A constant temperature water tank

Abstract

The present invention discloses a constant temperature water tank, which is obtained by assembly and includes: a tank body, which includes two end covers, and at least one of the end covers is provided with a through hole; a tension pipe, the inner structure of the pipe body forms a first channel and a second channel that are not connected to each other, and the first channel and the second channel respectively have a first communication port and a second communication port that communicate with the inner cavity of the tank body; the tension pipe is horizontally arranged in the tank body and at least one end of the tension pipe passes through the through hole on the corresponding side end cover and extends outside the end cover, and limiting devices are arranged at both ends of the tension pipe, and the two side end covers are limited and tightened by the limiting devices on both sides to form a firmly matched assembly connection. The structure of the present invention is simple, the constant temperature water tank is obtained by simple assembly, welding is avoided, the corrosion resistance of the constant temperature water tank is effectively improved, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and particularly to a constant temperature water tank. Background Art

[0002] The constant temperature water tank is an important part of a water heater, which is used to ensure that users can use constant temperature hot water at any time, avoiding the phenomenon of "sudden cold and sudden heat", and improving the user experience. However, most of the existing conventional constant temperature water tanks are formed by welding. However, the welding process will damage the structure of the water tank itself, thus greatly reducing the corrosion resistance of the constant temperature water tank and shortening the service life of the constant temperature water tank, leaving room for improvement. Summary of the Invention

[0003] The present invention is to overcome the above-mentioned defects in the prior art and provides a constant temperature water tank, which is formed by assembling, avoiding damage to the constant temperature water tank caused by processes such as welding, improving the corrosion resistance, and extending the service life.

[0004] To achieve the above object, the present invention provides a constant temperature water tank, which is prepared by assembling and includes:

[0005] A tank body, which includes two end covers, and at least one of the end covers is provided with a through hole;

[0006] A tension tube, the internal structure of the tube body of which forms a first channel and a second channel that are not connected to each other, and the first channel and the second channel respectively have a first connection port and a second connection port that are connected to the inner cavity of the tank body;

[0007] The tension tube is horizontally arranged in the tank body, and at least one end of the tension tube passes through the through hole on the corresponding side of the end cover and extends outside the end cover. Limit devices are arranged at both ends of the tension tube, and the two end covers are limited and tightened by the limit devices on both sides to form a stable and cooperative assembled connection.

[0008] It is further arranged that: the limit device is an expanded mouth structure made at the end of the tension tube by an expanding tube device;

[0009] Or, the limit device is a flanging structure located at the end of the tension tube;

[0010] Or, the limit device includes a threaded section located at the end of the tension tube and a nut that cooperates with the threaded section;

[0011] Or, the limit device includes a through hole located at the end of the tension tube and a limit pin inserted into the through hole;

[0012] Alternatively, the limiting device includes a inserting piece radially inserted at the end of the tensioning end, and a screw passing from the outside to the inside of the end cover and threadedly connected to the inserting piece. Correspondingly, a slot for inserting the inserting piece is provided on the tensioning end, a threaded hole for threaded cooperation with the screw is provided on the inserting piece, and a through hole for the screw to pass through is provided on the end cover;

[0013] The limiting devices at both ends of the tensioning tube can be optionally one or two of the above structures.

[0014] Further, it is set that: the tensioning tube is a hollow tube body structure with both ends penetrating, and a partition is fixedly arranged inside the tube body of the tensioning tube to divide the inner tube body of the tensioning tube into a non-connected first channel and a second channel, and a first communication port and a second communication port communicating with the first channel and the second channel are respectively opened on the tube walls of the tensioning tube on both sides of the partition.

[0015] Further, it is set that: the tensioning tube is a hollow tube body structure with one end closed, and an inner tube body extending towards the open end is formed inside the tube body of the tensioning tube. The end wall of the starting end of the inner tube body is circumferentially connected to the tube wall of the tensioning tube to form a first channel located inside the inner tube body and a second channel located between the tensioning tube and the inner tube body. First communication holes and second communication holes communicating with the first channel and the second channel are respectively opened on both sides of the tensioning tube corresponding to the connection between the inner tube body and the tensioning tube.

