Gas water heater

Abstract

The utility model discloses a gas water heater which comprises a combustion chamber and a fan assembly, the fan assembly is connected with the combustion chamber and used for discharging smoke of the combustion chamber, and at least one part of the fan assembly is located on the outer side of the combustion chamber in horizontal projection. According to the gas water heater provided by the embodiment of the utility model, the size of the gas water heater is reduced, and the energy efficiency and the space utilization rate of the gas water heater are optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, and particularly relates to a gas water heater. Background Art

[0002] At present, water heaters are commonly used household appliances in people's daily lives. Water heaters are divided into types such as gas water heaters and electric water heaters. Among them, gas water heaters are widely used because of their convenient use. Conventional gas water heaters usually include components such as a burner, a combustion chamber, a heat exchanger, and a smoke collecting hood. The burner burns gas in the combustion chamber to heat the water flowing through the heat exchanger, and the flue gas is discharged to the outside through the blower in the smoke collecting hood. Summary of the Utility Model

[0003] An object of the utility model is to provide a gas water heater.

[0004] The gas water heater according to an embodiment of the utility model includes a combustion chamber and a blower assembly. The blower assembly is connected to the combustion chamber and is used for exhausting smoke from the combustion chamber. In a horizontal projection, at least a part of the blower assembly is located outside the combustion chamber.

[0005] The gas water heater according to an embodiment of the utility model is beneficial to reducing the size of the gas water heater and optimizing the energy efficiency and space utilization rate of the gas water heater.

[0006] In addition, the gas water heater according to the above embodiment of the utility model may further have the following additional technical features:

[0007] In some embodiments, the blower assembly is connected to the upper end of the combustion chamber, and a receiving space located below the blower assembly is provided on the side of the combustion chamber.

[0008] In some embodiments, the gas water heater further includes an electric control assembly, and the electric control assembly is disposed in the receiving space; and / or, the gas water heater further includes a water inlet pipe and a water outlet pipe, and at least one of the water inlet pipe and the water outlet pipe is disposed in the receiving space; and / or, the gas water heater further includes a water inlet valve, and the water inlet valve is disposed in the receiving space; and / or, the gas water heater further includes a drain valve, and the drain valve is disposed in the receiving space.

[0009] In some embodiments, the blower assembly is connected to the lower end of the combustion chamber, and a receiving space located above the blower assembly is provided on the side of the combustion chamber.

[0010] In some embodiments, the fan assembly includes a fan housing, an impeller device, and a motor device. A volute air duct connecting the combustion chamber is configured inside the fan housing. The impeller device is disposed inside the fan housing, and the motor device is drivingly connected to the impeller device. At least a part of the fan housing is located outside the combustion chamber in a horizontal projection.

[0011] In some embodiments, the fan housing includes a smoke collecting hood and a volute. One end of the smoke collecting hood covers the combustion chamber, and the other end of the smoke collecting hood communicates with the volute. The impeller device is disposed inside the volute. In a horizontal projection, the volute is disposed at an end of the combustion chamber.

[0012] In some embodiments, at least a part of the volute is disposed outside the combustion chamber in a horizontal projection, and the lower end is lower than the upper edge of the combustion chamber; and / or, the axis of the volute is set to be inclined upward in the direction from the smoke collecting hood to the volute; and / or, the top wall of the smoke collecting hood is inclined upward in the direction from the smoke collecting hood to the volute and is connected to the volute; and / or, the extending direction of the top wall of the smoke collecting hood is the same as the extending direction of the axis of the volute; and / or, the inlet and outlet of the volute are disposed above the combustion chamber; and / or, the smoke collecting hood is connected to an end plate of the volute and surrounds the inlet of the volute.

[0013] In some embodiments, the fan housing further includes a smoke exhaust pipe, and the smoke exhaust pipe communicates with the outlet of the volute.

[0014] Wherein, the smoke exhaust pipe is set to extend in the up-down direction; and / or, the smoke exhaust pipe has a transition section and an air outlet section. The air outlet section extends in the up-down direction. One end of the transition section is connected to the volute, and the other end is connected to the air outlet section.

[0015] In some embodiments, the fan housing includes a first housing and a second housing. The first housing and the second housing are connected to form the volute air duct.

