Micro-positive pressure refrigerating machine capable of reducing number of fans
By installing an evaporating fan and a condensing fan in the refrigeration unit and utilizing the internal and external circulation pressure difference to form a micro-positive pressure, the problem that the refrigerator is difficult to achieve cooling and maintain a micro-positive pressure in a closed space at the same time is solved. The micro-positive pressure effect of the static pressure difference is achieved, and fan failure and vibration are reduced.
Patent Information
- Application Number
- CN202422779080.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-14
AI Technical Summary
Existing refrigerators are unable to meet the micro-positive pressure requirements in confined spaces while providing cooling, especially in places such as electrical control equipment cabinets with high protection requirements, clean operating rooms, and infectious disease wards that need to prevent cross infection.
By installing an evaporating fan and a condensing fan in the refrigeration unit, air flow is achieved by utilizing the pressure difference between the internal and external circulations. The evaporating fan forms a micro-positive pressure in the enclosed space, and the condensing fan forms a positive pressure outside. The static pressure difference is used to avoid fan failure and vibration, and a square micro-positive pressure filter is used to promote air flow.
It achieves the goal of maintaining a slightly positive pressure in the enclosed space during the refrigeration process, reduces fan failures and maintenance requirements, reduces unit vibration, and meets the pressure requirements of the enclosed space.
Smart Images
Figure CN223460676U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of micro positive pressure refrigerating machine, and specifically relates to a micro positive pressure refrigerating machine capable of reducing a fan. BACKGROUND
[0002] A fan is used to drive air to flow, and its essential principle is that the fan is only used to generate a pressure difference, and the pressure difference is the essence of causing air flow. In order to keep a relatively closed space at a certain pressure, it is necessary to ensure that the air entering the closed space is not less than the permeation amount of the space to the outside. In order to let air enter the closed space, it is necessary to provide a greater pressure than the closed space, and air is sent into the closed space by using the pressure difference, so as to maintain the closed space at a certain pressure. A refrigerating machine is a machine that transfers the heat of a cooled object with a lower temperature to an environmental medium, thereby obtaining cold.
[0003] At present, for some closed spaces, such as electric control equipment cabinets with protection requirements, operating rooms with clean requirements, and infectious disease rooms for preventing cross infection, the positive pressure demand in the closed space needs to be considered to prevent the penetration of the space outside the space into the closed space. However, in the use of the current refrigerating machine, a fan is usually arranged at the air inlet of the refrigerating machine to prevent dust from the outside from entering the room. However, the refrigerating machine in the prior art cannot use the fan inside the unit to realize refrigeration while ensuring that the room is micro positive pressure.
[0004] Therefore, the micro positive pressure refrigerating machine capable of reducing a fan is proposed, which can use the fan inside the unit to realize refrigeration while ensuring that the room is micro positive pressure. UTILITY MODEL CONTENTS
[0005] In order to overcome the problem that the refrigerating machine in the prior art cannot use the fan inside the unit to realize refrigeration while ensuring that the room is micro positive pressure, the micro positive pressure refrigerating machine capable of reducing a fan is proposed.
[0006] The technical scheme of the utility model is as follows: the micro positive pressure refrigerating machine capable of reducing a fan comprises a rack, and is characterized in that a machine shell is arranged at the right end of the rack through screws, a first fixing block is fixedly connected to the upper part of the right end of the machine shell, a first fixing assembly is arranged at the right end of the first fixing block, a second fixing assembly is arranged at the lower part of the right end of the machine shell, a wind path inlet is arranged at the middle part of the right end of the machine shell, a wind path outlet is arranged at the upper part of the right end of the machine shell, a condensing fan and a compressor are arranged at the bottom end inside the rack, a condenser is arranged at the middle part of the inner wall of the rack, the air outlet end of the condensing fan faces away from the machine shell, an evaporator is arranged at the right side of the middle part of the inner wall of the rack, a micro positive pressure filter is arranged at the upper part of the right end of the condenser, an evaporating fan and an air heater are arranged at the upper part of the inner wall of the rack, the evaporator is arranged on the air inlet opening of the inner circulation of the rack through screws, the condenser is arranged on the air outlet opening of the outer circulation of the rack through screws, and the micro positive pressure filter is embedded on the inner and outer circulation separation plate of the rack.
