A hair dryer that is comfortable to use

Abstract

The present application relates to the field of household appliances, in particular to a comfortable electric hair dryer, in order to solve the problem of hair dryness and dryness after drying, the electric hair dryer comprises a shell assembly with a shell, a handle assembly connected with the shell; the electric hair dryer further comprises a fan unit and a heating unit arranged in the shell, the fan unit is used for sucking air flow into the shell from the air inlet of the electric hair dryer; wherein, the heating unit comprises a heat insulation piece with a hollow channel, an inner cylinder is further arranged in the shell, the electric hair dryer comprises a first cold air flow passage through the cold air flow defined by the shell and the inner cylinder, a second cold air flow passage through the cold air flow defined by the heat insulation piece, and a hot air flow passage defined by the inner cylinder and the heat insulation piece, the air flow in the shell passes through the first cold air flow passage, the hot air flow passage and the second cold air flow passage respectively, and is blown out by the respective air outlets. The water moisture and luster of the hair can be ensured while drying the hair.

Description

Technical Field

[0001] The present invention relates to the field of household appliances, in particular to a hair dryer which is comfortable to use. Background Art

[0002] Existing hair dryers generally include a fan unit and a heating unit arranged inside a shell. The rear end of the shell is provided with an air inlet and the front end is provided with an air outlet. The fan unit is used to draw air from the air inlet into the shell and blow it out from the air outlet, and the heating unit is used to heat the air.

[0003] In a prior art, in order to solve the problem of the outer shell being too hot, the middle of the air outlet is provided with uniform hot air, and a ring of cold air is provided around the outer edge, which is beneficial for styling hair and reducing damage to hair.

[0004] In another prior art, the heating unit includes an insulating component with a liquid supply pipe provided inside the insulating component. Part of the airflow generated by the fan unit passes through the inner side of the insulating component, and the inner side of the hot air is cold air. The purpose is to dissipate heat for the liquid supply pipe provided in the insulating component and prevent the internal liquid from leaking from the liquid supply pipe due to the expansion of the liquid caused by the increase in temperature of the hot air.

[0005] In actual use of hair dryers, hair tends to become frizzy and the scalp dry after drying, especially for short hair. After drying, the ends of the hair turn outwards, and a curling iron or a straightening iron is needed to style the hair to achieve the desired effect. One way to solve this problem is to add a negative ion module or a water ion module to the hair dryer. This method increases the complexity of the control circuit and increases the cost. In addition, when hot air is blown out from the air outlet, the outlet temperature will increase significantly. Generally, a hair dryer and a nozzle are used together to increase or decrease the wind speed and style the hair. Existing hair dryers with a combination of hot and cold air paths cannot effectively reduce the temperature of the connection between the nozzle and the hair dryer. After use, the connection between the nozzle and the hair dryer is hot to the touch, making it inconvenient for users to store it. Summary of the Invention

[0006] In order to solve the above problems, the present invention provides a hair dryer that is comfortable to use.

[0007] The technical solution of the present invention is:

[0008] A hair dryer that is comfortable to use, comprising a housing assembly having a housing, and a handle assembly connected to the housing;

[0009] The hair dryer further comprises a fan unit and a heating unit disposed in the housing, wherein the fan unit is configured to draw air from an air inlet of the hair dryer into the interior of the housing;

[0010] In which, the heating unit includes a heat-insulating part with a hollow channel, and an inner cylinder is also provided in the outer shell. The hair dryer includes a first cold air flow path through which the cold air flow passes, which is defined by the outer shell and the inner cylinder, a second cold air flow path through which the cold air flow passes, which is defined by the heat-insulating part, and a hot air flow path defined by the inner cylinder and the heat-insulating part. The air flow inside the outer shell passes through the first cold air flow path, the hot air flow path, and the second cold air flow path and is blown out from their respective air outlets.

[0011] Preferably, the cold airflow in the first cold airflow passage and / or the second cold airflow passage is mixed into the hot airflow passage at an air outlet close to the hot airflow passage.

[0012] Preferably, the airflow sucked by the fan unit enters the hot airflow path and the second cold airflow path respectively, the second cold airflow path includes a second inlet, the heating unit includes a heating wire, and the second inlet is located upstream of the heating wire.

