Triple-protection zero-pressure water dispenser

Abstract

The utility model discloses a triple-protection zero-pressure water dispenser, which comprises a heating water container and a heat exchanger, and is characterized in that a first pressure release valve is connected in series on a pipeline A and is used for controlling the water pressure entering the heating water container not to exceed a set value, and a second pressure release valve is connected in series on a pipeline B or a pipeline C and is used for controlling the water pressure entering the heating water container not to exceed the set value. The pressure relief opening is formed in the top of the heating water container, the third pressure relief valve is connected to the pressure relief opening, it is ensured that the water pressure in the heating water container does not exceed the threshold value through the second pressure relief valve and the third pressure relief valve at the same time, even if the second pressure relief valve fails, safety can be ensured through the third pressure relief valve, and the water heater has the advantage of being high in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of water drinking machines, in particular to a triple protection zero-pressure water drinking machine. Background Art

[0002] Water dispensers are commonly used in schools, hospitals, canteens and other places to provide drinking water to people. For water dispensers using heated water tanks, because the heated water tank is in a closed state, the pressure in the heated water tank will increase during the heating process. In order to ensure safety, a pressure relief valve is installed on the top of the heated water tank when the heated water tank leaves the factory. Because the pressure relief valve is installed on the top of the heated water tank, it is in a high temperature and high pressure environment for a long time, and there is a risk of failure in extreme cases. In addition, the heat exchanger of the existing water dispenser adopts a thick corrugated pipe and a thin corrugated pipe nested in a manner, and the two ends are connected by welding. After long-term use, scale is easily generated on the inner wall of the hot water pipe, affecting the heat conduction effect, and the entire set of heat exchangers can only be replaced.

[0003] The utility model is proposed in view of the deficiencies in the prior art. Utility Model Content

[0004] The pressure relief valve of the heating water tank in the prior art mentioned above is installed on the top of the hot water tank. The pressure relief valve is in a high temperature and high pressure environment for a long time, and there is a risk of failure in extreme cases. The technical solution adopted by the utility model to solve its technical problems is: a triple protection zero-pressure water dispenser, including: a heating water tank and a heat exchanger, the cold water inlet of the heat exchanger is connected to a water source, the cold water outlet of the heat exchanger is connected to the water inlet of the heating water tank through a pipe A, the water outlet of the heating water tank is connected to a three-way joint, the first water outlet end of the three-way joint is connected to a boiling water tap through a pipe B, the second water outlet end of the three-way joint is connected to the hot water inlet of the heat exchanger through a pipe C, the first hot water outlet of the heat exchanger is connected to a warm water tap, the first pressure relief valve is connected in series on the pipe A, the second pressure relief valve is connected in series on the pipe B or the pipe C, and a pressure relief port is provided on the top of the heating water tank, and the pressure relief port is connected to a third pressure relief valve.

[0005] In the triple protection zero-pressure water dispenser as described above, the second hot water outlet of the heat exchanger is connected to a boiled water faucet.

[0006] As described above, the triple protection zero-pressure water dispenser, the heat exchanger comprises: a left half shell, a right half shell and a heat exchange tube, a cavity is provided between the left half shell and the right half shell, the heat exchange tube is sealed and connected in the cavity, the hot water inlet is connected to one end of the heat exchange tube, the first hot water outlet is connected in series to the heat exchange tube, and the second hot water outlet is connected to the other end of the heat exchange tube.

[0007] As described above, in the triple protection zero-pressure water dispenser, a partition is provided between the left half shell and the right half shell for dividing the cavity into a plurality of heat exchange chambers, and each of the partitions is provided with a through hole for connecting the plurality of heat exchange chambers end to end.

[0008] As described above, the triple protection zero-pressure water dispenser, the heat exchange tube comprises: a heat exchange part corresponding to the number of heat exchange chambers and a connecting part for connecting adjacent heat exchange parts in series end to end, and the heat exchange part is located in the heat exchange chamber.

[0009] In the triple protection zero-pressure water dispenser as described above, the connecting portion is in a "U" shape.

[0010] In the triple protection zero-pressure water dispenser as described above, the connecting portion is positioned at the through hole, and a water channel is provided on the side wall of the through hole.

[0011] As described above, in the triple protection zero-pressure water dispenser, the cold water inlet is arranged on the left half shell and communicated with one end of the heat exchange chamber; the cold water outlet is arranged on the left half shell and communicated with the other end of the heat exchange chamber.

[0012] As described above, in the triple protection zero-pressure water dispenser, a sealing groove is provided between the left half shell and the right half shell, and the sealing groove is arranged around the cavity.

[0013] The triple protection zero-pressure water dispenser as described above, wherein the bolts between the left half shell and the right half shell are used to lock the left half shell and the right half shell into one.

