Energy-saving constant-temperature cold water supply system

Abstract

The invention relates to the technical field of vacuum coating, and discloses an energy-saving constant-temperature cold water supply system which comprises a machine shell, a water pump and a fan, an inner housing is arranged in the machine shell, a water storage tank is arranged in the inner housing, a closed shell is arranged on the upper surface of the water storage tank, and a main ring pipe is arranged on the upper surface of the closed shell; a sealing plate used for sealing the area between the upper surface of the main annular pipe and the upper opening end of the inner housing is arranged between the upper surface of the main annular pipe and the upper opening end of the inner housing, the side face of the inner housing is open and provided with a heat exchanger, a plurality of heat dissipation units are arranged in the main annular pipe in an array mode, and the bottoms of the heat dissipation units penetrate through the water storage tank and are communicated through water outlet pipes. The tail end of the water outlet pipe is connected with the input end of the heat exchanger, the output end of the heat exchanger is provided with a backflow pipe, the tops of the heat dissipation units are communicated through the water inlet pipe, the liquid inlet end of the water pump is provided with a second pipeline, the tail end of the second pipeline is connected with the water storage pool, the liquid outlet end of the water pump is provided with a first pipeline, and the tail end of the first pipeline is connected with the main ring pipe.

Description

Technical Field

[0001] This invention relates to the field of vacuum coating technology, specifically to the field of cooling systems for vacuum coating machines, and particularly to an energy-saving constant-temperature cold water supply system. Background Technology

[0002] In vacuum coating equipment, target cooling is crucial. Currently, the common method is to use forced circulating water cooling, which provides the target with a heat dissipation and cooling medium through an external water circulation cooling system to achieve the purpose of water cooling.

[0003] In existing water-cooling technologies, cooling water is typically circulated using pumps. The cool water carries away heat from the target material, forming hot water. Then, a heat exchanger and fan dissipate the heat, creating cool water. This cycle repeats to achieve cooling. However, this method has some drawbacks. Specifically, during vacuum coating, the target material generates high heat due to ion bombardment. Initially, the cool water is at a low temperature, effectively dissipating heat. However, as usage time increases, the heat from the hot water cannot be dissipated efficiently and promptly, resulting in a higher temperature of the water flowing to the target material compared to the initial temperature, meaning the heat dissipation effect gradually deteriorates.

[0004] Based on the above problems, this invention proposes an energy-saving constant temperature cold water supply system. Summary of the Invention

[0005] To address the problems mentioned in the background above, the present invention provides an energy-saving constant temperature chilled water supply system.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows.

[0007] An energy-saving constant temperature chilled water supply system includes a housing, a water pump and a fan. The upper surface of the housing is provided with mounting holes and the fan is installed in the mounting holes. When the fan is started, it draws air from the bottom to the top of the housing. The side of the housing is provided with a side air inlet. An inner cover is provided inside the casing, a water storage tank is provided inside the inner cover, a closed shell is provided on the upper surface of the water storage tank, a main ring pipe is provided on the upper surface of the closed shell, and a sealing plate is provided between the upper surface of the main ring pipe and the upper opening end of the inner cover to seal the area between the two. The inner casing is open on the side and equipped with a heat exchanger. Several heat dissipation units are arrayed inside the main ring pipe. The bottom of each heat dissipation unit passes through the water storage tank and is connected through an outlet pipe. The end of the outlet pipe is connected to the input end of the heat exchanger. A return pipe is provided at the output end of the heat exchanger. The tops of the heat dissipation units are connected through an inlet pipe. The pump has a second pipe at its inlet end, which is connected to a water storage tank at its end. The pump also has a first pipe at its outlet end, which is connected to the main loop pipe at its end.

[0008] As a further improvement and optimization of the present invention, the heat dissipation unit includes a heat dissipation tower, which is a frustum-shaped structure with an outer diameter that increases vertically from bottom to top. A lower pipe is provided at the lower opening of the heat dissipation tower, and the lower end of the lower pipe passes through the closed shell and the water storage tank and is connected to the water outlet pipe. An outer tower cover is provided at the top opening of the heat dissipation tower, and an inner tower cover is provided inside the outer tower cover through an inner support. Both the outer tower cover and the inner tower cover are conical in shape with an outer diameter that increases vertically from bottom to top. The lower end of the inner tower cover is close to the inner wall of the heat dissipation tower, and the area between the two is named the first gap. The upper end of the outer tower cover is provided with an upper hole, and an upper pipe is provided at the opening of the upper hole. The upper end of the upper pipe is connected to the water inlet pipe.

