Gas-fired heating devices and garment care machines with them

Abstract

This invention relates to a gas-fired heating device and a garment care machine having the same. The gas-fired heating device includes: a burner bracket; a burner horizontally fixed to the top of the burner bracket and having an inlet end for connecting to an external gas source and an outlet end for ejecting gas, the outlet end being positioned away from the top; and an ignition needle having a fixed end fixed inside the burner bracket and an ignition end located directly below the outlet end for igniting the gas, and the ignition needle being positioned to extend obliquely from the fixed end to the ignition end towards the burner. By employing this gas-fired heating device, the garment care machine of this invention can effectively ignite the gas, improving ignition reliability.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more specifically to a gas-fired heating device and a garment care machine having the same. Background Technology

[0002] As people's living standards continue to improve, various practical clothing care appliances are emerging, such as washing machines, dryers, and garment care machines. Compared to traditional washing machines and dryers, garment care machines can provide comprehensive care for clothes (especially high-end garments), including drying, wrinkle removal, odor removal, sterilization, and mite removal. Therefore, garment care machines are gaining popularity among users.

[0003] Based on the heat source, garment dryers can be broadly categorized into electric heating garment dryers, heat pump garment dryers, and gas-fired garment dryers. Gas-fired garment dryers utilize an internal gas-fired heating element to burn natural gas, converting bioenergy into heat energy to generate drying air for drying clothes. Gas-fired heating elements have high heating efficiency, allowing garment dryers to dry clothes quickly and shorten drying time. Furthermore, natural gas is relatively inexpensive, resulting in lower operating costs for gas-fired garment dryers.

[0004] Chinese invention patent application CN109140439A discloses a heating device for a clothes dryer. A burner and an ignition needle are installed at the inlet end of the combustion chamber of this heating device. The central axis of the ignition needle is parallel to the central axis of the burner, and the ends of both the burner and the ignition needle extend into the combustion chamber, allowing the gas ejected from the burner to quickly reach the vicinity of the ignition needle and ignite it, ensuring the reliability of the heating device. However, in practice, it has been found that setting the central axis of the ignition needle parallel to the central axis of the burner has the following problems: if the ignition needle is improperly installed or becomes loose, the ignition end of the ignition needle can easily deviate from the central axis of the burner, making it difficult for the electric spark generated at the ignition end to quickly and timely ignite the gas ejected from the outlet. Therefore, there is a possibility of improvement to this heating device for the clothes dryer.

[0005] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0006] To address the technical problem of existing gas-fired heating devices being unable to quickly and timely ignite gas, this invention provides a gas-fired heating device. The gas-fired heating device includes: a burner bracket; a burner, horizontally fixed to the top of the burner bracket, having an inlet end for connecting to an external gas source and an outlet end for ejecting gas, the outlet end being positioned away from the top; and an ignition needle, having a fixed end fixed inside the burner bracket and an ignition end located directly below the outlet end for igniting the gas, and the ignition needle being positioned to extend obliquely from the fixed end to the ignition end towards the burner.

[0007] The gas-fired heating device of the present invention includes a burner support, a burner, and an ignition needle. The burner is horizontally fixed to the top of the burner support and has an inlet end for connecting to an external gas source and an outlet end for ejecting gas, allowing the gas entering the burner from the inlet end to flow in a generally horizontal direction and be ejected from the outlet end, ensuring a high combustion rate. The outlet end of the burner is positioned away from the top of the burner support to mate with the ignition end on the ignition needle. The fixed end of the ignition needle is positioned inside the burner support, both fixing the ignition needle to the burner support and protecting it. Furthermore, the ignition end of the ignition needle is positioned directly below the outlet end of the burner, allowing the electric spark generated at the ignition end to easily contact the gas ejected from the outlet end, thereby quickly igniting the gas. More importantly, the ignition needle is positioned to extend obliquely towards the burner from the fixed end towards the ignition end. With the above settings, the electric spark generated at the ignition end is always directed towards the direction close to the gas outlet end, and will not deviate from the gas outlet end. Therefore, the gas ejected from the gas outlet end can be effectively and timely ignited, improving the ignition reliability of the gas heating device of the present invention.

[0008] In the preferred embodiment of the aforementioned gas-fired heating device, an arc-shaped cover protruding away from the ignition end is formed on the gas outlet end. Providing this arc-shaped cover at the gas outlet end facilitates gas accumulation near the gas outlet end, thereby increasing gas density and improving ignition success rate. Furthermore, the arc-shaped cover can partially shield the ignition needle, preventing damage from collisions with other components, thus extending the service life of the ignition needle.

