JP2016025327A - Cooling device for heating element mount box and electronic equipment having the same mounted therein - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent clog of a heat exchanger by providing a filter so that the filter pinches a condenser in a roll-like shape.SOLUTION: A partition plate 2 is provided to the top surface of a heating element mount box 8, a plate-like condenser 3 is provided in an outdoor side box 9 provided at the upper side of the partition plate 2, a plate-like evaporator 4 is provided in the heating element mount box 8 at the lower side of the partition plate 2, a cylindrical vane wheel 11 having an axis parallel to the condenser 3 is provided at an end face side of the condenser 3, a rotating shaft 12 having an axis parallel to the condenser 3 is provided at the other end side, the outdoor side box 9 is partitioned into two spaces by the condenser 3 and the cylindrical vane wheel 11, a flow-in port 18 is provided at the upstream side of the outdoor side box 9, a flow-out port 19 is provided at the downstream side of the outdoor side box 9, a filter 13 is provided so as to interpose the condenser 3 therebetween in a roll-like shape with the cylindrical vane wheel 11 and the rotating shaft 12 as the axes, and wind generated by an outdoor blower 6 is passed through the cylindrical vane wheel 11 to rotate the filter.SELECTED DRAWING: Figure 1

Description

  The present invention prevents the clogging of the condenser due to the accumulation of dust in the heating element storage box cooling device that dissipates the heat of the high-temperature medium by boiling and evaporating the refrigerant with the heat of the high-temperature medium and then condensing the liquid. About.

  This kind of heating element storage box cooling device is used for cooling inside a sealed storage box including an electronic component or the like that generates heat inside a base station of a mobile phone.

  In recent years, higher performance of electronic components and higher density of electronic components with respect to the control board have progressed, the amount of heat generated from the control board has increased dramatically, and the storage boxes for electronic components etc. have also become smaller, cooling There is a demand for higher performance and downsizing of equipment, and improved flexibility in layout that can be installed on either the side or top surface of a storage box for electronic components and the like. For this reason, a cooling method using a heat pipe is known as a cooling method with few components and a large amount of heat transfer (see, for example, Patent Document 1).

  However, in the heat pipe, the refrigerant vapor that rises by boiling and the refrigerant liquid that condensates and descends move in the same pipe, so that there is a problem that the refrigerant circulation efficiency and the refrigerant circulation efficiency deteriorate and the heat exchange efficiency deteriorates. is there. Therefore, a refrigerant vapor pipe that separates the evaporator in which the refrigerant evaporates and the condenser in which the refrigerant condenses into liquid and connects the evaporator and the condenser so that the refrigerant boiled and evaporated in the evaporator moves to the condenser. Then, since the refrigerant condensed and liquefied in the condenser moves to the evaporator, it is possible to efficiently dissipate heat by circulating a refrigerant by forming a refrigerant circuit with a refrigerant liquid pipe that connects the condenser and the evaporator. A boiling cooling device is known (see, for example, Patent Document 2).

  Hereinafter, a conventional boiling cooling apparatus will be described with reference to FIG.

  As shown in FIG. 8, the boil cooling device 101 has a partition plate 106 so that the high temperature portion 103 through which the high temperature air 102 is vented is at the lower portion and the low temperature portion 105 through which the low temperature air 104 is vented is at the upper portion. It is provided inside the partitioned main body box 107. In the high temperature portion 103, an evaporator 109 in which a refrigerant 108 is sealed is disposed. The evaporator 109 receives heat from the high-temperature air 102, and the refrigerant 108 is boiled and evaporated inside. A condenser 110 communicating with the evaporator 109 is disposed in the low temperature portion 105. In the condenser 110, the refrigerant 108 boiled and evaporated in the evaporator 109 dissipates heat to the low-temperature air 104 to be condensed and liquefied. The evaporator 109 and the condenser 110 communicate with each other through a refrigerant vapor pipe 111 and a refrigerant liquid pipe 112 that penetrate the partition plate 106. Moreover, the indoor side fan 113 which ventilates the high temperature air 102 to the high temperature part 103, and the outdoor fan 114 which ventilates the low temperature air 104 to the low temperature part 105 are provided. According to such a configuration, the refrigerant 108 boiled and evaporated in the evaporator 109 moves through the refrigerant vapor pipe 111 from the evaporator 109 to the condenser 110 due to the density difference, and is condensed and liquefied in the condenser 110. However, due to the density difference, the refrigerant 110 moves from the condenser 110 to the evaporator 109 through the refrigerant liquid pipe 112. In this way, the refrigerant 108 circulates naturally, and the heat of the high temperature air 102 is dissipated to the low temperature air 104.

