Air-cooled sterile pure steam sampling device and sampling method

Abstract

The present invention relates to an air-cooled sterile pure steam sampling device and a sampling method. Pure steam enters through an air inlet pipe and performs air-cooled heat exchange when flowing through at least two heat exchangers in sequence, so that the pure steam condenses inside the heat exchanger to form condensed water. The condensed water is discharged outward through a water outlet pipe, and the condensed water can be sampled and tested. On the one hand, since there are at least two heat exchangers, the heat exchange effect can be guaranteed. Compared with the traditional structure, a water storage tank or a semiconductor refrigerator in the traditional technology is not required, which can reduce the product volume to a certain extent; on the other hand, since the height of the setting position of all heat exchangers tends to decrease in sequence according to the flow direction of the air flow, the condensed water generated in the heat exchanger can flow from high to low in sequence according to the air flow direction and be discharged to the condensed water supply end of the water outlet pipe. The generated condensed water will not gather inside the heat exchanger, that is, it can avoid the condensed water remaining inside the heat exchanger from breeding bacteria, so that the cleanliness can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of pure steam sampling, and in particular to an air-cooled sterile pure steam sampling device and a sampling method. Background Art

[0002] In the biopharmaceutical industry, microbial indicators are important quality indicators in its production, so various disinfection and sterilization methods are considered in the design of each system that comes into contact with the product, among which pure steam sterilization is indispensable to achieve the control of microorganisms and endotoxins. Whether the pure steam preparation system can produce qualified pure steam needs to be achieved through detection and sampling. Because it is in a gaseous state, the sample must be converted into a liquid state to easily measure the indicators, so the pure steam sampling device appears.

[0003] In traditional technology, steam sampling is usually done by low-temperature water cooling, using cooling water in a water tank to cool down. This method requires regular replacement of cooling water in the water tank to ensure sampling efficiency, which is not easy to operate in actual use, and the large volume of the water tank leads to a large volume of the pure steam sampling device. In addition, there is also a cooling method that combines an air-cooled refrigerator with a semiconductor refrigerator. This method is large in size, and the semiconductor refrigerator needs to be combined with an additional fan for heat dissipation, which has a high overall cost and a large volume. Summary of the invention

[0004] Based on this, it is necessary to overcome the defects of the prior art and provide an air-cooled sterile pure steam sampling device and sampling method, which can ensure the sampling efficiency of pure steam while ensuring cleanliness and having a small product volume.

[0005] The technical scheme is as follows: an air-cooled sterile pure steam sampling device, the air-cooled sterile pure steam sampling device comprising:

[0006] At least two heat exchangers, all of which are arranged in series, and the height of all of the heat exchangers is arranged in a decreasing trend according to the airflow direction. The heat exchanger located at the first position in the airflow direction is recorded as the first heat exchanger, and the heat exchanger located at the last position is recorded as the last heat exchanger;

[0007] An air inlet pipe and a water outlet pipe, wherein one end of the air inlet pipe is connected to a pure steam sampling point, and the other end of the air inlet pipe is connected to an air inlet end of the first heat exchanger, and one end of the water outlet pipe is connected to a last heat exchanger, and the other end of the water outlet pipe is a condensed water supply end;

[0008] A fan is used to blow cold air to all the heat exchangers to dissipate heat from the heat exchangers, so as to cool the pure steam inside the heat exchangers to form condensed water.

[0009] When the above-mentioned air-cooled sterile pure steam sampling device is working, pure steam enters through the air inlet pipe, and when it flows through at least two heat exchangers in sequence, it is air-cooled and heat-exchanged by the cold wind of the fan, so that the pure steam condenses inside the heat exchanger to form condensed water. The condensed water is discharged outward through the outlet pipe, and the condensed water can be sampled and tested. In this way, on the one hand, since there are at least two heat exchangers, the heat exchange effect can be guaranteed, and the working efficiency of converting pure steam into condensed water can be guaranteed. At the same time, compared with the traditional structure, since it is a combination of at least two heat exchangers and fans, it does not require a water storage tank or a semiconductor refrigerator as in the traditional technology, which can reduce the product volume to a certain extent; on the other hand, since the height of the setting position of all heat exchangers tends to decrease in sequence according to the direction of air flow, the condensed water generated in the heat exchanger can flow from high to low in sequence according to the direction of air flow and be discharged to the condensed water supply end of the outlet pipe, and the generated condensed water will not gather inside the heat exchanger, that is, it can avoid the condensed water remaining inside the heat exchanger from breeding bacteria, so that the cleanliness can be guaranteed.

