CN111735210B

CN111735210B - Circulating valve and circulating water heater comprising same

Info

Publication number: CN111735210B
Application number: CN202010611626.1A
Authority: CN
Inventors: 沈文权; 朱海龙; 肖晓艳
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-08-20
Anticipated expiration: 2040-06-29
Also published as: CN111735210A

Abstract

The invention discloses a circulating valve and a circulating water heater comprising the same, wherein the circulating valve comprises a body, a cold water port, a water return port and a water outlet are arranged on the body, and the cold water port is respectively communicated with the water return port and the water outlet; a flexible membrane, a first side of the flexible membrane being in communication with the cold water port, a second side of the flexible membrane being in communication with the atmosphere; a sealing member connected to the flexible film, the sealing member moving between a first position and a second position along with the deformation of the flexible film, wherein, in the first position, the sealing member is used for the outward passage of the water return port; in the second position, the sealing member opens an outward passage of the water return port. According to the invention, the circular opening and closing of the water return pipeline are automatically realized in a self-deformation mode of the flexible membrane, so that the temperature of inlet water is prevented from being increased due to the fact that hot water is pumped back to the water heater, the pressurization effect is improved, and the temperature control of the hot water is more accurate.

Description

Circulating valve and circulating water heater comprising same

Technical Field

The invention relates to a circulating valve and a circulating water heater comprising the same.

Background

At present, the circulating water heater without a return pipe has the main function of pumping cold water in a pipeline back to the water heater by using a circulating pump for heating, so that a user can use hot water as soon as boiling water. When the circulating pump is used for pressurizing the water flow, the pressurizing effect is not obvious due to the influence of the circulating loop. When hot water is opened by a water point, cold water enters the water heater, the circulating pump is opened at the moment, and due to the fact that a water return path exists, a part of hot water is pumped back to the water heater through the water return path, the pressurization effect is not obvious, the hot water discharged by the water point is increased a little, and meanwhile, the temperature of inlet water is increased due to the fact that a part of hot water is pumped back to the water heater, and the temperature control of the water heater is affected.

Disclosure of Invention

The invention aims to solve the technical problem that in the prior art, partial hot water is pumped back to a water heater to cause the temperature of inlet water to be high, so that the pressurization is not obvious and the temperature control of the hot water is influenced. The defect of (2) provides a circulation valve and a circulation water heater comprising the same.

The invention solves the technical problems through the following technical scheme:

a circulation valve, characterized in that it comprises

The water cooling device comprises a body, a water inlet, a water outlet and a water outlet, wherein the body is provided with a water cooling opening, a water return opening and the water outlet, and the water cooling opening is respectively communicated with the water return opening and the water outlet;

a flexible membrane, a first side of the flexible membrane being in communication with the cold water port, a second side of the flexible membrane being in communication with the atmosphere; the flexible membrane may be a membrane or other flexible material capable of being deformed.

A sealing member connected to the flexible film, the sealing member moving between a first position and a second position as the flexible film is deformed, wherein in the first position, the sealing member blocks an outward passage of the return water port; in the second position, the sealing member opens an outward passage of the water return port.

In the scheme, the second side of the flexible membrane is at atmospheric pressure and keeps basically unchanged; the first side of flexible membrane is the water pressure of this internal pipeline, and when opening with the water spot, thereby the delivery port switch-on supplies water and makes the water pressure of this internal pipeline balanced with external atmosphere to make the flexible membrane drive the sealing member and seal up the return water mouth, the water in the return water pipeline that blocks water returns the water heater, thereby realizes the pressure boost, and the flow of play water spot obviously increases. When closing with the water spot, the delivery port seals the water pressure that makes this internal pipeline increase to thereby make flexible membrane drive sealing member remove and open the return water mouth, make the return water pipeline be in the open mode from this.

This scheme is through the mode of the self deformation of flexible membrane, has realized opening and closing of the circulation of return water pipeline automatically, from this, has avoided hot water to take out the temperature that the water heater leads to intaking and has become high, improves the pressure boost effect for hydrothermal temperature control is more accurate.

Preferably, when the pressures on the two sides of the flexible membrane are balanced, the flexible membrane drives the sealing element to move to a first position; when the pressure of the first side of the flexible membrane is larger than that of the second side, the flexible membrane bulges towards the second side and drives the sealing element to move to the second position.

