JP2008117984A - Perfect fanless heater accommodation housing and hybrid heater accommodation housing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an internal structure of a simple and cheap heater accommodation housing, in which a temperature of a heater contained inside can be held to a predetermined value without using any special equipment such as a fan or the like and any maintenance isn't required. <P>SOLUTION: In an exterior housing 1 there is arranged an interior housing 2 which is independently sealed. An upper part opening 5 and a lower part opening 6 are provided at an upper portion and a lower portion, respectively. A waste heat duct 7 and a cooling duct 8 communicating with a heat storing spatial 9 at an upper part of the interior housing 2 are each arranged between the interior housing 2 and the exterior housing 1. Thus, there are formed a series of routes constituted by connecting between the heat storing spatial 9 and the interior housing 2 with two systems of independent ducts. A pressure difference produced by an ascending air flow caused by a heat of a heater 4 in the interior housing 2 generates a circulating air flow. In this case, since a heat sink 10 to an outside of a housing is furnished in a route of the cooling duct 8, an effective heat dissipation becomes possible by generating a convection in the housing without using any fan or the like as in the past. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a completely fanless heating element storage housing that holds a heating element housed in a substantially hermetically sealed state without impairing its function regardless of environmental conditions, and does not use a special cooling device. The present invention relates to a hybrid heating element housing case in which a fan is disposed in a part of a fanless heating element housing case to hold the heating element more completely and to maintain the heating body stably even when the fan fails.

In order to maintain the temperature of the heating element at a constant temperature in the sealed heating element housing case, it is necessary to dissipate heat generated from the heating element to the outside of the case. For that purpose, means for conducting heat conduction and heat radiation from the inside of the housing to the outside is necessary. Examples of conventional known techniques include "Patent Document 1,""Patent Document 2,""Patent Document 3," and the like.
JP 2001-267774 A (FIG. 3) Japanese Patent Laying-Open No. 2001-147062 (FIG. 10) JP2003-332773 (FIG. 2)

  The “equipment housing case” of “Japanese Patent Laid-Open No. 2001-267774” of “Patent Document 1” is a heat exchanging portion in which an internal fan (44) and an external fin (45) are provided on both side surfaces in a sealed case (11). (41) is arranged, an internal fin (64) and an external fin (65) are provided on the upper side, and a fan (13) is provided in the vicinity of the outdoor air outlet (67) on the ceiling. In this structure, the heating element is cooled by the overall structure described above, and each of the above elements is a necessary element.

  “Patent Document 2”, “Japanese Patent Application Laid-Open No. 2001-147062”, “Heat Dissipating Structure of Heating Element Storage Housing” is a known technique by the same applicant as the present invention, and the feature thereof is that around the heating element (17). The black body (19), the inner surface side protruding piece (11), and the outer surface side protruding piece (12) are provided to guide the heat generated from the heating element (17) to the duct (13) and exhaust the heat from the ceiling plate (21). As shown in FIG. 10, in order to effectively dissipate heat from the heating element (17), a circulation flow (16) is formed in the storage chamber of the heating element (17). A circulation fan (31) is arranged.

  The “heat sink structure of the housing” of “Japanese Patent Application Laid-Open No. 2003-332773” of “Patent Document 3” is the same as that of the present invention, but as shown in FIG. A heat sink (1) is disposed around and an internal fan (8) is provided.

  As described above, the conventional technology has a structure that efficiently exhausts the air existing in the space surrounding the heating element to the outside of the housing. However, since the amount of air inside the housing is limited, the air immediately saturates. Heat dissipation efficiency decreases. For this purpose, it is necessary to move the air quickly, and it is absolutely necessary to forcibly circulate and release the air by a fan or the like. On the other hand, when a fan is used, its power unit and drive unit are required, and these have a risk of failure and require maintenance every certain period.

When storing the heating element at a constant temperature, maintenance is required for each housing, but as a device requiring maintenance, only some communication devices and control devices were mainly targeted, but high speed, In addition, at present, highly information-oriented, heat generating elements such as information devices having high accuracy and various performances and functions are required, and a fan is inevitably required to maintain the temperature, and maintenance is required.
On the other hand, there are various places for installing the housing for storing the heating elements, and there are many places where it is difficult to perform maintenance regularly. Therefore, it is not impossible to devise a cooling means that does not require maintenance, but it is complicated and effective. Therefore, it is extremely useful if there is a housing that can independently create a constant temperature environment without requiring a power unit or a drive unit. That is, a maintenance-free heating element housing case is required. On the other hand, a maintenance-free housing is most desirable, but the external environment may change greatly, and it is safe to install a fan to maintain more complete reliability. However, since a maintenance-free housing is used as the base, even if the fan fails or maintenance cannot be performed for a certain period of time, the safety of the heating element can be protected by the function of the completely fanless heating element housing . Thus, a hybrid heating element housing case using a fan is also required.

