Portable hot air circulation electric heater

Abstract

The invention relates to a portable hot air circulation electric heater, and belongs to the technical field of electric heaters. Comprising a hollow shell, a heat regulator, a hot air heating mechanism and a cooling mechanism, the heat regulator is installed on the top face of the hollow shell, is in communication connection with the hot air heating mechanism and the cooling mechanism and is used for detecting and adjusting the heating efficiency of the hot air heating mechanism, and the hot air heating mechanism is installed in the hollow shell; a cooling runner is arranged in the hollow shell and wraps the hot air heating mechanism, a ventilation groove is formed in the air inlet end of the hot air heating mechanism, the inner side surface of the hollow shell is wrapped with a heat insulation layer, a cooling opening is formed in the top face of the hollow shell, and the cooling mechanism is installed at the top of the hollow shell and used for controlling communication of the cooling opening and the cooling runner. And the cooling mechanism adjusts the opening size of the cooling opening according to the detection result of the heat regulator. The problem that scalding is difficult to avoid in the using process of an existing electric heater is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric heaters, and in particular relates to a portable hot air circulation electric heater. Background Art

[0002] Electric heaters have become increasingly popular in recent years because of their portability, comfortable heating, and functions such as heating to drive away the cold, drying and dehumidifying. Existing electric heaters are electrical devices that use electricity as their main energy source and use resistance heating, arc heating, infrared heating and other heating methods, as well as warm air convection and other methods to provide warmth to the human body. Existing heat generating devices of electric heaters are generally composed of a plurality of heating resistors, which then blow hot air through a blower mechanism to provide warmth to the human body. However, since the outer surface temperature of the hot air generating device is relatively high when it is in operation, there is still residual heat even when the electric heater stops running. Moreover, since most of the electric heaters are metal structural parts, the heat generated by the internal heating element when it is turned on for a long time will cause the metal parts on the surface of the electric heater to be very The high temperature may cause users or children to accidentally touch the electric heater and get burned. Currently, many anti-scalding methods for electric heaters have been proposed, such as using infrared emission light fields and millimeter wave radar technology to detect the distance between living things and electrical appliances in real time. When a living thing approaches, it immediately triggers a power outage to protect the user. However, because most electric heaters are metal structures, the heat generated by the internal heating element when it is turned on for a long time will make the metal parts on the surface of the electric heater have a very high temperature. If only the power outage is triggered by the proximity of a living thing, the high temperature surface will still cause skin burns, which is not enough to ensure that burns are avoided. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention provides a portable hot air circulation electric heater, which solves the problem that burns are difficult to avoid during use of the existing electric heaters.

[0004] The objectives of the present invention can be achieved through the following technical solutions: a portable hot air circulation electric heater, comprising a hollow shell, a heat regulator, a hot air heating mechanism and a cooling mechanism, the heat regulator being installed on the top surface of the hollow shell and being communicatively connected with the hot air heating mechanism and the cooling mechanism, the heat regulator being used to detect and adjust the heating efficiency of the hot air heating mechanism, the hot air heating mechanism being installed in the hollow shell, a cooling flow channel being provided in the hollow shell and the cooling flow channel wrapping the hot air heating mechanism, a ventilation groove being provided at the air inlet end of the hot air heating mechanism, an air outlet being provided at one end of the hollow shell and an air inlet being provided at the other end, the inner surface of the hollow shell being wrapped with a heat insulation layer, the top surface of the hollow shell being provided with a cooling port, the cooling mechanism being installed on the top of the hollow shell and being used to control the connection between the cooling port and the cooling flow channel, and the cooling mechanism adjusting the opening size of the cooling port according to the detection result of the heat regulator.

[0005] As a preferred technical solution of the present invention, the cooling mechanism includes a driver and a baffle plate, the hollow shell is provided with a slide groove near the top of the cooling port, the driver is installed at the bottom of the slide groove, the baffle plate is connected to the driving end of the driver, and the baffle plate is slidably connected in the slide groove and blocks the cooling port.

[0006] As a preferred technical solution of the present invention, the hot air heating mechanism includes a heating shell with hollow ends, a heater and a circulating fan, the heating shell is installed in the hollow outer shell, the circulating fan is installed in the heating shell, the heater is installed at the front end of the circulating fan, and an air inlet groove is opened on the outer side surface of the rear end of the heating shell, and the air inlet groove is connected to the cooling flow channel.

[0007] As a preferred technical solution of the present invention, the front end and the rear end of the heating shell are both provided with protective nets.