[0016] In some embodiments, the fan assembly includes: a fan housing provided with a volute air duct; an impeller device rotatably disposed inside the volute air duct; a motor housing connected to the fan housing, at least a part of the motor housing being integrally formed with the fan housing, the motor housing having an installation cavity; a motor device disposed in the installation cavity, the motor device including a motor stator and a motor rotor. The motor rotor is rotationally engaged with the motor stator. The motor stator is connected to the motor housing and is relatively stationary. The motor rotor is drivingly connected to the impeller device.

[0017] In some embodiments, the first housing and the second housing are connected along the axis of the volute; alternatively, the first housing and the second housing are connected along a predetermined direction that is perpendicular to the outlet axis of the volute and the axis of the volute; alternatively, the first housing and the second housing are connected along the outlet axis of the volute.

[0018] In some embodiments, at least one of the first housing and the second housing is configured as a high-temperature resistant housing, a plastic housing, a resin housing, and / or an EMC housing; and / or, the first housing is integrally formed; and / or, the second housing is integrally formed. Description of the Drawings

[0019] Figure 1 is a schematic diagram of a gas water heater according to an embodiment of the present utility model.

[0020] Figure 2 is a schematic diagram of a fan assembly of a gas water heater according to an embodiment of the present utility model.

[0021] Figure 3 is a cross-sectional view of a fan assembly of a gas water heater according to an embodiment of the present utility model.

[0022] Figure 4 is a schematic diagram of a fan housing of a fan assembly of a gas water heater according to an embodiment of the present utility model.

[0023] Figure 5 is a schematic diagram of a fan housing of a fan assembly of a gas water heater according to another embodiment of the present utility model.

[0024] Figure 6 is a schematic diagram of a fan housing of a fan assembly of a gas water heater according to still another embodiment of the present utility model.

[0025] Figure 7 is a cross-sectional view of a fan assembly of a gas water heater according to an embodiment of the present utility model.

[0026] Reference Numerals: Gas water heater 100, Fan assembly 10, Fan housing 11, Volute 101, Smoke collecting hood 102, Exhaust pipe 103, First housing 111, Second housing 112, Impeller device 12, Motor device 13, Motor stator 131, Motor rotor 132, Motor housing 14, Housing 20, Accommodating space 201, Combustion chamber 30, Electric control component 40, Water inlet pipe 51, Water outlet pipe 52, Water inlet valve 53, Drain valve 54. Detailed Description of the Embodiments

[0027] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0028] As Figure 1 , the gas water heater 100 according to an embodiment of the present utility model includes a combustion chamber 30. The combustion chamber 30 may be provided with a burner, and the burner may be configured to heat using gas. Specifically, gas may be introduced into the burner, and the burner heats a heat exchanger disposed in the combustion chamber 30, thereby heating the fluid passing through the heat exchanger to achieve heating of the fluid.

[0029] In addition, the gas water heater 100 may further include a blower assembly 10. The blower assembly 10 is connected to the combustion chamber 30 and is used for exhausting the smoke of the combustion chamber 30. During use, the smoke generated by the combustion chamber 30 can be discharged by the air flow driving action of the blower assembly 10 to improve the safety and combustion efficiency of the gas water heater 100. In addition, at least a part of the blower assembly 10 is located outside the combustion chamber 30 in the horizontal projection (that is, the projection on the water surface along the up and down direction).

[0030] For the gas water heater 100 according to an embodiment of the present utility model, by disposing a part of the blower assembly 10 outside the combustion chamber 30, the overlapping part of the blower assembly 10 and the combustion chamber 30 in the horizontal projection can be reduced, thereby reducing the size of the blower assembly 10 along the up and down direction, reducing the height of the gas water heater, and further reducing the volume of the gas water heater 100 and improving the integration degree of the gas water heater 100. In addition, it can also make the layout of the components in the gas water heater 100 more compact.

[0031] As Figure 1 , in some embodiments, the blower assembly 10 is connected to the upper end of the combustion chamber 30, and a receiving space 201 is provided below the blower assembly 10 on the side of the combustion chamber 30. The blower assembly 10 can extend out of the side of the combustion chamber 30 to construct a receiving space 201 on the side of the combustion chamber 30, which is convenient for arranging the components in the gas water heater 100, optimizing the layout of the components in the gas water heater 100, and improving the integration degree of the gas water heater 100.

