CN213451831U - Multichannel valve body, multichannel valve body unit and gas heater - Google Patents

Abstract

The utility model relates to a multichannel valve body, multichannel valve body unit and gas heater, multichannel valve body, including the main entrance, the total water inlet of main entrance is used for with the water main, the total delivery port of main entrance be arranged in with the heat exchanger inlet tube intercommunication among the gas heater, still be equipped with branch's delivery port and branch water inlet on the main entrance, branch's delivery port be used for with power element's water inlet intercommunication, branch's water inlet be used for with power element's delivery port intercommunication, branch's delivery port and branch's water inlet set gradually on the water flow direction of main entrance, be equipped with first throttle switch valve on the main entrance, first throttle switch valve is located between branch's delivery port and the branch's water inlet. During conventional heating, the pressure in the tap water main pipe can provide flowing power for water flow, at the moment, the first throttling switch valve is opened, and the water flow in the main channel directly flows to the main water outlet from the main water inlet and avoids the power element. The power element does not need to be forced to rotate, and the service life of the power element is effectively prolonged.

Description

Multichannel valve body, multichannel valve body unit and gas heater

Technical Field

The utility model relates to a water heater technical field especially relates to multichannel valve body, multichannel valve body unit and gas heater.

Background

The gas water heater is a hot water heating device widely applied to family life, and in the conventional heating process, water in a tap water main pipe flows to the gas water heater under the pressure effect of the tap water main pipe while continuously releasing hot water, so that water flow power is provided. Under the lower service environment of outdoor ambient temperature, can pass through gas heater with the hydrologic cycle in the indoor circulation pipeline to heat the water in the indoor circulation pipeline to the uniform temperature, perhaps carry out the internal circulation heating with the water in each pipeline in the gas heater, thereby reach the condition emergence of avoiding the pipeline to freeze and ruin. Or when the user has high requirement on indoor water use and needs to discharge hot water instantly when using hot water, the water in the indoor pipeline can be circularly heated to a certain temperature by using the gas water heater, so that the water in the indoor pipeline is kept at the certain temperature, and when the user opens the water discharge switch valve, the hot water flows out instantly. In the process of circulating heating, water flows only circulate between the indoor circulating pipeline and the gas water heater on the basis of no water loss in the circulating loop, so that water in an external tap water main pipe cannot enter the circulating loop, and power elements such as a water pump and the like are required to provide water flow circulating power. But the service life of the power element used for the circulation heating process in the common gas water heater is short.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the shorter problem of power component life who is generally used for gas heater mesocycle heating process, provided a multichannel valve body, multichannel valve body unit and gas heater to reach the technological effect who improves power component life.

The utility model provides a multichannel valve body, includes the main entrance, the total water inlet of main entrance is used for with the water main intercommunication, the total delivery port of main entrance be arranged in with the heat exchanger inlet tube intercommunication among the gas heater, still be equipped with branch delivery port and branch water inlet on the main entrance, branch delivery port be used for with power element's water inlet intercommunication, branch water inlet be used for with power element's delivery port intercommunication, branch delivery port with branch water inlet is in set gradually on the water flow direction of main entrance, be equipped with first throttle switch valve on the main entrance, first throttle switch valve is located between branch delivery port and the branch water inlet.

The scheme provides a multi-channel valve body which can be mainly used in a gas water heater, when a circulation heating mode is required, the first throttle switch valve cuts off a channel between a branch water outlet and a branch water inlet on a main channel, when water in an indoor circulation pipeline or an internal circulation pipeline of the gas water heater flows back to the main channel, the water flows from the branch water outlet to the power element, then flows to the branch water inlet under the action of the power element to enter the main channel, then flows to a water inlet pipe of a heat exchanger from the main water outlet, and finally circulates to the indoor circulation pipeline or the internal circulation pipeline of the gas water heater. When the gas water heater provided with the multi-way valve body is used for heating in a conventional way, the pressure in a tap water main pipe can provide flowing power for water flow, at the moment, the first throttle switch valve is opened, and the water flow in the main channel directly flows to the main water outlet from the main water inlet and avoids the power element. Furthermore, in the conventional heating process, the power element does not need to be forced to rotate, and the service life of the power element is effectively prolonged.

