Method of drying reagent refrigerator

Abstract

To efficiently dry a reagent refrigerator.SOLUTION: A reagent refrigerator 1 includes a heat exchanger 121 that can switch between cooling and heating, a pipe 132 in which outside air flows inside a gap space S1 formed between a bottom surface of an inner wall 103 and a reagent disc 101 is installed, the pipe 132 is installed so as to pass over the heat exchanger 121, an end portion 132a of the pipe 132 from which the outside air is blown out is provided inside the gap space S1 formed between the bottom surface of the inner wall 103 and the reagent disc 101, and in a state where an opening / closing port 151 is closed, heating by the heat exchanger 121 allows warm air A41 to A45 having a temperature higher than a temperature inside the reagent refrigerator 1 to flow so as to go around the inside of the reagent refrigerator 1.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a method for drying a reagent refrigerator. [Background technology]

[0002] Automated analyzers are devices that automatically analyze blood and other biological samples and output the results, and have become indispensable equipment in hospitals and medical testing facilities. In such an automatic analyzer, the reagents used in the reaction are dispensed into containers for each reagent, and these containers are placed in the reagent installation section inside the reagent refrigerator. Furthermore, the inside of the reagent refrigerator is kept cool, for example, at about 5 to 12°C, to stably store the reagents.

[0003] In an automatic analyzer, a through hole for aspirating a reagent from a reagent container placed in a reagent refrigerator is generally provided in the reagent refrigerator. Patent Document 1 discloses a technique for suppressing the occurrence of condensation due to this. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2013-185980 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the reagent cooler described in Patent Document 1, when the automatic analyzer is stopped after shipping inspection or during long-term storage for field maintenance, the air introduced into the reagent cooler from the cold air introduction path while the automatic analyzer is operating may contain moisture. In such a case, condensation may occur inside the reagent cooler, and the condensed water may accumulate on the inner wall bottom of the reagent cooler and may be left for a long time, so it is desirable to remove it. Therefore, a method is generally considered in which the inside of the reagent cooler is opened to the outside air, and the condensation is removed by natural drying or by disassembling the automatic analyzer and wiping it off manually. However, the former requires a long drying time, and it is difficult to visually confirm that the condensation has been completely removed on the inner wall bottom of the reagent cooler. In addition, the latter may involve risks such as parts shortages and damage when the automatic analyzer is disassembled.

[0006] An object of the present invention is to efficiently dry a reagent refrigerator. [Means for solving the problem]

[0007] The present invention relates to a method for drying a reagent cooler having a thermal insulation structure and storing a plurality of reagent containers containing reagents while keeping them cool, the reagent cooler comprising: a reagent disk forming a reagent container holder which is a space for holding the reagent containers; an inner wall installed outside the reagent disk at a predetermined distance from the reagent disk; a first lid for closing the reagent disk and an upper portion of the inner wall; and a heat exchanger capable of switching between cooling and heating, the reagent disk having a hole on a bottom surface of the reagent container holder and forming a space between the first lid and the reagent disk; the first lid having a reagent aspiration hole which is a hole for inserting a reagent aspiration nozzle for aspirating the reagent; and an opening / closing lid for opening and closing an opening for inserting and removing the reagent container, a plurality of the heat exchangers are provided on the opposite side of the reagent disk with respect to a bottom surface of the inner wall, a pipe through which outside air circulates is provided inside a space formed between the bottom surface of the inner wall and the reagent disk, the pipe is provided so as to pass above the heat exchangers, and an end of the pipe from which the outside air is discharged is provided inside the space formed between the bottom surface of the inner wall and the reagent disk, and with the opening closed, heating is performed by the heat exchanger, thereby flowing hot air of a temperature higher than the temperature inside the reagent refrigerator to circulate inside the reagent refrigerator. Other solutions will be described in the embodiments as appropriate. Effect of the Invention

[0008] The reagent cooler can be dried efficiently. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a plan view showing the overall configuration of an automatic analyzer. [Diagram 2] FIG. 2 is a vertical cross-sectional view showing a schematic configuration of the reagent refrigerator in the first embodiment. [Diagram 3] FIG. 4 is a vertical cross-sectional view of the reagent cooler showing the flow of hot air in the first embodiment. [Figure 4]FIG. 4 is a horizontal cross-sectional view of the reagent cooler showing the flow of hot air in the first embodiment. [Diagram 5] FIG. 4 is a perspective view showing a specific configuration of the inside of the reagent cooler when viewed from the opening of the opening / closing lid. [Figure 6] FIG. 11 is a vertical cross-sectional view of a reagent cooler showing the flow of hot air in the second embodiment. [Figure 7] FIG. 11 is a vertical cross-sectional view of a reagent cooler showing the flow of hot air in the third embodiment. [Figure 8] FIG. 11 is a cross-sectional plan view of a reagent cooler showing the flow of hot air in a third embodiment. [Figure 9] FIG. 13 is a horizontal cross-sectional view of the reagent cooler according to the fourth embodiment, showing the flow of hot air in the third embodiment. [Figure 10] FIG. 2 is a diagram showing the hardware configuration of a control device used in the first to fourth embodiments. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Next, a mode for carrying out the present invention (referred to as an "embodiment") will be described in detail with reference to the drawings as appropriate. In this embodiment, a method for drying a reagent refrigerator will be described. Hereinafter, the preferred embodiment of the present invention will be described with reference to the drawings.

[0011] First Embodiment [Automatic analyzer 200] First, the overall configuration of an automatic analyzer 200 used in this embodiment will be outlined with reference to FIG. FIG. 1 is a plan view showing the overall configuration of an automatic analyzer 200 used in this embodiment. The automatic analyzer 200 is an apparatus that reacts a sample with a reagent and measures the resulting reaction liquid. The automatic analyzer 200 has a reagent cooler 1, a specimen dispensing unit 201, a reaction table 210, a reaction container transport unit 221, and a specimen dispensing tip / reaction container holding unit 222. The automatic analyzer 200 further has a reagent dispensing unit 202, a reagent stirring unit 203, a processing unit 230, a detection unit 241, a rack transport line 250, a control device 301, and a temperature control device 302. The automatic analyzer 200 is also provided with a specimen dispensing tip disposal port 261.

[0012] In a process for analyzing a sample (analysis process), a user places reagent container T1 required for analysis in reagent refrigerator 1. Note that in a process for drying reagent refrigerator 1 (drying process) performed in this embodiment to remove droplets caused by condensation inside reagent refrigerator 1, the analysis operation of automatic analyzer 200 is stopped, and reagent container T1 has been removed from reagent refrigerator 1 by the user.

[0013] The rack transport line 250 is a line for transporting the rack 251 to a sample dispensing position or the like. A plurality of sample containers T2 into which samples have been dispensed can be placed on the rack 251. When the rack 251 arrives at the sample dispensing position, the sample dispensing unit 201 aspirates the sample dispensed into the sample container T2 and dispenses the sample into a reaction container T3 placed on the reaction table 210.

