CN219021003U

CN219021003U - Heating rod, steam generating device and floor washing machine

Info

Publication number: CN219021003U
Application number: CN202222203964.9U
Authority: CN
Inventors: 胡勇; 王继良
Original assignee: Suzhou Youmashi New Material Technology Co ltd
Current assignee: Suzhou Youmashi New Material Technology Co ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-05-16
Anticipated expiration: 2032-08-22

Abstract

Heating rod, steam generation device and floor scrubber, wherein, the heating rod includes: a core rod; the working end of the thermocouple is fixedly arranged in the core rod, and the free end of the thermocouple extends out of the core rod; the electric heating wire is wound on the periphery of the core rod and is connected with an external power supply through an electric heating wire lead; the sleeve is sleeved on the core rod and is connected with the two ends of the core rod in a sealing way, and an insulating layer is filled in an annular cavity formed between the sleeve and the core rod. According to the heating rod, the steam generating device and the floor washing machine, the slot is arranged at the head end of the core rod, and the built-in thermocouple is extruded and positioned by matching with the inserting piece, so that the problem that the measured temperature and the actual temperature are deviated due to non-uniform mounting positions of the built-in thermocouple is avoided, and the structure improves the yield of products.

Description

Heating rod, steam generating device and floor washing machine

Technical Field

The utility model relates to the field of household appliances, in particular to a heating rod, a steam generating device and a floor washing machine.

Background

The working principle of the steam floor washing machine is that the oil stain particles on the surface to be cleaned are dissolved and vaporized by the saturated steam under the action of high temperature and high pressure through steam washing, so that the surface cleaned by the saturated steam can reach an ultra-clean state, meanwhile, the supersaturated steam can effectively cut into any tiny holes and cracks, remove stains and residues in the holes and cracks, and clean the stains through rotation of a floor washing disc.

The heating rod is a core component of a steam generating device arranged in the steam floor washing machine. The inventors found that the position of the built-in thermocouple has a large influence on the measured temperature of the heating rod when studying the relationship between the measured temperature of the built-in thermocouple and the actual temperature of the surface of the heating rod.

At present, in order to conveniently install a thermocouple with a U-shaped structure, two temperature measuring holes extending inwards along an axis are arranged at the tail end of a core rod, a slot communicated with the two temperature measuring holes is arranged at the head end of the core rod, then the free end of the thermocouple is inserted into the two temperature measuring holes from the head end of the core rod, and then the free end of the thermocouple extends out of the tail end of the core rod. According to the scheme, although the difficult problem of difficulty in installation of the thermocouple is solved, the position of the working end of the thermocouple in the core rod cannot be accurately controlled, so that the deviation between the measured temperature and the actual temperature is large, and the qualification rate of the thermocouple is affected.

Therefore, in order to solve the above-mentioned problems, it is necessary to design a heating rod, a steam generating device and a floor washer.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide a heating rod, a steam generating device and a floor washing machine.

To achieve the above and other related objects, the present utility model provides the following technical solutions: a heating rod comprising:

a core rod;

the working end of the thermocouple is fixedly arranged in the core rod, and the free end of the thermocouple extends out of the core rod;

the electric heating wire is wound on the periphery of the core rod and is connected with an external power supply through an electric heating wire lead;

the sleeve is sleeved on the core rod and is in sealing connection with two ends of the core rod, and an annular cavity formed between the sleeve and the core rod is filled with an insulating layer.

The preferable technical scheme is as follows: the tail end of the core rod is inwards provided with two temperature measuring holes which are arranged along the axis, the head end of the core rod is inwards provided with slots which are communicated with the two temperature measuring holes, and the slots are internally provided with inserting sheets.

The preferable technical scheme is as follows: the thermocouple is a K-type thermocouple; the working end of the thermocouple is in a U-shaped structure and is arranged in the temperature measuring hole and the slot and is fixed by extrusion positioning of the inserting piece.

