Cooling adjusting device for expanding temperature range of cold source

Abstract

The utility model discloses a cooling adjusting device for expanding the temperature range of a cold source, which comprises a condenser, a cooling tower and a water-cooling water chilling unit, a water outlet of the condenser forms two branches through a water outlet pipeline, one branch is provided with a switching valve and is connected to a water inlet of the cooling tower, and the other branch is connected to a water outlet of the water chilling unit. The other branch is provided with a switch valve and is connected to a water inlet of the water-cooling water chilling unit; a circulating pipeline is mounted between a water outlet and a water inlet of the cooling tower through a circulating pump, a three-way diverter valve is mounted on the circulating pipeline, and a side water outlet of the three-way diverter valve and a water outlet of the water-cooling water chilling unit are respectively connected to a water inlet of the condenser through a water inlet pipeline; therefore, by connecting the small-power water-cooling water chilling unit in parallel, cooling water is combined with chilled water, the temperature range of a cold source in the condenser is effectively expanded, the room temperature of a high-temperature test room can be reduced to 178 DEG C, the energy-saving cooling range of the high-temperature test room is effectively optimized, humidity control during cooling can be considered, and practicability is good.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature laboratory cooling technology, and in particular to a cooling regulation device that expands the temperature range of a cold source. Background Technology

[0002] In the existing technology, for high-temperature test chambers, when cooling down from high temperature, cooling water from a cooling tower is usually used. After the cooling water is cooled to the limit by heat exchange through the refrigeration unit, a high-power refrigeration unit is then turned on.

[0003] Cooling towers are usually installed outdoors. In the hot summer, they use the temperature of cooling water for heat exchange. The water temperature in the condenser drops to the limit of 27 or 28 degrees Celsius, while the temperature inside the high-temperature test chamber drops to the limit of 32 or 33 degrees Celsius. The cooling effect on the high-temperature test chamber is very limited. It is necessary to frequently start high-power refrigeration units to achieve effective cooling, which is very costly. Utility Model Content

[0004] To address the aforementioned issues, this application provides a reasonably structured cooling regulation device that expands the temperature range of the cold source, thereby effectively expanding the temperature range of the cold source in the condenser. This device can reduce the room temperature of the high-temperature test chamber to seventeen or eighteen degrees Celsius, effectively optimizing the energy-saving cooling range of the high-temperature test chamber, and also taking into account humidity control during cooling. It is highly practical.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A cooling regulation device for expanding the temperature range of a cold source includes a condenser, a cooling tower, and a water-cooled chiller unit. The outlet of the condenser is connected to two branches via an outlet pipe. One branch is equipped with a switching valve and connected to the inlet of the cooling tower, while the other branch is equipped with a switching valve and connected to the inlet of the water-cooled chiller unit. A circulation pipe is installed between the outlet and inlet of the cooling tower via a circulation pump. A three-way diverter valve is installed on the circulation pipe. The side outlet of the three-way diverter valve and the outlet of the water-cooled chiller unit are respectively connected to the inlet of the condenser via inlet pipes.

[0007] As a further improvement to the above technical solution:

[0008] The inlet and outlet of the three-way diverter valve are installed in the circulation pipeline.

[0009] A flow switch and a system maintenance valve are installed on the water outlet pipe located between the branch line and the condenser outlet.

[0010] A bypass is installed on the circulation pipeline between the cooling tower outlet and the three-way diverter valve inlet, leading to the inlet pipeline. A normally closed valve is installed on the bypass.

[0011] A check valve is installed on the inlet pipe located between the bypass and the outlet of the water-cooled chiller unit.

[0012] The condenser is a shell-and-tube condenser, which is a component of the refrigeration system.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This utility model effectively expands the temperature range of the cold source in the condenser by connecting a low-power water-cooled chiller unit in parallel, which combines cooling water and chilled water. It can reduce the room temperature of the high-temperature test chamber to seventeen or eighteen degrees Celsius, effectively optimize the energy-saving cooling range of the high-temperature test chamber, and can also take into account the humidity control during cooling, saving costs and having good practicality.

[0015] This utility model also has the following advantages:

[0016] The required water exchange temperature for the condenser can be achieved by adjusting the opening and closing of switching valves and on / off valves, combined with the flow regulation of the three-way diverter valve. The structure is simple, the operation is convenient, the safety and reliability are guaranteed, and the cooling system of the high-temperature test chamber is effectively optimized.

