CN117824145A - Gas water heater - Google Patents

Abstract

The invention discloses a gas water heater, comprising: the shell is provided with a water inlet main pipe and a water outlet main pipe; the front panel and the rear panel of the combustion chamber are provided with upwards extending extension parts, and an installation area is formed between the two extension parts; the heat exchanger comprises a heat exchange tube and two end plates, wherein the two end plates are oppositely arranged, and the heat exchange tube penetrates through the two end plates; a fume collecting hood, on which a fan is arranged; a mixing control valve includes a valve housing and a flow restrictor assembly. The water flow is accurately regulated through the mixing regulating valve so as to reduce the fluctuation of the water temperature of the water outlet of the water heater, the temperature control effect of the water heater is improved, and meanwhile, the heat exchanger has no shell and no winding pipe, so that the integral structure of the heat exchanger is effectively simplified, and the manufacturing cost of the gas water heater is further reduced.

Description

Gas water heater

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a gas water heater.

Background

At present, water heaters are household appliances commonly used in daily life of people, and the water heaters can be divided into gas water heaters, electric water heaters and solar water heaters according to different heat sources. In the use process, the hot water output by the water heater is output for a user to use through a user terminal (such as a faucet or a shower).

The gas water heater is widely used because of its convenient use. The heat exchanger in the gas water heater is an important component part, and the heat exchanger generally comprises a heat exchange tube, wherein part of the heat exchange tube penetrates through a shell above the combustion chamber, and part of the heat exchange bin is wound outside the shell above the combustion chamber. However, in the actual assembly process, the overall structure of the heat exchanger is complex, and the assembly difficulty is high. In addition, in the actual use process, when the water is turned off for a short time and the hot water is reused, there is a change in the water temperature. Taking a gas water heater as an example, in the normal use process, when a user turns off water and turns on again, the water temperature is increased, then is reduced and is stabilized, and the use experience of the user is further affected.

In view of this, how to design a water heater technology with low manufacturing cost and good temperature control effect is a technical problem to be solved by the invention.

Disclosure of Invention

The invention provides a gas water heater, which can accurately regulate water flow through a mixing regulating valve to reduce water temperature fluctuation of water outlet of the water heater, improve temperature control effect of the water heater, and meanwhile, the heat exchanger has no shell and no winding pipe design, so that the whole structure of the heat exchanger is effectively simplified, and further, the manufacturing cost of the gas water heater is reduced.

In order to achieve the technical purpose, the invention is realized by adopting the following technical scheme:

in one aspect, the present invention provides a gas water heater comprising:

the shell is provided with a water inlet main pipe and a water outlet main pipe;

the front panel and the rear panel of the combustion chamber are provided with upwards extending extension parts, and an installation area is formed between the two extension parts;

the heat exchanger comprises a heat exchange tube and two end plates, wherein the two end plates are oppositely arranged, and the heat exchange tube penetrates through the two end plates;

a fume collecting hood, on which a fan is arranged;

the mixing adjusting valve comprises a valve shell and a flow limiting assembly, wherein a water inlet pipe, a first water outlet pipe and a second water outlet pipe are arranged on the valve shell, a first water outlet for discharging water is arranged in the first water outlet pipe, a partition plate is arranged in the second water outlet pipe, a second water outlet is arranged on the partition plate, the water inlet pipe and the second book outlet pipe are arranged on the side wall of the valve shell, and the first water outlet pipe is arranged at one end part of the valve shell; the flow restricting assembly is disposed in the valve housing and configured to adjust the opening of the first and second water outlets;

the combustion chamber, the heat exchanger, the fume collecting hood and the mixing regulating valve are arranged in the shell, the fume collecting hood is arranged above the heat exchanger, the heat exchanger is arranged in the mounting area, the extension part is connected with the lower edge of the fume collecting hood, and the end plate is connected between the fume collecting hood and the side plate on the corresponding side of the combustion chamber; the water inlet pipe is connected with the water inlet main pipe, the first water outlet pipe is connected with the inlet of the heat exchange pipe, and the second water outlet pipe and the outlet of the heat exchange pipe are respectively connected with the water outlet main pipe.

In an embodiment of the present application, the heat exchange tube is further provided with a plurality of fins, and the fins are located between the two end plates.

In one embodiment of the present application, the lower edge of the end plate is overlapped on the side plate of the corresponding side, and the upper edge of the end plate is overlapped on the lower edge of the fume collecting hood.

In one embodiment of the present application, the extension and the overlap are at a lower edge of the fume collecting hood.

In an embodiment of the application, the device further comprises a preheating device, wherein the preheating device comprises a heat exchange box body and a preheating pipe, a communication port is formed in the heat exchange box body, a smoke exhaust pipe is further arranged on the heat exchange box body, and the preheating pipe is located in the heat exchange box body; the heat exchange box body is arranged in the shell, the communication port is communicated with the smoke outlet of the smoke collecting hood, and the first water outlet pipe is connected with the heat exchange pipe through the preheating pipe.