[0007] Preferably, the refrigeration unit scheme causes air to flow in the system by pressure difference caused by the evaporation fan and the condensation fan, the evaporation fan sends air into the micro-positive pressure space, and after the air passes through the evaporator, it returns to the suction end of the evaporation fan; when external circulation is required, the condensation fan sucks air from the environment through the pressure difference, sends the air to the condenser through the air duct, and finally discharges the hot air to the atmosphere;
[0008] The shapes of the evaporation fan and the condensation fan are circular, and the function is to push air to flow by pressure difference. The evaporation fan causes the air in the micro-positive pressure space to flow, and forms a negative pressure on the inside of the micro-positive pressure filter. The condensation fan causes the air outside the rack room to flow, and forms a positive pressure on the outside of the micro-positive pressure filter. The micro-positive pressure filter is a square grid structure, which uses the pressure difference on both sides to promote the flow of high-pressure air outside to the low-pressure space inside, thereby maintaining the micro-positive pressure inside. This scheme removes the fan required for micro-positive pressure by using the pressure difference between the inside and outside circulation, avoiding fan failure and maintenance problems, achieving micro-positive pressure by using static pressure difference, eliminating the need for moving parts, reducing unit vibration, and effectively solving the problem that the existing technology is difficult to achieve refrigeration and indoor micro-positive pressure at the same time.
[0009] As a preferred, the shape of the evaporation fan is circular, the shape of the condensation fan is circular, and the shape of the micro-positive pressure filter is square. The air outlet of the condensation fan and the micro-positive pressure inlet of the micro-positive pressure filter are interconnected, and the air outlet of the condensation fan is also connected with the outlet of the air duct.
[0010] As a preferred, the first fixed assembly includes a second fixed block, a first threaded column, a fixed frame, a second threaded column, a fixed plate, a bolt, and a threaded sleeve block. The right end of the first fixed block is fixedly connected with the second fixed block, the front and rear ends of the second fixed block are both threadedly installed with the first threaded column, the end of the first threaded column away from the center of the second fixed block is fixedly connected with the fixed frame, the left and right ends of the fixed frame are both frame-shaped, the inner wall of the fixed frame is slidably provided with the second threaded column, the right end of the second threaded column is fixedly connected with the fixed plate, the left end of the fixed plate is threadedly installed with the bolt at the four corner edges, and the outer wall of the second threaded column is threadedly installed with the threaded sleeve block.
[0011] As a preferred, the rack is located between the two fixed frames, and there is a gap between the end of the fixed frame and the rack.
[0012] As a preferred, the fixed frame and the second threaded column are both made of stainless steel material, and the upper end of the threaded sleeve block is flush with the upper end of the fixed frame.
[0013] As preferred, the second fixing assembly comprises a third fixing block, a third threaded column, a mounting block and a fourth threaded column; the lower part of the right end of the shell is fixedly connected with the third fixing block, the front and rear ends of the third fixing block are both threadedly connected with the third threaded column, the end of the third threaded column away from the third fixing block is fixedly connected with the mounting block, and the left and right ends of the mounting block are threadedly connected with the fourth threaded column in a penetrating mode.
[0014] As preferred, the rack is located between the two mounting blocks, and a gap is formed between the ends of the mounting blocks and the rack.
[0015] The micro-positive pressure refrigerating machine of the present application has the following advantages: the air flows due to the pressure difference caused by the evaporation fan, the air is sent into the micro-positive pressure space by the evaporation fan, and then passes through the evaporator and returns to the suction end of the evaporation fan; when external circulation is needed, the condensing fan causes a pressure difference to suck air from the environment, and then the air passes through the air duct and is sent back to the environment atmosphere through the condenser; since the evaporation fan is circular, it causes a pressure difference and causes the air in the micro-positive pressure space to flow, and at the same time, a negative pressure is formed on the inner side of the micro-positive pressure filter; since the condensing fan is circular, it causes a pressure difference and causes the air outside the rack chamber to flow, and at the same time, a positive pressure is formed on the outer side of the micro-positive pressure filter; since the micro-positive pressure filter is square, it causes the air on the high-pressure side to flow to the low-pressure side, thereby ensuring that the pressure in the inner space is micro-positive pressure; therefore, the micro-positive pressure refrigerating machine of the present application utilizes the pressure difference between the internal and external circulation to remove the fan used for micro-positive pressure, and has no fan failure and maintenance, utilizes static pressure difference to increase micro-positive pressure, has no moving parts, and reduces the vibration of the unit, thereby solving the problem that the refrigerating machine in the prior art is difficult to utilize the fan inside the unit to achieve refrigeration while ensuring that the indoor environment is micro-positive pressure. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 Fig. 1 shows the three-dimensional structure schematic diagram of the micro-positive pressure refrigerating machine with reduced fan of the present application;
[0017] Figure 2 Fig. 2 shows the three-dimensional structure schematic diagram of the shell of the micro-positive pressure refrigerating machine with reduced fan of the present application;
[0018] Figure 3 Fig. 3 shows the cross-sectional three-dimensional structure schematic diagram of the rack of the micro-positive pressure refrigerating machine with reduced fan of the present application;
[0019] Figure 4 Fig. 4 shows the three-dimensional structure schematic diagram of the evaporator of the micro-positive pressure refrigerating machine with reduced fan of the present application;
[0020] Figure 5 Fig. 5 shows the three-dimensional structure schematic diagram of the first fixing assembly of the micro-positive pressure refrigerating machine with reduced fan of the present application;
[0021] Figure 6 The second fixed assembly of the micro-positive pressure refrigerating machine capable of reducing a fan is shown in the three-dimensional structure schematic view.
