CN210394877U

CN210394877U - Dry burning prevention heater

Info

Publication number: CN210394877U
Application number: CN201921055609.3U
Authority: CN
Inventors: 汪洋; 李国春
Original assignee: Anhui Ningguo Tiancheng Electrical Appliances Co ltd
Current assignee: Anhui Ningguo Tiancheng Electrical Appliances Co ltd
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-04-24
Anticipated expiration: 2029-07-08

Abstract

The utility model discloses an anti-dry heating heater, which comprises a control box, a high temperature resistant floating ball and a U-shaped heating rod, the right side of the bottom end surface of the inner cavity of the control box is provided with a PCB circuit board, the center of the bottom end surface of the inner cavity of the control box is embedded with a miniature laser ranging sensor, two stainless steel hollow sleeves are fixedly inserted into the bottom end surface of the control box, the top ends of the U-shaped heating rods are respectively connected with the bottom end surfaces of the two stainless steel hollow sleeves, the high temperature resistant floating ball is slidably clamped in a clamping gap inner cavity between the two stainless steel enclosing plates, the upper end surface of the PCB is respectively connected with a positive connecting post and a negative connecting post, the left side of the top end surface of the PCB is vertically provided with a hinge bracket, the top of articulated frame articulates there is the articulated arm that can the horizontal hunting, the top face of PCB circuit board is equipped with the electro-magnet, the iron plate just matches with the electro-magnet. The utility model discloses can prevent that the heater from burning futilely, prolong the life of heater, simple and practical.

Description

Dry burning prevention heater

Technical Field

The utility model relates to a washing machine heater correlation technique field specifically is a prevent dry combustion method heater.

Background

The heater is generally applied to industrial production and daily life of people, warm water washing becomes more choices for people when the heater is used in a household washing machine, however, a water supply stop condition may occur during water supply and heating, so that the danger of short circuit or fire disaster of dry heating of the heater can be caused, and how to avoid the accidents, the dry heating preventing heater is designed and produced, so that the problems are solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent dry combustion method heater to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: a dry burning prevention heater comprises a control box, a high temperature resistant floating ball and a U-shaped heating rod, wherein the inner cavity of the control box is of a hollow structure and is a PV transparent plastic shell, a PCB circuit board is arranged on the right side of the bottom end face of the inner cavity of the control box, a micro laser ranging sensor is embedded in the center of the bottom end face of the inner cavity of the control box and is flush with the bottom end face of the control box, two stainless steel hollow sleeves are fixedly inserted into the bottom end face of the control box, the top end of the U-shaped heating rod is respectively connected with the bottom end faces of the two stainless steel hollow sleeves, stainless steel surrounding plates are arranged on opposite side walls of the two stainless steel hollow sleeves, a clamping gap is arranged between the two stainless steel surrounding plates, the high temperature resistant floating ball is slidably clamped in the clamping gap inner cavity between the two stainless steel surrounding plates, and a signal output port of the micro laser ranging sensor is, and is opposite to the ball center of the high-temperature resistant floating ball up and down, the upper end surface of the PCB is respectively connected with a positive connecting post and a negative connecting post, a hinge frame is vertically arranged on the left side of the top end surface of the PCB, a hinge rod capable of swinging left and right is hinged at the top end of the hinge frame, the left side of the top end surface of the hinged rod is provided with a balancing weight, the right side of the hinged rod is respectively inserted with a positive terminal and a negative terminal which are positioned on the right side of the hinged point, the positive terminal and the negative terminal are respectively matched and opposite to the positive connecting column and the negative connecting column, an iron block is arranged on the right side of the bottom end face of the hinged rod, an electromagnet is arranged on the top end face of the PCB, the electromagnet is connected with the PCB circuit board through a lead, the iron block is matched and right opposite to the electromagnet, the positive and negative poles of the U-shaped heating rod are connected with the PCB through leads, and the PCB is externally connected with a standby storage battery.

Preferably, the high-temperature-resistant floating ball is made of PPSU plastic.

