Solar water heater anti-explosion pipe device and solar water heater

Abstract

The present invention proposes a solar water heater explosion-proof tube device and a solar water heater thereof. The explosion-proof tube device includes a cavity assembly and a float assembly. The cavity assembly includes a cavity and a cover. The cavity is arranged inside the end of the vacuum tube. The cover is arranged at the open end of the cavity and fits therewith. An upper water hole is provided on the cover. A lower water hole is provided on the end surface of the closed end of the cavity. The float assembly can be slidably arranged inside the cavity and cooperate with the upper and lower water holes. The float assembly has a first state and a second state. When in the first state, the float assembly fits the lower water hole and is away from the upper water hole. When in the second state, the float assembly fits the upper water hole and is away from the lower water hole. The present invention effectively prevents the vacuum tube from being damaged by the explosion-proof tube device. When the vacuum tube is damaged due to external force, the water heater can be used normally without the need for emergency repair.

Description

Technical Field

[0001] The present invention relates to the technical field of water heaters, and in particular to a solar water heater anti-explosion pipe device and a solar water heater thereof. Background Art

[0002] Solar water heaters are widely used, saving energy and benefiting the environment. However, they also have their drawbacks. For example, when water consumption is high during the day, the temperature inside the all-glass vacuum tubes used for heat exchange in the water heater can become too high. This sudden influx of cold water can cause the hot, hot vacuum tubes to burst when suddenly cooled, damaging the solar water heater and affecting its use. Furthermore, a ruptured vacuum tube can cause water to leak rapidly from the water heater tank, wasting water resources and causing inconvenience to nearby residents. Summary of the Invention

[0003] In view of the above problems, the present invention provides a solar water heater anti-explosion tube device and a solar water heater thereof, which solves the problem in the prior art that the all-glass vacuum tube is easily exploded when it is suddenly cooled down due to high temperature, causing damage to the solar water heater. After the vacuum tube is broken, the water in the water heater tank will quickly leak out, causing waste of water resources.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a solar water heater anti-explosion pipe device, installed at the connection between the vacuum tube and the water tank, including a cavity assembly and a float assembly, the cavity assembly includes a cavity and a cover, the cavity is arranged inside the end of the vacuum tube, the cover is arranged at the open end of the cavity and fits therewith, and an upper water hole is provided on the cover, and a lower water hole is provided on the end face of the closed end of the cavity, the float assembly can be slidably arranged inside the cavity and cooperate with the upper water hole and the lower water hole; the float assembly has a first state and a second state, when in the first state, the float assembly fits the lower water hole and is away from the upper water hole, and when in the second state, the float assembly fits the upper water hole and is away from the lower water hole.

[0005] As a preferred embodiment, the float assembly includes a float rod, and a float, an upper sealing plug and a lower sealing plug mounted on the float rod, and the float is located between the upper sealing plug and the lower sealing plug. The two ends of the float rod respectively pass through the closed end of the cavity and the cover, and are slidably connected to them.

[0006] As a preferred solution, the float assembly further comprises a limiting nut, which cooperates with the bottom end of the float rod and is used to enable the lower sealing plug to close the lower water hole when the vacuum tube ruptures.

[0007] As a preferred solution, a sealing ring is provided at the position where the cover and the cavity meet the outer wall of the float rod.

[0008] As a preferred solution, the upper water hole and the lower water hole are multiple evenly opened ring-shaped through holes, and the upper sealing plug and the lower sealing plug respectively cooperate with the upper water hole and the lower water hole to seal.

[0009] As a preferred solution, the upper water hole and the lower water hole are annular holes, and the upper sealing plug and the lower sealing plug respectively cooperate with the upper water hole and the lower water hole to seal.

[0010] As a preferred solution, a counterweight ring is provided between the float and the lower sealing plug for adjusting buoyancy.

[0011] As a preferred solution, the cavity assembly and the end of the vacuum tube are connected by interference fit or threaded connection.

[0012] The present invention also provides a solar water heater, comprising the anti-explosion pipe device for the solar water heater as described in any one of the above items.

