A constant temperature workstation

Abstract

The invention discloses a constant temperature workstation, comprising a studio and an air circulation system, wherein the studio has a workbench, the air circulation system comprises a return air port, an air inlet, an air internal circulation passage connected to the return air port, and an air external exhaust passage connected to the air inlet, the return air port and the air inlet are arranged on the workbench, and further comprises a constant temperature module for performing heat exchange with the air in the air internal circulation passage, the air after heat exchange enters the return air port under the action of the air circulation system, and circulates through the studio along the air internal circulation passage, so that the studio has a constant temperature environment, the outside air enters the air inlet under the action of the air circulation system, and is discharged along the air external exhaust passage, a wind barrier is formed in front of the studio, and a clean environment is provided for the studio. The workstation also provides a clean and constant temperature experimental environment, has low cost, and is conducive to improving the accuracy of experimental data and operating comfort.

Description

Technical Field

[0001] The present invention relates to the technical field of workstations, and in particular to a constant temperature workstation. Background Art

[0002] In industries and fields such as medical care, disease prevention and control, food hygiene, biopharmaceuticals, and environmental monitoring, various experimental tests are involved, which require a constant temperature and clean laboratory environment, and need to protect operators and experimental samples, and avoid cross contamination between experimental samples.

[0003] In order to meet the required experimental environment requirements, it is necessary to equip an environmental laboratory and use a biological safety cabinet for experimental operations. The temperature range of the environmental laboratory is 5-37°C, and different experimental samples require different environmental temperatures. For example, drugs and blood products need to be tested at 5°C to minimize damage to the samples; animal and plant cells are most active at 37°C.

[0004] The solution of using biological safety cabinets in environmental laboratories has the following disadvantages:

[0005] (1) The overall cost is too high. The construction of an environmental laboratory requires a lot of manpower, material resources and space. In actual use, in order to ensure the environmental requirements in the laboratory, the overall energy consumption is also very high. In addition, the investment and use of biological safety cabinets make the overall cost too high.

[0006] (2) The operating comfort and experimental data accuracy are poor. In a relatively low temperature operating environment of 5-18℃, if the outdoor temperature is 30℃, the temperature difference between indoor and outdoor is large. If the operator does not take physical protection, it may cause physical harm to the operator, and the large temperature difference will affect the accuracy of the experimental data.

[0007] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0008] In view of this, the present invention proposes a constant temperature workstation, which provides a clean and constant temperature experimental environment while also being able to improve operating comfort and experimental data accuracy at a low cost.

[0009] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0010] A constant temperature workstation comprises a studio having a workbench, and also comprises: an air circulation system, which comprises: a return air port, which is arranged on the workbench, for the air in the studio to perform return air circulation; an air inlet, which is arranged on the workbench, for the outside air to enter the workstation; an internal air circulation passage, which is formed in the workstation and connected to the return air port; an air exhaust passage, which is formed in the workstation and connected to the air inlet; a constant temperature module, which is used to exchange heat with the air in the internal air circulation passage; wherein, the air after heat exchange enters the return air port under the action of the air circulation system, and circulates through the studio along the internal air circulation passage; the outside air enters the air inlet under the action of the air circulation system, and is discharged along the air exhaust passage.

[0011] Furthermore, the workstation includes a cabinet, the working room is surrounded by side walls of the cabinet, the workbench is located below the working room, and the air internal circulation passage and the air external exhaust passage are both formed inside the cabinet.

[0012] Furthermore, a temperature insulation layer is provided between the air exhaust passage and the air internal circulation passage.

[0013] Furthermore, the return air inlet includes a first return air inlet and a second return air inlet, the first return air inlet is located at the front side of the workbench, and the second return air inlet is located at the rear side of the workbench.

[0014] Furthermore, a first inclined portion and a second inclined portion are provided on the side of the workbench close to the external environment, a certain angle is formed between the first inclined portion and the second inclined portion, the first inclined portion is close to the working room side, the second inclined portion is close to the external environment side, and the intersection of the first inclined portion and the second inclined portion is higher than the workbench; the first return air outlet is provided on the first inclined portion, and the air inlet is provided on the second inclined portion.

[0015] Furthermore, a transparent window is provided on the side of the studio close to the external environment; the intersection of the first inclined portion and the second inclined portion is directly opposite to the lower edge of the transparent window.

[0016] Furthermore, the constant temperature module is a semiconductor chip, one side of the semiconductor chip is located in the air internal circulation passage, and the other side of the semiconductor chip is located in the air external exhaust passage.