[0032] Specifically, the gas water heater 100 may further include functional components, and these functional components may be arranged in the receiving space 201.

[0033] For example, as Figure 1, in some examples, the gas water heater 100 may further include an electric control component 40, and the electric control component 40 is disposed in the accommodation space 201. The gas water heater 100 may further include a housing 20, and the combustion chamber 30 and the fan assembly 10 may be disposed inside the housing 20. An installation seat may be provided inside the housing 20, and the installation seat is positioned in the housing 20 and located in the accommodation space 201. The electric control component 40 may be installed on the installation seat to achieve stable installation of the electric control component 40.

[0034] As Figure 2 , in some examples, the gas water heater 100 further includes a water inlet pipe 51 and a water outlet pipe 52, and at least one of the water inlet pipe 51 and the water outlet pipe 52 is disposed in the accommodation space 201. Specifically, a heat exchanger may be provided inside the combustion chamber 30, and the water inlet pipe 51 and the water outlet pipe 52 may be connected to the heat exchanger. The water inlet pipe 51 is used to introduce water into the heat exchanger, and the water outlet pipe 52 is used to discharge the water inside the heat exchanger. The water inlet pipe 51 and the water outlet pipe 52 may be disposed outside the combustion chamber 30, and the water inlet pipe 51 and the water outlet pipe 52 may be disposed on the same side of the combustion chamber 30 in the left-right direction. At this time, both the water inlet pipe 51 and the water outlet pipe 52 may be disposed in the accommodation space 201; or, the water inlet pipe 51 may be disposed on one side of the combustion chamber 30, and the water outlet pipe 52 may be disposed on the other side of the combustion chamber 30. One of the water inlet pipe 51 and the water outlet pipe 52 may be disposed in the accommodation space 201.

[0035] In addition, as Figure 3 , the gas water heater 100 in the present utility model may further include a water inlet valve 53 and / or a drain valve 54, etc. The water inlet valve 53 and / or the drain valve 54 may also be disposed in the accommodation space 201. Thus, the components in the gas water heater 100 may be accommodated in the accommodation space 201, so as to facilitate the assembly and maintenance of the gas water heater 100, improve the structural stability of the gas water heater 100, and facilitate assembly and maintenance.

[0036] In other embodiments of the present utility model, the fan assembly 10 is connected to the lower end of the combustion chamber 30, and an accommodation space 201 is provided above the fan assembly 10 on the side of the combustion chamber 30.

[0037] As Figure 2 and Figure 3, the blower assembly 10 of the embodiment of the present utility model may include a blower housing 11, an impeller device 12, and a motor device 13. A volute air duct connecting the inlet to the combustion chamber 30 is configured inside the blower housing 11. The impeller device 12 is disposed inside the blower housing 11, and the motor device 13 is drivingly connected to the impeller device 12. The motor device 13 can drive the impeller device 12 to rotate, and the rotation of the impeller device 12 can drive the air flow in the volute air duct. Among them, the air flow can flow from the inlet of the volute air duct to the outlet, so that the blower assembly 10 can be used to realize the smoke exhaust in the gas water heater 100. Among them, at least a part of the blower housing 11 is located outside the combustion chamber 30 in the horizontal projection, which can facilitate reducing the size of the blower housing 11 in the up-and-down direction, thereby reducing the size of the gas water heater 100 and improving the integration degree of the gas water heater 100.

[0038] In some embodiments, such as Figure 2 and Figure 3 , the blower assembly 10 includes a smoke collecting hood 102 and a volute 101. One end of the smoke collecting hood 102 covers the combustion chamber 30. Preferably, one end of the smoke collecting hood 102 is disposed above the combustion chamber 30 for collecting the smoke generated during the heating process of the combustion chamber 30. The other end of the smoke collecting hood 102 communicates with the volute 101. The impeller device 12 is disposed inside the volute 101. During the rotation of the impeller device 12, a negative pressure will be generated at the inlet of the volute 101, and this negative pressure will be transmitted to the smoke collecting hood 102, thereby facilitating the smoke collecting hood 102 to collect smoke. In the water projection, the volute 101 is disposed at the end of the combustion chamber 30. The impeller device 12 will suck the smoke from the end of the combustion chamber 30. Among them, the smoke can be set to flow into the smoke collecting hood 102 from bottom to top, and then converge towards the volute 101 located at the end of the combustion chamber 30 through the smoke collecting hood 102, and finally be sent out through the outlet of the volute 101. By disposing the volute 101 at the end of the combustion chamber 30, compared with the scheme of disposing the volute 101 above the combustion chamber 30, it can further reduce the size of the burner water heater in the up-and-down direction, thereby making full use of the space on the side of the combustion chamber 30 and improving the space utilization rate.

