CN219962162U

CN219962162U - Cold-air-free infant blower

Info

Publication number: CN219962162U
Application number: CN202321037119.7U
Authority: CN
Inventors: 肖宁; 徐玲
Original assignee: Zhejiang Hangjia Industry And Trade Co ltd
Current assignee: Zhejiang Hangjia Industry And Trade Co ltd
Priority date: 2023-05-04
Filing date: 2023-05-04
Publication date: 2023-11-07
Anticipated expiration: 2033-05-04

Abstract

The utility model relates to a cold-air-free infant blower, which comprises an air duct (1) with an air inlet and an air outlet, wherein an installation seat (4) is fixedly connected in the air duct, a motor fan (3) is installed on one side of the installation seat, a heating element (5) is installed on the other side of the installation seat, the air duct is fixedly connected with a handle (2), a rechargeable battery (8) is arranged in the handle, a preheating device (7) is arranged between an air inlet (6) of the air duct (1) and the installation seat (4), the preheating device (7) comprises an air guide sleeve (71), a group of heat conducting fins (73) are connected with the inner wall of the guide sleeve (71), a heater (72) is installed on the heat conducting fins (73), and the heater (72), the motor fan (3), the heating element (5) and the rechargeable battery (8) are all electrically connected with a circuit control board (9). The preheating device provided by the utility model can preheat the sucked air in advance, has a wind-retarding function, and is matched with the motor fan and the heating body, so that the hot air blown into the human body is uniform, and the skin is not stimulated.

Description

Cold-air-free infant blower

Technical Field

The utility model relates to the technical field of small household appliances, in particular to a cold-air-free infant blower.

Background

The blower is a common household small electric appliance, and mainly uses a fan to heat air flow through a heating body, and blow the air flow to human skin or hair for hot air drying. At present, the blower used for infants in the market has lower heat power, and the blower with lower power not only can reduce electromagnetic radiation, but also can prevent hot air from scalding the delicate skin of the infants, thus being popular in the market.

However, the existing infant blower also has certain disadvantages, such as a portable infant blower with the bulletin number of CN206261070U, which comprises a machine barrel and an operating handle, wherein the machine barrel is connected with the operating handle, a temperature sensor is arranged at an air outlet of the machine barrel, a fan blade, a motor and an electric heating wire are arranged in the machine barrel, the fan blade is connected with a transmission shaft of the motor, a gear switch is arranged on the side wall of the operating handle, a controller and a battery are arranged in the operating handle, the controller is respectively electrically connected with the gear switch, the temperature sensor, the motor and the electric heating wire, and the battery supplies power to the controller, the motor and the electric heating wire respectively.

After the blower with the structure is started up in a heating gear, air flow with small temperature difference with room temperature can be blown out in a few seconds or even longer time. Because the hot air function of the infant blower is mainly used when the weather is colder, and the phenomenon of cold air appears more obviously when the infant blower is started for a period of time under the condition of lower external environment temperature in winter, discomfort can be generated when the cold air is blown to the infant, irritation can be generated when the cold air is blown to wet hair and wet skin, and even the infant can catch cold due to cold; if the blower is started first to preheat for a period of time and then used, the operation is troublesome, the use is inconvenient, and whether the wind temperature is proper cannot be determined.

Disclosure of Invention

The utility model provides a cold air-free infant blower, which aims to solve the problem that cold air blowing occurs in a period of time when the blower is just started.

The utility model adopts the following technical scheme:

a cold-air-free infant blower comprises an air duct with an air inlet and an air outlet, wherein an installation seat is fixedly connected in the air duct, a motor fan is installed on one side of the installation seat, a heating body is installed on the other side of the installation seat, the air duct is connected with a handle, a rechargeable battery and a circuit control board are arranged in the handle, and a preheating device is arranged between an air inlet of the air duct and the installation seat;

the preheating device comprises an air guide sleeve fixedly connected with the air duct, the inner wall of the air guide sleeve is connected with a group of heat conducting fins, a heater is arranged on the heat conducting fins, and the heater, the motor fan, the heating body and the rechargeable battery are electrically connected with the circuit control board.

Further, the heat conducting fins are circumferentially and uniformly distributed on the inner wall of the air guide sleeve, and the thickness of the heat conducting fins linearly decreases from the inner wall of the air guide sleeve to the central shaft of the air guide sleeve.

Further, the preheating device further comprises a rotatable slow fan, and the slow fan is connected to the end part of the air guide sleeve through a support seat.

Further, the slow fan is connected with a slow wind motor, and the slow wind motor is installed on a support seat.

Further, the slow fan is connected with a rotating shaft, and the rotating shaft is arranged on a bracket seat through a bearing.

Further, the heater is electrically connected with an overheat protection switch, the overheat protection switch is positioned at an air outlet of the air duct, and when the temperature of the air outlet is higher than a set threshold value, the heater is controlled by the circuit control board to cut off power and stop working.

The utility model has the beneficial effects that:

1. the preheating device that this scheme was through setting up can preheat the inhaled air in advance, also has the function of slowing wind simultaneously, and it is even to cooperate motor fan and heat-generating body again, and the hot-blast that blows out to the human body does not irritate skin.

