Dryer and washing machine

Abstract

The invention discloses a dryer and a washing machine. The dryer comprises a shell, a thick film heating tube and a driving assembly. The shell is provided with an air inlet and an air outlet. And the thick film heating tube is arranged in the shell. The driving assembly is arranged in the shell and located on the side, close to the air inlet, of the thick film heating pipe and comprises a driving motor and a fan, the driving motor is located on the side, close to the air inlet, of the fan, and the driving end of the driving motor is connected with the fan. When clothes are dried, the thick-film heating pipe responds rapidly and emits heat rapidly and reaches the target temperature, the driving motor drives the fan to rotate, the fan extracts external gas through the air inlet, the gas is heated through the thick-film heating pipe and leaves through the air outlet, and the heated gas dries the clothes. The dryer adopts the thick-film heating tube, has the advantages of high efficiency, energy conservation, accurate temperature control, quick response and the like, and can perform low-temperature drying to prevent clothes from being damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of washing machines, and particularly to a dryer and a washing machine. Background Art

[0002] Traditional washing machine dryers mainly use resistance heating methods such as heating wires, heating tubes or PTCs to heat the air, and then use a fan to blow the hot air onto the clothes to dry the clothes. However, traditional resistance wire heating has a slow heating rate and large temperature fluctuations, resulting in the drying temperature often reaching above 70°C, which may damage the fiber structure of sensitive fabrics such as chemical fibers and wool on the clothes, causing the clothes to shrink, harden or fade. Moreover, this heating method has high energy consumption and low thermal efficiency. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems in the related art to some extent. For this purpose, the present invention provides a dryer and a washing machine.

[0004] In a first aspect, an embodiment of the present invention provides a dryer, which includes:

[0005] A housing having an air inlet and an air outlet;

[0006] A thick film heating tube disposed in the housing;

[0007] A driving assembly disposed in the housing. The driving assembly is located on the side of the thick film heating tube close to the air inlet. The driving assembly includes a driving motor and a fan. The driving motor is located on the side of the fan close to the air inlet, and the driving end of the driving motor is connected to the fan.

[0008] According to some embodiments of the present invention, the dryer further includes a mounting ring and a bracket. The mounting ring and the bracket are disposed in the housing. The bracket is located inside the mounting ring and fixedly connected to the mounting ring. The driving motor is fixedly connected to the bracket.

[0009] According to some embodiments of the present invention, a first lug extends from the inner side wall of the mounting ring towards the axis of the mounting ring. A plurality of the first lugs are circumferentially distributed along the mounting ring. The bracket is provided with a plurality of arms. The plurality of arms correspond to the plurality of first lugs one by one. The arm is attached to the first lug and fixedly connected to the first lug. The driving end of the driving motor passes through the bracket.

[0010] According to some embodiments of the present invention, the bracket includes a first bracket, a second bracket, and a first fixing bolt. The first bracket is located on the front side of the second bracket, the driving motor is located between the first bracket and the second bracket, and the first fixing bolt passes through the first bracket, the driving motor, and the second bracket at the same time, so that the first bracket, the second bracket, and the driving motor are relatively fixed.

[0011] According to some embodiments of the present invention, an annular convex portion is provided on the inner peripheral wall of the housing, and the front end surface of the mounting ring abuts against and fits with the rear end surface of the annular convex portion.

[0012] According to some embodiments of the present invention, the dryer further includes a mounting pipe. The mounting pipe is located inside the housing. The mounting pipe is fixedly connected to the bracket. The inner peripheral wall of the mounting pipe is provided with internal threads, and the outer peripheral wall of the thick film heating tube is provided with external threads. The rear end of the thick film heating tube is inserted into the mounting pipe and is threadedly connected to the mounting pipe. The fan is located inside the thick film heating tube.