[0017] Furthermore, an air supply bellows is provided in the air internal circulation passage, the air supply bellows is located above the working room, an air supply fan is provided on the air supply bellows, and an air supply filter is provided below the air supply bellows; an exhaust fan and an exhaust filter are provided in the air exhaust passage.

[0018] Furthermore, a flow equalizing plate is provided between the air supply filter and the working chamber.

[0019] Furthermore, one side of the air supply bellows is hinged to the cabinet, and the other side is detachably fixedly connected to the flow equalizing plate. One side of the air supply filter is pressed between the air supply bellows and the cabinet, and the other side is pressed between the air supply bellows and the flow equalizing plate.

[0020] Furthermore, a wind speed sensor and a temperature sensor are provided in the working chamber.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are:

[0022] The air in the air circulation passage is kept at a constant temperature by the constant temperature module, and circulates through the studio under the action of the air circulation system, thereby making the studio have a constant temperature environment. At the same time, the outside air enters the air exhaust channel from the air inlet in front of the studio under the action of the air circulation system and is then discharged. A wind barrier is formed in front of the studio to prevent the outside environment from polluting the interior of the studio, providing a clean environment for the studio. The constant temperature workstation can provide a clean and constant temperature experimental environment at the same time, without the need to configure an environmental laboratory and a biosafety cabinet, and has low cost. The clean and constant temperature studio is conducive to improving the accuracy of experimental data. In addition, during operation, the operator only has his hands in the studio, and other parts of the body are outside the studio. The operator will not feel uncomfortable due to the large temperature difference, thereby improving the operating comfort.

[0023] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a cross-sectional schematic diagram of an embodiment of a constant temperature workstation of the present invention;

[0026] Figure 2 This is a schematic diagram of air flow in a constant temperature workstation embodiment of the present invention;

[0027] Figure 3 for Figure 1 Enlarged view of part A in the middle;

[0028] Figure 4 for Figure 1 Enlarged view of middle part B;

[0029] Figure 5 for Figure 1 Enlarged view of middle C;

[0030] Figure 6 It is a structural schematic diagram of a constant temperature module of a constant temperature workstation embodiment of the present invention.

[0031] Among them, 01-workroom, 02-workbench, 03-cabinet, 031-outer wall, 032-inner wall, 033-front wall, 034-middle partition, 04-air internal circulation passage, 05-air external exhaust passage, 06-return air outlet, 061-first return air outlet, 062-second return air outlet, 07-air inlet, 08-exhaust outlet, 09-constant temperature module, 091-semiconductor chip, 092-cooling / heating end, 093-heat dissipation end, 10 - insulation layer, 11- air supply fan, 12- exhaust fan, 13- air supply filter, 14- exhaust filter, 15- flow equalizing plate, 151- ventilation hole, 16- first connecting plate, 17- second connecting plate, 18- screw, 19- first inclined portion, 20- second inclined portion, 21- transparent window, 22- air supply bellows, 221- front side wall, 222- rear side wall, 223- upper wall, 23- temperature sensor, 24- wind speed sensor;

[0032] α is the angle between the first inclined portion and the vertical plane, β is the angle between the second inclined portion and the vertical plane. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that in the description of the present invention, the terms "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] The present invention discloses a constant temperature workstation, referring to Figure 1 and Figure 2 , Figure 1 and Figure 2 The arrows in the figure indicate the direction of air flow. The workstation includes a studio 01 and an air circulation system. The studio 01 has a workbench 02. The air circulation system includes a return air port 06, an air inlet 07, an air internal circulation passage 04, an air external exhaust passage 05, and a constant temperature module 09. The return air port 06 and the air inlet 07 are both arranged on the workbench 02. The return air port 06 is used for the return air circulation in the studio 01, and the air inlet 07 is used for the outside air to enter the workstation. The return air port 06 is connected to the air internal circulation passage 04, and the air inlet 07 is connected to the air external exhaust passage 05. The constant temperature module 09 is used to exchange heat with the air in the air internal circulation passage 04, so as to increase or decrease the temperature of the air in the air internal circulation passage 04 and thus maintain a constant temperature. The air after heat exchange enters the return air port 06 under the action of the air circulation system, and circulates through the studio 01 along the air internal circulation passage 04, so that the studio 01 has a constant temperature environment. The outside air enters the air inlet 07 under the action of the air circulation system, and is discharged after passing through the inside of the workstation along the air exhaust passage 05. A wind barrier is formed in front of the studio 01 to prevent the external environment from polluting the inside of the studio 01, providing a clean environment for the studio 01.

