A waterproof water heater

Abstract

This invention discloses a waterproof water heater, comprising an inner cylinder, connectors, a heat exchanger, and an outer cylinder. Both the inner cylinder and the heat exchanger are housed within the outer cylinder, with the heat exchanger surrounding the outer side of the inner cylinder. Several connectors are provided on the inner cylinder. A waterproof bag is provided on the outer wall of the heat exchanger. The connectors pass through the waterproof bag and extend beyond the outer side of the outer cylinder. The waterproof bag is sealed around the connectors. The waterproof bag is then vacuum-sealed onto the heat exchanger, and the sealed end of the waterproof bag is housed in a groove on the bottom surface of the inner cylinder. A waterproof gasket is provided on the outer cylinder at the point where the connectors pass through. This invention effectively prevents rainwater from corroding the heat exchanger internally through the water heater connectors and the area below the water heater, improving product reliability and adaptability to different environments.

Description

Technical Field

[0001] This invention relates to a waterproof water heater. Background Technology

[0002] Currently, most household water heaters are installed indoors. External aluminum-based heat exchanger products cannot be reliably installed outdoors, primarily because the harsh outdoor environment makes it difficult to ensure adequate waterproofing. During heavy rains and the rainy season, rainwater can easily seep into the water heater's interior through the outer tank, corroding the heat exchanger. Furthermore, the galvanic reaction between the aluminum-based heat exchanger and the less reactive metal inner tank accelerates corrosion, ultimately damaging the water tank. Summary of the Invention

[0003] The present invention provides a waterproof water heater in order to solve the problems existing in the prior art.

[0004] The technical solutions adopted in this invention are as follows:

[0005] A waterproof water heater includes an inner cylinder, connectors, a heat exchanger, and an outer cylinder. The inner cylinder and the heat exchanger are both placed inside the outer cylinder. The heat exchanger surrounds the outside of the inner cylinder. Several connectors are provided on the inner cylinder. A waterproof bag is provided on the outer wall of the heat exchanger. The connectors pass through the waterproof bag and extend out of the outside of the outer cylinder. The waterproof bag is sealed and wrapped around the connectors. The waterproof bag is de-aired and vacuum-wrapped around the heat exchanger. The tied end of the waterproof bag is stored in a groove cavity on the bottom surface of the inner cylinder. A waterproof gasket is provided on the outer cylinder at the point where the connectors pass through.

[0006] Furthermore, the outer cylinder is provided with a through hole for connecting the connector, the waterproof pad is fixed in the through hole, and the inner wall of the waterproof pad is attached to the waterproof bag on the outer wall of the inner cylinder.

[0007] Furthermore, the waterproof pad is made of EPS foam and has a conical hole. After the waterproof pad is fixed to the outer cylinder, the larger hole surface of the conical hole faces the outside of the outer cylinder, and the smaller hole surface of the conical hole faces the inner cylinder.

[0008] Furthermore, the outer wall of the connector is provided with parallel sealing grooves, a waterproof bag is wrapped around the connector, and the waterproof bag is fixed in the sealing groove by one or more tightening straps.

[0009] Furthermore, a sealing cap is fitted onto the joint. The sealing cap is a T-shaped cap structure with a stepped surface, and the stepped surface of the sealing cap abuts against the outer wall surface of the outer cylinder.

[0010] Furthermore, the sealing cap is provided with inclined drainage holes.

[0011] Furthermore, the outer cylinder is provided with a pad, the bottom of the inner cylinder is supported on the pad, and a protective cotton is provided between the inner cylinder and the pad.

[0012] Furthermore, drainage holes are provided on the bottom surface of the outer cylinder and on the protective cotton, and the drainage holes of the protective cotton are connected to the drainage holes of the outer cylinder.

[0013] Furthermore, feet are fixed on the bottom surface of the outer cylinder to elevate the water heater.

[0014] Furthermore, the waterproof bag is made of plastic or rubber.

[0015] This invention incorporates a waterproof bag, vacuum-wrapped around the inner cylinder (vacuum wrapping effectively prevents air entrapment during foaming, which can lead to poor foaming, internal voids, and compromised water heater insulation performance), ensuring a tight seal. Furthermore, the waterproof bag is secured to the connector within a sealing groove using a tightening strap, preventing rainwater from entering the interior through the gap between the bag and the connector. A waterproof gasket and decorative cover are located on the outer wall of the outer cylinder. The inner circular surface of the decorative cover adheres to the outer cylinder surface, preventing rainwater from splashing in from the outer shell, forming the first layer of effective barrier. The waterproof gasket and inner cylinder are seamlessly integrated, further ensuring a tight seal. Additionally, the waterproof gasket has a conical hole; rainwater entering the conical hole will flow out through the conical surface of the hole, ensuring a proper seal through a combination of plugging and draining. The knotted end of the waterproof bag's opening is placed within a recessed cavity at the bottom of the inner cylinder, ensuring the sealed opening is within a closed space and effectively preventing the heat exchanger from contacting water during immersion. The resulting beneficial effects are: the invention can effectively prevent rainwater from corroding the heat exchanger inside the product through the water heater joint and the area below the water heater, thereby improving product reliability and adaptability to different environments. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the present invention.

