Flow adjusting device and water heater

Abstract

According to the flow adjusting device and the water heater, the first flow channel and the first silencing cavity as well as the second flow channel and the second silencing cavity jointly form a reactive silencer through sudden change of sectional areas, so that fluid noise is reduced; the first silencing cavity annularly surrounds the second flow channel, and fluid in the first silencing cavity and the second flow channel flows into the second silencing cavity together, so that the flow adjusting device is compact in structure, and the integration level is improved; when the water heater is in a normal working state, the opening and closing valve closes the second flow channel, and fluid only passes through the first flow channel; when the water heater is in a pressurizing or circulating state, the opening and closing valve is opened, and fluid passes through the first flow channel and the second flow channel at the same time, so that the number of the flow channels is matched with the flow demand, and the water pressure is matched with the flow channel resistance.

Description

Technical Field

[0001] The utility model relates to the field of water heaters, in particular to a flow regulating device and a water heater. Background Art

[0002] When the gas water heater is in normal working condition, a flow stabilizing valve needs to be installed on the output water path to reduce flow fluctuations and limit the maximum flow, thereby stabilizing the fluid flow and water temperature at the user end to ensure the user experience. However, in the pressurized and circulating state, the flow stabilizing valve will increase pipeline resistance, generate noise, and reduce the circulation flow and pressurization effect. However, the existing technology cannot correspondingly increase the effect of reducing fluid noise in the pressurized and circulating state. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a flow regulating device and a water heater in order to overcome the defect that the existing device cannot increase the effect of reducing fluid noise under pressurization and circulation conditions.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A flow regulating device, comprising a first flow channel, a second flow channel, a first silencing chamber, a second silencing chamber, a fluid inlet, a fluid outlet, and an opening and closing valve;

[0006] The fluid inlet, the first flow channel, the first silencing chamber, and the fluid outlet are connected in sequence, and the cross-sectional area of ​​the first silencing chamber close to the first flow channel is larger than the cross-sectional area of ​​the first flow channel close to the first silencing chamber;

[0007] The fluid inlet, the second flow channel, the second silencing chamber, and the fluid outlet are connected in sequence, and the cross-sectional area of ​​the second silencing chamber close to the second flow channel is larger than the cross-sectional area of ​​the second flow channel close to the second silencing chamber;

[0008] The fluid at the fluid inlet flows into the second flow channel and the second silencing chamber respectively through the first flow channel, the first silencing chamber surrounds the second flow channel in an annular shape, and the fluids in the first silencing chamber and the second flow channel flow into the second silencing chamber together;

[0009] The on-off valve can open or close the second flow channel.

[0010] In the present technical solution, a flow regulating device is provided and the above structure is set, so that the first flow channel and the first silencer chamber, the second flow channel and the second silencer chamber together constitute a resistive silencer through the sudden change of cross-sectional area, thereby reducing fluid noise; the first silencer chamber is set to annularly surround the second flow channel, and the fluids in the first silencer chamber and the second flow channel flow into the second silencer chamber together, so that the structure of the flow regulating device is compact and the integration is improved; when the flow demand is small, the opening and closing valve closes the second flow channel, and the fluid only passes through the first flow channel; when the flow demand is large, the opening and closing valve is opened, and the fluid passes through the first flow channel and the second flow channel at the same time, so that the number of flow channels and the flow demand are matched, and the water pressure and the flow channel resistance are adapted.

[0011] Preferably, the second flow channel includes a cylindrical connecting portion, the first silencing chamber is a circular ring structure, and the first silencing chamber surrounds the connecting portion.

[0012] In the present technical solution, by setting the second flow channel including a cylindrical connecting portion, the first silencing chamber is a circular ring structure, and the first silencing chamber surrounds the connecting portion, the integration of the flow regulating device can be improved with a relatively simple structure.

[0013] Preferably, the flow regulating device also includes a sealing plug, which separates the first silencing chamber and the connecting part to form a diversion chamber, and the sealing plug is provided with a first channel respectively connecting the connecting part and the diversion chamber and a second channel respectively connecting the first silencing chamber and the diversion chamber, and the opening and closing valve can open or close the first channel.