[0009] As a further improvement and optimization of the present invention, an annular joint is coaxially surrounding the heat dissipation tower. Multiple side connectors are provided on the outer circular surface of the annular joint. The side connectors between two adjacent heat dissipation units are connected to each other, and the side connector of the outermost heat dissipation unit is connected to the main annular pipe.

[0010] As a further improvement and optimization of the present invention, several heat dissipation units are arranged in a longitudinal and transverse array, therefore, each heat dissipation unit has four side connectors.

[0011] As a further improvement and optimization of the present invention, a tapered tube is coaxially arranged on the outside of the outer tower cover and the heat dissipation tower. The outer diameter of the tapered tube is vertical and increases from bottom to top. The lower opening of the tapered tube is close to the outer wall of the outer tower cover or the heat dissipation tower, and the area between the tapered tube and the outer wall of the outer tower cover or the heat dissipation tower is named the second gap. Multiple tapered tubes are arranged in an array along the axis of the heat dissipation tower.

[0012] As a further improvement and optimization of the present invention, the upper surface of the annular joint is provided with a main connecting pipe, and the main connecting pipe and the tapered pipe are connected through a connecting branch pipe.

[0013] As a further improvement and optimization of the present invention, multiple connecting pipes are arranged in an array along the circumferential direction of the heat dissipation tower.

[0014] As a further improvement and optimization of the present invention, the upper surface of the cone tube of the heat dissipation tower is coaxially provided with a step. The step is in the shape of a frustum with an outer diameter decreasing from bottom to top along the vertical direction. A notch is provided at the bottom edge of the outer circular surface of the step, and multiple notches are arranged in an array along the circumference of the step.

[0015] As a further improvement and optimization of the present invention, the gaps on two adjacent steps are arranged in an alternating manner.

[0016] As a further improvement and optimization of the present invention, the side of the enclosed shell is provided with a side vent, and the area above the enclosed shell and the water storage tank are connected by a fixed pipe. The upper surface of the closed shell is provided with a fixing hole, and the lower surface of the annular joint extends with a ring body. The ring body is coaxially connected with the fixing hole and the lower end of the ring body extends into the closed shell. The lower surface of the sealed shell is also provided with a connection hole, which is located below the annulus.

[0017] Compared with the prior art, the beneficial effects of this invention are as follows: I. In this case, the hot water in the cooling system of the traction vacuum coating machine flows as a water film on the inner wall of the heat dissipation tower, and the liquid medium also flows as a water film on the outer wall of the heat dissipation tower. The heat dissipation tower is made of thermally conductive material. Therefore, the heat exchange between the liquid medium and the hot water achieves heat dissipation and cooling. Its technical advantages are: Technical benefits 1. The water film of hot water and the water film of liquid medium are separated only by the heat dissipation tower and both are in the state of water film. Therefore, the heat exchange efficiency between the two is high and the heat dissipation and cooling effect is better. Technical effect 2: Multiple conical tubes are set up to divide the heat dissipation tower into several sections. With the cooperation of the conical tubes and the steps, there is a liquid medium water film on the outer wall of each section of the heat dissipation tower. The more conical tubes are set up, the more sections the heat dissipation tower is divided into. It is as if each section of the heat dissipation tower is wrapped with a liquid medium water film. The hot water flowing on the inner wall of the heat dissipation tower is subjected to heat exchange with a new liquid medium water film every moment, which further improves the heat exchange effect and thus greatly enhances the heat dissipation and cooling effect of hot water. After being cooled by heat exchange, the hot water is converted into cold ice and finally returned to the cooling system of the vacuum coating machine.