Preferably, the inner side of the body is provided with a connecting channel, the connecting channel is positioned on a passage from the water return port to the water outlet, and in the first position, the sealing element blocks the connecting channel; in the second position, the seal opens the connecting passage. Thereby, the connection passage cooperates with the sealing member to function as opening and closing of the outward passage of the water return port.

Preferably, the body has a resilient element inside, which bears against the seal and provides a resilient force to move the seal towards the first position. The resilient element acts as a restoring force, providing an additional restoring force urging the seal towards said first position in case of a pressure balance across the flexible membrane, avoiding a situation in which the seal is not active.

Preferably, the flexible membrane is arranged below the sealing element, wherein in the first position the sealing element closes off an upper opening of the connection channel. The arrangement is that the gravity of the sealing element is used as an additional restoring force, and under the condition that the pressure on two sides of the flexible membrane is balanced, the additional restoring force is provided to urge the sealing element to move towards the first position, so that the condition that the sealing element does not act is avoided.

Preferably, the sealing member includes a stem connected to the flexible membrane and a sealing end for opening or closing the connection passage.

Preferably, a blocking part is arranged on a passage from the cold water port to the water return port, wherein a middle channel and the connecting channel are arranged on the blocking part, and the valve rod penetrates through the middle channel and slides in the middle channel. The valve rod is provided by the blocking part, the size of the outward passage of the water return port can be reduced, and timely closing and opening are facilitated.

Preferably, the connecting channel is annular, and the connecting channel is disposed around the outside of the connecting channel. The annular connecting channel is uniformly contacted with the sealing end, and the stress balance of the sealing end can be ensured, so that the inclination phenomenon of the valve rod relative to the middle channel is reduced, the smoothness of the movement of the valve rod is improved, and the valve rod is prevented from being blocked.

Preferably, the body has a first open opening and a second open opening, wherein the first open opening and the second open opening face opposite to each other, the first open opening is communicated with the cold water port, the flexible film covers the first open opening, the second open opening is sealed, and the valve rod passes through the second open opening. The arrangement of the sealing element is facilitated by the arrangement of the first open opening and the second open opening, so that the valve rod of the sealing element can be arranged in the linear direction, the structure of the sealing element is more compact, and the risk of the valve rod being blocked movably is reduced.

Preferably, the first open port, the second open port and the connecting channel are aligned with each other. From this, further make the valve rod can be holistic straight-bar, can not produce the motion dead angle in the direction of motion of valve rod, further avoided the card of valve rod to die.

Preferably, the body includes a bypass passage, wherein the bypass passage is respectively communicated with the cold water port, the water outlet and the water return port, and wherein the bypass passage is laterally connected between the first open port and the cold water port. The bypass channel connected to the side can prevent cold water from directly rushing into the passage between the water outlet and the water return port.

Preferably, the bypass channel is laterally connected between the second opening and the connecting channel. The bypass channel that the side was inserted can avoid rivers direct impact the second to open the mouth, also can make to have circuitous pipeline between delivery port, return water mouth and the cold water mouth, reduces and strikes.

Preferably, the second opening is sealed by a sealing unit, and the valve rod and the sealing unit are arranged in a sealing mode.

Preferably, the valve rod comprises a first rod part and a second rod part, wherein the first rod part is connected with the flexible membrane, the second rod part penetrates through the sealing unit and is connected with the sealing end, and the first rod part and the second rod part are detachably connected. The convenience of mounting and dismounting can be improved by the segmented first rod part and the second rod part. Wherein, in the second pole portion and the sealed end of packing into from the return water mouth, the sealed end is stayed one side of separation portion, and sealed unit can be worn out to the second pole portion, and the first pole portion that is located the outside just can swiftly be connected with the second pole portion.

Preferably, the first rod part and the second rod part are connected by mutual attraction of magnetic elements. The magnetic element can make the connection and the disconnection of the first rod part and the second rod part simpler and more convenient.

A hydronic water heater, characterized in that it comprises said circulation valve.

Preferably, the circulating water heater comprises a heating element, a cold water inlet, a backwater inlet and a hot water inlet, wherein the backwater inlet is connected with the backwater inlet, the cold water inlet is connected with the cold water inlet, one end of the heating element is connected to the water outlet, and the other end of the heating element is connected to the hot water inlet.