[0014] In the present technical solution, a sealing plug is provided to separate the first silencing chamber and the connecting part to form a diversion chamber, and a first channel and a second channel are provided on the sealing plug. Part of the fluid flowing through the first silencing chamber flows into the diversion chamber through the second channel, and then flows into the connecting part from the first channel. An opening and closing valve is provided to open or close the first channel, thereby achieving further buffering of the fluid with a relatively simple structure.

[0015] Preferably, the on-off valve further includes a movable portion, and the movable portion is capable of opening or closing the first channel.

[0016] In the present technical solution, by providing a movable part capable of opening or closing the first channel, it is possible to achieve matching of the number of channels with flow requirements, and matching of water pressure with channel resistance with a relatively simple structure.

[0017] Preferably, the first channel is located at the center of the sealing plug, and the two second channels are symmetrically distributed relative to the first channel.

[0018] In this technical solution, by arranging the first channel at the center of the sealing plug and the two second channels being symmetrically distributed relative to the first channel, the fluid entering the diversion cavity and the connecting part can be evenly distributed, avoiding the local concentrated distribution of the fluid to generate noise.

[0019] Preferably, the second silencing chamber is a cylindrical structure, and the inner diameter of the outer circumference of the first flow channel is equal to the inner diameter of the second silencing chamber.

[0020] In the present technical solution, by setting the second silencer chamber as a cylindrical structure, the outer inner diameter of the first flow channel is equal to the inner diameter of the second silencer chamber, so that the first flow channel can be arranged in parallel with the second silencer chamber in the flow regulating device, further making the structure of the flow regulating device compact and improving the integration.

[0021] Preferably, the flow regulating device also includes a partition, which separates the first flow channel and the second silencing chamber. The partition is provided with a third channel, and the third channel is located on the opposite side of the fluid inlet. The fluid at the fluid inlet flows into the second silencing chamber through the first flow channel and the third channel in sequence.

[0022] In the present technical solution, a partition is provided to separate the first flow channel and the second silencer chamber, and a third channel is provided on the partition on the opposite side of the fluid inlet, thereby extending the path of the fluid at the fluid inlet flowing into the second silencer chamber, thereby achieving further buffering of the fluid with a relatively simple structure.

[0023] Preferably, it comprises a flow stabilizing component, the flow stabilizing component is located in the first silencing cavity, and the flow stabilizing component annularly surrounds the second flow channel;

[0024] The flow stabilizing component includes a strain rubber and a base. The strain rubber is connected to the base. The outer side of the strain rubber faces the direction of the fluid in the first muffler cavity. The strain rubber and the base are respectively provided with corresponding through holes.

[0025] In the present technical solution, by setting up a flow stabilizing component with the above structure, when the fluid pressure flowing through the first silencer chamber is relatively high, the strain rubber will become thinner under the action of the fluid pressure, causing the through hole to become thinner, thereby increasing the fluid resistance in the first silencer chamber, thereby stabilizing the fluid in the first silencer chamber.

[0026] Preferably, the flow stabilizing component comprises a pressure plate, the pressure plate is located on the outer surface of the strain rubber, and the pressure plate is provided with the through holes corresponding to the strain rubber and the base.

[0027] In the technical solution, by arranging a pressure plate on the outer surface of the strain rubber, the deformation area of ​​the strain rubber is made uniform.

[0028] A water heater comprises the flow regulating device as described above, wherein the flow regulating device is located at the water outlet of the water pump of the water heater.

[0029] In the present technical solution, by providing a water heater and setting the above structure, when the water heater is in a normal working state, the opening and closing valve closes the second flow channel, and the fluid only passes through the first flow channel; when the water heater is in a pressurized or circulating state, the opening and closing valve is opened, and the fluid passes through the first flow channel and the second flow channel at the same time, so that the number of flow channels and flow requirements are matched, and the water pressure and flow channel resistance are adapted.

[0030] The positive and progressive effects of the utility model are:

[0031] By providing a flow regulating device and a water heater, and setting the above structure, the first flow channel and the first silencing chamber, the second flow channel and the second silencing chamber together form a resistive silencer through the sudden change of cross-sectional area, thereby reducing fluid noise; the first silencing chamber is arranged to annularly surround the second flow channel, and the fluids in the first silencing chamber and the second flow channel flow into the second silencing chamber together, so that the structure of the flow regulating device is compact and the integration is improved; when the water heater is in normal working state, the opening and closing valve closes the second flow channel, and the fluid only passes through the first flow channel; when the water heater is in a pressurized or circulating state, the opening and closing valve is opened, and the fluid passes through the first flow channel and the second flow channel at the same time, so that the number of flow channels and the flow demand are matched, and the water pressure and the flow channel resistance are adapted. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the longitudinal section structure of the flow regulating device of Example 1 of the utility model.