[0018] Second, in this case, the liquid medium water film after heat exchange eventually flows downward under the guidance of the steps. Due to the setting of the gap, the liquid medium water film flows downward in the shape of a beaded curtain and eventually returns to the water storage tank. At the same time, the fan starts, and outside cold air passes through the side air inlet, heat exchanger, side air vents, annular body, the internal area of ​​the annular joint, and the liquid medium flowing downwards in a beaded curtain pattern before entering the casing. It is then drawn away by the fan, thus achieving heat dissipation for the liquid medium flowing downwards in a beaded curtain pattern. Its technical advantages are: Technical effect 3: The liquid medium is guided into a beaded curtain shape, and cold air passes through the gaps between the beaded liquid medium, which can greatly increase the contact area between the two and improve the heat dissipation effect of the liquid medium. Technical effect 4: The gaps on two adjacent steps are arranged in an alternating manner, and the gaps in the beaded liquid medium formed by the gaps on two adjacent steps are also arranged in an alternating manner. Therefore, when cold air passes through the beaded liquid medium, it needs to be deflected. The deflection can play a role in stirring the cold air, making the heat dissipation effect better. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a partial schematic diagram of the present invention; Figure 4 This is a partial cross-sectional view of the present invention; Figure 5 This is a schematic diagram of the radiator, return pipe, outlet pipe, and heat dissipation unit; Figure 6 This is a cross-sectional view of the heat dissipation unit; Figure 7 This is a partial sectional view of the heat dissipation tower; Figure 8 This is a schematic diagram of a heat dissipation tower.

[0020] The labels in the attached diagram are: 100. Casing; 101. Water pump; 102. Fan; 103. Inner casing; 104. Heat exchanger; 105. Sealing plate; 106. Water storage tank; 107. Enclosed shell; 1071. Side air vent; 1072. Fixed pipe; 1073. Connection hole; 108. Main ring pipe; 109. Inlet pipe; 110. Outlet pipe; 111. Return pipe; 112. Pipe 1; 113. Pipe 2; 200. Heat dissipation unit; 201. Heat dissipation tower; 202. Lower pipe; 203. Outer tower cover; 204. Inner tower cover; 205. Upper pipe; 206. Annular joint; 207. Side connector; 208. Main connecting pipe; 209. Branch connecting pipe; 210. Conical pipe; 211. Step. Detailed Implementation

[0021] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0022] Reference Figures 1-8 An energy-saving constant temperature chilled water supply system includes a housing 100, a water pump 101, and a fan 102. The upper surface of the housing 100 is provided with a mounting hole and the fan 102 is installed in the mounting hole. When the fan 102 is started, it draws air from the bottom to the top inside the housing 100. A side air inlet is provided on the side of the housing 100 to allow outside air to flow into the housing 100.

[0023] An inner cover 103 is provided inside the housing 100, and a water storage tank 106 is provided inside the inner cover 103. A closed shell 107 is provided on the upper surface of the water storage tank 106, and a main ring pipe 108 is provided on the upper surface of the closed shell 107. A sealing plate 105 for sealing the area between the upper surface of the main ring pipe 108 and the upper opening end of the inner cover 103 is provided.

[0024] The inner casing 103 has an open side and is equipped with a heat exchanger 104. Several heat dissipation units 200 are arranged in an array inside the main ring pipe 108.

[0025] The bottoms of several heat dissipation units 200 all pass through the water storage tank 106 and are connected through the water outlet pipe 110. The end of the water outlet pipe 110 is connected to the input end of the heat exchanger 104, and the output end of the heat exchanger 104 is provided with a return pipe 111.

[0026] The tops of several heat dissipation units 200 are connected by water inlet pipes 109.

[0027] The inlet end of the water pump 101 is provided with a second pipe 113, the end of which is connected to the water storage tank 106. The outlet end of the water pump 101 is provided with a first pipe 112, the end of which is connected to the main ring pipe 108.

[0028] In use, the hot water from the vacuum coating machine is drawn into the heat dissipation unit 200 through the inlet pipe 109 by the existing pump technology, and finally returns through the outlet pipe 110, heat exchanger 104 and return pipe 111. During this process, the liquid medium (e.g., water) stored in the water tank 106 for cooling the hot water is drawn into the heat dissipation unit 200 through the second pipe 113, the first pipe 112 and the main ring pipe 108 by the water pump 101. Heat exchange occurs between the liquid medium and the hot water, thereby cooling the hot water and obtaining cold water. That is, the cold water returns to the vacuum coating machine through the return pipe 111. At the same time, the fan 102 is started, forming an airflow from bottom to top in the casing 100 to dissipate heat from the liquid medium after it has absorbed heat. The cooled liquid medium finally returns to the water tank 106, while the hot air that has absorbed heat is discharged. This cycle repeats to provide cold water for the vacuum coating machine.

