Efficient stepping non-pressure double-capacity boiled water and warm boiled water integrated water dispenser

Abstract

The efficient stepping non-pressure double-capacity boiled water and warm boiled water integrated water dispenser comprises a boiled water tank and a warm boiled water tank, a food-grade heat exchange pipe is arranged in the warm boiled water tank, a first water inlet and a first water outlet are formed in the two ends of the food-grade heat exchange pipe, and the first water inlet and the first water outlet are communicated with a water inlet electric control valve and the interior of the boiled water tank respectively. A first heating pipe and a second heating pipe are arranged in the warm boiled water tank and the boiled water tank respectively, and a boiled water outlet is formed in the boiled water tank and communicated with the warm boiled water tank through a boiled water pipe. The warm boiled water tank is arranged, the food-grade heat exchange pipe for circulating purified water is arranged in the warm boiled water tank, boiled water in the boiled water tank is injected into the warm boiled water tank to exchange heat with the food-grade heat exchange pipe, the boiled water is cooled, warm boiled water is formed, normal-temperature purified water is subjected to heat exchange to form warm water, the warm water can be boiled quickly after entering the boiled water tank, and boiled water and warm boiled water can be prepared quickly. Meanwhile, warm boiled water is stored in the water tank, the warm water supply amount is sufficient, and the requirement for the water taking amount in schools is particularly met.

Description

Technical Field

[0001] This utility model relates to a water dispenser, and more particularly to a high-efficiency step-type pressureless dual-capacity hot and warm water dispenser. Background Technology

[0002] Current step-by-step heating systems start heating from the tap water temperature. Moreover, many test data show that the initial heating process from 10℃ to 45℃ is the most power-consuming. Furthermore, traditional step-by-step systems cannot meet the demand for large-capacity warm water or even produce warm water simultaneously. Therefore, in places with a high demand for warm water, such as schools, hospitals, and military units, it is often necessary to install a separate warm water machine.

[0003] In addition, current heat exchangers use a double-pipe system with a hot water pipe surrounding a cold water pipe. This results in unstable heat exchange efficiency, significant heat loss from the outer pipe, and a small flow rate per cycle, which cannot meet the requirement of large-volume water intake in a short period of time.

[0004] Chinese Patent Publication No. CN2022204424050, published on September 27, 2022, discloses a partial heating structure with a warm water heating function, comprising: a first water tank, a heat exchange tube, a second water tank, and a heating structure; the first water tank has a first water outlet and a first water inlet, the first water inlet being connected to the outside, the heat exchange tube being installed in the first water tank, and the outlet of the heat exchange tube being connected to the outside; the second water tank has a hot water outlet, a heat exchange outlet, and a second water inlet, the second heating structure being installed in the second water tank, the second water inlet being connected to the first water outlet, the heat exchange outlet being connected to the inlet of the heat exchange tube, and the hot water outlet being connected to the outside. This structure does not store warm water, therefore, it is not suitable for continuously dispensing large quantities of warm water; especially when used on school campuses, where warm water is frequently used and water is mainly dispensed during breaks, this model is not suitable for use on school campuses. Utility Model Content

[0005] The purpose of this utility model is to provide a high-efficiency step-type pressureless dual-capacity hot and warm water dispenser with a simple and reasonable structure, which can continuously supply warm water and meet the needs of occasions such as when students need to take a large amount of warm water during breaks.

[0006] The purpose of this utility model is achieved as follows:

[0007] A high-efficiency step-type pressureless dual-capacity hot and warm water dispenser includes a hot water tank and a warm water tank. The warm water tank is equipped with a food-grade heat exchange tube, with a first inlet and a first outlet at both ends. The first inlet and the first outlet are respectively connected to the outside of the warm water tank and are connected to the inlet electric control valve and the inside of the hot water tank. The warm water tank and the hot water tank are respectively equipped with a first heating element and a second heating element. The hot water tank is equipped with a hot water outlet, which is connected to the warm water tank through a hot water pipe. The warm water tank and the hot water tank are respectively equipped with a warm water outlet and a hot water outlet.

