CN220038753U

CN220038753U - Gas water heater

Info

Publication number: CN220038753U
Application number: CN202321334760.7U
Authority: CN
Inventors: 吴子天; 黄官贤; 田建均
Original assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-11-17
Anticipated expiration: 2033-05-25

Abstract

The utility model discloses a gas water heater. The gas water heater comprises a shell, a hot water supply module, a fresh air changing module and a filtering module. The shell is provided with an inner cavity, and an exhaust pipe is arranged on the shell. The hot water supply module is connected with the exhaust pipe. The fresh air exchanging module comprises a first fan, the gas water heater is provided with a fresh air channel, the first fan is used for enabling air to flow into the shell from an inlet of the fresh air channel and flow out of the shell from an outlet of the fresh air channel when the gas water heater works, and the gas water heater is provided with a fresh air channel; the gas water heater is provided with a filtering channel, the filtering module comprises a second fan and a filtering assembly, and the second fan is used for enabling air to flow through the filtering assembly and then enter the filtering channel and flow out of the shell from the filtering channel when the gas water heater works. In the gas water heater, the hot water supply module, the fresh air changing module and the filtering module are integrally and optimally combined, so that fresh air changing, oil fume filtering and odor removing and sterilizing functions can be realized while the gas water heater provides hot water, and the gas water heater is convenient to install.

Description

Gas water heater

Technical Field

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

Background

The existing household gas rapid water heater has single function and only provides domestic hot water. With the continuous improvement of the current living standard of people, the pursuit of comfort and cleanliness of the kitchen environment is a great trend, so that air management, sterilization and odor removal products in the kitchen are favored by more and more consumers. Traditional fresh air conditioner, kitchen super products need to install the off-premises station or singly open a hole in the kitchen to occupy valuable kitchen space, it is very inconvenient. In the aspect of sterilization and odor removal, only the traditional air purifier is easy to block by kitchen oil smoke to cause poor effect, and occupies kitchen space.

Disclosure of Invention

The embodiment of the utility model provides a gas water heater.

The embodiment of the utility model provides a gas water heater, which comprises:

the shell is provided with an inner cavity, and an exhaust pipe is arranged on the shell;

the hot water supply module is arranged in the inner cavity and is connected with the exhaust pipe;

the fresh air exchanging module is arranged in the inner cavity, the fresh air exchanging module comprises a first fan, the gas water heater is provided with a fresh air channel, the first fan is used for enabling air to flow into the shell from an inlet of the fresh air channel and flow out of the shell from an outlet of the fresh air channel when the gas water heater works, and the gas water heater is provided with a fresh air channel;

the filter module, filter module sets up in the inner chamber, gas heater is equipped with the filtration passageway, filter module includes second fan and filter assembly, the second fan is used for making the air flow through when the during operation filter assembly back entering the filtration passageway and follow the filtration passageway flows to outside the casing.

In the gas water heater, the hot water supply module, the fresh air changing module and the filtering module are integrally and optimally combined, so that fresh air changing, oil fume filtering and odor removing and sterilizing functions can be realized while the gas water heater provides hot water, and the gas water heater is convenient to install.

In certain embodiments, the gas water heater includes a collection housing within the housing, with a portion of the fresh air channel and a portion of the filtration channel formed therein.

Therefore, a part of the fresh air channel and a part of the filtering channel are formed in the air collecting cover, so that fresh outdoor air and/or filtered indoor air can be conveniently discharged into a room, and the purpose of purifying the indoor air is achieved.

In some embodiments, the casing is further provided with an air inlet pipe, the air inlet pipe and the air outlet pipe are coaxially arranged at the top of the casing, and a channel of the air inlet pipe forms a part of the fresh air channel.

Therefore, the air inlet pipe and the air outlet pipe are coaxially arranged, so that the gas water heater is convenient to install, neat and attractive.

In some embodiments, the channel of the air inlet pipe forms at least a part of the air inlet channel of the hot water supply module.

Therefore, the hot water supply module introduces air through the channel of the air inlet pipe so as to improve the efficiency of the gas water heater for supplying hot water.

