Device for uniformizing temperature of wind field in air-cooled laboratory

Abstract

The utility model discloses a device for uniformizing the temperature of a wind field in an air-cooled laboratory, which relates to the field of air-cooled unit testing and comprises a shell provided with an opening; the motor is fixed in the shell and is electrically connected with a control electric box mounted on the shell; the reel is supported in the shell; one end of the roller shutter is fixed on the reel, the other end of the roller shutter extends out of the opening and is used for being connected with a to-be-tested unit, and a one-way air opening is formed in the surface of the roller shutter; the shielding curtain is flexibly connected with the roller shutter, so that the shielding curtain can shield the one-way air opening in an up-down floating manner; when the to-be-tested unit is not started, the pressure above the roller shutter is negative, the shielding curtain floats upwards to open the one-way air opening, so that the upper pressure and the lower pressure are balanced, and when the to-be-tested unit is started, the pressure above the roller shutter is positive, and the shielding curtain floats downwards to close the one-way air opening, so that upper and lower heat transfer is isolated. The air outlet section and the air inlet section of the unit can be well isolated, and the situation that the air inlet temperature is affected due to the fact that hot air exhausted by the unit is too large and cannot be absorbed by a laboratory processing fan is avoided.

Description

Technical Field

[0001] The utility model relates to the field of air-cooled unit testing, and particularly to a device for uniform air field temperature in an air-cooled laboratory. Background Art

[0002] With the gradual improvement of people's living standards, air-conditioning technology has been widely applied in modern buildings. Air-cooled chillers (heat pumps) are energy-saving and environmentally friendly devices that use air sources for refrigeration and heating. They are deeply favored by the market for their simple structure, excellent performance, and wide operating range. Performance testing is the most important part of air-cooled chillers (heat pumps). They need to operate under specific inlet air temperature and inlet and outlet water temperature conditions. The inlet air temperature affects the condensation temperature of the unit, and the evaporation temperature determines the cooling capacity, heating capacity, and COP of the unit. When air-cooled chillers (heat pumps) refrigerate, the condensation temperature is relatively high, and axial fans discharge a large amount of hot air. The discharged hot air has a large volume and cannot be completely absorbed by the working condition treatment fan. The outlet air will mix into the inlet section and cause uneven air field and inconsistent inlet air temperature in the laboratory. Therefore, precise control of the inlet air temperature during the entire testing process is particularly important. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a device for uniform air field temperature in an air-cooled laboratory. The device has a simple structure and strong practicability. It can be applied to laboratories of different sizes and test units of different sizes. It can well isolate the outlet air and inlet section of the unit, prevent the hot air discharged due to the high condensation temperature when the unit refrigerates from affecting the inlet air temperature because its large volume cannot be absorbed by the laboratory treatment fan, and can better solve the adverse situation that the pressure above and below the thermal insulation cotton is unbalanced when the unit fan is not turned on, resulting in excessive stress on the thermal insulation cotton. It can play a better pressure balance role especially when the unit defrosts during heating.

[0004] The purpose of the utility model is completed through the following technical solutions: This device for uniform air field temperature in an air-cooled laboratory includes:

[0005] A housing with an opening thereon;

[0006] A motor fixed inside the housing and electrically connected to a control electrical box installed on the housing;

[0007] A reel supported inside the housing;

[0008] A rolling curtain, one end of which is fixed on the reel, and the other end extends out of the opening for connecting the unit to be tested. A one-way air outlet is provided on the surface of the rolling curtain; and

[0009] A shielding curtain flexibly connected to the rolling curtain to shield the one-way air outlet in a floating manner up and down;

[0010] The motor drives the reel to rotate through a belt, so that the rolling curtain is released or retracted from the opening. When the unit under test is not started, the upper part of the rolling curtain is under negative pressure, and the shielding curtain floats upward to open the one-way air vent, so that the upper and lower pressures are balanced. When the unit under test is started, the upper part of the rolling curtain is under positive pressure, and the shielding curtain floats downward to close the one-way air vent, isolating the heat transfer between the upper and lower parts.

[0011] As a further technical solution, end plates are provided at both ends of the housing. One side of the end plate is connected to the back plate, and the other side of the end plate is connected to the front plate. The opening is formed on the front plate.

[0012] As a further technical solution, the control electric box is fixed on one of the end plates. The control electric box is used to receive the infrared signal of the remote control and control the rotation direction of the motor.

[0013] As a further technical solution, a shell cover is further included. One end of the shell cover is hinged to the back plate, and the other end of the shell cover is snap-connected to the front plate, which is convenient for opening and maintenance.

[0014] As a further technical solution, both ends of the reel are supported on the end plates through bearings.

[0015] As a further technical solution, a manual pull rope is also connected to the reel. The manual pull rope passes through the housing and is used to manually control the rotation direction of the reel.

[0016] As a further technical solution, the four corners of the shielding curtain are flexibly connected to the rolling curtain through fixing belts.