In one embodiment, the main channel is provided with an air outlet, the air outlet is positioned downstream of the branch water inlet in the water flow direction of the main channel, and an air exhaust device is arranged at the air outlet.

In one embodiment, the pipe section provided with the main water outlet on the main channel is a water outlet pipe section, the water outlet pipe section is arranged along a first direction, the water outlet direction of the main water outlet is arranged along a second direction, the first direction is not parallel to the second direction, the air outlet is located on the water outlet pipe section, the air exhaust direction of the air outlet is the first direction, and the air outlet is located on one side, far away from the branch water inlet, of the water outlet pipe section.

In one embodiment, the water supply system comprises a main pipeline, the main pipeline is a straight pipe, the main channel is a channel in the main pipeline, an opening at one end of the main pipeline is the total water inlet, an opening at the other end of the main pipeline is the air outlet, a first joint, a second joint and a third joint are arranged on the side wall of the main pipeline, the first joint, the second joint and the third joint are sequentially arranged in the water flow direction of the main pipeline, an opening of the first joint is the branch water outlet, an opening of the second joint is the branch water inlet, and an opening of the third joint is the total water outlet.

In one embodiment, the first throttle switch valve is a one-way valve for preventing water entering from the branch water inlet from flowing back to the branch water outlet along the main channel.

In one embodiment, the check valve further comprises an elastic clamping ring, the pipe section used for mounting the check valve on the main channel is a middle pipe section, a shoulder is arranged on the side wall of the middle pipe section, one end of the check valve abuts against the shoulder, the other end of the check valve abuts against the elastic clamping ring, and the outer ring of the elastic clamping ring is embedded in the inner wall of the middle pipe section.

A multi-channel valve body unit comprises a power element and the multi-channel valve body, wherein a water inlet of the power element is communicated with a branch water outlet, and a water outlet of the power element is communicated with the branch water inlet.

Above-mentioned scheme provides a multichannel valve body unit, through inciting somebody to action power component sets up between branch water inlet and the branch delivery port to when being equipped with when the gas heater of multichannel valve body unit carries out conventional heating, rivers directly flow to total delivery port by the total water inlet of main entrance, and can not pass through power component, power component can not forced the rotation, effectively prolongs power component's life.

In one embodiment, a branch pipeline is arranged between the branch water inlet and the branch water outlet, and the power element is arranged on the branch pipeline.

A gas water heater comprises a burner, a heat exchanger, a smoke exhaust device, an inner circulation pipe and the multi-channel valve body unit, wherein the burner, the heat exchanger and the smoke exhaust device are sequentially connected, a water inlet pipe of the heat exchanger is communicated with a main water outlet, a water outlet end of a water outlet pipe of the heat exchanger is provided with a water outlet connector communicated with an indoor circulation pipeline, the inner circulation pipe is communicated with the water outlet pipe and the main water inlet, and the inner circulation pipe is provided with a second throttling switch valve.

The scheme provides a gas water heater, and by adopting the multi-channel valve body unit, after water in an external tap water main pipe enters the main channel in the conventional heating process, the water is directly discharged into the water inlet pipe of the heat exchanger from the main water outlet which is active, and does not need to pass through a power element connected between the branch water inlet and the branch water outlet. Thereby effectively avoiding the power element from being forced to rotate and prolonging the service life of the power element in the gas water heater.

In one embodiment, the water heater further comprises a controller, wherein a flow and temperature detection piece is arranged on the water inlet pipe, a water outlet temperature detection piece is arranged on the water outlet pipe, a gas proportional valve is arranged at a gas inlet of the burner, and the controller is electrically connected with the power element, the flow and temperature detection piece, the water outlet temperature detection piece, the smoke exhaust device and the gas proportional valve.