The preferable technical scheme is as follows: the inserting sheet is made of mica sheets; the inserting end of the inserting piece is of an isosceles triangle groove structure with the middle low and the two sides high, and the bottom of the slot is matched with the inserting end of the inserting piece in shape.

The preferable technical scheme is as follows: the core rod is internally provided with two heating wire guide wire holes penetrating through the head end and the tail end along the axis, and the heating wire guide wires are inserted into the heating wire guide wire holes; the electric heating wires are spirally wound on the periphery of the core rod, and two ends of each electric heating wire are respectively inserted into the two electric heating wire guide holes and are electrically connected with the electric heating wire guide wires.

The preferable technical scheme is as follows: the top end of the core rod is provided with a top bracket, and the bottom end of the core rod is provided with a bottom bracket; the top support with the bottom support structure is the same and is the cylinder structure, the top support with the external diameter of bottom support all with the internal diameter of cover pipe matches, the bottom of top support be equipped with two with the counter bore that the heating wire hole corresponds, be equipped with two in the bottom support and arrange along the axis and supply the through-hole that the heating wire runs through.

The preferable technical scheme is as follows: the core rod, the bottom support and the top support are all made of magnesium oxide, and the insulating layer is made of magnesium oxide powder.

The preferable technical scheme is as follows: the two ends of the sleeve are respectively connected with the top bracket and the bottom bracket in a sealing way, and the tail end of the sleeve is fixedly provided with a flange; the sleeve and the flange are both made of stainless steel.

The steam generating device comprises a shell and the heating rod, wherein the shell is of a sealed barrel-shaped structure, the heating rod is coaxially arranged in the shell, and a water inlet joint and a steam joint which are communicated with the inside of the shell are arranged on the shell.

A floor scrubber comprising a steam generating device as described above.

Due to the application of the technical scheme, the utility model has the following beneficial effects:

according to the heating rod, the steam generating device and the floor washing machine, the slot is arranged at the head end of the core rod, and the built-in thermocouple is extruded and positioned by matching with the inserting piece, so that the problem that the measured temperature and the actual temperature are deviated due to non-uniform mounting positions of the built-in thermocouple is avoided, and the structure improves the yield of products.

Drawings

FIG. 1 is a schematic view of a heating rod according to the present utility model.

FIG. 2 is an exploded view of a heater rod according to the present utility model.

FIG. 3 is a schematic view of the core rod of the present utility model.

FIG. 4 is a first perspective cross-sectional view of the mandrel of the present utility model.

FIG. 5 is a second perspective cross-sectional view of the mandrel of the present utility model.

Fig. 6 is a cross-sectional view of the steam generating device of the present utility model.

In the drawings, 1, a core rod; 101. a temperature measuring hole; 102. a slot; 103. wire holes of the heating wire; 104. a avoidance port; 2. a thermocouple; 3. heating wires; 4. a wire of the heating wire; 5. a sleeve; 6. an insulating layer; 7. inserting sheets; 8. a top bracket; 9. a bottom bracket; 10. a flange; 11. a housing; 1101. a water inlet joint; 1102. a steam joint.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

Please refer to fig. 1-6. It should be noted that, in the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," "overhang," and the like do not denote that the component is required to be absolutely horizontal or overhang, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or communicating between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples:

as shown in fig. 1 to 5, a heating rod according to the present utility model includes:

the core rod 1, the tail end of the core rod 1 is provided with two temperature measuring holes 101 which are inwards arranged along the axis direction and are arranged in a central symmetry manner, the center of the head end of the core rod 1 is provided with an inwards arranged slot 102, and the slot 102 is communicated with the two temperature measuring holes 101.

The thermocouple 2 is a K-type thermocouple with a U-shaped structure, the working end of the thermocouple 2 is fixedly arranged in the core rod 1, and the free end of the thermocouple 2 extends out of the core rod 1; during assembly, the free end of the thermocouple 2 is inserted into the head end slot 102 of the core rod 1, and extends out of the tail end of the core rod 1 through the two temperature measuring holes 101; then, the insert 7 is inserted into the slot 102 to press the bending part of the thermocouple 2 to realize positioning and fixing.