In some embodiments, a first air inlet pipe and a second air inlet pipe are arranged on the shell, a channel of the first air inlet pipe forms at least one part of the fresh air channel, and a channel of the second air inlet pipe forms at least one part of an air inlet channel of the hot water supply module.

Therefore, the gas water heater is provided with the first air inlet pipe and the second air inlet pipe so as to accelerate the supply of fresh air, and further improve the working efficiency of the hot water supply module and the fresh air exchange module.

In some embodiments, the hot water supply module comprises a heat exchanger and a gas assembly, one end of the heat exchanger is connected with a cold water pipe, the cold water pipe is provided with a cold water inlet, the cold water inlet is provided with a water flow sensor, the other end of the heat exchanger is connected with a hot water pipe, and the hot water pipe is provided with a hot water outlet; the gas subassembly is connected the gas pipe, the gas pipe is equipped with the gas import, the gas import is equipped with the gas proportional valve, the gas subassembly is used for utilizing the gas to heat when burning the heat exchanger.

Therefore, the gas water heater heats the heat exchanger through the high-temperature flue gas generated by burning the gas by the gas assembly, so that the heat exchange efficiency of the heat exchanger and tap water is improved, and the supply speed of hot water is further improved.

In certain embodiments, the filter assembly includes a filter screen and a deodorizing and sterilizing module, the filter screen being coupled to the deodorizing and sterilizing module.

Therefore, the filter assembly realizes the multi-step filtering process of the indoor air through the filter screen and the odor removing and sterilizing module so as to realize the purpose of filtering and purifying the indoor air.

In certain embodiments, the filter screen is removable and/or the odor-free sterilization module is removable.

So, filter screen and the smell-removing module of disinfecting are detachable construction, and the filter component maintenance of being convenient for is changed, and then guarantees filter module's normal work.

In certain embodiments, the gas water heater further comprises a control device electrically connecting the hot water supply module, the first fan, and the second fan.

Therefore, the control device can control the free switching of the hot water supply mode, the fresh air exchange mode and the filtering mode so as to meet the actual demands of users.

In certain embodiments, the filtration channels are disposed in a partition from the interior cavity.

Therefore, the filtering channel is separated from the inner cavity, so that indoor air pollution is reduced or devices in the inner cavity are corroded, and the normal operation of the gas water heater is ensured.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the present utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

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

FIG. 2 is another schematic structural view of a gas water heater according to an embodiment of the present utility model;

fig. 3 is a flowchart of the operation of the gas water heater according to the embodiment of the present utility model.

Description of main reference numerals: the gas water heater comprises the following components, by weight, a gas water heater body 100, a shell 10, a hot water supply module 20, a fresh air exchanging module 30, a filtering module 40, a fresh air channel 50, a filtering channel 60, a wind collecting cover 70, a control device 80, an inner cavity 11, an exhaust pipe 12, an air inlet pipe 13, a heat exchanger 21, a gas assembly 22, a cold water pipe 23, a water flow sensor 24, a hot water pipe 25, a gas pipe 26, a gas proportional valve 27, a gas hot air fan 28, a first fan 31, a fresh air exchanging air outlet 32, a second fan 41, a filtering assembly 42, a filtering air outlet 43, a filter screen 421 and a smell cleaning and sterilizing module 422.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The disclosure herein provides many different embodiments or examples for implementing different structures of the utility model. To simplify the present disclosure, components and arrangements of specific examples are described herein. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to fig. 1 to 3, a gas water heater 100 according to an embodiment of the present utility model includes a housing 10, a hot water supply module 20, a fresh air exchange module 30 and a filtering module 40. The housing 10 is provided with an inner cavity 11, and the housing 10 is provided with an exhaust pipe 12. The hot water supply module 20 is disposed in the inner cavity 11, and the hot water supply module 20 is connected to the exhaust pipe 12. The fresh air exchanging module 30 is arranged in the inner cavity 11, the fresh air exchanging module 30 comprises a first fan 31, the gas water heater 100 is provided with a fresh air channel 50, the first fan 31 is used for enabling air to flow into the shell 10 from an inlet of the fresh air channel 50 and flow out of the shell 10 from an outlet of the fresh air channel 50 when the gas water heater works; the filter module 40 is disposed in the inner cavity 11, the gas water heater 100 is provided with a filter channel 60, the filter module 40 comprises a second fan 41 and a filter assembly 42, and the second fan 41 is used for enabling air to flow through the filter assembly 42, enter the filter channel 60 and flow out of the shell 10 from the filter channel 60 in operation.