In one embodiment, the water supply system further comprises a three-way pipe, two openings of the three-way pipe are respectively communicated with the main water inlet and the inner circulating pipe, the other opening of the three-way pipe is communicated with the tap water main pipe, a water return joint is arranged on the inner circulating pipe, and the water return joint is located on one side, away from the water outlet pipe, of the second throttling switch valve.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a front view of the multi-channel valve body of the present embodiment;

FIG. 2 is a cross-sectional view taken along A-A of the multi-channel valve body of FIG. 1;

FIG. 3 is an exploded view of the multi-channel valve body of FIG. 1;

FIG. 4 is a schematic structural diagram of a gas water heater according to the present embodiment;

fig. 5 is a schematic structural diagram of a gas water heater according to another embodiment.

Description of reference numerals:

10. a multi-channel valve body; 11. a main pipeline; 111. a main channel; 112. a main water inlet; 113. an exhaust port; 114. a middle tube section; 12. a first joint; 121. a branch water outlet; 13. a second joint; 131. a branched water inlet; 14. a third joint; 141. a main water outlet; 15. an exhaust device; 151. a seal member; 16. a first throttle switch valve; 17. an elastic snap ring; 20. a power element; 30. a branch line; 40. a gas water heater; 41. a burner; 411. a gas proportional valve; 42. a heat exchanger; 421. a heat exchange pipe; 422. a water inlet pipe; 4221. a flow and temperature sensing element; 423. a water outlet pipe; 4231. a water outlet temperature detection member; 43. a fume extractor; 44. an inner circulation pipe; 441. a second throttle switch valve; 45. a water outlet joint; 46. a three-way pipe; 47. a water return joint; 48. a water inlet joint.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1 to 3, in one embodiment, a multi-channel valve body 10 is provided, which comprises a main channel 111, wherein a main water inlet 112 of the main channel 111 is used for communicating with a tap water main pipe, and a main water outlet 141 of the main channel 111 is used for communicating with a water inlet pipe 422 of a heat exchanger 42 in a gas water heater 40. The main channel 111 is further provided with a branch water outlet 121 and a branch water inlet 131, the branch water outlet 121 is used for being communicated with a water inlet of the power element 20, the branch water inlet 131 is used for being communicated with a water outlet of the power element 20, and the branch water outlet 121 and the branch water inlet 131 are sequentially arranged in the water flow direction of the main channel 111. A first throttle switch valve 16 is arranged on the main channel 111, and the first throttle switch valve 16 is positioned between the branch water outlet 121 and the branch water inlet 131.

The multi-channel valve body 10 provided by the above scheme can be mainly used in a gas water heater 40, when a circulation heating mode needs to be performed, the first throttle switch valve 16 cuts off a channel between the branch water outlet 121 and the branch water inlet 131 on the main channel 111, and when water in an indoor circulation pipeline or an internal circulation pipeline of the gas water heater 40 flows back to the main channel 111, the water flows from the branch water outlet 121 to the power element 20, then flows to the branch water inlet 131 under the action of the power element 20 to enter the main channel 111, then flows from the main water outlet 141 to the water inlet pipe 422 of the heat exchanger 42, and finally circulates to the indoor circulation pipeline or the internal circulation pipeline of the gas water heater 40. When the gas water heater 40 provided with the multi-way valve body is heated normally, the pressure in the main water pipe can provide flowing power for water flow, at the moment, the first throttle switch valve 16 is opened, and the water flow in the main channel 111 directly flows from the main water inlet 112 to the main water outlet 141, so as to avoid the power element 20. Furthermore, during the conventional heating process, the power element 20 does not need to be forced to rotate, thereby effectively prolonging the service life of the power element.

The conventional heating process mentioned here means that water heated by the gas water heater 40 is released at a switch valve such as a faucet or a shower head at a user end, cold water in a tap water main is continuously supplied to the gas water heater 40, and hot water heated by the gas water heater 40 is continuously supplied to a user.