[0008] The objective of this utility model can also be achieved by the following technical measures:

[0009] As a more specific embodiment, the surfaces of the warm water tank and the hot water tank are respectively provided with a first snap-action thermostat and a second snap-action thermostat, and the interiors of the warm water tank and the hot water tank are respectively provided with a first temperature sensor and a second temperature sensor for detecting water temperature data; the first snap-action thermostat and the second snap-action thermostat are connected in series with the power supply circuits of the first heating element and the second heating element, respectively.

[0010] As a further embodiment, the hot water outlet is located on the lower side wall of the hot water tank. A hot water diversion pipe is installed inside the tank, with its lower end connected to the inner end of the hot water outlet, and its upper end higher than the hot water inlet. A third temperature sensor is also installed inside the hot water tank. The second temperature sensor is installed below and close to the height of the hot water inlet, and the third temperature sensor is installed below and close to the height of the upper end of the hot water diversion pipe. The warm water inlet is located on the lower side wall of the warm water tank, and the first temperature sensor is installed below and close to the height of the warm water inlet.

[0011] As a further embodiment, the food-grade heat exchange tube is spirally wound and arranged in a horizontal cylindrical shape, with the first heating element extending into the inner side of the cylindrical shape of the food-grade heat exchange tube. Alternatively, the food-grade heat exchange tube is spirally wound, and the first heating element is installed from the bottom of the warm water tank.

[0012] As a further solution, a cover plate is provided above the food-grade heat exchange tube inside the warm water tank.

[0013] As a further embodiment, the bottom of the warm water tank is provided with a hot water inlet, and the hot water pipe is connected to the warm water tank through a one-way valve and the hot water inlet; the bottom of the hot water tank is provided with a clean water inlet, and the first outlet of the food-grade heat exchange tube is connected to the clean water inlet through a clean water pipe and is connected to the inside of the hot water tank through the clean water inlet.

[0014] As a further embodiment, the interior of the warm water tank is provided with a first baffle above the hot water inlet, and / or the interior of the hot water tank is provided with a second baffle above the purified water inlet.

[0015] As a further solution, the hot water tank is equipped with a high water level sensor and a low water level sensor; the height of the low water level sensor is lower than the height of the hot water inlet.

[0016] As a further embodiment, the bottom of the warm water tank and the hot water tank are respectively provided with a first vent and a second vent. The inner ends of the first vent and the second vent are respectively connected to a first vent pipe and a second vent pipe. The upper ends of the first vent pipe and the second vent pipe lead to the upper inner part of the warm water tank and the hot water tank, respectively. The upper end of the second vent pipe is higher than the height of the high water level sensor.

[0017] As a further embodiment, the warm water tank and the hot water tank are horizontally distributed; the warm water tank and the hot water tank are atmospheric pressure water tanks and are wrapped with an external insulation layer; the bottom of the warm water tank and the hot water tank are respectively provided with a first drain outlet and a second drain outlet.

[0018] The beneficial effects of this utility model are as follows:

[0019] (1) This utility model is equipped with a warm water tank, and a food-grade heat exchange tube for circulating purified water is provided in the warm water tank. When the water dispenser is working stably, the boiling water in the boiling water tank is injected into the warm water tank and exchanges heat with the food-grade heat exchange tube to achieve the cooling of the boiling water and form warm water. The room temperature purified water is heated to form warm water. The warm water can be boiled quickly when it enters the boiling water tank, so as to achieve the rapid preparation of boiling water and warm water. At the same time, because the warm water is stored in the water tank, the supply of warm water is sufficient, especially to meet the water demand during school breaks.

[0020] (2) The hot water tank of this utility model adopts step heating, that is, after the water level is higher than the height of the low water level sensor, heating begins until the water level reaches the height of the high water level sensor, so as to improve the heating efficiency.