[0014] The specimen dispensing tip / reaction container holder 222 stores disposable specimen dispensing tips T4 used for specimen dispensing and reaction containers T3. In the example of Fig. 1, the reaction containers T3 are stored on the left side of the specimen dispensing tip / reaction container holder 222, and the specimen dispensing tips T4 are stored on the right side. The reaction vessel transport unit 221 transports the reaction vessel T3 to the reaction vessel primary stock 222a, and further transports the reaction vessel T3 from the reaction vessel primary stock 222a to the reaction table 210. In addition, the sample dispensing tip T4 is transported by the reaction vessel transport unit 221 to the tip primary stock 222b, and further transported to the tip mounting unit 223. After mounting the sample dispensing tip T4 at the tip mounting unit 223, the sample dispensing unit 201 aspirates and dispenses the sample from the sample vessel T2 placed on the rack 251 to the reaction vessel T3 installed on the reaction table 210.

[0015] The reagent cooler 1 stores reagent containers T1 into which reagents have been dispensed. As shown in FIG. 1, three reagent containers T1 are used as one set. In order to stably store the reagents during the analysis process, the reagents are accommodated in the reagent containers T1 and kept cool by the reagent cooler 1. The reagent cooler 1 has a reagent disk 101 that is a disk for storing the reagent containers T1. The reagent cooler 1 also has a heat insulating function to keep the temperature inside the cooler constant. The reagent containers T1 can be accessed by the user by opening an opening / closing lid 152 provided on a lid 150 of the reagent cooler 1. A reagent suction hole 153 that is a hole for suctioning the reagent is provided in a part of the lid 150. Note that each component of the reagent cooler 1 will be described separately later.

[0016] The reagent dispensing unit 202 aspirates the reagent contained in the reagent container T1 through the reagent aspirating hole 153 and dispenses it into the reaction container T3. Each of the reagent containers T1 housed in the reagent disk 101 contains various assay reagents used in analyzing samples.

[0017] The reaction table 210 is a disk for carrying out a reaction between a specimen and a reagent at a constant temperature. The temperature of the reaction table 210 is maintained at a predetermined temperature by a heater (not shown), thereby promoting the reaction between the specimen and the reagent. A plurality of reaction containers T3 are held on the reaction table 210, and serve as a site where the specimen and the reagent are mixed and reacted.

[0018] The processing unit 230 performs pre-analysis of the sample by the detection unit 241. The reaction container T3, which has been set on the reaction table 210 and in which the reaction has been completed, is transported to the processing unit 230 by the transport unit 231. After that, the pre-processing cleaning mechanism 232 removes the reaction liquid from the reaction container T3 while capturing the magnetic particles with a magnet, and dispenses a buffer solution. Then, the reaction container T3 is transported to the detection unit 241 by the transport unit 231.

[0019] The detection unit 241 detects components and the like in the liquid after the reaction has been completed in the reaction vessel T3. The control device 301 controls various operations of each part of the automatic analyzer 200, and performs calculation processing to determine the concentration of a predetermined component in the specimen from the detection result performed by the detection unit 241. In addition, a temperature control device 302 that controls the temperature of the reagent refrigerator 1 is connected to the control device 301.

[0020] The used sample dispensing tip T4 is discarded through the sample dispensing tip disposal port 261.

[0021] First Embodiment Next, the reagent cooler 1 in the first embodiment will be described with reference to Figures 2 to 5. In the description of Figures 2 to 5, Figure 1 will be referred to as appropriate. [Reagent cooler 1] Fig. 2 is a vertical cross-sectional view showing a schematic configuration of the reagent refrigerator 1 in the first embodiment. Fig. 3 is a vertical cross-sectional view of the reagent refrigerator 1 showing the flow of hot air in the first embodiment. Fig. 4 is a horizontal cross-sectional view of the reagent refrigerator 1 showing the flow of hot air in the first embodiment. Fig. 5 is a perspective view showing a specific configuration inside the reagent refrigerator 1 when viewed from the opening 151 of the opening / closing lid 152 in Fig. 3. Figs. 2 and 3 show cross-sectional views taken along line AA in Fig. 1, and Fig. 4 shows a cross-sectional view taken along line BB in Fig. 2. First, the structure of the reagent cooler 1 will be described with reference to FIG. 2, the reagent refrigerator 1 has a reagent disk 101, an inner wall 103, and a heat insulating material 141. The reagent refrigerator 1 also has a motor 111 and a drive unit 112 as a rotation drive system. The reagent refrigerator 1 also has a heat exchanger 121, a temperature sensor 122, a heat sink 123, a fan 124, and a duct 125 as a cooling system. The reagent refrigerator 1 also has a drain 131, a pipe 132, and a blower 133 as a cooling system.

[0022] The reagent cooler 1 has a cylindrical shape as a whole, as shown in FIG. 1 and FIG. 2. As shown in FIG. 2, the reagent cooler 1 has a reagent disk 101 installed therein. The reagent disk 101 is formed to be circular in plan view. Furthermore, as shown in FIG. 2, the reagent disk 101 is formed to have a cross section that is approximately V-shaped. That is, the cross section of the reagent disk 101 is formed by a U-shaped member. The U-shaped portion is formed so that the space portion faces upward (Z direction). The reagent container holder 102 that holds the reagent container T1 (see FIG. 1) is formed in the space formed by the U-shaped portion. Note that the shape of the reagent cooler 1 is arbitrary, but in this embodiment, as shown in FIG. 1, it is desirable to form the reagent cooler 1 in a cylindrical shape so that the distances from the inner wall 103 of the reagent cooler 1 on the same circle are uniform. The reagent container holder 102 holds a plurality of reagent containers T1 radially along the circumferential direction inside the reagent cooler 1 (see FIG. 1). Furthermore, an inner wall 103 is provided around the reagent container holder 102 so as to cover the lower side, inside, and outside of the reagent container holder. A predetermined distance is provided between the inner wall 103 and the reagent container holder 102. Also, an opening 104 is provided in the bottom surface of the reagent disk 101. The opening 104 will be described later.

[0023] 2, a gap space S1 is formed between the bottom surface of the reagent disk 101 and the bottom surface of the inner wall 103. Furthermore, a gap space S2 and a gap space S4 are formed between the side surface of the reagent disk 101 and the side surface of the inner wall 103.

[0024] (Rotational drive system) In addition, the reagent disk 101 is connected to a central shaft 171 (not shown). The central shaft 171 has a cylindrical or conical shape, and is placed at the center of the reagent cooler 1. In the analysis process, a motor 111 provided outside the reagent refrigerator 1 rotates about a rotation axis C2, and the rotation of the motor 111 is transmitted to the reagent disk 101 via a drive unit 112. This causes the reagent disk 101 to rotate about the rotation axis C1.