The circulation heating mode described herein includes an inside circulation heating mode and an outside circulation heating mode. The internal circulation heating mode means that all pipelines in the gas water heater 40 are communicated to form an internal circulation loop, and water circularly flows in the internal circulation loop, so that the water in all pipelines in the gas water heater 40 is above the target temperature. The external circulation heating mode is that the indoor circulation pipeline is communicated with the pipeline in the gas water heater 40 to form an external circulation loop, and water circulates in the external circulation loop, so that the water in the indoor circulation pipeline is heated to a target temperature.

When the circulation heating mode is performed, no water is lost in the whole external circulation loop or the internal circulation loop, water in the water main cannot flow into the gas water heater 40, and under the action of no water pressure in the water main, the power of water circulation can be provided only by the power element 20. Specifically, the power element 20 may be a water pump.

Further specifically, in one embodiment, as shown in fig. 1 to 5, the first throttle switch valve 16 provided in the main channel 111 may be a one-way valve for preventing water entering from the branch water inlet 131 from flowing back to the branch water outlet 121 along the main channel 111.

Further, in one embodiment, as shown in fig. 1 to 3, an air outlet 113 is provided on the main channel 111, the air outlet 113 is located downstream of the branch water inlet 131 in the water flow direction of the main channel 111, and an air exhaust device 15 is provided at the air outlet 113.

So that the bubbles formed during heating in the gas water heater 40 are collected in the exhaust port 113 during circulation and then discharged out of the main channel 111 through the exhaust device 15. Avoid the bubble too much in the pipeline, lead to the great condition of noise to take place.

Further, the main channel 111 may be integrated into a plate, and a passage is provided on the plate according to the relative position of the main channel 111 and each water inlet and outlet in the multi-channel valve body 10, so as to form the multi-channel valve body 10.

Or as shown in fig. 1 to 3, the multi-channel valve body 10 includes a main pipeline 11, the main channel 111 is a channel in the main pipeline 11, an opening at one end of the main pipeline 11 is the main water inlet 112, and an opening at the other end of the main pipeline 11 is the air outlet 113. The branch water inlet 131 and the branch water outlet 121 are disposed on a side wall of the main pipeline 11.

The exhaust device 15 is disposed at an end of the main pipe 11, and a sealing member 151 may be disposed between the main pipe 11 and the exhaust device 15 to prevent water in the main pipe 11 from leaking out of a position where the exhaust device 15 is installed.

Further, as shown in fig. 1 to 3, in one embodiment, the pipe section of the main channel 111 provided with the main water outlet 141 is an outlet pipe section. The water outlet pipe sections are arranged along a first direction, the water outlet direction of the main water outlet 141 is arranged along a second direction, and the first direction is not parallel to the second direction. The exhaust port 113 is located on the water outlet pipe section, and an exhaust direction of the exhaust port 113 is the first direction. The exhaust port 113 is located on the side of the water outlet pipe section away from the branch water inlet 131.

And then water is in the in-process that flows, the water in the delivery pipe section originally flows along first direction, gets into total delivery port 141, the flow direction changes when following total delivery port 141 discharges, changes the second direction from first direction, rivers turn round the in-process that changes flow direction, and the bubble of aquatic is changeed and is discharged, consequently sets up gas collection gas more easily at the gas vent 113 here, improves carminative efficiency, effectively reduces the noise.

More specifically, in an embodiment, as shown in fig. 1 to 3, the main pipeline 11 is a straight pipe, a first joint 12, a second joint 13, and a third joint 14 are disposed on a side wall of the main pipeline 11, the first joint 12, the second joint 13, and the third joint 14 are sequentially disposed in a water flow direction of the main channel 111, an opening of the first joint 12 is the branch water outlet 121, an opening of the second joint 13 is the branch water inlet 131, and an opening of the third joint 14 is the main water outlet 141.

When the heat exchanger is used, one end of the main pipeline 11 is communicated with a tap water main pipe, the first joint 12 is communicated with a water inlet of the power element 20, the second joint 13 is communicated with a water outlet of the power element 20, and the third joint 14 is communicated with a water inlet pipe 422 of the heat exchanger 42.