[0022] The signs in the drawings are: 1, a rack; 2, a machine shell; 3, a first fixed block; 4, a first fixed assembly; 401, a second fixed block; 402, a first threaded column; 403, a fixed frame; 404, a second threaded column; 405, a fixed plate; 406, a bolt; 407, a threaded sleeve block; 5, a second fixed assembly; 501, a third fixed block; 502, a third threaded column; 503, a mounting block; 504, a fourth threaded column; 6, a wind path inlet; 7, a wind path outlet; 8, a condensing fan; 9, a condenser; 10, an evaporator; 11, a micro-positive pressure filter; 12, an evaporating fan; 13, an air heater; 14, a compressor. DETAILED DESCRIPTION
[0023] The utility model is further explained in combination with the drawings and examples.
[0024] Please refer to Figures 1-6 The utility model provides a kind of embodiment: the micro-positive pressure refrigerating machine capable of reducing fan, including rack 1;The right end of rack 1 is equipped with machine shell 2 by screw, the right end upper portion of machine shell 2 is fixedly connected with first fixed block 3, the right end of first fixed block 3 is provided with first fixed assembly 4, the right end lower portion of machine shell 2 is provided with second fixed assembly 5, the right end middle portion of machine shell 2 is provided with wind path inlet 6, the right end upper portion of machine shell 2 is provided with wind path outlet 7, the bottom end in the inside of rack 1 is equipped with condensing fan 8 and compressor 14, the middle portion of the inner wall of rack 1 is provided with condenser 9, the suction end of condensing fan 8 is towards the end away from machine shell 2, the middle portion right of the inner wall of rack 1 is provided with evaporator 10, the right end upper portion of condenser 9 is provided with micro-positive pressure filter 11, the upper portion of the inner wall of rack 1 is provided with evaporating fan 12 and air heater 13, evaporator 10 is installed on the inside circulating air inlet opening of rack 1 by screw, condenser 9 is installed on the air outlet of the outside circulation of rack 1 by screw, micro-positive pressure filter 11 is embedded on the inside and outside circulation partition plate of rack 1.
[0025] When in use, the air flow is caused by the pressure difference of the evaporative fan 12, the evaporative fan 12 sends the air into the micro-positive pressure space, then through the evaporator 10, and back to the suction end of the evaporative fan 12, when the air flow needs to be circulated outside, the condensing fan 8 causes the pressure difference, sucking the air from the environment, then through the air duct, and through the condenser 9 to send back to the environment atmosphere, because the shape of the evaporative fan 12 is circular, its function is to cause the pressure difference and cause the air flow in the micro-positive pressure space, at the same time, the inside of the micro-positive pressure filter 11 forms a negative pressure, the shape of the condensing fan 8 is circular, its function is to cause the pressure difference and cause the air flow outside the rack 1 chamber, at the same time, the outside of the micro-positive pressure filter 11 forms a positive pressure, the shape of the micro-positive pressure filter 11 is square, its function is to use the pressure difference on both sides to cause the air flow from the high pressure outside to the low pressure inside, so as to ensure that the pressure of the inside space is micro-positive pressure, so the refrigeration machine of the scheme uses the pressure difference on both sides of the inside and outside circulation, removes the fan used for micro-positive pressure, has no fan failure and maintenance, uses the static pressure difference to increase the micro-positive pressure, has no moving parts, and reduces the vibration of the unit.
[0026] Please refer to Figures 1-4 In the embodiment, the shape of the evaporative fan 12 is circular, the shape of the condensing fan 8 is circular, the shape of the micro-positive pressure filter 11 is square, the air outlet end of the condensing fan 8 and the micro-positive pressure inlet of the micro-positive pressure filter 11 are communicated, the air outlet end of the condensing fan 8 is also communicated with the air outlet 7, the air flow from the high pressure outside to the low pressure inside can be caused by using the pressure difference on both sides, so as to ensure that the pressure of the inside space is micro-positive pressure.