[0036] The constant temperature workstation can provide a clean and constant temperature experimental environment at the same time, without the need for an environmental laboratory and a biological safety cabinet, and is low in cost. The clean and constant temperature studio 01 is conducive to improving the accuracy of experimental data. In addition, during operation, the operator's only hands are located in studio 01, and other parts of the body are located outside studio 01. The operator will not feel uncomfortable due to the large temperature difference, thereby improving the operating comfort.

[0037] Specifically, refer to Figure 1 The workstation includes a cabinet 03, which includes an outer wall 031, an inner wall 032 and a front wall 033. The outer wall 031, the inner wall 032 and the front wall 033 form an inner cavity of the cabinet (not shown). A middle partition 034 is provided inside the inner cavity of the cabinet. The middle partition 034 divides the inner cavity of the cabinet into two independent parts, one part forming an air exhaust passage 05, and the other part forming an air internal circulation passage 04.

[0038] The studio 01 is surrounded by an inner wall 032 , and the workbench 02 is close to the inner wall 032 located below and horizontally arranged. The workbench 02 can be a separately processed component, or the inner wall 032 located below can be used as the workbench 02 . In this embodiment, the inner wall 032 located below is directly used as the workbench 02 .

[0039] An exhaust port 08 is provided on the outer wall 031 at the top, and the exhaust port 08 is connected to the air exhaust passage 05. The outside air flowing in from the air inlet 07 first flows into the air exhaust passage 05, and then is discharged from the exhaust port 08 along the air exhaust passage 05. The air inlet 07 is preferably provided at the front side of the workbench 02. When the outside air enters the air inlet 07 under the action of the air circulation system, a wind barrier will be formed at the front side of the workbench 02. The wind barrier isolates the interior of the studio 01 from the outside environment, thereby preventing the outside environment from polluting the clean and constant temperature studio 01 and maintaining the stability of the internal environment of the studio 01.

[0040] An exhaust fan 12 is provided in the air exhaust passage 05 , and the exhaust fan 12 is close to the exhaust port 08 . The exhaust fan 12 provides power for the outside air to enter the air exhaust passage 05 and to be discharged outward along the air exhaust passage 05 .

[0041] An exhaust filter 14 is provided at the exhaust port 08, and the air in the air exhaust passage 05 is filtered by the exhaust filter 14 before being discharged to the outside to avoid pollution to the external environment.

[0042] Reference Figures 1 to 4 The return air inlet 06 includes a first return air inlet 061 and a second return air inlet 062. The first return air inlet 061 is arranged on the front side of the workbench 02 (close to the external environment side), and the second return air inlet 061 is arranged on the rear side of the workbench 02 (away from the external environment side). The air after heat exchange descending from the top of the studio 01 will be divided into two paths when reaching the workbench 02. One path enters the air internal circulation passage 04 through the first return air inlet 061, and the other path enters the air internal circulation passage 04 through the second return air inlet 062. The two return air paths merge in the air internal circulation passage 04 and then flow upward along the air internal circulation passage 04 to the top of the studio 01. The air exchanges heat with the constant temperature module 09 in the air internal circulation passage 04 to keep the temperature of the air constant, and then recirculates and descends into the studio 01, thereby realizing the circulation of air and constant temperature in the studio 01, providing a constant temperature and stable environment for experimental operations.

[0043] Reference Figure 3The first inclined portion 19 and the second inclined portion 20 are provided on the side of the workbench 02 close to the external environment. There is a certain angle between the first inclined portion 19 and the second inclined portion 20. The first inclined portion 19 is close to the side of the studio 01, and the second inclined portion 20 is close to the side of the external environment. The intersection of the first inclined portion 19 and the second inclined portion 20 is higher than the workbench 02. The first return air port 061 is provided on the first inclined portion 19, and the air inlet 07 is provided on the second inclined portion 20. The first inclined portion 19 and the second inclined portion 20 form a convex structure on the front side of the workbench 02. On the one hand, it is convenient for the introduction and flow of air and reduces wind loss. On the other hand, according to the characteristics of air flow, the air always flows along the easiest path, so that the outside air can easily flow into the air exhaust passage 05 through the air inlet 07, and the air in the studio 01 can easily enter the air internal circulation passage 04 through the return air port 06. The air flows in the studio 01 and outside the studio 01 do not interfere with each other, thereby improving the environmental stability in the studio 01.

