Drying channel for roller washing machine and roller washing machine

Abstract

The drying channel for the roller washing machine comprises a first cover and a second cover, the first cover is an SMC / BMC material forming piece, the second cover is an SMC / BMC material forming piece, the second cover and the first cover are sealed and covered in a matched mode to form an air channel cavity, and the air channel cavity is provided with an air inlet and an air outlet. The inner surface of the second cover and the inner surface of the first cover are smooth surfaces and are directly exposed out of the air duct cavity. The drying channel for the roller washing machine is high in rigidity, easy to produce, low in cost, clean, sanitary, high in safety and high in drying efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of washing machines, and particularly relates to a drying channel for a drum washing machine and a drum washing machine. Background Technique

[0002] The existing drying channels for drum washing machines mainly include aluminum alloy drying channels and sheet metal drying channels.

[0003] The aluminum alloy drying channel uses the characteristics of good heat resistance of aluminum alloy and relatively complex forming structure, and is widely used in the washing and drying integrated machines of drum washing machines. The upper cover and the lower cover of the drying channel are respectively formed by aluminum die-casting, and then assembled into a drying channel assembly. The advantages of the aluminum alloy drying channel are as follows: ① The production process is mature, and the aluminum alloy material has good heat resistance, which can meet the use conditions of high-temperature heating of the drying channel; ② Aluminum alloy will not burn, and there is no problem in terms of safety. The disadvantages of the aluminum alloy drying channel are as follows: ① Aluminum alloy is prone to rust in high-temperature and high-humidity environments, especially in the high-temperature, humid and detergent environment during the washing and drying work of the washing machine, generating white powder (aluminum trioxide). After long-term use, the white powder will fall off, polluting clothes and causing health problems; ② The aluminum alloy has good heat conduction effect, resulting in the heat of the drying heating element in the drying channel being quickly conducted to the outer tub of the washing machine. Although the aluminum alloy has good heat resistance and does not burn, when there is an abnormal high temperature in the drying channel, such as a power failure during clothes drying, resulting in the fan stopping, but the temperature of the heating element will instantaneously overshoot to a very high temperature. At this time, the screw posts for fixing the drying channel on the outer tub will melt due to the high temperature conducted by the drying channel, resulting in the risk of loosening and falling off of the drying channel during the subsequent dehydration of the washing machine, and the safety is poor; ③ The aluminum alloy drying channel has fast heat conduction, and the high temperature generated when the drying channel heating element works is quickly dissipated through the drying channel, resulting in large heat loss and low drying efficiency of the entire drying channel; ④ The cost of aluminum alloy materials and processing fees is relatively high. ⑤ The surface of the aluminum alloy channel is relatively rough and is prone to attaching lint, resulting in blockage.

[0004] The upper and lower covers of the sheet metal drying channel are stamped from galvanized sheet or stainless steel materials. The fan connection part requires a separate fan cover made of plastic material to fixedly install the fan. The air outlet structure is relatively complex and also needs to be made of separate plastic material, and then assembled together to form a drying channel assembly. The advantages of the sheet metal drying channel are as follows: ① The cost is relatively lower than that of the aluminum alloy solution; ② The stainless steel drying channel can solve the problem of rust in the drying channel. The disadvantages of the sheet metal drying channel are as follows: ① The number of parts is too large, the assembly is relatively complex, and it is difficult to control during mass production; ② For the drying channel with galvanized sheet + electrophoretic treatment, rust problems will still occur; ③ Similar to the aluminum alloy drying channel, the sheet metal drying channel has good heat conduction. In case of abnormal conditions, it will conduct high temperature to the screw posts for fixing the drying channel on the outer barrel of the washing machine, and the screw posts will melt due to the high temperature conducted by the drying channel, resulting in risks such as loosening and falling off of the drying channel during subsequent dehydration of the washing machine, and the safety is poor. ④ The sheet metal drying channel has fast heat conduction. When the heating element in the drying channel works, the generated high temperature quickly dissipates through the drying channel, resulting in large heat loss and low drying efficiency of the entire drying channel. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the present invention is to provide a drying channel for a drum washing machine, which has strong rigidity, simple production, low cost, cleanliness, high safety, and high drying efficiency.

