CN219301013U

CN219301013U - Gas water heater

Info

Publication number: CN219301013U
Application number: CN202223556271.4U
Authority: CN
Inventors: 卢楚鹏; 彭森焱; 郭林林
Original assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Current assignee: Guangdong Wanhe Thermal Energy Technology Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-07-04
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to the technical field of heat supply, in particular to a gas water heater. The device comprises a burner, a gas valve and a regulating valve, wherein the burner heats water; the gas valve is communicated with the burner through a gas pipe; the air inlet of governing valve and gas valve intercommunication, the air outlet of governing valve and the air inlet of combustor pass through the gas pipe intercommunication, the governing valve includes case, valve body, drive assembly and support piece, drive assembly sets up in support piece, the valve body inner chamber is located to the case, the valve body is provided with the governing valve gas outlet with the inner chamber intercommunication, drive assembly drive case removes in order to change the area of governing valve gas outlet in the valve body. The gas enters the inner cavity through the air inlet of the regulating valve, and the valve core can move in the valve body to reduce the volume of the inner cavity, so that the gas can be reduced along with the reduction of the volume of the inner cavity, and the low-load combustion requirement can be realized.

Description

Gas water heater

Technical Field

The utility model relates to the technical field of water heaters, in particular to a gas water heater.

Background

The load regulation ratio of the gas water heater in the current market is not high, so that the heat input of the machine is higher when the machine burns under the minimum load, and the machine is started and stopped beyond Wen Pinfan when the machine heats. When the water inlet temperature of the bathroom is higher in summer, the water outlet temperature of the bathroom cannot achieve the temperature set by a user, so that the water outlet temperature is higher than the set temperature, and the bathroom experience of the user is affected. In the prior art, in order to realize high load regulation ratio of the machine, a sectional valve is added on the gas water heater, and the combustor is changed into a sectional combustor to improve the load regulation ratio. The prior art has the following problems: 1. although the sectional combustion is adopted to improve the load regulation ratio, the sectional valve only plays a role of being opened or closed, and can not better realize lower-load combustion of the gas water heater; 2. the number of the sections of the sectional burner is increased, so that lower-load combustion can be realized, but the structure of the gas water heater is more complex, and the cost of the gas water heater is increased.

Disclosure of Invention

The utility model aims to provide a gas water heater which can realize low-load combustion of the gas water heater on the premise of low cost.

The technical problems are solved by the following technical scheme:

a gas water heater comprising:

a burner;

the gas valve is communicated with the burner through a gas pipe;

the gas inlet of governing valve with the gas valve intercommunication, the gas outlet of governing valve with the gas inlet of combustor passes through the gas pipe intercommunication, the governing valve include case, valve body, drive assembly and support piece, drive assembly set up in support piece, the case is located the valve body inner chamber, the case with the inner chamber lateral wall sealing and sliding connection of valve body, the valve body be provided with the governing valve gas outlet of inner chamber intercommunication, drive assembly drive the case is in the valve body removes in order to change the area of governing valve gas outlet.

Compared with the background technology, the gas water heater has the following beneficial effects:

the gas valve can reduce the gas flow in the working process, and the gas flow can be further reduced by setting the regulating valve, so that the purpose of lower-load combustion of the gas water heater is realized, the problem that the minimum load of the existing gas valve still cannot meet the low-load combustion is solved by the set regulating valve, and the load regulation ratio of the gas water heater is improved.

In one embodiment, the valve body is provided with a regulator valve inlet in communication with the interior cavity.

In one embodiment, the driving assembly comprises a motor, a gear and a rack, the body of the motor is fixed on the supporting piece, the gear is arranged on the output shaft of the motor, the rack is slidably connected with the supporting piece so as to be capable of moving linearly relative to the gear, and the rack is fixedly connected with the valve core.

In one embodiment, the motor is a dual-output motor, each output shaft of the motor is provided with a gear, the valve core is provided with two racks, and the gears are in one-to-one correspondence with and meshed with the racks.

In one embodiment, the rack is slidably connected with the support member through a guide structure, the guide structure comprises a guide rail and a guide groove, the guide rail is arranged on one of the back surface of the rack and the support member, the guide groove is arranged on the other one, and the guide rail is slidably matched with the guide groove.

In one embodiment, the driving assembly comprises a motor, a screw and a nut slider, wherein the motor is fixed on the supporting piece, the motor is fixedly connected with the screw, the screw is in threaded connection with the nut slider, and the nut slider is fixedly connected with the valve core.