[0017] In practical use, the cooling water of the cooling tower can be used to exchange heat and cool down the condenser first. After reaching the limit, the cooling water of the water-cooled chiller unit can be used to exchange heat and cool down the condenser, so that the target temperature of the condenser will drop again to meet the cooling requirements of the high temperature test chamber.

[0018] In practical applications, when it is necessary to consider humidity while cooling, the ratio of cooling water to chilled water can be adjusted to control the rate of humidity drop. This allows for energy-saving cooling while reducing humidity drop, achieving the goal of cooling and controlling humidity simultaneously. Attached Figure Description

[0019] Figure 1 This is a connection diagram of the present invention.

[0020] The components include: 1. Condenser; 2. Refrigeration system; 3. Flow switch; 4. System maintenance valve; 5. Switching valve; 6. Cooling tower; 7. Three-way diverter valve; 8. Circulating pump; 9. Switch valve; 10. Check valve; 11. Water-cooled chiller unit. Detailed Implementation

[0021] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0022] like Figure 1As shown, this embodiment of a cooling regulation device for expanding the temperature range of a cold source includes a condenser 1, a cooling tower 6, and a water-cooled chiller unit 11. The outlet of the condenser 1 is connected to two branches via an outlet pipe. A switching valve 5 is installed on one branch and connected to the inlet of the cooling tower 6. A switching valve 9 is installed on the other branch and connected to the inlet of the water-cooled chiller unit 11. A circulation pipe is installed between the outlet and inlet of the cooling tower 6 via a circulation pump 8. A three-way diverter valve 7 is installed on the circulation pipe. The side outlet of the three-way diverter valve 7 and the outlet of the water-cooled chiller unit 11 are respectively connected to the inlet of the condenser 1 via an inlet pipe.

[0023] In this embodiment, by connecting a low-power water-cooled chiller unit 11 in parallel, the cooling water combined with chilled water effectively expands the temperature range of the cold source in the condenser 1, which can reduce the room temperature of the high-temperature test chamber to seventeen or eighteen degrees, effectively optimizing the energy-saving cooling range of the high-temperature test chamber.

[0024] In this embodiment, the required heat exchange water temperature for the condenser 1 can be achieved by adjusting the opening and closing of the switching valve 5 and the on / off valve 9, combined with the flow regulation of the three-way diverter valve 7. The structure is simple, the operation is convenient, and the system is safe and reliable, effectively optimizing the cooling system of the high-temperature test chamber.

[0025] The inlet and outlet of the three-way diverter valve 7 are installed in the circulation pipeline.

[0026] A flow switch 3 and a system maintenance valve 4 are installed on the water outlet pipe located between the branch line and the outlet of condenser 1.

[0027] In this embodiment, the flow switch 3 mainly monitors the water flow rate in the outlet pipe; the opening and closing of the system maintenance valve 4 enables the switching of the outlet pipe of the condenser 1.

[0028] A bypass is installed in the circulation pipeline between the outlet of cooling tower 6 and the inlet of three-way diverter valve 7, and a normally closed valve is installed on the bypass. The bypass is usually in the open state, so that the water flowing out of the outlet of cooling tower 6 needs to flow through three-way diverter valve 7.

[0029] A one-way valve 10 is installed on the inlet pipe between the bypass and the outlet of the water-cooled chiller unit 11 to control the one-way backflow of the chilled water flowing out of the water-cooled chiller unit 11.

[0030] Condenser 1 is a shell-and-tube condenser and serves as a component of refrigeration system 2.

[0031] In this embodiment, the water-cooled chiller unit 11 is a low-power device, and its outlet discharges chilled water with a temperature as low as 4°C.

[0032] In this embodiment, the switching valve 5, the on / off valve 9, and the three-way diverter valve 7 are all electrically driven.

[0033] By controlling the switching time and sequence of action of the switching valve 5, the on / off valve 9, and the three-way diverter valve 7, a complete switch between cooling water and chilled water can be achieved.

[0034] The method of using this utility model is as follows:

[0035] Cooling tower 6 and water-cooled chiller unit 11 are filled with water. Switching valve 5 is kept in the normally open state, switching valve 9 is kept in the open state, and three-way diverter valve 7 is kept in the normally open state in the angle direction. At this time, water in condenser 1 flows into cooling tower 6 through switching valve 5, and water from the outlet of cooling tower 6 flows back to the inlet of condenser 1 through the angle direction of three-way diverter valve 7. Thus, cooling tower 6 cools condenser 1. This state is the cooling water cooling mode.