[0006] The drying channel for a drum washing machine according to an embodiment of the present invention includes:

[0007] A first cover, which is a molded part made of SMC / BMC material,

[0008] A second cover, which is a molded part made of SMC / BMC material. The second cover is hermetically covered with the first cover in a matching manner to form an air duct cavity. The inner surfaces of the second cover and the first cover are smooth surfaces and are directly exposed to the air duct cavity.

[0009] Since the first cover is a molded part made of SMC / BMC material and the second cover is a molded part made of SMC / BMC material, and the inner surface of the air cavity channel is a smooth surface, the drying channel for a drum washing machine according to the embodiment of the present invention has the advantages of strong rigidity, simple production, low cost, cleanliness, high safety, and high drying efficiency.

[0010] In some embodiments, the main body wall thickness of the first cover ≥ 1.5 mm, and the main body wall thickness of the second cover ≥ 1.5 mm.

[0011] In some embodiments, the first cover is a compression molded part or an injection molded part; the second cover is a compression molded part or an injection molded part.

[0012] In some embodiments, the first cover is an integrally formed part or is assembled by splicing a plurality of independently formed parts, and the second cover is an integrally formed part or is assembled by splicing a plurality of independently formed parts.

[0013] In some embodiments, a seal is further included, and the first cover and the second cover are sealed by the seal.

[0014] In some embodiments, a first sealing surface is provided at the edge of the first cover, a second sealing surface is provided at the edge of the second cover, a sealing groove is provided at the edge of the first cover or the second cover, and the seal is embedded in the sealing groove and is in close contact with the first sealing surface and the second sealing surface.

[0015] In some embodiments, a first connecting portion is formed on the first cover, a second connecting portion is formed on the second cover, and the first connecting portion and the second connecting portion are used to fixedly connect the first cover and the second cover; an installation portion for installing the drying channel for the drum washing machine on the cabinet or the outer tub of the drum washing machine is formed on the first cover or / and the second cover.

[0016] In some embodiments, a heat insulation plate is further included, and the heat insulation plate is disposed between the heating element in the air duct cavity and the first cover or between the heating element in the air duct cavity and the second cover.

[0017] In some embodiments, the heat insulation plate is a stainless steel heat insulation plate.

[0018] The present utility model further provides a drum washing machine.

[0019] The drum washing machine according to the embodiment of the present utility model includes the drying channel for the drum washing machine according to any one of the embodiments of the present utility model.

[0020] Since the drum washing machine according to the embodiment of the present utility model adopts the drying channel for the drum washing machine according to the embodiment of the present utility model, it has the same advantages as the drying channel for the drum washing machine according to the embodiment of the present utility model, which will not be elaborated herein.

[0021] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0023] Figure 1Front schematic view of the drying channel for a drum washing machine according to an embodiment of the present utility model;

[0024] Figure 2 Three-dimensional schematic view of the drying channel for a drum washing machine according to an embodiment of the present utility model;

[0025] Figure 3 Internal structure schematic view of the drying channel for a drum washing machine according to an embodiment of the present utility model.

[0026] Reference numerals:

[0027] Drying channel 1000 for a drum washing machine; First cover 1; Fan cover part 101; First heating part 102; First air outlet part 103; First connecting part 104; Second cover 2; Fan cavity part 201; Second heating part 202; Second air outlet part 203; Second connecting part 204; Sealing groove I; Mounting part II; Fan 3; Heating element 4; Temperature protection switch 5; Temperature sensor 6. Detailed implementation manners

[0028] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0029] The following combines Figures 1 to 3 to describe the drying channel 1000 for a drum washing machine and the drum washing machine according to an embodiment of the present utility model.

[0030] As Figures 1 to 3 shown, the drying channel 1000 for a drum washing machine according to an embodiment of the present utility model includes a first cover 1 and a second cover 2. The first cover 1 is a molded part made of SMC / BMC material, and the second cover 2 is a molded part made of SMC / BMC material. The second cover 2 is hermetically covered with the first cover 1 in a matching manner to form an air duct cavity. The inner surfaces of the second cover 2 and the first cover 1 are smooth surfaces and are directly exposed to the air duct cavity.