[0025] (cooling system) As described above, in the reagent cooler 1, the heat exchanger 121, the temperature sensor 122, the heat sink 123, the fan 124, the duct 125, the drain 131, the pipe 132, and the blower 133 constitute a cooling system. The cooling system cools the reagent (reagent container T1 (see FIG. 1)) during the analysis process. The temperature of the cooling system is controlled by the temperature control device 302. Specifically, the temperature control device 302 controls the operation of the heat exchanger 121 and the fan 124 to manage the temperature of the reagent cooler 1. Incidentally, as shown in FIG. 4, a plurality of heat exchangers 121 (four in the example of FIG. 4) are provided in the circumferential direction of the inner wall 103. As shown in FIG. 4, the pipe 132 is provided so as to pass above all the installed heat exchangers 121. The details of the cooling system will be described later. In FIG. 2 and FIG. 3, the outlet position of the pipe 132 is shifted from FIG. 4 to make the drawings easier to see. Furthermore, in FIG. 3, the diameter of the drain 131 is shown enlarged for ease of viewing.

[0026] (Thermal insulation structure) 2, a heat insulating material 141 is provided around the inner wall 103. The reagent cooler 1 is insulated by the heat insulating material 141, and is structured so that heat inside the reagent cooler 1 is unlikely to escape to the outside. The heat insulating material 141 is desirably made of a material with low thermal conductivity, such as expanded polystyrene or expanded polyurethane.

[0027] (lid 150) A lid 150 is provided on the top of the reagent disk 101. The lid 150 is provided with an opening 151, which can be opened and closed by an opening lid 152. A user opens the opening lid 152 and replaces the reagent container T1 (see FIG. 1) through the opening 151. The lid 150 and the opening lid 152 are made of a heat insulating material similar to the heat insulating material 141, and are configured to prevent heat from inside the reagent cooler 1 from escaping to the outside.

[0028] 2, a reagent suction hole 153 is formed in the lid 150, and the outside air and the inside of the reagent cooler 1 communicate with each other via the reagent suction hole 153. That is, the lid 150 is formed with the reagent suction hole 153 through which the reagent dispensing nozzle 202a provided in the reagent dispensing unit 202 can pass. The inside and outside of the reagent cooler 1 communicate with each other via the reagent suction hole 153. When the reagent dispensing nozzle 202a is inserted into the reagent suction hole 153, the reagent dispensing unit 202 aspirates the reagent from the reagent container T1 placed in the reagent container holder 102. Note that, although three reagent suction holes 153 are provided in the examples shown in FIGS. 1, 3, and 4, the number of reagent suction holes 153 is not limited to three. As shown in FIG. 2, a gap space S3 is formed between the lid 150 and the reagent disk 101.

[0029] (Structure of Reagent Disk 101) The reagent disk 101 has a first surface 101A along the vertical direction (Z direction) and a second surface 101B (along the horizontal direction (X direction)) perpendicular to the first surface 101 A. Here, as shown in FIG. 2, the second surface 101B constitutes a part of the reagent container holder 102. As shown in FIG. 5, the individual reagent container holders 102 are separated by dividers 106 provided on the reagent disk 101 . 5, the reagent disk 101 has recesses 105 formed in the upper part of the partition portion 106 that separates the reagent container holder 102. As shown in FIG. 5, the recesses 105 are configured to be continuous in an annular shape on the upper surface of the reagent disk 101. In the example shown in FIG. 5, the recesses 105 have a U-shaped stepped shape, but are not limited thereto, and the recesses 105 may have a shape such as a substantially semicircular shape or a substantially semielliptical shape. The upper part of the reagent disk 101 refers to the portion facing the lid 150.

[0030] (Drying process) Next, the drying process will be described mainly with reference to Figures 3 and 4, and also with reference to Figures 2 and 5 as appropriate. As described above, Figure 3 is a diagram in which an air flow has been added to Figure 2. Therefore, in Figure 3, the components of the reagent refrigerator 1 are the same as those in Figure 2, and the same reference numerals are used for the same components as those in Figure 2 (however, gap spaces S1 to S4 are omitted in Figure 3). In the first embodiment, a method for drying the reagent refrigerator 1 is proposed, in which the inside of the reagent refrigerator 1 is dried by flowing hot air into the reagent refrigerator 1 from the opening / closing opening 151 (arrow A1) as shown in FIG. 3.

[0031] When drying is performed, the analysis operation of the automatic analyzer 200 is stopped, and the reagent container T1 (see FIG. 1) is removed. Then, the user opens the opening / closing cover 152, and hot air is introduced from the outside to the inside of the reagent cooler 1 through the opening 151 (arrow A1). The hot air is, for example, about 40° C., but is not limited to this temperature. As shown in FIG. 3, the hot air is blown so as to be inclined at a predetermined angle with respect to the horizontal direction of the reagent disk 101.

[0032] The hot air introduced into the reagent refrigerator 1 is desirably air that is warmer than the outside air and has a low humidity and is dry air, generated by a heating device (not shown) such as a heater from outside the reagent refrigerator 1. For example, the hot air may be introduced into the reagent refrigerator 1 by inserting one end of a hose (not shown) connected to a heating device (not shown) into the opening 151.

[0033] Additionally, the hot air (arrow A1) is preferably at a temperature higher than the temperature inside the reagent refrigerator 1. Also, the hot air (arrow A1) is preferably at a dew point temperature that does not cause condensation even when cooled by being introduced into the reagent refrigerator 1, but any hot air that can dry the inside of the reagent refrigerator 1 will suffice.

[0034] As shown in Fig. 3, the hot air hits a portion P1 where the first surface 101A and the second surface 101B intersect. As a result, an airflow is formed that branches into two directions, the horizontal direction (x direction) and the vertical direction (z direction), relative to the reagent refrigerator 1. Of the two branching airflows, the airflow (hot air) that flows along the first surface 101A is indicated by arrow A2. Moreover, the airflow (hot air) that flows along the second surface 101B is indicated by arrow A3.

[0035] The hot air (arrow A2) flowing along the wall surface of the first surface 101A along the vertical direction flows toward the bottom surface of the reagent container holder 102. Then, most of it passes through the opening hole 104 and reaches the bottom surface of the inner wall 103. The hot air that reaches the bottom surface of the inner wall 103 branches into hot air (arrow A21) in the clockwise direction on the paper and hot air (arrow A21) in the counterclockwise direction on the paper along the bottom surface of the inner wall 103 in the gap space S1 (see FIG. 2) as shown in FIG. 4. The hot air flows toward the side with the lower fluid resistance, but in this case, there is not much difference between the clockwise direction and the counterclockwise direction in terms of fluid parallelism, so the hot air branches so that approximately equal amounts flow in both directions. That is, the hot air (arrow A21) flows in a circular manner along the circumferential direction of the inner wall 103. In addition, some of the hot air rises in the gap space S2 as shown by the arrow A22, and some rises in the gap space S4 as shown by the arrow A24. The hot air indicated by the arrow A24 passes around the central axis 171, and then passes through the gaps between the members to join the hot air indicated by the arrow A3.