[0021] (3) The warm water tank of this utility model is equipped with a first heating tube, which can start heating when the water temperature is lower than the set temperature range and no boiling water is prepared.

[0022] (4) The heat exchange tube of the present invention is set in the water tank, and all the heat in the water tank is utilized, making the heat exchange effect with the heat exchange tube more efficient and energy-saving; in addition, the heat exchange tube is made of food-grade material, drinking water can be stored in the water tank, and the drinking water after heat exchange can reach the warm water level and can be drunk directly.

[0023] (5) The water in the warm water tank of the present invention is boiling water. It is fully heated by the large cold water coil. The water in the warm water tank is about 45°C. The water entering the boiling water tank (the water in the coil) is also about 45°C. It can be boiled by heating for a short time, which is more energy-efficient. The warm water tank and the boiling water tank are connected by a boiling water pipe and a one-way valve, which meets the demand for a large amount of boiling water and the demand for warm water. It can provide boiling water, warm water and room temperature water for a large capacity. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the back structure of the water channel in one embodiment of the present invention.

[0025] Figure 2 for Figure 1 Front view of the structure.

[0026] Figure 3 This is a schematic diagram of the left side of the medium-temperature boiling water tank of this utility model.

[0027] Figure 4 This is a schematic diagram of the right side of the structure of the medium-temperature boiling water tank of this utility model.

[0028] Figure 5 This is a top view of the structure of the medium-temperature boiling water tank of this utility model.

[0029] Figure 6 This is a top-view structural diagram of the medium-temperature boiling water tank of this utility model.

[0030] Figure 7 This is a schematic diagram of the right side of the water tank in this utility model.

[0031] Figure 8 This is a top view of the water tank structure of this utility model.

[0032] Figure 9 This is a schematic diagram of the top-view structure of the water tank in this utility model.

[0033] Figure 10 This is a schematic diagram of another embodiment of the medium-temperature boiling water tank of the present invention. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0035] See Figures 1 to 9As shown, a high-efficiency step-type pressureless dual-capacity hot and warm water dispenser includes a hot water tank 6, a warm water tank 1, and a control circuit. The warm water tank 1 is equipped with a food-grade heat exchange tube 3. The two ends of the food-grade heat exchange tube 3 are provided with a first water inlet 31 and a first water outlet 32. The first water inlet 31 and the first water outlet 32 ​​are respectively connected to the outside of the warm water tank 1 and are respectively connected to the water inlet electric control valve 4 and the inside of the hot water tank 6. The warm water tank 1 and the hot water tank 6 are respectively equipped with a first heating tube 2 and a second heating tube 7. The hot water tank 6 is provided with a hot water outlet 65, which is connected to the warm water tank 1 through a hot water pipe 20. The warm water tank 1 and the hot water tank 6 are respectively provided with a warm water outlet 12 and a hot water outlet 69. The first heating element 2 and the second heating element 7 are electrically connected to the control circuit, respectively; the warm water outlet 12 and the hot water outlet 69 are connected to the warm water nozzle and the hot water nozzle, respectively, through the first solenoid valve and the second solenoid valve, respectively, not shown in the figure.

[0036] The surfaces of the warm water tank 1 and the hot water tank 6 are respectively provided with a first snap-action thermostat 18 and a second snap-action thermostat 66. The warm water tank 1 and the hot water tank 6 are respectively provided with a first temperature sensor 131 and a second temperature sensor 673 for detecting water temperature data. The first snap-action thermostat 18 and the second snap-action thermostat 66 are connected in series with the power supply circuits of the first heating element 2 and the second heating element 7, respectively. The first temperature sensor 131 and the second temperature sensor 673 are electrically connected to the control circuit, respectively.