[0031] It can be understood that both the first cover 1 and the second cover 2 are molded parts made of SMC / BMC material, that is, both the first cover 1 and the second cover 2 are made of SMC / BMC material. SMC / BMC material is a thermosetting resin composite material, that is, bulk molding compound, which has advantages such as strong rigidity, corrosion resistance, high temperature resistance, and good flame retardancy.

[0032] The first cover 1 and the second cover 2 are hermetically sealed and fitted together so that a closed air duct cavity is formed between the first cover 1 and the second cover 2. The air duct cavity may include a fan installation area, a heating element installation area, and an air outlet area that are connected in sequence; specifically, the first cover 1 includes a fan cover portion 101, a first heating portion 102, and a first air outlet portion 103 that are connected in sequence, and the second cover 2 includes a fan cavity portion 201, a second heating portion 202, and a second air outlet portion 203 that are connected in sequence. The fan cover portion 101 and the fan cavity portion 201 are correspondingly matched to form the fan installation area, the first heating portion 102 and the second heating portion 202 are correspondingly matched to form the heating element installation area, and the first air outlet portion 103 and the second air outlet portion 203 are matched to form the air outlet. The fan installation area is used to accommodate the fan 3, the heating element installation area is used to accommodate the heating element 4, and the air outlet is used to send out hot air. The fan 3 generates wind, so that the wind is heated by the heating element 4 in the heating element installation area and then becomes hot air, and the hot air is sent out through the air outlet to dry the clothes in the drum washing machine.

[0033] Both the first cover 1 and the second cover 2 are made of SMC / BMC material. Since the SMC / BMC material has strong rigidity and high temperature resistance, the first cover 1 and the second cover 2 have strong rigidity, stable dimensions and high temperature resistance, and can meet the use requirements of the drying channel for rigidity, strength performance and high temperature resistance.

[0034] Both the first cover 1 and the second cover 2 are made of SMC / BMC material. The material cost is low, and it can be obtained by compression molding or injection molding. It can be produced automatically, the production is simple, and the processing cost is low, which reduces the cost of the drying channel 1000 for the drum washing machine and has great advantages in mass production.

[0035] Both the first cover 1 and the second cover 2 are made of SMC / BMC material. The inner surface of the second cover 2 and the inner surface of the first cover 1 are directly exposed to the air duct cavity. Since the SMC / BMC material has good corrosion resistance, the first cover 1 and the second cover 2 will not react with the high-temperature and high-humidity steam containing detergent and will not corrode. At the same time, the wall surface of the air duct cavity (that is, the inner surfaces of the first cover 1 and the second cover 2) is smooth and will not adhere to lint; thus, the drying channel 1000 for the drum washing machine in this embodiment is clean and hygienic, is beneficial to human health, and can support long-term use.

[0036] Both the first cover 1 and the second cover 2 are made of SMC / BMC material, which can effectively block the heat conduction from the drying channel 1000 of the drum washing machine in this embodiment to the outer tub. Even when there is a sudden abnormal power failure resulting in an overshoot of the temperature of the drying heating element 4, the heat transferred from the drying channel 1000 of the drum washing machine in this embodiment to the outer tub is small and the temperature is low, and it will not cause melting at the connection with the outer tub. Therefore, there is no risk of loosening or falling off in the connection between the drying channel 1000 of the drum washing machine in this embodiment and the outer tub. The connection between the drying channel 1000 of the drum washing machine in this embodiment and the outer tub is stable and reliable, and is not affected by the high temperature inside the drying channel; and the SMC / BMC material is heat-resistant and has good flame retardancy. Therefore, the first cover 1 and the second cover 2 themselves will not soften and deform and are not easily combustible; thus, the drying channel 1000 of the drum washing machine in this embodiment is safe and reliable.

