Water mixing device of high-precision cooling-water machine

Abstract

The utility model discloses a water mixing device of a high-precision cooling-water machine, which relates to the technical field of water mixing devices and comprises a water tank, a motor is arranged below the water tank, a magnet fixing frame is arranged on an output shaft of the motor in a transmission manner, and a central shaft is integrally formed at the central position in the water tank; the first magnets are arranged in the two circular grooves in the magnet fixing frame, and the number of the first magnets is two; and the stirring mechanism is arranged on the outer portion of the center shaft in a sleeving mode, two second magnets are arranged in two circular grooves in the stirring mechanism correspondingly, and the problem that in the using process of an existing cooling-water machine, cold and hot mixing is not uniform, and the stability of the water outlet temperature is affected is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of water mixing devices, specifically a water mixing device for a high-precision chiller. Background Technology

[0002] Most common water chillers currently struggle to maintain a temperature stability of ±0.1℃ or higher. Analysis has revealed that because water chillers control water temperature by simultaneously heating and cooling, uneven mixing of hot and cold water occurs, thus affecting the stability of the outlet water temperature.

[0003] Existing technologies often use methods such as increasing water flow to indirectly increase mixing uniformity, or directly manipulate data to deceive consumers. However, stability is still difficult to guarantee when water resistance increases and flow rate decreases.

[0004] Most magnetic stirring devices currently on the market are used in laboratories. They operate using a fixed motor and a moving stir bar. In this way, when the machine stops, the stir bar will detach from the operating area, causing it to fail to work when restarted. This makes it difficult to use in situations where it is inconvenient to install a stir bar. Utility Model Content

[0005] The purpose of this invention is to provide a high-precision water mixing device for a chiller, in order to solve the problem mentioned in the background art of uneven mixing of hot and cold water during the use of existing chillers, which affects the stability of the outlet water temperature.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a water mixing device for a high-precision chiller, including a water tank, a motor installed below the water tank, a magnet fixing bracket installed on the output shaft of the motor, and a central shaft integrally formed at the center of the interior of the water tank;

[0007] Also includes:

[0008] The first magnet is disposed in two circular slots inside the magnet holder, and two first magnets are provided;

[0009] The stirring mechanism is sleeved on the outside of the central shaft, and two second magnets are provided in each of the two circular grooves inside the stirring mechanism.

[0010] Preferably, a cover plate is provided above the two second magnets, the cover plate and the stirring mechanism are integrated into one structure, and the cover plate is connected to the central shaft.

[0011] Preferably, a heating rod is installed inside the water tank, and a coil evaporator is installed above the heating rod. Both the coil evaporator and the heating rod are integrally formed with the water tank.

[0012] Preferably, a bearing is provided at the center of the internal part of the stirring mechanism. The bearing and the stirring mechanism are an integral structure, and the stirring mechanism is rotatably connected to the central shaft through the bearing.

[0013] Preferably, a limiting nut is provided at the upper end of the cover plate, and the limiting nut is threadedly engaged with the top end of the central shaft.

[0014] Preferably, the two second magnets correspond one-to-one with the two first magnets, and the magnet holder is set in a non-contact manner with the water tank.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes magnetic transmission, eliminating the need for dynamic sealing components and completely preventing water leakage. The motor drives the first magnet to rotate, which in turn drives the stirring mechanism. The stirring mechanism is equipped with blades that rotate the water in the tank. Since the tank simultaneously handles heating and cooling, there is a noticeable temperature stratification when the water is stable, resulting in uneven water temperature, large fluctuations in the outlet water temperature, and difficulty in controlling stability. By stirring, the water can be fully mixed, significantly improving the stability of the outlet water temperature. This overcomes the problem of uneven mixing of hot and cold water in existing chillers, which affects the stability of the outlet water temperature. Attached Figure Description

[0017] Figure 1 This is a top view of the mixing water device structure of the high-precision chiller of this utility model;

[0018] Figure 2 This is a bottom view of the mixing device structure of the high-precision chiller of this utility model;

[0019] Figure 3 This is a schematic diagram of the disassembled structure of the mixing water device of the high-precision chiller of this utility model;

[0020] Figure 4 This is a cross-sectional view of the internal structure of the mixing device of the high-precision chiller of this utility model;

[0021] In the diagram: 1. Water tank; 2. Coil evaporator; 3. Heating rod; 4. Stirring mechanism; 5. Motor; 6. Magnet holder; 7. First magnet; 8. Bearing; 9. Central shaft; 10. Second magnet; 11. Cover plate; 12. Limit nut. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 The present invention provides an embodiment of a high-precision chiller mixing water device, including a water tank 1, a motor 5 disposed below the water tank 1, a magnet fixing bracket 6 being driven on the output shaft of the motor 5, and a central shaft 9 being integrally formed at the center of the interior of the water tank 1.