[0016] Further, it is set that: the closed end of the tensioning tube is formed by blocking with a plug.

[0017] Further, it is set that: a limiting ring is further included, and the limiting ring is sleeved on the end of the tensioning tube corresponding to the outside of the end cover and abuts and connects between the limiting device and the end cover.

[0018] Further, it is set that: a stepped counterbore structure is provided on the end cover corresponding to the through hole, a first sealing ring is embedded on the low-order surface of the counterbore, and the limiting ring is embedded on the high-order surface of the counterbore and presses against the first sealing ring.

[0019] Further, it is set that: the tank body includes a tank body and end covers sleeved at both ends of the tank body, and a second sealing ring is provided at the joint between the tank body and the end covers.

[0020] Further, it is set that: the tank body is formed by butting two end covers, and a third sealing ring is provided at the joint between the two.

[0021] Compared with the prior art, the structure of the present invention is simple and reasonable. The constant temperature water tank is made by assembling a tensioning tube and a tank body, effectively avoiding welding, thereby improving corrosion resistance and extending service life. Description of the Drawings

[0022] Figure 1It is a schematic three - dimensional structure diagram of a constant - temperature water tank of the present invention;

[0023] Figure 2 is Figure 1 a schematic diagram of the first implementation structure of the axial section;

[0024] Figure 3 is Figure 2 a schematic enlarged structure diagram of part A;

[0025] Figure 4 is Figure 1 a schematic diagram of the second implementation structure of the axial section;

[0026] Figure 5 is a schematic diagram of the second implementation structure of the limit device;

[0027] Figure 6 is a schematic diagram of the third implementation structure of the limit device;

[0028] Figure 7 is a schematic diagram of the fourth implementation structure of the limit device;

[0029] Figure 8 is a schematic diagram of the fifth implementation structure of the limit device;

[0030] Figure 9 is a schematic diagram of the second implementation structure of the tank body.

[0031] Mark the following reference numerals on the accompanying drawings:

[0032] 1. Tank body; 11. End cover; 111. Through - hole; 112. Counterbore; 12. Tank body; 2. Tension pipe; 21. First channel; 211. First communication port; 22. Second channel; 221. Second communication port; 23. Barrier member; 24. Inner tube body; 3. Limit device; 31. Expanded mouth structure; 32. Flanging structure; 331. Threaded section; 332. Nut; 341. Limit pin; 351. Insert piece; 352. Screw; 4. Limit ring; 5. First sealing ring; 6. Second sealing ring; 7. Plug. Specific embodiments

[0033] The following will describe in detail a specific embodiment of the present invention with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0034] A constant - temperature water tank of the present invention is as Figures 1 to 9As shown in the figure, the constant temperature water tank is manufactured by assembly, avoiding the welding of traditional constant temperature water tanks, thus effectively improving the corrosion resistance of the constant temperature water tank and extending its service life. The constant temperature water tank includes a tank body 1 and a tension pipe 2. The tank body 1 includes at least two end covers 11, and at least one of the two end covers 11 is provided with a through hole 111 for the end of the tension pipe 2 to pass through. The tension pipe 2 is horizontally arranged in the tank body 1, and limiting devices 3 are arranged at both ends of the tension pipe 2. The two end covers 11 are limited and tightened through the limiting devices 3 at both ends to form a firmly assembled and connected constant temperature water tank. Among them, a non-connected first channel 21 and second channel 22 are formed inside the pipe body of the tension pipe 2. The first channel 21 and the second channel 22 are respectively provided with a first communication port 211 and a second communication port 221 that communicate with the inner cavity of the tank body 1 to realize the inlet and outlet of water in the constant temperature water tank. Furthermore, the end of the tension pipe 2 extending outside the end cover 11 through the through hole 111 can be used as a joint connected to an external pipeline.