[0036] 3 rises toward the opening 151, and although a part of it leaks from the opening 151 to the outside of the reagent refrigerator 1, most of it joins the hot air indicated by the arrow A3 described below. The flow of hot air indicated by the arrows A22, A23, and A24 can uniformly heat the side of the reagent refrigerator 1.

[0037] The hot air (arrow A21) flowing in the circumferential direction of the inner wall 103 in the gap space S1 heats the bottom surface of the reagent disk 101 and the entire bottom surface of the inner wall 103 while diffusing (see FIG. 4). This allows the lower space of the reagent refrigerator 1 to be heated uniformly.

[0038] Furthermore, the heated air has a lower density and becomes lighter, so that an air current (upward air current) that rises in the vertical direction of the inner wall 103 is formed. Therefore, an upward air current is also generated in the hot air (arrow A21) flowing through the gap space S1, and this upward air current rises inside the reagent container holding part 102 through the opening hole 104, or rises through the gap space S2 and the gap space S4 (arrows A22 to A24). The side surface of the reagent disk 101 and the side surface of the inner wall 103 are uniformly heated by this upward air current. Incidentally, of the hot air indicated by the arrow A23, the hot air rising through the gap space S4 passes around the central axis 171, and then passes through the gap between the members to join the hot air indicated by the arrow A3.

[0039] 3, the hot air (arrow A3) flowing along the second surface 101B that is aligned horizontally to the reagent refrigerator 1 forms an air current that circulates in the circumferential direction in the gap space S3 (see FIG. 2). The hot air (arrow A3) flowing through the gap space S3 heats the entire top surface of the reagent disk 101 and the bottom surface of the lid 150 while diffusing in the circumferential direction. As a result, the upper space of the reagent refrigerator 1 can be heated uniformly.

[0040] Furthermore, as shown in FIG. 5, when the second surface 101B forms a recess 105, the recess 105 can increase the cross-sectional area of ​​the gap space S3. Of the hot air (arrow A3) flowing through the gap space S3, the hot air (arrow A31 in FIG. 5) flowing through the recess 105 flows through the space formed in a circular shape by the recess 105. Therefore, the hot air indicated by the arrow A31 can circulate around the space formed in a circular shape by the recess 105 without impeding the airflow in the circumferential direction. As a result, the heating effect can be improved. The hot air indicated by the arrow A3 is also divided into a clockwise airflow and a counterclockwise airflow, but only the clockwise airflow is shown in FIG. 5. It is desirable that the recess 105 is provided with a cross-sectional area that allows as much airflow indicated by the arrow A31 to flow as possible.

[0041] Returning to the explanation of Figure 3. As described above, the density of the heated air is low and the air becomes lighter, so that the heated air indicated by the arrow A3 also rises, forming an air current. Therefore, when the heated air indicated by the arrow A3 reaches the reagent suction hole 153, it is discharged to the outside from the reagent suction hole 153 (arrow A32).

[0042] As described above, the hot air (arrow A21) flowing along the bottom of the inner wall 103 also flows circumferentially along the bottom surface of the inner wall 103 and rises (arrow A23) through the gap space S2 (see FIG. 2), gap space S4, and inside the reagent container holder 102 due to the rising air current. Of the hot air indicated by arrow A23, the hot air rising through gap space S2 and reagent container holder 102 merges as indicated by arrow A3, and is ultimately discharged to the outside from the reagent suction hole 153 (arrow A32).

[0043] Thus, according to the first embodiment, the inside (top, bottom, sides) of the reagent refrigerator 1 can be easily heated uniformly without disassembling the reagent refrigerator 1. This makes it possible to reduce the relative humidity inside the reagent refrigerator 1 and to dry the inside of the reagent refrigerator 1 in a short time. As a result, it becomes possible to efficiently and evenly remove droplets generated by condensation during cooling from the inside of the reagent refrigerator 1.

[0044] The method for drying the reagent refrigerator 1 shown in the first embodiment is performed after the shipping inspection, i.e., when the automatic analyzer 200 is stopped, i.e., when the power supply to the automatic analyzer 200 is stopped, while the automatic analyzer 200 is being used by a user. That is, according to this embodiment, the inside of the reagent refrigerator 1 can be dried even when there is no power supply to the automatic analyzer 200. Furthermore, according to this embodiment, the reagent refrigerator 1 can be efficiently dried without changing the configuration of the existing reagent refrigerator 1.

[0045] Furthermore, according to the first embodiment, when the inside of the reagent refrigerator 1 is heated by hot air, the temperature of the inner wall 103 can be made uniform in the vertical and horizontal directions by the circulating hot air. This makes it easier to make the temperature distribution uniform inside the reagent refrigerator 1. For this reason, it is desirable to use a material with high thermal conductivity, such as copper or aluminum, for the material of the inner wall 103.

[0046] When the inventors naturally dried the reagent refrigerator 1 with the opening / closing door 151 open, about 80% of the droplets due to the experimentally simulated condensation state were removed in 21 hours. In contrast, as a result of carrying out the drying method shown in the first embodiment, the droplets due to the experimentally simulated condensation state were almost completely removed in 45 minutes after the hot air was introduced into the reagent refrigerator 1. Thus, the inventors were able to confirm a significant improvement in the efficiency of removing droplets due to condensation according to this embodiment.

[0047] <Second embodiment> Next, a second embodiment will be described with reference to FIG. Fig. 6 is a vertical cross-sectional view of the reagent refrigerator 1 showing the flow of hot air in the second embodiment. Fig. 6 shows a cross-sectional view taken along line AA in Fig. 1, similar to Fig. 2 and Fig. 3. In Fig. 6, the same components as those in Fig. 3 are given the same reference numerals and the description thereof will be omitted. In the second embodiment, first, the opening / closing opening 151 is opened. Then, a hot air blowing lid 160 prepared separately from the reagent cooler 1 is installed on the opening / closing opening 151. The hot air blowing lid 160 is provided with a through hole 161 inclined at a predetermined angle with respect to the horizontal direction of the reagent disk 101. For example, one end of a hose (not shown) is connected to a heating device (not shown) such as a heater, and the other end is set at the top of through-hole 161 provided in hot air blowing lid 160. This allows hot air to be introduced into the inside of reagent refrigerator 1 through through-hole 161 (arrow A1). The airflow of the hot air after introduction is the same as in the first embodiment, so a description thereof will be omitted here. Note that hot air blowing lid 160 is desirably configured to have a heat-insulating structure using the same material as heat insulating material 141.