2. The power of each motor can be reduced on the premise of the same air output rate by the double-motor air blowing, so that the electric measurement radiation generated by the motors under the action of high power can be reduced.

Drawings

FIG. 1 is a schematic structural view of a cold air-free infant blower according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a preheating device according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a support base according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of A-A in FIG. 3;

FIG. 5 is a schematic diagram showing a connection structure of a buffer fan according to another embodiment of the present utility model.

Reference numerals illustrate: 1. an air duct; 11. rib plates; 2. a handle; 3. a motor fan; 4. a mounting base; 41. a first sleeve; 42. a second sleeve; 43. a connecting rib; 5. a heating element; 6a, an air inlet; 6b, an air outlet; 7. a preheating device; 71. an air guiding sleeve; 71a, a connection part; 72. a heater; 73. a heat conductive sheet; 74. a slow fan; 75. a wind-retarding motor; 76. a support seat; 76a, an annular plate; 76b, connecting beams; 76c, a third sleeve; 77. a bearing; 78. an overheat protection switch; 8. a rechargeable battery; 9. and a circuit control board.

Description of the embodiments

For the purposes of making the present utility model more apparent, a cold air free infant blower of the present utility model will be further described with reference to the accompanying drawings, wherein the specific embodiments described herein are for purposes of illustration only and are not intended to be limiting.

Referring to fig. 1, a cold air-free infant blower comprises a cylindrical air duct 1, wherein the air duct 1 is preferably a plastic piece, the right end of the air duct 1 is an air inlet 6a, the left end of the air duct is an air outlet 6b, and the air inlet and the air outlet are both connected with a safety net (not shown in the figure). The inside of the air duct 1 is fixedly connected with a mounting seat 4 through a rib plate 11. The mount pad 4 is two sleeve pipe structures, including inboard first sleeve pipe 41 and outside second sleeve pipe 42, connect through the connecting rib 43 of equipartition between first, the second sleeve pipe, first sleeve pipe 41 suit motor fan 3, motor fan 3's induced draft side is towards air intake 6a. The second sleeve 42 has a conical structure, and the small end of the second sleeve faces the air outlet 6b so as to play a role in guiding and guiding the cage wind. The heating body 5 is fixedly arranged on one side of the mounting seat 4 far away from the air inlet 6a through a screw. The heating element 5 is in the prior art, and is integrally in a frustum shape, and is composed of a conical frame and a group of resistance heating wires wound on the conical frame, wherein high-temperature heat insulation paper (not shown in the figure) is arranged outside the surface of the heating wires in a non-contact manner, and can be stuck on the inner wall of the second sleeve 42 so as to reduce adverse effects of high temperature on the second sleeve 42 and the air duct 1.

The air duct 1 is fixedly connected with the handle 2, and a rechargeable battery 8 and a circuit control board 9 are arranged in the handle 2. A preheating device 7 is arranged between an air inlet 6a in the air duct and the mounting seat 4, and the preheating device 7, the motor fan 3, the heating body 5 and the rechargeable battery 8 are electrically connected with a circuit control board 9.

Referring to fig. 2, the preheating device 7 includes a wind guiding sleeve 71 with two ends being directly connected, and the wind guiding sleeve 71 may be made of metal with good thermal conductivity, preferably an aluminum alloy piece. The air guiding sleeve 71 is connected with the air duct 1 through a high temperature resistant and heat insulating connecting part 71a, such as a ceramic plate. Wherein, the caliber of the air guide sleeve 71 is the same as that of the air inlet 6a, and the axis of the air guide sleeve 71 coincides with the axis of the air duct 1. A group of heat conducting fins 73 are uniformly distributed around the circumference of the central axis of the air guiding sleeve 71, and the heat conducting fins 73 are made of aluminum alloy. Each of the heat conductive fins 73 guides the central axis of the air guide 71, and the thickness thereof linearly decreases from the inner wall of the air guide 71 to the central axis, so that the resistance of the surface thereof to the air flow can be reduced. The air flow can flow through the circular channel formed by the inner ends of the heat conductive fins 73 through the gaps between the heat conductive fins 73. Here, the air guide cover 71 and the heat conductive sheet 73 may be integrally formed. A group of heat generators 72 are further installed on the heat conductive sheet 73, and the heat generators 72 generate heat and transfer the heat to the wind-guiding cover 71. The heater 72 is embodied as a small-sized resistance heating wire or a pct heating patch, and is used for heating and reducing the obstruction of air flow. The group of heaters 72 are electrically connected with the circuit control board 9 together through the overheat protection switch 78, the overheat protection switch 78 is fixed on the inner side of the air outlet 6b of the air duct, the detected temperature signals are transmitted to the circuit control board 9, and the circuit control board 9 judges whether the operation of the heaters 72 is on or off by comparing the temperature threshold values in the set program.