[0009] In the preferred embodiment of the above-mentioned gas-fired heating device, the central axis of the ignition needle and the central axis of the burner are clamped to form a predetermined acute angle, and the range of the predetermined acute angle is 18°-30°. This setting ensures that the predetermined acute angle has a suitable range, preventing an excessively large angle from increasing the height of the burner support and occupying too much space, and also preventing an excessively small angle from reducing the probability of the electric spark generated at the ignition end contacting the gas, thus affecting the reliability of ignition.

[0010] In the preferred embodiment of the above-mentioned gas-fired heating device, the gas-fired heating device further includes: a gas pipe adapted to be connected to the external gas source; a gas valve fixed on the top and spaced apart from the burner, configured to be connected to the gas pipe and control the on / off state of the gas pipe, and the gas valve is also provided with a nozzle facing the inlet end; and a combustion cylinder, the combustion cylinder forming a combustion chamber in which the gas is allowed to burn, and the outlet end and the ignition end are located inside the combustion chamber. The gas pipe is configured to be connected to the external gas source, so that the gas can conveniently enter the burner along the gas pipe. The gas valve is fixed on the top of the burner support and spaced apart from the burner for matching with the burner. In addition, the gas valve can conveniently control the on / off state of the gas pipe to accurately control the amount of gas entering the gas pipe. The combustion cylinder forming a combustion chamber in which the gas is allowed to burn improves the safety of gas combustion. Furthermore, the fact that both the outlet end and the ignition end are located inside the combustion chamber effectively prevents gas leakage and further improves safety.

[0011] To address the technical problem of existing gas-fired heating devices' difficulty in quickly and promptly igniting gas, this invention also provides a garment care machine. The garment care machine includes: a cabinet defining a receiving cavity for placing garments to be treated and a heating chamber spaced apart from the receiving cavity; and a gas-fired heating device according to any one of the above claims, the gas-fired heating device being arranged in the heating chamber and configured to heat drying air supplied to the receiving cavity for drying the garments to be treated. By employing the gas-fired heating device according to any one of the above claims, the garment care machine of this invention not only effectively ignites the gas and improves ignition reliability, but also possesses high heating efficiency, improves drying efficiency, and reduces operating costs.

[0012] In the preferred embodiment of the above-mentioned garment care machine, the burner bracket has a U-shaped body extending vertically and opening towards the rear of the cabinet, a top located above the U-shaped body, and a fixed flange extending vertically outward from the bottom edge of the U-shaped body, wherein the fixed flange is fixedly connected to the bottom plate of the cabinet. This configuration results in a simple structure for the burner bracket, making it easy to manufacture.

[0013] In the preferred embodiment of the aforementioned garment care machine, the fixed flange has a first flange near the front of the cabinet, and a second and third flange extending from the front towards the rear and opposite to each other. The first flange is threadedly connected to the base plate, and the second and third flanges are snap-fitted to the base plate. The first flange near the front of the cabinet is fixed to the base plate by a threaded connection, and the second and third flanges near the rear of the cabinet are fixed to the base plate by snap-fitting. This allows the user to easily disassemble the burner bracket and components such as the burner, ignition needle, and gas valve fixed to the burner bracket from the front of the cabinet, facilitating disassembly, inspection, and maintenance.

[0014] In the preferred embodiment of the above-mentioned garment care machine, each of the second and third flanges is provided with a through hole, and a vertically downward extending snap-fit ​​element is formed on one lateral edge of each through hole. Furthermore, a snap-fit ​​hole is formed on the base plate to receive the corresponding snap-fit ​​element. The snap-fit ​​element and snap-fit ​​hole allow the second and third flanges to be easily snapped onto the base plate.

[0015] In the preferred embodiment of the above-mentioned garment care machine, a tapered connector is formed on each of the second and third flanges, away from the front portion. A combustion cylinder support for mounting the combustion cylinder of the gas-fired heating device is also fixed on the base plate, and a connection cavity is formed between the combustion cylinder support and the base plate, allowing the corresponding tapered connector to be inserted. The tapered connector and the connection cavity further improve the reliability of the connection between the burner support and the base plate. Furthermore, the connection cavity is arranged to be formed by the combustion cylinder support and the base plate together, which not only facilitates processing but also increases the fit and connection between the burner support, the base plate, and the combustion cylinder support, improving structural stability.

