Cold water preparation device and water cooler

Abstract

The utility model discloses a cold water preparation device and a water chiller. The cold water preparation device comprises a refrigeration assembly, a first heat exchange pipe and a second heat exchange pipe, the refrigeration assembly is provided with a refrigerant inlet and a refrigerant outlet, and the refrigeration assembly is used for cooling a refrigerant; the first heat exchange pipe is connected between the refrigerant inlet and the refrigerant outlet, the first heat exchange pipe is a passage for refrigerant to flow, and the first heat exchange pipe is provided with a first heat exchange section; the second heat exchange pipe is a channel for water to be refrigerated to flow and is provided with a second heat exchange section, and the second heat exchange section is in contact with the first heat exchange section for heat exchange, so that the first heat exchange pipe and the second heat exchange pipe are mutually independent, a secondary refrigerant and a refrigerant are mixed, and drinking water safety is guaranteed; and meanwhile, the refrigerant subjected to heat exchange is cooled again and enters the first heat exchange pipe again after being cooled, so that the refrigerant forms a cycle, the low-temperature refrigerant is continuously used for supplementing and cooling, and the temperature of cold water is stable.

Description

Technical Field

[0001] This utility model relates to the field of cold water preparation, and in particular to a cold water preparation device and a chiller. Background Technology

[0002] Existing drinking water equipment obtains cold water through semiconductor refrigeration, but this method has low refrigeration efficiency, which leads to unstable cold water outlet temperature when the demand for cold water is high, making it impossible to supply a large amount of cold water stably and affecting its use. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, a first aspect of this invention provides a cold water preparation device, including a refrigeration component, a first heat exchange tube, and a second heat exchange tube; the refrigeration component is provided with a refrigerant inlet and a refrigerant outlet, and is used to cool the refrigerant; the first heat exchange tube is connected between the refrigerant inlet and the refrigerant outlet, and the first heat exchange tube is a channel for refrigerant flow, and the first heat exchange tube is provided with a first heat exchange section; the second heat exchange tube is a channel for the flow of water to be cooled, and the second heat exchange tube is provided with a second heat exchange section, and the second heat exchange section contacts the first heat exchange section to exchange heat.

[0004] According to some embodiments of the present invention, the refrigeration assembly includes a compressor and a condenser. The inlet of the compressor is the refrigerant inlet, and the outlet of the compressor is connected to the inlet of the condenser through a pipeline. The outlet of the condenser is the refrigerant inlet.

[0005] According to some embodiments of the present invention, the first heat exchange section is provided with a first contact surface, and the second heat exchange section is provided with a second contact surface. Both the first contact surface and the second contact surface are planar, and the first contact surface and the second contact surface are in contact with each other, thereby increasing the contact area between the first heat exchange section and the second heat exchange section and improving the efficiency of heat exchange.

[0006] According to some embodiments of the present invention, a thermally conductive silicone grease layer is filled between the first contact surface and the second contact surface, thereby improving the heat exchange rate by utilizing the high thermal conductivity of the thermally conductive silicone grease.

[0007] According to some embodiments of this utility model, a heat-conducting aluminum strip is welded between the first contact surface and the second contact surface, thereby improving the heat exchange rate by utilizing the high thermal conductivity of the heat-conducting aluminum strip.

[0008] According to some embodiments of the present invention, the first heat exchange tube and the second heat exchange tube are welded to form a total heat exchange tube, which is spiral in shape, increasing the flow path of the coolant and the water to be cooled, thereby extending the heat exchange time between the coolant and the water to be cooled.

[0009] According to some embodiments of the present invention, the first heat exchange tube and the second heat exchange tube are twisted together in a braid shape to increase the contact area between the first heat exchange tube and the second heat exchange tube.

[0010] According to some embodiments of the present invention, the first heat exchange tube is provided with a first outlet section, the diameter of which is smaller than the diameter of the first heat exchange section; the second heat exchange tube is provided with a second outlet section, the diameter of which is smaller than the diameter of the second heat exchange section, thereby reducing the flow rate of the coolant and the water to be cooled, increasing the heat exchange time between the coolant and the water to be cooled, and thus improving the heat exchange efficiency.

[0011] According to some embodiments of the present invention, the first heat exchange tube and the second heat exchange tube are made of copper tubes.