[0029] Reference Figures 6-8 The heat dissipation unit 200 includes a heat dissipation tower 201, which is a frustum-shaped structure with an outer diameter that increases vertically from bottom to top.

[0030] A lower pipe 202 is provided at the lower opening of the heat dissipation tower 201. The lower end of the lower pipe 202 passes through the closed shell 107 and the water storage tank 106 and then connects to the water outlet pipe 110.

[0031] An outer tower cover 203 is provided at the upper opening of the heat dissipation tower 201. An inner tower cover 204 is provided inside the outer tower cover 203 through an inner support. Both the outer tower cover 203 and the inner tower cover 204 are conical in shape with an outer diameter that increases vertically from bottom to top. The lower end of the inner tower cover 204 is close to the inner wall of the heat dissipation tower 201, and the area between the two is named the first gap.

[0032] The upper end of the outer tower cover 203 is provided with an upper hole, and an upper pipe 205 is provided at the opening of the upper hole. The upper end of the upper pipe 205 is connected to the water inlet pipe 109.

[0033] Therefore, hot water flows into the area between the outer tower cover 203 and the inner tower cover 204 through the inlet pipe 109 and the upper pipe 205, and flows into the heat dissipation tower 201 through the first gap. It flows in the form of a water film on the inner wall of the heat dissipation tower 201, and finally flows into the outlet pipe 110 through the lower pipe 202.

[0034] The heat dissipation unit 200 also includes an annular connector 206 coaxially surrounding the heat dissipation tower 201. The outer circular surface of the annular connector 206 is provided with multiple side connectors 207. The side connectors 207 between two adjacent heat dissipation units 200 are connected to each other. The side connectors 207 of the outermost heat dissipation unit 200 are connected to the main ring pipe 108. Furthermore, in this case, several heat dissipation units 200 are arranged in a longitudinal and transverse array. Therefore, each heat dissipation unit 200 is provided with four side connectors 207. Of course, other array methods can also be used, in which case the number of side connectors 207 needs to be adjusted accordingly.

[0035] A tapered tube 210 is coaxially arranged on the outside of the outer tower cover 203 and the heat dissipation tower 201. The outer diameter of the tapered tube 210 is vertical and increases from bottom to top. The lower opening of the tapered tube 210 is close to the outer wall of the outer tower cover 203 or the heat dissipation tower 201, and the area between the tapered tube 210 and the outer wall of the outer tower cover 203 or the heat dissipation tower 201 is named the second gap.

[0036] Multiple tapered tubes 210 on the heat dissipation tower 201 are arranged in an array along the axis of the heat dissipation tower 201.

[0037] The upper surface of the annular joint 206 is provided with a main connecting pipe 208, which is connected to the tapered pipe 210 through connecting branch pipes 209. Multiple connecting branch pipes 209 are provided.

[0038] Furthermore, the upper surface of the tapered tube 210 of the heat dissipation tower 201 is coaxially provided with a step 211. The step 211 is in the shape of a frustum with an outer diameter decreasing from bottom to top along the vertical direction. A notch is provided at the bottom edge of the outer circular surface of the step 211, and multiple notches are arranged in an array along the circumference of the step 211.

[0039] Reference Figure 4 and Figure 6The side of the enclosed shell 107 is provided with a side ventilation hole 1071, and the area above the enclosed shell 107 and the water storage tank 106 are connected by a fixed pipe 1072.

[0040] The upper surface of the closed shell 107 is provided with a fixing hole, and the lower surface of the annular joint 206 extends a ring body. The ring body is coaxially connected with the fixing hole and the lower end of the ring body extends into the closed shell 107.

[0041] The lower surface of the closed shell 107 is also provided with a connection hole 1073, which is located below the annulus.

