Gas water heater

Abstract

The invention discloses a gas water heater. The gas water heater comprises a mounting shell, a heating assembly, an airflow buffer part and a liquid conveying pipe. The heating assembly is arranged in the mounting shell and defines a heating space, and a first air outlet hole is formed in the top of the heating assembly; the airflow buffering part comprises a buffering shell and a blocking part, the bottom of the buffering shell is connected and matched with the first air outlet hole, the top of the buffering shell extends out of the mounting shell, a buffering space is defined by the buffering shell, the blocking part is arranged in the buffering shell and divides the buffering space into an air inlet channel and an air outlet channel, and the air inlet channel communicates with the air outlet channel; the bottom wall of the buffer shell is provided with a second air inlet hole communicating with the air inlet channel and the heating space, the top wall of the buffer shell is provided with a second air outlet hole communicating with the air outlet channel, and the blocking piece is used for blocking smoke. The liquid conveying pipe sequentially penetrates through the airflow buffering piece and the heating assembly, and the smoke is used for heating liquid in the liquid conveying pipe. The noise generated when smoke penetrates through the second air outlet hole can be reduced, and smoke waste heat can be recycled.

Description

Technical Field

[0001] This application relates to the field of water heaters, and more particularly to a gas water heater. Background Art

[0002] In related technologies, a gas water heater burns gas to generate flue gas, and the flue gas is used to heat the liquid in the liquid delivery pipe of the gas water heater. The flue gas flows out of the gas water heater through the exhaust hole at the top of the hot water heater. The gas water heater needs to inhale gas at high speed and discharge flue gas at high speed to maintain the temperature inside the gas water heater within a preset safe temperature value. When the flue gas passes through the exhaust hole, the high-speed flue gas collides with the exhaust hole and generates noise, reducing the user experience of the gas water heater. Moreover, the waste heat of the flue gas cannot be effectively recovered and utilized, reducing the energy utilization rate of the gas water heater. Summary of the Invention

[0003] In order to reduce the noise when the flue gas passes through the exhaust hole, improve the user experience of the gas water heater, and improve the energy utilization rate of the gas water heater, this application provides a gas water heater.

[0004] A gas water heater provided by this application adopts the following technical solutions: A gas water heater includes: a mounting housing that defines a mounting space communicating with the external environment; a heating assembly disposed within the mounting housing, the heating assembly defining a heating space, a first intake hole provided at the bottom of the heating assembly, and a first outlet hole provided at the top of the heating assembly, both the first intake hole and the first outlet hole communicating with the heating space.

[0005] An air flow buffer member, the air flow buffer member including a buffer housing and a blocking member, the bottom of the buffer housing being connected and cooperating with the first outlet hole, the top of the buffer housing extending out of the mounting housing, the buffer housing defining a buffer space, the blocking member being disposed within the buffer housing, the blocking member dividing the buffer space into an intake passage and an outlet passage, and the intake passage and the outlet passage being in communication, a second intake hole provided at the bottom wall of the buffer housing, the second intake hole communicating with both the intake passage and the heating space, a second outlet hole provided at the top wall of the buffer housing communicating with the outlet passage, the flue gas passing through the intake passage and the outlet passage in sequence, and the blocking member being used to block the flue gas.

[0006] A liquid delivery pipe that sequentially passes through the air flow buffer member and the heating assembly, and the flue gas within the heating assembly and the air flow buffer member is used to heat the liquid within the liquid delivery pipe.

[0007] By adopting the above technical solution, by arranging a blocking member in the buffer housing, after the flue gas enters the buffer housing, the flue gas is blocked by the blocking member to reduce the speed of the flue gas, and the flue gas heats the liquid in the liquid delivery pipe in the buffer housing. Compared with the prior art, when the flue gas passes through the second air outlet hole, the intensity of the collision impact between the flue gas and the second air outlet hole can be reduced, so that the noise when the flue gas passes through the second air outlet hole can be reduced, and further the use experience of the gas water heater can be improved, and the technical effect of recycling the waste heat of the flue gas can be achieved, thereby improving the energy utilization rate of the gas water heater.

[0008] Preferably, there are a plurality of the blocking members, and the plurality of blocking members are sequentially spaced apart along the radial direction of the buffer housing. One of any two adjacent blocking members is arranged on the inner top wall of the buffer housing, and the other is arranged on the inner bottom wall of the buffer housing. Along the radial direction of the buffer housing, the innermost blocking member among the plurality of blocking members is arranged on the inner bottom wall of the buffer housing and is annularly arranged outside the second air inlet hole, and the outermost blocking member among the plurality of blocking members is arranged on the inner top wall of the buffer housing. A buffer channel is defined between any two adjacent blocking members, the buffer channel is located between the air inlet channel and the air outlet channel, and the buffer channel is communicated with both the air inlet channel and the air outlet channel.

[0009] By adopting the above technical solution, when the flue gas enters the air inlet channel, the flue gas passes through at least one buffer channel and enters the air outlet channel. When the flue gas passes through the buffer channel, the flue gas is jointly blocked by a plurality of blocking members, so that the speed of the flue gas can be further reduced, the intensity of the collision impact between the flue gas and the second air outlet hole can be further reduced, and further the noise when the flue gas passes through the second air outlet hole can be further reduced.

[0010] Preferably, there are a plurality of the second air outlet holes, and a plurality of flow dividing members are arranged in the air outlet channel. The plurality of second air outlet holes and the plurality of flow dividing members are both spaced apart along the circumferential direction of the buffer housing, and the plurality of flow dividing members are arranged in one-to-one correspondence with the plurality of second air outlet holes. One end of the flow dividing member is arranged on the inner top wall of the buffer housing, and the other end extends towards the bottom wall of the buffer housing. The flow dividing member is connected between the inner peripheral wall of the buffer housing and the blocking member, and the flow dividing member is used for dividing and buffering the flue gas.

[0011] By adopting the above technical solution, by arranging a plurality of second air outlet holes, the flue gas flows out of the buffer housing from the plurality of second air outlet holes, and the plurality of flow dividing members simultaneously divide the flue gas, so that the flue gas can be prevented from concentrating at one second air outlet hole as much as possible, the situation that the heating component is difficult to inhale cold air due to the flue gas not being able to be discharged from the buffer housing in time can be avoided, and the temperature of the heating component being higher than the preset safety temperature value can be avoided, and further the working reliability of the gas water heater can be improved.