[0012] The first aspect of this utility model has at least the following beneficial effects:

[0013] 1. The refrigerant is cooled by the refrigeration components. The cooled refrigerant enters the first heat exchange tube, while the water to be cooled passes through the second heat exchange tube. The first heat exchange tube has a first heat exchange section, and the second heat exchange tube has a second heat exchange section. The second heat exchange section is in contact with the first heat exchange section, allowing the water to be cooled to exchange heat with the refrigerant. After the heat exchange is completed, the refrigerant returns to the refrigeration components for further cooling. After cooling, it re-enters the first heat exchange tube, thus forming a refrigerant cycle. This ensures that a continuous supply of low-temperature refrigerant enters the first heat exchange tube, maintaining a stable outlet water temperature.

[0014] 2. The first heat exchange tube and the second heat exchange tube are independent of each other, so that the refrigerant and the cooling agent can be mixed to ensure drinking water safety.

[0015] A second aspect of this invention provides a chiller, including the chilled water preparation device described above.

[0016] The second aspect of the present invention has at least the following beneficial effects:

[0017] Because the refrigerant forms a cycle between the refrigeration components and the first heat exchange tube, low-temperature refrigerant continuously enters the first heat exchange tube and exchanges with the water to be cooled in the second heat exchange tube, thus meeting the demand for cold water production and improving the user experience.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the refrigeration component, the first heat exchange tube, and the second heat exchange tube assembly according to an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram showing the usage status of the first heat exchange tube and the second heat exchange tube according to an embodiment of the present utility model;

[0022] Figure 3 This is a top view of the first heat exchange tube and the second heat exchange tube in use according to an embodiment of the present utility model;

[0023] Figure 4 This is a cross-sectional schematic diagram of the first heat exchange tube and the second heat exchange tube in use according to an embodiment of the present invention. Figure 1 ;

[0024] Figure 5 This is a cross-sectional schematic diagram of the first heat exchange tube and the second heat exchange tube in use according to an embodiment of the present invention. Figure 2 ;

[0025] Figure 6 This is a cross-sectional schematic diagram of the first heat exchange tube and the second heat exchange tube in use according to an embodiment of the present invention. Figure 3 ;

[0026] Figure 7 This is a cross-sectional schematic diagram of the first heat exchange tube and the second heat exchange tube in use according to an embodiment of the present invention. Figure 4 . Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, "more than" means two or more, and "greater than," "less than," "exceeding," etc., are understood to exclude the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0029] Reference Figures 1 to 3 A cold water preparation device includes a refrigeration component 100, a first heat exchange tube 200, and a second heat exchange tube 300. The refrigeration component 100 has a refrigerant inlet 101 and a refrigerant outlet 102, and is used to cool the refrigerant. The first heat exchange tube 200 is connected between the refrigerant inlet 101 and the refrigerant outlet 102, and serves as a channel for refrigerant flow. The first heat exchange tube 200 has a first heat exchange section 210. The second heat exchange tube 300 serves as a channel for the flow of water to be cooled, and has a second heat exchange section 310. The second heat exchange section 310 and the first heat exchange section 210 are in contact with each other for heat exchange, so that the first heat exchange tube 200 and the second heat exchange tube 300 are independent of each other, allowing the refrigerant and the cooling agent to mix and ensuring drinking water safety.

[0030] The first heat exchange tube 200 and the second heat exchange tube 300 mentioned above are made of copper tubes.

[0031] The refrigerant is cooled by the refrigeration component 100, and the cooled refrigerant enters the first heat exchange tube 200. The water to be cooled flows in the second heat exchange tube 300. The second heat exchange section 310 comes into contact with the first heat exchange section 210, so that the water to be cooled and the refrigerant exchange heat. After the heat exchange is completed, the refrigerant returns to the refrigeration component 100 for cooling, and then enters the first heat exchange tube 200 again, so that the refrigerant forms a cycle, so that low-temperature refrigerant continuously enters the first heat exchange tube 200, ensuring the stability of the cold water outlet temperature.

[0032] Reference Figure 1 As shown, the refrigeration assembly 100 includes a compressor 110 and a condenser 120. The inlet of the compressor 110 is a refrigerant inlet 101, and the outlet of the compressor 110 is connected to the inlet of the condenser 120 through a pipeline. The outlet of the condenser 120 is a refrigerant outlet 102.

[0033] During operation, the compressor 110 compresses the gaseous refrigerant into a high-temperature, high-pressure gaseous state and sends it to the condenser 120 for cooling. After cooling, the refrigerant becomes a medium-temperature, high-pressure liquid and enters the first heat exchange tube 200. After absorbing the heat from the water to be cooled in the second heat exchange tube 300, the refrigerant vaporizes into a gaseous state and then returns to the compressor 110 to continue compression and refrigeration.