[0042] Working principle of the invention: Hot water from the cooling system of the vacuum coating machine flows into the area between the outer tower cover 203 and the inner tower cover 204 through the inlet pipe 109 and the upper pipe 205, and then flows into the heat dissipation tower 201 through the first gap. It flows as a water film on the inner wall of the heat dissipation tower 201, and finally returns to the cooling system of the vacuum coating machine through the lower pipe 202, the outlet pipe 110, the heat exchanger 104, and the return pipe 111. During this process, the hot water undergoes heat dissipation and cooling treatment, as detailed below: Under the traction of water pump 101, the liquid medium in the water storage tank 106 flows into the cone pipe 210 through pipe 213, pipe 112, main ring pipe 108, side connector 207, ring joint 206, connecting main pipe 208, and connecting branch pipe 209, and flows out through the second gap. Because the second gap is relatively narrow, the liquid medium ultimately flows on the outer wall of the heat dissipation tower 201 in the form of a water film. The heat dissipation tower 201 is made of heat-conducting material. Therefore, the heat dissipation and cooling of the hot water is achieved through heat exchange between the liquid medium and the hot water. Its technical advantage is that, on the one hand, the water film of the hot water and the water film of the liquid medium are separated only by the heat dissipation tower 201 and both are in the form of a water film. Because of the water film state, the heat exchange efficiency between the two is high, and the heat dissipation and cooling effect is better. On the other hand, multiple cone tubes 210 are set to divide the heat dissipation tower 201 into several sections. With the cooperation of cone tubes 210 and steps 211, there is a liquid medium water film on the outer wall of each section of the heat dissipation tower 201. The more cone tubes 210 are set, the more sections the heat dissipation tower 201 is divided into. It is as if each section of the outer wall of the heat dissipation tower 201 is wrapped with a liquid medium water film. The hot water flowing on the inner wall of the heat dissipation tower 201 is subjected to heat exchange with a new liquid medium water film every moment, further improving the heat exchange effect and thus greatly improving the heat dissipation and cooling effect of the hot water. The liquid medium water film eventually flows downward under the guidance of step 211. Due to the setting of the gap, the liquid medium water film flows downward in the shape of a beaded curtain, and finally returns to the water storage tank 106 through path one formed by fixed pipe 1072 or path two formed by the internal area of ​​the annular joint 206 and the connecting hole 1073. Simultaneously, the fan 102 starts, and outside cold air passes through the side air inlet, heat exchanger 104, side air vent 1071, annular body, the internal area of ​​annular joint 206, and the liquid medium flowing downward in a beaded curtain pattern before entering the casing 100. It is then drawn away by the fan 100, thus achieving heat dissipation for the liquid medium flowing downward in a beaded curtain pattern. Its technical advantages are: firstly, guiding the liquid medium into a beaded curtain pattern and allowing cold air to pass through the gaps between the beaded curtain-like liquid medium greatly increases the contact area between them, improving the heat dissipation effect on the liquid medium; secondly, preferably, the notches on adjacent steps 211 are staggered. This is beneficial because the gaps in the beaded curtain-like liquid medium formed by the notches on adjacent steps 211 are also staggered. Therefore, when the cold air passes through the beaded curtain-like liquid medium, it needs to be deflected, which creates a stirring effect, resulting in better heat dissipation.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An energy-saving constant-temperature chilled water supply system, comprising a casing (100), a water pump (101), and a fan (102), characterized in that, The upper surface of the housing (100) is provided with mounting holes and the fan (102) is installed in the mounting holes. When the fan (102) is started, it draws the air in the housing (100) from bottom to top. The side of the housing (100) is provided with a side air inlet. An inner cover (103) is provided inside the housing (100), a water storage tank (106) is provided inside the inner cover (103), a closed shell (107) is provided on the upper surface of the water storage tank (106), a main ring pipe (108) is provided on the upper surface of the closed shell (107), and a sealing plate (105) for sealing the area between the upper surface of the main ring pipe (108) and the upper opening end of the inner cover (103) is provided. The inner casing (103) is open on the side and is equipped with a heat exchanger (104). Several heat dissipation units (200) are arranged in an array inside the main ring pipe (108). The bottom of several heat dissipation units (200) passes through the water storage tank (106) and is connected through the water outlet pipe (110). The end of the water outlet pipe (110) is connected to the input end of the heat exchanger (104). The output end of the heat exchanger (104) is equipped with a return pipe (111). The tops of several heat dissipation units (200) are connected through the water inlet pipe (109). The inlet end of the water pump (101) is provided with a second pipe (113), the end of the second pipe (113) is connected to the water storage tank (106), and the outlet end of the water pump (101) is provided with a first pipe (112), the end of the first pipe (112) is connected to the main ring pipe (108).