[0027] Please refer to Figure 1 and Figure 5In the embodiment, the first fixing assembly 4 comprises a second fixing block 401, a first threaded column 402, a fixing frame 403, a second threaded column 404, a fixing plate 405, a bolt 406 and a threaded sleeve block 407. The right end of the first fixing block 3 is fixedly connected with the second fixing block 401. The front and rear ends of the second fixing block 401 are both threadedly connected with the first threaded column 402. The end of the first threaded column 402 away from the center of the second fixing block 401 is fixedly connected with the fixing frame 403. The left and right ends of the fixing frame 403 are both in a frame shape. The inner wall of the fixing frame 403 is slidably provided with the second threaded column 404. The right end of the second threaded column 404 is fixedly connected with the fixing plate 405. The left end of the fixing plate 405 is threadedly connected with the bolt 406 at the four corner edges. The outer wall of the second threaded column 404 is threadedly connected with the threaded sleeve block 407. First, the first threaded column 402 is threadedly connected with the inner wall of the second fixing block 401. Then, the second threaded column 404 is placed on the inner wall of the fixing frame 403, so that the upper end of the second threaded column 404 is attached to the top surface of the inner wall of the fixing frame 403. Then, the threaded sleeve block 407 is threadedly connected with the outer wall of the second threaded column 404. The bolt 406 is passed through the fixing plate 405 and connected with the object. The shell is fixed on the object by the fixing plate 405, so as to fix the shell 2 on the object.
[0028] Please refer to Figure 1 and Figure 5 In the embodiment, the rack 1 is located between the two fixing frames 403. There is a gap between the end of the fixing frame 403 and the rack 1, so as to facilitate the installation of the second threaded column 404.
[0029] Please refer to Figure 1 and Figure 5 In the embodiment, the fixing frame 403 and the second threaded column 404 are both made of stainless steel. The upper end of the threaded sleeve block 407 is flush with the upper end of the fixing frame 403. When the threaded sleeve block 407 is threadedly connected with the outer wall of the second threaded column 404, the fixing frame 403 can be blocked, so as to stably hang and place the shell 2.
[0030] Please refer to Figure 1 and Figure 6 In the embodiment, the second fixing assembly 5 comprises a third fixing block 501, a third threaded column 502, an installation block 503 and a fourth threaded column 504. The right lower end of the shell 2 is fixedly connected with the third fixing block 501. The front and rear ends of the third fixing block 501 are both threadedly connected with the third threaded column 502. The end of the third threaded column 502 away from the third fixing block 501 is fixedly connected with the installation block 503. The left and right ends of the installation block 503 are both threadedly connected with the fourth threaded column 504. The third threaded column 502 is threadedly connected with the inner wall of the third fixing block 501. Then, the fourth threaded column 504 is threadedly connected with the object through the installation block 503, so as to fix the shell 2 on the object.
[0031] Referring to Figure 1 and Figure 6 In the embodiment, the rack 1 is located between the two mounting blocks 503, and a gap is formed between the end where the mounting blocks 503 and the rack 1 are close to each other, facilitating the installation of the fourth threaded column 504.
[0032] Working principle: first, the first threaded column 402 is screwed into the inner wall of the second fixed block 401, then the second threaded column 404 is placed on the inner wall of the fixed frame 403, so that the upper end of the second threaded column 404 is attached to the top surface of the inner wall of the fixed frame 403, then the threaded sleeve block 407 is screwed onto the outer wall of the second threaded column 404, the bolt 406 is passed through the fixed plate 405 and installed on the object, and the shell fixes the fixed plate 405 on the object, realizing the fixation of the shell 2 on the object;
[0033] When the threaded sleeve block 407 is screwed onto the outer wall of the second threaded column 404, the fixed frame 403 can be blocked, thereby realizing the stable hanging placement of the shell 2;
[0034] Then the third threaded column 502 is screwed into the inner wall of the third fixed block 501, and then the fourth threaded column 504 is screwed onto the object through the mounting block 503, so that the shell 2 can be fixed on the object;
[0035] When used, the pressure difference caused by the evaporation fan 12 makes the air flow, the evaporation fan 12 sends the air into the micro-positive pressure space, then passes through the evaporator 10, and then returns to the suction end of the evaporation fan 12, when external circulation is required, the condensation fan 8 causes a pressure difference to suck air from the environment, then passes through the air duct, and then passes through the condenser 9 to return to the environment atmosphere, since the shape of the evaporation fan 12 is circular, its role is to cause a pressure difference and cause the air in the micro-positive pressure space to flow, and at the same time, a negative pressure is formed inside the micro-positive pressure filter 11, the shape of the condensation fan 8 is circular, its role is to cause a pressure difference and cause the air outside the rack 1 chamber to flow, and at the same time, a positive pressure is formed outside the micro-positive pressure filter 11, the shape of the micro-positive pressure filter 11 is square, its role is to use the pressure difference between the two sides to cause the air on the high-pressure side to flow to the low-pressure side space, thereby ensuring that the pressure in the inner space is micro-positive pressure.