In an embodiment of the present application, the flow restriction assembly includes a driving member, a first moving member and a second moving member, the first moving member and the second moving member are slidably disposed in the valve housing, the driving member is configured to drive the first moving member and the second moving member to reciprocally slide in the valve housing, the first moving member is configured to be close to or far from the first water outlet to adjust the opening of the first water outlet, and the second moving member is configured to be close to or far from the second water outlet to adjust the opening of the second water outlet.

In this application embodiment, first moving part includes installation cover, pivot and end cap, the installation cover sets up in the valve casing, be provided with the screw hole in the installation cover, the pivot runs through the installation cover, one end of pivot stretch out to the outside of valve casing and with drive part connects, another end of pivot extends to first delivery port department and is provided with the end cap, be provided with screw thread portion in the pivot, screw thread portion threaded connection is in the screw hole, the end cap with first delivery port relative arrangement.

In an embodiment of the present application, the second moving part comprises an annular surrounding shield, and the annular surrounding shield is arranged on the rotating shaft and is abutted against the inner wall of the valve housing.

In an embodiment of the present application, a water inlet for water is provided in the water inlet pipe; one end of the annular enclosing shield is provided with a notch, and the notch is configured to adjust the opening of the water inlet in the rotation process.

In an embodiment of the present application, the inner wall of the annular enclosure is provided with a plurality of protrusions, and the protrusions are attached to the outer wall of the mounting sleeve.

In an embodiment of the present application, a connecting rod is provided on the rotating shaft, and the annular enclosure is provided on the connecting rod.

In an embodiment of the present application, the inner wall of the annular enclosure is provided with two clamping grooves, and the end portion of the connecting rod is clamped in the corresponding clamping groove.

In an embodiment of the present application, a hollow bracket is disposed in the first water outlet pipe, an end portion of the rotating shaft is rotatably disposed on the hollow bracket, and a hollow hole of the hollow bracket forms the first water outlet; and/or a baffle is arranged in the second water outlet pipe, and the second water outlet is arranged on the baffle.

In an embodiment of the present application, still be provided with flow detector in the inlet tube, flow detector includes hall switch, sleeve, impeller and support frame, telescopic import is provided with a plurality of guide plates of slope arrangement, and is a plurality of the free end of guide plate passes through the spliced pole and connects, the support frame sets up telescopic export, the impeller sets up in the sleeve and be located the support frame with between the spliced pole, hall switch arranges one side of impeller and sets up the outside of valve casing

In another aspect, the invention provides a water heater, which comprises a water heater main body, wherein the water heater main body is provided with a water inlet main pipe and a water outlet main pipe, and is also provided with a heat exchange pipe and also comprises the mixing regulating valve; the water inlet pipe of the mixing regulating valve is connected with the water inlet main pipe, the first water outlet pipe of the mixing regulating valve is connected with the inlet of the heat exchange pipe, and the second water outlet pipe of the mixing regulating valve and the outlet of the heat exchange pipe are respectively connected with the water outlet main pipe.

Compared with the prior art, the invention has the advantages and positive effects that: through being provided with the extension that upwards lengthens at the top of the front and back panel of combustion chamber to form the installation zone that is used for installing the heat exchanger between two extension, when the complete machine equipment, install the heat exchanger in the installation zone that two extension formed, two end plates and extension mutually support and form the surrounding structure and supply flue gas to carry and heat the heat exchange tube between two end plates, in addition, the effect that collects flue gas and guide flue gas output is satisfied to the top of heat exchanger is covered to the collection petticoat pipe, to the heat exchanger, it has cancelled the shell structure, only adopt two end plates to support the installation heat exchange tube, the effectual overall structure form of simplifying the heat exchanger, realize the heat exchanger in the gas heater no casing no-winding pipe design, with the overall structure of effectual simplification heat exchanger, and then realize reducing gas heater's manufacturing cost.

In addition, through setting up the restriction subassembly in the valve casing, the drive component in the restriction subassembly can drive first moving part and second moving part at the inside activity of valve casing, first moving part can be close to or keep away from first delivery port in order to adjust its aperture in the activity in-process, and then satisfy the purpose that water heater heating power changes and need adjust rivers, and the second moving part is the same moves its aperture for the second delivery port, like this, in the in-process of water heater switch water, can adjust the aperture of two delivery ports and realize cold and hot water's mixing, and then reach the undulant purpose of reduction water heater play water temperature, through mixing the governing valve with accurate regulation water flow in order to reduce water heater's play water temperature fluctuation, and then improve user experience nature.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a gas water heater according to the present invention;

FIG. 2 is an assembly view of the combustion chamber, heat exchanger, fume collection hood and preheating device of FIG. 1;