The heating wire 3 is spirally wound on the periphery of the core rod 1 and is connected with an external power supply through a heating wire lead 4; specifically, two heating wire holes 103 penetrating through the two ends of the head and the tail along the axis are further formed in the core rod 1, and the heating wire wires 4 are inserted into the heating wire holes 103 (the two heating wire holes 103 and the two temperature measuring holes 101 are orthogonally distributed, so that when the inserting sheet 7 is inserted into the slot 102, the two heating wire wires 4 are separated; the heating wire 3 is spirally wound on the periphery of the core rod 1, and two ends of the heating wire 3 are respectively inserted into the two heating wire holes 103 and are electrically connected with the heating wire wires 4.

It should be noted that, the head end of the mandrel 1 is provided with a avoiding port 104 which is communicated with one of the wire guide holes 103, and the tail end of the mandrel 1 is provided with a avoiding port 104 which is communicated with the other wire guide hole 103. The clearance holes 104 can be embedded into the two ends of the heating wire 3, so that the heating wire 3 can be prevented from protruding out of the end part of the core rod 1 to interfere the assembly of other components.

The sleeve 5 is sleeved on the core rod 1 and is in sealing connection with two ends of the core rod 1 (water inflow is prevented), an annular cavity formed between the sleeve 5 and the core rod 1 is filled with an insulating layer 6, and the insulating layer 6 can prevent the electric heating wire 3 from contacting with the sleeve 5.

Further, the inserting end of the inserting piece 7 is of an isosceles triangle groove structure with the middle low and the two high sides, and the groove bottom of the inserting groove 102 is matched with the inserting end of the inserting piece 7 in shape. The thermocouple 2 is generally formed by welding two conductors of different materials, and when the welding is of a U-shaped structure, the welding part is a bending part of the U-shaped structure. By adopting the structures of the inserting piece 7 and the inserting groove 102, the shape of the welding part of the thermocouple 2 is matched, so that the thermocouple 2 can not be damaged while the extrusion positioning is convenient.

Further, the top end of the core rod 1 is provided with a top bracket 8, and the bottom end of the core rod 1 is provided with a bottom bracket 9; the top support 8 and the bottom support 9 are identical in structure and are both cylindrical in structure. The external diameter of top support 8 and bottom support 9 all matches with sleeve pipe 5's internal diameter, and the bottom of top support 8 is equipped with two counter bores that correspond with heating wire guide 103, is equipped with two through-holes that arrange and power supply wire 4 run through along the axis in the bottom support 9. The top bracket 8 and the bottom bracket 9 are used for positioning the position of the mandrel 1 in the sleeve 5 (specifically, when in assembly, the heating wire lead 4 sequentially passes through the through hole in the bottom bracket 9 and the heating wire lead hole 103 until being inserted into the counter bore at the bottom end of the top bracket 8, so that the three are positioned), so as to ensure that the mandrel 1 and the sleeve 5 are coaxially arranged and ensure that the heating is uniform.

Furthermore, the core rod 1, the bottom bracket 9 and the top bracket 8 are all made of magnesium oxide, and the insulating layer 6 is made of magnesium oxide powder, so that the insulating layer has good insulating property and high temperature resistance.

Further, the head end and the tail end of the sleeve 5 are respectively connected with the top bracket 8 and the bottom bracket 9 in a sealing way, and the tail end of the sleeve 5 is fixedly provided with a flange 10; the sleeve 5 and the flange 10 are both made of stainless steel. The flange 10 is intended to be fixedly mounted with a housing 11 in the steam generating device.

As shown in fig. 6, the present application further relates to a steam generating device, which comprises a housing 11, and further comprises the heating rod, wherein the housing 11 is of a sealed barrel-shaped structure, the heating rod is coaxially arranged in the housing 11, and a water inlet connector 1101 and a steam connector 1102 which are communicated with the inside of the housing are arranged on the housing 11. In use, water enters the housing 11 through the water inlet connector 1101 and is heated by the heating rod to generate steam which is then discharged from the steam connector 1102.