JP-A-60-113498 JP-A-9-326582

  In such a conventional heating element storage box cooling device, while miniaturization is required, it is necessary to reduce the fin pitch of the heat exchanger in order to maintain the performance of the heat exchanger. There has been a problem that the outdoor heat exchanger to be passed as it is is clogged with dust in the outside air and maintenance work such as cleaning in a short period of time occurs.

  The present invention solves such problems, and aims to prevent clogging of a heat exchanger and reduce maintenance work.

  And in order to achieve this object, the heating element storage box cooling device of the present invention uses the top surface of the heating element storage box as a partition plate, and condenses the plate inside the outdoor box provided above the partition plate. A plate-like evaporator is provided inside the heating element storage box below the partition plate, and the condenser and the evaporator are connected by a refrigerant pipe to form a refrigerant cycle, and the condenser A cylindrical impeller provided with a shaft in parallel with the condenser is provided on the end surface side, a rotating shaft provided with a shaft in parallel with the condenser is provided on the other end surface side, and the condenser and the cylindrical impeller are provided. The outdoor box is partitioned into two spaces, a blower is provided in the upstream space or the downstream space of the condenser in the outdoor box, and the inlet and the downstream are provided in the upstream space of the outdoor box. An outlet is provided in the space on the side, and the cylindrical impeller and the rotating shaft are A filter is provided so as to sandwich the condenser in a roll shape, and the filter is rotated by passing the wind generated by the blower through the cylindrical impeller, thereby achieving the intended purpose. is there.

  According to the present invention, the clogging of the condenser is prevented by providing the filter so as to sandwich the condenser, which is the outdoor heat exchanger, around the cylindrical impeller and the rotating shaft. Can do. Since the filter rotates and dust attached to the filter on the downstream side of the condenser is also detached by the wind, the maintenance work of the filter can be reduced.

  Furthermore, clogging of the condenser can be prevented without using electric power by rotating the filter using wind power.

1 is a perspective view of the inside of the heating element storage box cooling device according to the first embodiment of the present invention. Side view of the same heating element storage box cooling device seen through inside Heating element storage box cooling device filter schematic diagram of Embodiment 2 of the present invention Heating element storage box cooling device filter section schematic diagram of Embodiment 3 of the present invention Heater body storage box cooling device filter schematic diagram of Embodiment 4 of the present invention Heater element storage box cooling device filter schematic diagram of Embodiment 5 of the present invention Heating element storage box cooling device filter schematic view of Embodiment 6 of the present invention Configuration diagram of conventional heating element storage box cooling device

  The heating element storage box cooling device according to an aspect of the present invention uses the top surface of the heating element storage box as a partition plate, and includes a plate-like condenser inside an outdoor box provided on the upper side of the partition plate, A plate-shaped evaporator is provided inside the heating element storage box below the partition plate. The condenser and the evaporator are connected by a refrigerant pipe to form a refrigerant cycle, and the condenser is condensed on the end face side of the condenser. A cylindrical impeller provided with a shaft in parallel with the condenser, and a rotary shaft provided with a shaft in parallel with the condenser on the other end face side, and the outdoor box by the condenser and the cylindrical impeller Is divided into two spaces, a blower is provided in the space on the upstream side or downstream side of the condenser in the outdoor box, and flows into the space on the upstream side of the outdoor box and the space on the downstream side. Provide an outlet and lower the condenser around the cylindrical impeller and the rotating shaft. By providing a filter so as to be sandwiched in a shape and passing the wind generated by the blower through the cylindrical impeller, the dust accumulated on the windward side of the condenser can be removed using wind power. It is possible to obtain a heating element storage box cooling device that can prevent clogging of the condenser without using filter driving power.