[0033] Figure 2 This is a schematic cross-sectional structure diagram of the flow regulating device of Example 1 of the utility model.

[0034] Figure 3 This is a schematic diagram of the longitudinal section structure of the flow regulating device of Example 2 of the utility model.

[0035] Figure 4 This is a schematic cross-sectional structure diagram of the flow regulating device of Example 2 of the utility model.

[0036] Figure 5 This is a schematic diagram of the structure of the flow stabilizing component of Example 2 of the utility model.

[0037] Description of reference numerals:

[0038] The first silencer chamber 01

[0039] Second silencer cavity 02

[0040] Diversion cavity 03

[0041] Communication portion 21

[0042] Fluid inlet 3

[0043] Fluid outlet 4

[0044] Open and close valve 5

[0045] Putter 511

[0046] Core 512

[0047] Driving coil 521

[0048] Return spring 522

[0049] Sealing plug 6

[0050] First channel 61

[0051] Second hole 62

[0052] Separator 7

[0053] The third channel 71

[0054] Flow stabilization component 8

[0055] Strain rubber 81

[0056] Base 82

[0057] Pressure plate 83 DETAILED DESCRIPTION

[0058] Two preferred embodiments are given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0059] Example 1

[0060] like Figure 1-Figure 2 As shown, the present embodiment provides a flow regulating device, which includes a first flow channel, a second flow channel, a first silencer chamber 01, a second silencer chamber 02, a fluid inlet 3, a fluid outlet 4, and an opening and closing valve 5; the fluid inlet 3, the first flow channel, the first silencer chamber 01, and the fluid outlet 4 are connected in sequence, and the cross-sectional area of ​​the first silencer chamber 01 close to the first flow channel is larger than the cross-sectional area of ​​the first flow channel close to the first silencer chamber 01; the fluid inlet 3, the second flow channel, the second silencer chamber 02, and the fluid outlet 4 are connected in sequence, and the cross-sectional area of ​​the second silencer chamber 02 close to the second flow channel is larger than the cross-sectional area of ​​the second flow channel close to the second silencer chamber 02; the fluid at the fluid inlet 3 flows into the second flow channel and the second silencer chamber 02 respectively through the first flow channel, the first silencer chamber 01 annularly surrounds the second flow channel, and the fluids in the first silencer chamber 01 and the second flow channel flow into the second silencer chamber 02 together; the opening and closing valve 5 can open or close the second flow channel.

[0061] In this way, by providing a flow regulating device and setting the above structure, the first flow channel and the first silencer chamber 01, the second flow channel and the second silencer chamber 02 form a resistive silencer through a sudden change in cross-sectional area, thereby reducing fluid noise; the first silencer chamber 01 is arranged to annularly surround the second flow channel, and the fluids in the first silencer chamber 01 and the second flow channel flow into the second silencer chamber 02 together, so that the structure of the flow regulating device is compact and the integration is improved; when the flow demand is small, the opening and closing valve 5 closes the second flow channel, and the fluid only passes through the first flow channel; when the flow demand is large, the opening and closing valve 5 is opened, and the fluid passes through the first flow channel and the second flow channel at the same time, so that the number of flow channels matches the flow demand, and the water pressure and the flow channel resistance are adapted. In this embodiment, the first flow channel and the second flow channel partially overlap in structure to improve the integration of the flow regulating device. In other embodiments, the first flow channel and the second flow channel can also be separated from each other in structure.

[0062] In this embodiment, the second flow channel includes a cylindrical connecting portion 21 , and the first silencing chamber 01 is a circular ring structure. The first silencing chamber 01 surrounds the connecting portion 21 .

[0063] In this way, by providing the second flow channel including the cylindrical connecting portion 21, the first silencing chamber 01 is an annular structure, and the first silencing chamber 01 surrounds the connecting portion 21, the integration of the flow regulating device can be improved with a relatively simple structure.