In one embodiment, the motor is a stepper motor.

In one embodiment, the driving assembly comprises a cylinder, a piston rod of the cylinder is connected with the valve core, and the cylinder can push the valve core to move linearly.

In one embodiment, the gas water heater further comprises a fan, and the air quantity of the fan is positively correlated with the gas quantity flowing out of the regulating valve.

In one embodiment, the support member is a housing shell, the housing shell is disposed on the outer side of the valve body, the housing shell is fixedly connected with the valve body, and the driving assembly is disposed in a cavity formed by the housing shell.

In one embodiment, the burner is a full row burner.

Drawings

FIG. 1 is a schematic diagram of a gas water heater according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a connection relationship between a regulating valve and a gas valve according to an embodiment of the present utility model;

FIG. 3 is a schematic structural diagram of a regulating valve according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a regulator valve provided by an embodiment of the present utility model;

fig. 5 is a schematic structural view of a burner according to an embodiment of the present utility model.

Description of the reference numerals:

1. a burner; 2. a gas valve; 3. a regulating valve; 31. a valve core; 32. a valve body; 321. an air outlet of the regulating valve; 322. an air inlet of the regulating valve; 33. a drive assembly; 331. a motor; 332. a gear; 333. a rack; 34. a support; 4. a gas pipe; 5. a blower; 6. a housing.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In the prior art, when the gas water heater adopts the sectional valve, lower-load combustion cannot be realized, and even if the sectional burner is adopted, low-load combustion can be realized, the manufacturing cost of the gas water heater can be increased due to the fact that the sectional burner is more complex in structure.

Therefore, the embodiment of the utility model provides the gas water heater, which can meet the requirement of lower-load combustion of the gas water heater, and the manufacturing cost is reduced compared with that of a segmented burner.

As shown in fig. 1, the gas water heater comprises a shell, a burner 1, a heat exchanger, a gas valve 2 and a regulating valve 3, wherein the burner 1, the heat exchanger, the gas valve 2 and the regulating valve 3 are positioned in a cavity formed by the shell, and the burner 1 provides heat energy for the heat exchanger so that the heat exchanger heats water; the gas valve 2 is in communication with the burner 1 via a gas pipe 4.

As shown in fig. 2, 3 and 4, the air inlet of the regulating valve 3 is communicated with the gas valve 2, the air outlet of the regulating valve 3 is communicated with the air inlet of the burner 1 through the gas pipe 4, the regulating valve 3 comprises a valve core 31, a valve body 32, a supporting piece 34 and a driving component 33, the driving component 33 is arranged on the supporting piece 34, the valve core 31 is arranged in the inner cavity of the valve body 32, the valve core 31 is sealed with the side wall of the inner cavity of the valve body 32 and is in sliding connection, the valve body 32 is provided with a regulating valve air outlet 321 and a regulating valve air inlet 322, the regulating valve air outlet 321 is communicated with the inner cavity, the regulating valve air inlet 322 is communicated with the gas pipe 4, the valve core 31 is arranged in the inner cavity, and the driving component 33 drives the valve core 31 to move so as to change the regulating valve air outlet 321. The fuel gas enters the inner cavity through the air inlet 322 of the regulating valve, and the valve core 31 can move in the valve body 32 to reduce the volume of the inner cavity, so that the fuel gas can be reduced along with the reduction of the volume of the inner cavity, and the low-load combustion requirement can be realized.

In some embodiments, as shown in fig. 3, the driving assembly 33 includes a motor 331, a gear 332, and a rack 333, the body of the motor 331 is fixed to the support frame 34, the output shaft of the motor 331 is provided with the gear 332, the rack 333 is slidably connected to the support 34 so as to be capable of moving linearly with respect to the gear 332, the rack 333 is fixedly connected to the valve core 31, and the rack 333 is capable of moving linearly with respect to the gear 332. The rotation of the motor 331 can drive the gear 332 to rotate together, so that the gear 332 and the rack 333 are mutually matched, the rack 333 can realize linear movement under the action of the gear 332, and the valve core 31 can move in the inner cavity of the valve body 32 due to the fixed connection of the rack 333 and the valve core 31, so that the volume of the inner cavity is changed, the flow of fuel gas is reduced, and the low input power of the fuel gas water heater is realized. The structure of the gear 332 and the rack 333 is simpler and more reliable, so that the adjusting precision of the adjusting valve 3 is higher.

