Hot water preparation device

Abstract

A hot water preparation device comprises a hot water storage tank, an outlet of the hot water storage tank is connected with an inlet of a first discharging pump through a pipeline, an outlet of the first discharging pump is connected with an inlet of a first heating device through a pipeline, and an outlet of the first heating device is connected with an inlet of a first water return valve through a pipeline. A second temperature sensor and a first water consumption point are sequentially arranged on the pipeline between the first heating device and the first water return valve, and an outlet of the first water return valve is connected with an inlet of the hot water storage tank through a pipeline; an outlet of the hot water storage tank is connected with an inlet of a second discharging pump through a pipeline; and an outlet of the second discharging pump is connected with an inlet of a second heating device through a pipeline. According to the utility model, the plurality of heating pipelines and the plurality of temperature sensors are arranged, so that a plurality of different temperature requirements are met through one hot water storage tank, the occupied area is reduced, and the energy waste is reduced.

Description

Technical Field

[0001] This utility model relates to the field of physics, and more particularly to heating devices, especially a hot water preparation device. Background Technology

[0002] Dairy and beverage factories use different ingredients in their product processing to meet varying taste and nutritional needs. To improve mixing efficiency and enhance mixing effectiveness, hot water is required. Different ingredients and different mixing stages require different temperatures of hot water. Current technology uses multiple hot water storage tanks to store water at different temperatures, which results in a large footprint, significant energy waste, and increased equipment and production costs. Summary of the Invention

[0003] The purpose of this invention is to provide a hot water preparation device that solves the technical problem in the prior art of using multiple hot water storage tanks to store hot water at different temperatures, which results in a large footprint and significant energy waste.

[0004] The present invention provides a hot water preparation device, including a hot water storage tank, wherein the water inlet of the hot water storage tank is connected to a water supply valve via a pipe, and the hot water storage tank is equipped with a liquid level detection device and a first temperature sensor.

[0005] The outlet of the hot water storage tank is connected to the inlet of a first discharge pump via a pipe. The outlet of the first discharge pump is connected to the inlet of a first heating device via a pipe. The outlet of the first heating device is connected to the inlet of a first return valve via a pipe. A second temperature sensor and a first water point are sequentially installed on the pipe between the first heating device and the first return valve. The outlet of the first return valve is connected to the inlet of the hot water storage tank via a pipe.

[0006] The outlet of the hot water storage tank is connected to the inlet of a second discharge pump via a return pipe. The outlet of the second discharge pump is connected to the inlet of a second heating device via a pipe. The outlet of the second heating device is connected to the inlet of a second return valve via a pipe. A third temperature sensor and a second water point are sequentially installed on the pipe between the second heating device and the second return valve. The outlet of the second return valve is connected to the inlet of the hot water storage tank via a pipe. The outlet of the hot water storage tank is also connected to a drain valve via a pipe.

[0007] The signal output terminals of the liquid level detection device, the first temperature sensor, the second temperature sensor, and the third temperature sensor, as well as the control terminals of the water supply valve, the first discharge pump, the second discharge pump, the first heating device, the second heating device, the first return water valve, the second return water valve, and the drain valve are all connected to a controller.

[0008] Furthermore, the liquid level detection device includes a high liquid level switch, a low liquid level switch, and a liquid level sensor.

[0009] Furthermore, both the first discharge pump and the second discharge pump are centrifugal pumps.

[0010] Furthermore, both the first heating device and the second heating device are tubular heat exchangers. The heat medium inlet of the tubular heat exchanger is connected to a steam inlet pipe through a temperature regulating valve and a steam shut-off valve, and the heat medium outlet of the tubular heat exchanger is connected to an outlet pipe through a steam trap and a check valve.

[0011] Furthermore, the cleaning inlet of the hot water storage tank is connected to a cleaning inlet pipe via a cleaning inlet valve, and the cleaning outlet of the hot water storage tank is connected to a cleaning outlet pipe via a cleaning outlet valve.