[0037] Both the first cover 1 and the second cover 2 are made of SMC / BMC material and are hermetically connected between the first cover 1 and the second cover 2. The first cover 1 and the second cover 2 have a good heat preservation effect, which can effectively reduce the heat loss inside the drying channel 1000 of the drum washing machine in this embodiment, improve the heat utilization efficiency, and improve the drying performance of the drum washing machine. Therefore, the drying efficiency of the drying channel 1000 of the drum washing machine in this embodiment is high.

[0038] In summary, the drying channel 1000 of the drum washing machine in the embodiment of the present utility model has the advantages of strong rigidity, simple production, low cost, cleanliness, high safety, high drying efficiency, etc.

[0039] In some embodiments, as Figure 2 and Figure 3 shown, a temperature protection switch 5 is installed between the first cover 1 and the second cover 2. The temperature protection switch 5 is used to control the maximum temperature of the drying channel 1000 of the drum washing machine. When an abnormal high temperature appears in the air duct cavity, the temperature protection switch 5 will disconnect, and the heating element 4 will be powered off and stop heating. By setting the temperature protection switch 5, the safety of the drying channel 1000 of the drum washing machine is further improved.

[0040] In some embodiments, as Figure 2 and Figure 3 shown, a temperature sensor 6 is installed between the first cover 1 and the second cover 2. The temperature sensor 6 is used to control the temperature of the hot air at the air outlet position. When different temperatures need to be adjusted during drying, it is detected and controlled by the temperature sensor 6.

[0041] In some embodiments, the main body wall thickness of the first cover 1 ≥ 1.5 mm, and the main body wall thickness of the second cover 2 ≥ 1.5 mm. That is to say, the thinnest parts of the main body wall thickness of the first cover 1 and the second cover 2 are not less than 1.5 mm, which can ensure that the strength performance and rigidity of the first cover 1 and the second cover 2 meet the use requirements.

[0042] In some embodiments, the first cover 1 is a compression molded part or an injection molded part, that is, the first cover 1 is made by an injection molding or compression molding method. The processing is simple, the cost is low, and the processing dimensional accuracy is high, the dimensions are stable, the dimensional consistency is good, and it can be mass-produced; the second cover 2 is a compression molded part or an injection molded part, that is, the second cover 2 is made by an injection molding or compression molding method. The processing is simple, the cost is low, and the processing dimensional accuracy is high, the dimensions are stable, the dimensional consistency is good, and it can be mass-produced.

[0043] In some embodiments, the first cover 1 is an integrally formed part or is formed by splicing a plurality of independently formed parts. For example, the blower cover part 101, the first heating part 102, and the first air outlet part 103 of the first cover 1 are independently formed, and after independent forming, the blower cover part 101, the first heating part 102, and the first air outlet part 103 are sequentially spliced to form the first cover 1. The processing is simple and the processing cost is low; the second cover 2 is an integrally formed part or is formed by splicing a plurality of independently formed parts. For example, the blower cavity part 201, the second heating part 202, and the second air outlet part 203 of the second cover 2 are independently formed, and after independent forming, the blower cavity part 201, the second heating part 202, and the second air outlet part 203 are sequentially spliced to form the second cover 2. The processing is simple and the processing cost is low.

[0044] In some embodiments, a seal (not shown in the figure) is further included. The first cover 1 and the second cover 2 are sealed by the seal, which ensures the sealing effect of the air duct cavity, ensures that the air in the air duct cavity will not leak, is beneficial to improving the drying efficiency of the drying channel 1000 for the drum washing machine in this embodiment, and is beneficial to improving the safety of the drying channel 1000 for the drum washing machine in this embodiment.

[0045] In some embodiments, a first sealing surface is provided at the edge of the first cover 1, a second sealing surface is provided at the edge of the second cover 2, and a sealing groove I is provided at the edge of the first cover 1 or the second cover 2. The seal is embedded in the sealing groove I and is in close contact with the first sealing surface and the second sealing surface. The seal between the first cover 1 and the second cover 2 is reliable, which ensures the sealing effect of the air duct cavity, ensures that the air in the air duct cavity will not leak, is beneficial to improving the drying efficiency of the drying channel 1000 for the drum washing machine in this embodiment, and is beneficial to improving the safety of the drying channel 1000 for the drum washing machine in this embodiment.

