JP2006029650A - Thermostat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thermostat capable of preventing dew condensation and the freezing of a door, the upper face, the lower face, and the side face of the thermostat. <P>SOLUTION: Air taken in by a fan 115 from the outside of the thermostat 1 passes through an outside air feeding passage 114 provided between a thermal insulation material 106 in an upper part of a main body 100 and an external plate 107 and passes through an outside air exhaust port 112 and an outside air introducing port 205. The air passes through a door outside air feeding passage 206 provided in the door 200. Air passing through the door outside air feeding passage 206 passes through an outside air exhaust port 207 provided in a lower part of the door, passes through an outside air feeding passage 128, and is exhausted to the outside from an outside air exhaust port 129. An outside air feeding passage is also provided at the side face of the thermostat 1 to let air pass. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a thermostatic bath that prevents condensation and freezing of an external surface.

In the thermostatic chamber disclosed in Patent Document 1, a part of the temperature-controlled room is a glass window, and in order to prevent condensation and freezing on the surface of the glass window, a part of the temperature-controlled room air is blown out to the outer surface of the glass window. A duct is provided.
JP-A-8-121938

  According to the method disclosed in Patent Document 1, since air in the temperature-controlled room is ejected, the amount of outside air that has been ejected must be taken into the temperature-controlled room. For this reason, there exists a problem that the temperature maintenance efficiency in a temperature-controlled room worsens.

The constant temperature bath of the invention of claim 1 includes a housing, a heat insulating material that forms a thermostatic chamber in the housing, a closing member that closes an opening provided for loading and unloading the specimen into the thermostatic chamber, and a heat insulating material. A housing outside air blowing passage provided between the outer surface of the housing and the housing, and an outside air introduction / discharge device that introduces and exhausts outside air into the housing outside air blowing passage.
According to a second aspect of the present invention, in the thermostatic bath according to the first aspect, the closing member outside air blowing passage is provided in the closing member, and the closing member outside air blowing passage is provided by the outside air introduction / discharge device through the housing outside air blowing passage. A feature is that the outside air is introduced and exhausted.
The constant temperature bath of the invention of claim 3 includes a housing, a heat insulating material that forms a thermostatic chamber in the housing, a closing member that closes an opening provided to carry the specimen into and out of the constant temperature chamber, And an outside air introduction / discharge device for introducing outside air into the closing member outside air blowing passage and exhausting the outside air.
According to a fourth aspect of the present invention, in the thermostat according to any one of the first to third aspects, the closing member is provided with a double-structured observation window for observing the inside of the temperature-controlled room. The observation window constitutes a part of the side wall of the closing member outside air blowing passage.
According to a fifth aspect of the present invention, in the thermostat according to any one of the first to fourth aspects, the closing member is an open / close door provided in the casing so as to be openable and closable.

  ADVANTAGE OF THE INVENTION According to this invention, dew condensation and freezing of obstruction | occlusion members, such as a door provided in a thermostat, can be prevented, without reducing the temperature maintenance efficiency in a thermostat. Further, it is possible to prevent dew condensation and freezing on the upper surface, the lower surface, and the side surface of the thermostatic chamber as well as the closing member such as the door of the thermostatic chamber.

The structure of the thermostat according to the embodiment of the present invention will be described with reference to FIGS.
In FIG. 1, the thermostatic chamber 1 includes a main body 100 provided with a thermostatic chamber 105 in which the specimen is processed as shown in FIG. 2, and a main body 100 for loading and unloading the specimen into the thermostatic chamber 105. It includes a door 200 that can be opened and closed, and a gantry 300 on which the main body 100 is placed. In this embodiment, the temperature-controlled room 105 is maintained in a sub-freezing atmosphere.

Further description will be given with reference to FIGS. FIG. 2 is a front view of the thermostatic chamber 1 with the door 200 removed, and the heat insulating material 106 is indicated by hatching. 3 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 4 is a cross-sectional view taken along line BB in FIG.
As shown in FIGS. 3 and 4, the main body 100 is formed in a cubic shape by the outer plate 107. By arranging the heat insulating material 106 inside the main body 100, a temperature-controlled room 105 is formed at the center of the main body surrounded by the heat insulating material 106, and between the heat insulating material 106 and the outer plate 107, The outside air blowing passages 114 and 128 shown in FIG. 3 and the outside air blowing passages 117 and 118 shown in FIG. 4 are formed.