[0014] The beneficial effects of the utility model are:

[0015] 1. The triple-protected drinking fountain of the utility model is provided with a first pressure relief valve in series on the pipe A, and the water pressure entering the heating water tank is controlled by the first pressure relief valve so as not to exceed the set value. A second pressure relief valve is connected in series on the pipe B or the pipe C, and a pressure relief port is provided on the top of the heating water tank, and a third pressure relief valve is connected to the pressure relief port. The second pressure relief valve and the third pressure relief valve are used to ensure that the water pressure in the heating water tank does not exceed the threshold value. Even if the second pressure relief valve fails, the third pressure relief valve can ensure safety, and the utility model has the advantage of high safety.

[0016] 2. When a lot of scale accumulates on the heat exchange tubes of the heat exchanger and the heat conduction effect is poor, the heat exchange tubes can be easily replaced.

[0017] 3. A partition is provided between the left half shell and the right half shell to divide the cavity into multiple heat exchange chambers. Each partition is provided with a through hole for connecting the multiple heat exchange chambers end to end, which can increase the contact area between the heat exchange tube and the cold water and improve the heat exchange efficiency.

[0018] The utility model will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the principle of the triple protection water dispenser of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the heat exchanger in the triple protection water dispenser of the utility model;

[0021] Figure 3 It is a schematic diagram of the main view of the heat exchanger in the triple protection water dispenser of the utility model;

[0022] Figure 4 for Figure 3 The full cross-section diagram along the AA direction;

[0023] Figure 5 This is one of the exploded schematic diagrams of the heat exchanger in the triple protection water dispenser of the utility model;

[0024] Figure 6 This is the second exploded schematic diagram of the heat exchanger in the triple protection water dispenser of the utility model;

[0025] Figure 7 for Figure 6 Magnified view of the portion B marked in FIG. DETAILED DESCRIPTION

[0026] The implementation modes of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 7As shown, the triple protection zero-pressure water dispenser of this embodiment includes: a heating water tank 1 and a heat exchanger 2, the cold water inlet 201 of the heat exchanger 2 is connected to a water source, the cold water outlet 202 of the heat exchanger 2 is connected to the water inlet of the heating water tank 1 through a pipe A31, the water outlet of the heating water tank 1 is connected to a three-way joint 32, the first water outlet end of the three-way joint 32 is connected to a boiling water tap 41 through a pipe B33, the second water outlet end of the three-way joint 32 is connected to the hot water inlet 203 of the heat exchanger 2 through a pipe C34, the first hot water outlet 204 of the heat exchanger 2 is connected to a warm water tap 42, the first pressure relief valve 51 is connected in series on the pipe A31, the second pressure relief valve 52 is connected in series on the pipe B33 or the pipe C34, and a pressure relief port is provided on the top of the heating water tank 1, and a third pressure relief valve 53 is connected to the pressure relief port. The triple-protection drinking fountain of the utility model has a first pressure relief valve in series on the pipe A, and the first pressure relief valve is used to control the water pressure entering the heating water tank so as not to exceed the set value; a second pressure relief valve is connected in series on the pipe B or the pipe C, a pressure relief port is provided on the top of the heating water tank, and a third pressure relief valve is connected to the pressure relief port; the second pressure relief valve and the third pressure relief valve are used to ensure that the water pressure in the heating water tank does not exceed the threshold value at the same time; even if the second pressure relief valve fails, the third pressure relief valve can ensure safety, and the utility model has the advantage of high safety.

[0028] In this embodiment, a boiled water tap 43 is connected to the second hot water outlet 205 of the heat exchanger 2. With this design, the water dispenser can provide water of three temperatures, namely, boiling water, warm water, and boiled water, which can meet people's needs.

[0029] In this embodiment, the heat exchanger 2 comprises: a left half shell 21, a right half shell 22 and a heat exchange tube 23, a cavity 206 is provided between the left half shell 21 and the right half shell 22, the heat exchange tube 23 is sealed and connected in the cavity 206, the hot water inlet 203 is connected to one end of the heat exchange tube 23, the first hot water outlet 204 is connected in series to the heat exchange tube 23, and the second hot water outlet 205 is connected to the other end of the heat exchange tube 23. The heat exchanger adopts the above structure, and when the heat exchange tube 23 accumulates a lot of scale and the heat conduction effect is poor, the heat exchange tube can be easily replaced.

[0030] In this embodiment, a partition 24 is provided between the left half shell 21 and the right half shell 22 for dividing the cavity 206 into a plurality of heat exchange chambers 207, and each partition 24 is provided with a through hole 2401 for connecting the plurality of heat exchange chambers 207 end to end. The above design can increase the contact area between the heat exchange tube and the cold water, thereby improving the heat exchange efficiency.