[0012] Preferably, the gas water heater further includes an exhaust assembly. An exhaust hole and a receiving hole are provided in the top wall of the buffer housing. The receiving hole is opposite to and communicated with the intake passage. A shielding member is provided to cover the end wall of the exhaust hole close to the intake passage. The shielding member is opposite to the intake passage and defines an exhaust passage. At least one communication hole is provided in the outer peripheral wall of the shielding member. The exhaust hole, the communication hole, the exhaust passage, and the intake passage are communicated with each other in pairs. The exhaust assembly includes a cover body and a driving member. The cover body is pivotally provided at the exhaust hole. The driving member is movably provided in the receiving hole and is in transmission connection with the cover body. The driving member is adapted to be driven by the flue gas to drive the cover body to rotate around the pivot axis of the cover body, so as to open the exhaust hole by the cover body.

[0013] By adopting the above technical solution, when the air pressure value in the buffer housing is greater than or equal to the preset air pressure value, the flue gas in the intake passage drives the driving member to move away from the intake passage through the receiving hole. The driving member drives the cover body to rotate around the pivot axis between the cover body and the exhaust hole to open the exhaust hole. The flue gas in the intake passage directly flows out of the buffer housing through the exhaust hole, so that the speed of the flue gas flowing out of the buffer housing through the second air outlet hole can be avoided from being too slow, the accumulation of the flue gas in the buffer housing and the combustion chamber of the heating assembly can be avoided, the difficulty of the fan to blow the cold gas in the external environment into the combustion chamber can be avoided, and the temperature of the combustion chamber exceeding the preset safety temperature value can be avoided. Furthermore, the working reliability of the gas water heater can be improved.

[0014] Preferably, the driving member includes a driving portion and a counterweight portion. The driving portion is connected and cooperated with the counterweight portion, and the counterweight portion is located at the end of the receiving hole close to the intake passage. The driving portion is in transmission connection with the cover body. When the counterweight portion is driven by the flue gas, the counterweight portion drives the driving portion to drive the cover body to rotate to open the exhaust hole. When the counterweight portion is not driven by the flue gas, the counterweight portion drives the driving portion to drive the cover body to rotate to close the exhaust hole.

[0015] By adopting the above technical solution, the flue gas drives the counterweight portion to drive the driving portion to move away from the intake passage. The driving portion drives the cover body to rotate to open the exhaust hole. When the air pressure value in the buffer housing is less than the preset air pressure value, under the action of gravity, the counterweight portion drives the driving portion to move close to the intake passage. The driving portion drives the cover body to rotate to close the exhaust hole, so that the technical effect that the driving member drives the cover body to open or close the exhaust hole according to the air pressure value in the buffer housing can be achieved.

[0016] Preferably, the cover body has a pivot shaft, the pivot shaft is pivotally connected to the inner peripheral wall of the exhaust hole, one end of the pivot shaft extends into the receiving hole and a driven gear is provided around the end portion, the driving portion is provided with a driving gear, and the driving gear is meshed with the driven gear.

[0017] By adopting the above technical solution, when the counterweight portion drives the driving portion to move close to or away from the intake passage, the driving portion drives the pivot shaft to rotate through the driving gear and the driven gear, and the pivot shaft drives the cover body to rotate around the central axis of the pivot shaft, so as to achieve the technical effect that the driving portion drives the cover body to rotate to open or close the exhaust hole.

[0018] Preferably, a limiting groove is provided on the inner peripheral wall of the receiving hole, the counterweight portion is movably arranged in the limiting groove and is adapted to be in limiting cooperation with the limiting groove.

[0019] By adopting the above technical solution, when the counterweight portion is driven by the flue gas to move away from the intake passage, the counterweight portion abuts against and is in limiting cooperation with the top wall of the limiting groove. When the counterweight portion moves close to the intake passage under the action of gravity, the counterweight portion abuts against and is in limiting cooperation with the bottom wall of the limiting groove. By the limiting cooperation between the counterweight portion and the limiting groove, it is possible to prevent the driving member from moving close to the intake passage and disengaging from the receiving hole under the action of gravity, thereby improving the working reliability of the gas water heater.

[0020] Preferably, the infusion tube includes a liquid inlet tube, a preheating tube and a liquid outlet tube. One end of the liquid inlet tube is communicated with one end of the preheating tube, the other end of the preheating tube passes through the air flow buffer member and is communicated with one end of the liquid outlet tube, the other end of the liquid outlet tube passes through the heating assembly, liquid flows in from the end of the liquid inlet tube far away from the preheating tube, and flows out from the end of the liquid outlet tube far away from the preheating tube. The preheating tube forms a heat exchange portion in the buffer housing, the heat exchange portion is spirally wound around the outer peripheral wall of the blocking member, and the flue gas is used to heat the liquid in the heat exchange portion.

[0021] By adopting the above technical solution, the preheating tube forms a heat exchange portion in the buffer housing, and the heat exchange portion is spirally wound around the outer peripheral wall of the blocking member, so that the time for the liquid in the preheating tube to pass through the buffer housing can be prolonged, the flue gas can fully exchange heat with the liquid in the heat exchange portion, so that the waste heat of the flue gas can be recycled as much as possible, and further the energy utilization rate of the gas water heater can be improved.

[0022] Preferably, the gas water heater further includes: a direction control valve, a water pressure detection component, and a controller. The direction control valve is provided with a first liquid inlet end, a first liquid outlet end, a second liquid inlet end, and a second liquid outlet end. The liquid inlet pipe is communicated with the first liquid inlet end. One end of the preheating pipe is communicated with the first liquid outlet end, and the other end of the preheating pipe is communicated with the second liquid inlet end. The end of the liquid outlet pipe far away from the heating component is communicated with the second liquid outlet end. The direction control valve is used to connect or block the first liquid inlet end and the first liquid outlet end, and to connect or block the first liquid inlet end and the second liquid outlet end, and to connect or block the second liquid inlet end and the second liquid outlet end. The water pressure detection component is arranged at the end of the liquid outlet pipe far away from the direction control valve, and the water pressure detection component is used to detect the water pressure of the liquid outlet pipe. Both the direction control valve and the water pressure detection component are communicatively connected with the controller, and the controller is used to control the working state of the direction control valve according to the detection signal of the water pressure detection component.