[0046] In some embodiments, a first connecting portion 104 is formed on the first cover 1, a second connecting portion 204 is formed on the second cover 2, and the first connecting portion 104 and the second connecting portion 204 are used to fixedly connect the first cover 1 and the second cover 2. An installation portion II for installing the drying channel 1000 for the drum washing machine on the cabinet or outer cylinder of the drum washing machine is formed on the first cover 1 or / and the second cover 2.

[0047] In some embodiments, a heat insulation plate (not shown in the figure) is further included, and the heat insulation plate is disposed between the heating element 4 located in the air duct cavity and the first cover 1 or between the heating element 4 located in the air duct cavity and the second cover 2. It can be understood that the first cover 1 and the second cover 2 are made of SMC / BMC material, and the heat resistance performance can meet the usage requirements. When there is a higher heat resistance requirement, according to the actual situation, by adding a heat insulation plate between the heating element 4 located in the air duct cavity and the first cover 1 or between the heating element 4 located in the air duct cavity and the second cover 2, the heat insulation effect can be further improved.

[0048] In some embodiments, the heat insulation plate is a stainless steel heat insulation plate. On the one hand, the stainless steel heat insulation plate will not rust in the humid and high-temperature gas environment in the air duct cavity. On the other hand, it has a good effect of reflecting heat radiation.

[0049] The present utility model also provides a drum washing machine.

[0050] The drum washing machine according to an embodiment of the present utility model includes the drying channel 1000 for a drum washing machine according to any one of the embodiments of the present utility model.

[0051] Since the drum washing machine according to the embodiment of the present utility model adopts the drying channel 1000 for a drum washing machine according to the embodiment of the present utility model, it has the same advantages as the drying channel 1000 for a drum washing machine according to the embodiment of the present utility model, and will not be repeated here.

[0052] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] Although the embodiments of the present utility model 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 spirits of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A drying channel for a drum washing machine, characterized in that: include: A first cover, wherein the first cover is a SMC / BMC material molded part; The second cover is a SMC / BMC material molded part, and the second cover is adaptively sealed and covered with the first cover to form an air duct cavity. The inner surface of the second cover and the inner surface of the first cover are smooth surfaces and are directly exposed to the air duct cavity.

2. The drying channel for a drum washing machine according to claim 1, characterized in that: The main body wall thickness of the first cover is ≥1.5 mm, and the main body wall thickness of the second cover is ≥1.5 mm.

3. The drying channel for a drum washing machine according to claim 1, characterized in that: The first cover is a compression molded part or an injection molded part; the second cover is a compression molded part or an injection molded part.

4. The drying channel for a drum washing machine according to claim 1, characterized in that: The first cover is an integrally formed part or is formed by splicing a plurality of independent formed parts, and the second cover is an integrally formed part or is formed by splicing a plurality of independent formed parts.

5. The drying channel for a drum washing machine according to claim 1, characterized in that: A sealing member is also included, and the first cover and the second cover are sealed by the sealing member.

6. The drying channel for a drum washing machine according to claim 5, characterized in that: A first sealing surface is provided at the edge of the first cover, a second sealing surface is provided at the edge of the second cover, a sealing groove is provided at the edge of the first cover or the second cover, and the sealing member is embedded in the sealing groove and in close contact with the first sealing surface and the second sealing surface.

7. The drying channel for a drum washing machine according to claim 1, characterized in that: A first connecting portion is formed on the first cover, and a second connecting portion is formed on the second cover. The first connecting portion and the second connecting portion are used to fixedly connect the first cover and the second cover; a mounting portion for mounting the drying channel of the drum washing machine on the casing or outer drum of the drum washing machine is formed on the first cover and / or the second cover.

8. The drying channel for a drum washing machine according to claim 1, characterized in that: It also includes a heat insulation board, which is arranged between the heating element located in the air duct cavity and the first cover or between the heating element located in the air duct cavity and the second cover.

9. The drying channel for a drum washing machine according to claim 8, characterized in that , the insulation board is a stainless steel insulation board.

10. A drum washing machine, characterized in that: It comprises a drying channel for a drum washing machine as claimed in any one of claims 1 to 9.

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