[0024] Also includes:

[0025] The first magnet 7 is disposed in two circular slots inside the magnet holder 6, and there are two first magnets 7;

[0026] The stirring mechanism 4 is sleeved on the outside of the central shaft 9, and two second magnets 10 are provided in each of the two circular grooves inside the stirring mechanism 4.

[0027] In use, the coil evaporator 2 and heating rod 3 are installed inside the water tank 1. Low-temperature refrigerant flows inside the coil evaporator 2 to cool the water in the water tank 1, while the heating rod 3 heats the water. The water temperature is controlled by adjusting the PWM power of the heating rod 3. The motor module includes a motor 5, a first magnet 7, and a magnet mounting bracket 6. The motor 5 drives the first magnet 7 to rotate. The stirring mechanism 4 module includes a second magnet 10, a bearing 8, and a cover plate 11. The stirring mechanism 4 is fixed on the central shaft 9 at the bottom of the water tank 1. There is a sleeve at the top and bottom of the stirring mechanism to fix it and prevent sliding and friction. The top is fixed by a nut. The first magnet 7 and the second magnet 10 are installed with the same polarity. During operation, the motor drives the first magnet 7 to rotate, and the magnetic force drives the stirring mechanism 4 to rotate. The stirring mechanism is designed with blades, which rotate to move the water in the water tank 1. Since there is heating and cooling in the water tank 1 at the same time, there is obvious water temperature stratification when the water is in a stable state, resulting in uneven water temperature, large fluctuations in the outlet water temperature, and difficulty in controlling stability. Stirring can make it fully mixed and greatly improve the stability of the outlet water temperature.

[0028] Please see Figure 4 A cover plate 11 is provided above the two second magnets 10. The cover plate 11 is an integral structure with the stirring mechanism 4. The cover plate 11 is connected to the central shaft 9. The cover plate 11 above the two second magnets 10 serves to seal and separate the second magnets 10. Please refer to [link / reference]. Figure 1 The water tank 1 contains a heating rod 3, and a coil evaporator 2 is located above the heating rod 3. Both the coil evaporator 2 and the heating rod 3 are integral with the water tank 1. The heating rod 3 inside the water tank 1 is used to heat the interior of the water tank 1. Please refer to [link / reference]. Figure 4A bearing 8 is located at the center of the internal structure of the stirring mechanism 4. The bearing 8 is an integral part of the stirring mechanism 4. The stirring mechanism 4 is rotatably connected to the central shaft 9 via the bearing 8. The bearing 8 located at the center of the internal structure of the stirring mechanism 4 assists in the rotatable connection between the stirring mechanism 4 and the central shaft 9. Please refer to [link / reference]. Figure 4 A limiting nut 12 is provided at the upper end of the cover plate 11. The limiting nut 12 is threadedly connected to the top end of the central shaft 9. The limiting nut 12 at the upper end of the cover plate 11 serves to limit the movement of the stirring mechanism 4. Please refer to [link / reference]. Figure 4 The two second magnets 10 correspond one-to-one with the two first magnets 7, and the magnet fixing bracket 6 is set in a non-contact manner with the water tank 1.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mixing device for a high-precision chiller, comprising a water tank (1), a motor (5) disposed below the water tank (1), a magnet fixing bracket (6) being driven on the output shaft of the motor (5), and a central shaft (9) integrally formed at the center of the interior of the water tank (1); characterized in that Also includes: The first magnet (7) is disposed in two circular slots inside the magnet holder (6), and there are two first magnets (7); The stirring mechanism (4) is sleeved on the outside of the central shaft (9), and two second magnets (10) are provided in the two circular grooves inside the stirring mechanism (4).

2. The water mixing device of a high-precision chiller according to claim 1, characterized in that: A cover plate (11) is provided above the two second magnets (10). The cover plate (11) and the stirring mechanism (4) are an integral structure. The cover plate (11) is connected to the central shaft (9).

3. The water mixing device of a high-precision chiller according to claim 1, characterized in that: The water tank (1) is equipped with a heating rod (3) inside, and a coil evaporator (2) is installed above the heating rod (3). The coil evaporator (2) and the heating rod (3) are both integrated with the water tank (1).

4. The water mixing device of a high-precision chiller according to claim 1, characterized in that: A bearing (8) is provided at the center of the stirring mechanism (4). The bearing (8) and the stirring mechanism (4) are an integral structure. The stirring mechanism (4) is rotatably connected to the central shaft (9) through the bearing (8).

5. The high-precision cold water machine mixed water device according to claim 2, characterized in that: The upper end of the cover plate (11) is provided with a limiting nut (12), which is threadedly connected to the top end of the central shaft (9).

6. The water mixing device of a high-precision chiller according to claim 1, characterized in that: The two second magnets (10) correspond one-to-one with the two first magnets (7), and the magnet holder (6) is set in a non-contact manner with the water tank (1).

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