JPH0688666A - Automatic alarm safety device for ultra-low-temperature freezer during power service interruption - Google Patents

Abstract

PURPOSE:To perform auxiliary cooling in order to cope with an abnormal condition when a temperature in a freezer is just fluctuated by the failure of a compressor in the freezer, or due to the interruption of electric power supply, and enable an automatic alarm to be issued in order to eliminate rapidly and reliably such an abnormal condition. CONSTITUTION:The title device comprises temperature sensors 2, 4 for detecting a temperature in a freezer, an auxiliary cooling means utilizing a liquid carbonic acid gas and the like for performing the auxiliary cooling of the interior of the freezer in response to an alarm output from the temperature sensor 2 or 4, an automatic telephone signal emitting terminal 10 for automatically sending an alarm to a supervisory specialist firm 13 by utilizing a telephone line in response to the alarm output from the temperature sensor 2 or 4, and a system of a user company A who receives the alarm from the automatic telephone signal emitting terminal 10 and owns the freezer. In the case where the alarm is received by the user company, this may be accomplished by transmitting the alarm issued by the automatic telephone signal emitting terminal 10 to the user company A through a maintenance service company 15, or it is equally well to have a predetermined maintenance and control section 14 organized by the user company A to receive the alarm from the automatic telephone signal emitting terminal 10.

Description

Detailed Description of the Invention

[0001]

[Industrial application] In the fields of biotechnology, medical care, and food, in order to store and preserve valuable preserved materials such as specimens, cells, DNA, blood, and high-grade foods over a long period, -30
An ultra-low temperature freezer having a freezer compartment of ℃ to -150 ℃ is used. The present invention backs up the auxiliary cooling when the ultra-low temperature freezer used for such an application cannot be cooled due to a power failure, a failure, or the like, and an automatic alarm is provided to quickly eliminate this situation. The present invention relates to the improvement of the automatic alarm protection device for the ultra-low temperature freezer in case of power failure.

[0002]

2. Description of the Related Art Conventional devices used for this type of application are
It was configured as shown in FIG. In the figure, reference numeral 1 denotes an ultra-low temperature freezer having an ultra-low temperature freezing room of about -80 ° C to -130 ° C, and the freezer 1 is divided into a freezing room 1A and a machine room 1B. Reference numeral 2 is a first temperature detecting sensor provided in the freezer compartment 1A, and 3 is a first controller. When the compressor (not shown) of the freezer 1 fails, the first controller 3 detects the failure and sends an alarm output. Reference numeral 4 denotes a second temperature detecting sensor provided in the freezing compartment 1A, which promptly detects an abnormal rise in the temperature inside the freezing compartment at the time of a power failure or a failure, and issues an alarm output. 5 is the second
Controller, 6 is a solenoid valve, 7 is an auxiliary cooling liquid storage cylinder containing liquefied carbon dioxide or liquefied nitrogen, and 8
Is a supply pipe for liquefied carbon dioxide gas which is the auxiliary cooling liquid, 8a
Is a shower-like faucet provided at the tip of the supply pipe 8 and these auxiliary cooling means are constituted by 4 to 8a. In the above configuration, the first temperature detecting sensor operates the first controller 3 in response to the detection signal, and the cold storage for keeping the quality and freshness of the frozen product or the frozen product stored in the refrigerator at the normal time On the other hand, when a situation occurs where the temperature inside the refrigerator changes due to a power failure or a compressor failure, the detection signal (alarm output) of the second temperature detection sensor 4 is transmitted to the second controller 5. And the solenoid valve 6 is opened, or the solenoid valve 6 is opened by the alarm output transmitted from the first controller 3, and the auxiliary cooling liquid such as liquefied carbon dioxide gas is supplied from the auxiliary cooling liquid storage cylinder 7. It was designed to be sprayed into the refrigerator through a shower-shaped faucet 8a provided at the tip of the pipe 8.

[0003]

By the way, in the conventional apparatus, the auxiliary cooling means backs up the power when a power failure or the like occurs as described above. There was a limit of 8 hours.
Therefore, if the failure occurs at night or on holidays, maintenance is not performed against the failure such as power failure during the backup period, so that the contents stored in the freezer are valuable such as blood and medical drugs. In the case of stored materials, there is a risk that even a slight change in the temperature inside the warehouse may cause a serious deterioration in quality or accelerate the transition to deterioration such as spoilage. SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic alarm safety device for solving such problems (problems) of the conventional ones when a power failure occurs in an ultra-low temperature refrigerator.

[0004]

In order to solve the above problems, the present invention provides a temperature detecting sensor for detecting the temperature in the freezer and an alarm output by the temperature detecting sensor or an alarm output by a compressor failure. In addition, an auxiliary cooling means for auxiliary cooling the inside of the freezer is provided, and a telephone automatic transmission terminal for automatically transmitting the alarm signal to a monitoring specialist company by using a telephone line corresponding to any one of the alarm outputs. , A user company that owns a freezer for receiving the alarm signal from the automatic telephone transmission terminal. In this case, the alarm from the telephone automatic transmission terminal may be transmitted to the user company via a maintenance service company, or the user company may transmit the telephone automatic transmission terminal. You may make it have a predetermined maintenance management section for receiving the alert from.