[0035] In the above solution, the structure of the tension pipe 2 is as Figure 2 shown. The tension pipe 2 is a hollow pipe body structure with both ends penetrating. A barrier member 23 is fixedly arranged inside the hollow pipe body of the tension pipe 2. The barrier member 23 divides the pipe body of the tension pipe 2 into two non-connected parts, namely the first channel 21 and the second channel 22. First communication ports 211 for communicating the first channel 21 with the inner cavity of the tank body 1 and second communication ports 221 for communicating the second channel 22 with the inner cavity of the tank body 1 are respectively opened on the two side walls of the tension pipe 2 corresponding to both sides of the barrier member 23, so as to realize water inlet at one end and water outlet at the other end. In this way, both ends of the tension pipe 2 penetrate through the end cover 11 to facilitate connection with an external pipeline. Correspondingly, through holes 111 are opened on both end covers 11 at both ends.

[0036] In the above solution, the structure of the tension pipe 2 can also be as Figure 4 shown. The tension pipe 2 is a hollow pipe body structure with one end closed, and the closed end is formed by blocking with a plug 7. An inner pipe body 24 extending towards the open end is formed inside the pipe body of the tension pipe 2. The circumferential end wall of the starting end of the inner pipe body 24 is connected to the inner wall of the tension pipe 2 to form a first channel 21 inside the inner pipe body 24 and a second channel 22 between the inner pipe body 24 and the tension pipe 2. First communication ports 211 for communicating the first channel 21 with the inner cavity of the tank body 1 and second communication ports 221 for communicating the second channel 22 with the inner cavity of the tank body 1 are respectively opened on the two side walls of the tension pipe 2 corresponding to the connection between the inner pipe body 24 and the tension pipe 2, so as to realize water inlet and outlet at the same end. In this way, the water inlet and outlet end must penetrate through the end cover 11 to facilitate connection with an external pipeline, and the other end can be selected to penetrate or not penetrate the end cover 11 according to specific needs.

[0037] In the above solution, the limiting devices 3 at both ends of the tension tube 2 can have the same structure or different structures, and the structures of the limiting devices 3 at both ends can be selected according to specific needs. Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8 one or two of the structures in, so as to limit and tighten the end caps 11 on both sides through the limiting devices 3 at both ends to form a stable fit; as Figure 3 shown, the limiting device 3 is an expanded mouth structure 31 formed by expanding the end of the tension tube 2 through an expanding tube device; as Figure 5 shown, the limiting device 3 is a flanging structure 32 that turns outward at the end of the tension tube 2; as Figure 6 shown, the limiting device 3 includes a threaded section 331 at the end of the tension tube 2 and a nut 332 that mates with the threaded section 331; as Figure 7 shown, the limiting device 3 includes a through hole at the end of the tension tube 2 and a limit pin 341 inserted into the through hole; as Figure 8 shown, the limiting device 3 includes an insert piece 351 radially inserted at the end of the tension end and a screw 352 that passes through from the outside to the inside of the end cap 11 and is threadedly connected to the insert piece 351. Correspondingly, a slot for inserting the insert piece 351 is provided on the tension end, a threaded hole for threadedly mating with the screw 352 is provided on the insert piece 351, and a through hole for the screw 352 to pass through is provided on the end cap 11.

[0038] As Figure 3 shown, the tension tube 2 passes through the through hole 111 and extends outside the end cap 11. A limit ring 4 is sleeved on the end of the tension tube 2. The limit ring 4 is in contact connection between the limiting device 3 and the end cap 11. The end cap 11 is provided with a stepped counterbore 112 structure corresponding to the through hole 111. A first sealing ring 5 is embedded on the low step surface of the counterbore 112. The limit ring 4 is embedded on the high step surface of the counterbore 112 and presses against the first sealing ring 5 to form a sealed fit between the tension tube 2 and the end cap 11.