[0039] Optionally, at least a part of the volute 101 is disposed outside the combustion chamber 30 in the horizontal projection, and the lower end is lower than the upper edge of the combustion chamber. Thereby, the height of the volute 101 can be further reduced, thereby reducing the height of the blower assembly 10, and further reducing the size of the gas water heater 100 in the up-and-down direction, and improving the space utilization rate of the gas water heater 100. Optionally, a part of the volute 101 overlaps with the combustion chamber 30 in the horizontal projection, and the other part is disposed outside the combustion chamber 30.

[0040] Optionally, such as Figures 1 to 3, the axis of the volute 101 is set to be inclined upward in the direction from the smoke collecting hood 102 to the volute 101, where the volute 101 is set to intake air axially, and the inlet of the volute 101 is provided on the end plate of the volute 101. The inlet of the volute 101 is set to extend in the same direction as the axis, that is, the inlet of the volute 101 faces the combustion chamber and is inclined upward in the direction from the smoke collecting hood 102 to the volute 101, so that the turning angle during the flow of the flue gas can be reduced, and thus the wind resistance in its volute air duct can be reduced, facilitating the flue gas to enter the volute.

[0041] The top wall of the smoke collecting hood 102 is inclined upward in the direction from the smoke collecting hood 102 to the volute 101 and is connected to the volute 101. Optionally, the extending direction of the top wall of the smoke collecting hood 102 is the same as the extending direction of the axis of the volute 101. By setting any of the above-mentioned setting forms, the discharge of the flue gas can be facilitated. Specifically, due to the negative pressure effect generated by the impeller device 12 and the spontaneous upward flow of the high-temperature flue gas in the combustion chamber 30, the flue gas generated during the heating process of the combustion chamber 30 will enter the smoke collecting hood 102. By setting the top wall of the smoke collecting hood 102 to be inclined, the flue gas flowing into the smoke collecting hood 102 will flow towards the volute 101 under the guiding action of the top wall of the smoke collecting hood 102 and enter the volute 101 through the inlet of the volute 101. Under the action of the impeller device 12, it can be sent out through the outlet. By setting the top wall of the smoke collecting hood 102 to be inclined and / or the axis of the volute 101 to be inclined, the guiding of the flue gas can be facilitated, the resistance during the flow of the flue gas is reduced, the occurrence of phenomena such as turbulent flow is avoided, and the smoke exhaust efficiency and smoke exhaust effect of the fan assembly 10 are effectively improved, thereby improving the performance of the gas water heater 100.

[0042] Optionally, the inclination angle of the axis of the volute 101 relative to the up-down direction is greater than 0° and less than 90°. Preferably, the inclination angle of the axis of the volute 101 relative to the up-down direction is greater than or equal to 30° and less than or equal to 60°. For example, the inclination angle of the axis of the volute 101 relative to the up-down direction can be set to 15°, 25°, 30°, 46°, 60°, 65° or 79°, etc.

[0043] Such as Figure 1, in some embodiments, the inlet and outlet of the volute 101 are provided above the combustion chamber 30; and / or, one end of the smoke collecting hood 102 covers the combustion chamber 30, and the other end is connected to the end plate of the volute 101 and surrounds the inlet of the volute 101. Specifically, the volute 101 has a first end plate, a second end plate and a peripheral wall. Among them, the first end plate and the second end plate are arranged along the axis of the volute 101. The first end plate faces the smoke collecting hood 102, and the inlet of the volute 101 is provided on the first end plate; the outlet of the volute 101 is provided on the peripheral wall of the volute 101. By arranging the inlet of the volute 101 above the combustion chamber 30, it is convenient for the smoke collecting hood 102 to connect to the first end plate of the volute 101 and communicate with the inlet provided on the first end plate, thereby reducing the flow path of the flue gas and reducing the wind resistance. In addition, the volute 101 can be arranged to send the axial intake air radially through the rotation of the impeller device 12. By arranging the outlet of the volute 101 above the combustion chamber 30, it is convenient for the flue gas to be discharged along, thereby optimizing the smoke exhaust efficiency and effect of the fan assembly 10. In addition, the smoke collecting hood 102 is connected to the first end plate of the volute 101 and surrounds the inlet of the volute 101, which can facilitate the smoke in the smoke collecting hood 102 to be discharged into the volute 101 and can reduce the volume of the fan assembly 10 and improve the space utilization rate.

