Casing assembly and gas water heating equipment

Abstract

The utility model belongs to the technical field of heat supply, and particularly discloses a machine shell assembly and gas water heating equipment. The machine shell assembly comprises a shell and an air volume adjusting module, the shell is provided with a mounting cavity, and an air inlet communicating with the mounting cavity is formed in one side of the shell; the air volume adjusting module comprises a driving part and an air adjusting plate, the air adjusting plate is installed on the shell in a sliding mode, and the driving part drives the air adjusting plate to slide in the first direction so as to adjust the air inlet area of the air inlet. The gas water heating equipment comprises the shell assembly. According to the machine shell assembly and the gas water heating equipment, the air inlet volume can be adjusted, the shell space occupied by the air volume adjusting module is reduced, the arrangement flexibility and convenience of the air volume adjusting module are improved, and the space layout reasonability of the internal structure of the gas water heating equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heat supply, especially relates to a machine shell assembly and gas water heating equipment. BACKGROUND

[0002] The gas water heater is the equipment that realizes the heating to water through the combustion of gas, in order to guarantee the fullness of combustion, the shell of the gas water heater is usually provided with an air inlet to supplement air into the combustion chamber during the combustion process.

[0003] The air inlet area of the shell of the conventional setting is designed based on the air intake amount of the gas water heater under the rated power, when the gas water heater works under other loads, the air inlet area of the air inlet is too large. Since the working noise of the gas water heater is positively correlated with the air inlet area, and the noise inside the gas water heater can also be transmitted outward through the air inlet, that is, the larger the air inlet area of the air inlet, the larger the noise transmitted outward by the gas water heater.

[0004] To reduce the noise of the gas water heater when operating below the rated power, the prior art provides a water heater with an air inlet adjusting device, the top of the shell of the water heater is provided with an air inlet, and the air inlet adjusting device is installed inside the shell and is arranged opposite the air inlet. The air inlet adjusting device includes an air inlet sleeve, an air outlet sleeve and a driving structure, the air outlet sleeve is sleeved outside the air inlet sleeve, the upper end of the air inlet sleeve is closed and a plurality of air inlets are formed in the upper end peripheral wall, and the peripheral wall of the air outlet sleeve is provided with a plurality of air outlets; the driving mechanism drives the air inlet sleeve to move relative to the air outlet sleeve to adjust the height of the upper end of the air inlet sleeve extending out of the air outlet sleeve, and further adjust the height of the upper end of the air inlet sleeve extending into the air inlet to adjust the air intake amount.

[0005] The prior art provides a water heater with an air inlet adjusting device, since the air inlet adjusting device is in the form of a cylindrical structure and is installed inside the shell, it is easy to occupy the space inside the shell, which further causes structural interference and is not conducive to the layout of the internal structure of the shell. At the same time, since the size of the air inlet sleeve is matched with the size of the air inlet, the larger the diameter of the air inlet, the larger the size of the air inlet sleeve and the air outlet sleeve, and the more obvious the occupation of the internal space of the shell, which is not conducive to the flexibility of the setting of the air inlet and the air inlet adjusting device. SUMMARY

[0006] One of the technical problems solved by the utility model is to provide a shell assembly that can effectively solve the problem of large occupation of the internal space of the shell by the existing air inlet adjusting device, while realizing air intake adjustment and reducing the occupied space of the shell assembly.

[0007] The second technical problem solved by the utility model is to provide a gas water heating equipment which can effectively solve the problem of large space occupation of the air inlet adjusting structure in the existing gas water heating equipment and improve the space layout rationality of the gas water heating equipment.

[0008] The first technical problem is solved by the following technical scheme:

[0009] A shell assembly is applied to a gas water heating equipment, and the shell assembly comprises:

[0010] A shell having a mounting cavity, and one side of the shell is provided with an air inlet communicating with the mounting cavity;

[0011] An air volume adjusting module comprising a driving member and an air adjusting plate, the air adjusting plate is slidingly installed on the shell, and the driving member drives the air adjusting plate to slide in a first direction to adjust the air inlet area of the air inlet.