Preferably, the two stainless steel enclosing plates are of a quarter-circle structure, and the ball diameter of the high-temperature resistant floating ball is 3mm smaller than the gap between the two stainless steel enclosing plates.

Preferably, a stainless steel supporting plate positioned below the high-temperature-resistant floating ball is horizontally arranged at the bottom of the side wall between the two stainless steel enclosing plates.

Preferably, the signal output port of the PCB circuit board is connected with an LED display lamp, and the LED display lamp is embedded in the top end face of the control box.

Preferably, the positive terminal and the negative terminal are externally connected with connecting wires, and the connecting wires penetrate through the top end face of the control box.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model relates to a prevent dry combustion method heater, in case washing machine cuts off the water supply, the liquid level is less than miniature laser rangefinder sensor and predetermines the height, then break off electromagnet circuit, make the hinge bar receive the action of gravity of balancing weight around articulated frame anticlockwise rotation, make positive terminal and negative terminal separate with positive spliced pole and negative terminal respectively, break off whole circuit fast, make U type heating rod can't continue to heat, prevent that U type heating rod from continuing to burn futilely, can prevent promptly that the heater from burning futilely taking place the danger of short circuit or conflagration, strengthen the electrical safety performance, the life of extension heater, and is simple and practical.

2. The utility model discloses, through adopting PV transparent plastic shell with the control box, can play insulating effect, the miniature laser ranging sensor's of being convenient for response laser again passes control box bottom end face to the vertical height of response high temperature resistant floater apart from miniature laser ranging sensor.

3. The utility model discloses, through setting up the stainless steel planker to prevent that the high temperature resistant floater breaks away from the clearance between two stainless steel bounding walls, influence miniature laser rangefinder sensor's the detection accuracy, through setting up the LED display lamp, the signal user U type heating rod of being convenient for is in heating state.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a sectional view of the internal structure of the embodiment of the present invention;

fig. 3 is an enlarged view of a structure at a in fig. 2 according to an embodiment of the present invention;

fig. 4 is a functional block diagram of an embodiment of the present invention.

In the figure: 1. a control box; 2. an LED display lamp; 3. a stainless steel support plate; 4. a U-shaped heating rod; 5. a high temperature resistant floating ball; 6. a stainless steel hollow sleeve; 7. stainless steel coaming; 8. connecting a lead; 9. a miniature laser ranging sensor; 10. a PCB circuit board; 11. a positive terminal; 12. a balancing weight; 13. a hinged lever; 14. a hinged frame; 15. a positive connecting column; 16. a negative connecting column; 17. an electromagnet; 18. an iron block; 19. and a negative terminal.

Detailed Description

In order to facilitate the use, the embodiment of the utility model provides a prevent dry combustion method heater. The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-4, the embodiment provides an anti-dry heating device, which includes a control box 1, a high temperature resistant floating ball 5 and a U-shaped heating rod 4, wherein an inner cavity of the control box 1 is a hollow structure and is a PV transparent plastic shell, a PCB 10 is disposed on the right side of the bottom end face of the inner cavity of the control box 1, a micro laser ranging sensor 9 is embedded in the center of the bottom end face of the inner cavity of the control box 1 and is flush with the bottom end face of the control box 1, two stainless steel hollow sleeves 6 are fixedly inserted into the bottom end face of the control box 1, the top end of the U-shaped heating rod 4 is connected with the bottom end faces of the two stainless steel hollow sleeves 6, stainless steel surrounding plates 7 are disposed on opposite side walls of the two stainless steel hollow sleeves 6, a clamping gap is disposed between the two stainless steel surrounding plates 7, the high temperature resistant floating ball 5 is slidably clamped in the clamping gap inner cavity between the two stainless steel surrounding plates 7, a signal output, and is opposite to the sphere center of the high temperature resistant floating ball 5 up and down, the upper end surface of the PCB circuit board 10 is respectively connected with a positive connecting post 15 and a negative connecting post 16, the left side of the top end surface of the PCB circuit board 10 is vertically provided with a hinged frame 14, the top end of the hinged frame 14 is hinged with a hinged rod 13 capable of swinging left and right, the left side of the top end surface of the hinged rod 13 is provided with a balancing weight 12, the right side of the hinged rod 13 is respectively inserted with a positive terminal 11 and a negative terminal 19 which are positioned on the right side of the hinged point, the positive terminal 11 and the negative terminal 19 are respectively matched and opposite to the positive connecting post 15 and the negative connecting post 16, the right side of the bottom end surface, the electromagnet 17 is connected with the PCB 10 through a lead, the iron block 18 is opposite to the electromagnet 17 in a matching mode, the positive pole and the negative pole of the U-shaped heating rod 4 are connected with the PCB 10 through leads, and the PCB 10 is externally connected with a standby storage battery.