The application also relates to a floor washing machine comprising the steam generating device.

In addition, it should be noted that the heating rod in the application can adopt direct current or alternating current power supply, and a power supply mode can be selected according to actual use requirements.

Therefore, the utility model has the following advantages:

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations which can be accomplished by persons skilled in the art without departing from the spirit and technical spirit of the present utility model shall be covered by the appended claims.

Claims

1. A heating rod, comprising:

a mandrel (1);

the working end of the thermocouple (2) is fixedly arranged in the core rod (1), and the free end of the thermocouple (2) extends out of the core rod (1);

the heating wire (3) is wound on the periphery of the core rod (1) and is connected with an external power supply through a heating wire lead (4);

the sleeve (5) is sleeved on the core rod (1) and is in sealing connection with two ends of the core rod (1), and an insulating layer (6) is filled in an annular cavity formed between the sleeve (5) and the core rod (1).

2. A heating rod as defined in claim 1, wherein: the tail end of the core rod (1) is inwards provided with two temperature measuring holes (101) which are arranged along the axis, the head end of the core rod (1) is inwards provided with slots (102) which are communicated with the two temperature measuring holes, and the slots (102) are internally provided with inserting pieces (7).

3. A heating rod as defined in claim 2, wherein: the thermocouple (2) is a K-type thermocouple; the working end of the thermocouple (2) is in a U-shaped structure, is arranged in the temperature measuring hole (101) and the slot (102), and is positioned and fixed by extrusion of the inserting piece (7).

4. A heating rod as defined in claim 2, wherein: the inserting sheet (7) is made of mica sheets; the inserting end of the inserting piece (7) is of an isosceles triangle groove structure with the middle low and the two sides high, and the groove bottom of the inserting groove (102) is matched with the inserting end of the inserting piece (7) in shape.

5. A heating rod as defined in claim 1, wherein: the core rod (1) is also provided with two heating wire guide holes (104) penetrating through the head end and the tail end along the axis, and the heating wire guide wires (4) are inserted into the heating wire guide holes (104); the electric heating wires (3) are spirally wound on the periphery of the core rod (1), and two ends of each electric heating wire (3) are respectively inserted into two electric heating wire holes (104) and are electrically connected with the electric heating wire wires (4).

6. A heating rod as defined in claim 5, wherein: the top end of the core rod (1) is provided with a top bracket (8), and the bottom end of the core rod (1) is provided with a bottom bracket (9); the top support (8) and the bottom support (9) are identical in structure and are of cylindrical structures, the outer diameters of the top support and the bottom support are matched with the inner diameter of the sleeve, two counter bores corresponding to the electric heating wire guide holes (104) are formed in the bottom end of the top support, and two through holes which are arranged along the axis and used for the electric heating wire guide wires (4) to penetrate are formed in the bottom support.

7. A heating rod as defined in claim 6, wherein: the core rod (1), the bottom bracket (9) and the top bracket (8) are all made of magnesium oxide, and the insulating layer (6) is made of magnesium oxide powder.

8. A heating rod as defined in claim 6, wherein: the two ends of the sleeve (5) are respectively connected with the top bracket (8) and the bottom bracket (9) in a sealing way, and the tail end of the sleeve (5) is also fixedly provided with a flange (10); the sleeve (5) and the flange (10) are both made of stainless steel.

9. A steam generating device comprising a housing (11), characterized in that: the heating rod according to any one of claims 1 to 8, wherein the shell (11) is of a sealed barrel-shaped structure, the heating rod is coaxially arranged in the shell (11), and a water inlet joint (1101) and a steam joint (1102) which are communicated with the inside of the shell are arranged on the shell (11).

10. The utility model provides a floor washing machine which characterized in that: comprising a steam generating device according to claim 9.