[0012] Compared with the background art, the shell assembly has the beneficial effects that: by setting the air adjusting plate and the driving member for driving the air adjusting plate to slide relative to the shell, the air adjusting plate can slide to adjust the air inlet area of the air inlet, thereby adjusting the air flow through the air inlet, the air amount entering the mounting cavity corresponds to the current load of the gas water heating equipment, the problem of excessive noise conducted outward due to the excessively large air inlet area of the air inlet is avoided while ensuring sufficient gas combustion, and the size of the air adjusting plate in the direction perpendicular to the sliding direction can be small because the air adjusting plate is slidingly installed on the shell, the air volume adjusting module can be flat, the floor space of the air volume adjusting module in the shell is reduced, the probability of interference between the air volume adjusting module and the internal structure of the shell is reduced, the space layout rationality of the internal structure of the shell assembly is improved, the problem of increased internal space of the shell assembly due to the setting of the air volume adjusting module is avoided while meeting the air volume adjustment, and the miniaturization of the shell assembly and the gas water heating equipment is facilitated.

[0013] In one embodiment, the air adjusting plate is provided with an adjusting air inlet, and the air adjusting plate slides relative to the air inlet of the shell to adjust the communication area of the adjusting air inlet and the air inlet.

[0014] In one embodiment, the air inlets are spaced apart in the first direction, the adjusting air inlets are spaced apart in the first direction and correspond to the air inlets one by one, and each adjusting air inlet can communicate with the corresponding air inlet.

[0015] In one of the embodiments, the air volume adjusting module further comprises a fixed plate, the fixed plate is arranged on the air inlet and detachably connected with the shell, the fixed plate is provided with fixed air inlets in communication with the air inlet, and the air adjusting plate is slidably arranged on the fixed plate.

[0016] The fixed air inlets are arranged at intervals along the first direction, the adjusting air inlets are arranged at intervals along the first direction and correspondingly arranged with the fixed air inlets, and each adjusting air inlet is capable of being in communication with the corresponding fixed air inlet.

[0017] In one of the embodiments, the interval of the adjacent two fixed air inlets along the first direction is greater than or equal to the width of the adjusting air inlet along the first direction.

[0018] The air volume adjusting module has a closed state, and when the air volume adjusting module is in the closed state, the orthogonal projection of the adjusting air inlet on the fixed plate is arranged in a staggered manner with the fixed air inlet.

[0019] In one of the embodiments, the interval of the adjacent two fixed air inlets along the first direction is equal to the interval of the adjacent two adjusting air inlets along the first direction, and the width of the fixed air inlet along the first direction is equal to the width of the adjusting air inlet along the first direction.

[0020] In one of the embodiments, the fixed plate is provided with slide rail portions on opposite sides along a second direction, one of the slide rail portions is provided with a slide groove on the side facing the other slide rail portion, the slide groove extends along the first direction and penetrates one end of the slide rail portion, the opposite sides of the air adjusting plate are slidably inserted into the two slide grooves, and the fixed air inlet is located between the two slide rail portions.

[0021] In one of the embodiments, the air volume adjusting module further comprises a driven part and a transmission part, the driving part is fixedly arranged relative to the shell, the driven part is arranged on the air adjusting plate, and the transmission part is transmissionally connected between the driven part and the transmission part.

[0022] The driven part is arranged on one end of the air adjusting plate along the first direction; and / or, the driving part comprises a driving motor, the driven part comprises a nut seat, the transmission part comprises a lead screw, and the nut seat is screwingly matched with the lead screw.

[0023] In one of the embodiments, the shell comprises an inner shell and an outer shell arranged outside the inner shell, the air volume adjusting module is arranged on the inner shell, the inner shell and the outer shell jointly form an air inlet cavity, the outer shell is provided with an air inlet, and the air inlet and the air inlet are in communication with the air inlet cavity.

[0024] And / or, the air volume adjusting module is mounted to a back plate of the shell.