  The present invention has been invented based on the above requirements, and is a completely fanless system that can maintain a heating element at a temperature that can maintain its function regardless of environmental conditions without using a fan, and has a maintenance-free effect. An object is to provide a heating element housing. In addition, a fan is used in combination with the complete fanless heating element storage housing in order to completely protect the heating element even if the fan breaks down for a more complete heating element protection. An object is to provide a hybrid heating element housing.

  In order to achieve the above object, the invention of claim 1 is characterized in that the heating element is housed in a substantially hermetically sealed state, and the heating element can be held in a state that does not impair its function regardless of environmental conditions. A heating element hermetically sealed housing that is not equipped with a special cooling device, wherein the housing is housed in an outer housing made of a substantially sealed box, and is housed inside the outer housing, A cooling duct is formed along the vertical direction between the two, and a heat storage space is formed between the outer casing and the ceiling inner surface, and the heating element is accommodated therein, and upper openings are provided above and below it. A waste heat duct communicating with the upper opening and the heat storage space is formed between the upper opening and the heat storage space, and the heat storage space communicates with the heat storage space. The cooling duct communicates with the lower opening.

  The invention according to claim 2 is characterized in that the opening on the heat storage space side of the cooling duct is formed below the opening on the heat storage space side of the waste heat duct.

  The invention of claim 3 is characterized in that a heat sink is disposed adjacent to the cooling duct.

  The invention according to claim 4 is characterized in that the outer casing is surrounded by a heat shield plate through a space passage.

  According to a fifth aspect of the present invention, a heat sink is disposed between the upper surface of the heat storage space and the canopy heat shield plate in the heat shield plate, and the canopy heat shield plate has a plurality of small holes. Is formed as an opening.

  According to a sixth aspect of the present invention, a fan is disposed in the vicinity of the upper opening of the inner casing of the complete fanless heating element storage casing according to the first to fifth aspects.

According to the complete fanless heating element housing case of the first aspect of the present invention, the heating element heats the air in the inner casing, but the heat expands and the lightened air rises and flows upward from the upper opening. And flows into the upper heat storage space through the waste heat duct. Although the heat accumulation air is pressurized by this rising airflow, the inside of one inner casing is depressurized and a pressure difference is generated between them, and this pressure difference causes a downward airflow from the heat accumulation space through the cooling duct. This airflow again enters the inner housing and generates a circulating air flow, thereby removing heat from the heating element. Note that the air that has passed through the cooling duct as a descending airflow is introduced into the internal housing that is decompressed from the lower opening to cool the heating element.
The heating element is cooled by the above air flow. As described above, the present invention can improve the maintenance-free effect without using a fan. That is, the heating element can be naturally held at a desired temperature in a state where it is left standing. Also, it does not place a burden on resources and the environment.

  Further, according to the completely fanless heating element housing case of the second aspect, since the opening of the waste heat duct is disposed above the opening of the cooling duct, the ascending air current and the descending air current are not mixed and thus stable. Airflow circulation is possible.

  According to the completely fanless heating element housing case of claim 3, since the heat sink is disposed adjacent to the cooling duct, the downdraft is sufficiently cooled, and the heating element can be cooled and held at a desired temperature. it can.

  According to the completely fanless heating element housing case of claim 4, since the outer case is surrounded by the heat shield, the outside air temperature is blocked and the space between the outer case and the inner case is removed. Heat is dissipated.

  According to the completely fanless heating element housing case of claim 5, by providing a heat sink above the heat storage space, the air is cooled in advance in the heat storage space and sent to the cooling duct side and the heat shield plate. The air in the space between the outer casing and the outer casing is discharged from the small hole of the ceiling heat shield, and this flow increases the circulation airflow.

  Further, according to the hybrid heating element housing case of claim 6, by providing the fan in the complete fanless heating element housing case, the temperature of the heating element can be maintained more reliably, and the fan is temporarily broken. Can also maintain the temperature of the heating element. In addition, the maintenance of the fan may be performed when possible, and the burden on the maintenance is greatly reduced.

  Embodiments of a complete fanless heating element housing and a hybrid heating element housing according to the present invention will be described in detail below with reference to the drawings. “FIG. 1” to “FIG. 3” show a complete fanless heating element housing case, and “FIG. 4” shows an example of a hybrid heating element housing case.

