JPH0175774U - - Google Patents
Info
- Publication number
- JPH0175774U JPH0175774U JP1987170765U JP17076587U JPH0175774U JP H0175774 U JPH0175774 U JP H0175774U JP 1987170765 U JP1987170765 U JP 1987170765U JP 17076587 U JP17076587 U JP 17076587U JP H0175774 U JPH0175774 U JP H0175774U
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- low
- temperature
- temperature constant
- temperature chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007664 blowing Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Devices For Use In Laboratory Experiments (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Description
第１図は本考案の一実施例に係る低温恒温槽内
におけるセンサへの霜付き防止装置近傍の斜視図
、第２図は第１図におけるセンサの横断面図、第
３図は第１図における低温恒温槽内の平面図、第
４図は第１図におけるセンサの検出感度特性図、
第５図は従来の低温恒温槽内の平面図、第６図は
常温におけるセンサの検出感度特性図、第７図は
センサ表面に霜が付着した場合のセンサの検出感
度特性図、第８図はセンサとワークとの位置関係
を示した平面図、である。
３１……低温恒温槽、３２……ワーク搬入口、
３３……ワーク搬出口、３４……ワーク（物体）
、４０，４１……センサとしての光電スイツチ、
４２……ノズル、４５……電気ヒータ。
Fig. 1 is a perspective view of the vicinity of a frost prevention device for a sensor in a low-temperature constant temperature chamber according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of the sensor in Fig. 1, and Fig. 3 is a view similar to that shown in Fig. 1. Figure 4 is a diagram of the detection sensitivity characteristics of the sensor in Figure 1.
Figure 5 is a plan view of the inside of a conventional low-temperature constant temperature chamber, Figure 6 is a diagram of the sensor's detection sensitivity characteristics at room temperature, Figure 7 is a diagram of the sensor's detection sensitivity characteristics when frost adheres to the sensor surface, and Figure 8 is a diagram of the sensor's detection sensitivity characteristics when frost adheres to the sensor surface. is a plan view showing the positional relationship between the sensor and the workpiece. 31...Low temperature constant temperature chamber, 32...Work loading port,
33... Workpiece unloading port, 34... Workpiece (object)
, 40, 41... photoelectric switch as a sensor,
42... Nozzle, 45... Electric heater.
Claims (1)
する物体を検出するセンサの近傍に、乾燥した気
体を前記センサの表面に向けて吹きつけるノズル
を設けたことを特徴とする低温恒温槽内における
センサへの霜付き防止装置。 A low-temperature constant-temperature chamber, characterized in that a nozzle for blowing dry gas toward the surface of the sensor is provided in the vicinity of a sensor that is placed in the low-temperature constant-temperature chamber and detects an object passing through the low-temperature constant-temperature chamber. Anti-frost device for sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987170765U JPH0175774U (en) | 1987-11-10 | 1987-11-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987170765U JPH0175774U (en) | 1987-11-10 | 1987-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0175774U true JPH0175774U (en) | 1989-05-23 |
Family
ID=31461995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987170765U Pending JPH0175774U (en) | 1987-11-10 | 1987-11-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0175774U (en) |
-
1987
- 1987-11-10 JP JP1987170765U patent/JPH0175774U/ja active Pending