JPH04146694A - Electronic equipment cooling device - Google Patents

Abstract

PURPOSE:To effectively prevent the occurrence of moisture condensation in an electronic equipment by a method wherein a coolant heat exchanger, a cooling fan, a control, and the like are provided inside a housing, cooling air is sent into the electronic equipment by the cooling fan, and the temperature of the air becomes lower than a coolant temperature. CONSTITUTION:A heat releasing section 7, a heat exchanger 2, a cooling fan 8, and a coolant pump 4 are arranged in a housing and electrically connected to a control 9 provided inside an electronic equipment through the intermediary of a control signal system 3. A circulation pump 4 which circulates coolant 10 and a coolant tank 5 which absorbs the volume change of the coolant 10 are connected together through a circulation piping 6. When the heat releasing section 7 becomes as high in temperature as a set value, the released heat is absorbed by the coolant 10, and the coolant 10 is cooled down by cooling air through the heat exchanger 2. Basing on the result of the detected temperature, an operation starting signal is sent to the cooling fan 8 and the circulation pump 4 from the control 9 through the intermediary of the control signal system 3, the coolant 10 forcedly circulated is made to absorb heat released from the heat releasing section 7. The housing is filled with air which cools down coolant, and in the heat exchanger 2 and the like no dew is generated.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cooling device for electronic equipment, and more specifically,
The present invention relates to a cooling device that uses liquid refrigerant to prevent condensation in electronic devices.

[Conventional technology]

A conventionally known cooling device for an electronic device is schematically shown in FIG. 3, in which a cooling device 31 is attached to the electronic device 21. The electronic device 21 is provided with a control section 22 for cooling the heat generating section 23, and the control section 22 sends a control signal to the cooling device 31 via the control signal system 26 depending on the amount of heat generated in the heat generating section 23. At the same time, the flow rate of the refrigerant supplied to the heat generating section 23 via the cooling pipe 24 is controlled. The temperature inside the electronic device 21 having the heat generating section 23 is detected by the air temperature sensor 25 and is supplied to the cooling device 31 via the temperature signal system 27 together with the control signal system 26 .

The cooling device 31 includes a heat exchanger 37 that cools the refrigerant that is sent to and from the electronic device 21 via the circulation line 28, and a refrigerant cooling line 39 connected to the circulation line 28. is provided, and this refrigerant cooling pipe line 41 is connected to a three-way valve 36.
One side is connected to the heat exchanger 37, and the other side is connected to the refrigerant tank 34 via the heat exchanger 37. The refrigerant tank 34 is for absorbing changes in the volume of the refrigerant, and is connected to a supply pipe 42 for supplying the refrigerant 40 to the circulation pipe 28 via a pump 35. A refrigerant temperature sensor 39 for detecting the temperature of the refrigerant is attached to the supply pipe 42 of the refrigerant 40.
The output signal of is sent to the control section 32, and the output signal of the control section 32
It is possible to input control signals from the Pump 35. The three-way valve 36 is also connected to the control unit 3 together with the refrigerant temperature sensor 39.
It is controlled by a control signal from 2 via a control signal system 43.

Further, the heat exchanger 37 is connected to the control signal system 44 from the control section B 32.
It has a cooling fan 38 which is driven by control B via the cooling fan 38, and is driven so that the refrigerant 40 reaches an initial temperature.

When it is detected that the heat generation temperature of the heat generating section 23 has reached the set temperature, the pump 35 and the cooling fan 38 receive a drive start signal from the control section 32 and start operating. The temperature detected by the refrigerant temperature sensor 39 is compared with the temperature detected by the air temperature sensor 25 in the electronic device 21, and the three-way valve 36 opens the passage to the heat exchanger 37 in a temperature range where the difference between the two temperatures does not cause condensation. The refrigerant is cooled by the cooling air from the cooling fan. When a temperature difference occurs under condensation conditions, the three-way valve 36 closes the passage to the heat exchanger 37 and opens the bypass line to prevent the refrigerant from being overcooled in the heat exchanger 37.

[Problem to be solved by the invention]

In the above-mentioned cooling device for electronic equipment, the air temperature inside the electronic equipment changes independently of the refrigerant temperature, and in order to prevent condensation inside the electronic equipment, the refrigerant temperature should be adjusted to follow the air temperature inside the electronic equipment. A means for controlling the electronic equipment is essential, and there is a problem in that the cost of the electronic equipment is increased by the attached parts of the electronic equipment.