[0010] In one embodiment, the air-cooled sterile pure steam sampling device also includes a box; all the heat exchangers are arranged inside the box, and the height positions of all the heat exchangers relative to the bottom plate of the box tend to decrease successively according to the air flow direction; the air inlet pipe passes through the wall of the box and extends to the outside of the box, and the water outlet pipe passes through the wall of the box and extends to the outside of the box.

[0011] In one embodiment, the heat exchanger is a finned heat exchanger; the heat exchanger includes a heat exchange tube and a plurality of heat exchange fins arranged on the heat exchange tube at intervals along the air flow direction in the heat exchange tube; the heat exchange tubes of adjacent heat exchangers are connected by connecting tubes.

[0012] In one embodiment, the connecting tube is a U-shaped tube, a circular arc tube or an elliptical arc tube.

[0013] In one of the embodiments, the heat exchange tubes of the heat exchanger are arranged parallel to the bottom plate of the box body; or, the distance between the heat exchange tubes of the heat exchanger and the bottom plate of the box body gradually decreases along the flow direction of the airflow.

[0014] In one of the embodiments, for the heat exchange tubes of any two adjacent heat exchangers, a line connecting the center of an air outlet end of the heat exchange tube of one of the heat exchangers and the center of an air inlet end of the heat exchange tube of the other heat exchanger is a reference line, and an inclination angle of the reference line relative to the bottom plate surface of the box body is a, and a is 5° to 85°.

[0015] In one of the embodiments, the projections of all the connecting pipes on the side panels of the box along the length direction of the heat exchange pipes of the heat exchanger are in a W shape.

[0016] In one embodiment, the air-cooled sterile pure steam sampling device also includes a power supply arranged inside the box, and the power supply is connected to the fan; the air-cooled sterile pure steam sampling device also includes insulation cotton arranged inside the box, and the insulation cotton is arranged on the inner wall of the box.

[0017] In one of the embodiments, the air-cooled sterile pure steam sampling device also includes a handle, which is arranged on the top wall of the box; the air-cooled sterile pure steam sampling device also includes at least one universal wheel, which is arranged on the bottom wall of the box.

[0018] In one embodiment, the air-cooled sterile pure steam sampling device further includes a first switch and a second switch; the first switch is arranged on the air inlet pipe, and the second switch is arranged on the water outlet pipe.

[0019] A method for sampling air-cooled sterile pure steam, the air-cooled sterile pure steam sampling device comprising the following steps: connecting an air inlet pipe to a pure steam sampling point, turning on a fan, and connecting a condensate supply end to a detection device.

[0020] In the above-mentioned air-cooled sterile pure steam sampling method, pure steam enters through the air inlet pipe, and when it flows through at least two heat exchangers in sequence, it is air-cooled and heat-exchanged by the cold air of the fan, so that the pure steam condenses inside the heat exchanger to form condensed water. The condensed water is discharged outward through the outlet pipe, and the condensed water can be sampled and tested. In this way, on the one hand, since there are at least two heat exchangers, the heat exchange effect can be guaranteed, and the working efficiency of converting pure steam into condensed water can be guaranteed. At the same time, compared with the traditional structure, since it is a combination of at least two heat exchangers and fans, it does not require a water storage tank or semiconductor refrigerator as in the traditional technology, which can reduce the product volume to a certain extent; on the other hand, since the height of the setting position of all heat exchangers tends to decrease in sequence according to the direction of air flow, the condensed water generated in the heat exchanger can flow from high to low in sequence according to the direction of air flow and be discharged to the condensed water supply end of the outlet pipe, and the generated condensed water will not gather inside the heat exchanger, that is, it can avoid the condensed water remaining inside the heat exchanger from breeding bacteria, so that the cleanliness can be guaranteed.