[0064] In this embodiment, the flow regulating device also includes a sealing plug 6, which separates the first silencing chamber 01 and the connecting portion 21 to form a diversion chamber 03. The sealing plug 6 is provided with a first channel 61 respectively connecting the connecting portion 21 and the diversion chamber 03 and a second channel 62 respectively connecting the first silencing chamber 01 and the diversion chamber 03. The opening and closing valve 5 can open or close the first channel 61.

[0065] In this way, by setting a sealing plug 6 that separates the first silencing chamber 01 and the connecting part 21 and forms a diversion chamber 03, and setting a first channel 61 and a second channel 62 on the sealing plug 6, part of the fluid flowing through the first silencing chamber 01 flows into the diversion chamber 03 through the second channel 62, and then flows into the connecting part 21 from the first channel 61, and an opening and closing valve 5 is set to open or close the first channel 61, thereby achieving further buffering of the fluid with a relatively simple structure.

[0066] In this embodiment, the on-off valve 5 further includes a movable portion, and the movable portion can open or close the first channel 61 .

[0067] In this way, by setting a movable part capable of opening or closing the first channel 61, the number of channels and the flow requirements can be matched, and the water pressure and the channel resistance can be adapted with a relatively simple structure. Specifically, in the present embodiment, the movable part includes a push rod 511 and an iron core 512, and the opening and closing valve 5 also includes a driving coil 521 and a reset spring 522. When the driving coil 521 is energized, the driving coil 521 pushes the iron core 512 and the push rod 511 connected thereto toward the first channel 61 through electromagnetic force until the first channel 61 is closed; when the driving coil 521 is de-energized, the reset spring 522 pushes the iron core 512 and the push rod 511 connected thereto through elastic force away from the first channel 61, and the first channel 61 is opened. Of course, in other embodiments, the opening and closing valve 5 can also be set to other structures capable of opening or closing the first channel 61.

[0068] In this embodiment, the first hole 61 is located at the center of the sealing plug 6 , and the two second holes 62 are symmetrically distributed relative to the first hole 61 .

[0069] In this way, by setting the first channel 61 at the center of the sealing plug 6 and the two second channels 62 being symmetrically distributed relative to the first channel 61, the fluid entering the diversion cavity 03 and the connecting part 21 can be evenly distributed, avoiding the local concentrated distribution of the fluid to generate noise.

[0070] In this embodiment, the second silencing chamber 02 is a cylindrical structure, and the outer inner diameter D1 of the first flow channel is equal to the inner diameter D2 of the second silencing chamber 02 .

[0071] In this way, by setting D1=D2, the first flow channel can be arranged in parallel with the second silencing chamber 02 in the flow regulating device, further making the structure of the flow regulating device compact and improving the integration.

[0072] In this embodiment, the flow regulating device also includes a partition 7, which separates the first flow channel and the second silencer chamber 02. A third channel 71 is provided on the partition 7, and the third channel 71 is located on the opposite side of the fluid inlet 3. The fluid at the fluid inlet 3 flows into the second silencer chamber 02 through the first flow channel and the third channel 71 in turn.

[0073] In this way, by setting a partition 7 that separates the first flow channel and the second silencing chamber 02, and setting a third channel 71 on the partition 7 located on the opposite side of the fluid inlet 3, the path of the fluid at the fluid inlet 3 flowing into the second silencing chamber 02 is extended, thereby achieving further buffering of the fluid with a relatively simple structure.

[0074] This embodiment also provides a water heater, which includes the flow regulating device as described above, and the flow regulating device is located at the water outlet of the water pump of the water heater (not shown in the figure).

[0075] In this way, by providing this water heater, when the water heater is in a normal working state, the opening and closing valve 5 can close the second flow channel, and the fluid only passes through the first flow channel; when the water heater is in a pressurized or circulating state, the opening and closing valve 5 is opened, and the fluid passes through the first flow channel and the second flow channel at the same time, so that the number of flow channels and flow requirements are matched, and the water pressure and flow channel resistance are adapted.

[0076] Example 2

[0077] like Figure 3-Figure 5 As shown, this embodiment also provides a flow regulating device, and its structure is substantially the same as that of the flow regulating device in Embodiment 1. The difference is that in this embodiment, the flow regulating device includes a flow stabilizing component 8, the flow stabilizing component 8 is located in the first silencing cavity 01, and the flow stabilizing component 8 annularly surrounds the second flow channel; the flow stabilizing component 8 includes a strain rubber 81 and a base 82, the strain rubber 81 is connected to the base 82, the outer side of the strain rubber 81 faces the direction of the fluid in the first silencing cavity 01, and the strain rubber 81 and the base 82 are respectively provided with corresponding through holes.