[0008] As a preferred technical solution of the present invention, the heater is composed of two heating plates, and a plurality of ventilation holes are provided in the middle of the heating plates.

[0009] As a preferred technical solution of the present invention, the heat regulator includes an adjustment button and a heat detector. The adjustment button is installed on the top surface of the hollow shell and controls the heating efficiency of the hot air heating mechanism. The heat detector is installed in the hollow shell and is used to detect the heating value of the hot air heating mechanism.

[0010] As a preferred technical solution of the present invention, the heat insulation layer is composed of a reflective layer and a heat preservation layer, and the reflective layer is close to one side of the hot air heating mechanism.

[0011] As a preferred technical solution of the present invention, a handle is provided on the top surface of the hollow shell.

[0012] The beneficial effects of the present invention are: by arranging a cooling channel air layer and a heat insulation layer on the outside of the hot air heating mechanism, the heat transferred to the hollow shell is reduced, and at the same time, the cooling mechanism controls the opening size of the cooling port according to the detection result of the heat regulator, thereby controlling the temperature in the cooling channel, and then controlling the temperature of the hollow shell, solving the problem of burns that are difficult to avoid during the use of existing electric heaters. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a partial cross-sectional view of the electric heater of the present invention;

[0016] Figure 3It is a side sectional view of the present invention;

[0017] Main component symbols

[0018] In the figure: 1. hollow shell; 11. air outlet; 12. air inlet; 13. cooling port; 14. cooling channel; 2. heat regulator; 21. adjustment button; 22. heat detector; 3. hot air heating mechanism; 31. ventilation slot; 32. heating shell; 33. heater; 34. circulating fan; 35. protective net; 4. cooling mechanism; 41. driver; 42. baffle; 5. thermal insulation layer; 6. handle. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0020] See also Figure 1-Figure 3The present embodiment provides a portable hot air circulation electric heater, comprising a hollow shell 1, a heat regulator 2, a hot air heating mechanism 3 and a cooling mechanism 4. The hot air heating mechanism 3 is installed in the hollow shell 1. The heat regulator 2 is installed on the top surface of the hollow shell 1 and is communicated with the hot air heating mechanism 3. The heat generation of the hot air heating mechanism 3 can be adjusted by the heat regulator 2. The front end of the hollow shell 1 is provided with an air outlet 11, and the rear end is provided with an air inlet 12. At the same time, a cooling channel 14 is provided inside the hollow shell 1, and the cooling channel 14 wraps the hot air heating mechanism 3. A ventilation slot 31 is provided on the top surface of the hollow shell 1. The ventilation slot 31 is communicated with the cooling channel 14, a cooling port 13 is provided on the top surface of the hollow shell 1, the cooling port 13 is communicated with the cooling channel 14, and the cooling mechanism 4 is installed on the top of the hollow shell 1 and controls the opening of the cooling port 13. When the electric heater is started for heating, the air in the air inlet 12 enters the hot air heating mechanism 3 for heating, and then the hot air is blown out from the air outlet 11 for heating. Since there is a layer of cooling channel 14 between the hot air heating mechanism 3 and the hollow shell 1 to separate the hot air heating mechanism 3 and the hollow shell 1, and during the operation of the hot air heating mechanism 3, the cooling mechanism 4 will be closed first. The cooling port 13 allows the ventilation slots 31 to absorb the air in the cooling channel 14 to blow out hot air, so that the air content in the cooling channel 14 is at a low level, thereby forming an air insulation layer 5, so that the hot air heating mechanism 3 can quickly complete the temperature rise for heating, and at the same time, the heat generated by the hot air heating mechanism 3 is insulated by the formed air insulation layer 5 and the set insulation layer 5 to transfer the heat to the hollow shell 1, causing the temperature of the hollow shell 1 to rise and cause skin burns. When the hot air heating mechanism 3 increases with the use time, the temperature in the cooling channel 14 begins to gradually rise. At this time, When the heat regulator 2 detects that the heat generated by the hot air heating mechanism 3 reaches a set threshold, that is, when the temperature in the cooling channel 14 reaches a set threshold, the cooling mechanism 4 will open to allow external cold air to enter the cooling channel 14 from the cooling port 13, and then enter the hot air heating mechanism 3 from the ventilation slot 31 to realize the blowing of hot air, thereby reducing the temperature in the cooling channel 14. The cooling mechanism 4 controls the opening size of the cooling port 13 according to the detected heat, so that the temperature in the cooling channel 14 can be maintained within a stable range, thereby avoiding the situation where the temperature of the hollow shell 1 is too high and causes burns.