In this embodiment, in order to enable the valve core 31 to stably operate, the motor 331 is a dual-output motor, that is, the motor 331 has two output shafts, the two output shafts are disposed at two ends of the motor 331, a gear 332 is disposed on each output shaft of the motor 331, the valve core 31 is provided with two racks 333, and the gears 332 are in one-to-one correspondence with and meshed with the racks 333. Because the racks 333 are fixedly connected with the valve core 31, the racks 333 at two ends of the valve core 31 move linearly under the action of the gears 332, and compared with the arrangement of one rack 333, the two racks 333 can enable the valve core 31 to move more stably.

The rack 333 is slidably connected to the support 34 by a guide structure comprising a rail and a channel, the rail being disposed on one of the back of the rack and the support, the channel being disposed on the other, the rail being in sliding engagement with the channel. The rack 333 can move along a straight line under the guiding action of the guide rail and the guide groove, and the rack 333 is prevented from shaking.

In other embodiments, specifically, the driving assembly 33 includes a motor 331, a screw and a nut slider, the motor 331 is fixed on the support 34, the motor 331 is fixedly connected with the screw, the screw is in threaded connection with the nut slider, the motor 331 is fixedly connected with the screw, and the nut slider is fixedly connected with the valve core 31. The screw rod rotates along with the motor 331, and the nut slider can realize linear movement under the effect of the screw rod, so that the execution movement of the valve core 31 can be realized, and the nut slider can be made to reciprocate in the inner cavity according to actual needs so as to increase or reduce the volume of the inner cavity, thereby meeting different low-load adjustment.

Note that the motor 331 is a stepping motor. The stepping motor has the advantages of good position precision, quick start-stop and reverse response, high reliability and the like.

In addition, in order to ensure combustion, in this embodiment, the gas water heater further includes a fan 5, and the air volume of the fan 5 is positively correlated with the air volume flowing out from the regulating valve 3. The wind power classified in this way can adaptively adjust the rotation speed of the fan 5 according to the opening degree of the adjusting valve 3.

Taking the driving assembly 33 including the motor 331, the gear 332 and the rack 333 as an example, as shown in fig. 4, the operation process of the gas water heater is as follows:

when the gas water heater burns at the minimum opening of the gas valve 2, the outlet water temperature of the gas water heater is higher than the set temperature. At this time, the regulating valve 3 acts, the motor 331 of the regulating valve 3 rotates, and the gear 332 drives the rack 333 to move leftwards in the rotating process, so that the valve core 31 is pushed to slowly push leftwards, the inner cavity is gradually reduced, and the flow of the fuel gas is reduced, so that the low input power of the fuel gas water heater is realized. When the motor 331 drives the valve core 31 to move leftwards, the rotating speed of the fan 5 can be correspondingly reduced, so that the fan 5 can be prevented from running at a high speed when the gas water heater burns under a too small load, and unstable combustion of the gas water heater and even flame extinguishment are caused.

When the gas water heater is switched from the minimum load to the large load for combustion, the motor 331 starts to reversely rotate, the gear 332 drives the rack 333 to move rightwards, so that the valve core 31 is pushed to slowly push to the right, the inner cavity is gradually increased, the rotating speed of the fan 5 is increased at the moment, the gas water heater is prevented from being combusted at the large load, the air inlet amount is insufficient, the gas water heater is caused to lack oxygen in combustion and unstable in combustion, and a large amount of CO is generated. If the valve core 31 is completely opened and the inner cavity does not reach the set temperature, the gas valve 2 is opened again, and the combustion load is increased to reach the set temperature.

When the gas water heater starts to burn, the lifting load combustion is realized by the adjusting valve 3 preferentially. When the gas water heater needs lower load combustion, the gas valve 2 can not be adjusted, and then the gas water heater operates through the adjusting valve 3, so that lower load combustion is realized.

When the regulating valve 3 is operated, the machine is switched from low load combustion to high load combustion, and the regulation is performed by the operation of the regulating valve 3. When the regulation of the regulating valve 3 is not realized, the gas valve 2 is used for regulating to realize the combustion with larger load.

When the gas water heater is shut down or stopped, the valve core 31 of the regulating valve 3 is restored to a position where the entire air flow passage of the valve body 32 is fully opened. The gas water heater is started again and then the combustion load of the gas water heater is regulated through the working process.