[0023] By adopting the above technical solution, when the water pressure value in the liquid outlet pipe is greater than or equal to the preset water pressure value, the water pressure detection component generates a first detection signal, and the controller controls the direction control valve to connect the first liquid inlet end and the first liquid outlet end, and to connect the first liquid inlet end and the second liquid outlet end, and to connect the second liquid inlet end and the second liquid outlet end according to the first detection signal of the water pressure detection component. The liquid in the liquid inlet pipe flows into the preheating pipe and the liquid outlet pipe at the same time. The liquid in the preheating pipe is heated by the flue gas and then flows into the liquid outlet pipe. The liquid in the liquid outlet pipe is heated by the heating component. Such a setting can not only achieve the technical effect of recycling the waste heat of the flue gas, but also achieve the technical effect of quickly discharging hot water at the same time. And when the water pressure value in the liquid outlet pipe is less than the preset water pressure value, the water pressure detection component generates a second detection signal, and the controller controls the direction control valve to block the first liquid inlet end and the first liquid outlet end, and to connect the first liquid inlet end and the second liquid outlet end, and to block the second liquid inlet end and the second liquid outlet end according to the second detection signal of the water pressure detection component. The liquid in the liquid inlet pipe directly flows into the liquid outlet pipe, so as to prevent the preheating pipe from diverting the liquid in the liquid inlet pipe and causing the water pressure of the liquid outlet pipe to drop, and can avoid the reduction of the water outlet speed of the liquid outlet pipe, and further improve the use experience of the gas water heater.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. By arranging a blocking member in the buffer housing, after the flue gas enters the buffer housing, the flue gas is blocked by the blocking member to reduce the speed of the flue gas, and the flue gas heats the liquid in the liquid delivery pipe in the buffer housing. Compared with the prior art, when the flue gas passes through the second air outlet hole, the intensity of the collision impact between the flue gas and the second air outlet hole can be reduced, so that the noise when the flue gas passes through the second air outlet hole can be reduced, and further the use experience of the gas water heater can be improved, and the technical effect of recycling the waste heat of the flue gas can be achieved, thereby improving the energy utilization rate of the gas water heater; 2. By providing a plurality of second air outlet holes, the flue gas flows out of the buffer housing through the plurality of second air outlet holes, and the plurality of flow splitting members simultaneously split the flue gas, so as to avoid as much as possible the concentration of the flue gas at one second air outlet hole, prevent the flue gas from failing to be discharged from the buffer housing in time, which may cause difficulty for the heating assembly to inhale cold air, and prevent the temperature of the heating assembly from being higher than the preset safe temperature value, thereby improving the working reliability of the gas water heater; 3. By forming a heat exchange part in the buffer housing through the preheating pipe, and the heat exchange part is spirally wound around the outer peripheral wall of the blocking member, the time for the liquid in the preheating pipe to pass through the buffer housing can be prolonged, and the flue gas can fully exchange heat with the liquid in the heat exchange part, so as to recover and utilize the waste heat of the flue gas as much as possible, thereby further improving the energy utilization rate of the gas water heater. Description of the Drawings

[0025] Figure 1 is a schematic diagram of the gas water heater according to the present application; Figure 2 is Figure 1 an enlarged schematic view of part A in Figure 3 is a cross-sectional view of the gas water heater according to the present application; Figure 4 is Figure 3 an enlarged schematic view of part B in Figure 5 is a schematic diagram of a partial structure of the air flow buffer member and the liquid delivery pipe according to the present application; Figure 6 is a cross-sectional view of a partial structure of the gas water heater according to the present application; Figure 7 is Figure 6 an enlarged schematic view of part C in

[0026] Description of the Reference Numerals: 100, gas water heater; 1, installation housing; 11, installation space; 2, heating assembly; 21, heating space; 22, first air inlet hole; 23, first air outlet hole; 24, fan; 25, burner; 26, heat exchanger; 27, combustion chamber; 3, air flow buffer member; 31, buffer housing; 311, buffer space; 312, air inlet channel; 313, air outlet channel; 314, second air inlet hole; 315, second air outlet hole; 316, flow splitting member; 317, exhaust hole; 318, accommodation hole; 3181, limiting groove; 319, shielding member; 3191, exhaust channel; 3192, communication hole; 32, blocking member; 321, buffer channel; 4. Infusion tube; 41. Liquid inlet tube; 42. Preheating tube; 421. Heat exchange part; 43. Liquid outlet tube; 5. Exhaust assembly; 51. Cover body; 511. Pivot shaft; 512. Driven gear; 52. Driving part; 521. Driving portion; 522. Counterweight portion; 523. Driving gear; 6. Direction control valve; 61. First liquid inlet end; 62. First liquid outlet end; 63. Second liquid inlet end; 64. Second liquid outlet end; 7. Water pressure detection part. Detailed implementation mode

[0027] The following will Figures 1 - 7 make a further detailed description of this application.

[0028] An embodiment of this application discloses a gas water heater 100.

[0029] Refer to Figure 1 , Figure 3 and Figure 4 , the gas water heater 100 according to the embodiment of this application includes: an installation housing 1, a heating assembly 2, an air flow buffer 3, and an infusion tube 4. The installation housing 1 defines an installation space 11, and the installation space 11 communicates with the external environment. Specifically, a plurality of through holes are provided on the outer peripheral wall of the installation, and the plurality of through holes communicate with both the installation space 11 and the external environment. The gas in the external environment enters the installation housing 1 through the through holes on the outer peripheral wall of the installation housing 1.

[0030] The heating assembly 2 is arranged in the installation housing 1. The heating assembly 2 defines a heating space 21. A first air inlet hole 22 is provided at the bottom of the heating assembly 2, and a first air outlet hole 23 is provided at the top of the heating assembly 2. Both the first air inlet hole 22 and the first air outlet hole 23 communicate with the heating space 21.