  As shown in FIGS. 1A and 1B, the complete fanless heating element housing case 100 is roughly divided into the following components. That is, it comprises an outer casing 1 that is a substantially sealed box, an inner casing 2 that is housed in the casing 1 and houses a heating element 4, a heat shield 3 that surrounds the outer casing 1, and the like.

  As shown in FIG. 1A, the outer casing 1 is surrounded by a side plate 1a, has a ceiling plate 1b on the top surface, an open / close door 1c on one side, and a bottom plate 1d on the lower surface. It consists of a substantially hermetically sealed box. The open / close door 1c is for entering and exiting the inner casing 2, and is completely sealed.

  The inner housing 2 is surrounded by a plate body on the upper, lower, left and right sides, and is formed of a substantially hermetically sealed box having an open / close door on one side, and houses the heating element 4 therein. The opening / closing door is for the heating element 4 to enter and exit. As shown in FIGS. 1A and 1B, a gap is formed between the inner surface of the outer housing 1 and the inner surface of the inner housing 2. For convenience of explanation, the gaps in FIG. 1A are referred to as gaps A and B, and the gaps in FIG. Further, a gap E is formed between the inner surface of the ceiling plate 1 a of the outer casing 1 and the upper surface of the inner casing 2. An upper opening 5 as shown in FIG. 1B is formed on the gap A side, and a lower opening 6 as shown in FIG. 1A is formed in the gap C and the gap D.

  A waste heat duct 7 communicating with the upper opening 5 is formed above the gap A. Further, the gap C and the gap D become cooling ducts 8 and 8 and communicate with the lower opening 6. Both the waste heat duct 7 and the cooling duct 8 communicate with the gap E where the upper opening is the heat storage space 9, but the opening 7 a of the waste heat duct 7 is above the opening 8 a of the cooling duct 8. Placed in. Further, as shown in FIG. 1A, heat sinks 10, 10 are arranged in the cooling ducts 8, 8.

  On the other hand, a heat shield 3 is disposed around the outer casing 1 so as to surround the outer casing 1. For convenience of explanation, the heat shield 3 on the ceiling side is the ceiling heat shield 3a, and the heat shield 3 on the side is the side heat shield 3b. A space 11 is formed between the outer casing 1 and the heat shield plate 3. For convenience of explanation, the space 11 on the ceiling side is defined as a ceiling space 11a and the space 11 on the side surface is defined as a side space 11b. FIG. 2 is a perspective view schematically showing the main part of FIG.

Next, the temperature holding of the heating element 4 in the complete fanless heating element storage housing 100 shown in FIGS. 1 and 2 will be described.
The air in the inner housing 2 is heated and expanded by the heat generated by the heating element 4. The lightened air rises and enters the waste heat duct 7 communicated with the air from the upper opening 5 to form an ascending air current and rises toward the opening 7a. The inside casing 2 is depressurized by the generation of the rising airflow. The air that has left the opening 7a enters the heat storage space 9 that communicates therewith, and temporarily accumulates. Therefore, the pressure in the heat storage space 9 becomes high. The heat storage space 9 communicates with the opening 8 a of the cooling duct 8, and the lower portion communicates with the inside of the inner housing 2 via the lower opening 6. As described above, the inside of the inner casing 2 is depressurized, and the heat storage space 9 is pressurized, so that a downdraft is generated in the cooling duct 8, and the air of this downdraft is introduced into the inner casing 2. Is done.
On the other hand, since the heat sink 10 is disposed adjacent to the cooling duct 8, the air in the descending airflow is cooled. Thereby, the heating element 4 in the inner housing 2 is cooled. The heat generated from the heating element 4 is cooled by this cooling air, but becomes hot and expands into the inner housing 2, and the above steps are repeated. Although the outer casing 1 is surrounded by the heat shield plate 3, since there is a space 11 between the heat shield plate 3 and the outer casing 1, the heat from the heat sink 10 passes through the space 11. The heat is radiated from 3 to the outside.

As described above, the heating element 4 can be maintained at a desired temperature by devising the size of the ducts 7 and 8, the size of the heat storage space 9, and the capacity of the heat sink.
Since no cooling device is provided as described above, maintenance is not required, and a maintenance-free housing is obtained. Therefore, even if this complete fanless heating element housing case 100 is installed at an arbitrary place and is left for maintenance-free operation, the heating element can be safely managed. Therefore, it is extremely advantageous as compared with the conventional case requiring maintenance, and greatly contributes to environmental conservation.