In the above gas water heater 100, the hot water supply module 20, the fresh air exchange module 30 and the filtering module 40 are integrally and optimally combined, so that the functions of fresh air exchange, oil smoke filtering and odor removal sterilization can be realized while the gas water heater 100 provides hot water, and the installation is convenient.

Specifically, in one embodiment, the housing 10 may be a high temperature and corrosion resistant material to reduce the contamination and corrosion of the internal components of the hot water supply module 20, the fresh air exchange module 30, the filtration module 40, etc. by the oil smoke to extend the service life of the gas water heater 100. For example, the housing 10 may be made of stainless steel or other materials, and is not particularly limited herein.

The hot water supply module 20 may heat tap water by means of gas combustion to form hot water, thereby satisfying the hot water supply needs of users. The hot water supply module 20 is connected with the exhaust pipe 12, and the hot water supply module 20 can discharge the exhaust gas generated in the gas combustion process through the exhaust pipe 12 so as to ensure the cleanliness of the inner cavity 11 of the gas water heater 100.

The fresh air exchanging module 30 is used for guiding outdoor air into a room through the fresh air channel 50 so as to improve the freshness of the indoor air and further realize the purpose of indoor fresh air exchanging. In one embodiment, the fresh air channel 50 may be a space through which fresh outdoor air flows from an inlet of the fresh air channel 50 to an outlet of the fresh air channel 50.

The first fan 31 may be used to introduce fresh outdoor air into the fresh air duct 50, or to discharge fresh outdoor air from the fresh air duct 50 into the room, so as to increase the oxygen content and freshness of the indoor air. In one embodiment, the first fan 31 is provided with a fresh air outlet 32 through which fresh outdoor air is discharged indoors.

The filtering module 40 can be used for filtering greasy dirt, impurity particles or peculiar smell in indoor air, and discharging the filtered air into the room to improve the cleanliness of the indoor air, thereby achieving the purposes of filtering oil smoke and deodorizing and sterilizing.

A second fan 41 may be used to introduce indoor air into the filtration module 40. The indoor air is purified by the filtration of the filter assembly 42 and then enters the filter passage 60. The second fan 41 may also discharge the filtered indoor air from the filtering passage 60 into the room for the purpose of purifying the indoor air. In one embodiment, the second fan 41 is provided with a filtering outlet 43, and filtered indoor air is discharged into the room through the filtering outlet 43.

In one embodiment, the hot water module 20 further includes a combustion air heater 28. The hot air burner 28 may provide oxygen to the hot water module 20 so that the fuel gas is fully combusted, thereby improving the efficiency of heating tap water. The gas heater 28 can also exhaust the waste gas generated in the gas combustion process, so as to ensure the clean and tidy hot water supply module 20. The hot air burner 28 also resists wind pressure to prevent the flue gas from flowing backward such that the hot water supply module 20 may form secondary pollution.

Referring to FIG. 1, in certain embodiments, a gas water heater 100 includes a collection housing 70 within a housing 10, with a portion of a fresh air channel 50 and a portion of a filter channel 60 formed within the collection housing 70.

In this way, the fresh air duct 50 and the filtering duct 60 are formed in the air collecting hood 70, so that fresh outdoor air and/or filtered indoor air can be conveniently discharged into the room, thereby achieving the purpose of purifying indoor air.

Specifically, in one embodiment, as shown in fig. 1, the air collection cover 70 is connected to the fresh air outlet 32, such that a portion of the fresh air channel 50 is formed in the air collection cover 70. The air collection cover 70 is connected to the filtering outlet 43 such that a portion of the filtering passage 60 is formed in the air collection cover 70.