[0021] When the heating is over, the cooling mechanism 4 will fully open the cooling port 13 to allow external cold air to enter the cooling channel 14 through the cooling port 13, and allow the cold air in the cooling channel 14 to wrap the hot air heating mechanism 3, thereby reducing the residual heat of the hot air heating mechanism 3, and further reducing the heat output to the hollow shell 1, so that the temperature of the hollow shell 1 can be controlled during use and after the heating is completed, to avoid burns caused by the overly high temperature of the hollow shell 1.

[0022] The present invention reduces heat transfer to the hollow shell 1 by arranging a cooling channel 14 air layer and a heat insulating layer 5 on the outer side of the hot air heating mechanism 3, and at the same time allows the cooling mechanism 4 to control the opening size of the cooling port 13 according to the detection result of the heat regulator 2, thereby controlling the temperature in the cooling channel 14, and then controlling the temperature of the hollow shell 1, thereby avoiding the situation where the temperature of the hollow shell 1 is too high and causes burns.

[0023] In order to better control the opening size of the cooling port 13 to control the temperature range in the cooling channel 14, in this embodiment, the cooling mechanism 4 includes a driver 41 and a shielding plate 42. A slide groove is provided on the top of the hollow shell 1 near the cooling port 13. The driver 41 is installed at the bottom of the slide groove. The shielding plate 42 is connected to the driving end of the driver 41. The shielding plate 42 is slidably connected in the slide groove and shields the cooling port 13. When the temperature in the cooling channel 14 rises to a set threshold, the driver 41 will drive the shielding plate 42 to slide into the slide groove to open the cooling port 13, so that the outside The cold air from the outside can enter the cooling channel 14 from the cooling port 13 to reduce the temperature in the cooling channel 14, thereby controlling the temperature in the cooling channel 14 to avoid the temperature in the cooling channel 14 being too high and causing the temperature of the hollow shell 1 to be too high. At the same time, the position of the baffle plate 42 is controlled by the driver 41 to control the air flow in the cooling channel 14, thereby controlling the temperature of the hollow shell 1 without affecting the heating of the hot air heating mechanism 3, thereby avoiding the situation where the hollow shell 1 is burned due to excessive temperature.

[0024] In order to provide a better heating effect, in one embodiment, the hot air heating mechanism 3 includes a heating shell 32 with two hollow ends, a heater 33 and a circulation fan 34. The heating shell 32 is installed in the hollow outer shell 1, and the circulation fan 34 is installed in the heating shell 32. The heater 33 is installed at the front end of the circulation fan 34. An air inlet groove is provided on the outer side surface of the rear end of the heating shell 32, and the air inlet groove is connected with the cooling flow channel 14. When heating is performed, the heater 33 is started to generate heat, and then the circulation fan 34 rotates to allow external air to enter the heating shell 32 from the air inlet end of the heating shell 32, and then the air is heated by the heater 33 and then blown out from the air outlet end of the heating shell 32, thereby providing a good heating effect for the user. When the heating is finished, the heater 33 stops heating, and the circulation fan 34 continues to rotate to drive the external air to enter from the cooling port 13, thereby reducing the temperature of the heating shell 32, so that the temperature of the hot air heating mechanism 3 can be cooled as soon as possible, thereby avoiding the situation where the temperature of the hollow outer shell 1 is too high.

[0025] Since the circulation fan 34 needs to maintain controlled circulation during operation, in order to ensure air circulation while reducing the risk of scalding, in one embodiment, a protective net 35 is provided at the front and rear ends of the heating shell 32. The protective net 35 helps to prevent dust and debris from entering the interior of the heating shell 32, keeping the interior of the device clean and maintaining good ventilation. At the same time, the protective net 35 can effectively prevent the user from accidentally contacting the heating element or the hot air outlet during use, thereby reducing the risk of scalding and improving safety of use.

[0026] In order to improve the effect of the heater 33 on heating the flowing air during the heating process, in one embodiment, the heater 33 is composed of two heating plates, and a plurality of ventilation holes are provided in the middle of the heating plates. When the circulating fan 34 rotates, the air will flow through the heater 33 and then flow out from the air outlet. Therefore, the air will pass through the ventilation holes in the heating plate during the flow. Since the heating plate is in a state of continuous heating and the aperture of the ventilation holes is small, when the air passes through the heating plate, the heat generated by the heating plate can be fully transferred to the flowing air, thereby achieving a rapid heating effect and avoiding the occurrence of uneven temperature at the air outlet 11.

