An airtightness detection tool for a water heating element

Abstract

The utility model discloses a kind of air tightness detection tool for water heating part, including base, fixed frame is on the base, frame is installed with placement plate, the placement plate has the avoidance slot, a pair of through holes are opened in the placement plate, the through hole includes upper positioning hole and lower connecting hole, the upper positioning hole and lower connecting hole are communicated by intermediate hole, the diameter of intermediate hole is less than the diameter of upper positioning hole, the upper positioning hole is also equipped with the elastic sealing ring matched with the water inlet of water heating part, the lower connecting hole is also connected with connector, the connector is connected with air tightness checking instrument by air pipe, the placement plate is installed with a pair of L type limit seat, the upper end of L type limit seat is provided with clamping groove, detachable rubber pad is installed in the clamping groove, the base is also provided with the pressing mechanism for pressing water heating part downwards.

Description

Technical Field

[0001] This utility model belongs to the field of tooling technology and relates to a tooling for testing the airtightness of water heating components. Background Technology

[0002] A water heating element is a key component in household automatic cleaning equipment, primarily used to heat the water within the device. This device, through its built-in heating element, rapidly raises cold water to the desired temperature, thereby improving cleaning effectiveness and ensuring the equipment performs optimally during use. The design and construction of a water heating element involves several key components, the most crucial being the housing, the PTC heating element, and the electrical module. The housing not only provides external protection for the entire water heating element but also plays a vital role in securing the internal components. Two dedicated water inlets are designed at specific locations on the housing, one for water input and the other for water output, ensuring smooth water flow into and out of the heater.

[0003] Since water heating devices require both water and electricity to operate, they must possess excellent airtightness to prevent moisture from seeping into the electrical components and causing short circuits or other safety hazards. Therefore, designing a suitable fixture for testing the airtightness of water heating devices is essential for convenient and rapid testing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a tooling for testing the airtightness of water heating components.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a fixture for airtightness testing of a water heating element, comprising a base, a frame fixed on the base, a placement plate mounted on the frame, a clearance groove on the placement plate, and a pair of through holes on the placement plate, the through holes being arranged on the front and rear sides of the clearance groove, each through hole including an upper positioning hole and a lower connecting hole, the upper positioning hole and the lower connecting hole being connected by a middle hole, the diameter of the middle hole being smaller than the diameter of the upper positioning hole, an elastic sealing ring that mates with the water inlet of the water heating element being installed in the upper positioning hole, the lower connecting hole being connected to a connector, the connector being connected to an airtightness testing instrument via an air pipe, a pair of L-shaped limiting seats mounted on the placement plate, the L-shaped limiting seats being arranged on the left and right sides of the clearance groove, a slot being provided at the upper end of the L-shaped limiting seat, a rubber pad being detachably installed in the slot, and a pressing mechanism for pressing down on the water heating element on the base.

[0006] The pressing mechanism includes a cylinder, a column, a mounting beam, a lifting plate, and a pressing plate. The column is vertically fixed on the base, and there are two columns. The mounting beam is fixed between the columns by fixing blocks. The lifting plate is fixed to the end of the piston rod of the cylinder. A guide sleeve is slidably connected to the column. The pressing plate and the guide sleeve are fixedly connected. The pressing plate is also fixedly connected to the lifting plate by several connecting columns.

[0007] The lifting plate is provided with clearance holes that cooperate with the column.

[0008] The rubber pad and the L-shaped limiting seat are also connected by screws.

[0009] The placement plate is made of aluminum plate.

[0010] By adopting the above technical solution, the beneficial effects of this utility model are: In this invention, the water heating element is placed into the placement seat between the L-shaped limiting seats, so that the water inlet of the water heating element is inserted into the through hole, and the left and right sides of the water heating element abut against the rubber pads; the cylinder drives the lifting plate to move downward, and the lifting plate in turn drives the lower pressure plate to move downward. The lower pressure plate applies downward pressure to the water heating element, so that the water inlet abuts against the sealing ring and achieves a sealed connection with the upper positioning hole; with the help of the air pipe and the airtightness test instrument, the airtightness test of the water heating element can be completed, and the inspection is very convenient. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the planar structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the removed portion of this utility model; Figure 3 This is an exploded view of the removed portion of this utility model; Figure 4 This is a cross-sectional view of a partial location of this utility model; Figure 5 This is a three-dimensional structural diagram of the water heating element of this utility model; In the diagram, 1. Base; 2. Frame; 3. L-shaped limiting seat; 3a. Slot; 4. Placement plate; 4a. Clearance groove; 4b. Through hole; 4b1. Upper positioning hole; 4b2. Lower connecting hole; 4b3. Middle hole; 5. Cylinder; 6. Mounting beam; 7. Fixing block; 8. Lifting plate; 8a. Clearance hole; 9. Guide sleeve; 10. Lower pressure plate; 11. Column; 12. Rubber pad; 13. Screw; 14. Air pipe; 15. Connector; 16. Elastic sealing ring; 17. Water heating element; 1701. Water inlet; 1702. Protrusion. Detailed Implementation