[0021] In one embodiment, the air-cooled sterile pure steam sampling method comprises the following steps:

[0022] Before connecting the air inlet pipe to the pure steam sampling point, close the second switch provided on the water outlet pipe, and then open the first switch provided on the air inlet pipe;

[0023] Before the condensed water supply end discharges the condensed water to the detection device, the first switch provided on the air inlet pipe is closed, and then the second switch provided on the water outlet pipe is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a structural schematic diagram of an air-cooled sterile pure steam sampling device according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic structural diagram of an air-cooled sterile pure steam sampling device provided with a box body according to an embodiment of the present invention;

[0028] Figure 3 for Figure 2 A schematic diagram of the structure from one of the perspectives decomposed from one of the side panels;

[0029] Figure 4 for Figure 2 A schematic diagram of the structure from another perspective, showing one of the side panels being decomposed.

[0030] 10. Heat exchanger; 11. First heat exchanger; 12. Last heat exchanger; 13. Heat exchange tube; 14. Heat exchange fin; 20. Air inlet pipe; 30. Water outlet pipe; 40. Fan; 50. Hose; 60. Box; 61. Side panel; 611. Air inlet; 612. Air outlet; 70. Connecting pipe; 80. Power supply; 91. Handle; 92. First switch; 93. Second switch; 94. First adjustment knob; 95. Second adjustment knob. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] See also Figure 1 , Figure 1The schematic diagram of the structure of an air-cooled sterile pure steam sampling device according to an embodiment of the present invention is shown. An air-cooled sterile pure steam sampling device according to an embodiment of the present invention includes: at least two heat exchangers 10, an air inlet pipe 20, a water outlet pipe 30 and a fan 40. All heat exchangers 10 are arranged in series in sequence, and the height of the arrangement positions of all heat exchangers 10 is successively reduced according to the flow direction of the air flow. All heat exchangers 10 located in the first position in the flow direction of the air flow are recorded as the first heat exchanger 11, and those located in the last position are recorded as the last heat exchanger 12. One end of the air inlet pipe 20 is used to communicate with the pure steam sampling point (not shown in the figure), and the other end of the air inlet pipe 20 is used to communicate with the air inlet end of the first heat exchanger 11. Specifically, in this embodiment, one end of the air inlet pipe 20 is connected to a hose 50, which can be easily connected to the pure steam sampling point through the hose 50. One end of the water outlet pipe 30 is used to communicate with the last heat exchanger 12, and the other end of the water outlet pipe 30 is a condensed water supply end. The fan 40 is used to blow cold air toward all the heat exchangers 10 to dissipate heat from the heat exchangers 10 so as to cool the pure steam inside the heat exchangers 10 to form condensed water.

[0033] When the above-mentioned air-cooled sterile pure steam sampling device is working, pure steam enters through the air inlet pipe 20, and is cooled and heat-exchanged by the cold air of the fan 40 when it flows through at least two heat exchangers 10 in sequence, so that the pure steam condenses inside the heat exchanger 10 to form condensed water. The condensed water is discharged to the outside through the water outlet pipe 30, and the condensed water can be sampled and tested. In this way, on the one hand, since there are at least two heat exchangers 10, the heat exchange effect can be guaranteed, and the working efficiency of converting pure steam into condensed water can be guaranteed. At the same time, compared with the traditional structure, since a combination of at least two heat exchangers 10 and a fan 40 is set, there is no need for a water storage tank or a semiconductor refrigerator as in the traditional technology, which can reduce the product volume to a certain extent; on the other hand, since the height of the setting positions of all heat exchangers 10 tends to decrease successively according to the flow direction of the airflow, the condensed water generated in the heat exchanger 10 can flow from high to low in the direction of the airflow and be discharged to the condensed water supply end of the water outlet pipe 30. The generated condensed water will not gather inside the heat exchanger 10, that is, it can avoid the condensed water remaining in the heat exchanger 10 from breeding bacteria, thus ensuring the cleanliness.

[0034] See also Figures 1 to 3 , Figure 2 The structure diagram of the air-cooled sterile pure steam sampling device according to one embodiment of the present invention is provided with a box body 60. Figure 3 Shows Figure 2A schematic structural diagram of one of the side panels 61 of the air-cooled sterile pure steam sampling device is shown in FIG. 6 . In one embodiment, the air-cooled sterile pure steam sampling device further includes a box body 60. All heat exchangers 10 are arranged inside the box body 60, and the height positions of all heat exchangers 10 relative to the bottom plate of the box body 60 are in a decreasing trend in accordance with the air flow direction. In this way, the box body 60 protects all the heat exchangers 10 inside it, and it is also convenient to carry and carry the air-cooled sterile pure steam sampling device.