[0025] The second technical problem is solved by the following technical solution:

[0026] A gas water heating device comprises the shell assembly as described above.

[0027] Compared with the background art, the gas water heating device has the beneficial effects that: by adopting the shell assembly, the noise during operation of the gas water heating device is reduced, the internal space layout rationality of the gas water heating device is improved, and the miniaturization of the gas water heating device is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A split structure schematic diagram of the shell assembly provided by the embodiment of the utility model is provided;

[0029] Figure 2 A structure schematic diagram of the air volume adjusting module provided by the embodiment of the utility model is provided;

[0030] Figure 3 A partial structure schematic diagram of the air volume adjusting module provided by the embodiment of the utility model is provided;

[0031] Figure 4 A structure schematic diagram of the air volume adjusting module provided by the embodiment of the utility model is provided;

[0032] Figure 5 A cross-sectional view of the air volume adjusting module in different states is provided.

[0033] REFERENCE NUMERALS:

[0034] 1, shell; 11, bottom shell; 111, air inlet; 112, smoke outlet; 12, face shell;

[0035] 2, air volume adjusting module; 21, air volume adjusting plate; 211, adjusting plate part; 2111, adjusting air inlet; 212, mounting boss; 2121, positioning groove; 22, driving member; 23, fixed plate; 231, main plate part; 2311, fixed air inlet; 2312, shielding part; 232, sliding rail part; 2321, sliding groove; 233, fixed lug part; 2331, fixed hole; 24, driven member; 241, cylindrical part; 242, connecting part; 25, transmission member;

[0036] 3, fastening screw. DETAILED DESCRIPTION

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] This embodiment provides a gas-fired water heater that can heat water using gas while reducing noise during operation, improving the reliability of the gas-fired water heater, and facilitating the miniaturization of the gas-fired water heater.

[0041] like Figures 1 to 4 As shown, specifically, the gas-fired water heater includes a casing assembly, a combustion heat exchange module, a control module, and a flue gas exhaust assembly. The casing assembly has an installation cavity, and its top is provided with a flue gas outlet 112 communicating with the installation cavity. The combustion heat exchange module is installed inside the installation cavity to heat water through gas combustion. The control module is installed on the casing assembly and communicates with the combustion heat exchange module to control its operation. The flue gas exhaust assembly is installed on the top of the casing assembly and communicates with the flue gas outlet 112 to discharge the flue gas generated during combustion.

[0042] It is worth noting that the specific structures of the combustion heat exchange module, control module, and flue gas exhaust assembly can all be set with reference to existing technologies. This is not the focus of this utility model, and will not be limited or elaborated here.

[0043] In the embodiment, the shell assembly comprises the shell 1 and the air volume adjusting module 2, wherein the shell 1 has a mounting cavity, and the shell 1 is provided with an air inlet 111 communicating with the mounting cavity on one side; the air volume adjusting module 2 comprises an air adjusting plate 21 and a driving member 22, the air adjusting plate 21 is slidingly installed on the shell 1, and the driving member 22 drives the air adjusting plate 21 to slide in a first direction to adjust the air inlet area of the air inlet 111.

[0044] The shell assembly provided in the embodiment can realize the adjustment of the air inlet area of the air inlet 111 by the sliding of the air adjusting plate 21, thereby realizing the adjustment of the air flow through the air inlet 111, so that the air amount entering the mounting cavity corresponds to the current load of the gas water heating device, the problem of excessive noise conducted outward due to the excessively large air inlet area of the air inlet 111 is avoided while the sufficiency of gas combustion is ensured; meanwhile, since the air adjusting plate 21 is slidingly installed on the shell 1, the size of the air adjusting plate 21 in the direction perpendicular to the sliding direction can be small, thereby the air volume adjusting module 2 can be arranged in a flat manner, the floor space of the air volume adjusting module 2 in the shell 1 is reduced, the probability of interference between the air volume adjusting module 2 and the internal structure of the shell 1 is reduced, the spatial layout rationality of the internal structure of the shell assembly is improved, the problem of the increase of the required internal space of the shell assembly due to the arrangement of the air volume adjusting module 2 is avoided while the air volume adjustment is met, and the miniaturization of the shell assembly and the gas water heating device is realized.