[0044] In some embodiments, the axis of the inlet of the smoke collecting hood 102 is arranged to extend in the up-down direction. It is convenient for the smoke collecting hood 102 to connect to the combustion chamber 30, so that the flue gas in the combustion chamber 30 can flow into the smoke collecting hood 102, facilitating smoke exhaust.

[0045] In some embodiments, the fan housing 11 further includes a smoke exhaust pipe 103, and the smoke exhaust pipe 103 communicates with the outlet of the volute 101. Through the smoke exhaust pipe 103, it is convenient to discharge the flue gas in the fan housing 11, improving the smoke exhaust efficiency and effect of the fan assembly 10 and optimizing the performance of the fan assembly 10.

[0046] Optionally, the smoke exhaust pipe 103 is arranged to extend in the up-down direction. In addition, the smoke exhaust pipe 103 may further have a transition section and an air outlet section. The air outlet section extends in the up-down direction. One end of the transition section is connected to the volute 101 and communicates with the outlet of the volute 101, and the other end is connected to the air outlet section. Thereby, the wind resistance can be further reduced and the flue gas discharge efficiency can be improved.

[0047] Among them, such as Figure 7, the fan assembly 10 includes: a fan housing 11 and an impeller device 12. The fan housing 11 is provided with a volute air duct, and a volute inlet 1011 and a volute outlet 1012 are provided. The volute air duct is arranged between the volute inlet 1011 and the volute outlet 1012. The impeller device 12 is arranged in the volute air duct, and the impeller device 12 is rotatable, and can drive the air flow to flow from the volute inlet 1011 to the volute outlet 1012 by rotation, so as to realize the driving of the air flow. The fan assembly 10 further includes a motor housing 14 and a motor device 13. The motor housing 14 is connected to the fan housing 11. The motor housing 14 is provided with an installation cavity. The motor device 13 is arranged in the installation cavity. The motor device 13 includes a motor stator 131 and a motor rotor 132. The motor rotor 132 is rotationally matched with the motor stator 131. The motor stator 131 is connected to the motor housing 14 and is relatively stationary. The motor rotor 132 is drivingly connected to the impeller device 12. According to the fan assembly 10 of the embodiment of the present invention, connecting the motor housing 14 to the fan housing 11 can simplify the structure of the fan assembly 10, facilitate the manufacture and production of the fan assembly 10, etc. In addition, connecting the motor rotor 132 to the impeller device 12 can use the motor stator 131 to drive the motor rotor 132 to rotate, and then use the motor rotor 132 to drive the impeller device 12 to rotate, so as to realize the driving of the air flow.

[0048] As Figures 4 to 6 , in some embodiments, the fan assembly 10 includes a first housing 111 and a second housing 112. The first housing 111 and the second housing 112 are connected and construct a volute air duct. The connection structure of the first housing 111 and the second housing 112 includes but is not limited to the following embodiments.

[0049] Embodiment 1

[0050] As Figure 4 , the first housing 111 and the second housing 112 are connected along the axial direction of the impeller device 12.

[0051] Optionally, the first housing 111 includes a first sub-shell and a third sub-shell, and the second housing 112 includes a second sub-shell and a fourth sub-shell. The first sub-shell and the second sub-shell cooperate to construct a volute 101. The outlet of the volute 101 is arranged between the third sub-shell and the fourth sub-shell. The first sub-shell may include a first side plate and a first end plate. The first side plate may be configured as a cylinder, and the first end plate is connected to one side edge of the first side plate. The second sub-shell may include a second side plate and a second end plate. The second side plate may be configured as a cylinder, and the second end plate is connected to one side edge of the second side plate. The other side edge of the first side plate and the other side edge of the second side plate are connected to construct the volute 101. The third sub-shell is connected to the first side plate, the fourth sub-shell is connected to the second side plate, and the third sub-shell and the fourth sub-shell are connected to construct the outlet of the volute 101.