[0013] According to some embodiments of the present invention, a second lug is formed on the inner peripheral wall of the mounting pipe extending towards the axis direction of the mounting pipe. A plurality of the second lugs are distributed circumferentially along the mounting pipe. The dryer further includes a plurality of second fixing bolts. The plurality of second fixing bolts, the plurality of second lugs, and the plurality of first lugs correspond one by one. The second fixing bolt passes through the first lug, the support arm, and the second lug at the same time to make the mounting pipe, the bracket, and the mounting ring relatively fixed.

[0014] According to some embodiments of the present invention, a plurality of heat exchange fins are provided on the inner peripheral wall of the thick film heating tube, and the plurality of heat exchange fins are distributed circumferentially along the thick film heating tube.

[0015] According to some embodiments of the present invention, a hollow tube is provided in the middle of the thick film heating tube, and at least part of the end of the heat exchange fin away from the inner peripheral wall of the thick film heating tube is connected to the outer peripheral wall of the hollow tube.

[0016] The dryer according to the embodiments of the present invention has at least the following technical effects:

[0017] 1. When drying is required, the thick film heating tube responds quickly and heats up rapidly to reach the target temperature. The driving motor drives the fan to rotate, so that the fan extracts external air through the air inlet. The air is heated by passing through the thick film heating tube and leaves through the air outlet. The heated air dries the clothes.

[0018] 2. The dryer uses a thick film heating tube, which has the advantages of high efficiency, energy saving, precise temperature control, and fast response, and can perform low-temperature drying to avoid damaging clothes.

[0019] In a second aspect, an embodiment of the present invention further provides a washing machine, including a dryer according to the embodiment of the first aspect of the present invention above.

[0020] The washing machine according to the embodiment of the present invention has at least the following technical effects: When the dryer is used in the washing machine and drying is required, the thick-film heating tube quickly responds and rapidly heats up to reach the target temperature. The driving motor drives the fan to rotate, so that the fan extracts external gas through the air inlet. The gas is heated by passing through the thick-film heating tube and leaves through the air outlet. The heated gas dries the clothes. The dryer adopts a thick-film heating tube, which has the advantages of high efficiency, energy saving, precise temperature control, and fast response, and can perform low-temperature drying to avoid damaging the clothes.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 is a schematic structural view of a dryer according to some embodiments of the present invention;

[0024] Figure 2 is an exploded view of a dryer according to some embodiments of the present invention;

[0025] Figure 3 is a cross-sectional view of a dryer according to some embodiments of the present invention.

[0026] Reference Numerals in the Drawings:

[0027] Housing 100; Air inlet 101; Air outlet 102; Annular protrusion 103;

[0028] Thick-film heating tube 200; Heat exchange fin 210; Hollow tube 220;

[0029] Driving assembly 300; Driving motor 310; Fan 320;

[0030] Mounting ring 400; First lug 410;

[0031] Bracket 500; Support arm 501; First frame 510; Second frame 520;

[0032] Mounting tube 600; Second lug 610. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as front and back, etc., which relate to the orientation description, is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present invention 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 limiting the present invention.

[0035] In the description of the present invention, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the recited number, and understandings such as "above", "below", "within", etc. include the recited number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0037] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0038] According to some embodiments of the present invention, referring to Figures 1 to 3 , the dryer includes a housing 100, a thick film heating tube 200, and a driving assembly 300. The housing 100 has an inner cavity. The housing 100 is provided with an air inlet 101 and an air outlet 102 that communicate with the inner cavity of the housing 100. The air inlet 101 is located on the front side of the housing 100, and the air outlet 102 is located on the rear side of the housing 100. The thick film heating tube 200 is disposed in the housing 100, and the axial direction of the thick film heating tube 200 is the front-rear direction. The driving assembly 300 is disposed in the housing 100, and the driving assembly 300 is located on the side of the thick film heating tube 200 close to the air inlet 101, that is, the driving assembly 300 is located behind the thick film heating tube 200. The driving assembly 300 includes a driving motor 310 and a fan 320. The driving motor 310 is located on the side of the fan 320 close to the air inlet 101, that is, the driving motor 310 is located behind the fan 320. The driving end of the driving motor 310 is connected to the fan 320.