[0045] In an embodiment, the air adjusting plate 21 is provided with an adjusting air inlet 2111, and the sliding of the air adjusting plate 21 relative to the shell 1 adjusts the communication area of the adjusting air inlet 2111 and the air inlet 111. By arranging the adjusting air inlet 2111 on the air adjusting plate 21, the adjustment efficiency and convenience are improved.

[0046] In other embodiments, the air adjusting plate 21 can not be provided with the adjusting air inlet 2111, and the air inlet area of the air inlet 111 is adjusted by the degree of shielding of the air inlet 111 by the air adjusting plate 21.

[0047] It is worth noting that the communication area of the air inlet 111 and the adjusting air inlet 2111 is the area of the overlapping part of the projection of the adjusting air inlet 2111 on the plane where the air inlet 111 is arranged and the air inlet 111. Further, the part of the adjusting air inlet 2111 and the air inlet 111 communicating in a straight line forms an air vent, and the communication area is the area of the air vent.

[0048] To reduce the cost of the casing assembly, in an embodiment, the air volume adjusting module 2 comprises a fixing plate 23 which is detachably installed on the casing 1 and covers the air inlet 111, the fixing plate 23 is provided with fixing air inlets 2311 which are in communication with the air inlet 111, and the air adjusting plate 21 is slidably installed on the fixing plate 23. Thus, the air volume adjusting module 2 forms a module which is integrally detachable with the casing 1, the modularization of the air volume adjusting module 2 and the casing 1 is improved, the structure of the casing 1 is simplified, and the processing and improvement cost of the casing 1 is reduced. In other embodiments, the air adjusting plate 21 can also be directly installed on the casing 1.

[0049] In an embodiment, the air volume adjusting module 2 is installed on the back plate of the casing 1, so that the air inlet 111 and the air volume adjusting module 2 are not exposed to the user's field of view after the gas water heater is installed, and the appearance of the gas water heater is improved. At the same time, since the air inlet 111 is arranged on the back side of the casing 1, when the noise in the casing 1 is transmitted outward through the air inlet, part of the noise can be reflected back to the inside of the casing 1 through the wall on the back side of the casing 1, reducing the noise transmitted outward, and improving the use reliability and comfort of the gas water heater. In other embodiments, the air inlet 111 can be arranged on the left side or the right side or the top of the casing 1, and the installation position of the air volume adjusting module 2 is consistent with the arrangement position of the air inlet 111.

[0050] In an embodiment, the fixing air inlets 2311 are arranged in a plurality of intervals along the first direction, the adjusting air inlets 2111 are arranged in a plurality of intervals along the first direction, and the adjusting air inlets 2111 and the fixing air inlets 2311 are arranged one by one, and each adjusting air inlet 2111 can communicate with the corresponding fixing air inlet 2311. That is, when the adjusting air inlet 2111 and the corresponding fixing air inlet 2311 coincide, the overlapping part of the air inlet 111, the adjusting air inlet 2111 and the fixing air inlet 2311 forms an air inlet, and the communication area of each air inlet is synchronously adjusted, and then the total air volume is adjusted. This kind of arrangement can realize air inlet volume adjustment while improving air inlet uniformity in the first direction, reducing air inlet noise, and improving adjustment effect; at the same time, this kind of arrangement can reduce the size of a single fixing air inlet 2311 and adjusting air inlet 2111 while ensuring air inlet volume, so as to better ensure the local structural strength and rigidity of the casing assembly and improve the use performance of the casing assembly; at the same time, this kind of arrangement can reduce the sliding stroke of the air adjusting plate 21 while ensuring the adjustment range of the air inlet area of the air inlet 111, thereby reducing the overall space occupied by the air volume adjusting module 2.