[0031] Specifically, the heating assembly 2 includes a fan 24, a burner 25, a heat exchanger 26, and a combustion chamber 27. The combustion chamber 27 defines the heating space 21. Along the height direction of the installation housing 1, the burner 25 is arranged in the combustion chamber 27 and located at the bottom of the combustion chamber 27, the heat exchanger 26 is arranged in the combustion chamber 27 and located at the top of the combustion chamber 27, the fan 24 is arranged on the outer bottom wall of the combustion chamber 27, a first air inlet hole 22 is provided on the bottom wall of the combustion chamber 27, a first air outlet hole 23 is provided at the top of the combustion chamber 27, the fan 24 is opposite to and communicates with the first air inlet hole 22, the fan 24 blows air into the combustion chamber 27 through the first air inlet hole 22, the burner 25 is used to burn gas to heat the air, the burned air is converted into flue gas, the flue gas exchanges heat with the liquid in the heat exchanger 26 to heat the liquid, after the heat exchange between the flue gas and the liquid is completed, the flue gas flows out of the combustion chamber 27 through the first air outlet hole 23. The height direction of the installation housing 1 may refer to Figure 3 the up and down direction in

[0032] The air flow buffer member 3 includes a buffer housing 31 and a blocking member 32. The bottom of the buffer housing 31 is connected and cooperated with the first air outlet hole 23. The top of the buffer housing 31 extends out of the installation housing 1. The buffer housing 31 defines a buffer space 311. The blocking member 32 is arranged in the buffer housing 31. The blocking member 32 divides the buffer space 311 into an air inlet channel 312 and an air outlet channel 313, and the air inlet channel 312 and the air outlet channel 313 are communicated. The bottom wall of the buffer housing 31 is provided with a second air inlet hole 314, and the second air inlet hole 314 is communicated with both the air inlet channel 312 and the heating space 21. The top wall of the buffer housing 31 is provided with a second air outlet hole 315 communicated with the air outlet channel 313. The flue gas sequentially passes through the air inlet channel 312 and the air outlet channel 313, and the blocking member 32 is used to block the flue gas.

[0033] In some specific embodiments, along the first direction of the buffer housing 31, the first direction of the buffer housing 31 can be Figure 3 the left - right direction as shown in the figure. The left end of the blocking member 32 is connected and cooperated with the inner left side wall of the buffer housing 31, and the right end of the blocking member 32 is spaced apart from the inner right side wall of the buffer housing 31. Along the height direction of the buffer housing 31, the air inlet channel 312 is located below the air outlet channel 313.

[0034] Specifically, after the flue gas flows out of the heating assembly 2, the flue gas flows into the air inlet channel 312 through the second air inlet hole 314. The flue gas is blocked by the blocking member 32, and the flue gas cannot directly pass through the buffer housing 31 and flow out of the buffer housing 31 from the second air outlet hole 315. The flue gas sequentially passes through the air inlet channel 312 and the air outlet channel 313, and then the flue gas flows out of the buffer housing 31 from the second air outlet hole 315.

[0035] Moreover, during the process that the flue gas sequentially passes through the air inlet channel 312 and the air outlet channel 313, the flue gas is blocked by the blocking member 32 to reduce the speed of the flue gas, and then the flue gas flows towards the air inlet channel 312 and flows out of the buffer housing 31 through the second air outlet hole 315. When the flue gas passes through the second air outlet hole 315, the intensity of the collision impact between the flue gas and the second air outlet hole 315 can be reduced, so that the noise when the flue gas passes through the second air outlet hole 315 can be reduced.

[0036] In some specific embodiments, the shape of the buffer housing 31 and the shape of the blocking member 32 can both be constructed as annular. In some other specific embodiments, the shape of the buffer housing 31 and the shape of the blocking member 32 can both be constructed as square.

[0037] Furthermore, a sound - absorbing cotton can be arranged on the outer peripheral wall of the buffer housing 31.

[0038] The infusion tube 4 sequentially passes through the gas flow buffer member 3 and the heating assembly 2. The flue gas in the heating assembly 2 and the gas flow buffer member 3 is used to heat the liquid in the infusion tube 4. Specifically, the liquid in the infusion tube 4 sequentially flows through the gas flow buffer member 3 and the heating assembly 2. In the gas flow buffer member 3, heat exchange occurs between the flue gas and the infusion tube 4, thereby achieving the technical effect of heating the liquid in the infusion tube 4 with the flue gas to realize the technical effect of recycling the waste heat of the flue gas. The liquid heated by the flue gas flows into the heating assembly 2, and the heating assembly 2 heats the liquid in the infusion tube 4. Finally, the liquid heated by the heating assembly 2 flows out of the infusion tube 4 of the gas water heater 100.

[0039] Thus, by providing the blocking member 32 in the buffer housing 31, after the flue gas enters the buffer housing 31, the flue gas is blocked by the blocking member 32 to reduce the speed of the flue gas, and the flue gas heats the liquid in the infusion tube 4 in the buffer housing 31. Compared with the prior art, when the flue gas passes through the second air outlet hole 315, the intensity of the collision impact between the flue gas and the second air outlet hole 315 can be reduced, thereby reducing the noise when the flue gas passes through the second air outlet hole 315, further improving the user experience of the gas water heater 100, and being able to achieve the technical effect of recycling the waste heat of the flue gas, thereby improving the energy utilization rate of the gas water heater 100.

[0040] Refer to Figure 3 and Figure 4 , in some embodiments of the present application, there are multiple blocking members 32, and the multiple blocking members 32 are sequentially spaced apart from each other in the radial direction of the buffer housing 31 from the inside to the outside. One of any two adjacent blocking members 32 is provided on the inner top wall of the buffer housing 31, and the other blocking member 32 is provided on the inner bottom wall of the buffer housing 31. The blocking member 32 provided on the inner top wall of the buffer housing 31 is spaced apart from the inner bottom wall of the buffer housing 31, and the blocking member 32 provided on the inner bottom wall of the buffer housing 31 is spaced apart from the inner top wall of the buffer housing 31. In the radial direction of the buffer housing 31, the innermost blocking member 32 among the multiple blocking members 32 is provided on the inner bottom wall of the buffer housing 31 and is annularly arranged outside the second air inlet hole 314, and the outermost blocking member 32 among the multiple blocking members 32 is provided on the inner top wall of the buffer housing 31.

[0041] That is to say, in the direction from the inside to the outside in the radial direction of the buffer housing 31, the blocking member 32 close to the second air inlet hole 314 among the multiple blocking members 32 is provided on the inner bottom wall of the buffer housing 31, and the second air inlet hole 314 is covered by the blocking member 32 close to the second air inlet hole 314 among the multiple blocking members 32, and the blocking member 32 close to the inner peripheral wall of the buffer housing 31 among the multiple blocking members 32 is provided on the inner top wall of the buffer housing 31.