[0039] When drying is required, the thick-film heating tube 200 responds quickly and heats up rapidly to reach the target temperature. The driving motor 310 drives the fan 320 to rotate, causing the fan 320 to draw in external air through the air inlet 101. The air passes through the thick-film heating tube 200, is heated, and then exits through the air outlet 102. The heated air is used to dry the clothes.

[0040] It can be understood that the thick-film heating tube 200 uses thick-film heating technology to form a heating layer by printing nano-scale conductive paste on a ceramic substrate. The following technical effects can be achieved:

[0041] 1. Precise temperature control and low-temperature clothing protection. The thick-film heating tube can achieve millimeter-level temperature monitoring through zone design, with the temperature difference controlled within plus or minus 2°C, and supports a low-temperature drying mode of 40°C to 60°C. For example, heat pump dryers can reduce clothing damage during drying, and combining thick-film technology can further shorten the low-temperature drying cycle through rapid response (second-level temperature rise), avoiding damage to fibers caused by long-term heat exposure.

[0042] 2. Improved thermal efficiency and energy conservation. The thick-film heating tube has a small thermal resistance, with a thermal conversion efficiency of over 98%, saving 30% - 50% more energy than traditional resistance wires. Moreover, its structure is compact, with a heating air duct formed inside the tube, reducing heat loss.

[0043] 3. Structural lightweight and reliability. The thickness of the heating coating of the thick-film heating tube is only 0.1mm to 0.5mm, occupying 70% less space than traditional electric heating tubes, facilitating the miniaturization of equipment. The ceramic substrate is corrosion-resistant and resistant to high-temperature impact, with a service life more than 3 times that of traditional resistance wires.

[0044] This dryer uses the thick-film heating tube 200, which has the advantages of high energy efficiency, precise temperature control, and rapid response, and can perform low-temperature drying to avoid damaging clothes.

[0045] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 , the dryer further includes a mounting ring 400 and a bracket 500. The mounting ring 400 and the bracket 500 are arranged inside the housing 100. The mounting ring 400 is coaxially arranged with the housing 100, and the outer peripheral wall of the mounting ring 400 is attached to the inner peripheral wall of the housing 100. The bracket 500 is located inside the mounting ring 400 and is fixedly connected to the mounting ring 400. The driving motor 310 is fixedly connected to the bracket 500.

[0046] Preferably, referring to Figure 2 and Figure 3, an inner sidewall of the mounting ring 400 extends towards the axis direction of the mounting ring 400 to form first lugs 410, and a plurality of first lugs 410 are circumferentially distributed along the mounting ring 400. The bracket 500 is provided with a plurality of support arms 501, and the plurality of support arms 501 correspond to the plurality of first lugs 410 one by one. The support arm 501 abuts against the first lug 410 and is fixedly connected to the first lug 410. A driving end of the driving motor 310 penetrates and is rotatably connected to the bracket 500, and the main body of the driving motor 310 is fixedly installed in the housing 100.

[0047] According to some embodiments of the present invention, referring to Figure 2 , the bracket 500 includes a first frame 510, a second frame 520 and a first fixing bolt. The first frame 510 is located on the front side of the second frame 520. The first frame 510 is provided with a plurality of support arms 501. The driving motor 310 is located between the first frame 510 and the second frame 520. The first fixing bolt simultaneously penetrates the first frame 510, the driving motor 310 and the second frame 520. The first fixing bolt relatively fixes the first frame 510, the second frame 520 and the driving motor 310, and the first frame 510 and the second frame 520 jointly clamp the main body of the driving motor 310.