[0013] Preferably, the fan unit is arranged inside the shell, and the air inlet is arranged at the rear end of the shell. The air flow sucked into the shell by the fan unit enters the first cold air flow path, the second cold air flow path, and the hot air flow path respectively.

[0014] Preferably, the first cold air flow passage includes a first inlet, and the first inlet is located upstream of the heating wire.

[0015] Preferably, the first inlet is located downstream of the second inlet.

[0016] Preferably, the fan unit is arranged in the handle assembly, the air inlet is arranged on the handle assembly, the heating unit is arranged in the inner tube and the rear end of the inner tube is sealed, and the rear end of the outer shell is also provided with a first air inlet, and the air flow enters the first cold air flow path from the first air inlet.

[0017] Preferably, the hair dryer further comprises a first fan unit disposed in the first cold air flow passage for drawing air from the first air inlet into the first cold air flow passage, the first fan unit being located upstream of the fan unit;

[0018] Alternatively, the air flow in the first cold air flow passage is driven by the air flow blown out from the hot air flow passage and / or the second cold air flow passage to draw the air flow outside the hair dryer into it from the first air inlet.

[0019] Preferably, the hair dryer further comprises an electronic device, and the electronic device is arranged in the first cold air flow passage and / or the second cold air flow passage.

[0020] Preferably, the air outlet of the first cold air flow passage is a first outlet, the outer shell includes a cylindrical outer wall and an inner wall connected to the cylindrical outer wall, the inner wall and the outer wall are connected by ribs, and the first outlet is defined by the inner wall and the outer wall.

[0021] The beneficial effects of the present invention are:

[0022] 1. The arrangement of the first cold air flow passage, the hot air flow passage, and the second cold air flow passage has the advantage that the temperature at the air outlet can be effectively reduced by the arrangement of the three air ducts, so that when the hair dryer is used in conjunction with other accessories, such as a nozzle, a diffuser, etc., the temperature rise at the connection is low, and the user can remove and store them in time after use, which can prevent the connection between the accessories and the hair dryer from being deformed due to high temperature, making the connection more reliable; moreover, the air flow obtained from the air outlet has a lower temperature than that of the prior art, which can ensure the moisture and gloss of the hair while drying the hair, and prevent the hair from being frizzy and dry; by making the hot air flow passage between the first cold air flow passage and the second cold air flow passage, the cold air flows in the two cold air flow passages can take away the temperature rise caused by the heat radiation of the heating unit, thereby preventing the heating wire of the heating unit from turning red, and making it safer to use.

[0023] 2. By mixing the cold airflow with the hot airflow, the temperature of the hot airflow is lowered, preventing hair from becoming dry and frizzy due to overheating. This is especially useful in summer when the room temperature is high and you want to dry your hair quickly but don't want to use the cold airflow directly.

[0024] 3. By locating the second inlet upstream of the heating wire of the heating unit, the advantage is that it ensures that the airflow entering the second cold air flow path is a cold airflow that has not been heated by the heating wire; the airflow in the hot air flow path and the cold air flow path is the same airflow, so that a larger amount of cold air passes through the second cold air flow path, effectively reducing the air temperature while reducing the air volume loss.

[0025] 4. By making the airflows entering the first cold airflow passage, the second cold airflow passage, and the hot airflow passage all formed by the fan unit, the advantage is that it can be achieved through the setting of the inner cylinder and the heat insulation component, thereby reducing the complexity of the product structure and reducing costs.

[0026] 5. By locating the first inlet of the first cold air flow passage upstream of the heating wire, the benefit is to ensure that the air flow entering the first cold air flow passage is cold air flow.

[0027] 6. By locating the first inlet downstream of the second inlet, the advantages are that on the one hand, it is easier to fix the fan unit and reduce the volume of the hair dryer; on the other hand, it reduces the air volume loss caused by the air flow being diverted into each air flow path.

[0028] 7. By arranging the fan unit in the handle assembly and providing the first air inlet, the first cold air flow path and the airflow sucked into the hot air flow path and the second cold air flow path by the fan unit are independent, thereby increasing the air volume.

[0029] 8. By setting the first fan unit, the air volume and wind speed in the first cold air flow passage are increased, thereby taking away the heat on the surface of the inner cylinder in time and preventing the outer shell from getting hot.