[0035] In addition, specifically, the air inlet pipe 20 penetrates the wall of the box body 60 and extends to the outside of the box body 60 to be connected to the pure steam sampling point, and the water outlet pipe 30 penetrates the wall of the box body 60 and extends to the outside of the box body 60 to be connected to the detection device.

[0036] See also Figure 2 and Figure 3 In addition, the fan 40 is disposed on one of the side panels 61 of the box 60, and the side panel 61 is provided with an air inlet 611 connected to the outside environment. When the fan 40 is working, the cold air from the outside environment is drawn into the box 60 through the air inlet 611. The other side panel 61 of the box 60 that is oppositely disposed is provided with an air outlet 612 connected to the outside environment. When the fan 40 is working, the cold air will pass through the heat exchanger 10 and then be discharged to the outside of the box 60 through the air outlet 612 after heat exchange with the heat exchanger 10.

[0037] In one embodiment, the heat exchanger 10 includes, but is not limited to, a finned heat exchanger.

[0038] See also Figures 1 to 3 As a specific example, the heat exchanger 10 includes a heat exchange tube 13 and a plurality of heat exchange fins 14 arranged on the heat exchange tube 13 at intervals along the air flow direction in the heat exchange tube 13. The heat exchange tubes 13 of adjacent heat exchangers 10 are connected by a connecting tube 70. In this way, when the airflow of the fan 40 passes through the plurality of heat exchange fins 14 arranged at intervals on the heat exchange tube 13, the temperature of the heat exchange fins 14 can be reduced well, and the air cooling effect is good, which is conducive to ensuring the heat exchange effect and the working efficiency of converting pure steam into condensed water.

[0039] See also Figures 1 to 3 In one embodiment, the connecting tube 70 includes but is not limited to a U-shaped tube, a circular arc tube, and an elliptical arc tube. In this embodiment, the connecting tube 70 is specifically as follows Figures 1 to 3 In this way, the two ends of the connecting pipe 70 can not only facilitate the connection of the outlet and inlet ends of the heat exchange tubes 13 of the two adjacent heat exchangers 10; in addition, the inner wall of the connecting pipe 70 has a smooth transition, that is, there is no dead angle, which can prevent condensed water from remaining on the inner wall of the connecting pipe 70 and causing bacteria to grow, thereby ensuring cleanliness.

[0040] Specifically, in this embodiment, the heat exchange tube 13 and the connecting tube 70 are both made of sanitary stainless steel pipes. The sanitary structural design and pipeline direction can be used to reduce the contamination of clean pure steam and control microbial indicators such as endotoxin.

[0041] See also Figures 1 to 4 In one embodiment, the heat exchange tube 13 of the heat exchanger 10 is arranged parallel to the bottom plate of the box 60; or, the distance between the heat exchange tube 13 of the heat exchanger 10 and the bottom plate of the box 60 gradually decreases along the airflow direction. In this way, it can be ensured that the condensed water generated in the heat exchanger 10 can flow from high to low in the airflow direction and be discharged to the condensed water supply end of the water outlet pipe 30, and the generated condensed water will not gather inside the heat exchanger 10, that is, it can prevent the condensed water remaining inside the heat exchanger 10 from breeding bacteria, so that the cleanliness can be ensured.

[0042] See also Figure 1 , Figure 3 and Figure 4 In one embodiment, for any two adjacent heat exchangers 10, the line connecting the center of the outlet end of the heat exchange tube 13 of one heat exchanger 10 and the center of the inlet end of the heat exchange tube 13 of the other heat exchanger 10 is a reference line, and the reference line is inclined at an angle a relative to the bottom plate surface of the box body 60, and a is 5° to 85°. In this way, for any two adjacent heat exchangers 10, condensed water can flow along the outlet end of the heat exchange tube 13 of one heat exchanger 10 to the inlet end of the heat exchange tube 13 of the other heat exchanger 10, and then flow backwards, so that condensed water can be prevented from remaining inside the heat exchanger 10.

