Dishwasher heating plate and processing technology thereof

Abstract

The present invention relates to a dishwasher heating plate and a processing technology thereof, comprising a stainless steel substrate, and also comprising an insulating layer solidified on the stainless steel substrate by high-temperature sintering, the insulating layer being coated with three groups of arc-shaped heating areas, a group of strip-shaped heating areas being distributed between at least any two adjacent arc-shaped heating areas in the three groups of arc-shaped heating areas, and the arc-shaped heating areas and the strip-shaped heating areas being coated with a protective layer. The present invention enables the stainless steel substrate to have a better heat distribution through the arc-shaped heating areas and the strip-shaped heating areas, so as to facilitate better absorption and use of heat and achieve a high heat utilization rate. The present invention enhances the matching of the materials by coating a corresponding insulating layer on the stainless steel substrate, making it less prone to cracking and falling off, thereby extending the service life of the heating plate.

Description

Technical Field

[0001] The invention relates to the field of processing and manufacturing of heating plates, in particular to a heating plate of a dishwasher and a processing technology thereof. Background Art

[0002] With the improvement of living standards, various new home appliances have entered thousands of households. Traditional heating plates use electric heating tubes for heating, with poor structural bonding, slow heat transfer effect, low thermal conductivity, and uneven heat distribution. Traditional heating plates have too thick heat conduction media, poor thermal conductivity, and a large temperature deviation between the place where the heat is generated and the place where it is used, large thermal inertia, and low utilization rate. At the same time, the bonding of multiple layers of different materials in traditional heating plates is prone to cracking, affecting the service life. Therefore, a dishwasher heating plate and processing technology are needed to solve the above problems. Summary of the invention

[0003] In order to solve the above technical problems, the present invention proposes a dishwasher heating plate and a processing technology thereof. The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0004] A dishwasher heating plate comprises a stainless steel substrate and an insulating layer solidified on the stainless steel substrate by high-temperature sintering, wherein three groups of arc-shaped heating areas are coated on the insulating layer, a group of strip-shaped heating areas is distributed between at least any two adjacent arc-shaped heating areas in the three groups of arc-shaped heating areas, and the arc-shaped heating areas and the strip-shaped heating areas are both coated with a protective layer.

[0005] The arc-shaped heating zone is composed of a plurality of arc-shaped heating resistors distributed concentrically with the stainless steel substrate, and the strip-shaped heating zone is composed of a plurality of strip-shaped heating resistors distributed along the radial direction of the stainless steel substrate.

[0006] The input end of any arc heating zone is connected to a conductor layer, the output end of the arc heating zone is connected to an arc resistor distributed around the inner circle of the stainless steel substrate and connected to the input end of the strip heating zone, and the output end of the strip heating zone is connected to a conductor layer.

[0007] The insulating layer, the arc-shaped heating area, the strip-shaped heating area and the protective layer are all made of rare earth materials.

[0008] A processing technology for a dishwasher heating plate includes the following steps:

[0009] Step 1: Select a stainless steel disc with a thickness of 1.2 mm as the substrate and clean and remove dust from it;

[0010] Step 2: Print and coat the insulating material on the substrate 4 to 6 times to form an insulating layer to play an insulating role;

[0011] Step 3: Print and coat a layer of rare earth material on the insulating material to form an arc-shaped heating area and a strip-shaped heating area;

[0012] Step 4: Print and coat good conductors connected to an external power source at both ends of the heating material to form a conductor layer connected to an external power source;

[0013] Step 5: Print a protective layer coated with a protective resistor on the heating resistor.

[0014] The insulating layer, the heating layer, the conductor layer and the protective layer are all cured by high-temperature sintering.

[0015] The beneficial effects of the present invention are as follows: the present invention changes the previous electric heating tube heating to the rare earth element thick film heating, and the structure of the original functional components is reduced;

[0016] The present invention enables the stainless steel substrate to have better heat distribution through the arc-shaped heating area and the strip-shaped heating area, so as to better absorb and utilize the heat and achieve high heat utilization rate.

[0017] The invention enhances the matching of materials by coating a corresponding insulating layer on a stainless steel substrate, which makes the heating plate less likely to crack and fall off, thereby extending the service life of the heating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 A top view of the present invention;

[0020] Figure 2 It is a schematic diagram of the top view structure of the present invention;

[0021] Figure 3 For the present invention Figure 1 Schematic diagram of the cross-sectional structure of AA. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be explained more clearly and completely below in conjunction with the drawings in the embodiments. Of course, the described embodiments are only a part of the present invention but not all of it. Based on this embodiment, other embodiments obtained by those skilled in the art without creative labor are all within the protection scope of the present invention.

[0023] like Figures 1 to 3As shown, a dishwasher heating plate comprises a stainless steel substrate 1, and also comprises an insulating layer 2 which is solidified on the stainless steel substrate 1 by high-temperature sintering, the insulating layer 2 is coated with three groups of arc-shaped heating areas 3, a group of strip-shaped heating areas 4 is distributed between at least any two adjacent arc-shaped heating areas 3 in the three groups of arc-shaped heating areas 3, the arc-shaped heating areas 3 and the strip-shaped heating areas 4 are coated with a protective layer 5; the protective layer 5 prevents the arc-shaped heating areas 3 and the strip-shaped heating areas 4 from being easily scratched by the outside, and at the same time plays an insulating role; a water pipe installation hole 1a is provided in the middle of the stainless steel substrate 1, the water pipe installation hole 1a is provided with a flange 1b in the circumferential direction, and a water pipe 8 for guiding water flow is mounted on the flange 1b.