[0048] According to some embodiments of the present invention, referring to Figure 3 , an inner peripheral wall of the housing 100 is provided with an annular protrusion 103. A front end surface of the mounting ring 400 abuts against and fits with a rear end surface of the annular protrusion 103. The annular protrusion 103 plays a role in limiting the mounting ring 400 to prevent the mounting ring 400 from moving forward continuously.

[0049] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 , the dryer further includes a mounting tube 600. The mounting tube 600 is located in the housing 100. The mounting tube 600 is fixedly connected to the bracket 500. An inner peripheral wall of the mounting tube 600 is provided with internal threads, and an outer peripheral wall of the thick film heating tube 200 is provided with external threads. A rear end of the thick film heating tube 200 is inserted into the mounting tube 600 and is threadedly connected to the mounting tube 600, so that the thick film heating tube 200 and the mounting tube 600 are relatively fixed. The fan 320 is located inside the thick film heating tube 200. It can be understood that when the fan 320 rotates, it can guide gas to pass through the inside of the thick film heating tube 200 and perform heat exchange with the thick film heating tube 200. The fan 320 located inside the thick film heating tube 200 can improve the heat exchange efficiency.

[0050] According to some embodiments of the present invention, referring to Figure 2, on the inner peripheral wall of the installation pipe 600, second lugs 610 are formed extending towards the axial direction of the installation pipe 600. A plurality of second lugs 610 are circumferentially distributed along the installation pipe 600. The dryer further includes a plurality of second fixing bolts. The plurality of second fixing bolts, the plurality of second lugs 610 and the plurality of first lugs 410 correspond to each other one by one. The second fixing bolts simultaneously pass through the first lugs 410, the support arm 501 and the second lugs 610 to relatively fix the installation pipe 600, the bracket 500 and the installation ring 400.

[0051] According to some embodiments of the present invention, a plurality of heat exchange fins 210 are provided on the inner peripheral wall of the thick film heating tube 200. The plurality of heat exchange fins 210 are circumferentially distributed along the thick film heating tube 200. Heating channels are formed between the heat exchange fins 210. The gas passes through the heating channels and exchanges heat with the heat exchange fins 210, so that the gas is heated. The heat exchange fins 210 can increase the heat exchange area between the gas and the thick film heating tube 200 and improve the heat exchange efficiency of the gas. The heat exchange fins 210 are arc-shaped and can guide the gas to form a spiral flow path along the circumferential direction. When the gas flows through the arc surface of the heat exchange fins 210, due to the difference in the radius of curvature, the flow velocity on the inner side is accelerated, a centrifugal force is generated on the outer side, a local pressure gradient is formed, and a longitudinal vortex structure is induced to generate. This vortex will periodically impact the mainstream boundary layer, break the laminar sublayer of the traditional smooth pipe wall, and enable the gas in the near-wall area with a higher thermal resistance to be efficiently mixed with the core area, significantly improving the convective heat transfer coefficient and ensuring that the gas can be fully and evenly heated.

[0052] According to some embodiments of the present invention, a hollow tube 220 is provided in the middle of the thick film heating tube 200. At least part of the ends of the heat exchange fins 210 away from the inner peripheral wall of the thick film heating tube 200 are connected to the outer peripheral wall of the hollow tube 220. It can be understood that the hollow tube 220 can be used as a built-in high-speed flow channel, which can guide the gas to flow axially at a high speed, and quickly export the heat generated by the thick film layer through forced convection. The connection between the hollow tube 220 and the heat exchange fins 210 is designed as a contraction-expansion type flow channel, and the cross-sectional mutation is used to induce the fluid to generate vortices, so that the gas can be fully mixed and evenly heated. Moreover, the hollow tube 220 can also be used as a rigid skeleton. Since the hollow tube 220 is connected to the heat exchange fins 210, when the thick film heating tube 200 bears external pressure, the heat exchange fins 210 transfer the force to the hollow tube 220, and the hollow tube 220 can play a role in sharing the pressure and avoid the risk of the thick film heating tube 200 being broken.