FIG. 3 is a schematic view of the heat exchanger of FIG. 2;

FIG. 4 is a schematic diagram of the mixing valve of FIG. 1;

FIG. 5 is a second schematic diagram of the mixing valve of FIG. 1;

FIG. 6 is a cross-sectional view of the mixing control valve of FIG. 1;

FIG. 7 is an exploded view of the mixing control valve of FIG. 1;

FIG. 8 is an exploded view of the restrictor assembly of the mixing valve of FIG. 1;

FIG. 9 is a schematic view of a second moving part of the mixing valve of FIG. 1;

FIG. 10 is a schematic diagram of the flow detector of the mixing valve of FIG. 1;

FIG. 11 is a second schematic diagram of the flow detector of the mixing valve of FIG. 1.

Reference numerals:

a valve housing 1;

a water inlet pipe 11 and a water inlet 111;

a first water outlet pipe 12 and a first water outlet 121;

a second water outlet pipe 13 and a second water outlet 131;

hollow brackets 14 and partition boards 15;

a flow restricting assembly 2;

the first moving member 21, the mounting sleeve 211, the rotating shaft 212, the plug 213, the seal ring 214, the screw portion 2121, and the connecting rod 2122;

the second moving member 22, the notch 221, the catch 222, the projection 223;

a flow rate detector 3;

sleeve 31, impeller 32, support 33, deflector 34, connecting column 35, hall switch 36;

the shell 10, the water inlet main pipe 101 and the water outlet main pipe 102;

a burner 20;

a combustion chamber 30, a front panel 301, a rear panel 302, an extension 303, a thermal insulation layer 304;

heat exchanger 40, heat exchange tubes 401, end plates 402, bypass tubes 403, fins 404;

fume collection hood 50, fan 501;

a preheating device 60, a heat exchange box 601 and a smoke exhaust pipe 602.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention. Furthermore, 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.

The water heater is a device for heating water conveyed by a municipal pipe network through a heat exchange pipe to form hot water so as to output the hot water to a user. The electric water heater and the gas water heater are classified according to different heating modes of the heat exchange tubes.

The electric water heater adopts electric energy as a main energy material, the heat exchange tube is an electric heating component, and the high-temperature heat generated after the electric heating component is electrified directly heats water of the electric water heater so as to achieve the purpose of outputting hot water. Wherein, the electric heating part in the instant heating type electric water heater is provided with a cold water inlet and a hot water outlet so as to realize instant heating type heating water.

The gas water heater adopts gas as main energy material, the heat exchange tube is a heat exchanger, and the high-temperature heat generated by combustion of the gas is transferred into cold water flowing through the heat exchanger to achieve the purpose of preparing hot water. The gas water heater is also a water heater for heating water instantly.

In order to reduce temperature fluctuation of water temperature output by the water heater, especially in the water switching process, the mixing proportion of cold water and hot water is effectively adjusted to reduce fluctuation of water outlet temperature, and therefore, the mixing adjusting valve is adopted for adjusting the cold water and hot water proportion in an embodiment of the application.

As shown in fig. 1 to 4, the gas water heater provided in the embodiment of the present application includes:

a housing 100, wherein a water inlet manifold 101 and a water outlet manifold 102 are arranged on the housing 100;

a burner 20, the burner 20 for burning fuel gas;

the combustion chamber 30, the front panel 301 and the rear panel 302 of the combustion chamber 30 are provided with upwardly extending extensions 303, and a mounting area is formed between the two extensions 303;

a heat exchanger 40, the heat exchanger 40 including a heat exchange tube 401 and two end plates 402, the two end plates 402 being arranged opposite to each other, the heat exchange tube 401 penetrating the two end plates 402;

the fume collecting hood 50, the fume collecting hood 50 is provided with a fan 51;

the mixing regulating valve 70, the mixing regulating valve 70 comprises a valve shell 1 and a flow limiting assembly 2, a water inlet pipe 11, a first water outlet pipe 12 and a second water outlet pipe 13 are arranged on the valve shell 1, a first water outlet 121 for water outlet is arranged in the first water outlet pipe 12, a partition plate 15 is arranged in the second water outlet pipe 13, and a second water outlet 131 for water outlet is arranged on the partition plate 15; wherein the water inlet pipe 11 and the second book outlet pipe are arranged on the side wall of the valve casing 1, and the first water outlet pipe 12 is arranged at one end part of the valve casing 1; a restrictor assembly 2 is disposed in the valve housing and is configured to adjust the opening of the first and second water outlets;

wherein the burner 20, the combustion chamber 30, the heat exchanger 40 and the fume collecting hood 50 are arranged in the housing 100, the burner 20 is arranged at the bottom of the combustion chamber 30, the heat exchanger 40 is arranged in the installation area, and the fume collecting hood 50 is arranged above the heat exchanger 40; extension 303 is connected to the lower edge of fume collection hood 50 and end plate 402 is connected between fume collection hood 50 and the side plate on the opposite side of combustion chamber 30.