  As shown in FIG. 3, the outside air passage 114 is an outside air passage for flowing outside air to the upper part of the thermostatic chamber 1, and is formed between the heat insulating material 106 and the outer plate 107 at the upper part of the temperature-controlled room 105. . The outside air blowing passage 114 is provided with an outside air introduction port 104 and an outside air discharge port 112. A fan 115 is provided at the outside air introduction port 104. The outside air blowing passage 128 is an outside air passage for flowing outside air to the lower part of the thermostatic chamber 1, and is formed between the heat insulating material 106 and the outer plate 107 at the lower part of the temperature-controlled room 105. The outside air blowing passage 128 is provided with an outside air introduction port 127 and an outside air discharge port 129.

  As shown in FIG. 4, the outside air passages 117 and 118 are outside air passages for flowing outside air to the left and right sides of the thermostatic chamber 1, and are located between the heat insulating material 106 and the outer plate 107 on the side of the temperature-controlled room 105. Are formed respectively. Outside air blowing passages 117 and 118 are provided with outside air inlets 109 and 111 and outside air outlets 119 and 120, respectively. Fans 121 and 122 are provided at the outside air discharge ports 119 and 120.

  As shown in FIG. 1, the door 200 can be opened and closed by the hinges 101 and 102 in the main body 100. When the lever 103a of the handle 103 is raised, the door 200 is fixed in a closed state. As shown in FIGS. 3 and 4, the door 200 forms a door outside air blowing passage 206 between the door outer plate 202 provided with an observation window 201 a in the center and the heat insulating material 203, and at the center. And a door inner plate 204 provided with an observation window 201b. The door outer plate 202 and the door inner plate 204 are integrally formed. The door outside air blowing passage 206 is provided with an outside air inlet 205 and an outside air outlet 207. The observation windows 201 a and 201 b configured in a double structure in this way constitute a part of the side wall of the door outside air blowing passage 206.

  The outside air introduction port 205 is provided at a position facing the outside air discharge port 112 of the main body 100 when the door 200 is closed. The outside air outlet 207 is provided at a position facing the outside air inlet 127 of the main body 100 when the door 200 is closed. When the door 200 is closed, the seal chamber 125 is interposed between the door 200 and the heat insulating material 106 to seal the temperature-controlled room 105. When the door 200 is closed, the seal portion 108 is also interposed between the outside air discharge port 112 and the outside air introduction port 205, and the seal portion 126 is also provided between the outside air discharge port 207 and the outside air introduction port 127. By interposing, leakage of outside air flowing from the outside air outlet 112 to the door outside air blowing passage 206 and from the outside air outlet 207 to the outside air blowing passage 128 is prevented.

The dew condensation preventing action in the thermostatic chamber 1 configured as described above will be described in detail below.
(1) Condensation prevention of the upper surface and lower surface of the thermostat 1 and the door 200 It demonstrates with reference to FIG. The air taken into the outside air blowing passage 114 by the fan 115 flows as shown by an arrow C in the figure, and flows into the door outside air blowing passage 206 from the outside air discharge port 112 of the outside air blowing passage 114 via the outside air introduction port 205. . The outside air flowing into the door outside air blowing passage 206 flows downward as indicated by arrows D and E, and further, as indicated by arrow G, from the outside air discharge port 207 of the door outside air blowing passage 206 through the outside air introduction port 127. It flows into the outside air passage 128. The outside air that has flowed into the outside air blowing passage 128 as indicated by an arrow G further flows as indicated by arrows H and I, and is discharged to the outside of the outside air blowing passage 128 via the outside air discharge port 129.