[0036] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.
Claims
1. A micro-positive pressure refrigerator that can reduce a fan, comprising a rack (1); characterized in that: The right end of the rack (1) is provided with a shell (2) through screwing, the upper right end of the shell (2) is fixedly connected with a first fixed block (3), the right end of the first fixed block (3) is provided with a first fixed assembly (4), the lower right end of the shell (2) is provided with a second fixed assembly (5), the middle right end of the shell (2) is provided with an air passage inlet (6), the upper right end of the shell (2) is provided with an air passage outlet (7), the bottom end of the inside of the rack (1) is provided with a condensing fan (8) and a compressor (14), the middle of the inner wall of the rack (1) is provided with a condenser (9), the air suction end of the condensing fan (8) is away from the shell (2), the middle right end of the inner wall of the rack (1) is provided with an evaporator (10), the upper right end of the condenser (9) is provided with a slightly positive pressure filter (11), the upper end of the inner wall of the rack (1) is provided with an evaporating fan (12) and an air heater (13), the evaporator (10) is screwed on the inside circulating air inlet opening of the rack (1), the condenser (9) is screwed on the outside circulating air outlet opening of the rack (1), and the slightly positive pressure filter (11) is embedded on the inside and outside circulating separation plate of the rack (1).
2. The micro-positive pressure refrigerator with reduced fan of claim 1, wherein: The evaporating fan (12) is circular in shape, the condensing fan (8) is circular in shape, the slightly positive pressure filter (11) is square in shape, the air outlet end of the condensing fan (8) is communicated with the slightly positive pressure inlet of the slightly positive pressure filter (11), and the air outlet end of the condensing fan (8) is also communicated with the air passage outlet (7).
3. The micro-positive pressure refrigerator with reduced fan of claim 1, wherein: The first fixed assembly (4) comprises a second fixed block (401), a first threaded column (402), a fixed frame (403), a second threaded column (404), a fixed plate (405), a bolt (406) and a threaded sleeve block (407); the right end of the first fixed block (3) is fixedly connected with the second fixed block (401), the front and rear ends of the second fixed block (401) are both screwed with the first threaded column (402), one end of the first threaded column (402) away from the center of the second fixed block (401) is fixedly connected with the fixed frame (403), the left and right ends of the fixed frame (403) are both in frame shape, the inner wall of the fixed frame (403) is slidably provided with the second threaded column (404), the right end of the second threaded column (404) is fixedly connected with the fixed plate (405), the left end of the fixed plate (405) is screwed with the bolt (406) at the four corner edges, and the outer wall of the second threaded column (404) is screwed with the threaded sleeve block (407).
4. The micro-positive pressure refrigerator with reduced fan of claim 2, wherein: The rack (1) is located between the two fixed frames (403), and a gap is formed between the end of the fixed frame (403) and the rack (1) close to each other.
5. The micro-positive pressure refrigerator with reduced fan of claim 2, wherein: The fixed frame (403) and the second threaded column (404) are both made of stainless steel, and the upper end of the threaded sleeve block (407) is flush with the upper end of the fixed frame (403).
6. The reduced-fan micro-positive pressure refrigerator of claim 1, wherein: The second fixing assembly (5) comprises a third fixing block (501), a third threaded column (502), a mounting block (503) and a fourth threaded column (504); the lower part of the right end of the shell (2) is fixedly connected with the third fixing block (501), the front and rear ends of the third fixing block (501) are both threadedly connected with the third threaded column (502), the end, away from the third fixing block (501), of the third threaded column (502) is fixedly connected with the mounting block (503), and the left and right ends of the mounting block (503) are both threadedly connected with the fourth threaded column (504) in a penetrating mode.
7. The micro-positive pressure refrigerator with reduced fan of claim 5, wherein: The rack (1) is located between the two mounting blocks (503), and a gap is formed between the end, at which the mounting block (503) and the rack (1) are close to each other.