[0051] In other embodiments, the air inlets 111 are arranged in a plurality of intervals along the first direction, the adjusting air inlets 2111 are arranged in a plurality of intervals along the first direction and correspond to the air inlets 111 one by one, and each adjusting air inlet 2111 can communicate with the corresponding air inlet 111.

[0052] In one embodiment, both the fixed air vent 2311 and the adjustable air vent 2111 are elongated openings extending along the second direction to better ensure the total air intake of the gas water heater under heavy load, while reducing the size of the fixed air vent 2311 and the adjustable air vent 2111 in the first direction, thereby reducing the size of the air volume adjustment module 2 in the first direction and reducing the footprint of the air volume adjustment module 2.

[0053] In another embodiment, the fixed air vent 2311 and / or the adjustable air vent 2111 can be rectangular holes, circular holes, etc., arranged in an array. In yet another embodiment, the fixed air vent 2311 and the adjustable air vent 2111 can also be inclined relative to the first direction.

[0054] Since the height of any side of the housing 1 is greater than its width, in one embodiment, the first direction is the vertical direction, so that the height of the air volume regulating module 2 in the vertical direction is greater than its width, so that the shape of the air volume regulating module 2 is adapted to the shape of the side wall of the housing 1 on the side where it is located, thereby improving the ease of installation of the air volume regulating module 2 on the housing 1.

[0055] In one embodiment, the housing 1 includes an inner shell and an outer shell surrounding the outer side of the inner shell. The airflow regulating module 2 is disposed in the inner shell, and the inner shell and outer shell together form an air inlet cavity. An air inlet is provided on the outer shell, and both the air inlet and the fixed air outlet 2311 are connected to the air inlet cavity. That is, air first enters the air inlet cavity through the air inlet, and then enters the ventilation opening formed by the connection of the fixed air outlet 2311 and the regulating air outlet 2111.

[0056] The inner shell includes a bottom shell 11 with an open front side and a front shell 12 located in front of the bottom shell 11. The front shell 12 covers the open front side of the bottom shell 11, and the front shell 12 and the bottom shell 11 together form a mounting cavity. The control panel of the control module is mounted on the front shell 12. The bottom shell 11 and the front shell 12 are respectively provided with an air inlet 111, and the top of the bottom shell 11 is provided with a smoke exhaust port 112.

[0057] Furthermore, the air inlet can be an elongated hole extending along the width of the housing, and multiple air inlets can be spaced apart along the vertical direction.

[0058] It is worth noting that the specific structure of the inner shell and outer shell, as well as the matching structure of the two, can be set with reference to the existing technology. This is not the focus of this embodiment and will not be described in detail here.

[0059] like Figures 2 to 5 As shown, in one embodiment, the fixing plate 23 forms a shielding portion 2312 between two adjacent fixed air vents 2311, and the width of the shielding portion 2312 along the first direction is greater than or equal to the width of the regulating air vent 2111. The airflow regulating module 2 has a closed state, such as...Figure 5 (a) When the air volume adjustment module 2 is in the closed state, the normal projection of the adjustment air port 2111 on the fixed plate 23 is misaligned with the fixed air port 2311. That is, when the air volume adjustment module 2 is in the closed state, the communication area is zero, and the fixed air port 2311 is blocked by the air register 21. With this arrangement, when the external temperature is low, external air will not enter the interior of the casing 1 through the fixed air port 2311 and the adjustment air port 2111, reducing the probability of the interior of the casing 1 being too cold or even freezing, and reducing the impact of external cold air on combustion, further improving the use reliability and use experience of the gas water heating equipment. At the same time, this arrangement can increase the adjustment range of the communication area and improve the adjustment flexibility.

[0060] The air volume adjustment module 2 has a fully open state, as shown in Figure 5 (c) When the air volume adjustment module 2 is in the fully open state, the projection of the adjustment air port 2111 on the fixed plate 23 is entirely within the fixed air port 2311 or the projection of the adjustment air port 2111 on the fixed plate 23 covers the corresponding fixed air port 2311, that is, the air vent has the maximum communication area, and the casing assembly has the maximum air intake volume.

