Differential pressure type refrigeration unit

Abstract

The utility model relates to refrigerating unit technical field, concretely is a differential pressure type refrigerating unit, include: refrigerating unit body, the top of refrigerating unit body is provided with two ejection mechanism, two the ejection mechanism all place have filter screen, and the outer surface of two filter screens all are provided with two slot, two the ejection mechanism is provided with two locking mechanism respectively, the utility model discloses under the action of two ejection mechanism, two locking mechanism and four slots, only need staff to pass through the mode of pressing and pulling, can let staff easily install and dismount two filter screens, conveniently change maintenance to two filter screens, do not need to use the tool to unscrew the bolt, reduce the labor intensity, also improve maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration unit technology, specifically a differential pressure refrigeration unit. Background Technology

[0002] A differential pressure refrigeration unit is a device that uses pressure differences to achieve a cooling effect. Its working principle mainly relies on the physical phenomenon that gases absorb and release heat when their pressure changes. When a gas is compressed under high pressure, it generates heat. Conversely, when a gas expands, it absorbs heat. The differential pressure refrigeration unit uses this principle to achieve the purpose of cooling through continuous cycles of high and low pressure changes.

[0003] Currently, traditional differential pressure refrigeration units still have some shortcomings. In order to dissipate the heat inside the refrigeration unit, a fan is installed on the top of the refrigeration unit. To prevent dust from entering the fan, a protective filter screen is usually installed around the fan. Since the filter screen is fixed by multiple bolts, over time, the surface of the filter screen will be covered with dust or become damaged. Therefore, workers need to use tools to loosen the bolts one by one to remove the filter screen for maintenance, which increases the labor intensity of workers and reduces the efficiency of maintenance. To address this, we propose a differential pressure refrigeration unit. Utility Model Content

[0004] In view of the shortcomings of the prior art mentioned in the background, the present invention provides a differential pressure refrigeration unit.

[0005] This utility model overcomes the above technical problems by adopting the following technical solution:

[0006] A differential pressure refrigeration unit includes: a refrigeration unit body, two ejection mechanisms on the top of the refrigeration unit body, each ejection mechanism having a filter screen, and each filter screen having two slots on its outer surface; two locking mechanisms on each ejection mechanism, and the four locking mechanisms being movably engaged with the four slots; a rotating mechanism and two protective mechanisms on the top of the refrigeration unit body, the two protective mechanisms being located on both sides of the rotating mechanism and engaging with the rotating mechanism.

[0007] As a further embodiment of this utility model: the ejection mechanism includes an annular seat, an annular groove, multiple spring telescopic rods and an annular pad. The annular seat is connected to the bottom of the refrigeration unit body, the annular groove is opened inside the annular seat, the multiple spring telescopic rods are in a contracted state and are connected at equal intervals to the bottom of the inner wall of the annular groove, and the annular pad is connected to the top of the multiple spring telescopic rods.

[0008] As a further embodiment of this utility model: the locking mechanism includes two retractable guide rods and a handle. The two retractable guide rods are fixedly connected to the outer surface of the annular seat, and one side of the handle is connected to one end of the two retractable guide rods.

[0009] As a further embodiment of this utility model: the locking mechanism further includes a trapezoidal block and a return spring. The trapezoidal block is slidably connected to the outer surface of the annular seat, and one end of the trapezoidal block extends into the interior of the annular groove and is movably inserted into the interior of one of the slots. The return spring is connected between the outer surface of the annular seat and one side of the handle and is located outside the trapezoidal block.

[0010] As a further embodiment of this utility model: the rotating mechanism includes a U-shaped frame, a worm gear and a throttle handle. The U-shaped frame is fixedly connected to the top of the refrigeration unit body, the worm gear is rotatably connected to the inner side of the U-shaped frame, and the throttle handle is rotatably connected to the back of the U-shaped frame, with one end of the throttle handle extending to the inner side of the U-shaped frame and connected to one end of the worm gear.

[0011] As a further embodiment of this utility model: the protective mechanism includes a vertical rod, a worm gear, a connecting plate, and a protective plate. The vertical rod is rotatably connected to the top of the refrigeration unit body. The worm gear is fixedly connected to the outer surface of the vertical rod and meshes with a worm. The connecting plate is fixedly connected to the outer surface of the vertical rod. The protective plate is connected to one end of the connecting plate and is located on top of one of the filters.

[0012] As a further improvement of this utility model: the top and bottom of the protective plate are both arc-shaped, and a buffer base is connected to the bottom of the refrigeration unit body.