[0030] By making the airflow in the first cold airflow passage a passive airflow, the cost is reduced and the internal structure of the hair dryer is simplified.

[0031] 9. By arranging the electronic components in the first cold air flow path and / or the second cold air flow path, the cold air flow can dissipate heat from the electronic components, thereby extending the service life of the electronic components.

[0032] 10. The first outlet is arranged on the outer shell, which has the advantage of simplifying the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of the hair dryer in the first embodiment of the present invention.

[0034] Figure 2 This is a cross-sectional view of the housing assembly in the first embodiment of the present invention.

[0035] Figure 3 Schematic diagram of the structure of each air flow outlet in the first embodiment of the present invention.

[0036] Figure 4 This is a schematic structural diagram of the housing in the first embodiment of the present invention.

[0037] Figure 5 This is a cross-sectional view of the hair dryer in the second embodiment of the present invention.

[0038] Figure 6 This is another cross-sectional view of the hair dryer in the second embodiment of the present invention.

[0039] The names of the components in the figure are as follows:

[0040] 1. Housing assembly; 101. Housing; 2. Handle assembly; 3. Fan unit; 301. Motor; 302. Fan blades; 303. Fixed bracket; 4. Heating unit; 401. Thermal insulation; 5. Air inlet; 6. First cold air flow path; 601. First inlet; 602. First outlet; 7. Second cold air flow path; 701. Second inlet; 702. Second outlet; 703. Third outlet; 8. Hot air flow path; 801. Air flow inlet; 802. Air flow outlet; 19. Inner cylinder; 10. First air inlet; 11. Inner wall; 12. Ribs; 13. First fan unit. DETAILED DESCRIPTION

[0041] The present invention will be described in detail below with reference to the accompanying drawings.

[0042] Example 1:

[0043] As shown in the accompanying drawings, a comfortable electric hair dryer comprises a housing assembly 1 having a housing 101, a handle assembly 2 connected with the housing 101; Figures 1 to 4

[0044] The electric hair dryer further comprises a fan unit 3 for sucking air flow into the housing 101 from an air inlet 5 of the electric hair dryer and a heating unit 4 arranged in the housing 101.

[0045] The heating unit 4 comprises a heat insulation member 401 having a hollow channel, and the housing 101 further comprises an inner cylinder 19. The electric hair dryer comprises a first cold air flow passage 6 for passing cold air flow, which is defined by the housing 101 and the inner cylinder 19, a second cold air flow passage 7 for passing cold air flow, which is defined by the heat insulation member 401, and a hot air flow passage 8, which is defined by the inner cylinder 19 and the heat insulation member 401. The air flow in the housing 101 passes through the first cold air flow passage 6, the hot air flow passage 8 and the second cold air flow passage 7 in sequence and is blown out through the respective air outlets.

[0046] In this example, as shown in the accompanying drawings, the first cold air flow passage 6 comprises a first inlet 601 and a first outlet 602, the second cold air flow passage 7 comprises a second inlet 701 and a second outlet 702, and the hot air flow passage 8 comprises an air flow inlet 801 and an air flow outlet 802. The first outlet 602, the second outlet 702 and the air flow outlet 802 are air outlets of the air flow passages as described above. The inner cylinder 19 is in the shape of a cylinder or other shapes. The second cold air flow passage 7, the hot air flow passage 8 and the first cold air flow passage 6 are arranged in sequence from the inside to the outside. The arrangement of the two cold air flow passages can timely remove the temperature rise in the heat insulation member 401 and the housing 101 caused by the heat radiation of the heating unit 4, thereby preventing the heating unit 4 from being red and causing safety accidents. Moreover, the arrangement of the two cold air flow passages can reduce the temperature of the air flow blown out by the electric hair dryer, thereby preventing the hair from drying and becoming frizzy. Figure 2 3 The first cold air flow passage 6 surrounds the hot air flow passage 8. The first cold air flow passage 6 is in the shape of a ring, and the hot air flow passage 8 is also in the shape of a ring.

[0047] The first cold air flow passage 6 surrounds the hot air flow passage 8. The first cold air flow passage 6 is in the shape of a ring, and the hot air flow passage 8 is also in the shape of a ring.