[0043] As an example, specifically, a is 10° to 40°. More specifically, it is 15° to 25°. In this way, not only can the condensed water flow from the first heat exchanger 11 to the last heat exchanger 12 in sequence under the action of its own gravity, and be completely discharged to the outside through the outlet pipe 30, but the condensed water can be prevented from remaining inside the heat exchanger 10; in addition, each heat exchanger 10 can be arranged more closely inside the box 60, and the arrangement of each heat exchanger 10 is more compact, thereby reducing the volume occupied by the product and facilitating carrying and moving to the pure steam sampling point in other rooms.

[0044] See also Figure 1 , Figure 3 and Figure 4 In one embodiment, the projections of all the connecting pipes 70 along the length direction of the heat exchange pipes 13 of the heat exchanger 10 on the side plate 61 of the box 60 are in a W shape. In this way, the heat exchangers 10 can be arranged more closely inside the box 60, and the arrangement of the heat exchangers 10 is more compact, thereby reducing the volume occupied by the product and facilitating carrying and moving to the pure steam sampling point in other rooms.

[0045] Please refer to Figure 4 As an example, the heat exchanger 10 is specifically Figure 4 The number of heat exchangers 10 shown in FIG. 6 is 6, but of course the number of heat exchangers 10 can be other numbers, that is, more than 6 or less than 6, which is not limited here. Figure 4 In the figure, the height positions of the heat exchange tubes 13 of the six heat exchangers 10 relative to the bottom plate of the box 60 are respectively denoted as h 1 、h 2 、h 3 、h 4 、h 5 With h 6 ,h 1 to h 6 The heights of the two components decrease in sequence.

[0046] See also Figure 1 , Figure 3 and Figure 4 In one embodiment, the air-cooled sterile pure steam sampling device further includes a power supply 80 disposed inside the box 60. The power supply 80 is connected to the fan 40. The power supply 80 includes but is not limited to a lithium battery and a graphene battery. In this way, the air-cooled sterile pure steam sampling device does not need an external power supply, and can be powered by the power supply 80 inside the box 60, which is more convenient to use.

[0047] In one embodiment, the air-cooled sterile pure steam sampling device further includes heat-insulating cotton (not shown in the figure) disposed inside the box 60, and the heat-insulating cotton is disposed on the inner wall of the box 60. In this way, the heat-insulating cotton can prevent the heat exchanger 10 from transferring heat to the box 60, thereby preventing the box 60 from being overheated and causing burns to the staff.

[0048] See also Figures 2 to 4 In one embodiment, the air-cooled sterile pure steam sampling device further includes a handle 91 and / or a pull rod (not shown in the figure). The handle 91 and / or the pull rod are arranged on the top wall of the box body 60. In addition, the air-cooled sterile pure steam sampling device further includes at least one universal wheel (not shown in the figure), which is arranged on the bottom wall of the box body 60. In this way, the air-cooled sterile pure steam sampling device can be easily moved to the required collection room, and the operation is more convenient.

[0049] See also Figures 1 to 3In one embodiment, the air-cooled sterile pure steam sampling device further includes a first switch 92 and a second switch 93. The first switch 92 is arranged on the air inlet pipe 20, and the second switch 93 is arranged on the water outlet pipe 30. When the pure steam is used in this way, when sampling and detection are required at the pure steam sampling point, the air inlet pipe 20 is connected with the pure steam sampling point, the first switch 92 is turned on, and the second switch 93 is turned off at the same time, so that the pure steam at the pure steam sampling point enters the interior of the heat exchanger 10 through the air inlet pipe 20 and flows through each heat exchanger 10 in sequence, and condenses to form condensed water during the process of flowing through each heat exchanger 10; after the pure steam condenses inside the heat exchanger 10 for a preset time, the first switch 92 is turned off and the second switch 93 is turned on, and the condensed water can be collected at the condensed water supply end, and the condensed water collected at the condensed water supply end can be detected and analyzed. In this way, during the condensate preparation process, with the cooperation of the first switch 92 and the second switch 93, not only can the required condensate be collected, but also the pure steam at the pure steam sampling point can be prevented from being connected to the external environment through the air-cooled sterile pure steam sampling device, thereby ensuring that the pure steam at the pure steam sampling point will not be contaminated by microorganisms during the sampling process.