[0016] In the preferred embodiment of the above-mentioned garment care machine, a vertically upward extending limiting protrusion is formed on the tapered connector. The limiting protrusion ensures reliable connection between the tapered connector and the insertion cavity, and also improves the rigidity and strength of the tapered connector, extending its service life. Attached Figure Description

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the garment care machine of the present invention;

[0019] Figure 2 This is a schematic diagram of an embodiment of the gas-fired heating device of the present invention fixed on a base plate;

[0020] Figure 3 This is a schematic diagram of the structure of an embodiment of the gas-fired heating device of the present invention;

[0021] Figure 4 This is a schematic diagram of an embodiment of the gas-fired heating device of the present invention, which removes the gas pipe and the combustion cylinder;

[0022] Figure 5 This is an embodiment of the gas-fired heating device of the present invention that removes the gas pipe and combustion cylinder. Figure 4 The sectional view obtained by the AA section line shown;

[0023] Figure 6 yes Figure 4 The image shown is a partial enlarged view of part A of the gas-fired heating device of the present invention, after removing the gas pipe and the combustion cylinder;

[0024] Figure 7 This is a schematic diagram of the structure of an embodiment of the burner support in the gas-fired heating device of the present invention;

[0025] Figure 8 yes Figure 7 The image shown is a partial enlarged view of part B of the gas-fired heating device of the present invention, after removing the gas pipe and the combustion cylinder. Attached image description:

[0027] 1. Garment care machine; 10. Cabinet; 10a. Front; 10b. Rear; 11. Top panel; 12. Bottom panel; 13. Front panel; 14. Rear panel; 15. Inner liner; 151. Top wall; 152. Bottom wall; 153. Side wall; 154. Rear wall; 155. Receiving cavity; 16. Heating chamber; 17. Air supply duct; 171. Bottom air outlet; 172. Side air outlet; 1721. Oscillating blade assembly; 173. Top air outlet; 18. Exhaust duct; 18a. First exhaust duct; 18b. Second exhaust duct; 181. Air intake; 181 1. Filter element; 182. Upper exhaust vent; 183. Lower exhaust vent; 191. First fan; 192. Second fan; 20. Gas heating device; 21. Gas pipe; 22. Gas valve; 221. Nozzle; 23. Burner; 23a. Inlet; 23b. Outlet; 231. Upper housing; 2311. Arc-shaped cover; 232. Lower housing; 233. Air guide chamber; 24. Burner support; 241. U-shaped body; 2411. First vertical wall; 2412. Second vertical wall; 2413. Third vertical wall; 242. Top; 2 421. Gas valve fixing part; 24211. First fixing hole; 2422. Burner fixing part; 24221. First lug; 24222. Second lug; 24223. Second fixing hole; 243. Fixing flange; 2431. First fixing flange; 24311. Screw hole; 2432. Second flange; 24321. Through hole; 24322. Snap-fit ​​part; 243221. Vertical surface; 243222. Oblique surface; 243223. Horizontal surface; 24323. Conical connector; 243231. Limiting protrusion; 2433. Third flange; 25. Ignition needle; 251. Fixed end; 252. Ignition end; 26. Combustion tube; 261. Inlet end; 262. Outlet end; 263. Combustion chamber; 27. Combustion tube support; 271. Z-shaped body; 2711. Horizontal bottom wall; 27111. Insertion protrusion; 2712. Vertical connecting wall; 2713. Horizontal top wall; 28. Flame detector; 29. ​​Air distribution duct; 30. Humidification component; 31. Water storage box; 32. Steam generator; 33. Steam nozzle; 40. Aromatherapy mechanism; 50. Clothes hanger; 2. Clothes to be treated. Detailed Implementation

[0028] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0029] It should be noted that in the description of this invention, terms such as "upper," "lower," "left," "right," "inner," and "outer," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set" and "connection" 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 direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] To address the technical problem of existing gas-fired heating devices being unable to quickly and timely ignite gas, this invention provides a gas-fired heating device 20. The gas-fired heating device 20 includes: a burner support 24; a burner 23, horizontally fixed to the top 242 of the burner support 24, having an inlet end 23a connectable to an external gas source and an outlet end 23b for ejecting gas, the outlet end 23b being positioned away from the top 242; and an ignition needle 25, having a fixed end 251 fixed inside the burner support 24 and an ignition end 252 located directly below the outlet end 23b for igniting the gas, and the ignition needle 251 being positioned to extend obliquely from the fixed end 251 to the ignition end 252 towards the burner 23.

[0032] In this article, unless explicitly stated otherwise, the terms "left," "right," "up," "down," "front," and "back" are based on... Figure 2 Regarding the directions shown.