[0053] In the description of this specification, the description referring to the term "some embodiments" 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 invention. In this specification, the schematic expression of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dryer, characterized in that, Comprising: A housing (100) having an air inlet (101) and an air outlet (102); A thick film heating tube (200) disposed within the housing (100); A drive assembly (300) disposed within the housing (100), the drive assembly (300) being located on a side of the thick film heating tube (200) close to the air inlet (101), the drive assembly (300) including a drive motor (310) and a fan (320), the drive motor (310) being located on a side of the fan (320) close to the air inlet (101), and a drive end of the drive motor (310) being connected to the fan (320).

2. The dryer according to claim 1, characterized in that, The dryer further includes a mounting ring (400) and a bracket (500), the mounting ring (400) and the bracket (500) being disposed within the housing (100), the bracket (500) being located inside the mounting ring (400) and fixedly connected to the mounting ring (400), and the drive motor (310) being fixedly connected to the bracket (500).

3. The dryer according to claim 2, characterized in that, An inner sidewall of the mounting ring (400) extends towards the axis direction of the mounting ring (400) to form first lugs (410), a plurality of the first lugs (410) are circumferentially distributed along the mounting ring (400), the bracket (500) is provided with a plurality of support arms (501), the plurality of support arms (501) correspond to the plurality of first lugs (410) one by one, the support arms (501) are attached to the first lugs (410) and fixedly connected to the first lugs (410), and a drive end of the drive motor (310) passes through the bracket (500).

4. The dryer according to claim 3, characterized in that, The bracket (500) includes a first bracket (510), a second bracket (520) and a first fixing bolt, the first bracket (510) is located in front of the second bracket (520), the drive motor (310) is located between the first bracket (510) and the second bracket (520), and the first fixing bolt passes through the first bracket (510), the drive motor (310) and the second bracket (520) at the same time and makes the first bracket (510), the second bracket (520) and the drive motor (310) relatively fixed.

5. The dryer according to claim 2, characterized in that, An inner peripheral wall of the housing (100) is provided with an annular protrusion (103), and a front end face of the mounting ring (400) abuts against and fits with a rear end face of the annular protrusion (103).

6. The dryer according to claim 3, characterized in that, The dryer further includes a mounting tube (600), the mounting tube (600) is located within the housing (100), the mounting tube (600) is fixedly connected to the bracket (500), an inner peripheral wall of the mounting tube (600) is provided with internal threads, an outer peripheral wall of the thick film heating tube (200) is provided with external threads, a rear end of the thick film heating tube (200) is inserted into the mounting tube (600) and is threadedly connected to the mounting tube (600), and the fan (320) is located within the thick film heating tube (200).

7. The dryer according to claim 6, characterized in that, The inner peripheral wall of the installation pipe (600) extends towards the axial direction of the installation pipe (600) to form second lugs (610), and a plurality of the second lugs (610) are circumferentially distributed along the installation pipe (600). The dryer further includes a plurality of second fixing bolts. The plurality of second fixing bolts, the plurality of the second lugs (610) and the plurality of the first lugs (410) correspond to each other one by one. The second fixing bolts penetrate through the first lugs (410), the support arms (501) and the second lugs (610) at the same time to relatively fix the installation pipe (600), the bracket (500) and the installation ring (400).

8. The dryer according to claim 1, wherein, A plurality of heat exchange fins (210) are provided on the inner peripheral wall of the thick film heating tube (200), and the plurality of heat exchange fins (210) are circumferentially distributed along the thick film heating tube (200).

9. The dryer according to claim 8, characterized in that, A hollow tube (220) is provided in the middle of the thick film heating tube (200), and one end of at least part of the heat exchange fins (210) away from the inner peripheral wall of the thick film heating tube (200) is connected to the outer peripheral wall of the hollow tube (220).

10. A washing machine, characterized in that, It includes a dryer according to any one of claims 1 to 9.

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