[0061] When the air volume adjustment module 2 is between the closed state and the fully open state, as shown in Figure 5 (b), the normal projection of the adjustment air port 2111 on the fixed plate 23 partially overlaps the fixed air port 2311, and by changing the overlapping area, the communication area of the air vent formed by the cooperation of the two is adjusted.

[0062] In an embodiment, the size of the fixed air port 2311 along the first direction is equal to the size of the adjustment air port 2111 along the first direction, and the spacing between adjacent two fixed air ports 2311 is equal to the spacing between adjacent two adjustment air ports 2111, so that when the air volume adjustment module 2 is in the fully open state, the fixed air port 2311 and the adjustment air port 2111 completely overlap, reducing the control difficulty and simplifying the structure of the fixed plate 23 and the air register 21. In other embodiments, the widths of the fixed air port 2311 and the adjustment air port 2111 in the first direction can also be different.

[0063] To improve the sliding reliability of the air regulating plate 21, the fixing plate 23 is provided with two slide rails 232 that are opposite to each other and spaced apart along the second direction. A groove 2321 is formed on the opposite side of each slide rail 232. Both the slide rails 232 and the groove 2321 extend along the first direction, and the groove 2321 passes through one end of the slide rail 232. The fixed air outlet 2311 is located between the two slide rails 232. The opposite sides of the air regulating plate 21 are slidably inserted into the two grooves 2321. This allows the sliding of the air regulating plate 21 along the first direction to be guided by the cooperation between the groove 2321 and the air regulating plate 21, ensuring the sliding reliability of the air regulating plate 21. Simultaneously, the groove 2321 passes through one side of the slide rail 232 along the first direction, facilitating the insertion of the edge of the air regulating plate 21 into the groove 2321 through the end slot of the groove 2321, improving the assembly convenience and efficiency of the air regulating plate 21 and the fixing plate 23.

[0064] Specifically, the fixing plate 23 includes a main plate portion 231, a fixing air vent 2311 is opened on the main plate portion 231, and a slide rail portion 232 is protruding on one side of the main plate portion 231.

[0065] It is worth noting that other types of sliding guide structures can also be provided between the fixed plate 23 and the air regulating plate 21. For example, an adjustment groove can be provided in one of the fixed plate 23 and the air regulating plate 21, and an adjustment protrusion can be provided in the other. The adjustment groove extends along the first direction and is slidably inserted into the adjustment protrusion. This utility model does not limit or elaborate on the sliding guide structure between the air regulating plate 21 and the fixed plate 23.

[0066] To better facilitate the installation of the fixing plate 23 on the housing 1, the edge of the main plate portion 231 is provided with a fixing ear 233 protruding outward. Multiple fixing ears 233 are spaced apart along the circumference of the main plate portion 231, and the fixing ears 233 are detachably connected to the housing 1 by fasteners. Specifically, the fixing ears 233 are provided with fixing holes 2331, and the fixing ears 233 are connected to the housing 1 by fastening screws 3 passing through the fixing holes 2331.

[0067] Furthermore, the main body plate 231 is provided with fixing ears 233 on both sides of the second direction, and at least two fixing ears 233 are provided at intervals along the corresponding side of the main body plate 231 to ensure the installation stability and reliability of the air volume adjustment module 2 on the housing 1.

[0068] like Figure 3 and Figure 4 As shown, the air regulating plate 21 includes an adjusting plate portion 211, which is fitted to the main plate portion 231. The two sides of the adjusting plate portion 211 are slidably inserted into two sliding grooves 2321 to simplify the structure of the air regulating plate 21.

[0069] In an embodiment, the driving member 22 is further provided with a driven member 24 and a transmission member 25, the driving member 22 is installed on the fixed plate 23, the driven member 24 is installed on the air volume adjusting plate 21, and the transmission member 25 is transmissionally connected between the driven member 24 and the driving member 22 to transmit the power of the driving member 22 to the driven member 24. The installation of the driving member 22 on the fixed plate 23 can reduce the driving load, thereby reducing the cost. In other embodiments, the driven member 24 can also be installed on the fixed plate 23, and the driving member 22 can be installed on the air volume adjusting plate 21.