In addition, the water inlet pipe 11 is connected with the water inlet main pipe, the first water outlet pipe is connected with the inlet of the heat exchange pipe, and the second water outlet pipe and the outlet of the heat exchange pipe are respectively connected with the water outlet main pipe.

Specifically, in the actual assembly process of the gas water heater, the heat exchanger 40 is perforated on the two end plates 402 and the heat exchange tubes 401 are correspondingly inserted, so that the heat exchange tubes 401 are fixedly installed on the two end plates 402.

The heat exchanger 40 is not provided with a separate housing as a whole, and therefore, when the heat exchanger 40 is installed, the extending parts 303 formed on the front side and the rear side of the combustion chamber 302 are used as front and rear plate bodies of the heat exchanger 40, and the two extending parts 303 are spliced together with the two end plates in a ending manner to form an enclosing structure. In this way, the flue gases output upwards from the combustion chamber 30 are guided via the two extensions 303 between the two end plates 402, so that the flue gases can exchange heat with the water flowing in the heat exchange tubes 401.

At the same time, the top of the heat exchanger 40 is covered by the fume collecting hood 50. The fume collecting hood 50 is disposed on the top of the heat exchanger 40, the left and right sides of the fume collecting hood 50 will be connected with the end plates 402 of the heat exchanger 40, and the front and rear sides of the fume collecting hood 50 will be connected with the extension 303 extending upward of the combustion chamber 30, so that the fume is finally collected in the fume collecting hood 50 to be uniformly discharged.

In addition, the mixing adjusting valve 70 added to the housing 10 is assembled by the valve housing 1 and the flow restricting assembly 2, wherein the valve housing 1 is provided with a water inlet pipe 11, a first water outlet pipe 12 and a second water outlet pipe 13, the water inlet pipe 11 is used for introducing the water flow, and the water flow is output from the first water outlet pipe 12 and/or the second water outlet pipe 13 according to the requirement after entering the valve housing 1.

Specifically, in the practical application process, the water inlet manifold 101 is connected to a water supply pipe (such as a tap water pipe) in the user's home, and the water outlet manifold 102 is connected to a water terminal (such as a shower or faucet) through the water pipe in the user's home.

For the water input by the water inlet main pipe 101, the water firstly enters the mixing regulating valve 70, and the mixing regulating valve 70 supplies water to the heat exchange pipe 401 through the first water outlet pipe 12 so as to be heated by the burnt fuel gas; meanwhile, according to the set value of the water outlet temperature of the water outlet main pipe 102, the mixing regulating valve 70 controls the water outlet amount of the first water outlet pipe 12 and regulates the water outlet amount of the second water outlet pipe 13, so that the water outlet temperature of the water outlet main pipe 102 is kept within a set temperature range. Wherein the second outlet pipe 13 can be connected to the outlet manifold 102 via a bypass pipe 103.

Through being provided with the extension that upwards lengthens at the top of the front and back panel of combustion chamber to form the installation zone that is used for installing the heat exchanger between two extension, when the complete machine equipment, install the heat exchanger in the installation zone that two extension formed, two end plates and extension mutually support and form the surrounding structure and supply flue gas to carry and heat the heat exchange tube between two end plates, in addition, the effect that collects flue gas and guide flue gas output is satisfied to the top of heat exchanger is covered to the collection petticoat pipe, to the heat exchanger, it has cancelled the shell structure, only adopt two end plates to support the installation heat exchange tube, the effectual overall structure form of simplifying the heat exchanger, realize the heat exchanger in the gas heater no casing no-winding pipe design, with the overall structure of effectual simplification heat exchanger, and then realize reducing gas heater's manufacturing cost.

In an embodiment of the present application, the heat exchange tube 401 is further provided with a plurality of fins 404, and the fins 404 are located between the two end plates 402.

Specifically, in the actual assembly process, for the heat exchange tube 401, a tube expansion manner may be adopted to provide a plurality of fins 404 on the outside of the heat exchange tube 401, and the fins 404 and the heat exchange tube 401 have better heat conduction capability, and after the tube expansion is completed on the heat exchange tube 401, the heat exchange tube is assembled on the two end plates 402.

By adding the fins 404 on the heat exchange tube 401, the expansion tube of the fin 404 heat exchange tube is formed on the heat exchange tube 401 and is in heat conduction connection with the heat exchange tube, and the heat exchange area with the flue gas can be increased through the fins 404, so that the overall heat exchange efficiency of the heat exchanger 40 is improved.

In one embodiment of the present application, the lower edge of the end plate 402 overlaps the side plate on the corresponding side, and the upper edge of the end plate 402 overlaps the lower edge of the hood 50.