[0034] An expansion valve can also be installed between the compressor 110 and the condenser 120. The medium-temperature liquid refrigerant flowing out of the condenser is throttled and depressurized by the expansion valve into a low-temperature, low-pressure gas-liquid mixture, and then enters the first heat exchange tube 200 to reduce the pressure on the first heat exchange tube 200.

[0035] When the amount of cold water used increases, in order to ensure the outlet temperature of the water to be cooled, the operating frequency of the compressor 110 is adjusted to increase so that the temperature of the refrigerant output is lower than the preset temperature. This improves the cooling effect by increasing the temperature difference without increasing the amount of refrigerant used.

[0036] When the water consumption of chilled water decreases, the operating frequency of compressor 110 can be reduced, or compressor 110 can be started and stopped intermittently. This ensures the chilled water outlet temperature while reducing the operating time of compressor 110, thereby reducing unnecessary power consumption and improving energy efficiency during use.

[0037] Because the cross-sections of the first heat exchange tube 200 and the second heat exchange tube 300 are circular, the contact area between them is limited when they are connected. As a result, after the first heat exchange tube 200 and the second heat exchange tube 300 are welded, the contact area between them is too small, making it easy for them to detach from each other. This causes the first heat exchange tube 200 and the second heat exchange tube 300 to no longer be in contact, making heat exchange impossible and affecting their use.

[0038] Reference Figure 4 , 5 As shown, in order to increase the contact area between the first heat exchange section 210 and the second heat exchange section 310, the first heat exchange section 210 is provided with a first contact surface 211 and the second heat exchange section 310 is provided with a second contact surface 311. Both the first contact surface 211 and the second contact surface 311 are planar, and the first contact surface 211 and the second contact surface 311 are in contact with each other.

[0039] The first heat exchange section 210 and the second heat exchange section 310 are welded together by the first contact surface 211 and the second contact surface 311. The first contact surface 211 and the second contact surface 311 increase the welding area, thereby ensuring a tight weld between the first heat exchange tube 200 and the second heat exchange tube 300. At the same time, the area for heat exchange between the two is also increased, thereby improving the efficiency of heat exchange.

[0040] To further improve the efficiency of heat exchange, the following implementation method can be adopted:

[0041] Reference Figure 6In one embodiment, a thermally conductive silicone grease layer 400 can be filled between the first heat exchange section 210 and the second heat exchange section 310 to improve the heat exchange rate between the first heat exchange section 210 and the second heat exchange section 310 by utilizing the high thermal conductivity of the thermally conductive silicone grease.

[0042] Reference Figure 7 In the second embodiment, a heat-conducting aluminum strip 500 is welded between the first heat exchange section 210 and the second heat exchange section 310 to improve the heat exchange rate by utilizing the high thermal conductivity of the heat-conducting aluminum strip 500.

[0043] Reference Figure 2 As shown, to further improve the efficiency of heat exchange, the flow path of the coolant and the water to be cooled can be extended to prolong the heat exchange time between the coolant and the water to be cooled, thereby improving the heat exchange efficiency.

[0044] The first heat exchange tube 200 and the second heat exchange tube 300 are welded together to form a total heat exchange tube. The total heat exchange tube is spiral-shaped. While increasing the flow path of the coolant and the water to be cooled, it can further reduce the space occupied by the first heat exchange tube 200 and the second heat exchange tube 300. While increasing the flow path, it does not increase the area occupied, so that the chiller with this device can be miniaturized.

[0045] In the above situation, one first heat exchange tube 200 and one second heat exchange tube 300 are used, and they are twisted together into a braid and then welded to further increase the contact area between the first heat exchange tube 200 and the second heat exchange tube 300.

[0046] Meanwhile, a single first heat exchange tube 200 and two or more second heat exchange tubes 300 are used. The diameter of the first heat exchange tube 200 is larger than the diameter of the second heat exchange tube 300, meaning that the flow rate of the first heat exchange tube 200 is greater than that of the second heat exchange tube 300. The first heat exchange tube 200 is located in the center, and two second heat exchange tubes 300 are wound around the first heat exchange tube 200, forming a three-strand rope-like structure. By increasing the number of second heat exchange tubes 300, the efficiency of heat exchange with the first heat exchange tube 200 is improved, and the outlet speed of cold water can be shortened.