The two ends of the main pipeline 11 are opened to form the main water inlet 112 and the exhaust port 113, respectively, and at a position close to the exhaust port 113, the water flow in the main pipeline 11 needs to undergo an angle change of 90 degrees, so that bubbles in the water flow are discharged and gathered at the exhaust port 113.

More specifically, in an embodiment, as shown in fig. 2, the multi-channel valve body 10 further includes an elastic snap ring 17, a pipe section for mounting the check valve on the main channel 111 is an intermediate pipe section 114, a shoulder is provided on a side wall of the intermediate pipe section 114, one end of the check valve abuts against the shoulder, the other end of the check valve abuts against the elastic snap ring 17, and an outer ring of the elastic snap ring 17 is embedded in an inner wall of the intermediate pipe section 114. The one-way valve is trapped between the shoulder and the snap ring 17.

More specifically, when the main pipe 11 is included in the multi-channel valve body 10, the middle pipe segment 114 is a portion of the main pipe 11 between the first joint 12 and the second joint 13.

Further, as shown in fig. 4 and 5, in one embodiment, a multi-channel valve body unit is provided, which includes a power member 20 and the multi-channel valve body 10 described above. The water inlet of the power element 20 is communicated with the branch water outlet 121, and the water outlet of the power element 20 is communicated with the branch water inlet 131.

According to the multi-channel valve body unit provided by the scheme, the power element 20 is arranged between the branch water inlet 131 and the branch water outlet 121, so that when the gas water heater 40 provided with the multi-channel valve body unit is used for carrying out conventional heating, water flows to the main water outlet 141 directly from the main water inlet 112 of the main channel 111 and does not pass through the power element 20, the power element 20 cannot be forced to rotate, and the service life of the power element 20 is effectively prolonged.

Specifically, as shown in fig. 4 and 5, in one embodiment, a branch pipeline 30 is disposed between the branch water inlet 131 and the branch water outlet 121, and the power element 20 is disposed on the branch pipeline 30.

When the circulation heating mode is performed, the branch line 30 is a part of the inner circulation circuit or the outer circulation circuit, and the first throttle opening/closing valve 16 is in a closed state. The water flowing back into the main channel 111 enters the branch line 30, and the power element 20 provides power for the water circulation.

Further, as shown in fig. 4 and 5, in a further embodiment, there is provided a gas water heater 40 comprising a burner 41, a heat exchanger 42, a smoke exhaust device 43, an internal circulation pipe 44 and the above-mentioned multi-channel valve body unit. The burner 41, the heat exchanger 42 and the smoke exhaust device 43 are connected in this order. After entering the heat exchanger 42, the hot flue gas formed by the combustion of the burner 41 is discharged from the gas water heater 40 through the smoke exhaust device 43. After the hot flue gas enters the heat exchanger 42, the heat of the hot flue gas is exchanged to the heat exchange tube 421 wound outside the heat exchanger 42, and the cold water in the heat exchange tube 421 is heated. The water inlet pipe 422 and the water outlet pipe 423 of the heat exchanger 42 are respectively communicated with two ends of the heat exchange pipe 421.

Further, the water inlet pipe 422 of the heat exchanger 42 is communicated with the main water outlet 141, and the water outlet end of the water outlet pipe 423 of the heat exchanger 42 is provided with a water outlet joint 45 for communicating with an indoor circulation pipeline. The inner circulation pipe 44 is communicated with the water outlet pipe 423 and the main water inlet 112, and a second throttle switch valve 441 is arranged on the inner circulation pipe 44.

The above-mentioned solution provides a gas water heater 40, by using the above-mentioned multi-channel valve body unit, after water in the external main water pipe enters the main channel 111 during the conventional heating process, the water is directly discharged from the main water outlet 141 of the main channel 111 into the water inlet pipe 422 of the heat exchanger 42, without passing through the power element 20 connected between the branch water inlet 131 and the branch water outlet 121. Thereby effectively preventing the power element 20 from being forced to rotate and prolonging the service life of the power element 20 in the gas water heater 40.