[0012] Compared with existing technologies, the advantages of this invention are positive and significant. This invention provides a hot water preparation device that, by incorporating multiple heating pipelines and temperature sensors, can meet multiple different temperature requirements with a single hot water storage tank, reducing floor space and energy waste. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a hot water preparation device according to the present invention. Detailed Implementation

[0014] The present invention will be further described below with reference to embodiments, but the present invention is not limited to these embodiments. Any similar variations using the present invention should be included within the protection scope of the present invention. The use of directions such as up, down, front, back, left, right, center, inside, and outside in the present invention is only for the convenience of clear description and is not intended to limit the technical solution of the present invention.

[0015] like Figure 1 As shown, a hot water preparation device of the present invention includes a hot water storage tank 1. The water inlet of the hot water storage tank 1 is connected to a water supply valve 6 through a pipe. The hot water storage tank 1 is equipped with a liquid level detection device and a first temperature sensor 3.

[0016] The outlet of the hot water storage tank 1 is connected to the inlet of a first discharge pump 11 via a pipe. The outlet of the first discharge pump 11 is connected to the inlet of a first heating device 15 via a pipe. The outlet of the first heating device 15 is connected to the inlet of a first return valve 10 via a pipe. A second temperature sensor 18 and a first water point 26 are sequentially installed on the pipe between the first heating device 15 and the first return valve 10. The outlet of the first return valve 10 is connected to the inlet of the hot water storage tank 1 via a pipe.

[0017] The outlet of the hot water storage tank 1 is connected to the inlet of a second discharge pump 12 via a return pipe. The outlet of the second discharge pump 12 is connected to the inlet of a second heating device 21 via a pipe. The outlet of the second heating device 21 is connected to the inlet of a second return valve 9 via a pipe. A third temperature sensor 24 and a second water point 27 are sequentially installed on the pipe between the second heating device 21 and the second return valve 9. The outlet of the second return valve 10 is connected to the inlet of the hot water storage tank 1 via a pipe. The outlet of the hot water storage tank 1 is also connected to a drain valve 25 via a pipe.

[0018] The signal output terminals of the liquid level detection device, the first temperature sensor 3, the second temperature sensor 18, the third temperature sensor 24, as well as the control terminals of the water supply valve 6, the first discharge pump 11, the second discharge pump 12, the first heating device 15, the second heating device 21, the first return water valve 10, the second return water valve 10, and the drain valve 25 are all connected to a controller.

[0019] Furthermore, the liquid level detection device includes a high liquid level switch 2, a low liquid level switch 4, and a liquid level sensor 5.

[0020] Furthermore, both the first discharge pump 11 and the second discharge pump 12 are centrifugal pumps.

[0021] Furthermore, both the first heating device 15 and the second heating device 21 are tubular heat exchangers. The heat medium inlet of the tubular heat exchanger is connected to a steam inlet pipe through a temperature regulating valve 14 and a steam shut-off valve 13, and the heat medium outlet of the tubular heat exchanger is connected to an outlet pipe through a steam trap 16 and a one-way valve 17.

[0022] Furthermore, the cleaning inlet of the hot water storage tank 1 is connected to a cleaning inlet pipe via a cleaning inlet valve 7, and the cleaning outlet of the hot water storage tank 1 is connected to a cleaning outlet pipe via a cleaning outlet valve 8.

[0023] Specifically, the first water point 26 includes a mixing area, and the second water point 27 includes a sterilization tank and a batching area.

[0024] Specifically, the specific structure and principle of the components such as the water supply valve 6, liquid level detection device, temperature sensor, discharge pump, return water valve, heating device, drain valve 25, and controller in this embodiment, as well as other aspects not described in detail, all adopt well-known solutions in the prior art, which are already understood by those skilled in the art and will not be elaborated here.

[0025] The working principle of this embodiment:

[0026] Before operation, a minimum required hot water temperature is set. First, the water supply valve 6 is opened to replenish water to the hot water storage tank 1. This is controlled by the high-level switch 2, and replenishment stops when the high level is reached. Once replenishment is complete, the first discharge pump 11 and the second discharge pump 12 begin operation, as do the first heating device 15 and the second heating device 21. The steam shut-off valve 13 and the temperature regulating valve 14 are opened, allowing steam to be introduced. This steam is then heated using a tubular heat exchanger, and finally returned to the hot water storage tank 1 via the return valve 9. This process is repeated cyclically. During the preparation process, the second temperature sensor 18 and the third temperature sensor 24 at the outlet of the tubular heat exchanger are mutually calibrated with the first temperature sensor 3 on the hot water storage tank 1 until all reach the set temperature, at which point hot water preparation stops. At this point, depending on production needs, the two cyclic preparation lines can supply water separately, achieving a total of three different temperatures to the target. The first temperature is the water temperature in the hot water storage tank 1 after being heated by the first heating device 15 and the second heating device 21 (e.g., the first temperature is 30°C). Second temperature: Water in hot water storage tank 1 at the first temperature is heated to the second temperature (from 30℃ to 40℃) after being heated by the first heating device 15. Third temperature: Water in hot water storage tank 1 at the first temperature is heated to the third temperature (from 30℃ to 50℃) after being heated by the second heating device 21. After the water supply is completed, the drain valve 25 is opened to drain the remaining hot water in hot water storage tank 1. The cleaning inlet valve 7 and the cleaning outlet valve 8 are opened to introduce cleaning fluid to clean hot water storage tank 1 and pipelines, ensuring that the entire hot water storage tank 1 and pipelines are clean and sterile.

[0027] The high level switch 2 can control the opening of the water supply valve 6, the low level switch 4 can control the liquid level when the hot water storage tank 1 is emptied, and the liquid level sensor 5 can set the liquid level for water supply when the hot water storage tank 1 is low, so as to ensure that the liquid level of the hot water storage tank 1 is always full to meet production needs and ensure the stability of the liquid level in the tank.

[0028] The temperature regulating valve 14 can be linked with the second temperature sensor 18 and the third temperature sensor 24 to heat water that is not at the required temperature to the required temperature.

[0029] One-way valve 17 prevents condensate from flowing back into the tubular heat exchanger and creating a steam-water mixture. Steam trap 16 promptly removes the condensate generated from steam condensation, improving heat exchange efficiency.

Claims

1. A hot water preparation apparatus, characterized in that, The hot water storage tank is connected with a water supplement valve through a pipeline at a water supplement inlet, and is provided with a liquid level detection device and a first temperature sensor; The outlet of the hot water storage tank is connected with an inlet of a first discharge pump through a pipeline, the outlet of the first discharge pump is connected with an inlet of a first heating device through a pipeline, the outlet of the first heating device is connected with an inlet of a first backwater valve through a pipeline, and the pipeline between the first heating device and the first backwater valve is sequentially provided with a second temperature sensor and a first water use point, and the outlet of the first backwater valve is connected with the inlet of the hot water storage tank through a pipeline; The outlet of the hot water storage tank is also connected with an inlet of a second discharge pump through a pipeline, the outlet of the second discharge pump is connected with an inlet of a second heating device through a pipeline, the outlet of the second heating device is connected with an inlet of a second backwater valve through a pipeline, the pipeline between the second heating device and the second backwater valve is sequentially provided with a third temperature sensor and a second water use point, the outlet of the second backwater valve is connected with the inlet of the hot water storage tank through a pipeline, and the outlet of the hot water storage tank is also connected with a drain valve through a pipeline. The signal output ends of the liquid level detection device, the first temperature sensor, the second temperature sensor and the third temperature sensor, and the control ends of the water supplement valve, the first discharge pump, the second discharge pump, the first heating device, the second heating device, the first backwater valve, the second backwater valve and the drain valve are connected with a controller.

2. A hot water preparation apparatus according to claim 1, characterized in that The liquid level detection device comprises a high liquid level switch, a low liquid level switch and a liquid level sensor.

3. A hot water preparation apparatus according to claim 1, characterized in that The first discharge pump and the second discharge pump are both centrifugal pumps.

4. A hot water preparation apparatus according to claim 1, characterized in that The first heating device and the second heating device are both pipe heat exchangers, the hot medium inlet of the pipe heat exchanger is connected with a steam inlet pipeline through a temperature regulating valve and a steam stop valve, and the hot medium outlet of the pipe heat exchanger is connected with an outlet pipeline through a trap and a check valve.

5. A hot water preparation apparatus according to claim 1, characterized in that The cleaning inlet of the hot water storage tank is connected with a cleaning inlet pipeline through a cleaning inlet valve, and the cleaning outlet of the hot water storage tank is connected with a cleaning outlet pipeline through a cleaning outlet valve.

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