  At this time, the temperature difference between the upper surface outer plate 107 and the outside air of the main body 100 and the temperature difference between the lower surface outer plate 107 and the outside air are reduced by the air passing through the outside air blowing passages 114 and 128. Therefore, no dew condensation or freezing occurs on the upper and lower surfaces of the thermostat 1, that is, the outer plates 107 on the upper and lower faces of the thermostat 1. On the other hand, the surfaces 116 and 130 of the upper and lower heat insulating materials 106 of the main body 100 are warmed by the passing air, and the temperature difference from the outside air is reduced. Further, the moisture adsorbed on the surfaces 116 and 130 is evaporated by the air flow. For this reason, neither condensation nor freezing occurs on the surface 116 of the upper heat insulating material 106 and the surface 130 of the lower heat insulating material 106.

On the other hand, due to the air flowing through the door outside air blowing passage 206 of the door 200, the temperature difference between the door outer plate 202 and the observation window 201a of the door 200 and the outside air becomes small. Therefore, no condensation or freezing occurs on the door outer plate 202 or the observation window 201a. On the other hand, inside the door 200, the surface of the heat insulating material 203, the door inner plate 204, and the observation window 201b of the door 200 is warmed by the air passing through the door outside air blowing passage 206, and the temperature difference from the outside air is reduced. In addition, moisture adsorbed on the surfaces of the heat insulating material 203, the door inner plate 204, and the observation window 201b is evaporated by the flow of air. For this reason, neither condensation nor freezing occurs in the door outside air blowing passage 206 of the door 200.
As described above, condensation and freezing of the door 200 of the thermostatic chamber 1 and the upper and lower surfaces of the thermostatic chamber 1 are prevented.

(2) Prevention of dew condensation on the side surface of the thermostat 1 Next, the prevention of dew condensation on the side surface of the thermostat 1 will be described with reference to FIG.
As shown in FIG. 4, when the fans 121 and 122 are rotated, outside air is sucked into the outside air blowing passages 117 and 118 from the outside air introduction ports 109 and 111 and passes through the outside air blowing passages 117 and 118. The gas is discharged from the exhaust ports 119 and 120 to the outside. Therefore, the temperature difference between the outer plate 107 and the outside air is reduced by the air passing through the outside air blowing passages 117 and 118. Therefore, no condensation or freezing occurs on the side surface of the thermostatic chamber 1, that is, the side surface outer plate 107. On the other hand, the surfaces 123 and 124 of the heat insulating material 106 at the side surface are warmed by the air passing through the outside air blowing passages 117 and 118, and the temperature difference from the outside air becomes small. Further, the moisture adsorbed on the surfaces 123 and 124 of the heat insulating material 106 is evaporated by the flow of air. Therefore, neither condensation nor freezing occurs on the surfaces 123 and 124 of the heat insulating material 106 on the side surface of the main body 100.
As described above, dew condensation and freezing of the upper surface, lower surface, side surface, and door of the thermostat 1 are prevented.

According to such a thermostat 1, the following effects can be obtained.
(1) In order to prevent dew condensation and freezing of the door 200 of the thermostat 1, air inside the thermostat 105 is not used but external air is used, so that the efficiency of maintaining the temperature inside the thermostat 105 does not deteriorate.
(2) Since air outside the thermostatic chamber 1 is used, the amount of air used for preventing condensation and freezing is not limited as compared with the case where air inside the thermostatic chamber 105 is used. Therefore, it is possible to reliably prevent dew condensation and freezing not only on the door 200 of the thermostatic chamber 1 but also on the upper and lower surfaces and side surfaces of the thermostatic chamber 1.
(3) Condensation and freezing of the door 200 as well as the main body 100 are prevented by the air taken from the outside air inlet 104 of the main body 100. Therefore, dew condensation and freezing of the thermostat 1 are efficiently prevented.
(4) Since the air taken in by the fan 115 attached to the main body 100 is made to flow into the door 200, even if the door 200 has no space for attaching the fan, it is possible to prevent condensation or freezing of the door 200. Can do.
(5) Since the surfaces of the heat insulating materials 116, 123, 124, 130 are warmed by the outside air, no condensation or freezing occurs even when the heat insulating materials 116, 123, 124, 130 are lowered by the temperature of the temperature-controlled room 105. Therefore, the thickness of the heat insulating material 106 can be reduced.

  In the above embodiment, the back surface portion of the thermostatic chamber 1 prevents condensation and freezing by increasing the thickness of the heat insulating material 106, but the back surface portion is similar to the top surface, the bottom surface, and the side surface of the thermostatic chamber 1. In addition, it is possible to prevent condensation and freezing by providing an outside air blowing passage and allowing air to flow through the gap.