[0017] Figure 2 This is a diagram showing the waterproof structure at the side connector of the water heater.

[0018] Figure 3 This is a structural diagram of the waterproof gasket.

[0019] Figure 4 This is a structural diagram of the sealing cap on the outer cylinder.

[0020] Figure 5 This is a structural diagram of the connector.

[0021] Figure 6 This is a diagram of the waterproof structure at the bottom of the water heater.

[0022] Figure 7 This is a structural diagram of the inner cylinder.

[0023] In the picture:

[0024] 1. Inner cylinder; 2. Connector; 3. Heat exchanger; 5. Outer cylinder; 6. Insulation layer; 7. Waterproof bag; 8. Gasket; 9. Foot; 10. Waterproof pad; 11. Fastening strap; 12. Sealing cap; 13. Protective cotton; 14. Knotted end. Detailed Implementation

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] like Figure 1 As shown, the present invention provides a waterproof water heater, including an inner cylinder 1, a connector 2, a heat exchanger 3, and an outer cylinder 5. The inner cylinder 1 and the heat exchanger 3 are both placed inside the outer cylinder 5. An insulation layer 6 is provided between the inner cylinder 1 and the outer cylinder 5. The heat exchanger 3 surrounds the outer side of the inner cylinder 1. A heat-conducting medium is attached to the inner side of the outer surface of the heat exchanger 3. The heat-conducting medium conducts heat from the heat exchanger to the inner cylinder 1.

[0027] The outer cylinder 5 has an upper cover 51 at the top and a lower cover 52 at the bottom. Several connectors 2 are provided on the inner cylinder 1. The outer cylinder 5 has through holes, and the positions of the through holes correspond one-to-one with the corresponding connectors 2 on the inner cylinder.

[0028] A waterproof bag 7 is provided on the outer wall of the heat exchanger 3. The connector 2 passes through the waterproof bag 7 and the insulation layer 6 and extends out of the outer cylinder 5. The waterproof bag 7 is sealed and wrapped around the connector 2. The waterproof bag 7 is evacuated and vacuum-wrapped on the heat exchanger 3. The tied end of the waterproof bag 7 is stored in the groove cavity on the bottom surface of the inner cylinder 1. A waterproof gasket 10 is provided on the outer cylinder 5 at the joint of the connector 2.

[0029] The present invention provides a waterproof bag, which forms side waterproofing at the installation position of the connector 2 and covers the bottom of the inner cylinder 1 to form bottom waterproofing, effectively ensuring the sealing performance of the present invention. The side waterproofing and bottom waterproofing are described in detail below.

[0030] like Figure 2 The side waterproofing is formed by the structure of the waterproof pad 10 and the decorative cover 12 and their assembly structure. The inner circular surface of the decorative cover 12 is attached to the surface of the outer cylinder 5 to prevent rainwater from splashing into the interior from the outer shell, forming the first layer of effective barrier. The waterproof pad 10 is located between the waterproof bag 7 and the outer cylinder 5, and its thickness is greater than that of the insulation layer 6, being 1.2 times the thickness of the insulation layer 6. The inner wall of the waterproof pad 10 is attached to the waterproof bag 7 on the outer wall of the inner cylinder 1. The seamless structure between the waterproof pad 10 and the inner cylinder further ensures the sealing performance.

[0031] like Figure 3 The waterproof pad 10 is made of EPS foam. EPS foam has a certain degree of resilience, which allows it to form a certain pre-pressure on the outer cylinder 5 when placed inside the product, further preventing rainwater from seeping into the interior through the through-hole area of ​​the outer cylinder 5.

[0032] The waterproof gasket 10 has a conical inner hole. After the waterproof gasket 10 is fixed to the outer cylinder 5, the smaller opening of the conical hole faces inward and the larger opening faces outward. The smaller opening of the waterproof gasket has an adhesive backing, which is attached to the surface of the waterproof bag 7. The waterproof gasket is approximately 1.3 times the size of the outer cylinder, and the larger opening of the conical hole is about 5mm smaller than the corresponding hole on the outer cylinder. During installation, the connector 2, the conical hole of the waterproof gasket 10, the sealing cap 12, and the corresponding through hole on the outer cylinder 5 are concentric. This ensures that if rainwater enters the conical hole, it will flow out of the water heater through the inner conical surface. This effectively prevents rainwater from entering the water heater through the waterproof gasket hole.

[0033] like Figure 4 The sealing cover 12 serves both a decorative and aesthetic purpose, as well as a drainage function. The specific structure of the sealing cover 12 is as follows: the sealing cover 12 is a T-shaped cover with a stepped surface, and the stepped surface of the sealing cover 12 abuts against the outer wall surface of the outer cylinder 5.