[0037] The hot water outlet 65 is located on the lower side wall of the hot water tank 6. A hot water inlet pipe 651 is installed inside the hot water tank 6, with its lower end connected to the inner end of the hot water outlet 65. The upper end of the hot water inlet pipe 651 is higher than the height of the hot water intake 69. A third temperature sensor 674 is also installed inside the hot water tank 6. The second temperature sensor 673 is installed below and close to the height of the hot water intake 69, and the third temperature sensor 674 is installed below and close to the height of the upper end of the hot water inlet pipe 651. A warm water intake 6912 is located on the lower side wall of the warm water tank 1, with the first temperature sensor 131 installed below and close to the height of the warm water intake 6912.

[0038] The internal water temperature of the warm water tank 1 is obtained by the first temperature sensor 131, and the internal water temperature of the hot water tank 6 is obtained by the second temperature sensor 673.

[0039] The food-grade heat exchange tube 3 is spirally wound and arranged in a horizontal cylindrical shape, with the first heating element 2 extending into the inner side of the cylindrical shape of the food-grade heat exchange tube 3. A cover plate 14 is provided inside the warm water tank 1 above the food-grade heat exchange tube 3. The cover plate reduces the upward radiation of the hot water temperature at the food-grade heat exchange tube 3, resulting in higher heat exchange efficiency.

[0040] Or, combine Figure 10 As shown, the food-grade heat exchange tube 3 is spirally wound and arranged in a longitudinal cylindrical shape, and the first heating tube 2 extends from the bottom of the warm water tank 1 to the inner side of the cylindrical shape of the food-grade heat exchange tube 3.

[0041] The bottom of the warm water tank 1 is provided with a hot water inlet 15, and the hot water pipe 20 is connected to the warm water tank 1 through a one-way valve 5 and the hot water inlet 15; the bottom of the hot water tank 6 is provided with a clean water inlet 62, and the first outlet 32 ​​of the food-grade heat exchange pipe 3 is connected to the clean water inlet 62 through the clean water pipe 10 and is connected to the inside of the hot water tank 6 through the clean water inlet 62.

[0042] The warm water tank 1 has a first baffle 151 above the hot water inlet 15, and the hot water tank 6 has a second baffle 621 above the clean water inlet 62. The baffles can prevent the water from rushing upwards and the water flow after being blocked by the baffles is spread out in the plane direction, so that the heating is more uniform.

[0043] The hot water tank 6 is equipped with a high water level sensor 81 and a low water level sensor 82; the height of the low water level sensor 82 is lower than the height of the hot water inlet 69.

[0044] The bottom of the warm water tank 1 and the hot water tank 6 are respectively provided with a first vent 17 and a second vent 64. The inner ends of the first vent 17 and the second vent 64 are respectively connected to a first vent pipe 171 and a second vent pipe 641. The upper ends of the first vent pipe 171 and the second vent pipe 641 lead to the upper inner part of the warm water tank 1 and the hot water tank 6, respectively. The upper end of the second vent pipe 641 is higher than the height of the high water level sensor 81.

[0045] The warm water tank 1 and the hot water tank 6 are horizontally distributed; the warm water tank 1 and the hot water tank 6 are atmospheric pressure water tanks and are wrapped with an external heat insulation layer; the bottom of the warm water tank 1 and the hot water tank 6 are respectively provided with a first drain outlet 16 and a second drain outlet 63.

[0046] The warm water tank 1 has a first mounting bracket 11 on the back and a first grounding electrode 19 on the front; the hot water tank 6 has a second mounting bracket 61 on the back and a second grounding electrode 68 on the front.

[0047] Its working principle is as follows: After powering on, it heats and fills water in a step-by-step mode. When the low water level sensor 82 does not detect water, the water inlet control valve 4 opens and the second heating element 7 stops heating until the low water level sensor 82 detects water. When the second heating element 7 is working, the second temperature sensor 673 detects that the water temperature in the hot water tank 6 is lower than the set water temperature and stops water filling. When the second temperature sensor 673 detects that the water temperature in the hot water tank 6 reaches the set water temperature, the water inlet control valve 4 continues to open to fill water. This cycle continues until the high water level sensor 81 detects water.