[0050] In addition, as an example, the first switch 92 and the second switch 93 are both hygienic switches, which can be used to reduce the contamination of clean pure steam and control microbial indicators such as endotoxins.

[0051] See also Figures 1 to 3 In addition, as an example, the first switch 92 is provided with a first adjusting knob 94 for adjusting the opening of the air inlet pipe 20. By operating the first adjusting knob 94, the opening of the air inlet pipe 20 can be controlled, so that the pure steam flow rate entering the air inlet pipe 20 meets the requirements. Similarly, the second switch 93 is provided with a second adjusting knob 95 for adjusting the opening of the water outlet pipe 30. By operating the second adjusting knob 95, the opening of the water outlet pipe 30 can be controlled, so that the condensed water flow rate discharged from the water outlet pipe 30 meets the requirements. Specifically, the first adjusting knob 94 is arranged outside the box body 60, and the rod of the first adjusting knob 94 penetrates the box body 60 and extends into the inside of the box body 60 to be connected to the first switch 92, so that the opening of the first switch 92 can be adjusted by the first adjusting knob 94 outside the box body 60. Similarly, the second adjusting knob 95 is arranged outside the box body 60, and the rod of the second adjusting knob 95 passes through the box body 60 and extends into the inside of the box body 60 to be connected to the second switch 93, so that the opening size of the second switch 93 can be adjusted by the second adjusting knob 95 outside the box body 60.

[0052] See also Figures 1 to 3In one embodiment, an air-cooled sterile pure steam sampling method adopts the air-cooled sterile pure steam sampling device of any of the above embodiments, including the following steps: connecting the air inlet pipe 20 with the pure steam sampling point, turning on the fan 40, and connecting the condensate supply end with the detection equipment.

[0053] In the above-mentioned air-cooled sterile pure steam sampling method, pure steam enters through the air inlet pipe 20, and is cooled and heat-exchanged by the cold air of the fan 40 when it flows through at least two heat exchangers 10 in sequence, so that the pure steam condenses inside the heat exchanger 10 to form condensed water. The condensed water is discharged to the outside through the water outlet pipe 30, and the condensed water can be sampled and tested. In this way, on the one hand, since there are at least two heat exchangers 10, the heat exchange effect can be guaranteed, and the working efficiency of converting pure steam into condensed water can be guaranteed. At the same time, compared with the traditional structure, since a combination of at least two heat exchangers 10 and a fan 40 is set, there is no need for a water storage tank or a semiconductor refrigerator as in the traditional technology, which can reduce the product volume to a certain extent; on the other hand, since the height of the setting positions of all heat exchangers 10 tends to decrease successively according to the flow direction of the airflow, the condensed water generated in the heat exchanger 10 can flow from high to low in the direction of the airflow and be discharged to the condensed water supply end of the water outlet pipe 30. The generated condensed water will not gather inside the heat exchanger 10, that is, it can avoid the condensed water remaining in the heat exchanger 10 from breeding bacteria, thus ensuring the cleanliness.

[0054] See also Figures 1 to 3 In one embodiment, the air-cooled sterile pure steam sampling method comprises the following steps:

[0055] Before connecting the air inlet pipe 20 to the pure steam sampling point, close the second switch valve 93 provided on the water outlet pipe 30, and then open the first switch valve 92 provided on the air inlet pipe 20;

[0056] Before the condensed water supply end discharges the condensed water to the detection device, the first switch valve 92 provided on the air inlet pipe 20 is closed, and then the second switch valve 93 provided on the water outlet pipe 30 is opened.

[0057] In this way, during the condensate preparation process, with the cooperation of the first switch 92 and the second switch 93, not only can the required condensate be collected, but also the pure steam at the pure steam sampling point can be prevented from being connected to the external environment through the air-cooled sterile pure steam sampling device, thereby ensuring that the pure steam at the pure steam sampling point will not be contaminated by microorganisms during the sampling process.