[0034] In use, if rainwater enters the conical hole of the waterproof gasket 10, a slanted drainage hole 121 is provided on the sealing cover 12 to better facilitate rainwater drainage. The slant angle of the drainage hole 121 is equal to the taper of the conical hole, and the axis of the drainage hole 121 coincides with the generatrix of the corresponding position of the conical hole. After the sealing cover 12 is connected to the connector 2, the T-shaped head of the sealing cover 12 can play a preliminary waterproofing role, reducing the amount of rainwater entering the waterproof gasket 10. When rainwater does enter the waterproof gasket, the conical hole of the waterproof gasket 10 facilitates rainwater drainage, and the drainage hole 121 prevents water accumulation inside the waterproof gasket 10.

[0035] like Figure 5 The outer wall of the connector 2 has parallel sealing grooves 21. A waterproof bag 7 is wrapped around the connector 2 and secured within the sealing groove 21 by one or more tightening straps 11. The waterproof bag is fixed within the sealing groove 21 to prevent rainwater from entering the connector 2 from between the waterproof bag 7 and the connector 2. The connector 2 has at least four consecutive sealing grooves 21. The grooves have a semi-circular cross-section and a width of approximately 1-2 mm. The distance between two consecutive grooves is greater than the groove width. This ensures that the tightening straps effectively press the waterproof bag 7 into the grooves while preventing the tightening straps 11 from sliding along the axial direction of the connector 2.

[0036] like Figure 6 and Figure 7 The side waterproofing consists of a waterproof bag 7, protective cotton 13, a lower cover 52, and feet 9. The feet 9 are connected to the lower cover 52 by bolts. Installing the feet 9 raises the height of the water heater, preventing rainwater from accumulating at the bottom of the water heater and effectively avoiding the risk of water damage. Protective cotton 13 is attached around the bottom of the inner cylinder 1 to prevent the inner cylinder's own weight from breaking the waterproof bag 7.

[0037] The knotted end 14 at the opening of the waterproof bag 7 is placed in the recessed cavity at the bottom of the inner cylinder 2, so that the opening of the waterproof bag 7 is sealed and placed in a closed space (the recessed cavity at the bottom of the waterproof bag 7 is sealed by a gasket). This can further effectively prevent the heat exchanger from coming into contact with water when it is submerged. At the same time, there are drain holes 521 between the gasket 8 and the lower cover 52, which effectively prevents water from entering from the bottom and getting stuck between the outer cylinder 5 and the insulation layer 6. In use, a sealing plug can be inserted into the drain hole 521.

[0038] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.

Claims

1. A waterproof water heater, comprising an inner cylinder (1), connectors (2), a heat exchanger (3), and an outer cylinder (5), wherein the inner cylinder (1) and the heat exchanger (3) are both placed inside the outer cylinder (5), the heat exchanger (3) surrounds the outer side of the inner cylinder (1), and a plurality of connectors (2) are provided on the inner cylinder (1), characterized in that: A waterproof bag (7) is provided on the outer wall of the heat exchanger (3). The connector (2) passes through the waterproof bag (7) and extends out of the outer cylinder (5). The waterproof bag (7) is sealed and wrapped around the connector (2). The waterproof bag (7) is evacuated and vacuum-wrapped on the heat exchanger (3). The tied end of the waterproof bag (7) is stored in the groove cavity on the bottom surface of the inner cylinder (1). A waterproof pad (10) is provided on the outer cylinder (5) at the joint (2). A sealing cap (12) is fitted on the connector (2). The sealing cap (12) is a T-shaped cap structure with a stepped surface. The stepped surface of the sealing cap (12) abuts against the outer wall surface of the outer cylinder (5). The sealing cap (12) is provided with inclined drainage holes (121).

2. The waterproof water heater as described in claim 1, characterized in that: The outer cylinder (5) has a through hole for connecting the connector (2), the waterproof pad (10) is fixed in the through hole, and the inner wall of the waterproof pad (10) is attached to the waterproof bag (7) on the outer wall of the inner cylinder (1).

3. The waterproof water heater as described in claim 2, characterized in that: The waterproof pad (10) is made of EPS foam. A conical hole is provided on the waterproof pad (10). After the waterproof pad (10) is fixed on the outer cylinder (5), the large hole surface of the conical hole faces the outside of the outer cylinder (5), and the small hole surface of the conical hole faces the inner cylinder (1).

4. The waterproof water heater as described in claim 1, characterized in that: The outer wall of the connector (2) is provided with parallel sealing grooves (21), and a waterproof bag (7) is wrapped around the connector (2), and the waterproof bag (7) is tied and fixed in the sealing groove (21) by one or more tightening straps (11).

5. The waterproof water heater as described in claim 1, characterized in that: The outer cylinder (5) is provided with a pad (8), the bottom of the inner cylinder (1) is supported on the pad (8), and a protective cotton (13) is provided between the inner cylinder (1) and the pad (8).

6. The waterproof water heater as described in claim 1, characterized in that: Drainage holes (521) are provided on the bottom surface of the outer cylinder (5) and on the protective cotton (13), and the drainage holes (521) of the protective cotton (13) are connected to the drainage holes (521) of the outer cylinder (5).

7. The waterproof water heater as described in claim 1, characterized in that: The bottom surface of the outer cylinder (5) is fixed with feet (9) to elevate the water heater.

8. The waterproof water heater as described in claim 1, characterized in that: The waterproof bag (7) is made of plastic or rubber.

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