In one embodiment, the air collection cover 70 is connected to the fresh air outlet 32 to collect the outdoor air in the fresh air duct 50, and the outdoor air is discharged into the room through the first fan 31. The air collecting hood 70 is connected to the filtering outlet 43 to collect the filtered indoor air in the filtering passage 60, and discharges the filtered indoor air into the room through the second fan 41.

In some embodiments, the casing 10 is further provided with an air inlet pipe 13, the air inlet pipe 13 and the air outlet pipe 12 are coaxially arranged at the top of the casing 10, and a channel of the air inlet pipe 13 forms a part of the fresh air channel 50.

Thus, the air inlet pipe 13 and the air outlet pipe 12 are coaxially arranged, so that the gas water heater 100 is convenient to install, neat and attractive.

Specifically, in one embodiment, the fresh air channel 50 may be a space through which fresh outdoor air flows from an inlet of the fresh air channel 50 to an outlet of the fresh air channel 50.

One end of the air inlet pipe 13 may extend to the outside, and the passage of the air inlet pipe 13 forms a part of the fresh air passage 50, i.e., the air inlet pipe 13 may introduce fresh outdoor air through the fresh air passage 50.

In one embodiment, the air inlet pipe 13 and the air outlet pipe 12 are coaxially arranged, secondary holes are not required to be formed in the wall surface, the fresh air exchanging effect is ensured, and meanwhile, the volume of the gas water heater 100 can be effectively reduced, and the installation is convenient. Further, the air inlet pipe 13 and the air outlet pipe 12 are coaxially arranged, so that outdoor air can be accelerated to enter the inner cavity 11 through the air inlet pipe 13. The high temperature flue gas is rapidly discharged from the exhaust pipe 12 to the outside, so that the pressure at the air inlet pipe 13 is reduced, and the outdoor air is supplemented to the air inlet pipe 13 due to the air pressure difference to rapidly enter the inner cavity 11.

In some embodiments, the passage of the air inlet pipe 13 constitutes at least a part of an air inlet passage (not shown) of the hot water supply module 20.

In this manner, the hot water supply module 20 introduces air through the passage of the air inlet pipe 13 to improve the efficiency of the gas water heater 100 for supplying hot water.

Specifically, in one embodiment, the passage of the intake duct 13 may be a space from the inlet of the outdoor air to the air inlet of the hot water supply module 20.

The air inlet passage (not shown) of the hot water supply module 20 may include a passage of the air inlet pipe 13 and a space from the air inlet of the hot water supply module 20 to the gas combustion location. That is, the passage of the intake pipe 13 constitutes at least a part of the intake passage of the hot water supply module 20.

The hot water supply module 20 introduces fresh outdoor air through the passage of the air inlet pipe 13 to support combustion, so that the fuel gas is fully combusted, and hot water is rapidly formed.

In some embodiments, the housing 10 is provided with a first air inlet pipe (not shown) and a second air inlet pipe (not shown), wherein a channel of the first air inlet pipe forms at least a part of the fresh air channel 50, and a channel of the second air inlet pipe forms at least a part of an air inlet channel of the hot water supply module 20.

In this way, the gas water heater 100 accelerates the supply of fresh air by providing the first air inlet pipe and the second air inlet pipe, thereby improving the working efficiency of the hot water supply module 20 and the fresh air exchange module 30.

Specifically, in one embodiment, the gas water heater 100 may increase the supply amount of fresh air by providing two independent pipes to increase the efficiency of the hot water supply module 20 to supply hot water and/or the fresh air exchange module 30 to exchange fresh air while ensuring that the volume of the gas water heater 100 is unchanged.

In one embodiment, the hot water supply module 20 and the fresh air supply module 30 may introduce fresh outdoor air, respectively, by means of separate smoke pipes. In detail, the fresh air exchanging module 30 may introduce fresh outdoor air through the first air inlet duct to achieve the purpose of indoor fresh air exchanging. The hot water supply module 20 may introduce fresh outdoor air through the second air inlet pipe to supply oxygen so that the fuel gas is fully combusted to generate heat, thereby improving the efficiency of the fuel gas water heater 100 to supply hot water.