[0044] A transparent window 21 is provided on the side of the studio 01 close to the external environment. There is a certain gap between the lower edge of the transparent window 21 and the workbench 02, so that the operator can easily reach into the studio 01 through the gap to operate. The transparent window 21 protects the environment in the studio 01 to a certain extent, and also facilitates the operator to observe the operation in the studio 01 through the transparent window 21.

[0045] The intersection of the first inclined portion 19 and the second inclined portion 20 is preferably opposite to the lower edge of the transparent window 21, forming a separation between the inner and outer spaces of the studio 01, further ensuring that the airflow inside and outside the studio 01 does not interfere with each other.

[0046] In this embodiment, the angle between the first inclined portion 19 and the vertical plane is denoted as α, which ranges from 30-60°, and is 45° in this embodiment; the angle between the second inclined portion 20 and the vertical plane is denoted as β, which ranges from 40-70°, and is 55° in this embodiment.

[0047] In this embodiment, there are multiple first air return ports 061, which are arranged at intervals, and there are multiple air inlet ports 07, which are arranged at intervals. The second air return port 062 is arranged at the bottom of the inner wall 032, near the workbench 02, as shown in FIG. Figure 3 The second air return port 062 is arranged in a horizontal direction, so that the air in the working room 01 can enter the second air return port 062 under the suction force of the air supply fan 11, thereby facilitating air return and reducing wind loss.

[0048] Reference Figure 1 and Figure 2An air supply box 22 is provided in the air internal circulation passage 04, and the air supply box 22 is located above the studio 01. An air supply fan 11 is provided on the air supply box 22, and an air supply filter 13 is provided below the air supply box 22. The air in the studio 01 enters the air internal circulation passage 04 through the return air port 06 under the suction of the air supply fan 11, enters the air supply box 22 along the air internal circulation passage 04, and then flows into the studio 01 through the air supply filter 13 under the action of the air supply fan 11, forming an air circulation loop, so that the air can circulate through the studio 01. The air supply filter 13 filters the air flowing into the studio 01 to ensure a clean environment in the studio 01.

[0049] It should be noted here that the side wall of the air supply bellows 22 can be understood as the inner wall 032 of the cabinet 03 mentioned above, that is, the side wall of the air supply bellows 22 is a part of the inner wall 032 of the cabinet.

[0050] A flow equalizing plate 15 is provided between the air supply filter 13 and the studio 01, and a plurality of ventilation holes 151 are arranged at even intervals on the flow equalizing plate 15. The plurality of ventilation holes 151 have a flow equalizing effect on the descending airflow, so that the descending airflow can flow evenly to the interior of the studio 01, making the airflow inside the studio 01 more stable, thereby providing a more stable experimental environment.

[0051] Reference Figure 5 The air supply box 22 includes a front side wall 221, a rear side wall 222, and an upper wall 223. The air supply fan 11 is arranged on the upper wall 223. The rear side wall 222 is hinged to the middle partition 034 in the cabinet through a first connecting plate 16. The front side wall 221 is detachably fixedly connected to the flow equalizing plate 15 through a second connecting plate 17. The rear side of the air supply filter 13 is pressed between the air supply box 22 and the middle partition 034, and the front side of the air supply filter 13 is pressed between the air supply box 22 and the flow equalizing plate 15.

[0052] When installing or replacing the air supply filter 13, release the fixed connection between the front side wall 221 and the flow equalizing plate 15, lift the air supply bellows 22 upwards, rotate the first connecting plate 16 and the middle partition plate 034 at the hinge position, install the air supply filter 13, and after the air supply filter 13 is in place, lower the air supply bellows 22 downwards, and then fix the front side wall 221 and the flow equalizing plate 15 together through the second connecting plate 17. The installation process is simple and easy to operate.

[0053] The front side wall 221 and the second connecting plate 17 , and the second connecting plate 17 and the current equalizing plate 15 are fastened by screws 18 to achieve a detachable fixed connection.

[0054] Based on any of the above embodiments, a thermal insulation layer 10 is provided between the air discharge passage 05 and the air internal circulation passage 04 to prevent heat exchange between the air discharge passage 05 and the air in the air internal circulation passage 04, thereby making the air temperature in the air internal circulation passage 04 more stable and reducing energy consumption. In this embodiment, the thermal insulation layer 10 is fixedly arranged close to the middle partition plate 034.