[0042] Moreover, in the radial direction of the buffer housing 31, the intake channel 312 is located inside the innermost blocking member 32 among the plurality of blocking members 32, and the outlet channel 313 is located between the inner peripheral wall of the buffer housing 31 and the outer peripheral wall of the outermost blocking member 32 among the plurality of blocking members 32.

[0043] A buffer channel 321 is defined between any two adjacent blocking members 32. The buffer channel 321 is located between the intake channel 312 and the outlet channel 313, and the buffer channel 321 communicates with both the intake channel 312 and the outlet channel 313.

[0044] Specifically, when the flue gas enters the intake channel 312, the flue gas passes through at least one buffer channel 321 and enters the outlet channel 313. When the flue gas passes through the buffer channel 321, the flue gas is jointly blocked by the plurality of blocking members 32, so that the speed of the flue gas can be further reduced, the intensity of the collision impact between the flue gas and the second outlet hole 315 can be further reduced, and thus the noise when the flue gas passes through the second outlet hole 315 can be further reduced.

[0045] Referring to Figure 4 and Figure 5 , in some embodiments of the present application, there are a plurality of second outlet holes 315, and a plurality of flow dividing members 316 are provided in the outlet channel 313. The plurality of second outlet holes 315 and the plurality of flow dividing members 316 are both arranged at intervals in the circumferential direction of the buffer housing 31, and the plurality of flow dividing members 316 are arranged in one-to-one correspondence with the plurality of second outlet holes 315. One end of the flow dividing member 316 is arranged on the inner top wall of the buffer housing 31, and the other end of the flow dividing member 316 extends towards the bottom wall of the buffer housing 31. The flow dividing member 316 is connected between the inner peripheral wall of the buffer housing 31 and the blocking member 32, and the flow dividing member 316 is used for dividing and buffering the flue gas.

[0046] Specifically, in the height direction of the buffer housing 31, the upper end portion of the flow dividing member 316 is connected and matched with the inner top wall of the buffer housing 31. In the radial direction of the buffer housing 31, the outer side wall of the flow dividing member 316 is connected and matched with the inner peripheral wall of the buffer housing 31. The inner side wall of the flow dividing member 316 is connected and matched with the outer peripheral wall of the blocking member 32. The lower end portion of the flow dividing member 316 extends towards the bottom wall of the buffer housing 31, and the lower end portion of the flow dividing member 316 is spaced apart from the inner bottom wall of the buffer housing 31. The height direction of the buffer housing 31 can be up to Figure 3 the up and down direction in

[0047] In some specific embodiments, when the shapes of both the buffer housing 31 and the flow dividing member 316 are configured as circular, the lower end portion of the flow dividing member 316 spirally extends towards the bottom wall of the buffer housing 31.

[0048] By setting a plurality of second air outlet holes 315, the smoke flows out of the buffer shell 31 from the plurality of second air outlet holes 315, and a plurality of diverter pieces 316 divert the smoke at the same time, thereby avoiding the smoke from concentrating on one second air outlet hole 315 as much as possible, avoiding the smoke from being unable to be discharged from the buffer shell 31 in time, causing the heating component 2 to have difficulty in inhaling cold air, avoiding the temperature of the heating component 2 from being higher than the preset safety temperature value, and thereby improving the working reliability of the gas water heater 100.

[0049] Reference Figure 2 , Figure 4 , Figure 6 and Figure 7 In some embodiments of the present application, the gas water heater 100 may further include: an exhaust component 5, the top wall of the buffer shell 31 is provided with an exhaust hole 317 and a receiving hole 318, the receiving hole 318 is opposite to and connected with the air inlet channel 312, the exhaust hole 317 is provided with a shielding member 319 at the end wall cover of the air inlet channel 312, the shielding member 319 is opposite to the air inlet channel 312 and defines the exhaust channel 3191, the outer peripheral wall of the shielding member 319 is provided with at least one connecting hole 3192, the exhaust hole 317, the connecting hole 3192, the exhaust channel 3191 and the air inlet channel 312 are connected to each other.

[0050] Specifically, along the height direction of the buffer shell 31, the exhaust hole 317, the accommodating hole 318 and the shielding member 319 are all located above the second air inlet hole 314, and the shielding member 319 is covered below the exhaust hole 317. An exhaust channel 3191 is defined between the shielding member 319 and the lower end wall of the exhaust hole 317. The connecting hole 3192 is connected to the exhaust channel 3191 and the air inlet channel 312, and the exhaust hole 317 is connected to the exhaust channel 3191. The smoke is suitable for passing through the connecting hole 3192, the exhaust channel 3191 and the exhaust hole 317 in sequence to flow out of the buffer shell 31.

[0051] The exhaust assembly 5 includes a cover body 51 and a driving member 52. The cover body 51 is pivotally disposed on the exhaust hole 317. The cover body 51 is used to open or close the exhaust hole 317. The driving member 52 is movably disposed in the accommodating hole 318 and is transmission-connected to the cover body 51. The driving member 52 is suitable for being driven by smoke to drive the cover body 51 to rotate around the pivot axis 511 of the cover body 51 so that the cover body 51 opens the exhaust hole 317.

[0052] Specifically, when the air pressure value in the buffer housing 31 is greater than or equal to the preset air pressure value, the flue gas in the intake passage 312 drives the driving member 52 to move away from the intake passage 312 through the accommodation hole 318. The driving member 52 drives the cover body 51 to rotate around the pivot axis 511 between the cover body 51 and the exhaust hole 317 to open the exhaust hole 317. The flue gas in the intake passage 312 directly flows out of the buffer housing 31 through the exhaust hole 317, thereby avoiding the too slow speed of the flue gas flowing out of the buffer housing 31 through the second air outlet 315, avoiding the accumulation of flue gas in the buffer housing 31 and the combustion chamber 27 of the heating assembly 2, avoiding the difficulty for the blower 24 to blow cold gas in the external environment into the combustion chamber 27, and avoiding the temperature of the combustion chamber 27 exceeding the preset safety temperature value, thereby improving the working reliability of the gas water heater 100.