The positive progress effects of the invention are as follows: according to the invention, the circular opening and closing of the water return pipeline are automatically realized in a self-deformation mode of the flexible membrane, so that the temperature of inlet water is prevented from being increased due to the fact that hot water is pumped back to the water heater, the pressurization effect is improved, and the temperature control of the hot water is more accurate.

Drawings

FIG. 1 is a schematic view of a seal of a circulation valve in a first position in accordance with a preferred embodiment of the present invention.

FIG. 2 is a schematic view of a seal of a circulation valve in a second position in accordance with a preferred embodiment of the present invention.

Fig. 3 is a schematic view of a barrier structure according to a preferred embodiment of the invention.

FIG. 4 is a schematic connection diagram of a circulation water heater according to a preferred embodiment of the present invention.

Fig. 5 is an enlarged schematic view of a portion a in fig. 4.

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

As shown in fig. 1-5, the present embodiment discloses a circulation valve 1, and as shown in fig. 1 and 2, the circulation valve 1 includes a body 10, the body 10 is provided with a cold water port 11, a water return port 13, and a water outlet 12, and the cold water port 11 is respectively communicated with the water return port 13 and the water outlet 12.

As shown in fig. 1 and 2, the circulation valve 1 of the present embodiment further includes a flexible membrane 3, a first side of the flexible membrane 3 is communicated with the cold water port 11, and a second side of the flexible membrane 3 is communicated with the atmosphere; the flexible membrane 3 may be a membrane or other flexible material that is deformable.

As shown in fig. 1 and 2, the circulation valve 1 of the present embodiment further includes a sealing member 2, the sealing member 2 is connected to the flexible film 3, and the sealing member 2 moves between a first position and a second position along with the deformation of the flexible film 3, wherein in the first position, the sealing member 2 blocks the outward path of the return water port 13; in the second position, the sealing member 2 opens the outward passage of the return water port 13.

In the life private standing, the second side of the flexible film 3 is at atmospheric pressure and keeps basically unchanged; the first side of flexible membrane 3 is the water pressure of the pipeline in the body 10, and when opening with water point 6, thereby delivery port 12 switch-on supplies water and makes the water pressure of the pipeline in the body 10 balanced with external atmosphere to make flexible membrane 3 drive sealing member 2 and seal return water mouth 13, the water in the return water pipeline 8 that blocks water gets back to water heater 5, thereby realizes the pressure boost, and the flow of play water point obviously increases. When the water consumption point 6 is closed, the water outlet 12 is closed so that the water pressure of the pipeline in the body 10 is increased, thereby causing the flexible membrane 3 to drive the sealing member 2 to move so as to open the water return port 13, thereby causing the water return pipeline 8 to be in an open state.

This embodiment is through the mode that flexible membrane 3's self warp, has realized opening and closing of the circulation of return water pipeline 8 automatically, from this, has avoided hot water to take out water heater 5 and has leaded to the temperature of intaking to rise, improves the pressure boost effect for hot water temperature control is more accurate.

As shown in fig. 1, when the pressures on the two sides of the flexible membrane 3 are balanced, the flexible membrane 3 drives the sealing element 2 to move to the first position; as shown in fig. 2, when the pressure on the first side of the flexible membrane 3 is greater than the pressure on the second side, the flexible membrane 3 bulges towards the second side and brings the sealing element 2 to move to the second position.

As shown in fig. 1-3, the body 10 of the present embodiment has a connecting channel 171 inside, the connecting channel 171 is located on the path from the water return opening 13 to the water outlet opening 12, and in the first position, the sealing member 2 blocks the connecting channel 171; in the second position, the seal 2 opens the connecting channel 171. Thereby, the connection passage 171 is engaged with the sealing member 2, and functions to open and close the outward passage of the return water port 13.

As shown in fig. 1 and 2, the flexible membrane 3 of the present embodiment is disposed below the sealing member 2, wherein in the first position, the sealing member 2 blocks the upper opening of the connecting passage 171. The arrangement is such that the weight of the sealing member 2 itself acts as an additional restoring force, providing the additional restoring force to urge the sealing member 2 to move towards the first position in the event of a pressure balance across the flexible membrane 3, avoiding the situation where the sealing member 2 is not in operation.