In the internal circulation heating mode, the second throttle switching valve 441 is turned on, the hot water heat-exchanged in the heat exchanger 42 flows into the water outlet pipe 423, and the hot water in the water outlet pipe 423 flows into the internal circulation pipe 44 and flows back to the main passage 111 from the internal circulation pipe 44.

When the external circulation heating mode is performed, the second throttle switch is turned off, the water in the water outlet pipe 423 can only flow from the water outlet joint 45 to the indoor circulation pipeline, and the water in the indoor circulation pipeline flows back to the main channel 111.

Further, as shown in fig. 4 and 5, the main pipeline 11 of the multi-channel valve body 10 is disposed along a longitudinal direction, the exhaust device 15 is disposed at the top end of the main pipeline 11, the main water inlet 112 is an opening at the bottom end of the main pipeline 11, and the main water outlet 141, the branch water inlets 131 and the branch water outlets 121 are sequentially disposed from top to bottom in the axial direction of the main pipeline 11.

Specifically, in one embodiment, as shown in fig. 4 and 5, a water return connector 47 is provided on the inner circulation pipe 44, and the water return connector 47 is located on a side of the second throttle switch valve 441 away from the water outlet pipe 423. When a pipeline special for circulating return water is arranged in the indoor circulating pipeline, the return water pipeline can be communicated with the return water joint 47, so that water in the indoor circulating pipeline can directly flow into the return water joint 47 from the return water pipeline and then enters the main channel 111.

Further, as shown in fig. 4 and 5, in one embodiment, the gas water heater 40 further comprises a tee 46, two openings of the tee 46 are respectively communicated with the main water inlet 112 and the inner circulation pipe 44, and the other opening of the tee 46 is communicated with the main water pipe.

When a pipeline specially used for circulating the return water is not arranged in the indoor circulating pipeline, the indoor circulating pipeline is directly communicated with an opening in the three-way pipe 46 for communicating with a tap water main pipe, and water in the indoor circulating pipeline flows back to the main channel 111 from the opening. Specifically, as shown in fig. 4 and 5, a water inlet joint 48 is provided at an opening of the three-way pipe 46 for communicating with the tap water main. The main water pipe is communicated with the water inlet joint 48, and the indoor circulating pipeline can be communicated with the water inlet joint 48.

Further, in an embodiment, the gas water heater 40 further includes a controller, as shown in fig. 4, a flow and temperature detecting element 4221 is disposed on the water inlet pipe 422, a water outlet temperature detecting element 4231 is disposed on the water outlet pipe 423, a gas proportional valve 411 is disposed at an air inlet of the burner 41, and the controller is electrically connected to the power element 20, the flow and temperature detecting element 4221, the water outlet temperature detecting element 4231, the smoke exhaust device 43, and the gas proportional valve 411.

When a conventional heating process is performed, the controller controls the gas proportional valve 411 to adjust through the water temperature detected by the water outlet temperature detection piece 4231, adjusts the proportion of gas entering the combustor 41, adjusts the heating temperature of the combustor 41, and further controls the water temperature.

When the flow rate and temperature detecting member 4221 detects water flow information, the controller controls the burner 41 and the smoke exhaust device 43 to be activated, whether in a normal heating process or in a circulation heating mode. In the circulation heating mode, when the water temperature in the inner circulation loop or the outer circulation loop reaches the target value or more, the controller controls the gas proportional valve 411 to be closed, and controls the smoke exhaust device 43 and the power element 20 to be closed after a certain time interval. The specific interval duration may be 20 seconds.

