CN215513612U

CN215513612U - PTC heating air window defroster

Info

Publication number: CN215513612U
Application number: CN202120465244.2U
Authority: CN
Inventors: 肖璇; 解嘉铖; 赵新; 韩野; 潘禹澎
Original assignee: FAW Bestune Car Co Ltd
Current assignee: FAW Bestune Car Co Ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2022-01-14
Anticipated expiration: 2031-03-04

Abstract

The utility model discloses a PTC heating air window defroster which comprises a handheld main body and a defrosting circuit, wherein the handheld main body is provided with a handheld groove of the handheld main body, so that a handle is formed at the top of the handheld main body; the bottom of the handheld main body is provided with a PTC heating end face; the bottom of the handheld main body can be detachably connected with a scraping piece, and the scraping piece is positioned on the side of the PTC heating end face; the rear end face of the handheld main body is provided with a switch which is electrically connected with the defrosting circuit. The defrosting circuit comprises a PTC thermistor, a rechargeable power supply and a resistor, wherein the PTC thermistor is arranged on the PTC heating end face, the PTC thermistor and the rechargeable power supply are connected in series with the switch to form a loop, and the resistor is used as a branch and is connected in parallel with the PTC thermistor. The PTC temperature control device has the advantages that due to the self constant temperature characteristic of the PTC, a complex temperature control element is not needed in the structure, the cost is reduced, and the PTC temperature control device is small in size and convenient to carry.

Description

PTC heating air window defroster

Technical Field

The utility model relates to a PTC heating air window defroster which is particularly suitable for defrosting or deicing of a front air window of an automobile in winter in the north and in rainy, snowy and frozen weather.

Background

In winter in the north and in rainy, snowy and frozen weather, the front wind window of the automobile has thick frost or ice, and the driving safety of the automobile can be seriously imaged. Blowing the window open through the air conditioner requires a longer hot-car time, while the traditional manual scraper is not easy to scrape down, is laborious and damages the window glass.

At present, the conventional resistance wire is mostly adopted for heating in the auxiliary heating defrosting mode, and the phenomenon of burning red due to failure is easy to occur due to the fact that more temperature control elements are needed. The PTC thermistor heater has the advantages of constant-temperature heating, no open fire, high heat conversion rate, little influence of power supply voltage, long natural service life and the like which cannot be compared with the traditional heating element.

CN204279371U discloses a hand-held defrosting device for automobile glass, which uses heating wire to heat, and this solution lacks an important temperature control unit, and has only a variable resistor, because the variable resistor cannot cut off the overheating circuit in time like the temperature control unit, according to Q ═ I²Rt shows that the resistance wire is overheated and burned to be red with the lapse of time, which is dangerous for users and easily causes serious uneven heating of the windshield glass due to overhigh temperature, thereby damaging the windshield glass.

CN 111447706A discloses electrical heating glass defrosting stick, including water storage box, electric heating wire, wire and power source, electric heating wire is located inside the water storage box, power source is located the water storage box outside, electric heating wire and power source pass through the wire and connect into the return circuit, the wire passes water storage box outer wall, the water inlet is located to water storage box one end, water inlet department is equipped with sealed lid, the water storage box is equipped with the flexible heat-conducting layer that is used for with the glass laminating in one side relative with power source.

CN107054307B discloses a hand-held defrosting device for automobile windshield and its defrosting method, which comprises a casing, a power supply, a switch, a first large-diameter belt pulley, a transmission belt, a first small-diameter belt pulley, a wind cavity baffle, a motor, an impeller, a heating element, a frost scraping plate, a cylindrical roller, a roller sleeve, a display screen, a heating strip, an air outlet baffle, a second small-diameter belt pulley, a second large-diameter belt pulley, a humidity-sensitive sensor and a water scraping assembly. The utility model adopts two defrosting modes of warm air defrosting and doctor blade defrosting simultaneously, is convenient and labor-saving and has high defrosting effect. The utility model uses the roller sleeve made of cotton and linen materials to wipe snow water, so as to keep the front windshield of the automobile clean.

Disclosure of Invention

The utility model aims to provide a PTC heating air window defroster to solve the problem of air window frost in winter, and the PTC defrosting air window defroster has the advantages of no need of complex temperature control elements due to the self constant temperature characteristic of PTC, cost reduction, small volume, portability, convenience in use, safety, reliability, long service life, strong reusability and suitability for mass production.

The purpose of the utility model is realized by the following technical scheme, which is combined with the attached drawings:

a PTC heating air window defroster comprises a handheld main body 5 and a defrosting circuit, wherein a handheld main body handheld groove 7 is formed in the handheld main body 5, so that a handle is formed at the top of the handheld main body 5; the bottom of the handheld main body 5 is provided with a PTC heating end surface 4; the bottom of the handheld main body 5 can be detachably connected with a scraping piece 6, and the scraping piece 6 is positioned on the side of the PTC heating end surface 4; the rear end face of the handheld main body 5 is provided with a switch 2, and the switch 2 is electrically connected with the defrosting circuit.

Further, still be equipped with the mouth that charges on the handheld 5 rear end faces of main part, install charging flap 3 on the mouth that charges.

Further, the top of the handheld main body 5 is provided with an indicator lamp 1, and the indicator lamp 1 is electrically connected with the defrosting circuit.