In other embodiments it is also possible to provide the body 10 with a resilient element inside, which is pressed against the seal 2 and provides a resilient force that moves the seal 2 towards the first position. The resilient element acts as a restoring force, providing an additional restoring force to urge the sealing member 2 towards the first position in case of a pressure balance across the flexible membrane 3, avoiding a situation in which the sealing member 2 is not active.

As shown in fig. 1 and 2, the packing 2 of the present embodiment includes a stem 21 connected to the flexible film 3, and a sealing end 22 for opening or closing the connection passage 171.

As shown in fig. 1-3, a blocking portion 17 is disposed on a path from the cold water inlet 11 to the water return inlet 13, wherein the blocking portion 17 is provided with a middle channel 172 and a connecting channel 171, and the valve rod 21 passes through the middle channel 172 and slides in the middle channel 172. The blocking part 17 provides a passing channel of the valve rod 21, and simultaneously, the size of an outward passage of the water return port 13 can be reduced, thereby being beneficial to timely closing and opening.

As shown in fig. 1 to 3, the connecting channel 171 of the present embodiment has a ring shape, and the connecting channel 171 is disposed around the outside of the connecting channel 171. The annular connecting channel 171 is uniformly contacted with the sealing end 22, so that the stress balance of the sealing end 22 can be ensured, the inclination phenomenon of the valve rod 21 relative to the middle channel 172 is reduced, the moving smoothness of the valve rod 21 is improved, and the valve rod 21 is prevented from being blocked.

As shown in fig. 1 and fig. 2, the body 10 of the present embodiment has a first open opening 15 and a second open opening 16, wherein the first open opening 15 and the second open opening 16 face to each other, the first open opening 15 is communicated with the cold water port 11, the flexible film 3 covers the first open opening 15, the second open opening 16 is disposed in a sealing manner, and the valve stem 21 passes through the second open opening 16. The arrangement of the first open opening 15 and the second open opening 16 is beneficial to the arrangement of the sealing element 2, so that the valve rod 21 of the sealing element 2 can be arranged in a linear direction, the structure of the sealing element 2 is more compact, and the risk of the valve rod 21 being locked in motion is reduced.

As shown in fig. 1 and 2, the first open hole 15, the second open hole 16 and the connecting channel 171 of the present embodiment are aligned with each other. Therefore, the valve rod 21 can be an integral straight rod, no movement dead angle is generated in the movement direction of the valve rod 21, and the valve rod 21 is further prevented from being blocked.

As shown in fig. 1 and 2, the body 10 of the present embodiment includes a bypass channel 14, wherein the bypass channel 14 is respectively communicated with the cold water port 11, the water outlet 12 and the water return port 13, and the bypass channel 14 is laterally connected between the first open port 15 and the cold water port 11. The bypass channel 14 which is connected laterally can prevent cold water in the cold water port 11 from directly rushing into a passage between the water outlet 12 and the water return port 13.

As shown in fig. 1 and 2, the bypass duct 14 of the present embodiment is interposed between the second open opening 16 and the connecting duct 171 from the side. The bypass channel 14 connected to the side can prevent water flow from directly impacting the second open port 16, and can also enable a circuitous pipeline to be arranged among the water outlet 12, the water return port 13 and the cold water port 11, so that impact is reduced.

As shown in fig. 1 and 2, the second open hole 16 of the present embodiment is sealed by the sealing unit 4, and the valve stem 21 is sealingly disposed between the sealing unit 4.

As shown in fig. 1 and 2, the valve stem 21 of the present embodiment includes a first stem portion 211 and a second stem portion 212, wherein the first stem portion 211 is connected to the flexible film 3, the second stem portion 212 passes through the sealing unit 4 and is connected to the sealing end 22, and the first stem portion 211 and the second stem portion 212 are detachably connected to each other. The convenience of mounting and dismounting can be improved by the segmented first and

second lever portions

211 and 212. Among the second rod part 212 and the seal end 22 loaded from the water return port 13, the seal end 22 is left on one side of the blocking part 17, the second rod part 212 can penetrate out of the sealing unit 4, and the first rod part 211 located on the outer side can be quickly connected with the second rod part 212.

As shown in fig. 1 and 2, the first rod portion 211 and the second rod portion 212 of the present embodiment are connected by attracting each other through the magnetic element 23. The attachment and detachment of the first pole part 211 and the second pole part 212 can be made easier by the magnetic member 23.