[0031] In this embodiment, the heat exchange tube 23 includes: a heat exchange part 231 corresponding to the number of heat exchange chambers 207 and a connecting part 232 for connecting adjacent heat exchange parts 231 in series end to end. The heat exchange part 231 is located in the heat exchange chamber 207, and the connecting part 232 has a "U" shape.

[0032] In this embodiment, the connection portion 232 is positioned at the through hole 2401 , and a water groove 2402 is provided on the side wall of the through hole 2401 , which has the advantages of easy assembly and processing.

[0033] In this embodiment, the cold water inlet 201 is arranged on the left half shell 21 and communicates with one end of the heat exchange chamber 207 ; the cold water outlet 202 is arranged on the left half shell 21 and communicates with the other end of the heat exchange chamber 207 .

[0034] A sealing groove 208 is provided between the left half shell 21 and the right half shell 22, and the sealing groove 208 is arranged around the cavity 206. The sealing groove 208 can be filled with sealant or a sealing ring to prevent water leakage.

[0035] Bolts 25 are provided between the left half shell 21 and the right half shell 22 to lock the left half shell 21 and the right half shell 22 into one body, so as to facilitate assembly and disassembly of the heat exchanger.

[0036] The above examples are only used to further illustrate the technical content of the utility model, so that readers can understand it more easily, but it does not mean that the implementation methods of the utility model are limited to this. Any technical extension or re-creation made based on the utility model is protected by the utility model. The protection scope of the utility model shall be based on the claims.

Claims

1. Triple protection zero pressure water dispenser, including: A heating water tank (1) and a heat exchanger (2), characterized in that the cold water inlet (201) of the heat exchanger (2) is connected to a water source, the cold water outlet (202) of the heat exchanger (2) is connected to the water inlet of the heating water tank (1) through a pipe A (31), the water outlet of the heating water tank (1) is connected to a three-way joint (32), the first water outlet end of the three-way joint (32) is connected to a boiling water tap (41) through a pipe B (33), and the three-way joint (32) The second water outlet end of the heating water tank (1) is connected to the hot water inlet (203) of the heat exchanger (2) through a pipe C (34); the first hot water outlet (204) of the heat exchanger (2) is connected to a warm water tap (42); a first pressure relief valve (51) is connected in series to the pipe A (31); a second pressure relief valve (52) is connected in series to the pipe B (33) or the pipe C (34); a pressure relief port is provided at the top of the heating water tank (1); and a third pressure relief valve (53) is connected to the pressure relief port.

2. The triple protection zero-pressure drinking water dispenser according to claim 1 is characterized in that: The second hot water outlet (205) of the heat exchanger (2) is connected to a boiled water tap (43).

3. The triple protection zero-pressure water dispenser according to claim 2 is characterized in that: The heat exchanger (2) comprises: a left half shell (21), a right half shell (22) and a heat exchange tube (23); a cavity (206) is provided between the left half shell (21) and the right half shell (22); the heat exchange tube (23) is sealed and connected in the cavity (206); the hot water inlet (203) is connected to one end of the heat exchange tube (23); the first hot water outlet (204) is connected in series to the heat exchange tube (23); and the second hot water outlet (205) is connected to the other end of the heat exchange tube (23).

4. The triple protection zero-pressure water dispenser according to claim 3 is characterized in that: A partition (24) is provided between the left half shell (21) and the right half shell (22) for dividing the cavity (206) into a plurality of heat exchange chambers (207), and each of the partitions (24) is provided with a through hole (2401) for connecting the plurality of heat exchange chambers (207) end to end.

5. The triple protection zero-pressure water dispenser according to claim 4 is characterized in that: The heat exchange tube (23) comprises: a heat exchange portion (231) corresponding in number to the heat exchange chambers (207) and a connecting portion (232) for connecting adjacent heat exchange portions (231) end to end in series, and the heat exchange portion (231) is located in the heat exchange chamber (207).

6. The triple protection zero-pressure drinking water machine according to claim 5, characterized in that: The connecting portion (232) has a U-shape.

7. The triple protection zero-pressure drinking water machine according to claim 5, characterized in that: The connecting portion (232) is positioned at the through hole (2401), and a water channel (2402) is provided on the side wall of the through hole (2401).

8. The triple protection zero-pressure drinking water machine according to claim 4, characterized in that: The cold water inlet (201) is arranged on the left half shell (21) and is connected to one end of the heat exchange chamber (207); the cold water outlet (202) is arranged on the left half shell (21) and is connected to the other end of the heat exchange chamber (207).

9. The triple protection zero-pressure drinking water machine according to claim 4, characterized in that: A sealing groove (208) is provided between the left half shell (21) and the right half shell (22), and the sealing groove (208) is arranged around the cavity (206).

10. The triple protection zero-pressure drinking water machine according to claim 4, characterized in that: A bolt (25) is provided between the left half shell (21) and the right half shell (22) for locking the left half shell (21) and the right half shell (22) into one body.

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