Specifically, in the actual assembly process, the upper and lower edges of the end plate 402 may be respectively overlapped with the side plate and the smoke collecting hood 50 at the corresponding sides, and then the end plate 402 is connected with the side plate and the smoke collecting hood 50 by screws.

The end plate 402 is fixedly mounted to the lower end portion of the end plate 402 by lap-joint connection of the end plate 402 with the side plate on the corresponding side of the combustion chamber 30, and the end plate 402 and the side plate form an overlapping region, so that leakage of smoke from a connection portion formed between the end plate 402 and the side plate is reduced, and air tightness is improved.

Similarly, the upper end of the end plate 402 is fixedly mounted by lap-jointing the lower edge of the end plate 402 with the corresponding side of the fume collecting hood 50, and the end plate 402 and the fume collecting hood 50 form an overlapping area to reduce the leakage of fume from the joint formed between the end plate 402 and the fume collecting hood 50, thereby improving the air tightness.

In one embodiment of the present application, the extension 303 overlaps the lower edge of the hood 50.

Specifically, for the combustion chamber 30 and the fume collecting hood 50, the combustion chamber 30 and the fume collecting hood 50 are connected and fixed by the extension 303. Similarly, the extension 303 is fastened by screws after overlapping the hood 50.

By lap-connecting the upper end of the extension 303 with the lower edge of the fume collecting hood 50, good fixing and sealing are achieved around the heat exchanger 40, and no separate shell is required to be configured for the heat exchanger 40, so that the overall structure is effectively simplified.

In one embodiment of the present application, the inner surface of the combustion chamber 30 is provided with an insulating layer 304.

Specifically, since the gas burned by the burner 20 generates high temperature flue gas in the combustion chamber 30, the high temperature flue gas will generate heat radiation to the periphery of the combustion chamber 30. The heat insulation layer 304 protects the inner wall of the combustion chamber 30, so that the combustion chamber 30 is prevented from conducting heat outwards to cause overheating of the housing 100, and the heat insulation layer 304 reduces the leakage of heat of the flue gas, so that the heating efficiency of the flue gas to the heat exchange tube 401 is improved, and the energy utilization is improved.

In an embodiment of the present application, the preheating device 60 is further included, the preheating device 60 includes a heat exchange box 601 and a preheating pipe (not shown), a communication port 62 is provided on the heat exchange box 601, a smoke exhaust pipe 602 is further provided on the heat exchange box 601, and the preheating pipe is located in the heat exchange box 601; the heat exchange box 601 is arranged in the shell 100, the communication port is communicated with the smoke outlet of the smoke collecting hood 50, and the second communication port is connected with the heat exchange tube 401 through the preheating tube.

Specifically, for the preheating device 60, it introduces the smoke collected by the smoke collecting hood 50 therein through the heat exchanging box 601 and outputs from the smoke discharging pipe 602. Meanwhile, the preheating pipe in the heat exchange box 601 is connected to the water inlet side of the heat exchange pipe 401, so that water entering the heat exchange pipe 401 can flow into the preheating pipe to be preheated by flue gas.

Through adding preheating device 60, the heat exchange box 601 in preheating device 60 communicates with collection petticoat pipe 50 for the flue gas can export outdoors by exhaust pipe 602 again via heat exchange box 601, and, set up in the heat exchange box 601 the preheating tube can preheat the cold water that flows into in the heat exchange tube 401, with abundant utilization flue gas waste heat heats the water that flows in the preheating tube, and then improves the utilization ratio of gas heat.

In one embodiment of the present application, the preheating device 60 is disposed on one side of the hood 50.

Specifically, by disposing the preheating device 60 at one side of the fume collecting hood 50 to fully utilize the inner space within the housing 100 to install and distribute the respective functional components, the space utilization is improved.

In one embodiment of the present application, the fume collecting hood 50 is provided with the fume exhaust port on the side surface, and the fume exhaust port is communicated with the communication port through a horizontally arranged fume channel.

Specifically, the smoke outlet is formed in the side face of the smoke collecting cover 50, so that the smoke is conveniently connected with the heat exchange box 601 on one side through the smoke channel, and the smoke is conveniently and rapidly conveyed into the heat exchange box 601 from the smoke collecting cover 50.

In an embodiment of the present application, the heat exchanger 40 further includes a bypass pipe 403, and the bypass pipe 403 is connected between two ends of the heat exchange pipe 401.

Specifically, the bypass pipe 403 is welded between both ends of the heat exchange pipe 401, for example: holes may be formed in the wall of both ends of the heat exchange tube 401, and then the bypass tube 403 may be inserted into the corresponding holes to be welded.

Through connecting through bypass pipe 403 at the both ends of heat exchange tube, the pipe diameter of bypass pipe 403 is less, can make partial cold water not pass through the flue gas heating of combustion chamber 30 to more effective regulation temperature.

Based on the above technical solution, for the current limiting assembly 2, the following specific structure may be adopted.