[0033] Figure 1 This is a schematic diagram of an embodiment of the garment care machine of the present invention. Figure 1 As shown, in one or more embodiments, the garment care machine 1 of the present invention includes a cabinet 10 and a gas-fired heating device 20 arranged within the cabinet 10. The cabinet 10 has opposing front portions 10a and rear portions 10b. Based on Figure 1As shown in the diagram, the front part 10a is on the right and the rear part 10b is on the left. The cabinet 10 includes a top plate 11, a bottom plate 12, a front plate 13, a rear plate 14, and side plates (not shown) connected sequentially to form a generally rectangular parallelepiped shape. A doorway (not shown) is provided in the front plate 13, and a door (not shown) is rotatably fixed to the front plate 13 for opening and closing the doorway. The doorway can be fixed to the front plate 13 by, but is not limited to, a pivot connection and a hinge.

[0034] See also Figure 1 An inner liner 15 is provided inside the cabinet body 10. The inner liner 15 has a top wall 151, a bottom wall 152, a side wall 153, and a rear wall 154 connected in sequence to form a receiving cavity 155 with an opening facing the front part 10a. A clothes rack 50 is provided at the top of the receiving cavity 155 for hanging clothes 2 to be processed. The number of clothes racks 50 can be set to multiple according to actual needs, such as 2, 3, etc. Alternatively, other suitable storage devices can be provided in the receiving cavity 155, such as a shelf in the middle of the receiving cavity 155, to enhance the storage function.

[0035] See also Figure 1 The cabinet 10 also includes a heating chamber 16 spaced apart from the receiving cavity 155. The heating chamber 16 is located in the lower part of the receiving cavity 155 and is separated from it by the bottom wall 152 of the inner liner 15. The heating chamber 16 is configured to accommodate a gas-fired heating device 20, so that the heat generated by the gas-fired heating device 20 can be easily transferred into the receiving cavity 155 to dry the clothes 20 to be dried.

[0036] See also Figure 1An air supply duct 17 is formed within the cabinet 10. The air supply duct 17 is connected to the output end of the gas-fired heating device 20 to supply drying air generated by the gas-fired heating device 20. In one or more embodiments, the air supply duct 17 has a bottom air outlet 171, a side air outlet 172, and a top air outlet 173 spaced apart from each other. The bottom air outlet 171 is arranged on the bottom wall 152 of the inner liner 15, the side air outlet 172 is arranged on the rear wall 154 of the inner liner 15, and the top air outlet 173 is connected to the clothes hanger 50. With the above arrangement, the drying air heated by the gas-fired heating device 20 can flow vertically upward from the bottom air outlet 171, flow vertically towards the front 10a from the side air outlet 172, and flow vertically downward from the top air outlet 173, thereby achieving drying treatment of the clothes 2 hanging on the clothes hanger 50 from different directions. In one or more embodiments, a sway vane assembly 1721 is further provided at the side air outlet 172. The sway vane assembly 1721 includes a connecting rod, a plurality of sway vanes arranged on the connecting rod, and a motor (not shown in the figure) that can drive the connecting rod to reciprocate. The sway vane assembly 1721 can adjust the flow direction of the drying air flowing out of the side air outlet 172, further enhancing the uniformity of drying. In one or more embodiments, a second fan 192 is provided in the air supply duct 17. The second fan 192 is located between the bottom air outlet 171 and the side air outlet 172 to increase the flow velocity of the drying air in the air supply duct 17.

[0037] See also Figure 1An exhaust duct 18, matching the supply air duct 17, is also formed within the cabinet 10. In one or more embodiments, the exhaust duct 18 includes a first exhaust duct 18a. The first exhaust duct 18a is located between the top plate 11 of the cabinet 10 and the top wall 151 of the inner liner 15. The first exhaust duct 18a has an air intake 181 arranged on the top wall 151 and an upper exhaust vent 182 arranged on the upper part of the rear plate 14 of the cabinet 10. With the above arrangement, the humid and hot air generated after the drying air exchanges heat with the clothes 2 to be treated can be discharged from the air intake 181 along the first exhaust duct 18a and through the upper exhaust vent 182. In one or more embodiments, a first fan 191 is provided in the first exhaust duct 18a and above the air intake 181 to increase the flow rate of the humid and hot air in the first exhaust duct 18a. In one or more embodiments, a filter element 1811 is also provided at the air intake 181 to filter impurities such as lint from the humid and hot air. The filter element 1811 may be, but is not limited to, a metal filter, a nylon filter, a non-woven fabric filter, etc. In one or more embodiments, the exhaust duct 18 also includes a second exhaust duct 18b that communicates with the first exhaust duct 18a. The second exhaust duct 18b is located between the rear panel 14 of the cabinet 10 and the rear wall 154 of the inner liner 15 and extends downward to the bottom plate 12. The second exhaust duct 18b has an inlet end (not shown in the figure) that communicates with the first exhaust duct 18a. In addition, a lower exhaust port 183 is provided at the lower part of the rear panel 14 of the cabinet 10, so that some of the humid and hot air discharged from the air intake 181 can be discharged from the lower exhaust port 183 along the second exhaust duct 18b to enhance exhaust efficiency.