[0013] By adopting the above structure, this utility model has the following advantages compared with the prior art:

[0014] 1. With the help of two ejection mechanisms, two locking mechanisms and four slots, the two filters can be easily installed and removed by the operator by pressing and pulling. This makes it convenient to replace and maintain the two filters without the need to use tools to unscrew the bolts, reducing labor intensity and improving maintenance efficiency.

[0015] 2. In this utility model, through the action of the rotating mechanism and the two protective mechanisms, not only can the two filters be protected from rain in rainy weather, preventing rainwater from entering the interior of the refrigeration unit and corroding the components, but the hot air discharged from the interior of the refrigeration unit can also be guided to ensure normal heat dissipation. At the same time, the two rotating mechanisms can be easily moved away, so as not to block the two filters, thus facilitating subsequent maintenance operations on the two filters. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a diagram showing the location of the slots;

[0018] Figure 3 This is a cross-sectional schematic diagram of the ejection mechanism of this utility model;

[0019] Figure 4 for Figure 3 Enlarged view of point A;

[0020] Figure 5 This is a schematic diagram of the structure of the rotating mechanism and the protective mechanism of this utility model;

[0021] Figure 6 This is a plan view of one side of the protective plate.

[0022] In the diagram: 1. Refrigeration unit body; 2. Ejection mechanism; 201. Annular seat; 202. Annular groove; 203. Spring telescopic rod; 204. Annular pad; 3. Filter screen; 4. Locking mechanism; 401. Retraction guide rod; 402. Handle; 403. Trapezoidal block; 404. Return spring; 5. Rotation mechanism; 501. U-shaped frame; 502. Worm gear; 503. Turning handle; 6. Protective mechanism; 601. Vertical rod; 602. Worm gear; 603. Connecting plate; 604. Protective plate; 7. Buffer base. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1:

[0025] Please see Figures 1-6 In this embodiment of the present invention, a differential pressure refrigeration unit includes: a refrigeration unit body 1, two ejection mechanisms 2 are provided on the top of the refrigeration unit body 1, each ejection mechanism 2 is equipped with a filter screen 3, and the outer surface of each filter screen 3 is provided with two slots, each ejection mechanism 2 is provided with two locking mechanisms 4, and the four locking mechanisms 4 are movably connected to the four slots respectively, and the top of the refrigeration unit body 1 is provided with a rotating mechanism 5 and two protective mechanisms 6, and the two protective mechanisms 6 are located on both sides of the rotating mechanism 5 and mesh with the rotating mechanism 5.

[0026] Specifically, by pulling the two locking mechanisms 4 on one of the ejection mechanisms 2, the two locking mechanisms 4 are disengaged from the two slots on the outer surface of one of the filter screens 3, releasing the fixation of one of the filter screens 3. At this time, one of the ejection mechanisms 2 will reset and eject one of the filter screens 3, allowing the filter screen 3 to be removed and disassembled. During installation, simply place one of the filter screens 3 into the interior of one of the ejection mechanisms 2 and press it down, causing the filter screen 3 to squeeze the two locking mechanisms 4. When the filter screen 3 is pressed to a certain extent, the two locking mechanisms 4 will reset and insert into the two slots, locking the filter screen 3 and thus completing the installation of one of the filter screens 3. Under the action of the two protective mechanisms 6, the refrigeration unit body 1 can be effectively protected from rain without affecting the heat dissipation effect of the refrigeration unit body 1. At the same time, rotating the rotating mechanism 5 can drive the two protective mechanisms 6 to rotate in opposite directions, no longer obstructing the two filter screens 3, facilitating subsequent maintenance of the two filter screens 3.

[0027] Example 2:

[0028] Please see Figures 2-4 In this embodiment of the present invention, a differential pressure refrigeration unit includes an ejector mechanism 2 comprising an annular seat 201, an annular groove 202, multiple spring telescopic rods 203, and an annular pad 204. The annular seat 201 is connected to the bottom of the refrigeration unit body 1. The annular groove 202 is formed inside the annular seat 201. The multiple spring telescopic rods 203 are in a retracted state and are equidistantly connected to the bottom of the inner wall of the annular groove 202. The annular pad 204 is connected to the top of the multiple spring telescopic rods 203. The locking mechanism 4 includes two retractable guide rods 401 and a handle 402. Both retraction guide rods 401 are fixedly connected to the outer surface of the annular seat 201. One side of the handle 402 is connected to one end of the two retraction guide rods 401. The locking mechanism 4 also includes a trapezoidal block 403 and a return spring 404. The trapezoidal block 403 is slidably connected to the outer surface of the annular seat 201, and one end of the trapezoidal block 403 extends into the interior of the annular groove 202 and is movably inserted into the interior of one of the slots. The return spring 404 is connected between the outer surface of the annular seat 201 and one side of the handle 402 and is located outside the trapezoidal block 403.