[0048] ​​The airflow drawn by the fan unit 3 enters the hot air flow path 8 and the second cold air flow path 7, respectively. The second cold air flow path 7 includes a second inlet 701. The heating unit 4 includes a heating wire. The second inlet 701 is located upstream of the heating wire, ensuring that the airflow entering the second cold air flow path 7 is unheated. The temperature of this airflow when it is blown out from the second outlet 702 is higher than the temperature when it enters from the second inlet 701. This is because the heating wire is arranged around the thermal insulation member 401. During operation, the heating wire causes the temperature within the hollow channel of the thermal insulation member 401 to rise. After the cold airflow passes through the thermal insulation member 401, it removes the heat within the hollow channel and the heat on the inner surface of the thermal insulation member 401. Therefore, the temperature of the airflow blown out from the second outlet 702 will rise. The situation is the same as described above when the cold airflow passes through the first cold air flow path 6.

[0049] The fan unit 3 is disposed within the housing 101, and the air inlet 5 is disposed at the rear end of the housing 101. Air drawn into the housing 101 by the fan unit 3 enters the first cold air flow path 6, the second cold air flow path 7, and the hot air flow path 8, respectively. The air entering the housing 101 passes through a first inlet 601, a second inlet 701, and an air inlet 801, respectively, into the first cold air flow path 6, the second cold air flow path 7, and the hot air flow path 8. In this example, the first inlet 601 is defined by the housing 101 and the inner cylinder 19; the air inlet 801 is defined by the inner cylinder 19 and the thermal insulation member 401. The fan unit 3 includes a motor 301, fan blades 302 driven to rotate by the motor 301, and a fixing bracket 303 for fixing the motor 301. The second inlet 701 is defined by the fixing bracket 303 and the thermal insulation member 401. It is understood that the first inlet 601 may be a hole provided in the inner cylinder 19, and the second inlet 701 may be a hole provided in the thermal insulation member 401.

[0050] The first cold air flow passage 6 includes a first inlet 601 located upstream of the heating wire. The airflow entering the first cold air flow passage 6 is cold airflow, forming a thermal isolation space between the outer shell 101 and the inner cylinder 19 to prevent the outer shell 101 from getting hot.

[0051] The first inlet 601 is located downstream of the second inlet 701. This facilitates installation of the fan unit 3 while ensuring sufficient power for the fan unit 3, fully utilizing the interior space of the housing 101 and miniaturizing the hair dryer. It is understood that the first inlet 601 can be flush with the second inlet 701 or upstream of the second inlet 701.

[0052] The hair dryer also includes electronic components. Depending on the size and number of the electronic components, and depending on the situation, the electronic components can be placed in the first cold air flow path 6, the second cold air flow path 7, or both. The cold air flow dissipates heat from the electronic components, extending their service life. The electronic components can be thyristors, negative ion generators, water ion generators, etc.

[0053] The air volume and speed of the hot air flow passage 8 are both greater than those of the first and second cold air flow passages 6 and 7, which facilitates faster drying of hair and prevents frizz and dryness. The air volume and speed of the second cold air flow passage 7 are preferably greater than those of the first cold air flow passage 6, which helps reduce the temperature difference felt by the scalp and improves user comfort.

[0054] The cold airflow from the first cold airflow path 6 and / or the second cold airflow path 7 merges into the hot airflow path 8, lowering the temperature of the hot airflow path 8 and preventing dryness and frizziness caused by excessive heat. In this example, the cold airflow from the second cold airflow path 7 merges into the hot airflow path 8. The thermal insulation 401 includes a tapered section positioned near the second outlet 702. Multiple third outlets 703 are provided on the sidewalls of the tapered section. The cold airflow from the second cold airflow path 7 merges into the hot airflow path 8 through the third outlets 703 and is blown out through the airflow outlets 802.

[0055] It is understandable that the cold air in the first cold air flow passage 6 merges into the hot air flow passage 8. More specifically, a fourth outlet is provided on the inner cylinder 19, and the cold air in the first cold air flow passage 6 merges into the hot air flow passage 8 from the fourth outlet and is blown out from the air flow outlet 802.