Further, the defrosting circuit comprises a PTC thermistor 8, a rechargeable power supply 9 and a resistor 10, wherein the PTC thermistor 8 and the rechargeable power supply 9 are connected with the switch 2 in series to form a loop, and the resistor 10 is connected with the PTC thermistor 8 in parallel as a branch.

Further, the PTC thermistor 8 is disposed on the PTC heating end face.

Further, an indicator light 1 is further arranged on the resistance branch.

The utility model has the following advantages:

the PTC heating scheme is adopted, so that the phenomenon of reddening on the surface of an electric heating tube heater can not be generated under any application condition, and potential safety hazards such as scalding, fire and the like are caused. The constant temperature heating characteristic of the PTC thermistor for heating is determined by the material characteristics. The principle is that after the PTC thermistor is electrified, the PTC thermistor can self-heat to cause the temperature of the element body to rise, the resistance value enters a jump zone, the current rapidly drops, and then the surface temperature of the PTC thermistor is heated to continuously maintain a constant value. The temperature is related only to the curie temperature and the applied voltage of the PTC thermistor, and is substantially independent of the ambient temperature. Moreover, the PTC heater has the advantages of heating, no open fire, high heat conversion rate, extremely small influence by power supply voltage, long natural service life and the like which cannot be compared with the traditional heating element, and meanwhile, the scheme does not need a complex temperature control unit.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a front view of a PTC heating window defroster of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a circuit diagram of a PTC heating window defroster of the present invention;

in the figure:

1-source indicator light; 2-a switch; 3-charging port cover; 4-PTC heating end face; 5-a handheld body; 6-scraping the blade; 7-holding the groove by hand; 8-PTC thermistors; 9-rechargeable power supply; 10-resistance.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Examples

As shown in fig. 1, a PTC heating air window defroster comprises a handheld main body 5 and a defrosting circuit, wherein an indicator lamp 1 is installed at the top of the handheld main body 5; the rear end face of the handheld main body 5 is provided with a switch 2 and a charging port; a charging port cover 3 is arranged on the charging port; the handheld body 5 is provided with a handheld body handheld groove 7, so that a handle is formed at the top of the handheld body 5 and is used for being held by an operator; the bottom of the handheld main body 5 is provided with a PTC heating end surface 4; the bottom of the handheld main body 5 can be detachably connected with a scraping piece 6, and the scraping piece 6 is positioned on the side of the PTC heating end surface 4; the switch 2 and the indicator light 1 are respectively electrically connected with the defrosting circuit. When the handheld main body is moved, the PTC heating end face 4 heats and melts the wind ice or frost of the automobile, and then the scraping piece 6 scrapes off the melted ice and water completely.

The working principle of the utility model is as follows:

when the windscreen wiper is used, the handheld main body is held by a hand, the switch is turned on, the indicating lamp is turned on, the PTC heating end face is used in the rear direction of the front wiper blade, the defroster is moved on frosted windscreen glass randomly, the air window is heated by the PTC heating end face in the front to melt frost, and then the wiper blade scrapes water at the rear simultaneously. The operation is convenient. After the use is finished, the switch is turned off, the indicator light is turned off, and the indicator light can be charged.

As shown in fig. 2, the defrosting circuit comprises a PTC thermistor 8, a rechargeable power supply 9 and a resistor 10, the PTC thermistor 8 is arranged on the PTC heating end face, the PTC thermistor 8, the rechargeable power supply 9 and the switch 2 form a loop, and the resistor 10 is connected in series with the indicator lamp 1 and then connected in parallel with the PTC thermistor 8. When the air window defrosting device works, the power supply is turned on, the indicating lamp is turned on, and the PTC heats to melt and defrost the ice and frost of the air window glass.

The utility model adopts the PTC heating scheme, and the PTC thermistor for heating has the characteristics of constant temperature heating, no open fire, high heat conversion rate, little influence by power supply voltage, long natural service life and the like which are incomparable with the traditional heating element.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The PTC heating air window defroster is characterized by comprising a handheld main body (5) and a defrosting circuit, wherein the handheld main body (5) is provided with a handheld main body handheld groove (7) so that a handle is formed at the top of the handheld main body (5); the bottom of the handheld main body (5) is provided with a PTC heating end surface (4); the bottom of the handheld main body (5) can be detachably connected with a scraping piece (6), and the scraping piece (6) is positioned on the side of the PTC heating end surface (4); the rear end face of the handheld main body (5) is provided with a switch (2), and the switch (2) is electrically connected with the defrosting circuit.

2. A PTC heating air window defroster according to claim 1 wherein a charging port is further provided on a rear end surface of the hand-held body (5), and a charging port cover (3) is installed on the charging port.

3. A PTC heating air window defroster according to claim 1 wherein an indicator light (1) is mounted on the top of the hand-held body (5), and the indicator light (1) is electrically connected to the defrosting circuit.

4. A PTC heated air window defroster according to claim 1 wherein the defrost circuit comprises a PTC thermistor (8), a rechargeable power supply (9), and a resistor (10), the PTC thermistor (8) and the rechargeable power supply (9) being connected in series with the switch (2) to form a circuit, the resistor (10) being connected as a branch in parallel with the PTC thermistor (8).

5. A PTC heated window defroster according to claim 4 wherein said PTC thermistor (8) is arranged on said PTC heated end face.

6. A PTC heated air window defroster according to claim 4 wherein an indicator light (1) is provided in said resistance branch.