[0038] like Figure 1 As shown, in one or more embodiments, the garment care machine 1 of the present invention further includes a humidifying component 30. The humidifying component 30 is arranged inside the heating chamber 16 and spaced apart from the gas-fired heating device 20. In one or more embodiments, the humidifying component 30 includes components such as a water storage box 31, a steam generator 32, and a nozzle 33 connected in sequence by pipes. The water storage box 31 is used to hold distilled water, tap water, or other suitable liquids. The steam generator 32 is communicatively connected to the control system (not shown) of the garment care machine 1 to automatically control the opening and closing of the steam generator 32. The steam generator 32 is configured to process the liquid in the water storage box 31 into a mist of steam. This steam is sprayed from the nozzle 33, which is arranged in the air supply duct 17 and near the bottom air outlet 171, into the receiving cavity 155 to regulate the humidity in the receiving cavity 155 and prevent the humidity from being too low and damaging the garments 2 to be treated.

[0039] like Figure 1As shown, in one or more embodiments, the garment care machine 1 of the present invention further includes an aromatherapy mechanism 40 for delivering fragrance to the garments 2 to be treated. The aromatherapy mechanism 40 is arranged in the air supply duct 17 and located between the second fan 192 and the side air outlet 172, so that the fragrance generated by the aromatherapy mechanism 40 can smoothly enter the receiving cavity 155 from the side air outlet 172 and the top air outlet 173 under the drive of the second fan 192, thereby performing aromatherapy treatment on the garments 2 to be treated, thereby improving the user experience.

[0040] Below, in conjunction with the appendix Figures 2-8 The embodiments of the gas-fired heating device 20 of the present invention are described in detail below. It should be noted that, in addition to the garment care machine 1 shown in any of the above embodiments, the gas-fired heating device 20 of the present invention can also be used in other suitable garment care equipment, such as a tumble dryer.

[0041] Figure 2 This is a schematic diagram of an embodiment of the gas-fired heating device of the present invention fixed on a base plate; Figure 3 This is a schematic diagram of an embodiment of the gas-fired heating device of the present invention. Figure 2 As shown, in one or more embodiments, the gas-fired heating device 20 of the present invention is detachably fixed to the base plate 12 of the cabinet 10. For example... Figure 2 and Figure 3 In one or more embodiments, the gas-fired heating device 20 includes components such as a gas pipe 21, a gas valve 22, a burner 23, a burner bracket 24, an ignition needle 25, a combustion cylinder 26, and a combustion cylinder bracket 27. One end of the gas pipe 21 is connected to an external gas source, and the other end of the gas pipe 21 is connected to the gas inlet (not shown in the figure) of the gas valve 22. The external gas source includes, but is not limited to, natural gas, coal gas, and liquefied petroleum gas. The gas valve 22 is fixed on the burner bracket 24. The gas valve 22 is in communication with the control system of the garment care machine 1 to automatically control the flow of gas. The gas valve 22 has a nozzle 221 facing the burner 23 (see...). Figure 5 When the gas valve 22 is opened, the gas can be smoothly injected into the burner 23 through the nozzle 221.

[0042] See also Figure 2 The burner support 24 is located on the base plate 12 near the front 10a. Figure 7 This is a schematic diagram of the burner support in an embodiment of the gas-fired heating device of the present invention. Figure 7As shown, in one or more embodiments, the burner support 24 includes a U-shaped body 241, a top 242, and a fixed flange 243. The U-shaped body 241 has a first vertical wall 2411, a second vertical wall 2412, and a third vertical wall 2413 connected in sequence to form a U-shaped structure with the opening facing the rear portion 10b in the assembled state. Based on Figure 2 As shown, the first vertical wall 2411 has a generally rectangular shape and extends generally in the left-right direction. The second vertical wall 2412 and the third vertical wall 2413 each have a generally rectangular shape and are arranged on the left and right sides of the first vertical wall 2411, respectively. Furthermore, the second vertical wall 2412 and the third vertical wall 2413 are parallel to each other and extend generally in the front-back direction.