As shown in fig. 4 and 5, the present embodiment further includes a circulation water heater 5, and the circulation water heater 5 includes a circulation valve 1. The circulating water heater 5 comprises a circulating pump 55, a heating element 54, a cold water inlet 51, a backwater inlet 53 and a hot water inlet 52, wherein the backwater inlet 13 is connected with the backwater inlet 53, the cold water inlet 11 is connected with the cold water inlet 51, one end of the heating element 54 is connected with the water outlet 12, and the other end of the heating element is connected with the hot water inlet 52. The cold water inlet 51 is connected to the cold water pipeline 7, the hot water inlet 52 is connected to the water return pipeline 8, and the water consumption point 6 is connected to the cold water pipeline 7 and the water return pipeline 8.

According to the invention, the circular opening and closing of the water return pipeline are automatically realized in a self-deformation mode of the flexible membrane, so that the temperature of inlet water is prevented from being increased due to the fact that hot water is pumped back to the water heater, the pressurization effect is improved, and the temperature control of the hot water is more accurate.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A circulation valve, characterized in that it comprises

a flexible membrane, a first side of the flexible membrane being in communication with the cold water port, a second side of the flexible membrane being in communication with the atmosphere;

2. The circulation valve of claim 1, wherein the flexible membrane entrains the seal to move to a first position when pressure is balanced across the flexible membrane; when the pressure of the first side of the flexible membrane is larger than that of the second side, the flexible membrane bulges towards the second side and drives the sealing element to move to the second position.

3. The circulation valve of claim 1, wherein the body has a connecting passage on an interior side thereof, the connecting passage being located on a path from the return port to the outlet port, the sealing member blocking the connecting passage in the first position; in the second position, the seal opens the connecting passage.

4. The circulation valve of claim 3, wherein the body has a resilient element inside the body that bears against the seal and provides a resilient force that moves the seal toward the first position.

5. The circulation valve of claim 3, wherein the flexible membrane is disposed below the seal, wherein in the first position, the seal blocks an upper opening of the connection passage.

6. The circulation valve of claim 3, wherein the seal comprises a stem coupled together and a sealing end, wherein the stem is coupled to the flexible membrane and the sealing end is configured to open or close the connection passage.

7. The circulation valve of claim 6, wherein a blocking portion is disposed on a path from the cold water inlet to the return water inlet, wherein a middle channel and the connecting channel are disposed on the blocking portion, and the valve stem passes through the middle channel and slides in the middle channel.

8. The circulation valve of claim 7, wherein the connecting channel is annular in shape and is circumferentially disposed outside of the connecting channel.

9. The circulation valve of claim 6, wherein the body has a first open port and a second open port, wherein the first open port and the second open port face opposite each other, the first open port communicates with the cold water port, and the flexible membrane covers the first open port, the second open port is sealingly disposed, and the valve stem passes through the second open port.

10. The circulation valve of claim 9, wherein the first open port, the second open port, and the connecting channel are aligned with one another.

11. The circulation valve of claim 9, wherein the body comprises a bypass channel, wherein the bypass channel communicates with the cold water port, the water outlet, and the water return port, respectively, wherein the bypass channel is laterally interposed between the first open port and the cold water port.

12. The circulation valve of claim 11, wherein the bypass passage opens laterally between the second open port and the connecting passage.

13. The circulation valve of claim 9, wherein the second open port is sealed by a sealing unit, and wherein the valve stem is sealingly disposed between the sealing unit and the valve stem.

14. The circulation valve of claim 13, wherein the valve stem comprises a first stem portion coupled to the flexible membrane and a second stem portion passing through the sealing unit and coupled to the sealing end, the first stem portion and the second stem portion being removably coupled therebetween.

15. The circulation valve of claim 14, wherein the first stem portion and the second stem portion are coupled to each other by magnetic attraction.

16. A circulating water heater comprising a circulating valve as claimed in any one of claims 1 to 15.

17. The circulating water heater of claim 16, wherein the circulating water heater includes a heating element, a cold water inlet, a return water inlet, and a hot water inlet, wherein the return water inlet is connected to the return water inlet, the cold water inlet is connected to the cold water inlet, and the heating element has one end connected to the water outlet and another end connected to the hot water inlet.