JPH0640845U - Temperature atmosphere generator - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] A heating element or heat absorbing element is placed in the chamber,
Even if the cooler surface temperature distribution changes,
Provided is a temperature atmosphere generation device which can make the temperature distribution of the atmosphere in the controlled chamber uniform or can bring it into a desired temperature distribution state. [Configuration] The inside of the chamber 1 is virtually divided into a plurality of zones L and R in a direction transverse to the gas circulation direction X, and a portion of a blowout port 21 on the upstream side of each divided zone that blows out the gas whose temperature is adjusted by the air conditioning unit 2 from the chamber 1. Or, the temperature sensors 261 and 262 are respectively arranged in the vicinity of the air conditioner 2 and
A heater 24 is provided at a position upstream of each temperature sensor in the inside.
1, 242 are respectively arranged, and further, the cooler 23 is arranged on the upstream side thereof, and the gas in the chamber is circulated so as to be sucked from the suction port 22 to the air conditioning unit 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a temperature atmosphere generator that generates a predetermined temperature atmosphere.

[0002]

[Prior art]

 Temperature atmosphere generators are used in various fields. Typically, incubators, thermo-hygrostats, and thermal shocks that investigate the heat resistance, cold resistance, and thermal shock resistance of various products and materials, and burn-in and screen various products and their parts. It is used by being incorporated in environmental testing equipment such as equipment. Further, there is also one that is used by being incorporated in a heat treatment device used for heat treatment of an article, heat drying, and the like.

There are various types of such temperature atmosphere generators, and as a typical one, a type often used in environmental test devices can be mentioned. That is, it has a controlled chamber whose temperature is to be controlled, and an air conditioner having a gas outlet and a gas inlet facing the chamber. The gas whose temperature is adjusted by the air conditioner is passed from the outlet to the chamber. It is a temperature atmosphere generating device that obtains a predetermined temperature atmosphere in the chamber by blowing air and circulating the gas in the chamber so as to be sucked into the air conditioning unit from the suction port.

In this type of device, a gas heater and / or a cooler are usually arranged in the air-conditioning unit, and the gas whose temperature is controlled by these is circulated to the controlled chamber by an air supply means such as a blower fan. Be punished. To control the temperature of the atmosphere in the controlled chamber, the temperature detected by one temperature sensor located at or near the gas outlet is taken into the temperature controller, and the heating capacity of the heater and the heating capacity of the heater are controlled based on the instructions from this temperature controller. This is done by controlling the cooling capacity of the cooler.

[0005]

[Problems to be solved by the device]

 However, in this type of temperature atmosphere generating device, the temperature control of the atmosphere in the controlled chamber is performed by capturing only the temperature change of the gas in the vicinity of the one temperature sensor, and therefore has the following problems. A heating element or heat absorbing element is partially arranged in the controlled chamber.Therefore, if a temperature difference occurs at each part of the gas inlet of the air conditioning unit, the temperature distribution in the gas flowing into the heater or cooler will be unsatisfactory. It becomes uniform, and this temperature difference still remains between the various parts of the gas that have passed through the heater and cooler, and this is still blown out from the outlet into the chamber. Only the temperature of the gas is detected and the temperature of the entire gas is controlled based on it.In the end, the temperature difference remains as it is, and the temperature distribution of the gas blown out from the gas outlet becomes uniform forever. However, there is a problem that the temperature distribution of each part in the controlled chamber is disturbed. Also, when a cooler is used, if the temperature distribution on the cooler surface changes due to a change in its cooling capacity, the temperature of each gas passing through the cooler becomes non-uniform due to that effect, and the one sensor However, this non-uniformity cannot be eliminated, and a gas having a non-uniform temperature distribution is discharged as it is to the controlled chamber, so that the temperature distribution is disturbed in the chamber. In addition, the temperature distribution of the atmosphere in the controlled chamber cannot be intentionally made into a desired distribution state including uniformization.

Therefore, the present invention has a controlled chamber whose temperature is to be controlled, and an air conditioner having a gas outlet and a gas inlet facing the chamber, and the gas whose temperature is adjusted by the air conditioner is aforesaid. A controlled atmosphere chamber for generating a predetermined temperature atmosphere in the chamber by circulating the gas in the chamber from the outlet to the air conditioner so that the gas in the chamber is sucked into the air conditioner. Compared to the conventional temperature distribution system of the same type, even if a heating element or a heat absorbing element is placed in the controlled chamber or the cooler surface temperature distribution changes, It is an object of the present invention to provide a temperature atmosphere generating device that can be made uniform or can be made to have a desired temperature distribution state other than intentionally made uniform.

[0007]

[Means for Solving the Problems]

 In the temperature atmosphere generator of the present invention for solving the above-mentioned problems, the inside of the chamber is virtually divided into a plurality of zones in a direction crossing the gas circulation direction, and the temperature is provided at or near the blowout port portion on the upstream side of each divided zone. At least one type of temperature control element, which is controlled based on the temperature detected by each temperature sensor, is arranged at a position upstream of each temperature sensor in the air conditioning unit. To do.