  FIGS. 3A and 3B are similar to FIGS. 1 and 2 as an overall structure, but differ in that a heat sink 10 is provided above the heat storage space 9. In addition, a large number of small holes 12 are formed through the ceiling heat shield 3 a of the heat shield 3. With the above structure, the air in the heat storage space 9 is cooled by the heat sink 10, and the air between the ceiling heat shield 3 a and the upper surface of the heat storage space 9 is heated. Because of the high temperature, heat is radiated toward the outside, and by this heat radiating action, the air in the side air 11b between the side heat shield 3b and the side plate 1a of the outer housing 1 becomes an updraft and the ceiling heat shield It is guided to 3a and dissipated. This air inflow accelerates the upward airflow from the waste heat duct 7, and the temperature of the heating element 4 as a whole is more efficiently maintained.

FIG. 4 shows a hybrid heating element housing 100A. In this case, the base case is the complete fanless heating element storage case 100 shown in FIGS. 1 to 3, but in FIG. 4, the complete fanless heating element storage case 100 shown in FIG. Is displayed. As shown in the figure, the hybrid heating element housing case 100A is configured such that a fan 13 is disposed in the vicinity of the upper opening 5 inside the inner case 2.
This fan 13 further accelerates the conduction of the heat generated from the heating element 4 to the waste heat duct 7, thereby improving the efficiency of the heat circulation.

  The hybrid heating element housing case 100A has the fan 13 as described above. However, if the fan 13 fails, the hybrid heating element housing case 100A functions as a basic completely fanless heating element housing case. Is maintained at the desired temperature. Therefore, the maintenance of the fan 13 does not need to be performed immediately, and may be performed at an arbitrary time. As a result, maintenance management can be facilitated, and maintenance costs can be significantly reduced.

  The present invention comprises the configuration and operation described above, but the present invention is not limited to the above contents, and those of the same technical category are of course applied.

  The heating element housed in the housing of the present invention is such that the temperature is raised by heat generated by an electric machine or electronic device used mainly as a communication device or information management device, but of course, it is limited to this. However, it is applicable to all devices and has a wide range of uses.

The side sectional view (a) and front sectional view (b) showing the whole structure of the complete fanless heating element storage case of the present invention. The typical perspective view for showing the main structure of the complete fanless heat generating body storage housing | casing of this invention intelligibly. The side sectional view (a) and front sectional view (b) which show another example of the whole structure of the complete fanless heating element storage case of the present invention. The front sectional view showing the whole hybrid heating element storage case of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer case 1a Side plate 1b Ceiling plate 1c Open / close door 1d Bottom plate 2 Inner case 3 Heat shield plate 3a Ceiling heat shield plate 3b Side heat shield plate 4 Heating element 5 Upper opening 6 Lower opening 7 Waste heat duct 7a Opening Part 8 Cooling duct 8a Opening 9 Heat storage space 10 Heat sink 11 Space 11a Ceiling space 11b Side space 12 Small hole 13 Fan 100 Complete fanless heating element storage case 100A Hybrid heating element storage case

Claims (6)

  A heating element hermetically sealed housing that can store a heating element in a substantially hermetically sealed state and can hold the heating element in a state that does not impair its function regardless of environmental conditions, and is not equipped with a special cooling device. A cooling duct is formed along the vertical direction between an outer casing made of a substantially sealed box and an inner surface of the outer casing that is housed in the outer casing. A heat storage space, and an inner housing that houses the heating element therein and forms an upper opening and a lower opening on the upper and lower sides thereof, and the upper opening A waste heat duct that communicates with the heat storage space is formed between the heat storage space and the cooling duct that communicates with the heat storage space communicates with the lower opening. Enclosure.   2. The complete fanless heating element according to claim 1, wherein an opening on the heat storage space side of the cooling duct is formed below an opening on the heat storage space side of the waste heat duct. Storage housing.   The complete fanless heating element housing case according to claim 1, wherein a heat sink is disposed adjacent to the cooling duct.   4. The complete fanless heating element storage casing according to claim 1, wherein the outer casing is surrounded by a heat shield plate through a space passage. 5.   A heat sink is disposed between the upper surface of the heat storage space and the canopy heat shield plate in the heat shield plate, and a plurality of small holes are formed in the canopy heat shield plate. The complete fanless heating element housing case according to claim 4.   6. A hybrid heating element housing case in which a fan is disposed in the vicinity of the upper opening of the inner case of the complete fanless heating element housing case according to claim 1.