[0043] See also Figure 7 The top 242 of the burner bracket 24 includes a gas valve fixing portion 2421 and a burner fixing portion 2422 spaced apart in a front-rear direction. The gas valve fixing portion 2421 is located near the front portion 10a, while the burner fixing portion 2422 is located near the rear portion 10b. The gas valve fixing portion 2421 has a generally rectangular shape. Three first fixing holes 24211 spaced apart from each other are provided on the gas valve fixing portion 2421. Each first fixing hole 24211 has a generally circular shape. The first fixing holes 24211 can mate with suitable fasteners (including but not limited to screws, bolts, etc.) to securely fix the gas valve 22 to the gas valve fixing portion 2421. Alternatively, the number of first fixing holes 24211 may be more or less than three. The burner mounting portion 2422 includes a first lug 24221 extending vertically from the top edge of the second vertical wall 2412 toward the third vertical wall 2413, and a second lug 24222 extending vertically from the top edge of the third vertical wall 2413 toward the second vertical wall 2412. The first lug 24221 and the second lug 24222 extend generally horizontally, such that they extend generally horizontally when the burner 23 is fixed to the burner mounting portion 2422. One second mounting hole 24223 is provided on the first lug 24221, and two spaced-apart second mounting holes 24223 are provided on the second lug 24222. Each second mounting hole 24223 has a generally circular shape and can be mated with a suitable fastener (including but not limited to screws, bolts, etc.) to securely fix the burner 23 to the burner mounting portion 2422. Understandably, the arrangement and number of the second fixing holes 24223 can be adjusted according to actual needs.

[0044] See also Figure 7The burner bracket 24's fixing flange 243 includes a first fixing flange 2431, a second fixing flange 2432, and a third fixing flange 2433. The first fixing flange 2431 extends vertically from the bottom edge of the first vertical wall 2411 towards the front portion 10a (based on...). Figure 2 The first fixed flange 2432 extends vertically to the left from the bottom edge of the second vertical wall 2412; the third fixed flange 2433 extends vertically to the right from the bottom edge of the third vertical wall 2413. Two screw holes 24311 spaced apart in the left-right direction are formed on the first fixed flange 2432. Each screw hole 24311 can be fitted with a suitable fastener (including but not limited to screws, bolts, etc.) to form a threaded connection between the burner bracket 24 and the base plate 12. The number of screw holes 24311 can also be set to three, four, or other suitable numbers.

[0045] See also Figure 7 In one or more embodiments, a generally rectangular through hole 24321 is provided on the second fixed flange 2432, and a snap-fit ​​element 24322 extending in a vertically downward direction is formed on the lateral edge of the through hole 24321 near the second vertical wall 2412. The through hole 24321 can be easily processed into the snap-fit ​​element 24322 by a stamping process, which facilitates manufacturing. Figure 8 yes Figure 7 The image shown is a partial enlarged view of section B of the gas-fired heating device of the present invention, after removing the gas pipe and combustion cylinder. (See attached image.) Figure 8 As shown, the snap-fit ​​component 24322 has a vertical surface 243221, an oblique surface 243222, and a transverse surface 243223. The vertical surface 243221 extends generally in a vertical direction and faces the rear portion 10b in the assembled state. Based on Figure 8 As shown, the inclined surface 243222 extends obliquely upward from the top of the vertical surface 243221 to the horizontal surface 243223. The horizontal surface 243223 extends approximately horizontally. This arrangement allows the snap-fit ​​element 24322 to be easily inserted into the corresponding snap-fit ​​hole (not shown) on the base plate 12, forming a snap-fit ​​engagement between the burner bracket 24 and the base plate 12. Alternatively, the third fixing flange 2433 is provided with the same through hole 24321 and snap-fit ​​element 24322 as the second fixing flange 2432, resulting in a more even force distribution when the burner bracket 24 is snapped into the base plate 12.

[0046] See also Figure 7In one or more embodiments, a generally tapered connector 24323 is formed at one end of the second fixing flange 2432 near the rear portion 10b (in the assembled state). The tapered connector 24323 is configured to insert into a insertion cavity (not shown) formed between the burner support 27 and the base plate 12 to further improve the stability of the fixation between the burner support 24 and the base plate 12. Alternatively, the third fixing flange 2433 is provided with the same tapered connector 24323 as the second fixing flange 2432. In one or more embodiments, a vertically upward extending limiting protrusion 243231 is also formed on the tapered connector 24323, such that when the tapered connector 24323 is inserted into the insertion cavity, the limiting protrusion 243231 can abut against the burner support 27 to enhance the firmness and stability of the insertion.