[0058] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0064] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

1. An air-cooled sterile pure steam sampling device, characterized in that: The air-cooled sterile pure steam sampling device comprises: At least two heat exchangers, all of which are arranged in series, and the height of the arrangement positions of all of the heat exchangers is in a decreasing trend according to the airflow direction. The heat exchanger located at the first position in the airflow direction is recorded as the first heat exchanger, and the heat exchanger located at the last position is recorded as the last heat exchanger. The heat exchanger is a finned heat exchanger; the heat exchanger includes a heat exchange tube, and the heat exchange tubes of adjacent heat exchangers are connected by a connecting tube. The heat exchanger also includes a plurality of heat exchange fins arranged on the heat exchange tube at intervals along the airflow direction in the heat exchange tube; An air inlet pipe and a water outlet pipe, wherein one end of the air inlet pipe is connected to a pure steam sampling point, and the other end of the air inlet pipe is connected to an air inlet end of the first heat exchanger, and one end of the water outlet pipe is connected to a last heat exchanger, and the other end of the water outlet pipe is a condensed water supply end; A fan, the fan is used to blow cold air to all the heat exchangers to dissipate heat from the heat exchangers, so as to cool the pure steam inside the heat exchangers to form condensed water; and Box body; all the heat exchangers are arranged inside the box body, and the height positions of all the heat exchangers relative to the bottom plate of the box body tend to decrease successively according to the direction of airflow flow; the air inlet pipe passes through the wall of the box body and extends to the outside of the box body, and the water outlet pipe passes through the wall of the box body and extends to the outside of the box body; for the heat exchange tubes of any two adjacent heat exchangers, the line connecting the center of the air outlet end of the heat exchange tube of one of the heat exchangers and the center of the air inlet end of the heat exchange tube of the other heat exchanger is a reference line, and the inclination angle of the reference line relative to the bottom plate surface of the box body is a, and a is 5° to 85°; the projections of all the connecting pipes on the side plates of the box body along the length direction of the heat exchange tubes of the heat exchanger are W-shaped; the air-cooled sterile pure steam sampling device also includes a handle, and the handle is arranged on the top wall of the box body.

2. The air-cooled sterile pure steam sampling device according to claim 1 is characterized in that: The connecting pipe is a U-shaped pipe, a circular arc pipe or an elliptical arc pipe.

3. The air-cooled sterile pure steam sampling device according to claim 1 is characterized in that: The heat exchange tubes of the heat exchanger are arranged parallel to the bottom plate of the box body.

4. The air-cooled sterile pure steam sampling device according to claim 1 is characterized in that: The distance between the heat exchange tubes of the heat exchanger and the bottom plate of the box body gradually decreases along the air flow direction.

5. The air-cooled sterile pure steam sampling device according to claim 1 is characterized in that: a is 10° to 40°.

6. The air-cooled sterile pure steam sampling device according to claim 1 is characterized in that: The air-cooled sterile pure steam sampling device also includes a power supply arranged inside the box, and the power supply is connected to the fan; the air-cooled sterile pure steam sampling device also includes insulation cotton arranged inside the box, and the insulation cotton is arranged on the inner wall of the box.

7. The air-cooled sterile pure steam sampling device according to claim 1 is characterized in that: The air-cooled sterile pure steam sampling device also includes at least one universal wheel, which is arranged on the bottom wall of the box.

8. The air-cooled sterile pure steam sampling device according to any one of claims 1 to 7, characterized in that: The air-cooled sterile pure steam sampling device also includes a first switch and a second switch; the first switch is arranged on the air inlet pipe, and the second switch is arranged on the water outlet pipe.

9. A method for sampling air-cooled sterile pure steam, characterized in that: The air-cooled sterile pure steam sampling device as described in any one of claims 1 to 8 is used, comprising the following steps: connecting the air inlet pipe to the pure steam sampling point, turning on the fan, and connecting the condensate supply end to the detection equipment.

10. The air-cooled sterile pure steam sampling method according to claim 9, characterized in that: The air-cooled sterile pure steam sampling method comprises the following steps: Before connecting the air inlet pipe to the pure steam sampling point, close the second switch provided on the water outlet pipe, and then open the first switch provided on the air inlet pipe; Before the condensed water supply end discharges the condensed water to the detection device, the first switch provided on the air inlet pipe is closed, and then the second switch provided on the water outlet pipe is opened.

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