[0017] As a further technical solution, a plurality of fixing holes are uniformly formed at one end of the rolling curtain connected to the unit under test.

[0018] As a further technical solution, both the shielding curtain and the rolling curtain are made of aluminum foil heat-insulating and heat-preserving cotton, and the aluminum foil heat-insulating and heat-preserving cotton adopts a double-layer aluminum foil design.

[0019] The beneficial effects of the present utility model are as follows:

[0020] 1. The structure is simple and the practicability is strong, and it can be applied to laboratories of different sizes and test units of different sizes;

[0021] 2. The reel can be driven in two ways, namely by the motor and the manual pull rope, and the aluminum foil heat-insulating and heat-preserving cotton can be electrically and manually controlled to be retracted and released;

[0022] 3. The air outlet and return air of the unit under test are isolated by the rolling curtain (shielding curtain), and the inlet air temperature of the unit under test is kept uniform and stable;

[0023] 4. The rolling curtain and the shielding curtain are made of aluminum foil heat-insulating and heat-preserving cotton, which can well isolate the heat exchange between the air outlet and the return air;

[0024] 5. The one-way air outlet is designed to open automatically when the unit fan is not running, balance the air pressure in the laboratory wind field, and prevent excessive stress on the aluminum foil heat insulation cotton. Description of the Drawings

[0025] Figure 1 Schematic diagram of the three-dimensional structure of the present invention Figure 1 。

[0026] Figure 2 Schematic diagram of the three-dimensional structure of the present invention Figure 2 。

[0027] Description of reference numerals: motor 1, belt 2, reel 3, end plate 4, shell cover 5, housing 6, back plate 7, control electrical box 8, remote control 9, manual pull cord 10, shielding curtain 11, one-way air outlet 12, fixing hole 13, rolling curtain 14, fixing belt 15, bearing 16, opening 17, front plate 18. Detailed Description of the Invention

[0028] The following will introduce the present invention in detail with reference to the drawings:

[0029] Embodiment: As shown in the attached Figure 1 、 2 figure, the device for evenly distributing the temperature of the air-cooled laboratory wind field includes a motor 1, a belt 2, a reel 3, an end plate 4, a shell cover 5, a housing 6, a back plate 7, a control electrical box 8, a remote control 9, a manual pull cord 10, a shielding curtain 11, a one-way air outlet 12, a fixing hole 13, a rolling curtain 14, a fixing belt 15, a bearing 16, an opening 17, and a front plate 18.

[0030] Referring to the attached Figure 1 figure, an end plate 4 is provided at both the front and rear ends of the housing 6. The left side of the end plate 4 is connected to the back plate 7, and the right side of the end plate 4 is connected to the front plate 18. An opening 17 is provided at the lower position of the front plate 18.

[0031] The motor 1 is fixedly installed in the housing 6 through fasteners (motor bracket). The output end of the motor 1 is connected to the belt 2, and the reel 3 is driven to rotate through the belt 2. Both ends of the reel 3 are supported on the end plate 4 through the bearing 16.

[0032] The rolling curtain 14 has a fixed end and a free end. The fixed end is fixedly connected to the reel 3, and the free end of the rolling curtain 14 extends outwards from the opening 17. Preferably, a plurality of fixing holes 13 are evenly formed at the edge position of the free end of the rolling curtain 14 to facilitate the connection and fixation with the unit under test. Further, a one-way air vent 12 is formed at the middle position on the surface of the rolling curtain 14. The four corners of the shielding curtain 11 are flexibly connected to the rolling curtain 14 through fixing straps 15, so that the shielding curtain 11 can float up and down to shield the one-way air vent 12. When the motor 1 is started, it drives the reel 3 to rotate, so that the rolling curtain 14 is released or retracted from the opening 17. When the unit under test is not started, the upper part of the rolling curtain 14 is under negative pressure. Under the action of air pressure, the shielding curtain 11 floats upwards to open the one-way air vent 12, so that the upper and lower pressures are balanced. When the unit under test is started, the upper part of the rolling curtain 14 is under positive pressure. Under the action of air pressure, the shielding curtain 11 floats downwards to block the one-way air vent 12, closing the one-way air vent 12 and isolating the heat transfer between the upper and lower parts.

[0033] Further, as Figure 1 , 2 shown, the motor 1 is electrically connected to the control electric box 8 installed on the housing 6. The control electric box 8 is fixed on one of the end plates 4. The control electric box 8 can receive the infrared signal from the remote controller 9 and control the rotation direction of the motor 1, thereby electrically controlling the release or retraction of the rolling curtain 14. In addition, a manual pull cord 10 is connected to the reel 3. The manual pull cord 10 passes through the housing 6 and can manually control the rotation direction of the reel 3, and can be manually controlled when the motor 1 fails to continue the test.