The passage of the first air inlet duct may be a space from an inlet of the outdoor air to an air inlet of the fresh air module 30. The fresh air channel 50 may include a channel of the first air intake duct and a space from an air inlet of the fresh air module 30 to the fresh air outlet 32. That is, the passage of the first intake pipe constitutes at least a part of the fresh air passage 50.

The passage of the second intake duct may be a space from the inlet of the outdoor air to the air inlet of the hot water supply module 20. The intake passage of the hot water supply module 20 may include a passage of the second intake pipe and a space from the air inlet of the hot water supply module 20 to the gas combustion location. That is, the passage of the second intake pipe constitutes at least a part of the intake passage of the hot water supply module 20.

In other embodiments, the air inlet pipe 13 may be formed with two air inlet passages, which may be a first air inlet pipe (not shown) and a second air inlet pipe (not shown), by providing two baffles to be spaced apart. That is, the separate passages of the hot water supply module 20 and the fresh air exchange module 30 can be realized by dividing the original air inlet pipe 13 to form two passages.

In some embodiments, the hot water supply module 20 comprises a heat exchanger 21 and a gas assembly 22, one end of the heat exchanger 21 is connected with a cold water pipe 23, the cold water pipe 23 is provided with a cold water inlet C, the cold water inlet C is provided with a water flow sensor 24, the other end of the heat exchanger 21 is connected with a hot water pipe 25, and the hot water pipe 25 is provided with a hot water outlet A; the gas assembly 22 is connected with a gas pipe 26, the gas pipe 26 is provided with a gas inlet B, the gas inlet B is provided with a gas proportional valve 27, and the gas assembly 22 is used for heating the heat exchanger 21 when the gas is used for combustion.

In this way, the gas water heater 100 heats the heat exchanger 21 through the high-temperature flue gas generated by the combustion of the gas by the gas assembly 22, so as to improve the heat exchange efficiency between the heat exchanger 21 and tap water, and further improve the supply speed of hot water.

Specifically, in one embodiment, the heat exchanger 21 may indirectly exchange heat of the high temperature flue gas generated by the combustion of the gas with tap water to generate hot water. The heat exchanger 21 may be, for example, a tube-fin heat exchanger, or may be another type of heat exchanger, and is not particularly limited herein.

In one embodiment, a water flow sensor 24 may be used to obtain a water flow signal from tap water at the cold water inlet C to control operation of the gas assembly 22. The water flow signal can be the flow of tap water.

When the hot water supply module 20 starts to work, the water flow sensor 24 acquires a water flow signal of tap water, and the gas assembly 22 is introduced with a proper amount of gas through the gas pipe 26 to generate high-temperature smoke so as to heat the heat exchanger 21.

The heat exchanger 21 transfers heat to tap water in the cold water pipe 23 to generate hot water, which is output through the hot water pipe 25.

In one embodiment, the gas pipe 26 is provided with a gas inlet B to feed gas to the hot water module 20.

The hot water pipe 25 is provided with a hot water outlet a, which may be provided with a tap, through which hot water may be provided to a user.

The gas assembly 22 may be used for combustion of gas to provide high temperature flue gas, which in turn heats the heat exchanger 21 to provide a source of heat for the hot water module 20.

The fuel gas proportional valve 27 can control the flow rate of fuel gas through the water flow signal obtained by the water flow sensor 24, so as to control the combustion power of the fuel gas.

In one embodiment, the gas assembly 22 further includes an ignition needle, a burner, and a gas distributor bar.

The ignition needle is used for igniting the gas and air mixture discharged by the fire discharge hole so as to provide high-temperature gas.

The heat exchanger 21 can be heated during combustion of the burner, and further, tap water in the cold water pipe 23 can be heated to generate hot water.

The gas dividing rod may be used to guide the gas flowing out of the gas proportional valve 27 into the burner.

In certain embodiments, filter assembly 42 includes a filter screen 421 and a odor elimination sterilization module 422, filter screen 421 being coupled to odor elimination sterilization module 422.

Thus, the filter assembly 42 realizes a multi-step filtering process for the indoor air through the filter screen 421 and the odor removal and sterilization module 422, so as to achieve the purpose of filtering and purifying the indoor air.