  Further, a brush that contacts the filter in a direction perpendicular to the movable direction of the filter is provided, and a heating element storage box cooling device that improves the effect of removing dust accumulated on the filter can be obtained.

  Moreover, the said cylindrical impeller is provided instead of the rotating shaft, and the heat generating body storage box cooling device which improved the movable performance of the filter can be obtained.

  Further, a claw portion is provided at the end of the cylindrical impeller, and a heating element storage box cooling device capable of preventing slippage between the cylindrical impeller and the filter can be obtained.

  Moreover, the slit which the said nail | claw part fits in a filter is provided, and the heating element storage box cooling device which can prevent a nail | claw part provided in the edge part of a cylindrical impeller and a filter from slipping can be obtained. .

  Moreover, the surface of a rotating shaft is made into a brush shape, and the heat generating body storage box cooling device which improved the removal effect of the dust accumulated on the filter can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 and FIG. 2 show a perspective view and a side view of the inside of the heating element storage box cooling device 1 of the first embodiment as seen through. As shown in FIGS. 1 and 2, the heating element storage box cooling apparatus 1 includes a ceiling of a sealed heating element storage box 8 having a functional operation unit 10 such as an electronic component that generates heat, such as a mobile base station. It is installed on the surface and is blown by the indoor blower 7 and the outdoor blower 6 so that the hot air of the indoor circulating air and the cold air of the outdoor air face each other as indicated by the block arrows.

  Here, the heating element storage box 8 provided with the heating element storage box cooling device 1 corresponds to an electronic device such as a mobile base station.

  As shown in FIG. 1, the heating element storage box cooling device 1 uses the top surface of the heating element storage box 8 as a partition plate 2, and condenses a plate inside the outdoor box 9 provided above the partition plate 2. A plate-shaped evaporator 4 and an indoor fan 7 are provided inside a heater 3, an outdoor fan 6, and a heating element storage box 8 below the partition plate 2, and the condenser 3 and the evaporator 4 are connected to a refrigerant pipe 5 The refrigerant cycle is configured by connecting with.

  A box partition 21 that divides the outdoor box 9 into an upstream space 22 and a downstream space 23 is provided, and the outdoor box 9 has an inlet 18 through which low-temperature air communicates between the outdoor space and the upstream space 22, an outdoor space, and a downstream space. An outlet 19 that communicates with the outlet 23 is provided.

  The evaporator 4 is disposed at the upper part of the heating element storage box 8, and the evaporator 4 is disposed to be inclined backward or forward with respect to the ventilation direction. It receives heat from high-temperature air due to the heat generated from and evaporates to the boiling point. Here, the refrigerant is R134a or the like.

  The condenser 3 is disposed in the outdoor box 9, and the condenser 3 communicates with the evaporator 4 and is disposed to be inclined in the same direction as the evaporator 4. To condense and liquefy. The refrigerant pipe 5 penetrates the partition plate 2 and communicates the evaporator 4 and the condenser 3.

  Further, a cylindrical impeller 11 provided with a shaft fixed on the end face side of the condenser 3 with a U-shaped fitting 20 is provided in parallel with the condenser 3, and the shaft of the cylindrical impeller 11 is provided on the other end face side. The filter 13 is rotatably provided so as to sandwich the condenser 3 in a roll shape with the cylindrical impeller 11 and the rotary shaft 12 as axes.

  Here, the filter 13 can be a resin mesh, but a metal that can be changed into a roll shape may be used.

  Here, the condenser 3 and the evaporator 4 are heat exchangers provided with wave-shaped fins, and when the filter 13 is not provided, the dust accumulated on the surface of the condenser 3 as described in the section of the above problem. There is a problem of clogging between fin pitches.