Further alternatively, in one embodiment, as shown in FIG. 5, the flow and temperature sensing member 4221 communicates between the tee 46 and the water inlet fitting 48 as long as water flow into the gas water heater 40 can be sensed.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (11)

1. The utility model provides a multichannel valve body, its characterized in that, includes the main entrance, the total water inlet of main entrance is arranged in with the water main intercommunication of running water, the total delivery port of main entrance be arranged in with the heat exchanger inlet tube intercommunication among the gas heater, still be equipped with branch delivery port and branch water inlet on the main entrance, branch delivery port be used for with power element's water inlet intercommunication, branch water inlet be used for with power element's delivery port intercommunication, branch delivery port with branch water inlet is in set gradually on the water flow direction of main entrance, be equipped with first throttle switch valve on the main entrance, first throttle switch valve is located between branch delivery port and the branch water inlet.

2. The multi-channel valve body of claim 1, wherein the main channel is provided with an exhaust port, the exhaust port is located downstream of the branch water inlet in the water flow direction of the main channel, and an exhaust device is provided at the exhaust port.

3. The multi-channel valve body according to claim 2, wherein the pipe section of the main channel on which the main water outlet is provided is a water outlet pipe section, the water outlet pipe section is arranged along a first direction, the water outlet direction of the main water outlet is arranged along a second direction, the first direction is not parallel to the second direction, the air outlet is located on the water outlet pipe section, the air exhaust direction of the air outlet is the first direction, and the air outlet is located on one side of the water outlet pipe section away from the branch water inlet.

4. The multi-channel valve body according to claim 3, comprising a main pipeline, wherein the main pipeline is a straight pipe, the main channel is a channel in the main pipeline, an opening at one end of the main pipeline is the total water inlet, an opening at the other end of the main pipeline is the air outlet, a first joint, a second joint and a third joint are arranged on a side wall of the main pipeline, the first joint, the second joint and the third joint are sequentially arranged in a water flow direction of the main pipeline, an opening of the first joint is the branch water outlet, an opening of the second joint is the branch water inlet, and an opening of the third joint is the total water outlet.

5. The multi-channel valve body of any one of claims 1 to 4, wherein the first throttle switch valve is a check valve for preventing water entering from the branch water inlet from flowing back along the main channel to the branch water outlet.

6. The multi-channel valve body of claim 5, further comprising an elastic snap ring, wherein the pipe section for mounting the check valve on the main channel is a middle pipe section, a shoulder is arranged on a side wall of the middle pipe section, one end of the check valve abuts against the shoulder, the other end of the check valve abuts against the elastic snap ring, and an outer ring of the elastic snap ring is embedded in an inner wall of the middle pipe section.

7. A multi-channel valve body unit, comprising a power element and a multi-channel valve body as claimed in any one of claims 1 to 6, wherein the water inlet of the power element is communicated with the branch water outlet, and the water outlet of the power element is communicated with the branch water inlet.

8. The multi-channel valve body unit of claim 7, wherein a branch line is provided between the branch water inlet and the branch water outlet, the power element being provided on the branch line.

9. A gas water heater is characterized by comprising a burner, a heat exchanger, a smoke exhaust device, an internal circulation pipe and a multi-channel valve body unit according to claim 7 or 8, wherein the burner, the heat exchanger and the smoke exhaust device are sequentially connected, a water inlet pipe of the heat exchanger is communicated with a main water outlet, a water outlet end of a water outlet pipe of the heat exchanger is provided with a water outlet connector communicated with an indoor circulation pipeline, the internal circulation pipe is communicated with the water outlet pipe and the main water inlet, and the internal circulation pipe is provided with a second throttling switch valve.

10. The gas water heater of claim 9, further comprising a controller, wherein the water inlet pipe is provided with a flow and temperature detector, the water outlet pipe is provided with a water outlet temperature detector, the air inlet of the burner is provided with a gas proportional valve, and the controller is electrically connected to the power element, the flow and temperature detector, the water outlet temperature detector, the smoke exhaust device and the gas proportional valve.

11. The gas water heater of claim 9, further comprising a three-way pipe, two openings of the three-way pipe are respectively communicated with the main water inlet and the inner circulation pipe, the other opening of the three-way pipe is communicated with the tap water main pipe, a water return joint is arranged on the inner circulation pipe, and the water return joint is positioned on one side, away from the water outlet pipe, of the second throttle switch valve.

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