[0047] Alternatively, one second heat exchange tube 300 and two or more first heat exchange tubes 200 can be used, wherein the diameter of the second heat exchange tube 300 is larger than the diameter of the first heat exchange tube 200, that is, the flow rate of the second heat exchange tube 300 is greater than the flow rate of the first heat exchange tube 200. The two first heat exchange tubes 200 are wound around the second heat exchange tube 300 located in the center, so that the first heat exchange tube 200 and the second heat exchange tube 300 are in a three-strand rope shape, which can also shorten the cold water outlet speed.

[0048] Reference Figure 3 As shown, the heat exchange efficiency can be improved by reducing the flow rates of the coolant and the water to be cooled, thereby increasing the time for heat exchange between them.

[0049] The first heat exchange tube 200 is provided with a first outlet section 220, the diameter of which is smaller than the diameter of the first heat exchange section 210. This causes the coolant to flow out of the first heat exchange tube 200, and the flow rate of the coolant to decrease due to the reduced tube diameter, thereby prolonging the time it takes for the coolant to pass through the first heat exchange tube 200.

[0050] In addition, the second heat exchange tube 300 is provided with a second outlet section 320, the diameter of which is smaller than that of the second heat exchange section 310. This causes the flow rate of the water to be cooled to decrease when it flows out of the second heat exchange tube 300 due to the reduced tube diameter. This also prolongs the time it takes for the water to be cooled to pass through the second heat exchange tube 300, thereby extending the heat exchange time between the coolant and the water to be cooled.

[0051] A chiller, including the chilled water preparation device described above.

[0052] The first heat exchange tube 200 and the second heat exchange tube 300 are made independent of each other, allowing the refrigerant and the cooling agent to mix and ensuring drinking water safety. After heat exchange, the refrigerant returns to the refrigeration unit 100 for cooling, and then re-enters the first heat exchange tube 200, thus forming a refrigerant cycle. This ensures that low-temperature refrigerant continuously enters the first heat exchange tube 200, maintaining a stable outlet water temperature.

[0053] In the description of this specification, references to terms such as "some embodiments" or "as one might imagine" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one embodiment or example.

[0054] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A cold water preparation apparatus, characterized in that, include A refrigeration assembly (100) is provided with a refrigerant inlet (101) and a refrigerant outlet (102), and the refrigeration assembly (100) is used to cool the refrigerant; The first heat exchange tube (200) is connected between the refrigerant inlet (101) and the refrigerant outlet (102). The first heat exchange tube (200) is a channel for refrigerant flow and is provided with a first heat exchange section (210). The second heat exchange tube (300) is a channel for the flow of water to be cooled. The second heat exchange tube (300) is provided with a second heat exchange section (310). The second heat exchange section (310) and the first heat exchange section (210) are in contact with each other to exchange heat. The first heat exchange tube (200) and the second heat exchange tube (300) are made of copper tubes; the first heat exchange tube (200) and the second heat exchange tube (300) are welded to form a total heat exchange tube, which is spiral in shape; The first heat exchange section (210) is provided with a first contact surface (211), and the second heat exchange section (310) is provided with a second contact surface (311). Both the first contact surface (211) and the second contact surface (311) are planar, and the first contact surface (211) and the second contact surface (311) are in contact with each other.

2. The cold water preparation apparatus according to claim 1, characterized in that, The refrigeration assembly (100) includes a compressor (110) and a condenser (120). The inlet of the compressor (110) is the refrigerant inlet (101), and the outlet of the compressor (110) is connected to the inlet of the condenser (120) through a pipeline. The outlet of the condenser (120) is the refrigerant outlet (102).

3. The cold water preparation apparatus according to claim 1, characterized in that, A thermally conductive silicone grease layer (400) is filled between the first heat exchange section (210) and the second heat exchange section (310).

4. The cold water preparation apparatus according to claim 1, characterized in that, A heat-conducting aluminum strip (500) is welded between the first heat exchange section (210) and the second heat exchange section (310).

5. The cold water preparation apparatus according to claim 1, characterized in that, The first heat exchange tube (200) and the second heat exchange tube (300) are twisted together in a braided shape.

6. The cold water preparation apparatus according to claim 1, characterized in that, The first heat exchange tube (200) is provided with a first outlet section (220), the diameter of which is smaller than the diameter of the first heat exchange section (210); the second heat exchange tube (300) is provided with a second outlet section (320), the diameter of which is smaller than the diameter of the second heat exchange section (310).

7. A chiller, characterized in that, Includes the cold water preparation apparatus according to any one of claims 1 to 6.

Images