[0039] As Figure 1 and 9 shown, the tank body 1 is formed by mating two end caps 11. Preferably, a third sealing ring is provided at the connection of the two end caps 11; the tank body 1 can also be composed of a tank body 12 and two end caps 11. The two end caps 11 are respectively sleeved on both ends of the tank body 12, and a second sealing ring 6 is provided at the connection of the end cap 11 and the tank body 12.

[0040] Compared with the prior art, the structure of the present invention is simple and reasonable. The constant temperature water tank is made by assembling a tension tube and a tank body, effectively avoiding welding, thereby improving corrosion resistance and extending service life.

[0041] The above are only the embodiments of the present invention. However, the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art shall fall within the protection scope of the present invention.

Claims

1. A constant temperature water tank, characterized in that, The constant temperature water tank is manufactured by assembly and includes: A tank body, which includes two end covers, and at least one of the end covers is provided with a through hole; A tension tube, the internal structure of the tube body of which forms a first channel and a second channel that are not connected to each other, and the first channel and the second channel respectively have a first connection port and a second connection port that are connected to the inner cavity of the tank body; The tension tube is horizontally arranged in the tank body, and at least one end of the tension tube passes through the through hole on the corresponding side end cover and extends outside the end cover. Limit devices are arranged at both ends of the tension tube, and the two side end covers are limited and tightened through the limit devices on both sides to form a stable and cooperative assembly connection; The limit device is a flared structure made at the end of the tension tube by a tube expanding device; Alternatively, the limit device is a flanging structure located at the end of the tension tube; Alternatively, the limit device includes a threaded section located at the end of the tension tube and a nut that mates with the threaded section; Alternatively, the limit device includes a through hole located at the end of the tension tube and a limit pin inserted into the through hole; Alternatively, the limit device includes a tab radially inserted at the end of the tension end and a screw that passes through from the outside of the end cover to the inside and is threadedly connected to the tab. Correspondingly, a slot for inserting the tab is provided on the tension end, a threaded hole that threadedly mates with the screw is provided on the tab, and a through hole for the screw to pass through is provided on the end cover; The limit devices at both ends of the tension tube can be optionally one or two of the above structures; The tension tube is a hollow tube body structure with both ends penetrating. A partition is fixedly arranged inside the tube body of the tension tube to divide the internal tube body of the tension tube into a first channel and a second channel that are not connected. First connection ports and second connection ports that are connected to the first channel and the second channel are respectively opened on the tube walls on both sides of the partition of the tension tube; Alternatively, the tension tube is a hollow tube body structure with one end closed. An inner tube body extending towards the open end is formed inside the tube body of the tension tube. The starting end wall of the inner tube body is circumferentially connected to the tube wall of the tension tube to form a first channel located inside the inner tube body and a second channel located between the tension tube and the inner tube body. First connection holes and second connection holes that are connected to the first channel and the second channel are respectively opened on both sides of the tension tube corresponding to the connection part of the inner tube body and the tension tube; 2. The constant temperature water tank according to claim 1, characterized in that, The closed end of the tension tube is formed by blocking with a plug; 3. The constant temperature water tank according to claim 1, characterized in that, It further includes a limit ring, which is sleeved on the end of the tension tube corresponding to the outside of the end cover and abuts and connects between the limit device and the end cover; 4. The thermostatic water tank according to claim 3, characterized in that, A stepped counterbore structure is arranged on the end cover corresponding to the through hole. A first sealing ring is embedded on the low-order surface of the counterbore, and the limit ring is embedded on the high-order surface of the counterbore and presses against the first sealing ring; 5. The constant temperature water tank according to claim 1, characterized in that, The tank body includes a tank body and end covers sleeved at both ends of the tank body, and a second sealing ring is arranged at the joint of the tank body and the end cover; 6. The thermostatic water tank according to claim 1, characterized in that, The tank body is formed by butting two end covers, and a third sealing ring is arranged at the joint of the two;

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