[0078] In this way, by setting up the flow stabilizing component 8 with the above structure, when the fluid pressure flowing through the first silencer chamber 01 is relatively high, the strain rubber 81 will become thinner under the action of the fluid pressure, making the through hole thinner, thereby increasing the fluid resistance in the first silencer chamber 01 and stabilizing the fluid in the first silencer chamber 01.

[0079] See also Figure 5 In this embodiment, the flow stabilizing component 8 includes a pressure plate 83 , which is located on the outer surface of the strain rubber 81 , and is provided with through holes corresponding to the strain rubber 81 and the base 82 .

[0080] In this way, by providing the pressure plate 83 on the outer surface of the strain rubber 81 , the deformation area of ​​the strain rubber 81 is made uniform.

[0081] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A flow regulating device, characterized in that: It includes a first flow channel, a second flow channel, a first silencing chamber, a second silencing chamber, a fluid inlet, a fluid outlet, and an opening and closing valve; The fluid inlet, the first flow channel, the first silencing chamber, and the fluid outlet are connected in sequence, and the cross-sectional area of ​​the first silencing chamber close to the first flow channel is larger than the cross-sectional area of ​​the first flow channel close to the first silencing chamber; The fluid inlet, the second flow channel, the second silencing chamber, and the fluid outlet are connected in sequence, and the cross-sectional area of ​​the second silencing chamber close to the second flow channel is larger than the cross-sectional area of ​​the second flow channel close to the second silencing chamber; The fluid at the fluid inlet flows into the second flow channel and the second silencing chamber respectively through the first flow channel, the first silencing chamber surrounds the second flow channel in an annular shape, and the fluids in the first silencing chamber and the second flow channel flow into the second silencing chamber together; The on-off valve can open or close the second flow channel.

2. The flow regulating device according to claim 1, characterized in that: The second flow channel includes a cylindrical connecting portion, the first silencing cavity is a circular ring structure, and the first silencing cavity surrounds the connecting portion.

3. The flow regulating device according to claim 2, characterized in that: The flow regulating device also includes a sealing plug, which separates the first silencing chamber and the connecting part to form a diversion chamber. The sealing plug is provided with a first channel respectively connecting the connecting part and the diversion chamber and a second channel respectively connecting the first silencing chamber and the diversion chamber. The opening and closing valve can open or close the first channel.

4. The flow regulating device according to claim 3, characterized in that: The on-off valve further includes a movable portion, and the movable portion is capable of opening or closing the first channel.

5. The flow regulating device according to claim 3, characterized in that: The first hole is located at the center of the sealing plug, and the two second holes are symmetrically distributed relative to the first hole.

6. The flow regulating device according to claim 2, characterized in that: The second silencing chamber is a cylindrical structure, and the inner diameter of the outer circumference of the first flow channel is equal to the inner diameter of the second silencing chamber.

7. The flow regulating device according to claim 1, characterized in that: The flow regulating device also includes a partition, which separates the first flow channel and the second silencing chamber. A third channel is provided on the partition, and the third channel is located on the opposite side of the fluid inlet. The fluid at the fluid inlet flows into the second silencing chamber through the first flow channel and the third channel in sequence.

8. The flow regulating device according to claim 1, characterized in that: It includes a flow stabilizing component, the flow stabilizing component is located in the first silencing cavity, and the flow stabilizing component annularly surrounds the second flow channel; The flow stabilizing component includes a strain rubber and a base. The strain rubber is connected to the base. The outer side of the strain rubber faces the direction of the fluid in the first muffler cavity. The strain rubber and the base are respectively provided with corresponding through holes.

9. The flow regulating device according to claim 8, characterized in that: The flow stabilizing component comprises a pressure plate, the pressure plate is located on the outer surface of the strain rubber, and the pressure plate is provided with the through holes corresponding to the strain rubber and the base.

10. A water heater, characterized in that: It comprises a flow regulating device as described in any one of claims 1 to 9, wherein the flow regulating device is located at the water outlet of the water pump of the water heater.

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