[0056] like Figure 4 As shown, the housing 101 includes a cylindrical outer wall and an inner wall 11 connected to the cylindrical outer wall. The inner wall 11 and the outer wall are connected by ribs 12. The first outlet 602 is defined by the inner wall 11 and the outer wall. This improves assembly efficiency.

[0057] Example 2:

[0058] The difference between this embodiment and the first embodiment is that Figure 5 、 6As shown, the fan unit 3 is disposed within the handle assembly 2, the air inlet 5 is disposed on the handle assembly 2, the heating unit 4 is disposed within the inner cylinder 19, and the rear end of the inner cylinder 19 is sealed. The rear end of the housing 101 is also provided with a first air inlet 10, through which air flows into the first cold air flow path 6. The airflow in the hot air flow path 8 and the second cold air flow path 7 is airflow drawn into the interior of the hair dryer by the fan unit 3, while the first cold air flow path 6 is passive airflow or airflow drawn into the interior of the housing 101 by other fan units 3. Sealing the rear end of the inner cylinder 19 has the advantage of preventing air volume and pressure from leaking out, thereby reducing the loss of air volume and pressure when the air flows out of the second outlet 702 and the airflow outlet 802.

[0059] An example, such as Figure 5 As shown, the hair dryer also includes a first fan unit 13 arranged in the first cold air flow passage 6 for drawing air from the first air inlet 10 into the first cold air flow passage 6. The first fan unit 13 is located upstream of the fan unit 3. Through the setting of the first fan unit 13, the air volume and air pressure of the first cold air flow passage 6 are increased.

[0060] Another example, such as Figure 6 As shown, the airflow in the first cold airflow path 6 is driven by the airflow blown out from the hot airflow path 8 and / or the second cold airflow path 7 to draw the airflow outside the hair dryer into it from the first air inlet 10. At this time, the airflow in the first cold airflow path is passive airflow.

[0061] The above embodiments are only optimized embodiments of the present invention, not all embodiments of the present invention. Based on the principles of the present invention, those skilled in the art can make various modifications. As long as they do not depart from the spirit of the present invention, they should all fall within the scope defined by the claims of the present invention.

Claims

1. A hair dryer that is comfortable to use, comprising a housing assembly having a housing, and a handle assembly connected to the housing; The hair dryer further comprises a fan unit and a heating unit disposed in the housing, wherein the fan unit is configured to draw air from an air inlet of the hair dryer into the interior of the housing; It is characterized in that The heating unit includes a heat insulating member having a hollow channel, an inner cylinder is further provided in the outer shell, and the hair dryer includes a first cold air flow path defined by the outer shell and the inner cylinder for passing cold air flow, a second cold air flow path defined by the heat insulating member for passing cold air flow, and a hot air flow path defined by the inner cylinder and the heat insulating member, and the air flow inside the outer shell passes through the first cold air flow path, the hot air flow path, and the second cold air flow path and is blown out from the respective air outlets; The airflow drawn by the fan unit enters the hot airflow path and the second cold airflow path respectively, the second cold airflow path includes a second inlet, the heating unit includes a heating wire, and the second inlet is located upstream of the heating wire; The fan unit is arranged in the handle assembly, the air inlet is arranged on the handle assembly, the heating unit is arranged in the inner cylinder and the rear end of the inner cylinder is sealed, and the rear end of the shell is also provided with a first air inlet, and the air flow enters the first cold air flow path from the first air inlet; The hair dryer further comprises a first fan unit arranged in the first cold air flow passage and used for drawing air from the first air inlet into the first cold air flow passage, wherein the first fan unit is located upstream of the fan unit.

2. The hair dryer according to claim 1, characterized in that The cold airflow in the first cold airflow passage and / or the second cold airflow passage is mixed into the hot airflow passage at an air outlet close to the hot airflow passage.

3. The hair dryer according to any one of claims 1 to 2, characterized in that: The hair dryer further comprises an electronic component, which is arranged in the first cold air flow passage and / or the second cold air flow passage.

4. The hair dryer according to any one of claims 1 to 2, characterized in that: The air outlet of the first cold air flow passage is a first outlet. The shell includes a cylindrical outer wall and an inner wall connected to the cylindrical outer wall. The inner wall and the outer wall are connected by ribs. The first outlet is defined by the inner wall and the outer wall.

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