As shown in fig. 4 to 11, the flow restriction assembly 2 includes a driving part (not shown), a first moving part 21 and a second moving part 22, the first moving part 21 and the second moving part 22 being slidably disposed in the valve housing 1, the driving part being configured to drive the first moving part 21 and the second moving part 22 to reciprocally slide in the valve housing 1, the first moving part 21 being configured to be close to or far from the first water outlet 121 to adjust the opening degree of the first water outlet 121, and the second moving part 22 being configured to be close to or far from the second water outlet 131 to adjust the opening degree of the second water outlet 131.

Specifically, during the assembly process, the first and second moving members 21 and 22 are provided in the valve housing 1 to satisfy the adjustment of the opening degrees of the first and second water outlets 121 and 131 formed in the valve housing 1. And the driving member is installed outside the valve housing 1 after the first and second moving members 21 and 22 are assembled into the valve housing 1.

In the use process, in the normal heating process, the driving part drives the first moving part 21 to move away from the first water outlet 121 so as to adjust the first water outlet pipe 12 to be at the maximum opening degree and further obtain the maximum water flow; at the same time, the second moving part 22 moves synchronously in the same direction along with the first moving part 21 to close the second water outlet pipe 13, i.e. the bypass flow path is in a cut-off position.

In the normal water use process, the power of the heat exchange tube is reduced due to the influence of external factors, and at this time, the flow of the first water outlet pipe 12 needs to be regulated. At this time, the driving part drives the first moving part 21 and the second moving part 22 to move towards the first water outlet 121, and the first moving part 21 correspondingly reduces the opening of the first water outlet 121 to reduce the water flow of the first water outlet pipe 12, so as to maintain the constant water temperature output by the water heater.

However, the second moving member 22 moves along with the first moving member 21, but the movement stroke is insufficient to expose the second water outlet 131, so that the second water outlet 131 is still in a closed state. In the process, according to the difference between the water outlet temperature and the set temperature of the water heater, the driving part drives the first moving part 21 to move in the forward and backward directions so as to dynamically adjust the water outlet temperature.

In the case where the water outlet temperature of the water heater is continuously high during the adjustment of the first moving member 21, it is necessary to further reduce the water flow into the heat exchange tube and, at the same time, to open the bypass water flow. At this time, the driving part 21 drives the first moving part 21 and the second moving part 22 to move continuously towards the first water outlet 121, the first moving part 21 further reduces the opening degree of the first water outlet 121 to reduce the water flow rate of the first water outlet pipe 12, and correspondingly, the second moving part 22 exposes the second water outlet 131 to open the second water outlet pipe 13. The bypass duty ratio is dynamically adjusted by controlling the water flow ratio of the first water outlet pipe 12 and the second water outlet pipe 13 so as to maintain the constant water temperature output by the water heater.

In addition, when the user normally uses the water heater, the flow limiting assembly 2 will simultaneously adjust the opening of the first water outlet 121 and the second water outlet 131 when the user uses water twice in a short time, so as to reduce the flow of cold water flowing into the heat exchange tube and increase the bypass cold water, so as to increase the lowest temperature of water flowing out of the water heater, reduce the highest temperature of water flowing out of the water heater, further meet the requirement of constant-temperature water outlet of the water heater, and further improve the shower experience of the user.

In an embodiment of the present application, the first moving part 21 includes a mounting sleeve 211, a rotating shaft 212 and a plug 213, the mounting sleeve 211 is disposed in the valve housing 1, a threaded hole (not labeled) is disposed in the mounting sleeve 211, the rotating shaft 212 penetrates through the mounting sleeve 211, one end portion of the rotating shaft 212 extends out of the valve housing 1 and is connected with the driving part, the other end portion of the rotating shaft 212 extends to the first water outlet 121 and is provided with the plug 213, a threaded portion 2121 is disposed on the rotating shaft 212, the threaded portion 2121 is in threaded connection with the threaded hole, and the plug 213 is disposed opposite to the first water outlet 121.

Specifically, for the first water outlet pipe 12, the first water outlet 121 is disposed at a position of one end of the valve housing 1, and in order to realize that the first moving component 21 adjusts the opening of the first water outlet 121, the rotating shaft 212 is matched with the mounting sleeve 211, so that the rotating shaft 212 can also reciprocate along the axis of the valve housing 1 in the rotating process, and further the plug 213 is driven to approach or separate from the first water outlet 121, so as to realize that the opening of the first water outlet 121 is adjusted.

In another embodiment, in order to facilitate the driving of the second moving part 22 by the driving part, the second moving part 22 is an annular enclosure, which is arranged on the shaft 212 and rests against the inner wall of the valve housing 1.

Specifically, the annular enclosure is arranged on the rotating shaft 212, and the annular enclosure can rotate and move along with the rotating shaft 212 in the rotating and moving process of the rotating shaft 212. The annular enclosure is integrally in a cylindrical structure, and can well cover the second water outlet 131 in the process of driving the rotary shaft 212 to rotate, so as to ensure that the second water outlet 131 is in a closed state.