[0024] The arc heating zone is composed of a plurality of arc heating resistors distributed concentrically with the stainless steel substrate 1, and the strip heating zone 4 is composed of a plurality of strip heating resistors distributed along the radial direction of the stainless steel substrate 1; the arc heating resistors and the strip heating resistors are connected end to end in sequence through conductors.

[0025] The input end of any arc-shaped heating zone 3 is connected to a conductor layer 6, the output end of the arc-shaped heating zone 3 is connected to an arc-shaped resistor 7 distributed around the inner circle of the stainless steel substrate 1 and connected to the input end of the strip-shaped heating zone 4, the output end of the strip-shaped heating zone 4 is connected to a conductor layer 6, and the conductor layer 6 is connected to an external power supply.

[0026] The insulating layer 2, arc-shaped heating area 3, strip-shaped heating area 4 and protective layer 5 are all made of rare earth materials; the rare earth material of the insulating layer is ESL4924, the rare earth material of the arc-shaped heating area 3 and the strip-shaped heating area 4 is ESL29215, and the rare earth material of the conductor layer 6 is 9912-KFL; the material of the stainless steel substrate 1 is SUS430 or SUS444 or SUS445.

[0027] A processing technology for a dishwasher heating plate includes the following steps:

[0028] Step 1: Select a stainless steel disc with a thickness of 1.2 mm as the substrate and clean and remove dust from it;

[0029] Step 2: Print and coat the insulating material on the substrate 4 to 6 times to form an insulating layer to play an insulating role;

[0030] Step 3: Print and coat a layer of rare earth material on the insulating material to form an arc-shaped heating area and a strip-shaped heating area; the arc-shaped resistor is also made of rare earth material;

[0031] Step 4: Print and coat good conductors connected to an external power source at both ends of the heating material to form a conductor layer connected to an external power source;

[0032] Step 5: Print a protective layer coated with a protective resistor on the heating resistor.

[0033] The insulating layer, the heating layer, the conductor layer and the protective layer are all cured by high-temperature sintering.

[0034] The insulating layer is preferably coated on the stainless steel substrate to reduce the arc-shaped heating area and the strip-shaped heating area from forming a conductive path with the substrate during use.

[0035] The insulating layer is coated 4 to 6 times to ensure pressure resistance and increase service life. The corresponding coating times can be determined according to different usage scenarios.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dishwasher heating plate, and a processing technology of a dishwasher heating plate, comprising the following steps: Step 1: Select a stainless steel disc with a thickness of 1.2 mm as the substrate and clean and remove dust from it; Step 2: Print and coat the insulating material on the substrate 4 to 6 times to form an insulating layer to play an insulating role; Step 3: Print and coat a layer of rare earth material on the insulating material to form an arc-shaped heating area and a strip-shaped heating area; Step 4: Print and coat good conductors connected to an external power source at both ends of the heating material to form a conductor layer connected to an external power source; Step 5: Printing a protective layer coated with a protective resistor on the heating resistor; The dishwasher heating plate comprises a stainless steel substrate (1), characterized in that it also comprises an insulating layer (2) which is solidified on the stainless steel substrate (1) by high-temperature sintering, the insulating layer (2) is coated with three groups of arc-shaped heating areas (3), a group of strip-shaped heating areas (4) is distributed between at least any two adjacent arc-shaped heating areas (3) in the three groups of arc-shaped heating areas (3), and the arc-shaped heating areas (3) and the strip-shaped heating areas (4) are both coated with a protective layer (5); The arc-shaped heating zone is composed of a plurality of arc-shaped heating resistors distributed concentrically with the stainless steel substrate (1), and the strip-shaped heating zone (4) is composed of a plurality of strip-shaped heating resistors distributed along the radial direction of the stainless steel substrate (1); The input end of any arc-shaped heating zone (3) is connected to a conductor layer (6), the output end of the arc-shaped heating zone (3) is connected to an arc-shaped resistor (7) distributed around the inner circle of the stainless steel substrate (1) and connected to the input end of the strip-shaped heating zone (4), and the output end of the strip-shaped heating zone (4) is connected to the conductor layer (6); A water pipe installation hole (1a) is provided in the middle of the stainless steel base (1), a flange (1b) is provided around the water pipe installation hole (1a), and a water pipe (8) for guiding water flow is mounted on the flange (1b).

2. A dishwasher heating plate according to claim 1, characterized in that: The insulating layer (2), the arc-shaped heating area (3), the strip-shaped heating area (4) and the protective layer (5) are all made of rare earth materials.

3. The processing technology of the dishwasher heating plate according to claim 1, characterized in that: The insulating layer, the heating area, the conductor layer and the protective layer are all solidified by high-temperature sintering.

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