Of course, in other embodiments, the driving assembly 33 may further include a cylinder, where a piston rod of the cylinder is connected to the valve core 31, and the cylinder can push the valve core 31 to move linearly. The cylinder can push the valve core 31 to change the volume of the inner cavity, so that the aim of low-load adjustment can be fulfilled.

To achieve the supporting protection of the driving component 33, in some embodiments, with continued reference to fig. 4, the supporting member 34 is a housing shell, the housing shell is disposed on the outer side of the valve body 32, the housing shell is fixedly connected with the valve body 32, and the driving component 33 is disposed in a cavity formed by the housing shell. The housing can also avoid the drive assembly 33 from being exposed while supporting the drive assembly 33, so that the regulating valve 3 is modularized, and the integral installation of the regulating valve 3 is facilitated.

In other embodiments, the support 34 is a support plate, wherein the motor 331 is fixed to the support plate, and one end of the support plate is fixedly disposed on the outer side wall of the valve body 32.

In the present embodiment, as shown in fig. 5, the burner 1 is a full-row burner. The full-row burner is a non-segmented burner, so that the burner 1 does not need to be provided with a gas distribution pipe and other structures, the structure is simpler, the heat load can be adjusted by matching the gas valve 2 and the regulating valve 3, and the load adjusting ratio is higher.

The adjusting valve 3 may be a ball valve or a butterfly valve, and the opening of the ball valve or the butterfly valve is controlled by rotation to change the size of the air flow channel.

In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing detailed description of the embodiments presents only a few embodiments of the present utility model, which are described in some detail and are not intended to limit the scope of the present utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The gas water heater, its characterized in that includes:

a burner (1);

the gas valve (2) is communicated with the burner (1) through a gas pipe (4);

the gas inlet of governing valve (3) with gas valve (2) intercommunication, the gas outlet of governing valve (3) with the air inlet of combustor (1) is passed through gas pipe (4) intercommunication, governing valve (3) include case (31), valve body (32), drive assembly (33) and support piece (34), drive assembly (33) set up in support piece (34), case (31) are located the inner chamber of valve body (32), case (31) with the inner chamber lateral wall of valve body (32) is sealed and sliding connection, valve body (32) be provided with governing valve gas outlet (321) of inner chamber intercommunication, drive assembly (33) drive case (31) are in move in order to change in valve body (32) the area of governing valve gas outlet (321).

2. A gas water heater according to claim 1, wherein the valve body (32) is provided with a regulator valve inlet (322), the regulator valve inlet (322) being in communication with the inner cavity.

3. The gas water heater as claimed in claim 1, wherein the driving assembly (33) comprises a motor (331), a gear (332) and a rack (333), the body of the motor (331) is fixed on the support (34), the output shaft of the motor (331) is provided with the gear (332), the rack (333) is slidably connected with the support (34) so as to be capable of moving linearly relative to the gear (332), and the rack (333) is fixedly connected with the valve core (31).

4. A gas water heater as claimed in claim 3, wherein the motor (331) is a dual output motor, a gear (332) is provided on each output shaft of the motor (331), the valve core (31) is provided with two racks (333), and the gears (332) are in one-to-one correspondence with and meshed with the racks (333).

5. A gas water heater as claimed in claim 3, wherein the rack (333) is slidably connected to the support (34) by a guide structure comprising a guide rail and a guide groove, the guide rail being provided on one of the back of the rack and the support, the guide groove being provided on the other, the guide rail being slidably fitted to the guide groove.

6. The gas water heater as claimed in claim 1, wherein the drive assembly (33) comprises a motor (331), a screw and a nut slider, the motor (331) being fixed to the support (34), the motor (331) being fixedly connected to the screw, the screw being threadedly connected to the nut slider, the nut slider being fixedly connected to the valve core (31).

7. A gas water heater according to claim 3 or 6, wherein the motor (331) is a stepper motor.

8. Gas water heater according to claim 1, characterized in that the drive assembly (33) comprises a cylinder, the piston rod of which is connected to the valve core (31), the cylinder being able to push the valve core (31) to move linearly.

9. The gas water heater according to claim 1, further comprising a fan (5), wherein the air volume of the fan (5) is positively correlated with the gas volume flowing out of the regulating valve (3).

10. The gas water heater as claimed in claim 1, wherein the support (34) is a housing shell, the housing shell is disposed on the outer side of the valve body (32), the housing shell is fixedly connected with the valve body (32), and the driving assembly (33) is disposed in a cavity formed by the housing shell.

11. Gas water heater according to claim 1, characterized in that the burner (1) is a full-row burner.