[0053] Moreover, the driving member 52 can control the degree of opening of the exhaust hole 317 by the cover body 51 according to the air pressure value in the buffer housing 31. Specifically, when the air pressure value in the buffer housing 31 is much higher than the preset air pressure value, the driving part 521 drives the cover body 51 to fully open the exhaust hole 317. When the air pressure value in the buffer housing 31 is slightly higher than the preset air pressure value, the driving part 521 drives the cover body 51 to slightly open the exhaust hole 317, thereby preventing the cover body 51 from fully opening the exhaust hole 317 when the air pressure value in the buffer housing 31 is slightly higher than the preset air pressure value, and all the flue gas in the buffer housing 31 flowing out of the housing through the exhaust hole 317, resulting in a large noise generated by the gas water heater 100.

[0054] It should be noted that when the cover body 51 fully opens the exhaust hole 317, the cover body 51 rotates 90° relative to its position when the cover body 51 closes the exhaust hole 317. When the cover body 51 closes the exhaust hole 317, the cover body 51 is parallel to the upper end wall of the buffer housing 31.

[0055] When the air pressure value in the buffer housing 31 is less than the preset air pressure value, under the action of gravity, the driving member 52 moves close to the intake passage 312, and the driving member 52 drives the cover body 51 to rotate around the pivot axis 511 between the cover body 51 and the exhaust hole 317 to close the exhaust hole 317.

[0056] It should be noted that when the flue gas enters the intake passage 312, the shielding member 319 shields the exhaust hole 317, and the flue gas cannot directly impact the exhaust hole 317, thereby avoiding the flue gas directly flowing out of the buffer housing 31 through the exhaust hole 317.

[0057] Refer to Figure 4 、 Figure 6 and Figure 7, in some embodiments of the present application, the driving member 52 includes a driving portion 521 and a counterweight portion 522. The driving portion 521 is connected and cooperated with the counterweight portion 522, and the counterweight portion 522 is located at the end of the receiving hole 318 close to the intake passage 312. That is to say, along the height direction of the buffer housing 31, the counterweight portion 522 is located below the driving portion 521, and the counterweight portion 522 is close to the open end of the receiving hole 318. The driving portion 521 is in transmission connection with the cover body 51.

[0058] Moreover, when the counterweight portion 522 is driven by the flue gas, the counterweight portion 522 drives the driving portion 521 to drive the cover body 51 to rotate to open the exhaust hole 317. When the counterweight portion 522 is not driven by the flue gas, the counterweight portion 522 drives the driving portion 521 to drive the cover body 51 to rotate to close the exhaust hole 317.

[0059] Specifically, when the air pressure value in the buffer housing 31 is greater than or equal to the preset air pressure value, the flue gas drives the counterweight portion 522 to drive the driving portion 521 to move away from the intake passage 312, and the driving portion 521 drives the cover body 51 to rotate to open the exhaust hole 317. When the air pressure value in the buffer housing 31 is less than the preset air pressure value, under the action of gravity, the counterweight portion 522 drives the driving portion 521 to move close to the intake passage 312, and the driving portion 521 drives the cover body 51 to rotate to close the exhaust hole 317, so that the technical effect that the driving member 52 drives the cover body 51 to open or close the exhaust hole 317 according to the air pressure value in the buffer housing 31 can be achieved.

[0060] Refer to Figure 4 、 Figure 6 and Figure 7 , in some embodiments of the present application, the cover body 51 has a pivot shaft 511. The pivot shaft 511 is pivotally connected to the inner peripheral wall of the exhaust hole 317. One end of the pivot shaft 511 extends into the receiving hole 318 and a driven gear 512 is provided around the end. A driving gear 523 is provided on the end wall of the driving portion 521 opposite to the pivot shaft 511. The driving gear 523 extends along the height direction of the buffer housing 31. The driving gear 523 is meshed and connected with the driven gear 512.

[0061] When the counterweight portion 522 drives the driving portion 521 to move close to or away from the intake passage 312, the driving portion 521 drives the pivot shaft 511 to rotate through the driving gear 523 and the driven gear 512, and the pivot shaft 511 drives the cover body 51 to rotate around the central axis of the pivot shaft 511, so that the technical effect that the driving portion 521 drives the cover body 51 to rotate to open or close the exhaust hole 317 can be achieved.

[0062] Refer to Figure 6 and Figure 7, in some embodiments of the present application, a limiting groove 3181 is provided on the inner peripheral wall of the accommodation hole 318. The counterweight portion 522 is movably arranged in the limiting groove 3181 and is adapted to be in limiting cooperation with the limiting groove 3181. Specifically, along the height direction of the buffer housing 31, when the counterweight portion 522 is driven by the flue gas to move away from the intake passage 312, the counterweight portion 522 abuts against and is in limiting cooperation with the top wall of the limiting groove 3181. When the counterweight portion 522 moves close to the intake passage 312 under the action of gravity, the counterweight portion 522 abuts against and is in limiting cooperation with the bottom wall of the limiting groove 3181. By the limiting cooperation between the counterweight portion 522 and the limiting groove 3181, it is possible to prevent the driving member 52 from moving close to the intake passage 312 and disengaging from the accommodation hole 318 under the action of gravity, thereby improving the working reliability of the gas water heater 100.

[0063] Refer to Figure 3 and Figure 5 , in some embodiments of the present application, the infusion tube 4 includes a liquid inlet tube 41, a preheating tube 42, and a liquid outlet tube 43. One end of the liquid inlet tube 41 is communicated with one end of the preheating tube 42. The other end of the preheating tube 42 passes through the air flow buffer member 3 and is communicated with one end of the liquid outlet tube 43. The other end of the liquid outlet tube 43 passes through the heating assembly 2. The liquid flows in from the end of the liquid inlet tube 41 far from the preheating tube 42 and flows out from the end of the liquid outlet tube 43 far from the preheating tube 42.

[0064] Specifically, the end of the liquid inlet tube 41 far from the preheating tube 42 is communicated with a water supply device, and the end of the liquid outlet tube 43 far from the preheating tube 42 is communicated with a water using device. The water supply device is used to convey liquid to the infusion tube 4. The liquid sequentially flows through the liquid inlet tube 41, the preheating tube 42, and the liquid outlet tube 43, and then the liquid flows from the liquid outlet tube 43 into the water using device.

[0065] It should be noted that the liquid in the infusion tube 4 is heated by the flue gas in the buffer housing 31 and by the heating assembly 2.

[0066] In some specific embodiments, the water supply device may be a faucet, etc., the water using device may be a shower head, etc., and the liquid may be water.