As the temperature control element, a gas heater, a gas cooler (evaporator of refrigerator, etc.) or a combination thereof can be considered. For example, it is conceivable that a gas heating heater is adopted as the temperature control element corresponding to each of the temperature sensors, and an integrated cooler is arranged on the upstream side of these heaters.

[0009]

[Action]

 According to the device of the present invention, the temperature of the gas blown from the air outlet of the air conditioning unit to the controlled chamber can be separately detected at a plurality of locations by a plurality of temperature sensors arranged corresponding to the respective virtual division zones of the chamber. Furthermore, each temperature control unit arranged in the air conditioning unit corresponding to each sensor can be controlled separately based on the detected temperature, whereby the target atmosphere temperature (set temperature) in each divided zone can be obtained. It

When the set temperature in each divided zone is the same, the temperature in the entire atmosphere in the controlled chamber becomes uniform. Further, when the set temperatures are different in the divided zones, an atmosphere having a desired temperature distribution according to the difference in the set temperatures can be obtained in the chamber.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of an embodiment of the present invention, and FIG. 2 is a schematic sectional view of a part thereof. This temperature atmosphere generating device includes a controlled chamber 1 whose temperature is to be controlled, and an air conditioning unit 2 connected to the controlled chamber 1. The outer walls of the chamber 1 and the air conditioning unit 2 are both heat insulating walls, and the chamber 1 can be opened and closed by a heat insulating door 11, and articles can be put in and taken out of the chamber 1. The air conditioner 2 has an air outlet 21 at its upper end and an air inlet 22 at its lower end, and these air vents 21 and 22 face the chamber 1.

Inside the air conditioning unit 2, a cooler 23 is arranged over substantially the entire width direction W, and two air heaters 241 and 242 are arranged above the cooler 23 so as to divide the width direction W into two. A cross flow fan 25 is arranged in front of the air outlet 21 over substantially the entire widthwise direction W, and temperature sensors 261 and 262 are arranged on the left and right sides of the outlet 21, respectively.

The temperature information detected by the sensor 261 is input to the temperature controller 271, the temperature information detected by the sensor 262 is input to the temperature controller 272, and the heater 241 receives the instruction from the controller 271. The heater 242 is controlled and operated based on an instruction from the controller 272. The cooler 23 is an evaporator in a refrigerator (not shown) as a whole, and in this example, the refrigerant is flown during the operation of the apparatus.

In this device, the air whose temperature is controlled in the air conditioning unit 2 is blown out by the operation of the fan 25 from the entire outlet 21 into the chamber 1, and the air in the chamber 1 is introduced from the suction port 22 into the air conditioning unit 2. Circulate in the circulation direction X so as to be sucked. Inside the chamber 1, in the center of the chamber in the direction crossing the air circulation direction X, the left and right zones L obtained by simply dividing the air into two, instead of being actually divided by a partition member or the like, R is assumed, and the sensors 261 and 262 are installed at respective upstream portions of the virtual zones. That is, the sensor 261 is at the upstream position corresponding to the zone L, and the sensor 262 is at the upstream position corresponding to the zone R. The heater 241 is at the upstream position corresponding to the sensor 261, and the heater 242 is at the upstream position corresponding to the sensor 262.

The set temperature of the virtual division zone L in the chamber 1 is set in the temperature controller 271, and the set temperature of the virtual division zone R is set in the temperature controller 272. According to the temperature atmosphere generator described above, the air whose temperature is controlled by the heaters 241, 242 and the cooler 23 is circulated in the chamber 1 by the operation of the fan 25.

The temperature of the air blown from the portion of the air conditioning unit air outlet 21 corresponding to the virtual zone L is detected by the sensor 261 and input to the controller 271. Based on the set temperature of the zone L and the input temperature thereof, the controller 271 controls the operation of the heater 241 in the direction in which the zone L has the set temperature atmosphere. Further, the temperature of the air blown out from the portion corresponding to the virtual zone R is detected by the sensor 262 and input to the controller 272. The controller 272 controls the operation of the heater 242 in the direction of setting the temperature in the zone R based on the temperature set in the zone R and the input temperature.

Now, assuming that the set temperatures in the regulators 271 and 272 are the same, the atmosphere in the chamber 1 is entirely made uniform to the set temperature. In this case, as shown in FIG. 3, for example, the set temperatures in the regulators 271 and 272 are both 20 ° C., the heating element (not shown) is arranged in the virtual zone R in the chamber 1, and the air conditioner intake port is set. Suppose that the temperature of the air sucked from 22 corresponding to the virtual zone L is 21 ° C., the temperature of the air corresponding to the virtual zone R is 25 ° C., and the temperature of each of these air is lowered by 5 ° C. in the cooler 23. The heater 241 raises the temperature of the air passing through it by 4 ° C. to 20 ° C. according to the instruction from the controller 271, and the heater 242 does not raise the temperature of the air passing through it according to the instruction from the controller 272. Leave at 20 ° C. Thus, the temperature of the entire air blown from the blowout port 21 is set to 20 ° C., and the atmospheric temperature in the chamber is made uniform.