[0052] In addition, the fan housing 11 is further provided with an air inlet duct, which is arranged in the first housing 111. The first end plate may be provided with an inlet of the volute 101. The first housing 111 may further include a third side plate, which is configured as a smoke collecting hood 102. An air inlet duct is formed inside the smoke collecting hood 102. The third side plate may be connected to the first end plate. The third side plate may be cylindrical, square cylindrical, triangular cylindrical or of other shapes. During the assembly process of the fan assembly 10, the impeller device 12 can be installed in the volute 101. The volute 101 is formed by splicing the first housing 111 and the second housing 112, which facilitates the installation of the impeller device 12 and can utilize the impeller device 12 of the second end plate to provide support. With this arrangement, the installation efficiency of the impeller device 12 can be improved.

[0053] Embodiment 2

[0054] As Figure 5 , the first housing 111 and the second housing 112 are connected along a predetermined direction. The first housing 111 includes a fifth sub-housing and a seventh sub-housing, and the second housing 112 includes a sixth sub-housing and an eighth sub-housing. The fifth sub-housing and the sixth sub-housing cooperate to form the volute 101. The outlet of the volute 101 is arranged between the seventh sub-housing and the eighth sub-housing. The predetermined direction is perpendicular to the axis direction of the outlet of the volute 101 and the axis of the impeller device 12.

[0055] The fifth sub-housing may include a third end plate, a fourth end plate and a fourth side plate. The sixth sub-housing may include a fifth end plate, a sixth end plate and a fifth side plate. The fourth side plate is connected between the third end plate and the fourth end plate. The fifth side plate is connected between the fifth end plate and the sixth end plate. The third end plate and the fifth end plate are connected into a flat plate shape. The fourth end plate and the sixth end plate are connected into a flat plate shape. The fourth side plate and the fifth side plate are connected into a surrounding plate shape. The third end plate, the fourth end plate, the fourth side plate, the fifth end plate, the sixth end plate and the fifth side plate cooperate to form the volute 101. The seventh sub-housing is connected to the fourth side plate, and the eighth sub-housing is connected to the fifth side plate. The seventh sub-housing and the eighth sub-housing are connected to form the outlet of the volute 101.

[0056] In addition, the fan housing 11 is also provided with an air inlet duct. An inlet of the volute 101 is constructed between the third end plate and the fourth end plate. The first housing 111 further includes a sixth side plate, and the second housing 112 further includes a seventh side plate. The sixth side plate can be connected to the third end plate, and the seventh side plate can be connected to the fifth end plate. The sixth side plate and the seventh side plate can be configured to form a smoke collecting hood 102. An air inlet duct is constructed inside the smoke collecting hood 102. The smoke collecting hood 102 can be set in a cylindrical shape, a square tube shape, a triangular tube shape or other shapes. During the assembly process of the fan assembly 10, the impeller device 12 can be installed in the volute 101. The volute 101 is formed by splicing the first housing 111 and the second housing 112, which facilitates the installation of the impeller device 12. Moreover, the cooperation of the fourth end plate and the sixth end plate can be used to support the impeller device 12. Through this setting form, the installation efficiency of the impeller device 12 can be improved.

[0057] Embodiment Three

[0058] As Figure 6 , the first housing 111 and the second housing 112 are connected along the axial direction of the outlet of the volute 101. The first housing 111 includes a ninth sub-housing and a tenth sub-housing. The ninth sub-housing and the second housing 112 cooperate to form the volute 101, and the tenth sub-housing surrounds the outlet of the volute 101.

[0059] The ninth sub-housing may include a seventh end plate, an eighth end plate and an eighth side plate. The second housing 112 may include a ninth end plate, a tenth end plate and a ninth side plate. The eighth side plate is connected between the seventh end plate and the eighth end plate, and the ninth side plate is connected between the ninth end plate and the tenth end plate. The seventh end plate and the ninth end plate are connected into a flat plate shape, the eighth end plate and the tenth end plate are connected into a flat plate shape, and the eighth side plate and the ninth side plate are connected into a surrounding plate shape. The seventh end plate, the eighth end plate, the eighth side plate, the ninth end plate, the tenth end plate and the ninth side plate cooperate to form the volute 101. The second housing 112 is connected to the eighth side plate, and the inside of the tenth sub-housing surrounds the outlet of the volute 101.