[0047] It should be noted that by setting the first fixing flange 2431 of the burner bracket 24 to form a threaded connection with the base plate 12, and setting the second fixing flange 2432 and the third fixing flange 2433 to form a snap-fit ​​connection with the base plate 12, the user can easily install and remove the burner bracket 24 from the front 10a of the cabinet 10, which facilitates the installation, disassembly, maintenance and replacement of the burner bracket 24 and components such as the gas valve 22, burner 23 and ignition needle 25 that are fixedly connected to the burner bracket 24.

[0048] Figure 4 This is a schematic diagram of an embodiment of the gas-fired heating device of the present invention, which removes the gas pipe and the combustion cylinder; Figure 5 This is an embodiment of the gas-fired heating device of the present invention that removes the gas pipe and combustion cylinder. Figure 4 The sectional view obtained by the AA section line shown. Figure 4 and Figure 5 As shown, in one or more embodiments, the burner 23 is fixed generally horizontally to the top 242 of the burner support 24. The burner 23 has opposing inlet end 23a and outlet end 23b. The inlet end 23a is close to the nozzle 221 of the gas valve 22. The outlet end 23b is away from the nozzle 221 of the gas valve 22 and positioned away from the top 242 to mate with the ignition end 252 on the ignition needle 25. In one or more embodiments, the burner 23 includes an upper housing 231 and a lower housing 232 that mate with each other to form a generally cylindrical gas guide chamber 233. With the above arrangement, the gas ejected from the nozzle 221 of the gas valve 22 can be injected in a generally horizontal direction within the gas guide chamber 233 to ensure a high combustion rate. In one or more embodiments, based on... Figure 5As shown, an arc-shaped cover 2311 protrudes upwards (in the assembled state, i.e., towards the ignition end 252 away from the ignition needle 25) on the gas outlet 23b. The arc-shaped cover 2311 helps to concentrate the gas near the gas outlet 23b, thereby increasing the gas density and improving the ignition success rate. In addition, the arc-shaped cover 2311 can also partially shield the ignition needle 25, preventing damage from collisions with other components, thus extending the service life of the ignition needle 25.

[0049] like Figure 5 As shown, in one or more embodiments, the ignition needle 25 has a fixed end 251 fixed inside the burner bracket 24 and an ignition end 252 located directly below the gas outlet end 23b of the burner 23. See also Figure 5 The ignition needle 25 is mostly located inside the burner support 24, allowing the burner support 24 to effectively protect the ignition needle 25. The ignition end 252 is positioned near and directly below the gas outlet end 23b, allowing the electric spark generated by the ignition end 252 to easily ignite the gas ejected from the gas outlet end 23b. Furthermore, the ignition needle 25 is communicatively connected to the control system of the garment care machine 1, enabling convenient control of the opening and closing of the ignition needle 25 through the control system. Figure 5 As shown, the ignition needle 25 is positioned to extend obliquely to the upper left (gradually approaching the burner 23) from the fixed end 251 toward the ignition end 252. This arrangement ensures that the central axis L1 of the ignition needle 25 and the central axis L2 of the burner 23 clamp together to form a predetermined acute angle α. In one or more embodiments, the predetermined acute angle α ranges from 18° to 30°. This prevents the angle from being too large, which would increase the height of the burner support 24 and occupy too much space, and also prevents the angle from being too small, which would reduce the probability of the electric spark generated at the ignition end 252 contacting the gas and affect the reliability of ignition.

[0050] See also Figure 4 and Figure 5 In one or more embodiments, the burner support 27 has a generally Z-shaped body 271. Specifically, the Z-shaped body 271 includes a transverse bottom wall 271 extending generally horizontally, a vertical connecting wall 2712 extending vertically upward from the side of the transverse bottom wall 271 away from the burner support 24, and a transverse top wall 2713 extending vertically from the top edge of the vertical connecting wall 2712 in a direction away from the burner support 24. A plurality of fixing holes (not shown) spaced apart in the left-right direction are formed in the transverse bottom wall 271. Each fixing hole can mate with a suitable fastener (including but not limited to screws, bolts, etc.) so that the burner support 27 is detachably fixed to the base plate 12. The number of fixing holes can be two, three, or other suitable numbers. Figure 6 yes Figure 4The image shown is a partial enlarged view of part A of the gas-fired heating device of the present invention, after removing the gas pipe and combustion cylinder. (See image.) Figure 6 As shown, in one or more embodiments, a vertically upward protruding insertion protrusion 27111 is also provided on the transverse bottom wall 2711. This insertion protrusion 27111, together with the bottom plate 12, forms an insertion cavity that can receive the corresponding tapered insertion connector 24323. A plurality of fixing holes (not shown in the figure) spaced apart in the left-right direction are also provided on the transverse top wall 2713. Each fixing hole is matched with a suitable fastener (including but not limited to screws, bolts, etc.) so that the combustion cylinder 26 can be firmly fixed to the combustion cylinder support 27. The number of fixing holes can be two, three, or other suitable numbers.