[0012] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0013] like Figure 1-5 As shown, this fixture for testing the airtightness of a water heating element includes a base 1, a frame 2 fixed on the base 1, and a placement plate 4 mounted on the frame 2. The placement plate 4 has a clearance groove 4a, and a protrusion 1702 is located on the outer shell of the water heating element 17. The clearance groove 4a mates with the protrusion 1702. A pair of through holes 4b are provided on the placement plate 4, arranged on the front and rear sides of the clearance groove 4a. The through holes 4b include an upper positioning hole 4b1 and a lower connecting hole 4b2, which are connected by an intermediate hole 4b3. The diameter of the intermediate hole 4b3 is smaller than the diameter of the upper positioning hole 4b1. An elastic sealing ring 16 that mates with the water inlet 1701 of the water heating element 17 is also installed in the upper positioning hole 4b1. With this structure, the water inlet 1701 of the water heating element 17 is inserted into the through hole 4b, and downward pressure is applied to the water heating element 17. After the force is applied, the water inlet 1701 will deform the elastic sealing ring 16, thereby sealing and connecting the water inlet 1701, the through hole 4b, and the air pipe 14; the lower connecting hole 4b2 is also connected to the connector 15, which is connected to the air tightness test instrument through the air pipe 14. In this embodiment, the use of the air tightness test instrument to complete the air tightness test of the product adopts the existing technology; a pair of L-shaped limiting seats 3 are installed on the placement plate 4. The L-shaped limiting seats 3 are arranged on the left and right sides of the clearance groove 4a. The upper end of the L-shaped limiting seat 3 is provided with a slot 3a. A rubber pad 12 is detachably installed in the slot 3a. In this embodiment, the rubber pad 12 can play a certain auxiliary limiting role for the water heating element 17, and at the same time, it can also prevent the water heating element 17 from being accidentally scratched during the handling process; the base 1 also has a pressing mechanism for pressing down the water heating element 17.

[0014] The pressing mechanism includes a cylinder 5, a column 11, a mounting beam 6, a lifting plate 8, and a pressing plate 10. The cylinder 5 is a commercially available three-axis cylinder 5. The column 11 is vertically fixed on the base 1, and there are two columns 11. The mounting beam 6 is fixed between the columns 11 by fixing blocks 7. The lifting plate 8 is fixed to the end of the piston rod of the cylinder 5. A guide sleeve 9 is slidably connected to the column 11. The pressing plate 10 and the guide sleeve 9 are fixedly connected. The pressing plate 10 is also fixedly connected to the lifting plate 8 by several connecting columns. With this structure, the pressing plate 10 and the lifting plate 8 can be reliably connected by the connecting columns.

[0015] The lifting plate 8 is provided with a clearance hole 8a that matches the column 11.

[0016] The rubber pad 12 and the L-shaped limiting seat 3 are also connected by screws 13.

[0017] The placement plate 4 is made of aluminum plate.

[0018] In practice, the number of clearance grooves 4a, through holes 4b and L-shaped limiting seats 3 can be increased or decreased as needed. In this embodiment, by changing their corresponding numbers, the airtightness of two water heating elements 17 can be tested simultaneously.

[0019] In this invention, the water heating element 17 is placed into the placement seat between the L-shaped limiting seats 3, so that the water inlet 1701 of the water heating element 17 is inserted into the through hole 4b, and the left and right sides of the water heating element 17 abut against the rubber pad 12; the cylinder 5 drives the lifting plate 8 to move downward, and the lifting plate 8 in turn drives the lower pressure plate 10 to move downward. The lower pressure plate 10 applies downward pressure to the water heating element 17, so that the water inlet 1701 abuts against the sealing ring and achieves a sealed connection with the upper positioning hole 4b1; with the help of the air pipe 14 and the airtightness test instrument, the airtightness test of the water heating element 17 can be completed, and the inspection is very convenient.

[0020] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0021] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A fixture for testing the airtightness of water heating components, comprising a base (1), characterized in that, A frame (2) is fixed on the base (1), and a placement plate (4) is installed on the frame (2). The placement plate (4) has a clearance groove (4a) and a pair of through holes (4b) are opened on the placement plate (4). The through holes (4b) are arranged on the front and rear sides of the clearance groove (4a). The through holes (4b) include an upper positioning hole (4b1) and a lower connecting hole (4b2). The upper positioning hole (4b1) and the lower connecting hole (4b2) are connected by an intermediate hole (4b3). The diameter of the intermediate hole (4b3) is smaller than the diameter of the upper positioning hole (4b1). The upper positioning hole (4b1) is also equipped with a... An elastic sealing ring (16) is fitted with the water inlet (1701) of the water heating element (17). The lower connecting hole (4b2) is also connected to the connector (15). The connector (15) is connected to the air tightness test instrument through the air pipe (14). A pair of L-shaped limiting seats (3) are installed on the placement plate (4). The L-shaped limiting seats (3) are arranged on the left and right sides of the clearance groove (4a). The upper end of the L-shaped limiting seat (3) is provided with a slot (3a). A rubber pad (12) is detachably installed in the slot (3a). The base (1) also has a pressing mechanism for pressing down the water heating element (17).

2. The airtightness testing fixture for water heating components according to claim 1, characterized in that, The pressing mechanism includes a cylinder (5), a column (11), a mounting beam (6), a lifting plate (8), and a pressing plate (10). The column (11) is vertically fixed on the base (1), and there are two columns (11). The mounting beam (6) is fixed between the columns (11) by a fixing block (7). The lifting plate (8) is fixed to the piston rod end of the cylinder (5). A guide sleeve (9) is slidably connected to the column (11). The pressing plate (10) and the guide sleeve (9) are fixedly connected. The pressing plate (10) is also fixedly connected to the lifting plate (8) by several connecting columns.

3. The airtightness testing fixture for water heating components according to claim 2, characterized in that, The lifting plate (8) is provided with a clearance hole (8a) that matches the column (11).

4. The airtightness testing fixture for water heating components according to claim 1, characterized in that, The rubber pad (12) and the L-shaped limiting seat (3) are also connected by screws (13).

5. The airtightness testing fixture for a water heating element according to claim 1, characterized in that, The placement plate (4) is made of aluminum plate.

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