[0067] The preheating tube 42 forms a heat exchange portion 421 in the buffer housing 31. The heat exchange portion 421 is spirally wound around the outer peripheral wall of the blocking member 32. The flue gas is used to heat the liquid in the heat exchange portion 421.

[0068] In some specific embodiments, along the radial direction of the buffer housing 31, the heat exchange portion 421 is wound around the outer peripheral wall of the outermost blocking member 32 among the plurality of blocking members 32. In some other specific embodiments, along the radial direction of the buffer housing 31, the heat exchange portion 421 is wound around the outer peripheral wall of the innermost blocking member 32 among the plurality of blocking members 32. In some other specific embodiments, the heat exchange portion 421 is wound around the outer peripheral wall of the blocking members 32 between the outermost blocking member 32 and the innermost blocking member 32 among the plurality of blocking members 32.

[0069] The heat exchange portion 421 is formed in the buffer housing 31 by the preheating pipe 42, and the heat exchange portion 421 is spirally wound around the outer peripheral wall of the blocking member 32, so that the time for the liquid in the preheating pipe 42 to pass through the buffer housing 31 can be prolonged, and the flue gas can fully exchange heat with the liquid in the heat exchange portion 421, so that the waste heat of the flue gas can be recovered and utilized as much as possible, and further, the energy utilization rate of the gas water heater 100 can be improved.

[0070] Refer to Figure 3 , in some embodiments of the present application, the gas water heater 100 may further include: a direction control valve 6, a water pressure detection member 7, and a controller. The direction control valve 6 is provided with a first liquid inlet end 61, a first liquid outlet end 62, a second liquid inlet end 63, and a second liquid outlet end 64. The liquid inlet pipe 41 is communicated with the first liquid inlet end 61, one end of the preheating pipe 42 is communicated with the first liquid outlet end 62, the other end of the preheating pipe 42 passes through the buffer housing 31 and is communicated with the second liquid inlet end 63, and the end of the liquid outlet pipe 43 far from the heating assembly 2 is communicated with the second liquid outlet end 64.

[0071] The direction control valve 6 is used to connect or block the first liquid inlet end 61 and the first liquid outlet end 62, and to connect or block the first liquid inlet end 61 and the second liquid outlet end 64, and to connect or block the second liquid inlet end 63 and the second liquid outlet end 64. The water pressure detection member 7 is arranged at the end of the liquid outlet pipe 43 far from the direction control valve 6. The water pressure detection member 7 is used to detect the water pressure of the liquid outlet pipe 43. The direction control valve 6 and the water pressure detection member 7 are both communicatively connected to the controller. The controller is used to control the working state of the direction control valve 6 according to the detection signal of the water pressure detection member 7.

[0072] Specifically, when the water pressure value in the liquid outlet pipe 43 is greater than or equal to the preset water pressure value, the water pressure detection member 7 generates a first detection signal, and the controller controls the direction control valve 6 to connect the first liquid inlet end 61 and the first liquid outlet end 62, and connect the first liquid inlet end 61 and the second liquid outlet end 64, and connect the second liquid inlet end 63 and the second liquid outlet end 64 according to the first detection signal of the water pressure detection member 7. The liquid in the liquid inlet pipe 41 flows into the preheating pipe 42 and the liquid outlet pipe 43 at the same time. The liquid in the preheating pipe 42 is heated by the flue gas and then flows into the liquid outlet pipe 43. The liquid in the liquid outlet pipe 43 is heated by the heating assembly 2. Such a setting can not only achieve the technical effect of recycling the waste heat of the flue gas, but also achieve the technical effect of quickly discharging hot water at the same time.

[0073] Further, when the gas water heater 100 starts to work, the controller controls the direction control valve 6 to connect the first liquid inlet end 61 and the first liquid outlet end 62, and connect the first liquid inlet end 61 and the second liquid outlet end 64, and connect the second liquid inlet end 63 and the second liquid outlet end 64.

[0074] When the water pressure value in the liquid outlet pipe 43 is less than the preset water pressure value, the water pressure detection member 7 generates a second detection signal, and the controller controls the direction control valve 6 to block the first liquid inlet end 61 and the first liquid outlet end 62, and connect the first liquid inlet end 61 and the second liquid outlet end 64, and block the second liquid inlet end 63 and the second liquid outlet end 64. The liquid in the liquid inlet pipe 41 directly flows into the liquid outlet pipe 43, so as to prevent the preheating pipe 42 from diverting the liquid in the liquid inlet pipe 41 and causing the water pressure in the liquid outlet pipe 43 to drop, and avoid the reduction of the water outlet speed of the liquid outlet pipe 43, and further improve the use experience of the gas water heater 100.

[0075] In some specific embodiments, the water pressure detection member 7 can be a pressure sensor or the like.

[0076] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A gas water heater, characterized in that: include: An installation housing (1), the installation housing (1) defining an installation space (11), the installation space (11) being in communication with an external environment; A heating component (2), the heating component (2) being arranged in the mounting shell (1), the heating component (2) defining a heating space (21), a first air inlet (22) being arranged at the bottom of the heating component (2), a first air outlet (23) being arranged at the top of the heating component (2), the first air inlet (22) and the first air outlet (23) both being in communication with the heating space (21); An airflow buffer (3), the airflow buffer (3) comprising a buffer shell (31) and a blocking member (32), the bottom of the buffer shell (31) being connected and matched with the first air outlet (23), the top of the buffer shell (31) extending out of the mounting shell (1), the buffer shell (31) defining a buffer space (311), the blocking member (32) being arranged in the buffer shell (31), the blocking member (32) dividing the buffer space (311) into an air inlet channel (312) and an air outlet channel (311). 3), and the air inlet channel (312) is connected to the air outlet channel (313), the bottom wall of the buffer shell (31) is provided with a second air inlet hole (314), the second air inlet hole (314) is connected to both the air inlet channel (312) and the heating space (21), the top wall of the buffer shell (31) is provided with a second air outlet hole (315) connected to the air outlet channel (313), the smoke passes through the air inlet channel (312) and the air outlet channel (313) in sequence, and the blocking member (32) is used to block the smoke; The infusion tube (4) passes through the airflow buffer (3) and the heating component (2) in sequence, and the smoke in the heating component (2) and the airflow buffer (3) is used to heat the liquid in the infusion tube (4).