[0036] Switching valve 5 remains open, three-way diverter valve 7 remains open in the straight direction (angle valve closed), and switching valve 9 remains open. At this time, water in condenser 1 flows into water-cooled chiller unit 11 through switching valve 9, and water flowing out of water-cooled chiller unit 11 flows back into condenser 1. Meanwhile, water from the outlet of cooling tower 6 flows back to the inlet of cooling tower 6 through three-way diverter valve 7 in the straight direction. This state is the chilled water cooling mode.

[0037] In practical use, the cooling water of the cooling tower 6 can first exchange heat with the condenser 1 to cool it down. After reaching the limit, the cooling water of the water-cooled chiller unit 11 can be switched to exchange heat with the condenser 1 to cool it down, so as to reduce the target temperature of the condenser 1 again to meet the cooling requirements of the high temperature test chamber.

[0038] In practical use, when it is necessary to consider humidity while cooling, the rate of decrease can be controlled by adjusting the ratio of cooling water to chilled water. That is, both switching valve 5 and on / off valve 9 are normally open, and the ratio of the angle and straight flow of the three-way diverter valve 7 is adjusted to reduce the decrease in humidity while saving energy and cooling, thus achieving the purpose of cooling and controlling humidity.

[0039] In this embodiment, the cooling water and chilled water are adjusted in proportion. What is actually being adjusted is the amount of cooling water and chilled water. The final measurement is the water temperature after the cooling water and chilled water are mixed. The mixed water temperature must maintain a uniform temperature drop while keeping the humidity drop rate extremely small.

[0040] The cooling and regulating device for expanding the temperature range of a cold source provided by this utility model has a simple structure, is easy to use, and is reliable in operation. In the hot summer, when the outdoor ambient temperature (cooling towers are generally installed outdoors) is very high (38 or 39 degrees Celsius), using the water temperature of the cooling tower for heat exchange will only lower the water temperature to 27 or 28 degrees Celsius, at which point the high-temperature test chamber will only reach its limit of 32 or 33 degrees Celsius. At this point, switching to chilled water (which can be pre-heated to 4 degrees Celsius) for heat exchange and cooling can lower the temperature of the high-temperature test chamber to 17 or 18 degrees Celsius. This optimizes the laboratory by eliminating the need to start a high-power refrigeration unit, allowing a low-power water-cooled chiller unit to meet the cooling requirements.

[0041] This invention effectively expands the temperature range of the cold source in the condenser, enabling the room temperature of the high-temperature test chamber to drop to seventeen or eighteen degrees Celsius. It effectively optimizes the energy-saving cooling range of the high-temperature test chamber and can also take into account the humidity control during cooling, making it highly practical.

[0042] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0043] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A cooling conditioning device for extending the temperature range of a cold source, comprising a condenser (1), characterized in that: It also includes a cooling tower (6) and a water-cooled chiller unit (11). The outlet of the condenser (1) is connected to two branches via an outlet pipe. A switching valve (5) is installed on one branch and connected to the inlet of the cooling tower (6). A switch valve (9) is installed on the other branch and connected to the inlet of the water-cooled chiller unit (11). A circulation pipe is installed between the outlet and the inlet of the cooling tower (6) via a circulation pump (8). A three-way diverter valve (7) is installed on the circulation pipe. The side outlet of the three-way diverter valve (7) and the outlet of the water-cooled chiller unit (11) are connected to the inlet of the condenser (1) via an inlet pipe.

2. A cooling conditioning device for extending the temperature range of a cold source as claimed in claim 1, characterized in that: The inlet and outlet of the three-way diverter valve (7) are installed in the circulation pipeline.

3. The temperature regulation device of claim 1, wherein: A flow switch (3) and a system maintenance valve (4) are installed on the water outlet pipe located between the branch and the outlet of the condenser (1).

4. The temperature regulation device of claim 1, wherein: A bypass is installed on the circulation pipeline between the outlet of the cooling tower (6) and the inlet of the three-way diverter valve (7) towards the water inlet pipeline, and a normally closed valve is installed on the bypass.

5. A temperature regulation device for extending the temperature range of a cold source as claimed in claim 4, characterized in that: A check valve (10) is installed on the inlet pipe between the bypass and the outlet of the water-cooled chiller unit (11).

6. The temperature regulation device of claim 1, wherein: The condenser (1) is a shell-and-tube condenser, and the condenser (1) is a component of the refrigeration system (2).

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