[0055] Based on any of the above embodiments, Figure 1 and Figure 6 The constant temperature module 9 adopts a semiconductor chip 091, which is directly fixed to the middle partition 034 by screws 18. The semiconductor technology is used to heat or cool the air, with a simple structure and high efficiency. The cooling / heating end 092 of the semiconductor chip 091 is located in the air internal circulation passage 04, and the heat dissipation end 093 of the semiconductor chip 091 is located in the air external exhaust passage 05. The cold / heat generated by the cooling / heating end 092 directly acts on the air in the air internal circulation passage 04 to adjust the temperature of the air, and adjusts the temperature in the studio 01 by circulating the air through the studio 01, so that the temperature in the studio 01 is maintained stable. The heat / coldness of the heat dissipation end 093 is directly released into the air external exhaust passage 05 and discharged with the air through the exhaust port 08.

[0056] On the basis of any of the above embodiments, a wind speed sensor 24 and a temperature sensor 23 are provided in the studio 01 . The wind speed sensor 24 is used to measure the air flow velocity in the studio 01 , and the temperature sensor 23 is used to measure the temperature in the studio 01 .

[0057] The control system of the workstation adjusts the rotation speed of the supply fan 11 and the exhaust fan 12 according to the air flow speed feedback from the wind speed sensor 24, so that the air flow inside and outside the studio 01 is balanced and does not interfere with each other, thereby improving the stability of the system. At the same time, the air flow speed in the studio 01 is monitored in real time to maintain it stable to avoid affecting the operating items.

[0058] The control system controls the start and stop of the semiconductor chip 091 according to the temperature information fed back by the temperature sensor 23 , so that the temperature of the air circulating through the working room 01 is maintained stable, so as to achieve a constant temperature environment in the working room 01 .

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A constant temperature workstation, comprising a studio, wherein the studio has a workbench, characterized in that: Also includes: An air circulation system comprising: an air return port, arranged on the workbench, for returning air in the workroom for circulation, the air return port comprising a first air return port and a second air return port, the first air return port being located at the front side of the workbench, and the second air return port being located at the rear side of the workbench; An air inlet, provided on the workbench, for allowing outside air to enter the workstation; An air internal circulation passage is formed in the workstation and communicated with the return air port; an air exhaust passage formed in the workstation and connected to the air inlet; A constant temperature module, used for exchanging heat with the air in the air internal circulation passage; in, The air after heat exchange enters the return air port under the action of the air circulation system, and circulates through the working room along the air internal circulation passage; The outside air enters the air inlet under the action of the air circulation system and is discharged along the air exhaust passage, and a wind barrier is formed in front of the working room; The workbench is provided with a first inclined portion and a second inclined portion on a side close to the external environment, the first inclined portion and the second inclined portion have a certain angle, the first inclined portion is close to the working room side, the second inclined portion is close to the external environment side, and the intersection of the first inclined portion and the second inclined portion is higher than the workbench; The first air return port is arranged on the first inclined portion, and the air inlet is arranged on the second inclined portion.

2. The constant temperature workstation according to claim 1, characterized in that: The workstation comprises a cabinet, the working room is surrounded by side walls of the cabinet, the workbench is located below the working room, and the air internal circulation passage and the air external exhaust passage are both formed inside the cabinet.

3. The constant temperature workstation according to claim 2, characterized in that: A temperature insulation layer is provided between the air exhaust passage and the air internal circulation passage.

4. The constant temperature workstation according to claim 1, characterized in that: The studio is provided with a transparent window on the side close to the external environment; The intersection of the first inclined portion and the second inclined portion is directly opposite to the lower edge of the transparent window.

5. The constant temperature workstation according to claim 2, characterized in that: The constant temperature module is a semiconductor chip, one side of which is located in the air internal circulation passage, and the other side of which is located in the air external exhaust passage.

6. The constant temperature workstation according to claim 2, characterized in that: An air supply bellows is provided in the air internal circulation passage, the air supply bellows is located above the working room, an air supply fan is provided on the air supply bellows, and an air supply filter is provided below the air supply bellows; An exhaust fan and an exhaust filter are arranged in the air exhaust passage.

7. The constant temperature workstation according to claim 6, characterized in that: A flow equalizing plate is provided between the air supply filter and the working chamber.

8. The constant temperature workstation according to claim 7, characterized in that: One side of the air supply bellows is hinged to the cabinet, and the other side is detachably fixedly connected to the flow equalizing plate. One side of the air supply filter is pressed between the air supply bellows and the cabinet, and the other side is pressed between the air supply bellows and the flow equalizing plate.

9. The constant temperature workstation according to any one of claims 1 to 8, characterized in that: A wind speed sensor and a temperature sensor are arranged in the working room.

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