Water dispenser with cold water circulating waterway

Abstract

The utility model discloses a water dispenser with a cold water circulating waterway. The water dispenser comprises a normal-temperature water tank, a cold container, a cold water supply waterway, a cold water feedback waterway, a circulating pump, a temperature sensor and an MCU (Microprogrammed Control Unit), the normal-temperature water tank is used for storing normal-temperature water, and the cold container is communicated with the normal-temperature water tank and used for cooling the normal-temperature water The cold water supply waterway is connected with the cold container and used for providing cold water for users. The cold water feedback waterway is connected with the cold water supply waterway and the normal-temperature water tank and used for feeding cold water in the cold container back to the normal-temperature water tank. The circulating pump is connected with the cold water feedback waterway and used for circulating cold water in the cold container to the normal-temperature water tank. The temperature sensor is arranged in the normal-temperature water tank and used for monitoring the water temperature in the normal-temperature water tank. The MCU control unit is used for receiving monitoring signals of the temperature sensor and controlling starting and stopping of the circulating pump and opening and closing of the cold water electromagnetic valve.

Description

Technical Field

[0001] The utility model relates to the field of water dispensers, in particular to a water dispenser with a cold water circulation waterway. Background Art

[0002] Traditional water dispensers usually adopt the direct refrigeration method, that is, directly cool the water through a refrigeration device, and then provide cold water to users through the cold water outlet. This method has the following disadvantages: low refrigeration efficiency: the direct refrigeration method needs to cool a large amount of normal temperature water, consuming a high amount of energy and having a low refrigeration efficiency. Large water temperature fluctuation: due to the limited refrigeration capacity of the refrigeration device, when users take a large amount of cold water, the water temperature in the normal temperature water tank is likely to fluctuate, resulting in unstable water temperature. The first glass of water is not cold: since there is a large amount of normal temperature water in the cold water supply waterway, when users receive cold water, they need to wait for a period of time to receive cold water, and the first glass of water is often not cold. Content of the Utility Model

[0003] In view of the above-mentioned defects of the prior art, the utility model provides a water dispenser with a cold water circulation waterway, including: a normal temperature water tank for storing normal temperature water; a cold storage tank communicated with the normal temperature water tank for cooling the normal temperature water; a cold water supply waterway connected to the cold storage tank for providing cold water to users; a cold water feedback waterway connected to the cold water supply waterway and the normal temperature water tank for feeding back the cold water in the cold storage tank to the normal temperature water tank; a circulation pump connected to the cold water feedback waterway for circulating the cold water in the cold storage tank to the normal temperature water tank; a temperature sensor arranged in the normal temperature water tank for monitoring the water temperature in the normal temperature water tank; an MCU control unit for receiving the monitoring signal of the temperature sensor and controlling the start and stop of the circulation pump and the opening and closing of a cold water solenoid valve, and further including a cold water solenoid valve arranged on the cold water supply waterway for controlling the output of cold water.

[0004] Further, the MCU control unit is configured to: when it is detected that the water temperature in the normal temperature water tank exceeds the preset temperature, start the circulation pump to add the cold water in the cold storage tank into the normal temperature water tank, so that the water temperature in the normal temperature water tank drops to the preset temperature, and then stop the circulation pump, so as to keep the water temperature in the normal temperature water tank constant.

[0005] Further, the MCU control unit is configured to: start the circulation pump to work for a period of time at intervals, so as to keep the water temperature in the normal temperature water tank constant.

[0006] Further, it also includes a cold water button for sending an instruction to the MCU control unit. After the user presses the cold water button, the MCU control unit first keeps the cold water solenoid valve closed and simultaneously starts the circulation pump, so that the normal temperature water in the cold water supply waterway is first introduced into the normal temperature water tank through the cold water feedback waterway. Then, after the circulation pump has been started for a period of time, the cold water solenoid valve is opened, so that the cold water in the cold water tank directly flows out through the cold water supply waterway. In this way, the first cup of water received by the user through the cold water outlet is cold water.

[0007] Further, after the user presses the cold water button, the MCU control unit opens the cold water solenoid valve 1 second after the circulation pump is started.

[0008] Further, when the user presses the cold water button again, the MCU control unit stops the circulation pump and simultaneously closes the cold water solenoid valve.

[0009] The water dispenser with a cold water circulation waterway provided by the present utility model, through the design of the cold water circulation waterway, on the one hand, can prevent the normal temperature water tank from having a temperature crossover and keep the water temperature in the water tank constant, and on the other hand, can also ensure that when the user receives cold water, the first cup received is cold water.