In the above embodiment, the outside air blowing passage is provided on the upper surface, the lower surface, the side surface, and the door of the thermostatic bath 1 to prevent condensation and freezing of the thermostatic bath 1, but condensation and freezing may occur as appropriate. You may provide an outside air ventilation path in a limited place. For example,
(1) In order to prevent condensation or freezing only on the upper surface of the thermostat 1, the outside air blowing passage 114 may be provided only in the upper part of the thermostat 1.
(2) In order to prevent condensation or freezing only on the side surface of the thermostat 1, the outside air blowing passages 117 and 118 may be provided only on the side surface of the thermostat 1.
(3) When preventing condensation or freezing only on the door 200, the door 200 may be provided only on the outside air blowing passage 206.
(4) In the case where condensation or freezing is prevented only on the upper surface of the thermostatic chamber 1 and the door 200, an outside air blowing passage may be provided limited to the upper portion of the thermostatic chamber 1 and the door 200.
(5) In the case of preventing condensation or freezing of only the side surface of the thermostat 1 and the door, the outside air blowing passage may be provided only on the side surface of the thermostat 1 and the door 200.

Moreover, you may variously modify the thermostat demonstrated above as follows.
(1) Although an openable door is provided on the front surface of the thermostatic chamber to load and unload the specimen, a bolt-fastened closing member may be used instead of the openable door. The closing member is provided with an observation window having a double structure like the open / close door, and an outside air introduction passage is provided inside.
(2) An opening for loading and unloading the specimen may be provided on the upper surface of the thermostatic chamber. In this case, the opening may be closed by an opening / closing door or a bolt fastening type closing member. The closing member and the open / close door are provided with an observation window having a double structure in the same manner as described above, and an outside air introduction passage is provided therein.

The correspondence between the elements of the claims and the embodiments will be described.
The casing described in the claims corresponds to the main body portion 100 formed in a cubic shape by the outer plate 107, and the casing outside air blowing passage corresponds to the outside air blowing passages 114, 117, 118, and 128, and is a blocking member. The outside air blowing passage corresponds to the door outside air blowing passage 206, and the outside air introduction / discharge device corresponds to the fans 115, 121, and 122, respectively.

It is a front view of the thermostat by embodiment of this invention. It is a front view of a main-body part when the door of the thermostat by embodiment of this invention is opened (a seal | sticker part is not shown). It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Temperature chamber 100 Main body part 104 Outside air introduction port 105 Constant temperature room 106 Heat insulating material 107 Outer plate 108, 125 Seal part 114, 117, 118, 128 Outside air ventilation path 115, 121, 122 Fan 200 Door 201 Observation window 206 Door outside air ventilation path

Claims (5)

A housing,
A heat insulating material forming a temperature-controlled room in the housing;
A closing member that closes an opening provided for loading and unloading the specimen into the temperature-controlled room;
A housing outside air blowing passage provided between the outer surface of the heat insulating material and the housing;
A constant temperature bath comprising an outside air introduction / exhaust device for introducing outside air into the outside air blowing passage of the housing and exhausting it. In the thermostat according to claim 1,
A closing member outside air blowing passage is provided in the closing member,
A constant temperature bath configured to introduce and exhaust the outside air to the closing member outside air blowing passage through the outside air blowing passage of the casing by the outside air introduction / discharge device. A housing,
A heat insulating material forming a temperature-controlled room in the housing;
A closing member that closes an opening provided for loading and unloading the specimen into the temperature-controlled room;
A closing member outdoor air passage provided in the closing member;
A constant temperature bath comprising: an outside air introduction / discharge device for introducing outside air into the closing member outside air blowing passage and exhausting the outside air. In the thermostat according to any one of claims 1 to 3,
The closing member is provided with a double-structured observation window for observing the inside of the temperature-controlled room, and the double-structured observation window constitutes a part of the side wall of the closing member outside air blowing passage. A constant temperature bath. In the thermostat according to any one of claims 1 to 4,
The thermostatic bath, wherein the closing member is an open / close door provided in the casing so as to be openable and closable.

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