[Purpose of the invention]

The present invention has been developed by equipping an electronic device with a heat exchanger capable of absorbing heat generated by a heat generating part, a cooling fan, etc., so that the temperature inside the electronic device is lower than that of the refrigerant. The object of the present invention is to provide a cooling device that has a simple control system and can reliably prevent condensation.

[Means to solve the problem]

The present invention includes a refrigerant that cools a heat generating part in an electronic device, and a cooling mechanism that sends this refrigerant into the heat generating part through piping, and this cooling mechanism is an air-cooled heat exchanger that air-cools the refrigerant. A cooling device for an electronic device comprising a cooling fan attached to the heat exchanger, and a refrigerant cooling degree control unit that controls driving of the cooling fan and sets the refrigerant to a predetermined temperature. A configuration is adopted in which a cooling fan and a heat exchanger of the cooling mechanism are installed below a heat generating part within the electronic device. This aims to achieve the above-mentioned objective.

[For production]

According to the electronic device cooling device of the present invention, the electronic device is filled with air for cooling the refrigerant, and the device air temperature is lower than the refrigerant temperature, so that no dew condensation occurs.

〔Example〕

Embodiments of the present invention will be described below with reference to FIG. 1 of the accompanying drawings. In FIG. 1, reference numeral 1 designates the entire electronic device, and inside the housing there is a heat generating section 7. heat exchanger 2
．． Cooling fan 8. A refrigerant pump 4 is arranged, and these are connected via a control signal system 3 to a control unit 9 installed in the electrical equipment. Further, a circulation pump 4 that circulates the refrigerant 10 and a refrigerant tank 5 that absorbs changes in the volume of the refrigerant are connected by a circulation pipe 6. The circulation pump 4 and the cooling fan 8 are also connected to the control section 9 via the control signal system 3 in a circuit.

When the heat generating section 7 reaches the set temperature, the heat generated here is absorbed by the refrigerant 10, and this refrigerant 10 is cooled by the cooling air blown by the cooling fan 8 in the heat exchanger 2. These controls are performed as a result of temperature detection.
A cooling fan 8. This is done by sending an operation start signal to the circulation pump 4.

The refrigerant 10 that is forcibly circulated under this control absorbs heat again in the heat generating section 7 of the electronic device l.

The housing of the electronic device 1 is filled with air that cools the refrigerant, and this air itself has a lower temperature than the refrigerant that has absorbed heat, so that no condensation occurs in the heat exchanger 2 or the like.

[Other Examples]

In FIG. 2 of the attached drawings, the first embodiment is used as a basic part, and a cooling device is used for an electronic device including three additional electronic devices 1, and a refrigerant tank 5. Circulation pump 4. The control unit 9 is shared.

〔Effect of the invention〕

As described above, according to the cooling device for electronic equipment of the present invention,
The housing that makes up the electronic device is equipped with a refrigerant heat exchanger, a cooling fan, and a control unit, so that the electronic device is filled with cooling air from the cooling fan, so the temperature of the filled air is equal to the refrigerant temperature. It is possible to provide an unprecedented and excellent cooling device for electronic equipment that can effectively prevent dew condensation from occurring within the electronic equipment.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, FIG. 2 is a block diagram showing another embodiment, and FIG. 3 is a block diagram showing a conventional example. 1...Electronic equipment, 2...Heat exchanger, 3
...Control signal system, 4...Circulation pump,
5...refrigerant tank, 6...circulation pipe,
7... Heating element, 8... Cooling fan, 9
. . . Control unit, 10 . . . Refrigerant. Applicant Kofu NEC Co., Ltd. Agent Patent Attorney Isamu Takahashi

Claims (1)

[Claims] (1). The cooling mechanism includes a refrigerant that cools a heat generating part in an electronic device, and a cooling mechanism that sends this refrigerant into the heat generating part through piping, and this cooling mechanism includes an air-cooled heat exchanger that air cools the refrigerant, and A cooling device for an electronic device comprising a cooling fan attached to a heat exchanger, and a refrigerant cooling degree control unit that drives and controls the cooling fan and sets the refrigerant to a predetermined temperature. A cooling device for electronic equipment, characterized in that a fan and a heat exchanger are installed below a heat generating part in the electronic equipment.