[0048] After the boiling water tank 6 reaches the high water level, if the first temperature sensor 131 of the warm water tank 1 detects that the water temperature has reached the heat preservation temperature, it controls the first heating element 2 to start heating; if the temperature of the warm water tank 1 is lower than the heat preservation set temperature by a certain value: if the temperature of the boiling water tank 6 has reached the boiling water set temperature, the first heating element 2 stops heating; if the temperature of the boiling water tank 6 is lower than the boiling water set temperature by a certain value, it controls the first heating element 2 to start heating; when there is water in the warm water tank 1, the boiling water tank 6 automatically controls the second heating element 7 to heat according to the set boiling water temperature.

[0049] In addition, when the warm water tank 1 is empty, the first heating element 2 of the warm water tank 1 stops heating; when the warm water tank 1 has water and the boiling water tank 6 does not have a high water level, the first heating element 2 of the warm water tank 1 stops heating while the second heating element 7 of the boiling water tank 6 is heating; when the second heating element 7 of the boiling water tank 6 is not heating, the warm water tank 1 automatically controls the heating of the first heating element 2 according to the temperature set for heat preservation, and stops heating when the first temperature sensor 131 detects that the water temperature has reached the heat preservation temperature, and starts heating when it is lower than a certain value of the heat preservation temperature; when the boiling water tank 6 has a high water level, the warm water tank 1 stops heating when water is entering, and automatically controls the heating of the first heating element 2 according to the temperature set for heat preservation when no water is entering.

[0050] When the hot water tank 6 has no low water level, the inlet water control valve 4 opens; when the hot water tank 6 has a low water level but no high water level, the inlet water control valve 4 opens and closes in a step-by-step mode; when the hot water tank 6 has both high and low water levels and the warm water tank 1 has no water, the inlet water control valve 4 opens; when the hot water tank 6 has both high and low water levels and the warm water tank 1 has water, and the water temperature in the warm water tank 1 is higher than the set insulation temperature by a certain value, the inlet water control valve 4 opens.

[0051] Combination Figure 1 As shown, arrow a indicates the direction of purified water, arrow b indicates the direction of water outlet from the food-grade heat exchange tube, arrow c indicates the direction of water inlet from the boiling water tank 6, arrows d and e indicate the direction of boiling water flowing from the boiling water tank 6 to the warm water tank 1; arrow f indicates the direction of water outlet from the warm water tank 1, arrow g indicates the direction of venting or overflowing from the warm water tank 1; arrow h indicates the direction of water outlet from the boiling water tank 6, and arrow i indicates the direction of venting or overflowing from the boiling water tank 6.

[0052] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A high-efficiency step-type pressureless dual-capacity hot and warm water dispenser, comprising a hot water tank (6), characterized in that: It also includes a warm water tank (1), which is equipped with a food-grade heat exchange tube (3). The food-grade heat exchange tube (3) has a first inlet (31) and a first outlet (32) at both ends. The first inlet (31) and the first outlet (32) are respectively connected to the outside of the warm water tank (1) and are respectively connected to the water inlet electric control valve (4) and the inside of the hot water tank (6). The warm water tank (1) and the hot water tank (6) are respectively equipped with a first heating tube (2) and a second heating tube (7). The hot water tank (6) is equipped with a hot water outlet (65), which is connected to the warm water tank (1) through a hot water pipe (20). The warm water tank (1) and the hot water tank (6) are respectively equipped with a warm water outlet (12) and a hot water outlet (69).

2. The high-efficiency step-type pressureless dual-capacity hot and warm water dispenser according to claim 1, characterized in that: The surface of the warm water tank (1) and the hot water tank (6) is provided with a first snap-action thermostat (18) and a second snap-action thermostat (66), respectively. The warm water tank (1) and the hot water tank (6) are respectively provided with a first temperature sensor (131) and a second temperature sensor (673) for detecting water temperature data. The first snap-action thermostat (18) and the second snap-action thermostat (66) are connected in series with the power supply circuits of the first heating tube (2) and the second heating tube (7), respectively.