[0027] In order to allow users to conveniently adjust the heating efficiency of the hot air according to their needs and better control the temperature in the cooling channel 14, thereby avoiding the situation where the temperature of the hollow shell 1 is too high, in one embodiment, the heat regulator 2 includes an adjustment button 21 and a heat detector 22. The adjustment button 21 is installed on the top surface of the hollow shell 1 and controls the heating efficiency of the hot air heating mechanism 3. The heat detector 22 is installed in the hollow shell 1 and is used to detect the heating value of the hot air heating mechanism 3. When using the electric heater of the present invention, the heating temperature can be controlled by adjusting the button 21, and at the same time, the heat detector 22 detects the temperature in the cooling channel 14, so that the cooling mechanism 4 can control the opening size of the cooling port 13 according to the detection result of the heat detector 22, thereby controlling the air circulation in the cooling channel 14, and then controlling the temperature of the cooling channel 14, thereby avoiding the situation where the temperature of the hollow shell 1 is too high.

[0028] In order to better reduce the temperature of the hollow shell 1 while ensuring the heating effect of the hot air heating mechanism 3, in one embodiment, the insulation layer 5 is composed of a reflective layer and a thermal insulation layer. The reflective layer is close to one side of the hot air heating mechanism 3. The reflective layer effectively reflects the heat back to the hot air heating mechanism 3, reducing the heat conduction to the outside, thereby ensuring the heating effect of the hot air heating mechanism 3 and reducing the heat transfer of the hollow shell 1. At the same time, the thermal insulation layer is used to further reduce the heat loss through the hollow shell 1, thereby effectively reducing the temperature of the hollow shell 1 and maintaining the heating effect of the hot air heating mechanism 3.

[0029] In order to carry the electric heater of the present invention more conveniently, in one embodiment, a handle 6 is provided on the top surface of the hollow shell 1. The handle 6 provided on the top surface of the hollow shell 1 greatly facilitates the carrying and movement of the electric heater, thereby improving the portability of the electric heater.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A portable hot air circulation electric heater, characterized in that: It includes a hollow shell, a heat regulator, a hot air heating mechanism and a cooling mechanism. The heat regulator is installed on the top surface of the hollow shell and is communicatively connected with the hot air heating mechanism and the cooling mechanism. The heat regulator is used to detect and adjust the heating efficiency of the hot air heating mechanism. The hot air heating mechanism is installed in the hollow shell. A cooling channel is provided in the hollow shell and the cooling channel wraps the hot air heating mechanism. A ventilation groove is provided at the air inlet end of the hot air heating mechanism. An air outlet is provided at one end of the hollow shell and an air inlet is provided at the other end. The inner surface of the hollow shell is wrapped with a heat insulation layer. A cooling port is provided on the top surface of the hollow shell. The cooling mechanism is installed on the top of the hollow shell and is used to control the connection between the cooling port and the cooling channel. The cooling mechanism adjusts the opening size of the cooling port according to the detection result of the heat regulator.

2. A portable hot air circulation electric heater according to claim 1, characterized in that: The cooling mechanism includes a driver and a shielding plate. A slide groove is opened at the top of the hollow shell near the cooling port. The driver is installed at the bottom of the slide groove. The shielding plate is connected to the driving end of the driver. The shielding plate is slidably connected in the slide groove and shields the cooling port.

3. A portable hot air circulation electric heater according to claim 1, characterized in that: The hot air heating mechanism includes a heating shell with hollow ends, a heater and a circulating fan. The heating shell is installed in the hollow outer shell, the circulating fan is installed in the heating shell, the heater is installed at the front end of the circulating fan, and an air inlet groove is opened on the outer side surface of the rear end of the heating shell, and the air inlet groove is connected to the cooling flow channel.

4. A portable hot air circulation electric heater according to claim 3, characterized in that: The front end and the rear end of the heating shell are both provided with protective nets.

5. A portable hot air circulation electric heater according to claim 3, characterized in that: The heater is composed of two heating plates, and a plurality of ventilation holes are arranged in the middle of the heating plates.

6. A portable hot air circulation electric heater according to claim 1, characterized in that: The heat regulator includes an adjustment button and a heat detector. The adjustment button is installed on the top surface of the hollow shell and controls the heating efficiency of the hot air heating mechanism. The heat detector is installed in the hollow shell and is used to detect the heating value of the hot air heating mechanism.

7. A portable hot air circulation electric heater according to claim 1, characterized in that: The heat insulation layer is composed of a reflective layer and a heat preservation layer, and the reflective layer is close to one side of the hot air heating mechanism.

8. The portable hot air circulation electric heater according to claim 1, characterized in that: A handle is provided on the top surface of the hollow shell.

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