In another embodiment, when the opening degrees of the first water outlet 121 and the second water outlet 131 are adjusted, the water inflow of the water inlet pipe 11 can be adjusted synchronously for better adjusting the total water flow. Specifically, a water inlet 111 for water inflow is arranged in the water inlet pipe 11; one end of the annular enclosure is provided with a notch 221, and the notch 221 is configured to adjust the opening of the water inlet 111 during rotation.

Specifically, during the process of adjusting the first water outlet 121 and the water outlet through the flow-limiting assembly 2, especially during the process of reducing the opening of the first water outlet 121, the inflow of the water inlet pipe 11 is correspondingly throttled. Therefore, the water inflow and the water outflow can be matched more, the water temperature control precision is improved more favorably, and the experience of a user in using the water heater is improved.

In some embodiments, to ensure that the annular enclosure follows the smooth rotation of the shaft 212, the impact of water flow is reduced. The inner wall of the ring is provided with a plurality of protrusions 223, and the protrusions 223 are abutted against the outer wall of the mounting sleeve 211.

Specifically, in the rotation process of the annular enclosure of the rotating shaft 212, the annular enclosure is supported outside the mounting sleeve 211 through the protrusions 223, and smooth and reliable rotation of the annular enclosure is met by using the support of the mounting sleeve 211. In addition, even if water flows in the valve housing 1, under the supporting action of the protrusions 223, the annular surrounding block cannot be askew and dead due to water flow impact, so that the use reliability is improved.

In one embodiment, to facilitate the installation of the annular enclosure on the shaft 212, the shaft 212 is provided with a connecting rod 2122, and the annular enclosure is provided on the connecting rod 2122.

Specifically, a connecting rod 2122 extending in a direction perpendicular to the axis of the rotating shaft 212 is disposed on the rotating shaft 212, and an end portion of the connecting rod 2122 is clamped in the annular enclosure, so that the annular enclosure is mounted on the rotating shaft 212 and can rotate along with the rotating shaft 212. Meanwhile, the connecting rod 2122 can meet the requirement of the installation of the annular enclosure and simultaneously can also meet the requirement of the water flow flowing from the inner side of the annular enclosure so as to ensure the smooth flow of the water flow.

Wherein, the inner wall of the annular enclosure is provided with two clamping grooves 222, and the end part of the connecting rod 2122 is clamped in the corresponding clamping groove 222.

Specifically, in order to facilitate assembling the annular enclosure onto the rotating shaft 212, two clamping grooves 222 may be provided on the inner wall of the annular enclosure, and the end portion of the connecting rod 2122 may be clamped in the corresponding clamping groove 222, so as to complete the assembly.

In another embodiment, in order to facilitate installation of the rotating shaft 212, the first water outlet pipe 12 is provided with a hollow bracket 14, and an end portion of the rotating shaft 212 is rotatably disposed on the hollow bracket 14, and the hollow hole of the hollow bracket 14 forms the first water outlet 121.

Specifically, one end portion of the rotating shaft 212 extends out of the valve housing 1 to be supported by the valve housing 1 to meet the rotation requirement, and the end portion of the rotating shaft 212 located in the valve housing 1 is inserted into the hollow bracket 14 to support and mount the rotating shaft 212 through the hollow bracket 14.

In one embodiment, the second water outlet 131 does not need to have an excessively large cross section, and for this purpose, the second water outlet pipe 13 is provided with a partition 15, and the partition 15 is provided with the second water outlet 131.

Specifically, the second water outlet 131 is arranged on the partition plate 15, so that the processing requirement of the small-caliber second water outlet 131 can be better met. Also, the diaphragm 15 may be flush with the inner wall of the valve housing 1 so that the diaphragm 15 can be closely fitted with the annular enclosure when the second water outlet 131 is closed.

In one embodiment, for the driving part, a motor may be used, and the motor is installed outside the valve housing 1 and connected to the rotating shaft 212 to perform driving. In order to improve the sealing performance, at least one sealing ring 214 may be disposed between the rotating shaft 212 and the mounting sleeve 211 as required, and the sealing ring 214 is used to seal the gap between the mounting sleeve 211 and the rotating shaft 212 so as to prevent water leakage.

In another embodiment, since the driving part needs to be powered for driving, for convenience of power supply, the water inlet pipe 11 is further provided with a flow detector 3, the flow detector 3 comprises a hall switch 36, a sleeve 31, an impeller 32 and a supporting frame 33, the inlet of the sleeve is provided with a plurality of guide plates 34 which are obliquely arranged, free ends of the guide plates are connected through connecting posts 35, the supporting frame is arranged at the outlet of the sleeve, the impeller is arranged in the sleeve and is positioned between the supporting frame and the connecting posts, and the hall switch is arranged at one side of the impeller and is arranged outside the valve housing 1.