[0048] The effect of the automatic analyzer 200 in the second embodiment will be described. As described above, the hot air introduced from the outside is blown into the inside of the reagent cooler 1 through the through hole 161 provided in the hot air blower lid 160 (arrow A1). At this time, the hot air blower lid 160 is installed on the open opening 151, so that the opening area of ​​the opening 151 can be reduced. This makes it possible to prevent outside air other than the hot air from entering the inside of the reagent cooler 1. Furthermore, since the opening area of ​​the opening 151 can be reduced by the hot air blower lid 160, it is possible to prevent the hot air introduced into the reagent cooler 1 from leaking from the inside of the reagent cooler 1 to the outside. In other words, the airtightness of the reagent cooler 1 can be improved, and drying can be performed more efficiently in a shorter time than in the first embodiment.

[0049] Furthermore, by setting the inclination angle of the through-hole 161 to an appropriate angle in advance, it is possible to apply hot air to the portion P1 where the first surface 101A and the second surface 101B of the reagent disk 101 intersect without fine adjustment. Furthermore, in the second embodiment, similarly to the first embodiment, after shipping inspection, i.e., when the automatic analyzer 200 is being used by a user, the inside of the reagent refrigerator 1 can be dried even when the automatic analyzer 200 is stopped and no power is being supplied to the automatic analyzer 200.

[0050] In the first and second embodiments, the hot air (arrow A1 in Figs. 3 and 6) is introduced toward the central axis 171, but this is not limiting. For example, the hot air may be introduced toward the circumferential direction of the reagent refrigerator 1 at a predetermined angle with respect to the horizontal direction.

[0051] <Third embodiment> Next, a third embodiment will be described with reference to Figures 2, 7, and 8. In the third embodiment, a method for drying the inside of the reagent refrigerator 1 is provided by converting a structure used for cooling the reagent refrigerator 1 into a structure for heating. Fig. 7 is a vertical cross-sectional view of the reagent cooler 1 showing the flow of hot air in the third embodiment. Also, Fig. 8 is a horizontal cross-sectional view of the reagent cooler 1 showing the flow of hot air in the third embodiment. Fig. 7 shows a cross-sectional view taken along line AA in Fig. 1, and Fig. 8 shows a cross-sectional view taken along line BB in Fig. 7. Note that in Figs. 7 and 8, the same components as those in Figs. 3 and 4 are designated by the same reference numerals and will not be described.

[0052] The drying process of the reagent cooler 1 in the third embodiment is performed with the opening / closing lid 152 of the reagent cooler 1 closed. As shown in Figs. 7 and 8, a plurality of heat exchangers 121a to 121d (121) are installed in the circumferential direction under the bottom surface of the inner wall 103. In Fig. 7, the heat exchanger 121 is present only on the right side of the paper, but the heat exchanger 121 is omitted on the left side of the paper for convenience in order to explain the structures of the drain 131, the pipe 132, etc. One end of the pipe 132 is connected to the blower 133. The drain 131 is provided so that the gap space S1 (see Fig. 2) communicates with the outside of the reagent cooler 1. The pipe 132 is provided inside the drain 131, and is drawn from the outside to the inside of the reagent cooler 1. The drain 131 opens at the bottom of the inner wall 103 (upper opening 131a). As described later, water droplets due to cooling are discharged from a pipe outlet 132a which is the end of the pipe 132. The drain 131 has a function of discharging the water droplets discharged from the pipe outlet 132a to the outside of the reagent cooler 1. In addition, in Fig. 7, the position of the pipe outlet 132a is shifted from that in Fig. 8 to make the drawing easier to see.

[0053] As described above, the pipe 132 is installed inside the drain 131 as shown in Fig. 7, so that the pipe 132 penetrates the bottom surface of the inner wall 103 from the portion where the heat exchanger 121 is not installed and is drawn into the inside of the reagent cooler 1. Furthermore, as shown in Fig. 8, the path of the pipe 132 is installed on the bottom surface of the inner wall 103 so as to go around the central axis 171 of the reagent disk 101. Therefore, as shown in Fig. 8, the pipe 132 passes above all of the heat exchangers 121a to 121d.

[0054] In particular, when pipe 132 is drawn into reagent refrigerator 1, it passes through the inner diameter side of drain 131, which has the advantage that it is not necessary to provide a separate hole in inner wall 103. In other words, by using the same hole as the outlet for water droplets discharged from pipe outlet 132a and the inlet for outside air, it is possible to reduce the number of holes connecting the inside and outside of reagent refrigerator 1. This makes it possible to improve the airtightness of reagent refrigerator 1. Also, the same hole can be used to drain water droplets discharged from pipe outlet 132a and to introduce outside air. The installation of pipe 132 will be explained later.

[0055] (Cooling and heating of the inner wall 103) As shown in Fig. 7, the temperature of each of the heat exchangers 121 is measured by a temperature sensor 122 attached near the heat exchanger 121. The temperature control device 302 shown in Fig. 7 adjusts the temperature of each heat exchanger 121 to a preset temperature based on the temperature measured by the temperature sensor 122. During the analysis process, the temperature of the heat exchanger 121 is set low, that is, the heat exchanger 121 is used as a cooler, and the inside of the reagent cooler 1 is cooled. At this time, the inner wall 103 is directly cooled by the heat exchanger 121 attached to the outside of the inner wall 103. As described later, cooling is also performed using a pipe 132 during cooling.

[0056] On the other hand, in the drying process, the inner wall 103 is heated. At this time, the temperature of the heat exchanger 121 is set high, and the heated inner wall 103 heats the inner wall 103 of the reagent cooler 1. That is, the cooling and heating of the inner wall 103 can be switched by changing the set temperature of the heat exchanger 121 in advance according to the purpose. In other words, the heat exchanger 121 used as a cooler in the analysis process is diverted as a heater when drying the inside of the reagent cooler 1. The heat exchanger 121 is, for example, a Peltier element, which absorbs heat from one side and releases heat from the other side when an electric current is applied. Also, as described later, in the drying process, the pipe 132 is heated by the heat exchanger 121, and hot air is emitted from the pipe 132.

[0057] That is, during the sample analysis process, the heat exchanger 121 absorbs the internal heat of the reagent refrigerator 1 and dissipates the heat to the outside of the reagent refrigerator 1, so that the heat exchanger 121 functions as a cooler that cools the inside of the reagent refrigerator 1. Then, during the drying process, the heat exchanger 121 absorbs the heat outside the reagent refrigerator 1 and dissipates the heat to the inside of the reagent refrigerator 1, so that the heat exchanger 121 functions as a heater that heats the inside of the reagent refrigerator 1. In each heat exchanger 121, as shown in FIG. 7, a heat sink 123 is attached to the side opposite to the side of the inner wall 103, so that an expanded heat transfer surface is formed. In addition, a fan 124 is formed near the heat sink 123. During cooling, the heat of the heat sink 123 is exhausted to the duct 125 by forced convection by the fan 124. The duct 125 is a flow path leading to the outside of the automatic analyzer 200.