[0070] In an embodiment, the driving member 22 is installed on one end of the fixed plate 23 along the first direction, and the driven member 24 is installed on one end of the air volume adjusting plate 21 along the first direction, thereby reducing the size of the air volume adjusting module 2 along the second direction and improving the spatial layout rationality of the air volume adjusting module 2. Meanwhile, this kind of arrangement can improve the stability and reliability of the air volume adjusting plate 21 during operation. Further, the driven member 24 is installed on the middle position of the air volume adjusting plate 21 along the second direction.

[0071] In order to improve the adjustment reliability, the driving member 22 comprises a driving motor, the driven member 24 comprises a nut seat, and the transmission member 25 comprises a lead screw which is coaxially connected with the output shaft of the driving motor and extends along the first direction, and the nut seat is threadedly screwed with the lead screw. Thus, when the output shaft of the driving motor rotates, the lead screw rotates to drive the nut seat to move along the lead screw, thereby realizing the movement of the air volume adjusting plate 21 along the first direction. The arrangement of the lead screw and nut transmission structure for realizing the movement of the air volume adjusting plate 21 along the first direction is beneficial to the control of the stroke of the air volume adjusting plate 21 along the first direction, thereby improving the accuracy of air volume adjustment. The driving motor is a servo motor.

[0072] In order to improve the convenience of installation of the nut seat, one end of the air volume adjusting plate 21 is provided with a mounting boss 212 which protrudes outward, and the nut seat is detachably installed on the mounting boss 212. Specifically, the nut seat comprises a cylindrical portion 241 and a connecting portion 242 which extends outward along the radial direction of the cylindrical portion 241, the cylindrical portion 241 is provided with a threaded hole in which the lead screw is arranged, and the mounting boss 212 is provided with an arc-shaped positioning groove 2121, the cylindrical portion 241 is arranged in the positioning groove 2121, and the connecting portion 242 is detachably connected with the mounting boss 212. Thus, the installation and positioning of the nut seat on the mounting boss 212 can be realized through the cooperation of the cylindrical portion 241 and the positioning groove 2121, thereby improving the installation reliability.

[0073] The connecting portion 242 is preferably arranged on each of the opposite sides of the cylindrical portion 241, and the two connecting portions 242 are both detachably connected with the mounting boss 212, so as to ensure the installation stability and reliability of the driven member 24 on the air volume adjusting plate 21.

[0074] The noise reduction process of the gas water heating equipment is as follows:

[0075] When the control module of the gas water heater receives an instruction to start, it first adjusts the air volume adjustment module 2 to the fully open state, and then starts the fan, thereby avoiding false positives when detecting whether the air duct is blocked;

[0076] After the fan detection is completed, the control module calculates the required working load according to the user-set temperature, water inflow and temperature, and then adjusts the fan speed to match the current load.

[0077] The control module adjusts the air regulating plate 21 according to the functional relationship between the air inlet area of the air inlet 111 and the fan, thereby adjusting the communication area.

[0078] Specifically, when the load is small, the air inlet area will decrease, and at the same time, since the size of the noise inside the shell 1 propagating to the outside is proportional to the air inlet area, the smaller the air inlet area, the more energy loss required for the sound to bypass the shell 1 and reach the outside, and the better the noise reduction effect.

[0079] In the specific contents of the above specific embodiments, each technical feature can be combined arbitrarily without contradiction, and to make the description concise, not all possible combinations of the above technical features are described, however, as long as the combination of these technical features does not exist contradiction, it should be considered as the scope of the description.