In the embodiment, when the device is used, the integral structure is arranged in a case of a washing machine, the bottom edge position of the control box 1 is sealed through a rubber flange, so that water overflow is avoided, water enters an inner cavity of the control box 1, the electricity safety performance is enhanced, the U-shaped heating rod 4 is arranged at a water inlet position, when water enters, the water flows through the U-shaped heating rod 4, the high-temperature-resistant floating ball 5 floats upwards under the buoyancy of the liquid level, the control box 1 adopts a PV transparent plastic shell, the insulation effect can be achieved, the induction laser of the micro laser ranging sensor 9 conveniently penetrates through the bottom end surface of the control box 1, the vertical height of the high-temperature-resistant floating ball 5 from the micro laser ranging sensor 9 is induced, an induction signal is sent to the PCB 10 for analysis and processing, once the washing machine breaks water, if the vertical distance is smaller than the preset height, the liquid level is higher than the U-, the PCB circuit board 10 is externally connected with a standby storage battery for supplying power, the electric control electromagnet 17 is provided with the electric adsorption iron block 18, the hinge rod 13 rotates clockwise around the hinge frame 14, the positive terminal 11 and the negative terminal 19 are respectively attached to the positive terminal post 15 and the negative terminal post 16 to communicate the whole circuit, the U-shaped heating rod 4 is normally heated, if the vertical height is smaller than the preset vertical height, the circuit of the electromagnet 17 can be disconnected through the PCB circuit board 10, the electromagnet 17 cannot be provided with the electric adsorption iron block 18, the hinge rod 13 rotates anticlockwise around the hinge frame 14 under the action of the gravity of the balancing weight 12, the positive terminal 11 and the negative terminal 19 are respectively separated from the positive terminal post 15 and the negative terminal post 16 to disconnect the whole circuit, the U-shaped heating rod 4 cannot be continuously heated, the U-shaped heating rod 4 is prevented from being continuously burnt, and the danger of short circuit or fire caused by the dry burning of the heater can be, strengthen the electrical safety performance, eliminate the potential safety hazard in the use, prolong the life of heater, simple and practical.

The model of the micro laser ranging sensor 9 is FSB-10, the model of the U-shaped heating rod 4 is CY-0002, the model of the PCB is SCC, and the micro laser ranging sensor can be freely selected according to actual use requirements.

Example 2

Referring to fig. 1-4, a further improvement is made on the basis of embodiment 1:

the high-temperature resistant floating ball 5 is made of PPSU plastic, the PPSU plastic is polyphenylene sulfone plastic, and the high-temperature resistant floating ball can be used at the temperature of 180 ℃ for a long time.

Two stainless steel bounding walls 7 are quarter circular structure, and the footpath of high temperature resistant floater 5 is than the little 3mm in clearance between two stainless steel bounding walls 7, sets up like this and makes and have sufficient space between two stainless steel bounding walls 7 and satisfy high temperature resistant floater 5 free floating from top to bottom.