[0060] In addition, the fan housing 11 is also provided with an air inlet duct. An inlet of the volute 101 is constructed between the seventh end plate and the ninth end plate. The first housing 111 further includes a tenth side plate, and the second housing 112 further includes an eleventh side plate. The tenth side plate can be connected to the seventh end plate, and the eleventh side plate can be connected to the ninth end plate. The tenth side plate and the eleventh side plate can be configured to form a smoke collecting hood 102. An air inlet duct is constructed inside the smoke collecting hood 102. The smoke collecting hood 102 can be set in a cylindrical shape, a square tube shape, a triangular tube shape or other shapes. During the assembly process of the fan assembly 10, the impeller device 12 can be installed in the volute 101. The volute 101 is formed by splicing the first housing 111 and the second housing 112, which facilitates the installation of the impeller device 12. Moreover, the cooperation of the eighth end plate and the tenth end plate can be utilized to support the impeller device 12. Through this setting form, the installation efficiency of the impeller device 12 can be improved.

[0061] In some embodiments of the present invention, the first housing 111 is configured to be integrally formed. By integrally forming, the processing efficiency of the first housing 111 can be improved, the processing cost of the first housing 111 can be reduced, and it can also ensure that the first housing 111 has higher structural strength and sealing effect, thereby improving the service life and energy efficiency of the fan assembly 10. In addition, the second housing 112 can also be configured to be integrally formed. When both the first housing 111 and the second housing 112 are provided with an integrally formed structure, the service life and energy efficiency of the fan assembly 10 can be further improved, and problems such as stress concentration at the connection between the first housing 111 and the second housing 112 caused by thermal expansion and contraction of the first housing 111 and the second housing 112 can be avoided.

[0062] At least one of the first housing 111 and the second housing 112 in the present invention can be set as a plastic housing, which can further improve the processing efficiency of the fan assembly 10 and reduce the cost of the fan assembly 10. In addition, in combination with the foregoing, the air duct structure is constructed by connecting the first housing 111 and the second housing 112 in the front-rear direction in the present invention, which can simplify the structures of the first housing 111 and the second housing 112, make the first housing 111 and the second housing 112 convenient for plastic molding, thereby effectively reducing the cost of the fan assembly 10 and improving the molding efficiency of the fan assembly 10.

[0063] Among them, the first housing 111 and the second housing 112 in the present invention can be set as heat-resistant materials and can be installed in a special environment of a water heater. For example, the first housing 111 and the second housing 112 can be respectively formed by die-casting through injection molding. After molding, the first housing 111 and the second housing 112 are connected together, that is, the original multiple sheet metals are simplified into a housing composed of two components, which simplifies the process flow and reduces the processing cost.

[0064] In addition, at least one of the first housing 111 and the second housing 112 in the present utility model can be configured to cooperate as a BMC housing. BMC is essentially a molding intermediate material for manufacturing glass fiber reinforced thermosetting products by a semi-dry process. It can be molded and injection-molded, and its heat resistance is better than that of general engineering plastics. Its heat distortion temperature HDT is up to degrees Celsius. Therefore, when the housing made of BMC material is installed in the water heater, it will not overheat and melt.

[0065] In addition, at least one of the first housing 111 and the second housing 112 can also be made of a metal material.

[0066] Wherein, a connecting member is provided between the first housing 111 and the second housing 112. Specifically, the connecting member can be a bolt. In other embodiments, the connecting member can also be a wire for connection, etc. In addition, the first housing 111 and the second housing 112 can also be connected by gluing. The first housing 111 and the second housing 112 can be connected in a glued form. The above connection method is relatively simple and convenient to operate.

[0067] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0068] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0069] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0070] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0071] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0072] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A gas water heater (100), characterized in that, It includes a combustion chamber (30) and a blower assembly (10). The blower assembly (10) is connected to the combustion chamber (30) and is used for exhausting smoke from the combustion chamber (30). In the horizontal projection, at least a part of the blower assembly (10) is located outside the combustion chamber (30).