[0010] The following will further illustrate the concept, specific structure and technical effects generated by the present utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present utility model. Description of the Drawings

[0011] Figure 1 It is a waterway layout diagram of a preferred embodiment of the present utility model. Detailed Embodiments

[0012] The following introduces multiple preferred embodiments of the present utility model with reference to the accompanying drawings of the specification, making its technical content clearer and easier to understand. The present utility model can be embodied in many different forms of embodiments, and the protection scope of the present utility model is not limited to the embodiments mentioned in the text.

[0013] In the drawings, components with the same structure are denoted by the same numerical reference signs, and components with similar structures or functions everywhere are denoted by similar numerical reference signs. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present utility model does not limit the size and thickness of each component. For the sake of clarity of the illustration, the thickness of some parts in the drawings is appropriately exaggerated.

[0014] As shown in Figure 1, for the water dispenser according to the present utility model, the raw water flows into the normal temperature water tank 2 after being filtered by the filter element. The normal temperature water in the normal temperature water tank 2 can enter the cold water tank 1 for cooling. The cold water obtained after cooling in the cold water tank 1 can flow out through the cold water supply waterway 8 via the cold water solenoid valve 9 to provide cold water to the user.

[0015] On the cold water supply waterway 8 of the water dispenser according to the present utility model, there is also a cold water feedback waterway 7 bypassing to the normal temperature water tank 2, and a circulation pump 3 is arranged on the cold water feedback waterway 7. When the cold water solenoid valve 9 is closed and the circulation pump 3 is started, the cold water in the cold water tank 1 can be introduced into the normal temperature water tank 2 through the cold water feedback waterway 7. A temperature sensor 6 is arranged in the normal temperature water tank 2. The MCU control unit 4 of the water dispenser is configured to receive the water temperature in the normal temperature water tank 2 monitored by the temperature sensor 6, and at the same time, can control the start and stop of the circulation water pump 3 and the opening and closing of the cold water solenoid valve 9. When the MCU control unit 4 monitors that the water temperature in the normal temperature water tank 2 exceeds a preset value such as 25 °C, the circulation pump 3 is started to add the cold water in the cold water tank 1 into the normal temperature water tank 2, so that the water temperature in the normal temperature water tank 2 is reduced to the preset temperature, and then the circulation pump 3 is stopped to keep the water temperature in the normal temperature water tank 2 constant. In addition, the MCU control unit 4 can also start the circulation pump 3 to work for 5 minutes every interval of a period of time such as 2 hours.

[0016] In addition, the user can give an instruction to the MCU control unit 4 through the cold water button 5. When the user presses the cold water button 5, the MCU control unit 4 first keeps the cold water solenoid valve 9 closed and at the same time starts the circulation water pump 3, so that the normal temperature water in the cold water supply waterway 8 is first introduced into the normal temperature water tank 2 through the cold water feedback waterway 7. Then 1 second after the circulation water pump 3 is started, the MCU control unit 4 opens the cold water solenoid valve 9, so that the cold water in the cold water tank 1 directly flows out through the cold water supply waterway 8, so that the first cup of water received by the user through the cold water outlet is cold water. When the user presses the cold water button 5 again, the MCU control unit 4 stops the circulation water pump 3 and at the same time closes the cold water solenoid valve 9.

[0017] The water dispenser with a cold water circulation waterway provided by the present utility model can, on the one hand, prevent the normal temperature water tank from having a temperature crossover and keep the water temperature in the water tank constant, and on the other hand, can also ensure that when the user receives cold water, the first cup received is cold water.

[0018] The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present utility model without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A water dispenser with a cold water circulation waterway, characterized in that, Including: A normal temperature water tank for storing normal temperature water; a cold tank connected to the normal temperature water tank for cooling the normal temperature water; a cold water supply waterway connected to the cold tank for supplying cold water to the user; a cold water feedback waterway connected to the cold water supply waterway and the normal temperature water tank for feeding back the cold water in the cold tank to the normal temperature water tank; a circulation pump connected to the cold water feedback waterway for circulating the cold water in the cold tank to the normal temperature water tank; a temperature sensor arranged in the normal temperature water tank for monitoring the water temperature in the normal temperature water tank; an MCU control unit for receiving the monitoring signal of the temperature sensor and controlling the start and stop of the circulation pump and the opening and closing of a cold water solenoid valve. It also includes a cold water solenoid valve arranged on the cold water supply waterway for controlling the output of cold water.

2. The water dispenser with a cold water circulation waterway according to claim 1, characterized in that, The MCU control unit is used to keep the water temperature in the normal temperature water tank constant.

3. The water dispenser with a cold water circulation waterway according to claim 1, characterized in that, It also includes a cold water button for sending an instruction to the MCU control unit.

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