Specifically, the sleeve may be inserted into the water inlet pipe 11 to realize the installation of the flow detector 3 into the water inlet pipe 11, and in order to guide the water flow entering the sleeve so that the water flow can uniformly flow in the sleeve, a plurality of guide plates are arranged at the front end of the sleeve to guide the water flow by using the obliquely arranged guide plates. In addition, in the flowing process of the water flow in the sleeve, the impeller is driven to rotate, the Hall switch on the outer side senses that the impeller rotates, and then the water flow is obtained according to signals detected by the Hall switch.

The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A gas water heater, comprising:

the shell is provided with a water inlet main pipe and a water outlet main pipe;

the front panel and the rear panel of the combustion chamber are provided with upwards extending extension parts, and an installation area is formed between the two extension parts;

the heat exchanger comprises a heat exchange tube and two end plates, wherein the two end plates are oppositely arranged, and the heat exchange tube penetrates through the two end plates;

a fume collecting hood, on which a fan is arranged;

the mixing adjusting valve comprises a valve shell and a flow limiting assembly, wherein a water inlet pipe, a first water outlet pipe and a second water outlet pipe are arranged on the valve shell, a first water outlet for discharging water is arranged in the first water outlet pipe, a partition plate is arranged in the second water outlet pipe, a second water outlet is arranged on the partition plate, the water inlet pipe and the second book outlet pipe are arranged on the side wall of the valve shell, and the first water outlet pipe is arranged at one end part of the valve shell; the flow restricting assembly is disposed in the valve housing and configured to adjust the opening of the first and second water outlets;

the combustion chamber, the heat exchanger, the fume collecting hood and the mixing regulating valve are arranged in the shell, the fume collecting hood is arranged above the heat exchanger, the heat exchanger is arranged in the mounting area, the extension part is connected with the lower edge of the fume collecting hood, and the end plate is connected between the fume collecting hood and the side plate on the corresponding side of the combustion chamber; the water inlet pipe is connected with the water inlet main pipe, the first water outlet pipe is connected with the inlet of the heat exchange pipe, and the second water outlet pipe and the outlet of the heat exchange pipe are respectively connected with the water outlet main pipe.

2. The gas water heater as recited in claim 1, wherein a plurality of fins are further provided on the heat exchange tube, the fins being located between the two end plates.

3. A gas water heater according to claim 1, wherein the lower edge of the end plate overlaps the side plate on the corresponding side and the upper edge of the end plate overlaps the lower edge of the fume collecting hood.

4. A gas water heater as claimed in claim 1, wherein the extension overlaps the lower edge of the fume collecting hood.

5. The gas water heater according to claim 1, further comprising a preheating device, wherein the preheating device comprises a heat exchange box body and a preheating pipe, a communication port is arranged on the heat exchange box body, a smoke exhaust pipe is further arranged on the heat exchange box body, and the preheating pipe is positioned in the heat exchange box body; the heat exchange box body is arranged in the shell, the communication port is communicated with the smoke outlet of the smoke collecting hood, and the first water outlet pipe is connected with the heat exchange pipe through the preheating pipe.

6. The gas water heater of claim 1, wherein the flow restriction assembly comprises a drive member, a first moving member and a second moving member slidably disposed within the valve housing, the drive member configured to drive the first moving member and the second moving member to reciprocate within the valve housing, the first moving member configured to be positioned adjacent to or away from the first water outlet to adjust the opening of the first water outlet, and the second moving member configured to be positioned adjacent to or away from the second water outlet to adjust the opening of the second water outlet.

7. The gas water heater according to claim 6, wherein the first moving member includes a mounting sleeve provided in the valve housing, a rotating shaft provided with a screw hole therein, and a plug provided in the valve housing, the rotating shaft penetrating the mounting sleeve, one end portion of the rotating shaft extending to the outside of the valve housing and connected with the driving member, the other end portion of the rotating shaft extending to the first water outlet and provided with the plug, the rotating shaft being provided with a screw portion screw-coupled in the screw hole, the plug being disposed opposite to the first water outlet.

8. The gas water heater of claim 7, wherein the second moving member comprises an annular shroud disposed on the shaft and abutting against an inner wall of the valve housing.

9. The gas water heater as recited in claim 8, wherein a water inlet for water is provided in the water inlet pipe; one end of the annular enclosing shield is provided with a notch, and the notch is configured to adjust the opening of the water inlet in the rotation process.

10. The gas water heater according to claim 7, wherein a hollowed-out support is arranged in the first water outlet pipe, the end part of the rotating shaft is rotatably arranged on the hollowed-out support, and hollowed-out holes of the hollowed-out support form the first water outlet; and/or a baffle is arranged in the second water outlet pipe, and the second water outlet is arranged on the baffle.