A support seat 76 is disposed on the end of the air guiding sleeve 71 away from the air inlet 6a, and a rotatable slow fan 74 is connected to the support seat 76, and in some embodiments, the slow fan 74 is a power fan structure driven by a slow motor 75, and the slow motor 75 has two working modes of low rotation speed and high rotation speed. The wind-retarding motor 75 is electrically connected with the circuit control board 9.

As shown in fig. 3 and 4, the specific structure of the support seat 76 is shown, the support seat 76 includes an annular plate 76a fixedly connected with the air guiding sleeve 71, the inner side of the annular plate 76a is connected with a third sleeve 76c through a pair of uniformly distributed connection beams 76b, the third sleeve 76c is used for sleeving the slow wind motor 75, and the central axis of the third sleeve 76c coincides with the central axis of the air guiding sleeve 71. Wherein, leave great space for the air current to pass through between the tie-beam 76b to slow wind motor 75's diameter is less, and the third ampere-sleeve pipe 76c size is also less correspondingly, reduces the hindrance to the air current.

The working process of the device comprises the following steps:

when the warm air stop is used in winter, the circuit control board 9 enables the heater 72 and the air-retarding motor 75 to work firstly according to the built-in program, the heater 72 heats and conducts heat to the air-guiding sleeve 71 through the heat conducting fin 73, and nearby air is heated; the slow wind motor 75 is in a low rotation speed operation mode, generates only breeze, and mixes locally overheated air; after a certain period of operation (for example, 5 s), the motor fan 3 and the heat generating body 5 start to operate again to generate hot air, and the slow wind motor 75 is in the high rotation speed operation mode. When the temperature at the air outlet of the air duct 1 is higher than a set threshold (for example, 45 ℃), the overheat protection switch 78 turns off the operating circuit of the heater 72, and the heater 72 stops the heat generating operation.

In the process, the preheating device 7 can preheat the sucked air in advance, so that the path length of air heating is increased, meanwhile, the locally overheated air can be uniformly mixed, and the effect of the motor fan 3 and the heating body 5 is matched, so that the air flow blown out to the human body has higher and uniform temperature, and skin is not stimulated.

In addition, as the slow wind motor 75 is added, when the slow wind motor 75 is in a high-rotation-speed working mode, the power of each motor can be relatively reduced on the premise that the blower is in the same air output, and as the radiation quantity of the motor is very small in a low-power use state, the total electric measurement radiation quantity of the motor can be integrally reduced, and the radiation of the blower is reduced.

Of course, in some embodiments, the slow fan 74 may also be an unpowered fan configuration: as shown in fig. 5, the bracket seat 76 has the same structure as that of the above embodiment, and the buffer fan 74 is connected to a rotating shaft, and the rotating shaft is mounted in the third sleeve 76c through a bearing 77. The structure is simpler, and the effect of no cold air when the blower is started can be achieved on the premise of lower cost.

The above examples of the present utility model are merely illustrative of the present utility model and are not intended to limit the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While those obvious variations or modifications which come within the spirit of the utility model remain within the scope of the utility model.

Claims

1. The utility model provides a no cold wind infant hair-dryer, includes dryer (1) that has air inlet, air outlet, fixed connection mount pad (4) in dryer (1), motor fan (3) are installed to mount pad (4) one side, the heat-generating body (5) are installed to the opposite side, dryer (1) are connected with handle (2), are equipped with rechargeable battery (8) and circuit control board (9), its characterized in that in handle (2): a preheating device (7) is arranged between an air inlet (6 a) of the air duct (1) and the mounting seat (4);

the preheating device (7) comprises an air guide sleeve (71) fixedly connected with the air duct (1), a group of heat conducting fins (73) are connected to the inner wall of the air guide sleeve (71), a heater (72) is arranged on the heat conducting fins (73), and the heater (72), the motor fan (3), the heating body (5) and the rechargeable battery (8) are electrically connected with the circuit control board (9).

2. A cold air free infant blower as claimed in claim 1, wherein: the heat conducting fins (73) are circumferentially and uniformly distributed on the inner wall of the air guide sleeve (71), and the thickness of the heat conducting fins (73) linearly decreases from the inner wall of the air guide sleeve (71) to the central shaft of the air guide sleeve (71).

3. A cold air free infant blower as claimed in claim 2, wherein: the preheating device (7) further comprises a rotatable slow fan (74), and the slow fan (74) is connected to the end part of the air guide sleeve (71) through a support seat (76).

4. A cold air free infant blower as claimed in claim 3, wherein: the slow fan (74) is connected with the slow wind motor (75), and the slow wind motor (75) is arranged on the support seat (76).

5. A cold air free infant blower as claimed in claim 3, wherein: the slow fan (74) is connected with a rotating shaft, and the rotating shaft is arranged on a bracket seat (76) through a bearing (77).

6. A cold air free infant blower according to claim 1 or 3, wherein: the heater (72) is electrically connected with the overheat protection switch (78), the overheat protection switch (78) is positioned at the air outlet (6 b) of the air duct (1), and when the temperature of the air outlet (6 b) is higher than a set threshold value, the heater (72) is controlled by the circuit control board (9) to cut off power and stop working.