[0051] like Figure 3 As shown, in one or more embodiments, the combustion tube 26 is detachably fixed to the combustion tube spacer 27. The combustion tube 26 has opposing inlet end 261 and outlet end 262. The inlet end 261 has an inlet with a diameter of R1 (not shown in the figure), and the outlet end 262 has an outlet with a diameter of R2 (not shown in the figure), where R1 is greater than R2. Therefore, the combustion tube 26 forms a combustion chamber 263 with a longitudinal cross-section that gradually decreases from the inlet end 261 to the outlet end 262. Through the above arrangement, the combustion tube 26 can effectively utilize the heat generated after combustion of the gas, ensuring the heat utilization rate. In addition, the gas outlet end 23b of the burner 23 and the ignition end 252 of the ignition needle 25 are both arranged within the combustion chamber 263, which can ensure the safety of gas combustion. In one or more embodiments, a flame detector 28 is also provided on the outer wall of the combustion cylinder 26 near the ignition end 252 to detect the temperature of the ignition end 252. This allows the gas valve 22 to be opened only when the temperature of the ignition end 252 reaches a predetermined temperature threshold, further improving ignition safety. In one or more embodiments, an air distribution duct 29 is also provided around the outlet end 262 of the combustion cylinder 26 to supply the air required for gas combustion into the combustion chamber 263, ensuring complete combustion of the gas.

[0052] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A laundry care machine characterized in that, The laundry care machine comprises: a cabinet defining an accommodating cavity for placing laundry to be treated and a heating chamber spaced apart from the accommodating cavity; a gas heating device arranged in the heating chamber and configured to heat drying air for being delivered to the accommodating cavity to dry the laundry to be treated; the gas heating device comprises: a burner support; a burner horizontally fixed on a top of the burner support and having an air inlet end connectable with an external gas source and an air outlet end for ejecting gas, the air outlet end being positioned away from the top; and an ignition needle having a fixed end fixed inside the burner support and an ignition end located directly below the air outlet end and used for igniting the gas, and the ignition needle is positioned to extend obliquely from the fixed end to the ignition end towards a direction close to the burner; wherein the burner support has a U-shaped body extending vertically and open towards a rear of the cabinet, the top located above the U-shaped body, and a fixed flange extending vertically outward from a bottom edge of the U-shaped body, and the fixed flange forms a fixed connection with a bottom plate of the cabinet; wherein the fixed flange has a first flange close to a front of the cabinet, a second flange and a third flange extending from the front towards the rear respectively and opposite to each other, wherein the first flange forms a threaded connection with the bottom plate, and the second flange and the third flange form a clamping connection with the bottom plate.

2. The laundry care machine of claim 1, wherein, A through hole is provided on each of the second flange and the third flange, a clamping piece extending vertically downward is formed on one lateral edge of each of the through holes, and a clamping hole receiving the corresponding clamping piece is formed on the bottom plate.

3. The laundry care machine of claim 1, wherein, A tapered spigot towards the rear is formed on each of the second flange and the third flange, and a combustion cylinder support for mounting a combustion cylinder of the gas heating device is further provided on the bottom plate, and a spigot cavity allowing the corresponding tapered spigot to be inserted therein is formed between the combustion cylinder support and the bottom plate.

4. The laundry care machine of claim 3, wherein, A limiting protrusion extending vertically upward is formed on the tapered spigot.

5. The laundry care machine of claim 1, wherein, An arc-shaped cover protruding towards a direction away from the ignition end is formed on the air outlet end.

6. The laundry care machine of claim 1, wherein, A central axis of the ignition needle and a central axis of the burner hold a predetermined acute angle, and the predetermined acute angle ranges from 18° to 30°.

7. The laundry care machine of claim 1, wherein, The gas heating device further comprises: a gas pipe adapted to communicate with the external gas source; a gas valve fixed on the top and spaced apart from the burner, configured to communicate with the gas pipe and control on-off of the gas pipe, and a nozzle towards the air inlet end is further provided on the gas valve; and a combustion cylinder surrounding a combustion chamber allowing the gas to burn therein, and the air outlet end and the ignition end are located inside the combustion chamber.

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