[0080] The specific contents of the above specific embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A casing assembly for a gas water heating apparatus, characterised in that, The shell assembly comprises: A shell (1) having a mounting cavity, one side of the shell (1) being provided with an air inlet (111) communicating with the mounting cavity; An air volume adjusting module (2) comprising a driving member (22) and an air adjusting plate (21), the air adjusting plate (21) being slidingly installed on the shell (1), and the driving member (22) driving the air adjusting plate (21) to slide in a first direction to adjust the air inlet area of the air inlet (111).

2. The enclosure assembly of claim 1, wherein, The air adjusting plate (21) is provided with an adjusting air inlet (2111), and the air adjusting plate (21) slides relative to the air inlet (111) of the shell (1) to adjust the communication area of the adjusting air inlet (2111) and the air inlet (111).

3. The enclosure assembly of claim 2, wherein, The air inlets (111) are spaced apart in the first direction, and the adjusting air inlets (2111) are also spaced apart in the first direction and correspond to the air inlets (111) one by one, each adjusting air inlet (2111) being capable of directly communicating with the corresponding air inlet (111).

4. The enclosure assembly of claim 2, wherein, The air volume adjusting module (2) further comprises a fixed plate (23), the fixed plate (23) being arranged on the air inlets (111) and being detachably connected with the shell (1), the fixed plate (23) being provided with fixed air inlets (2311) communicating with the air inlets (111), and the air adjusting plate (21) being slidingly installed on the fixed plate (23). The fixed air inlets (2311) are spaced apart in the first direction, and the adjusting air inlets (2111) are also spaced apart in the first direction and correspond to the fixed air inlets (2311) one by one, each adjusting air inlet (2111) being capable of directly communicating with the corresponding fixed air inlet (2311).

5. The enclosure assembly of claim 4, wherein, The distance between two adjacent fixed air inlets (2311) in the first direction is greater than or equal to the width of the adjusting air inlet (2111) in the first direction. The air volume adjusting module (2) has a closed state, and when the air volume adjusting module (2) is in the closed state, the orthogonal projection of the adjusting air inlet (2111) on the fixed plate (23) is arranged in a staggered manner with the fixed air inlets (2311).

6. The enclosure assembly of claim 5, wherein, The distance between two adjacent fixed air inlets (2311) in the first direction is equal to the distance between two adjacent adjusting air inlets (2111) in the first direction, and the width of the fixed air inlet (2311) in the first direction is equal to the width of the adjusting air inlet (2111) in the first direction.

7. The enclosure assembly of claim 4, wherein, The fixed plate (23) is provided with slide rail portions (232) on opposite sides in a second direction, one of the slide rail portions (232) being provided with a sliding groove (2321) on the side facing the other slide rail portion (232), the sliding groove (2321) extending in the first direction and penetrating one end of the slide rail portion (232), and the air adjusting plate (21) being slidingly inserted into two sliding grooves (2321) on opposite sides, respectively, and the fixed air inlets (2311) being located between the two slide rail portions (232).

8. The enclosure assembly of any of claims 1-7, wherein, The air volume adjusting module (2) further comprises a driven part (24) and a transmission part (25), the driving part (22) is fixedly arranged relative to the shell (1), the driven part (24) is mounted on the air adjusting plate (21), and the transmission part (25) is transmissionally connected between the driven part (24) and the transmission part (25); The driven part (24) is mounted on one end of the air adjusting plate (21) along the first direction; and / or the driving part (22) comprises a driving motor, the driven part (24) comprises a nut seat, the transmission part (25) comprises a screw rod, and the nut seat is screwingly matched with the screw rod.

9. The enclosure assembly of any of claims 1-7, wherein, The shell (1) comprises an inner shell and an outer shell arranged outside the inner shell, the air volume adjusting module (2) is mounted on the inner shell, the inner shell and the outer shell jointly form an air inlet cavity, the outer shell is provided with an air inlet, and the air inlet (111) and the air inlet are both in communication with the air inlet cavity; And / or the air volume adjusting module (2) is mounted on the back plate of the shell (1).

10. A gas water heating apparatus, characterised in that, The shell assembly comprises the shell assembly according to any one of claims 1-9.

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