[0013] Compared with the prior art, the beneficial effects of the present invention include: by installing an explosion-proof pipe device at the connection between the vacuum tube and the water tank, the device consists of a cavity assembly and a float assembly. When the solar water heater is filled with water, the water flows into the cavity through the upper water hole of the cover, and at the same time, the pressure of the water flow pushes the float assembly to the bottom of the cavity, and at this time the lower sealing plug closes the lower water hole at the bottom of the cavity. When the cavity is full of water, under the action of the buoyancy of the float, the float assembly moves toward the cover, the upper sealing plug closes the upper water hole of the cover, and the lower water hole at the bottom of the cavity opens, and the water in the cavity begins to enter the all-glass vacuum tube of the solar water heater. Since the water in the cavity continuously absorbs external heat during the process of filling and releasing, and enters the all-glass vacuum tube after the water temperature rises, the temperature difference between the water temperature and the vacuum tube is small, which is not easy to cause damage to the vacuum tube. When the vacuum tube is damaged due to external force, use the matching limit nut to tighten it on the bottom end of the float rod. During the tightening process, the lower sealing plug continues to move downward until it is tightly sealed with the lower water hole, so that the water heater can be used normally without the need for emergency repairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The disclosure of the present invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0015] Figure 1 A schematic structural diagram of a solar water heater provided with an anti-explosion pipe device according to an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0017] Figure 3 for Figure 1A partial enlarged schematic diagram of point A in the middle (limit nut tightened).

[0018] Numbers in the figure: 1 vacuum tube, 2 water tank, 3 water inlet, 4 float assembly, 4.1 float rod, 4.2 float, 4.3 upper sealing plug, 4.4 lower sealing plug, 4.5 counterweight ring, 4.6 limit nut, 5 cavity assembly, 5.1 cavity, 5.2 lower water hole, 5.3 cover, 5.4 upper water hole. DETAILED DESCRIPTION

[0019] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0020] According to one embodiment of the present invention, Figure 1 and 2 A solar water heater includes a water tank 2, a vacuum tube 1 and an explosion-proof pipe device. The water tank 2 is connected to multiple vacuum tubes 1 in parallel. The explosion-proof pipe device is installed at the connection between the vacuum tube 1 and the water tank 2. The water tank 2 is provided with a water inlet 3 for water intake.

[0021] The above-mentioned anti-explosion pipe device includes a cavity assembly 5 and a float assembly 4. The cavity assembly 5 includes a cavity 5.1 and a cover 5.3. The cavity 5.1 is arranged inside the end of the vacuum tube 1, and the cover 5.3 is arranged at the open end of the cavity 5.1 and fits therewith. An upper water hole 5.4 is opened on the cover 5.3, and a lower water hole 5.2 is opened on the end surface of the closed end of the cavity 5.1. The float assembly 4 can be slidably arranged inside the cavity 5.1 and cooperate with the upper water hole 5.4 and the lower water hole 5.2. The cavity assembly 5 and the end of the vacuum tube 1 are interference fit or threaded.

[0022] The float assembly 4 has a first state and a second state. In the first state, the float assembly 4 is in contact with the lower water hole 5.2 and away from the upper water hole 5.4, allowing water in the water tank 2 to flow into the cavity 5.1. In the second state, the float assembly 4 is in contact with the upper water hole 5.4 and away from the lower water hole 5.2, allowing water in the cavity 5.1 to flow into the vacuum tube 1.

[0023] Specifically, the above-mentioned float assembly 4 includes a float rod 4.1, a float 4.2, an upper sealing plug 4.3 and a lower sealing plug 4.4 mounted on the float rod 4.1, and the float 4.2 is located between the upper sealing plug 4.3 and the lower sealing plug 4.4. The two ends of the float rod 4.1 respectively pass through the closed end of the cavity 5.1 and the cover 5.3, and are slidably connected to them.

[0024] The upper water hole 5.4 and the lower water hole 5.2 are multiple holes evenly arranged in a ring shape, and the upper sealing plug 4.3 and the lower sealing plug 4.4 respectively cooperate with the upper water hole 5.4 and the lower water hole 5.2 to seal. Optionally, the upper water hole 5.4 and the lower water hole 5.2 are ring-shaped holes.

[0025] Furthermore, a sealing ring is provided at the junction of the cover 5.3 and the cavity 5.1 with the outer wall of the float rod 4.1 to prevent water leakage.