Specifically, the filter net 421 may be a corrosion-resistant and high temperature-resistant net structure for coarse filtration of large-particle impurities. In one embodiment, the filter screen 421 may be made of stainless steel, or may be made of other materials, which is not particularly limited herein.

The filter net 421 directly contacts with indoor air, and in case that the second fan 41 operates, the filter net 421 can filter soot and large particle impurities of the indoor air to realize a preliminary filtering process.

In one embodiment, the odor removal and sterilization module 422 may remove odor by activated carbon adsorption, or may remove odor by other means, without limitation. The deodorizing and sterilizing module 422 may be sterilized by high temperature steam generated by a steam generator, and may be sterilized by other means, without being particularly limited thereto.

The deodorizing and sterilizing module 422 is connected with the filter screen 421, and the deodorizing and sterilizing module 422 can remove peculiar smell and sterilize the primarily filtered indoor air to realize a multi-level filtering process.

In certain embodiments, filter screen 421 is removable and/or odor removal sterilization module 422 is removable.

Thus, the filter screen 421 and the deodorizing and sterilizing module 422 are both detachable structures, so that the filter assembly 42 is convenient to maintain and replace, and the normal operation of the filter module 40 is further ensured.

Specifically, in one embodiment, the filter screen 421 is a detachable structure, so that the filter screen 421 can be detached and cleaned at any time to ensure clean cleaning of the filter module 40.

The odor removing and sterilizing module 422 is of a detachable structure, so that the odor removing and sterilizing module 422 can be replaced with the odor removing agent at any time, and the maintenance of the odor removing and sterilizing module 422 is facilitated, and the normal operation of the filtering module 40 is further ensured.

Referring to fig. 1 and 3, in some embodiments, the gas water heater 100 further includes a control device 80, and the control device 80 is electrically connected to the hot water supply module 20, the first fan 31, and the second fan 41.

In this way, the control device 80 can control the free switching of the hot water supply mode, the fresh air exchange mode and the filtering mode so as to meet the actual requirements of users.

Specifically, in one embodiment, referring to fig. 3, the control device 80 may control to select a hot water supply mode, a fresh air exchange mode, and/or a filtering mode. And under the condition that a user uses the hot water instruction, the hot water supply mode is started. The hot water supply module 20 can operate at any time without being restricted by the fresh air exchange module 30 and the filtering module 40. In the case of receiving a user use fresh air change instruction, the control device 80 needs to further judge whether to turn on the fresh air change mode. When the hot water supply module 20 is operated, the control device 80 prompts that the fresh air change mode is temporarily disabled. When the hot water supply module 20 is not operated, the fresh air supply mode is turned on. The presentation means may be a beep sound to the control device 80 to prompt the user. And under the condition that a filtering instruction of a user is received, the filtering mode is started. The filtering module 40 can operate at any time without being restricted by the hot water supply module 20 and the fresh air exchange module 30.

It should be noted that, in the case of starting the hot water supply mode, the control device 80 determines whether the fresh air exchange mode and the filtration mode are on. If the fresh air changing mode is working, the fresh air changing mode is turned off when the hot water supplying mode is started. If the filtration mode is operating, the filtration mode operates normally when the hot water supply mode is started. If the fresh air exchanging mode and the filtering mode are both working, when the hot water supplying mode is started, the fresh air exchanging mode is only closed.

The control device 80 defaults to the hot water supply mode. Upon receiving a user instruction to use hot water, the control device 80 obtains a water flow signal through the water flow sensor 24 by opening a water tap connected to the hot water outlet a to turn on the hot water supply mode. At this time, the combustion air heater 28 is started, the ignition needle discharges, the gas proportional valve 27 is opened, the gas enters the burner for mixed combustion after being regulated by the gas proportional valve 27, the high-temperature flue gas generated by the gas combustion heats the heat exchanger 21, the heat exchanger 21 indirectly exchanges heat with tap water to provide hot water, and the high-temperature flue gas is discharged outdoors through the exhaust pipe 12.