2. The gas water heater (100) according to claim 1, characterized in that, The blower assembly (10) is connected to the upper end of the combustion chamber (30), and a receiving space (201) is provided on the side of the combustion chamber (30) and below the blower assembly (10).

3. The gas water heater (100) according to claim 2, characterized in that, The gas water heater (100) further includes an electric control assembly (40), and the electric control assembly (40) is disposed in the receiving space (201); and / or, the gas water heater (100) further includes a water inlet pipe (51) and a water outlet pipe (52), and at least one of the water inlet pipe (51) and the water outlet pipe (52) is disposed in the receiving space (201); and / or, the gas water heater (100) further includes a water inlet valve (53), and the water inlet valve (53) is disposed in the receiving space (201); and / or, the gas water heater (100) further includes a drain valve (54), and the drain valve (54) is disposed in the receiving space (201).

4. The gas water heater (100) according to claim 1, characterized in that, The blower assembly (10) is connected to the lower end of the combustion chamber (30), and a receiving space (201) is provided on the side of the combustion chamber (30) and above the blower assembly (10).

5. The gas water heater (100) according to claim 1, characterized in that, The blower assembly (10) includes a blower housing (11), an impeller device (12) and a motor device (13). A volute air duct with an inlet connected to the combustion chamber (30) is configured inside the blower housing (11). The impeller device (12) is disposed inside the blower housing (11), and the motor device (13) is drivingly connected to the impeller device (12). In the horizontal projection, at least a part of the blower housing (11) is located outside the combustion chamber (30).

6. The gas water heater (100) according to claim 5, characterized in that, The blower housing (11) includes a smoke collecting hood (102) and a volute (101). One end of the smoke collecting hood (102) covers the combustion chamber (30), the other end of the smoke collecting hood (102) is communicated with the volute (101), and the impeller device (12) is disposed inside the volute (101). In the horizontal projection, the volute (101) is disposed at the end of the combustion chamber (30).

7. The gas water heater (100) according to claim 6, characterized in that, At least a part of the volute (101) is disposed outside the combustion chamber (30) in a horizontal projection, and the lower end is lower than the upper edge of the combustion chamber (30); and / or, the axis of the volute (101) is set to be inclined upward in the direction from the smoke collecting hood (102) to the volute (101); and / or, the top wall of the smoke collecting hood (102) is inclined upward in the direction from the smoke collecting hood (102) to the volute (101) and is connected to the volute (101); and / or, the extending direction of the top wall of the smoke collecting hood (102) is the same as the extending direction of the axis of the volute (101); and / or, the inlet and outlet of the volute (101) are disposed above the combustion chamber (30); and / or, the smoke collecting hood (102) is connected to the end plate of the volute (101) and surrounds the inlet of the volute (101).

8. The gas water heater (100) according to claim 1, wherein The fan assembly (10) includes: A fan housing (11), the fan housing (11) being provided with a volute air duct; An impeller device (12), the impeller device (12) being rotatably disposed in the volute air duct; A motor housing (14), the motor housing (14) being connected to the fan housing (11), at least a part of the motor housing (14) being integrally formed with the fan housing (11), the motor housing (14) being provided with an installation cavity; A motor device (13), the motor device (13) being disposed in the installation cavity, the motor device (13) including a motor stator (131) and a motor rotor (132), the motor rotor (132) being rotatably matched with the motor stator (131), the motor stator (131) being connected to the motor housing (14) and being relatively stationary, the motor rotor (132) being drivingly connected to the impeller device (12).

9. The gas water heater (100) according to claim 8, characterized in that, The fan housing (11) includes a first housing (111) and a second housing (112), the first housing (111) and the second housing (112) being connected and constructing the volute air duct.

10. The gas water heater (100) according to claim 9, characterized in that, The first housing (111) and the second housing (112) are connected along the axis of the fan housing (11); or, the first housing (111) and the second housing (112) are connected along a predetermined direction, the predetermined direction being perpendicular to the outlet axis of the fan housing (11) and the axis of the fan housing (11); or, the first housing (111) and the second housing (112) are connected along the outlet axis of the fan housing (11).

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