[0029] Specifically, pulling handle 402 causes two retractable guide rods 401 to extend, allowing the trapezoidal block 403 to slide outward inside the annular seat 201 and retract from the inside of one of the slots, releasing the fixation of one of the filter screens 3. At the same time, the return spring 404 will stretch, and then multiple retractable spring telescopic rods 203 will return to their original position and extend, causing the annular pad 204 to rise, pushing one of the filter screens 3 out of the annular groove 202. Then, removing the filter screen 3 completes the disassembly. Place one of the filter screens 3 into the annular groove 202 and press one of the filter screens 3 to make the annular groove 202 open. As the pad 204 descends, it compresses multiple spring telescopic rods 203 to retract. When the annular pad 204 and one of the filter screens 3 descend, they compress the trapezoidal block 403 to slide towards the outer surface of the annular seat 201 until the annular pad 204 is located at the lower part of the trapezoidal block 403, and one of the slots on the outer surface of one of the filter screens 3 is flush with the trapezoidal block 403. At this point, the pressure on the trapezoidal block 403 will cease, and finally, the return spring 404 will reset, causing the trapezoidal block 403 to re-insert into one of the slots, thus completing the fixation of one of the filter screens 3 and facilitating the convenient installation of one of the filter screens 3.

[0030] Example 3:

[0031] Please see Figures 1-6 In this embodiment of the present invention, a differential pressure refrigeration unit includes a rotating mechanism 5 comprising a U-shaped frame 501, a worm gear 502, and a throttle 503. The U-shaped frame 501 is fixedly connected to the top of the refrigeration unit body 1. The worm gear 502 is rotatably connected to the inner side of the U-shaped frame 501. The throttle 503 is rotatably connected to the back of the U-shaped frame 501, and one end of the throttle 503 extends into the inner side of the U-shaped frame 501 and connects to one end of the worm gear 502. The protective mechanism 6 includes a vertical rod 601, a worm wheel 602, and a connecting rod. Plate 603 and protective plate 604, vertical rod 601 is rotatably connected to the top of the refrigeration unit body 1, worm gear 602 is fixedly connected to the outer surface of vertical rod 601 and meshes with worm 502, connecting plate 603 is fixedly connected to the outer surface of vertical rod 601, protective plate 604 is connected to one end of connecting plate 603 and is located on top of one of the filters 3, the top and bottom of protective plate 604 are both arc-shaped, and a buffer base 7 is connected to the bottom of refrigeration unit body 1.

[0032] Specifically, by rotating the throttle 503, the worm gear 502 is driven to rotate, which in turn drives the worm wheel 602 to rotate the vertical rod 601. The vertical rod 601, through the connecting plate 603, drives the protective plate 604 to rotate in an arc shape, thus eliminating the need to cover the top of one of the filter screens 3, making it easy to disassemble and maintain one of the filter screens 3. Under the action of the protective plate 604, not only can the inside of the refrigeration unit body 1 be waterproofed in rainy weather, but it can also guide rainwater and guide the hot air blown out of the refrigeration unit body 1 to be discharged into the external environment, ensuring the heat dissipation effect of the refrigeration unit body 1 in rainy weather. Under the action of the buffer base 7, the stability of the refrigeration unit body 1 can be improved and the noise generated during operation can be reduced.