[0026] Furthermore, Figure 3 As shown, a weight ring 4.5 is provided between the float 4.2 and the lower sealing plug 4.4 for adjusting buoyancy. The float assembly 4 also includes a stop nut 4.6, which cooperates with the bottom end of the float rod 4.1 to seal the lower water hole 5.2 with the lower sealing plug 4.4 in the event of a rupture of the vacuum tube 1.

[0027] The present invention discloses a solar water heater explosion-proof pipe device and a solar water heater thereof. When the solar water heater is filled with water, water flows through the upper water hole 5.4 of the cover 5.3 and enters the cavity 5.1. Simultaneously, the pressure of the water flow pushes the float assembly 4 to the bottom of the cavity 5.1. At this time, the lower sealing plug 4.4 closes the lower water hole 5.2 at the bottom of the cavity 5.1. When the cavity 5.1 is filled with water, under the buoyancy of the float 4.2, the float assembly 4 moves toward the cover 5.3. The upper sealing plug 4.3 closes the upper water hole 5.4 of the cover 5.3, and the lower water hole 5.2 at the bottom of the cavity 5.1 opens. The water in the cavity 5.1 begins to enter the all-glass vacuum tube 1 of the solar water heater. Because the water in the cavity 5.1 continuously absorbs external heat during the process of filling and releasing, and the water temperature rises before entering the all-glass vacuum tube 1, the temperature difference between the water temperature and the vacuum tube 1 is small, which is less likely to cause damage to the vacuum tube 1. When the water level in the cavity 5.1 drops, the float assembly 4 moves downward accordingly, the upper water hole 5.4 of the cover 5.3 opens, and water flows into the cavity 5.1 through the upper water hole 5.4. At the same time, the pressure of the water flow pushes the float assembly 4 to the bottom of the cavity 5.1 again, and the lower sealing plug 4.4 closes the lower water hole 5.2 at the bottom of the cavity 5.1. This process is repeated until the all-glass vacuum tube 1 of the solar water heater is filled with water. Under the action of the buoyancy of the float 4.2, the float assembly 4 moves toward the cover 5.3, and the upper sealing cover 5.3 closes the upper water hole 5.4.

[0028] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of ​​the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A solar water heater explosion-proof pipe device, installed at the connection between the vacuum tube and the water tank, characterized in that: The invention comprises a cavity assembly and a float assembly, wherein the cavity assembly comprises a cavity and a cover, wherein the cavity is arranged inside the end of the vacuum tube, the cover is arranged at the open end of the cavity and fits with it, and an upper water hole is opened on the cover, and a lower water hole is opened on the end surface of the closed end of the cavity, and the float assembly can be slidably arranged inside the cavity and cooperate with the upper water hole and the lower water hole; The float assembly has a first state and a second state. In the first state, the float assembly is in contact with the lower water hole and away from the upper water hole. In the second state, the float assembly is in contact with the upper water hole and away from the lower water hole. The float assembly includes a float rod, a float sleeved on the float rod, an upper sealing plug and a lower sealing plug, and the float is located between the upper sealing plug and the lower sealing plug. The two ends of the float rod respectively pass through the closed end of the cavity and the cover and are slidably connected thereto. The float assembly further comprises a limiting nut, which cooperates with the bottom end of the float rod and is used to allow the lower sealing plug to close the lower water hole when the vacuum tube ruptures; A sealing ring is provided at the position where the sealing cover and the cavity meet the outer wall of the floating rod.

2. The anti-explosion pipe device for solar water heater according to claim 1, characterized in that: The upper water hole and the lower water hole are multiple evenly opened through holes in a ring shape, and the upper sealing plug and the lower sealing plug are respectively matched with the upper water hole and the lower water hole for sealing.

3. The anti-explosion pipe device for solar water heater according to claim 1, characterized in that: The upper water hole and the lower water hole are annular through holes, and the upper sealing plug and the lower sealing plug respectively cooperate with the upper water hole and the lower water hole to seal.

4. The anti-explosion pipe device for solar water heater according to claim 1, characterized in that: A counterweight ring is provided between the float and the lower sealing plug for adjusting buoyancy.

5. The anti-explosion pipe device for solar water heater according to claim 1, characterized in that: The cavity assembly and the end of the vacuum tube are connected by interference fit or threaded connection.

6. A solar water heater, characterized in that: The invention comprises the anti-explosion pipe device for solar water heater according to any one of claims 1 to 5.

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