3. The high-efficiency step-type pressureless dual-capacity hot and warm water dispenser according to claim 2, characterized in that: The hot water outlet (65) is located on the lower side wall of the hot water tank (6). The hot water tank (6) is provided with a hot water diversion pipe (651). The lower end of the hot water diversion pipe (651) is connected to the inner end of the hot water outlet (65). The upper end of the hot water diversion pipe (651) is higher than the height of the hot water intake (69). The hot water tank (6) is also provided with a third temperature sensor (674). The installation height of the second temperature sensor (673) is located below and close to the height of the hot water intake (69). The installation height of the third temperature sensor (674) is located below and close to the height of the upper end of the hot water diversion pipe (651). The warm water inlet (12) is located on the lower side wall of the warm water tank (1), and the first temperature sensor (131) is installed below and close to the height of the warm water inlet (12).

4. The high-efficiency step-type pressureless dual-capacity hot and warm water dispenser according to claim 1, characterized in that: The food-grade heat exchange tube (3) is spirally wound and in a horizontal cylindrical shape, with the first heating tube (2) extending into the inner side of the cylindrical shape of the food-grade heat exchange tube (3); or, the food-grade heat exchange tube (3) is spirally wound, with the first heating tube (2) installed from the bottom of the warm water tank (1).

5. The high-efficiency stepping pressureless dual-capacity hot and warm water dispenser according to claim 1 or 4, characterized in that: The warm water tank (1) is provided with a cover plate (14) above the food-grade heat exchange tube (3).

6. The high-efficiency step-type pressureless dual-capacity hot and warm water dispenser according to claim 3, characterized in that: The bottom of the warm water tank (1) is provided with a hot water inlet (15), and the hot water pipe (20) is connected to the warm water tank (1) through a one-way valve (5) and the hot water inlet (15); the bottom of the hot water tank (6) is provided with a clean water inlet (62), and the first outlet (32) of the food-grade heat exchange tube (3) is connected to the clean water inlet (62) through the clean water pipe (10) and is connected to the inside of the hot water tank (6) through the clean water inlet (62).

7. The high-efficiency step-type pressureless dual-capacity hot and warm water dispenser according to claim 6, characterized in that: The warm water tank (1) is provided with a first baffle (151) above the hot water inlet (15), and / or the hot water tank (6) is provided with a second baffle (621) above the clean water inlet (62).

8. The high-efficiency step-type pressureless dual-capacity hot and warm water dispenser according to claim 6, characterized in that: The hot water tank (6) is equipped with a high water level sensor (81) and a low water level sensor (82); the height of the low water level sensor (82) is lower than the height of the hot water inlet (69).

9. The high-efficiency step-type pressureless dual-capacity hot and warm water dispenser according to claim 8, characterized in that: The bottom of the warm water tank (1) and the hot water tank (6) are respectively provided with a first vent (17) and a second vent (64). The inner ends of the first vent (17) and the second vent (64) are respectively connected to a first vent pipe (171) and a second vent pipe (641). The upper ends of the first vent pipe (171) and the second vent pipe (641) are respectively connected to the upper inner part of the warm water tank (1) and the hot water tank (6). The upper end of the second vent pipe (641) is higher than the height of the high water level sensor (81).

10. The high-efficiency step-type pressureless dual-capacity hot and warm water dispenser according to claim 1, characterized in that: The warm water tank (1) and the hot water tank (6) are horizontally distributed; the warm water tank (1) and the hot water tank (6) are atmospheric pressure water tanks and are wrapped with an external heat insulation layer; the bottom of the warm water tank (1) and the hot water tank (6) are respectively provided with a first drain outlet (16) and a second drain outlet (63).

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