In the case of receiving a user use fresh air change instruction, the control device 80 needs to further judge whether to turn on the fresh air change mode. When the hot water supply module 20 is operated, the control device 80 prompts that the fresh air change mode is temporarily disabled. When the hot water supply module 20 is not operated, the fresh air supply mode is turned on. At this time, the first fan 31 is started, fresh outdoor air enters the gas water heater 100 through the air inlet pipe 13, the outdoor air is blown into the room through the air collecting cover 70 by the first fan 31, and the fresh air exchanging mode is closed after the fresh air exchanging process is completed.

And under the condition that a filtering instruction of a user is received, the filtering mode is started. At this time, the second fan 41 is started, the indoor air enters the filtering passage 60 through the filter screen 421 and the deodorizing and sterilizing module 422, the second fan 41 blows the filtered air into the room through the air collecting hood 70 to complete the purification process of the indoor air, and the filtering mode is closed. Wherein, filter screen 421 is used for initially filtering oil smoke and larger particle impurities in the indoor air, and odor removal and sterilization module 422 is used for removing odor and bacteria in the indoor air.

And under the condition that a user simultaneously uses the fresh air changing instruction and the filtering instruction, simultaneously starting the fresh air changing mode and the filtering mode. To avoid redundancy, no further description is provided herein.

Under the condition that a user simultaneously uses the hot water supply instruction and the filtering instruction, the hot water supply mode and the filtering mode are started simultaneously. To avoid redundancy, no further description is provided herein.

Referring to fig. 1, in some embodiments, the filter passages 60 are isolated from the interior cavity 11.

In this way, the filtering passage 60 is isolated from the inner cavity 11, so that indoor air pollution is reduced or devices in the inner cavity 11 are corroded, and normal operation of the gas water heater 100 is ensured.

Specifically, in one embodiment, the filter channels 60 are independently provided to ensure the filtering effect of the filter mesh 421 and the deodorizing and sterilizing effect of the deodorizing and sterilizing module 422. Further, the filtering passage 60 is independently provided such that the indoor air is separated from the inner chamber 11, preventing the indoor air from polluting or corroding devices in the inner chamber 11, thereby ensuring the normal operation of the hot water supply module 20 and the fresh air exchange module 30.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A gas water heater, comprising:

2. The gas water heater of claim 1, including a collection hood within the housing, the collection hood having a portion of the fresh air channel and a portion of the filter channel formed therein.

3. The gas water heater according to claim 1, wherein the housing is further provided with an air inlet pipe, the air inlet pipe and the air outlet pipe are coaxially arranged at the top of the housing, and a passage of the air inlet pipe forms a part of the fresh air passage.

4. A gas water heater according to claim 3, wherein the passage of the inlet pipe constitutes at least part of the inlet passage of the hot water supply module.

5. The gas water heater according to claim 1, wherein a first gas inlet pipe and a second gas inlet pipe are provided on the housing, a passage of the first gas inlet pipe forming at least a part of the fresh air passage, and a passage of the second gas inlet pipe forming at least a part of the gas inlet passage of the hot water supply module.

6. The gas water heater according to claim 1, wherein the hot water supply module comprises a heat exchanger and a gas assembly, one end of the heat exchanger is connected with a cold water pipe, the cold water pipe is provided with a cold water inlet, the cold water inlet is provided with a water flow sensor, the other end of the heat exchanger is connected with a hot water pipe, and the hot water pipe is provided with a hot water outlet; the gas subassembly is connected the gas pipe, the gas pipe is equipped with the gas import, the gas import is equipped with the gas proportional valve, the gas subassembly is used for utilizing the gas to heat when burning the heat exchanger.

7. The gas water heater of claim 1, wherein the filter assembly comprises a filter screen and a deodorizing and sterilizing module, the filter screen being connected to the deodorizing and sterilizing module.

8. The gas water heater of claim 7, wherein the filter screen is removable and/or the odor removal and sterilization module is removable.

9. The gas water heater of claim 1, further comprising a control device electrically connecting the hot water supply module, the first fan, and the second fan.

10. The gas water heater of claim 1, wherein the filter passage is disposed in a spaced relationship from the interior cavity.