2. The energy-saving constant temperature cold water supply system according to claim 1, characterized in that, The heat dissipation unit (200) includes a heat dissipation tower (201), which is a frustum-shaped structure with an outer diameter that increases vertically from bottom to top. A lower pipe (202) is provided at the lower opening of the heat dissipation tower (201). The lower end of the lower pipe (202) passes through the closed shell (107) and the water storage tank (106) and is connected to the water outlet pipe (110). An outer tower cover (203) is provided at the upper opening of the heat dissipation tower (201), and an inner tower cover (204) is provided inside the outer tower cover (203) through an inner support. Both the outer tower cover (203) and the inner tower cover (204) are conical in shape with an outer diameter that increases vertically from bottom to top. The lower end of the inner tower cover (204) is close to the inner wall of the heat dissipation tower (201), and the area between the two is named the first gap. The upper end of the outer tower cover (203) is provided with an upper hole, and an upper pipe (205) is provided at the opening of the upper hole. The upper end of the upper pipe (205) is connected to the water inlet pipe (109).

3. The energy-saving constant temperature cold water supply system according to claim 2, characterized in that, The heat dissipation tower (201) is surrounded by an annular joint (206) on the outer periphery. The outer circular surface of the annular joint (206) is provided with multiple side connectors (207). The side connectors (207) between two adjacent heat dissipation units (200) are connected to each other. The side connector (207) of the outermost heat dissipation unit (200) is connected to the main ring pipe (108).

4. The energy-saving constant temperature cold water supply system according to claim 3, characterized in that, Several heat dissipation units (200) are arranged in a longitudinal and transverse array, so each heat dissipation unit (200) has four side connectors (207).

5. The energy-saving constant temperature cold water supply system according to claim 3, characterized in that, A tapered tube (210) is coaxially arranged on the outside of the outer tower cover (203) and the heat dissipation tower (201). The outer diameter of the tapered tube (210) increases vertically from bottom to top. The lower opening of the tapered tube (210) is close to the outer wall of the outer tower cover (203) or the heat dissipation tower (201), and the area between the tapered tube (210) and the outer wall of the outer tower cover (203) or the heat dissipation tower (201) is named the second gap. Multiple tapered tubes (210) on the heat dissipation tower (201) are arranged in an array along the axis of the heat dissipation tower (201).

6. The energy-saving constant temperature cold water supply system according to claim 5, characterized in that, The upper surface of the annular joint (206) is provided with a connecting main pipe (208), and the connecting main pipe (208) and the tapered pipe (210) are connected by a connecting branch pipe (209).

7. The energy-saving constant temperature cold water supply system according to claim 6, characterized in that, Multiple connecting pipes (208) are arranged in an array along the circumferential direction of the heat dissipation tower (201).

8. The energy-saving constant temperature cold water supply system according to claim 6, characterized in that, The upper surface of the tapered tube (210) of the heat dissipation tower (201) is coaxially provided with a step (211). The step (211) is a frustum shape with an outer diameter decreasing from bottom to top along the vertical direction. A notch is provided at the bottom edge of the outer circular surface of the step (211). Multiple notches are arranged in an array along the circumference of the step (211).

9. The energy-saving constant temperature cold water supply system according to claim 8, characterized in that, The gaps on two adjacent steps (211) are arranged in an alternating pattern.

10. An energy-saving constant-temperature cold water supply system according to claim 8 or 9, characterized in that, The side of the enclosed shell (107) is provided with a side air vent (1071), and the area above the enclosed shell (107) and the water storage tank (106) are connected by a fixed pipe (1072); The upper surface of the closed shell (107) is provided with a fixing hole, and the lower surface of the annular joint (206) extends with a ring body. The ring body is coaxially connected with the fixing hole and the lower end of the ring body extends into the closed shell (107). The lower surface of the closed shell (107) is also provided with a connection hole (1073), which is located below the annulus.

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