[0058] (Pipe 132) As described above, the pipe 132 penetrates the heat insulating material 141 and the inner wall 103 of the reagent refrigerator 1, and is introduced from the outside of the reagent refrigerator 1 to the inside of the reagent refrigerator 1 (see FIG. 7). Then, as described above, the pipe 132 is arranged in a substantially circular shape along the bottom surface of the inner wall 103 of the reagent refrigerator 1 (see FIG. 8). As shown in FIG. 8, the pipe outlet 132a located at the tip of the pipe 132 is formed toward the upper opening 131a which is one end of the drain 131. Also, the pipe outlet 132a may be arranged so that the vertical projection of the pipe outlet 132a is within the range of the upper opening 131a of the drain 131. In other words, the pipe outlet 132a may be located above the upper opening 131a of the drain 131.

[0059] As shown in FIG. 7 and FIG. 8, outside air is sent into the pipe 132 by the blower 133. The outside air introduced into the inside of the reagent cooler 1 flows through the inside of the pipe 132 and is blown out from the pipe outlet 132a. During cooling in the analysis process, the heat exchanger 121 is used as a cooler, so the outside air flowing through the inside of the pipe 132 is cooled by each of the heat exchangers 121 (121a to 121d). Specifically, the outside air flowing through the pipe 132 is cooled through the inner wall 103 cooled by each of the heat exchangers 121. Therefore, cold air is blown out from the pipe outlet 132a. At that time, water droplets due to condensation generated inside the pipe 132 during cooling, which will be described later, are also drained from the pipe outlet 132a. As described above, the drained water droplets are discharged to the outside of the reagent cooler 1 through the drain 131 (see FIG. 7). The inside of the reagent cooler 1 is cooled by the cold air blown out from the pipe 132 and the inner wall 103 cooled by the heat exchanger 121 .

[0060] The drying of the reagent cooler 1 using the pipe 132 in the drying process will be described later. In this way, the pipe 132 is attached directly to the bottom surface of the inner wall 103 and is cooled during the analysis process and heated during the drying process.

[0061] For example, a diaphragm pump, a centrifugal fan, a piezoelectric fan, or the like can be used as the blower 133. Also, in order to prevent dust and bacteria from entering the inside of the reagent cooler 1, it is desirable to provide a filter (not shown) or the like before introducing outside air. The filter is generally provided in the blower 133.

[0062] (Drying by pipe 132) The drying process in the third embodiment will be described. In the drying process, the outside air introduced into the pipe 132 by the blower 133 flows through the inside of the pipe 132 laid on the bottom surface of the inner wall 103 (dotted line A40 in FIG. 8). Then, the outside air is sufficiently heated by each heat exchanger 121 (21a to 121d) when passing through the pipe 132 (see FIG. 8). Specifically, the outside air flowing through the pipe 132 is heated through the inner wall 103 heated by each heat exchanger 121. Therefore, the outside air discharged from the pipe outlet 132a becomes hot air. That is, dry air with a lowered relative humidity is discharged from the pipe outlet 132a into the gap space S1 (see FIG. 2). The hot air discharged into the gap space S1 (see FIG. 2) forms an air flow circulating in the circumferential direction in the gap space S1 (see FIG. 2) (arrow A41 in FIG. 7 and FIG. 8). The inside of the reagent cooler 1 is heated by the hot air blown out from the pipe 132 and the inner wall 103 heated by the heat exchanger 121 .

[0063] The hot air (arrow A41 in FIGS. 7 and 8) flowing in the gap space S1 (see FIG. 2) heats the entire bottom surface of the reagent disk 101 and the bottom surface of the inner wall 103 while diffusing in the circumferential direction. This allows the lower part of the reagent refrigerator 1 to be heated uniformly. The heated air has a low density and is lighter, so an air current (upward air current) that rises in the vertical direction of the inner wall 103 is formed (arrows A42 and A45 in FIG. 7). This upward air current allows the side of the reagent refrigerator 1 to be heated uniformly. As shown in FIG. 7, a part of the upward air current indicated by the arrow A42 passes through the opening hole 104 that opens in the bottom surface of the reagent container holder 102 and reaches the upper part of the reagent refrigerator 1 via the reagent container holder 102. Alternatively, the remaining part of the upward air current indicated by the arrow A42 passes through the gap space S2 (see FIG. 2) and reaches the upper part of the reagent refrigerator 1. The hot air that reaches the top of the reagent refrigerator 1 flows along the second surface 101B that is aligned with the horizontal direction of the reagent disk 101 (arrow A43 in FIG. 7). The hot air flowing along the second surface 101B (arrow A43 in FIG. 7) circulates in the circumferential direction of the reagent refrigerator 1 while being diffused in the gap space S3 (see FIG. 2). This allows the entire top surface of the reagent disk 101 and the bottom surface of the lid 150 to be heated uniformly. This makes it possible to heat the top of the reagent refrigerator 1 uniformly. The hot air indicated by arrow A45 passes around the central axis 171, and then passes through the gap between the members to join the hot air indicated by arrow A43.

[0064] Thereafter, the hot air (arrow A43 in FIG. 7) flowing along the second surface 101B is discharged to the outside (arrow A44 in FIG. 7) from the reagent suction hole 153. In addition, of the hot air indicated by arrow A42, the hot air that does not merge with the hot air indicated by arrow A43 is also discharged to the outside from the reagent suction hole 153 (arrow A44 in FIG. 7).

[0065] In addition to the heating by the hot air discharged from the pipe 132, the bottom of the inner wall 103 is directly heated by the heat exchanger 121 as described above, thereby drying the droplets.

[0066] Note that the longer the flow path of pipe 132, the higher the pressure loss. For this reason, it is desirable that blower 133 that introduces outside air into pipe 132 is capable of blowing air even in an environment where the pressure loss of pipe 132 is high. In addition, it is desirable that the flow rate of outside air introduced into reagent refrigerator 1 is equal to or greater than the amount of outside air that infiltrates into reagent refrigerator 1 through reagent suction hole 153 during the analysis process, or equal to or greater than the amount of outside air that leaks out of reagent refrigerator 1 through reagent suction hole 153. In other words, blower 133 has an air volume that allows the introduced outside air to pass through pipe 132 and then escape to the outside through reagent suction hole 153.

[0067] However, in order to reduce the amount of heat lost by introducing outside air and to increase the heat exchange efficiency, it is desirable not to increase the amount of outside air introduced more than necessary. In other words, if the flow rate of outside air circulating inside the pipe 132 is large, the efficiency of heat exchange (cooling, heating) by the heat exchanger 121 decreases. Therefore, the flow rate of the blower 133 is adjusted so that the flow rate is such that the heat exchange by the heat exchanger 121 can be appropriately performed.

[0068] The cross-sectional shape of the pipe 132 can be changed, and can be, for example, rectangular, circular, or trapezoidal. The pipe 132 does not need to be one. For example, a plurality of pipes 132 may be installed, or a plurality of pipe outlets 132a may exist for one pipe 132. The presence of a plurality of pipe outlets 132a for one pipe 132 means that one pipe 132 branches midway to provide a plurality of pipe outlets 132a. The material of the pipe 132 is preferably a material with high thermal conductivity, such as copper or aluminum. In this way, the efficiency of cooling or heating the pipe 132 by the heat exchanger 121 via the inner wall 103 can be improved.