  With such a configuration, as shown in FIGS. 1 and 2, the air sent from the inlet 18 by the outdoor fan 6 passes through the filter 13, the condenser 3, and the downstream space 23, and the outlet 19 From the front end of the cylindrical impeller 11 through the downstream space 23 and discharged from the outlet 19, and from the front end of the cylindrical impeller 11 to the rear end The air that has escaped collides with the box partition 21, passes through the filter 13, the condenser 3, and the downstream space 23, and passes through the air path that is discharged from the outlet 19.

  That is, the lower end of the box partition 21 divides the outdoor box 9 into an upstream space 22 and a downstream space 23, but the upstream space 22 and the downstream space 23 include the filter 13, the condenser 3, and the cylindrical shape. A part of the impeller 11 communicates.

  Moreover, since the air sent by the outdoor blower 6 passes through the filter 13, dust contained in the air is captured by the filter 13, and when dust accumulates, the pressure loss of the filter 13 increases and the amount of air passing through the condenser 3 decreases. Then, the amount of air passing through the cylindrical impeller 11 is increased, and the rotational torque of the cylindrical impeller 11 is increased, so that the rotation of the cylindrical impeller 11 is started.

  Further, when the cylindrical impeller 11 is rotated by the wind pressure of the outdoor blower 6, the filter 13 is rotated and the dust trapped by the filter 13 is conveyed to the leeward side of the condenser 3. Here, since the dust comes to the leeward side, the dust is removed from the filter 13 by the wind pressure of the outdoor blower 6 and discharged from the outlet 19.

  Thereby, the maintenance work for filter cleaning can be reduced.

  When dust is removed from the filter 13, the pressure loss of the filter 13 decreases, and when the amount of air passing through the condenser 3 increases, the amount of air passing through the cylindrical impeller 11 decreases and the rotational torque of the cylindrical impeller 11 decreases. The rotation of the filter 13 stops.

  In this phenomenon, since the pressure loss of the filter 13 is small in the normal operation state in which the dust is not adhered to the filter 13 except during the dust removing operation, most of the wind from the outdoor blower 6 passes through the condenser 3, and the condenser This means that a cooling capacity of 3 can be maintained.

  Therefore, it is possible to obtain the heating element storage box cooling device 1 that automatically prevents clogging of the condenser 3 without using power for driving the filter.

  Here, the condenser 3 is inclined forward or backward, but may be arranged vertically. However, in this case, it is necessary to secure a suction space for the cylindrical impeller 11.

  In order to avoid contact between the filter 13 and the inner wall of the outdoor box 9, the filter 13 and the inner wall of the outdoor box 9 are provided with a clearance, so that dust accumulated on the filter 13 is downstream from the upstream space 22. It can be transported to the side space 23 and discharged from the outlet 19.

  In the present embodiment, the box partition 21 is provided. However, the box partition 21 can be eliminated if the ceiling surface of the outdoor box 9 is lowered so as to contact the filter 13.

  Moreover, in this Embodiment, although the cylindrical impeller 11 and the rotating shaft 12 are arrange | positioned at right and left as shown in FIG. 1, the same effect can be acquired even if it arrange | positions up and down.

  In the present embodiment, the number of stages of the condenser 3 is two, but may be one or three or more according to the heat generated by the functional operation unit 10.

(Embodiment 2)
FIG. 3 shows a schematic view of the filter portion of the heating element storage box cooling device 1 of the second embodiment.

  As shown in FIG. 3, a brush 14 that is in contact with the filter 13 in a direction perpendicular to the moving direction of the filter 13 is provided in the downstream space 23 in the center of the condenser 3 to remove dust accumulated on the filter 13. The heating element storage box cooling device 1 with improved effects can be obtained. In this case, the removed dust is discharged from the outlet 19 by a strong wind flow at the center of the condenser 3.

  Here, a spatula shape other than the brush 14 may be used as long as dust attached to the surface of the filter 13 can be removed.

(Embodiment 3)
FIG. 4 shows a schematic view of the filter portion of the heating element storage box cooling device 1 according to the third embodiment.

  As shown in FIG. 4, the heating element storage box cooling device 1 in which a cylindrical impeller 11 is provided instead of the rotary shaft 12 and the power for moving the filter 13 a is increased to improve the moving performance of the filter 13 a. Can be obtained.