[0005]

[Operation] In the event of an abnormal situation in which the temperature inside the ultra-low temperature freezer greatly changes due to a power failure or a compressor failure, the auxiliary cooling means immediately starts the backup operation, and in parallel with this, A situation such as a power failure is immediately notified to the user company or maintenance service company via a monitoring company using the telephone public line, and the maintenance personnel immediately go straight to the ultra low temperature freezer of the user company. The abnormal situation is eliminated by promptly and accurately removing the cause of the power failure, arranging a standby power supply, replacing the compressor, or removing the failure as necessary. Therefore, the deterioration of the quality of valuable preserved materials such as blood stored in the freezer is avoided in advance.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to an embodiment shown in FIG. In the figure, the same components as those of the conventional one are denoted by the same reference numerals as those in FIG. Reference numeral 9 is a notification switch, which includes the first and second controllers 3 and 5
It is for transmitting an alarm signal from the controller to the maintenance system described later, for example,
When such a notification is unnecessary, such as when the freezer is not in use, it is possible to forcibly cut off the transmission of signals to the maintenance system. Reference numeral 10 denotes a telephone automatic transmission terminal, and when an alarm is given to the telephone automatic transmission terminal 10 through the notification switch 9, the telephone automatic transmission terminal 10 uses the telephone 11 to automatically use a voice of a person through the telephone line 12 ( A signal is sent to the monitoring specialized company 13 (it may be artificial voice). Reference numeral 13 is a monitoring specialized company. The monitoring specialized company 13 constantly monitors the notification of alarm signals to the monitoring specialized company 13 using a computer or the like, and upon receiving the notification, a contract is made in advance. You
A notification is sent to the maintenance management section 14 of the company A, for example. Therefore, when the maintenance management section 14 receives the notification, the maintenance personnel immediately go to the ultra-low temperature freezer 1 to remove the cause of the compressor failure, remove the cause of the power outage as a measure at the time of power outage, and drive the standby power supply. It is possible to quickly respond to changes in the temperature inside the refrigerator. Instead of this, the monitoring specialist company 13 maintains the maintenance service contracted with the user company A.
It is also possible to send an alarm signal to notify the service company 15 (or an agent) of the abnormal situation, and the maintenance staff of the maintenance service company 15 who has received the notification immediately visits the user company A to carry out the ultra low temperature freezer 1. Alternatively, the cause of the failure of the compressor may be removed and the above-mentioned countermeasure against the power failure may be taken. As a result, in addition to the slight change in the temperature inside the refrigerator, even if an abnormal situation such as a failure of the compressor or a power failure occurs that leads to a long-term cooling failure, the back-up system is likely to be backed up by the auxiliary cooling system. Since any one of the maintenance personnel will be notified promptly and the required maintenance work will be performed promptly and accurately, the deterioration and deterioration of the quality of the valuable contents stored in the freezer can be prevented. To be done. In the above embodiment, there are two temperature detecting sensors, the first temperature detecting sensor 2 for detecting the temperature inside the refrigerator during normal operation and the second temperature detecting sensor 4 for detecting the temperature inside the refrigerator during power failure. Although the description has been made in the case of providing the above, it is needless to say that this can be replaced by one common temperature detecting sensor.

[0007]

As described above, according to the present invention, even if an abnormal situation such as a temperature change in the freezer due to a failure of the compressor of the freezer or a power failure occurs, it is dealt with immediately and immediately. Since the backup by the auxiliary cooling means is made and the abnormal situation is immediately notified to the user company or the maintenance service company directly through the monitoring specialized company using the telephone public line. ， Has the following excellent effects. Maintenance personnel can go straight to the freezer of the user company to quickly and accurately perform maintenance, replacement of the compressor, removal of the cause of the power failure, or switching to the standby power supply. Therefore, the time from the occurrence of an abnormal situation to the elimination of the abnormal situation becomes extremely short, so that the abnormal situation can be canceled within the range of the back-up posture that is being performed at the same time. Have been tested,
Valuable preservation materials such as cells, DNA, blood and high-grade foods can be properly preserved without deteriorating their quality. Moreover, in the conventional case, the user does not have to voluntarily perform a patrol for valuable preserved items in the ultra-low temperature freezer at night or on holidays, which is not necessary.
The maintenance work for the freezer has become extremely efficient.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a schematic configuration of a conventional example.

[Explanation of symbols]

 1: Ultra-low temperature freezer 2, 4: Temperature detection sensor 6: Solenoid valve 7: Auxiliary coolant storage cylinder 8: Supply pipe 9: Notification switch 10: Automatic telephone call terminal 12: Telephone line 13: Monitoring company 14: Maintenance management Section 15: Maintenance service company A: User company

Claims (3)

[Claims] 1. A temperature detecting sensor for detecting the temperature in the freezer, and an auxiliary cooling means for auxiliary cooling the inside of the freezer in response to an alarm output by the temperature detecting sensor or an alarm output by a compressor failure. , An automatic telephone sending terminal for automatically sending the alert signal to a monitoring specialized company using a telephone line corresponding to any of the above alarm outputs, and for receiving the alert signal from the automatic telephone sending terminal An automatic alarm security device when a power failure occurs in an ultra-low temperature freezer, which is composed of a user company that owns a freezer. 2. The automatic alarm security at the time of power failure of the ultra low temperature freezer according to claim 1, wherein the alarm signal from the automatic telephone calling terminal is transmitted to the user company via a maintenance service company. apparatus. 3. The user company according to claim 1 or 2, wherein the user company has a predetermined maintenance management section for receiving an alarm signal from the telephone automatic transmission terminal. Automatic alarm security device.