[0033] The working principle of this utility model is as follows: During use, the dust is filtered by the two filters 3, which can protect the fan inside the refrigeration unit body 1 from dust. When it is necessary to clean the two filters 3, the operator only needs to pull the handle 402. The handle 402 drives the two retractable guide rods 401 to extend, and the trapezoidal block 403 will slide on the outer surface of the annular seat 201 and retract from the inside of one of the slots, releasing the fixation of one of the filters 3. At the same time, the return spring 404 will be stretched, and at this time, the multiple retracted spring telescopic rods 203 will return to their original position and extend, driving the annular seat 201 to extend. The pad 204 rises, pushing one of the filter screens 3 out of the annular groove 202. At this point, the worker can remove the filter screen 3 for disassembly, facilitating subsequent cleaning and maintenance. During installation, the worker simply places one filter screen 3 into the annular groove 202, where the bottom of the filter screen 3 will align with the top of the annular pad 204. Pressing down on the filter screen 3 lowers the annular pad 204, causing the multiple spring-loaded telescopic rods 203 to retract. The descent of the annular pad 204 and the filter screen 3 simultaneously compresses the trapezoidal block 40. 3. Slide the annular pad 204 onto the outer surface of the annular seat 201 until the annular pad 204 is located at the lower part of the trapezoidal block 403, and one of the slots on the outer surface of one of the filter screens 3 is flush with the trapezoidal block 403. At this time, the pressure on the trapezoidal block 403 will be relieved, and the return spring 404 will reset, causing the trapezoidal block 403 to re-insert into one of the slots, thereby completing the fixation of one of the filter screens 3. This completes the convenient installation of one of the filter screens 3. Due to the arc shape of the top and bottom of the protective plate 604, not only can rainwater be guided, but the interior of the refrigeration unit body 1 can also be vented. The blown hot air, guided by an arc, is discharged into the external environment, providing rain protection for the interior of the refrigeration unit 1 while ensuring its heat dissipation during rainy days. Furthermore, turning the handle 503 causes the worm gear 502 to rotate inside the U-shaped frame 501, which in turn drives the worm wheel 602 to rotate the vertical rod 601. The vertical rod 601 then causes the connecting plate 603 to rotate in an arc shape, thus preventing the protective plate 604 from obstructing the top of one of the filter screens 3, allowing for easy disassembly and maintenance of that filter screen.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention.

Claims

1. A differential pressure refrigeration unit, characterized in that, include: The refrigeration unit body (1) has two ejection mechanisms (2) on its top. Each ejection mechanism (2) has a filter screen (3) on it, and each filter screen (3) has two slots on its outer surface. Each ejection mechanism (2) has two locking mechanisms (4) on it, and each locking mechanism (4) is movably connected to one of the four slots. The top of the refrigeration unit body (1) has a rotating mechanism (5) and two protective mechanisms (6), and the two protective mechanisms (6) are located on both sides of the rotating mechanism (5) and mesh with the rotating mechanism (5).

2. The differential pressure refrigeration unit according to claim 1, characterized in that, The ejection mechanism (2) includes an annular seat (201), an annular groove (202), multiple spring telescopic rods (203), and an annular pad (204). The annular seat (201) is connected to the bottom of the refrigeration unit body (1). The annular groove (202) is opened inside the annular seat (201). The multiple spring telescopic rods (203) are in a contracted state and are connected at equal intervals to the bottom of the inner wall of the annular groove (202). The annular pad (204) is connected to the top of the multiple spring telescopic rods (203).

3. A differential pressure refrigeration unit according to claim 2, characterized in that, The locking mechanism (4) includes two retractable guide rods (401) and a handle (402). The two retractable guide rods (401) are fixedly connected to the outer surface of the annular seat (201), and one side of the handle (402) is connected to one end of the two retractable guide rods (401).

4. A differential pressure refrigeration unit according to claim 3, characterized in that, The locking mechanism (4) further includes a trapezoidal block (403) and a return spring (404). The trapezoidal block (403) is slidably connected to the outer surface of the annular seat (201), and one end of the trapezoidal block (403) extends into the interior of the annular groove (202) and is movably inserted into the interior of one of the slots. The return spring (404) is connected between the outer surface of the annular seat (201) and one side of the handle (402) and is located outside the trapezoidal block (403).

5. A differential pressure refrigeration unit according to claim 1, characterized in that, The rotating mechanism (5) includes a U-shaped frame (501), a worm gear (502), and a throttle (503). The U-shaped frame (501) is fixedly connected to the top of the refrigeration unit body (1). The worm gear (502) is rotatably connected to the inner side of the U-shaped frame (501). The throttle (503) is rotatably connected to the back of the U-shaped frame (501), and one end of the throttle (503) extends to the inner side of the U-shaped frame (501) and is connected to one end of the worm gear (502).

6. A differential pressure refrigeration unit according to claim 1, characterized in that, The protective mechanism (6) includes a vertical rod (601), a worm gear (602), a connecting plate (603), and a protective plate (604). The vertical rod (601) is rotatably connected to the top of the refrigeration unit body (1). The worm gear (602) is fixedly connected to the outer surface of the vertical rod (601) and meshes with the worm (502). The connecting plate (603) is fixedly connected to the outer surface of the vertical rod (601). The protective plate (604) is connected to one end of the connecting plate (603) and is located on top of one of the filters (3).

7. A differential pressure refrigeration unit according to claim 6, characterized in that, The top and bottom of the protective plate (604) are both arc-shaped, and the bottom of the refrigeration unit body (1) is connected to a buffer base (7).

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