Further, as shown in FIG. 4, for example, the set temperatures in the regulators 271 and 272 are both 20 ° C., and the temperature of the air sucked from the air inlet 22 of the air conditioning unit is 21 ° C. Assuming that the cooling capacity of the vessel 23 is non-uniform and, of the air passing through it, the air corresponding to the zone L is lowered by 5 ° C and the air corresponding to the zone R is lowered by 2 ° C, the heater 241 is adjusted by the controller. According to the instruction from 271, the temperature of the air passing therethrough is increased by 4 ° C to 20 ° C, and the heater 242 raises the temperature of the air passing through it by 1 ° C to 20 ° C according to the instruction from the controller 272. . Thus, the temperature of the entire air blown from the blowout port 21 is set to 20 ° C., and the temperature of the atmosphere in the chamber is made uniform.

Further, if the set temperature in the controller 271 is T ° C. and the set temperature in the controller 272 is different from this, for example, T ° C. + 5 ° C., the sensors 261 and 262 respectively detect the temperature independently. Since the regulators 271 and 272 control the heaters 241 and 242 independently of each other, the atmosphere of the virtual zone L is directed to T ° C., the atmosphere of the virtual zone R is directed to T ° C. + 5 ° C., and thus the chamber Within 1, the desired different temperature distribution is obtained.

The temperature atmosphere generator described above can be directly used as a thermostat, or can be used as a thermostat by providing a humidifier below the cooler 23 in the air conditioning unit 2. It is possible. It should be noted that the present invention is not limited to the above-mentioned embodiment, but can be implemented in various modes other than the above. For example, the position and number of temperature detection sensors, the position and number of air heaters corresponding thereto, and the number of temperature controllers are not limited to those in the above-described embodiment. More sensors, heaters and temperature controllers may be employed. If necessary, partition members for rectifying the air flow may be arranged between the temperature control elements such as adjacent heaters, above and below the temperature control elements. Furthermore, it is possible to arrange the coolers separately in correspondence with the virtual zones, or to make it possible to control the cooling capacity of each cooler based on the set temperature of the virtual zone and the temperature detected by the temperature sensor.

[0021]

[Effect of device]

 As described above, according to the present invention, the controlled chamber whose temperature is to be controlled and the air-conditioning unit having the gas outlet and the gas inlet facing the chamber are provided, and the temperature-controlled gas is controlled by the air-conditioning unit. A temperature atmosphere generating device for obtaining a predetermined temperature atmosphere in the chamber by circulating the gas in the chamber from the outlet to the air conditioner so that the gas in the chamber is circulated so as to be sucked into the air conditioner. Compared to the conventional device of the same type, the temperature distribution of the atmosphere inside the bar may be different even if a heating element or a heat absorbing element is placed in the controlled chamber or the temperature distribution of the cooler surface changes. It is possible to provide a temperature atmosphere generation device that can be made uniform or can be made to have a desired temperature distribution state other than intentionally made uniform.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an embodiment of the present invention.

2 is a partial cross-sectional view of the embodiment of FIG.

FIG. 3 is an explanatory diagram showing a manner of temperature uniformity when there is a variation in air-conditioner suction temperature.

FIG. 4 is an explanatory diagram showing a manner of temperature uniformity when the cooling capacity of the air conditioner cooler varies.

[Explanation of symbols]

 1 Controlled Chambers L, R Virtually Divided Zones in Chamber 1 2 Air Conditioner 21 Air Outlet 22 Air Intake 23 Cooler 241, 242 Air Heater 25 Cross Flow Fans 261, 262 Temperature Sensor 271, 272 Temperature Controller

Claims (2)

[Scope of utility model registration request] 1. A controlled chamber to be temperature-controlled, and an air conditioner having a gas outlet and a gas inlet facing the chamber, and the gas whose temperature is adjusted by the air conditioner is discharged from the outlet. A temperature atmosphere generating device that obtains a predetermined temperature atmosphere in the chamber by circulating the gas in the chamber so that the gas in the chamber is sucked from the suction port to the air conditioner, and a direction that crosses the gas circulation direction in the chamber. In a virtual division into a plurality of zones, temperature sensors are arranged at or near the outlet on the upstream side of each divided zone, and the temperature sensors are provided at positions upstream of the temperature sensors in the air conditioning unit. At least one type of temperature control element, which is controlled based on the detected temperature, is arranged in each temperature atmosphere. Raw equipment. 2. The temperature atmosphere according to claim 1, wherein a gas heating heater is employed as the temperature control element corresponding to each of the temperature sensors, and an integrated cooler is arranged on the upstream side of these heaters. Generator.