2. A gas water heater according to claim 1, characterized in that: There are a plurality of blocking members (32), and the plurality of blocking members (32) are sequentially spaced apart in the radial direction of the buffer shell (31). One of any two adjacent blocking members (32) is arranged on the inner top wall of the buffer shell (31), and the other is arranged on the inner bottom wall of the buffer shell (31). Along the radial direction of the buffer shell (31), the innermost blocking member (32) among the plurality of blocking members (32) is arranged on the inner bottom wall of the buffer shell (31) and is arranged around the inner bottom wall of the buffer shell (31). On the outer side of the second air inlet hole (314), the outermost blocking member (32) among the plurality of blocking members (32) is arranged on the inner top wall of the buffer shell (31), and a buffer channel (321) is defined between any two adjacent blocking members (32), and the buffer channel (321) is located between the air inlet channel (312) and the air outlet channel (313), and the buffer channel (321) is connected to both the air inlet channel (312) and the air outlet channel (313).

3. A gas water heater according to claim 2, characterized in that: There are a plurality of second air outlet holes (315), and a plurality of diverter pieces (316) are arranged in the air outlet channel (313). The plurality of second air outlet holes (315) and the plurality of diverter pieces (316) are arranged at intervals along the circumferential direction of the buffer shell (31), and the plurality of diverter pieces (316) are arranged in a one-to-one correspondence with the plurality of second air outlet holes (315). One end of the diverter piece (316) is arranged on the inner top wall of the buffer shell (31), and the other end extends toward the bottom wall of the buffer shell (31). The diverter piece (316) is connected between the inner circumferential wall of the buffer shell (31) and the blocking piece (32), and the diverter piece (316) is used to divert and buffer the smoke.

4. A gas water heater according to claim 2, characterized in that: Also includes: An exhaust assembly (5), wherein the top wall of the buffer shell (31) is provided with an exhaust hole (317) and a receiving hole (318), the receiving hole (318) is opposite to and communicates with the air inlet channel (312), the exhaust hole (317) is provided with a shielding member (319) near the end wall of the air inlet channel (312), the shielding member (319) is opposite to the air inlet channel (312) and defines an exhaust channel (3191), the outer peripheral wall of the shielding member (319) is provided with at least one communicating hole (3192), the exhaust hole (317) and the communicating hole (3191) are connected to each other. 2) The exhaust passage (3191) and the air inlet passage (312) are arranged to be interconnected in pairs, and the exhaust assembly (5) comprises a cover body (51) and a driving member (52), wherein the cover body (51) is pivotally arranged on the exhaust hole (317), and the driving member (52) is movably arranged on the accommodating hole (318) and is transmission-connected to the cover body (51), and the driving member (52) is suitable for being driven by smoke to drive the cover body (51) to rotate around the pivot axis (511) of the cover body (51), so that the cover body (51) opens the exhaust hole (317).

5. A gas water heater according to claim 4, characterized in that: The driving member (52) comprises a driving portion (521) and a counterweight portion (522); the driving portion (521) is connected and cooperated with the counterweight portion (522), and the counterweight portion (522) is located at the end of the accommodating hole (318) close to the air inlet channel (312); the driving portion (521) is transmission-connected with the cover body (51); when the counterweight portion (522) is driven by smoke, the counterweight portion (522) drives the driving portion (521) to drive the cover body (51) to rotate so as to open the exhaust hole (317); when the counterweight portion (522) is not driven by smoke, the counterweight portion (522) drives the driving portion (521) to drive the cover body (51) to rotate so as to close the exhaust hole (317).

6. A gas water heater according to claim 5, characterized in that: The cover body (51) has a pivot shaft (511), and the pivot shaft (511) is pivotally connected to the inner peripheral wall of the exhaust hole (317). One end of the pivot shaft (511) extends into the accommodating hole (318) and a driven tooth (512) is arranged around the end. The driving part (521) is provided with a driving tooth (523), and the driving tooth (523) is meshingly connected with the driven tooth (512).

7. A gas water heater according to claim 5, characterized in that: The inner peripheral wall of the accommodating hole (318) is provided with a limiting groove (3181), and the counterweight portion (522) is movably arranged in the limiting groove (3181) and is suitable for limiting cooperation with the limiting groove (3181).

8. A gas water heater according to claim 1, characterized in that: The liquid infusion pipe (4) comprises a liquid inlet pipe (41), a preheating pipe (42) and a liquid outlet pipe (43); one end of the liquid inlet pipe (41) is connected to one end of the preheating pipe (42); the other end of the preheating pipe (42) passes through the airflow buffer (3) and is connected to one end of the liquid outlet pipe (43); the other end of the liquid outlet pipe (43) passes through the heating component (2); liquid flows in from one end of the liquid inlet pipe (41) away from the preheating pipe (42) and flows out from one end of the liquid outlet pipe (43) away from the preheating pipe (42); a heat exchange portion (421) is formed in the buffer shell (31); the heat exchange portion (421) is spirally wound around the outer peripheral wall of the blocking member (32); and flue gas is used to heat the liquid in the heat exchange portion (421).

9. A gas water heater according to claim 8, characterized in that: Also includes: A directional control valve (6), a water pressure detection element (7) and a controller, wherein the directional control valve (6) is provided with a first liquid inlet end (61), a first liquid outlet end (62), a second liquid inlet end (63) and a second liquid outlet end (64), the liquid inlet pipe (41) is in communication with the first liquid inlet end (61), one end of the preheating pipe (42) is in communication with the first liquid outlet end (62), the other end of the preheating pipe (42) is in communication with the second liquid inlet end (63), the end of the liquid outlet pipe (43) away from the heating component (2) is in communication with the second liquid outlet end (64), and the directional control valve (6) is used to connect or block the first liquid inlet end (61) ) and the first liquid outlet (62), and is used to connect or block the first liquid inlet (61) and the second liquid outlet (64), and is used to connect or block the second liquid inlet (63) and the second liquid outlet (64), the water pressure detection component (7) is arranged at one end of the liquid outlet pipe (43) away from the directional control valve (6), the water pressure detection component (7) is used to detect the water pressure of the liquid outlet pipe (43), the directional control valve (6) and the water pressure detection component (7) are both connected to the controller for communication, and the controller is used to control the working state of the directional control valve (6) according to the detection signal of the water pressure detection component (7).

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