The bottom of the side wall between the two stainless steel enclosing plates 7 is horizontally provided with a stainless steel supporting plate 3 below the high-temperature-resistant floating ball 5, and the stainless steel supporting plate 3 is arranged to prevent the high-temperature-resistant floating ball 5 from separating from the gap between the two stainless steel enclosing plates 7 and influencing the detection accuracy of the miniature laser ranging sensor 9. The signal output port of the PCB 10 is connected with the LED display lamp 2, the LED display lamp 2 is embedded in the top end face of the control box 1, and the LED display lamp 2 is arranged, so that the user U-shaped heating rod 4 can be conveniently indicated in a heating state.

The positive terminal 11 and the negative terminal 19 are externally connected with a connecting lead 8, the connecting lead 8 penetrates through the top end face of the control box 1, and the power supply of the washing machine is conveniently and externally connected through the connecting lead 8.

In the description of the present application, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent dry combustion method heater, includes control box (1), high temperature resistant floater (5) and U type heating rod (4), its characterized in that: the inner cavity of the control box (1) is of a hollow structure and is a PV (photovoltaic) transparent plastic shell, a PCB (printed circuit board) is arranged on the right side of the bottom end face of the inner cavity of the control box (1), a miniature laser ranging sensor (9) is embedded in the center of the bottom end face of the inner cavity of the control box (1) and is flush with the bottom end face of the control box (1), two stainless steel hollow casings (6) are fixedly inserted into the bottom end face of the control box (1), the top end of the U-shaped heating rod (4) is connected with the bottom end faces of the two stainless steel hollow casings (6), two stainless steel wall plates (7) are arranged on opposite side walls of each stainless steel hollow casing (6), a clamping gap is formed between the two stainless steel wall plates (7), the high-temperature resistant floating ball (5) is slidably clamped between the two stainless steel wall plates (7), and a signal output port of the miniature laser ranging sensor (9) and a signal transmission cavity of the PCB (10) The input port is connected with a ball center of the high-temperature-resistant floating ball (5) and is right opposite to the ball center, the upper end face of the PCB (10) is respectively connected with a positive connecting post (15) and a negative connecting post (16), the left side of the top end face of the PCB (10) is vertically provided with a hinged frame (14), the top end of the hinged frame (14) is hinged with a hinged rod (13) capable of swinging left and right, the left side of the top end face of the hinged rod (13) is provided with a balancing weight (12), the right side of the hinged rod (13) is respectively inserted with a positive terminal (11) and a negative terminal (19) which are positioned on the right side of the hinged point, the positive terminal (11) and the negative terminal (19) are respectively matched and right opposite to the positive connecting post (15) and the negative connecting post (16), the right side of the bottom end face of the hinged rod (13) is provided with an, and the electromagnet (17) is connected with the PCB (printed circuit board) through a lead, the iron block (18) is just right matched with the electromagnet (17), the positive and negative poles of the U-shaped heating rod (4) are connected with the PCB (printed circuit board) (10) through leads, and the PCB (printed circuit board) is externally connected with a standby storage battery.

2. The dry-heating preventing heater according to claim 1, wherein: the high-temperature resistant floating ball (5) is made of PPSU plastic.

3. The dry-heating preventing heater according to claim 1, wherein: the two stainless steel enclosing plates (7) are of a quarter-circle structure, and the diameter of the high-temperature-resistant floating ball (5) is 3mm smaller than the gap between the two stainless steel enclosing plates (7).

4. The dry-heating preventing heater according to claim 1, wherein: and a stainless steel supporting plate (3) positioned below the high-temperature resistant floating ball (5) is horizontally arranged at the bottom of the side wall between the two stainless steel enclosing plates (7).

5. The dry-heating preventing heater according to claim 1, wherein: the signal output port of the PCB (10) is connected with an LED display lamp (2), and the LED display lamp (2) is embedded in the top end face of the control box (1).

6. The dry-heating preventing heater according to claim 1, wherein: the positive terminal (11) and the negative terminal (19) are externally connected with a connecting lead (8), and the connecting lead (8) penetrates through the top end face of the control box (1).