(Embodiment 4)
FIG. 5 shows a schematic view of the filter portion of the heating element storage box cooling device 1 according to the fourth embodiment.

  As shown in FIG. 5, a claw portion 15 is provided at the end of the cylindrical impeller 11, and heat generation that can prevent the sliding between the cylindrical impeller 11 and the filter 13 when the claw portion 15 is caught by the filter 13. The body storage box cooling device 1 can be obtained.

(Embodiment 5)
FIG. 6 shows a schematic view of the filter portion of the heating element storage box cooling apparatus 1 according to the fifth embodiment.

  As shown in FIG. 6, a slit 16 is provided in the filter 13 b so that the claw portion 15 is fitted, and the claw portion 15 provided at the end of the cylindrical impeller 11 is fitted with the slit 16, so that the filter 13 b. Thus, it is possible to obtain the heating element storage box cooling device 1 that can prevent slipping. Here, if it is the said structure, since the tension | tensile_strength applied to the filter 13 can be reduced, rotation resistance can be reduced.

(Embodiment 6)
FIG. 7 shows a schematic view of the filter portion of the heating element storage box cooling apparatus 1 of the sixth embodiment.

  As shown in FIG. 7, the surface of the rotating shaft 12 a has a brush shape 17, and dust accumulated on the filter 13 is scraped into the downstream space 23 by the brush shape 17 and discharged from the outlet 19. Thus, the heating element storage box cooling device 1 with improved dust removal effect can be obtained.

  The heating element storage box cooling device of the present invention is useful as a heating element storage box cooling device that can prevent clogging of the condenser due to dust accumulation and reduce maintenance work without using new power. .

DESCRIPTION OF SYMBOLS 1 Heating body storage box cooling device 2 Partition plate 3 Condenser 4 Evaporator 5 Refrigerant pipe 6 Outdoor fan 7 Indoor fan 8 Heating element storage box 9 Outdoor box 10 Functional operation part 11 Cylindrical impeller 12, 12a Rotating shaft 13, 13a, 13b Filter 14 Brush 15 Claw part 16 Slit 17 Brush shape 18 Inlet 19 Outlet 20 U-shaped bracket 21 Box partition 22 Upstream space 23 Downstream space

Claims (7)

Using the top of the heating element storage box as a partition plate,
A plate-shaped condenser is provided inside the outdoor box provided on the upper side of the partition plate,
Provide a plate-like evaporator inside the heating element storage box below the partition plate,
The condenser and the evaporator are connected by a refrigerant pipe to constitute a refrigerant cycle,
A cylindrical impeller provided with a shaft parallel to the condenser is provided on the end face side of the condenser, and a rotary shaft provided with a shaft parallel to the condenser is provided on the other end face side,
Partitioning the outdoor box into two spaces by the condenser and the cylindrical impeller;
A fan is provided in the space on the upstream side or the downstream side of the condenser in the outdoor box,
Provide an inlet in the upstream space of the outdoor box and an outlet in the downstream space;
A filter is provided so as to sandwich the condenser in a roll shape around the cylindrical impeller and the rotation shaft,
A heating element storage box cooling device for rotating a filter by allowing wind generated by a blower to pass through the cylindrical impeller. The heating element storage box cooling device according to claim 1, wherein a brush is provided in contact with the filter in a direction perpendicular to the movable direction of the filter. The heating element storage box cooling device according to claim 1 or 2, wherein the cylindrical impeller is provided instead of the rotating shaft. The heating element storage box cooling device according to claim 1, wherein a claw portion is provided at an end of the cylindrical impeller. The heating element storage box cooling device according to claim 4, wherein the filter is provided with a slit for fitting the claw portion. The heating element storage box cooling device according to claim 1 or 2, wherein a surface of the rotating shaft is brush-shaped. The electronic device which has arrange | positioned the heat generating body storage box cooling device as described in any one of Claim 1 to 6 on the top | upper surface of the heat generating body storage box.

Images