cold water inlet 12 and then through the cold water inlet 14 at the rear of the one-way valve 3 to the cold water outlet 22.

[0043] like Figures 1 to 3 As shown, the valve body also includes a second valve pipe 2, which is vertically connected to the first valve pipe 1, and a cold water outlet 22 and / or a hot water outlet 21 are provided at one end of the second valve pipe 2.

[0044] In this embodiment, the valve body includes two intersecting valve pipes with a total of four ports, forming a cold water inlet 12, a cold water outlet 22, a hot water inlet 11, and a hot water outlet 21. The two intersecting valve pipes are connected at the middle of the intersection, resulting in a reasonable structure that is easy to arrange. In this embodiment, the two are connected perpendicularly, which is the most reasonable structure. However, in other embodiments, some angles may exist without affecting the performance.

[0045] like Figures 1 to 3 As shown, the two opposite sides of the second valve pipe 2 are hot water outlet 21 and cold water outlet 22, respectively. The second valve pipe 2 is cross-connected with the first valve pipe 1. The first valve pipe 1 passes through the second valve pipe 2 and connects to both ends of the second valve pipe 2 through the hot water outlet 13 and the cold water outlet 14.

[0046] This embodiment provides a convenient layout structure that is compact, highly integrated, and ensures that the cold water passage and hot water passage do not interfere with each other under the separation of the one-way valve 3, resulting in a more reasonable layout.

[0047] like Figures 1 to 3 As shown, the hot water inlet 11 is connected to a union fitting. The union fitting facilitates direct connection to the water supply. The cold water inlet 12 is connected to a bellows pipe.

[0048] like Figures 1 to 3 As shown, the one-way valve 3 includes a valve core, a valve seat, and a return spring. The valve core can move toward the cold water inlet 12 under the action of water flow and compress the return spring at the same time, making the valve seat open.

[0049] like Figures 1 to 3As shown, the cold water inlet 14 is located at the moving position of the valve core, adjacent to the valve seat. This design results in a more compact structure while ensuring that the check valve 3 does not obstruct the flow of cold water.

[0050] like Figures 1 to 3 As shown, the edge of the cold water inlet 14 has a rounded chamfer. This ensures that the sealing rubber ring of the valve core is not damaged by the edge of the cold water inlet 14 when it passes through.

[0051] This embodiment provides a water heater (not shown in the figure), which includes the cross-shaped one-way valve 3 as described above. One end of the valve body of the cross-shaped one-way valve 3 is a union joint, allowing direct installation on the outlet connector. Therefore, only a bellows connection to the cold water inlet is needed, making it simple, compact, and significantly reducing its size, facilitating installation and saving on component costs. A hot water inlet 13 is provided for the flow path when the user uses hot water, and a cold water inlet 14 is provided for the flow path when the user uses cold water. The rear of the one-way valve 3 is not sealed, allowing cold water to flow out normally. When using hot water: water enters from the hot water inlet, flows through the hot water inlet 13 before the one-way valve 3, and flows into the pipe connected to the hot water outlet 21 and the hot water faucet. When using zero cold water circulation: the water pump starts, water enters from the hot water inlet 11 of the union joint, the one-way valve 3 opens, and through the one-way valve 3, the hot water inlet and cold water inlet 12 enter the cold water pipe and return to the gas water heater for heating. When using cold water: water flows in from the cold water inlet 12 and enters the cold water outlet 22 from the cold water port 14 at the rear of the one-way valve 3.

[0052] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A cross-shaped check valve, characterized in that, It includes: The valve body includes a first valve pipe that is perpendicular to each other, with a hot water inlet and a cold water inlet on opposite sides of the first valve pipe, respectively. A one-way valve is disposed in the first valve tube, which isolates the hot water inlet and the cold water inlet and allows water to flow only from the hot water inlet to the cold water inlet. The first valve pipe is connected to the hot water outlet through a hot water port, and the hot water port is located between the one-way valve and the hot water inlet; The first valve pipe is connected to the cold water outlet through a cold water inlet, which is located between the one-way valve and the cold water inlet.

2. The cross-shaped check valve as described in claim 1, characterized in that, The valve body further includes a second valve pipe, which is perpendicularly connected to the first valve pipe, and the cold water outlet and / or the hot water outlet are located at one end of the second valve pipe.

3. The cross-shaped check valve as described in claim 2, characterized in that, The two opposite sides of the second valve pipe are a hot water outlet and a cold water outlet, respectively. The second valve pipe is cross-connected with the first valve pipe. The first valve pipe passes through the second valve pipe and connects to both ends of the second valve pipe through the hot water outlet and the cold water outlet.

4. The cross-shaped check valve as described in claim 1, characterized in that, The hot water inlet is connected to a flexible joint.

5. The cross-shaped check valve as described in claim 1, characterized in that, The cold water inlet is connected to a corrugated pipe.

6. The cross-shaped check valve as described in claim 1, characterized in that, The one-way valve includes a valve core, a valve seat, and a return spring. The valve core can move toward the cold water inlet under the action of water flow, thereby opening the valve seat and compressing the return spring at the same time.

7. The cross-shaped check valve as described in claim 6, characterized in that, The cold water inlet is located at the movement position of the valve core and is adjacent to the valve seat.

8. The cross-shaped check valve as described in claim 7, characterized in that, The edge of the cold water inlet has a rounded chamfer.

9. A water heater, characterized in that, It includes the cross-shaped check valve as described in any one of claims 1 to 8.

10. The water heater as described in claim 9, characterized in that, The cross-shaped check valve is located at the furthest point of the water supply line of the water heater.

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