[0069] As described above, the upper part, the side part and the lower part of the reagent cooler 1 are uniformly heated, so that the relative humidity inside the reagent cooler 1 can be reduced. This allows the inside of the reagent cooler 1 to be dried in a short time. As a result, it is possible to efficiently remove droplets due to condensation that has occurred. In particular, in the third embodiment, a configuration used as a cooling system in the analysis process is used as a heating system in the drying process. This allows the inside of the reagent cooler 1 to be dried without providing a separate device for drying. Note that it is desirable that the outside air introduced by the blower 133 is dry air with as low a humidity as possible. In addition, the drying can be further promoted by setting the set temperature of the heat exchanger 121 to a high temperature. Furthermore, in the third embodiment, the inside of the reagent cooler 1 can be dried without disassembling the automatic analyzer 200, particularly during long-term storage during field maintenance, and without introducing hot air from a heating device provided outside the reagent cooler 1 as in the first and second embodiments.

[0070] The hot air from the heat exchanger 121 is preferably at a temperature higher than the temperature inside the reagent refrigerator 1. The hot air is preferably at a dew point temperature that does not cause condensation even when cooled by being introduced into the reagent refrigerator 1, but any hot air that can dry the inside of the reagent refrigerator 1 will suffice.

[0071] <Fourth embodiment> Next, a fourth embodiment will be described with reference to FIG. Fig. 9 is a horizontal cross-sectional view of the reagent refrigerator 1 in the fourth embodiment, showing the flow of hot air in the third embodiment. Fig. 9 is a view corresponding to the cross section BB in Fig. 7. In Fig. 9, the same components as in Fig. 8 are given the same reference numerals, and only the parts that differ from the reagent refrigerator 1 in the third embodiment will be described, and the description of the overlapping parts will be omitted. In the fourth embodiment, the pipe outlet 132a on the most downstream side of the pipe 132 is located near the heat exchanger 121a in the reagent refrigerator 1. Note that, although the pipe outlet 132a is located near the heat exchanger 121a in the example shown in Fig. 9, the pipe outlet 132a may be located near any of the heat exchangers 121b to 121d.

[0072] In the analysis process, the temperature of the heat exchanger 121a is set lower than that of the other heat exchangers 121b to 121d. In the analysis process, the outside air (cold air) discharged from the pipe outlet 132a passes through the upper part of the heat exchanger 121a first. As a result, the outside air (cold air) discharged from the pipe outlet 132a is cooled more than the surface of the inner wall 103 above the other heat exchangers 121b to 121d and is diffused inside the reagent refrigerator 1. In other words, the surface temperature of the inner wall 103 and the air located above the heat exchanger 121a are lower than the surface temperature of the inner wall 103 and the air located above the heat exchangers 121b to 121d. As a result, it is possible to limit the area where condensation occurs to the periphery of the upper part of the heat exchanger 121a and narrow it.

[0073] On the other hand, in the drying process, as in the third embodiment, the outside air introduced into the pipe 132 by the blower 133 (see FIG. 7) passes over the heat exchangers 121b-121d and is discharged as hot air from the pipe outlet 132a. In this case, the heat exchangers 121a-121d are heated to the same degree. As described above, condensation is concentrated on the inner wall 103 around the location where the heat exchanger 121a is installed. Therefore, the condensation generated around the heat exchanger 121a can be actively dried by the hot air (arrow A51) discharged from the pipe outlet 132a and the heat of the inner wall 103 by the heat exchanger 121a. The hot air (arrow A51) discharged from the pipe outlet 132a becomes an airflow similar to that in the third embodiment and circulates inside the reagent cooler 1. In addition, by heating the inner wall 103 with the heat exchanger 121a, droplets of condensation occurring on the inner wall 103 can also be dried.

[0074] Furthermore, in the drying process, by setting the temperature of heat exchanger 121a higher than those of the other heat exchangers 121b to 121d, droplets can be removed by drying more efficiently in a shorter time. Note that, according to the fourth embodiment, similar to the third embodiment, the inside of reagent cooler 1 can be dried without disassembling automatic analyzer 200 during long-term storage for field maintenance and without introducing hot air from an external heater.

[0075] In the fourth embodiment, the same effect can be obtained by making the distance in the thickness direction between the periphery of the mounting surface of the heat exchanger 121a and the bottom surface of the inner wall 103 shorter than the installation portions of the other heat exchangers 121b to 121d. That is, the heat exchanger 121a may be installed closer to the bottom surface of the inner wall 103 than the other heat exchangers 121b to 121d. In this way, the same effect as the structure shown in FIG. 9 can be obtained in the analysis process even if the heat exchanger 121a is not set to a lower temperature than the other heat exchangers 121b to 121d.

[0076] In the fourth embodiment, a cover may be attached to the inner wall 103 from the pipe outlet 132a to the upper periphery of the heat exchanger 121a. With such a configuration, the area where condensation occurs can be further limited, and liquid droplets can be efficiently removed in the drying process.

[0077] In the third and fourth embodiments, the inner wall 103 may be inclined toward the upper opening 131a. In this way, droplets generated by condensation during cooling can flow toward the drain 131, and therefore the droplets can be efficiently removed.

[0078] <Hardware configuration diagram of the control device 301> 10 is a diagram showing a hardware configuration of the control device 301 used in the first to fourth embodiments, with reference to FIG. The control device 301 is composed of a PC (Personal Computer) or the like, and has a memory 311, a CPU (Central Processing Unit) 312, and a storage device 313 composed of a HD (Hard Disk), an SSD (Solid State Drive), or the like. The control device 301 further has an input device 314 such as a keyboard or a mouse, an output device 315 such as a display, and a communication device 316. The communication device 316 receives temperature information of the reagent refrigerator 1 (see FIG. 1) from the temperature control device 302 (see FIG. 1), and transmits control signals for controlling each part of the automatic analyzer 200.

[0079] A program is stored in the storage device 313. This program is loaded into the memory 311 and executed by the CPU 312, thereby realizing functions for controlling each part of the automatic analyzer 200 and for calculating the detection results by the automatic analyzer 200.

[0080] The present invention is not limited to the above-described embodiment, and includes various modified examples. For example, the above-described embodiment has been described in detail to clearly explain the present invention, and is not necessarily limited to all of the configurations described. In addition, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. In addition, it is possible to add, delete, or replace a part of the configuration of each embodiment with another configuration.