[0034] Preferably, a housing cover 5 is further provided at the top of the housing 6. One end of the housing cover 5 is hinged to the back plate 7, and the other end of the housing cover 5 is snap-connected to the front plate 18, which is convenient for opening and maintenance. At the same time, the housing cover 5 also plays a role in preventing dust from entering the housing 6. Both the shielding curtain 11 and the rolling curtain 14 are made of aluminum foil heat-insulating and heat-preserving cotton, and the aluminum foil heat-insulating and heat-preserving cotton adopts a double-layer aluminum foil design, which can effectively isolate heat transfer.

[0035] Working process of the utility model: During testing, a start signal is sent using the remote control 9. After the control electric box 8 receives the signal, the motor 1 operates. The operation of the motor 1 drives the reel 3 to rotate, and the rolling curtain 14 unfolds as the reel 3 rotates, connecting the fixing holes 13 to the unit under test. When the unit under test is being tested, the laboratory starts the fan, creating a negative pressure above the rolling curtain 14. The shielding curtain 11 floats upward under the action of air pressure, and the one-way air vent 12 is opened, allowing the rolling curtain 14 to communicate up and down and achieving pressure balance. After the unit under test is powered on and the fan starts, a positive pressure is generated above the rolling curtain 14. Under the action of air pressure, the shielding curtain 11 floats downward to block the one-way air vent 12, closing the one-way air vent 12 and isolating the heat transfer between the upper and lower parts. Since the one-way air vent 12 is closed, the shielding curtain 11 and the rolling curtain 14 made of aluminum foil heat-insulating and heat-preserving cotton isolate the incoming air and the outgoing air, and the incoming air temperature is not affected by the outgoing air. When the unit is in the defrosting mode during heating, the fan is turned off, creating a negative pressure above the rolling curtain 14. The one-way air vent 12 opens upward to achieve pressure balance between the upper and lower parts. After the defrosting is completed and the fan starts, the one-way air vent 12 is closed, and the aluminum foil heat-insulating and heat-preserving cotton isolates the incoming air and the outgoing air, and the incoming air temperature is not affected by the outgoing air.

[0036] It can be understood that for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present utility model should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A device for uniform air field temperature in an air-cooled laboratory, characterized in that: include: A housing (6) having an opening (17) thereon; The motor (1) is fixed in the housing (6) and is electrically connected to a control electric box (8) mounted on the housing (6); A reel (3) supported in a housing (6); A rolling curtain (14), one end of which is fixed on the reel (3) and the other end of which extends out from the opening (17) and is used to connect to the unit to be tested. A one-way air outlet (12) is provided on the surface of the rolling curtain (14); as well as The shielding curtain (11) is flexibly connected to the rolling curtain (14) so ​​that it can float up and down to shield the one-way air outlet (12); The motor (1) drives the reel (3) to rotate via the belt (2), so that the rolling curtain (14) is released or retracted from the opening (17). When the unit to be tested is not started, there is negative pressure above the rolling curtain (14), and the shielding curtain (11) floats upward to open the one-way air outlet (12), so that the upper and lower pressures are balanced. When the unit to be tested is started, there is positive pressure above the rolling curtain (14), and the shielding curtain (11) floats downward to close the one-way air outlet (12), thereby isolating the upper and lower heat transfer.

2. The device for uniform air field temperature in an air-cooled laboratory according to claim 1, characterized in that: End plates (4) are provided at both ends of the shell (6), one side of the end plate (4) is connected to the back plate (7), and the other side of the end plate (4) is connected to the front plate (18), and the opening (17) is provided on the front plate (18).

3. The device for uniform air field temperature in an air-cooled laboratory according to claim 2, characterized in that: The control electric box (8) is fixed on one of the end plates (4). The control electric box (8) is used to receive infrared signals from a remote controller (9) and control the running direction of the motor (1).

4. The device for uniform air field temperature in an air-cooled laboratory according to claim 2, characterized in that: The utility model also comprises a shell cover (5), one end of which is hinged on the back plate (7), and the other end of which is snap-fitted to the front plate (18) for easy opening and maintenance.

5. The device for uniform air field temperature in an air-cooled laboratory according to claim 2, characterized in that: Both ends of the reel (3) are supported on the end plate (4) via bearings (16).

6. The device for uniform air field temperature in an air-cooled laboratory according to claim 1, characterized in that: The reel (3) is also connected to a manual pull rope (10), which passes through the housing (6) and is used to manually control the rotation direction of the reel (3).

7. The device for uniforming the air field temperature of an air-cooled laboratory according to claim 1 is characterized in that: The four corners of the shielding curtain (11) are flexibly connected to the rolling curtain (14) via fixing belts (15).

8. The device for uniforming the air field temperature of an air-cooled laboratory according to claim 1 is characterized in that: A plurality of fixing holes (13) are evenly arranged at one end of the rolling curtain (14) connected to the unit to be tested.

9. The device for uniforming the air field temperature of an air-cooled laboratory according to any one of claims 1 to 8, characterized in that: The shielding curtain (11) and the rolling curtain (14) are both made of aluminum foil heat insulation cotton, and the aluminum foil heat insulation cotton adopts a double-layer aluminum foil design.

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