JPH04127697U - Condensation prevention mechanism near the entrance of the thermostatic chamber - Google Patents

Abstract

(57) [Summary] [Purpose] By placing the nozzle 6 between the thermostatic chamber 1 and the shutter 2 and blowing out dry air from the nozzle 6, the outside air freezes near the entrance of the rail 3 even when the shutter 2 is opened or closed. Try not to. [Structure] In a thermostat that forms an air curtain with high-temperature dry air 11 blown out from nozzles 5 before and after the shutter 2, a nozzle is installed between the thermostatic oven 1 and the shutter 2 on the rail 3 from inside the thermostatic oven 1 to outside the thermostatic oven 1. A plurality of diagonal holes 6A are formed in the nozzle 6 from the inside of the thermostatic oven 1 to the outside of the thermostatic oven 1, and dry air 12 is blown out from the nozzle 6.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is about a dew condensation prevention mechanism near the inlet of a thermostatic oven.

0002

[Conventional technology]

Next, the configuration of the shutter condensation prevention mechanism of a thermostat according to the conventional technology will be explained with reference to Figure 2. I will clarify. In Figure 2, 1 is a constant temperature chamber, 2 is a shutter, 3 and 4 are rails, 5 is a nozzle, 1 0 is a component such as an IC. The part 10 slides on the rail 4 to the shutter 2, When the shutter 2 is opened, it slides on the rail 3 and enters the thermostatic chamber 1. Rail 3 and Shi In order to reduce the temperature difference between shutter 2 and between shutter 2 and rail 4, High temperature dry air 11 is blown onto the shutter 2 part, and the shutter 2 part is heated with an air car. Cover it as a tent to prevent condensation and freezing on the shutter 2 part. In addition, conventional technology There are Utility Model Application Publication No. 1-61673 and Utility Model Application Publication No. 2-16984. Temperature inside constant temperature bath 1 is adjusted from +150°C to -55°C for temperature testing of part 10.

0003

[Problem that the idea aims to solve]

In Fig. 2, when the shutter 2 is opened and the component 10 is placed in the thermostatic oven 1, Dry air 11 alone cannot completely block outside air, and moisture-laden outside air leaks. Enter from the entrance of Room 3. When performing a low temperature test in thermostatic chamber 1, close to the entrance of rail 3. Freezing of the outside air occurs, making it impossible to transport the component 10 into the thermostatic chamber 1. child The idea behind this is that between the temperature chamber 1 and the shutter 2 there is A nozzle is placed on the rail 3, and the nozzle is directed from inside the thermostatic chamber 1 to outside the thermostatic chamber 1. By drilling multiple diagonal holes in the nozzle and blowing out dry air, the The temperature chamber is such that the outside air does not freeze near the inlet of rail 3 even when switch 2 is opened or closed. The purpose is to provide a mechanism to prevent condensation near the entrance.

0004

[Means to solve the problem]

In order to achieve this purpose, in this invention, a shutter 2 is installed at the entrance of the thermostatic chamber 1. When the shutter 2 is opened, the parts 10 are carried into the thermostatic chamber 1 by the rail 3, An air curtain is created by the high temperature dry air 11 blown out from the nozzle 5 before and after the shutter 2. In the thermostatic chamber that forms the A nozzle 6 is placed on the rail 3 over the outside of the temperature chamber 1, and the nozzle 6 is connected to the inside of the constant temperature chamber 1. A plurality of diagonal holes 6A are made from the outside of the thermostatic chamber 1, and dry air 12 is introduced from the nozzle 6. Speech out.

[0005]

[Effect]

Next, the configuration of the dew condensation prevention mechanism near the inlet of the thermostatic chamber based on this invention will be explained using Figure 1. I will clarify. 6 in FIG. 1 is a nozzle, and the other parts are the same as in FIG. 2. Nozzle 6 is Between the constant temperature chamber 1 and the shutter 2, there is a rail 3 on the rail extending from inside the constant temperature chamber 1 to outside the constant temperature chamber 1. The nozzle 6 has a plurality of diagonal holes 6 extending from the inside of the constant temperature chamber 1 to the outside of the constant temperature chamber 1. A can be opened. From the nozzle 6, dry air 12 is supplied from outside the thermostatic chamber 1, It is discharged to the outside of the constant temperature chamber 1. The flow rate of the drying air 12 is adjusted according to the shape of the part 10. to prevent the parts 10 from running backwards on the rails 3 and 4.

[0006]

[Effect of the idea]

According to this idea, between the thermostatic oven and the shutter there is a gap between the thermostatic oven and the outside of the thermostatic oven. A nozzle is placed on the rail, and the nozzle has a direction from inside the thermostatic chamber to the outside of the thermostatic chamber 1. Multiple diagonal holes are made and dry air is blown out from these nozzles, making it possible to close the shutter. Even when the rail is opened or closed, the outside air does not freeze near the rail inlet, allowing parts to be smoothly placed in a constant temperature chamber. It can be carried inside.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a dew condensation prevention mechanism near the inlet of a constant temperature oven according to this invention.

FIG. 2 is a configuration diagram of a conventional thermostat shutter condensation prevention mechanism.

[Explanation of symbols]

1 Constant temperature bath 2 Shutter 3 rail 4 rail 5 nozzle 6 nozzles 6A hole 11 High temperature dry air 12 Dry air

Claims (1)

[Scope of utility model registration request] [Claim 1] A shutter (2) is provided at the entrance of the thermostatic oven (1), and when the shutter (2) is opened, the parts (10) are carried into the thermostatic oven (1) by the rail (3), and the shutter ( 2) In a thermostatic chamber in which an air curtain is formed by high-temperature dry air (11) blown from the first nozzle (5) before and after A second nozzle (6) is placed on the rail (3) extending outside the thermostatic oven (1), and the second nozzle (6) has multiple nozzles extending from inside the thermostatic oven (1) to the outside of the thermostatic oven (1). A dew condensation prevention mechanism near the entrance of a thermostatic chamber, characterized by opening a diagonal hole (6A) in the hole and blowing out dry air (12) from a second nozzle (6).