[0081] Also, the above-mentioned configurations, functions, units, storage device 313, etc. may be realized in hardware by designing some or all of them as an integrated circuit, for example. Also, as shown in Fig. 10, the above-mentioned configurations, functions, etc. may be realized in software by a processor such as CPU 312 interpreting and executing a program that realizes each function. Information such as the program, table, file, etc. that realizes each function can be stored in the HD, or in a recording device such as memory 311 or SSD, or in a recording medium such as an IC (Integrated Circuit) card, SD (Secure Digital) card, or DVD (Digital Versatile Disc). In addition, in each embodiment, the control lines and information lines are shown as those considered necessary for the explanation, and not all control lines and information lines in the product are shown. In reality, it can be considered that almost all components are connected to each other. [Explanation of symbols]

[0082] 1 Reagent cooler 101 Reagent Disk 101A 1st side (1st side) 102B Side 2 (Second Side) 102 Reagent container holder 103 Inner wall 104 Opening hole (hole) 105 Recess 106 Partition 121 Heat exchanger 121a heat exchanger (first heat exchanger) 121b to 121d Heat exchanger (second heat exchanger) 132 Pipe 132a Pipe outlet (end) 141 Thermal insulation materials (thermal insulation structure) 150 Lid (insulated structure, first lid) 151 Opening / Closing Door (Opening) 152 Opening and closing lid (insulated structure) 153 Reagent suction hole 160 Hot air blower lid (second lid) 161 Through hole 200 Automatic analyzer 202 Reagent dispensing section 202a Reagent dispensing nozzle (reagent aspirating nozzle) 301 Control device 302 Temperature Control Device A1 Arrow (Hot air introduced into the reagent cooler at a specified angle) A2, A3, A21-A24, A31, A32, A41-A45, A51 Arrows (Hot air circulating inside the reagent cooler) S1 Gap space (a predetermined distance, the space formed between the bottom surface of the inner wall and the reagent disc) S2 gap space (predetermined distance) S3: Crevice space (space formed between the second surface and the first lid) S4 Clearance space (predetermined distance)

Claims

1. A method for drying a reagent cooler having a thermal insulation structure and storing a plurality of reagent containers containing reagents while keeping them cool, comprising the steps of: The reagent cooler comprises: a reagent disk forming a reagent container holding portion which is a space for holding the reagent container; an inner wall disposed outside the reagent disk at a predetermined distance from the reagent disk; a first lid for closing the reagent disk and an upper portion of the inner wall; A heat exchanger capable of switching between cooling and heating; having The reagent disk comprises: a hole is provided in a bottom surface of the reagent container holder, and a space is formed between the hole and the first lid; The first lid includes: a reagent suction hole into which a reagent suction nozzle for suctioning the reagent is inserted; an opening / closing cover for opening and closing an opening for inserting and removing the reagent container in the reagent cooler; having a plurality of the heat exchangers are provided on a bottom surface of the inner wall on an opposite side to the reagent disk; a pipe through which outside air circulates is installed inside a space formed between a bottom surface of the inner wall and the reagent disk; The pipe is installed so as to pass above the heat exchanger, an end portion of the pipe through which the outside air is discharged is provided inside a space formed between a bottom surface of the inner wall and the reagent disk; When the opening is closed, heating is performed by the heat exchanger, so that hot air having a temperature higher than the temperature inside the reagent refrigerator flows so as to circulate inside the reagent refrigerator. A method for drying a reagent cooler.

2. A method for drying a reagent cooler having a thermal insulation structure and storing a plurality of reagent containers containing reagents while keeping them cool, comprising the steps of: The reagent cooler comprises: a reagent disk forming a reagent container holding portion which is a space for holding the reagent container; an inner wall disposed outside the reagent disk at a predetermined distance from the reagent disk; a first lid for closing the reagent disk and an upper portion of the inner wall; A heat exchanger capable of switching between cooling and heating; having The reagent disk comprises: a hole is provided in a bottom surface of the reagent container holder, and a space is formed between the hole and the first lid; The first lid includes: a reagent suction hole into which a reagent suction nozzle for suctioning the reagent is inserted; an opening / closing cover for opening and closing an opening for inserting and removing the reagent container in the reagent cooler; having a plurality of the heat exchangers are provided on a bottom surface of the inner wall on an opposite side to the reagent disk; a pipe through which outside air circulates is installed inside a space formed between a bottom surface of the inner wall and the reagent disk; The pipe is installed so as to pass above all of the plurality of heat exchangers, an end portion of the pipe through which the outside air is discharged is provided inside a space formed between a bottom surface of the inner wall and the reagent disk; When the opening is closed, heating is performed by the heat exchanger, so that hot air having a temperature higher than the temperature inside the reagent refrigerator flows so as to circulate inside the reagent refrigerator. A method for drying a reagent cooler.

3. A method for drying a reagent cooler having a thermal insulation structure and storing a plurality of reagent containers containing reagents while keeping them cool, comprising the steps of: The reagent cooler comprises: a reagent disk forming a reagent container holding portion which is a space for holding the reagent container; an inner wall disposed outside the reagent disk at a predetermined distance from the reagent disk; a first lid for closing the reagent disk and an upper portion of the inner wall; A heat exchanger capable of switching between cooling and heating; having The reagent disk comprises: a hole is provided in a bottom surface of the reagent container holder, and a space is formed between the hole and the first lid; The first lid includes: a reagent suction hole into which a reagent suction nozzle for suctioning the reagent is inserted; an opening / closing cover for opening and closing an opening for inserting and removing the reagent container in the reagent cooler; having a plurality of the heat exchangers are provided on a bottom surface of the inner wall on an opposite side to the reagent disk; a pipe through which outside air circulates is installed inside a space formed between a bottom surface of the inner wall and the reagent disk; The plurality of heat exchangers include a first heat exchanger and a second heat exchanger that is a heat exchanger other than the first heat exchanger, the first heat exchanger is set at a lower temperature than the second heat exchanger; The pipe is installed so as to pass over the entire upper portion of the second heat exchanger, and the end portion from which the outside air is discharged is installed so as not to pass over the upper portion of the first heat exchanger; an end portion of the pipe through which the outside air is discharged is provided inside a space formed between a bottom surface of the inner wall and the reagent disk; With the opening closed, heating is performed by the heat exchanger, and the end of the pipe from which the outside air is discharged is disposed in the vicinity of the second heat exchanger, so that hot air having a temperature higher than that inside the reagent refrigerator flows so as to circulate inside the reagent refrigerator. A method for drying a reagent cooler.

4. The reagent container holders are separated from each other by a partition, A recess is provided in the upper portion of the partition.

4. The method for drying a reagent cooler according to claim 1, wherein the drying step is performed by drying the reagent cooler.

5. The outside air is blown into the pipe by a blower.

4. The method for drying a reagent cooler according to claim 1, wherein the drying step is performed by drying the reagent cooler.

6. The heat exchanger includes: Used as a cooler in analytical processes, When drying the inside of the reagent cooler, it can be used as a heater.

4. The method for drying a reagent cooler according to claim 1, wherein the drying step is performed by drying the reagent cooler.

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