JP2009214642A - Condenser unit of freezing device for land transportation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a condenser unit capable of removing a condenser protecting member without detaching/attaching or opening/closing a cover and of suppressing the reduction in the amount of outside air taken into condensers. <P>SOLUTION: The condenser unit accommodates its components including the condensers and is provided with a cover 13 in which ventilation holes 133 for passing the outside air through are formed at an area opposite to the condensers, filters 14 disposed in front of the condensers inside the cover 13 and capable of passing the outside air through, and filter holding brackets 15 removably holding the filters 14, wherein filter passing windows 135 are formed in the cover 13, through which the filters 14 are drawn out or inserted along the filter holding brackets 15. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a condenser unit of a refrigeration apparatus for land transportation installed outside a vehicle.

  The refrigeration system for land transportation is used to transport and deliver a cargo loaded in a container (cold storage) loaded on a loading platform of a vehicle while maintaining a low temperature. As a refrigeration system for land transportation, there are a direct connection type that obtains a driving force of a compressor from a traveling engine and a sub-engine type that includes a dedicated engine for driving the compressor. The directly connected refrigeration system for land transportation shown in FIG. 5 includes a compressor installed in an engine room (not shown), a condenser unit 110 installed in an upper part of a driver's seat (cab), and an evaporator unit installed in a container 100. The main constituent elements are 120 and a driving operation control unit installed at an appropriate place in the cab. Note that the land transportation refrigeration apparatus shown in FIG. 5 is an example, and for example, a capacitor unit may be disposed on the lower side surface (between the front and rear wheels) of the container 100. Further, the capacitor unit 110 and the evaporator unit 120 may be integrated.

  In this refrigeration system for land transportation, gaseous refrigerant is compressed by a compressor and sent to the condenser in the condenser unit 110, and the refrigerant that exchanges heat with the outside air is liquefied in this condenser. This liquid refrigerant is sent to the evaporator in the evaporator unit 120 and absorbs heat by exchanging heat with the air in the container 100. As a result, the air in the container 100 is cooled, and the liquid refrigerant evaporates by heat absorption to become a gaseous refrigerant and is sent to the compressor again. Hereinafter, such a circulation of the refrigerant is repeated to form a refrigeration cycle.

Since the visibility is poor when the capacitor is exposed, a cover is generally provided on the capacitor unit 110. This cover is also called an air-in red grill. Since the cover is located on the side of taking in the outside air into the condenser, a large number of vent holes are formed in the cover in order to take in a sufficient amount of outside air.
However, there is a problem that foreign matter enters through the vents while the vehicle is running or the fan provided in the capacitor unit 110 is in operation. Stepping stones or flying insects become this foreign object. Stepping stones that have passed through the vents hit the fins of the capacitor and damage or deform the fins. In addition, if the insects that have come through pass through the ventilation holes and adhere to the fins, the fins are corroded or clogged. If the fins are scratched, deformed, or corroded or clogged, the performance of the condenser as a heat exchanger will be reduced.

  On the other hand, the present applicant has proposed a capacitor unit in Patent Document 1 in which a capacitor protection member capable of passing outside air is provided in front of the capacitor. As an example of this, as shown in FIG. 6, a capacitor unit 110 is proposed in which a louver 115 is employed as a capacitor protection member and a cover 113 is fixed in front of the louver 115 (outside air introduction side). The capacitor unit 110 is arranged so that the louver 115 always exists at least behind the vent 114 of the cover 113. As shown in FIG. 6, the louver 115 is fixed to the casing 111 of the capacitor unit 110 by fastening together with the cover 113 with a bolt 116. A fan for taking in outside air is disposed on the back side of the capacitor 112. Patent Document 1 describes that a filter is used as an alternative to the louver 115. In the present invention, the side on which the vehicle moves forward is defined as the front, and the side on which the vehicle moves backward is defined as the rear.

JP 2001-74349 A (FIGS. 5 to 7)

By the proposal of patent document 1, the collision of the stepping stone to the capacitor | condenser 112 and adhesion of the flying insect can be prevented. However, a stepping stone may collide with the capacitor protection member such as the louver 115 and the filter, and the capacitor protection member may be damaged. In addition, insects may adhere to the capacitor protection member, and the capacitor protection member may be clogged. In order to replace the damaged capacitor protection member, it is necessary to remove the cover 113 and attach the cover 113 again. In addition, in order to prevent a reduction in the amount of outside air taken in due to clogging, it is necessary to clean the capacitor protection member. In this case, too, the capacitor protection member cannot be cleaned with the cover attached. Installation (detachment) work is necessary. Since such an operation is complicated, the capacitor protection member such as the louver 115 and the filter may be removed from the cover 113, and the capacitor protection member may be replaced or washed. If it does so, the performance as a heat exchanger of the capacitor | condenser 112 will fall.
Patent Document 1 proposes that the cover is easily opened and closed by attaching the cover via a hinge. However, since the cover has a considerable size, it takes time to open and close.
As described above, in the proposal disclosed in Patent Document 1, since it takes time to pull out the capacitor protection member from the cover, it is desired that a capacitor unit that can easily pull out the capacitor protection member from the cover is desired.

  In addition, when insects adhere to the capacitor protection member, the amount of outside air passing through the capacitor protection member decreases, so that the amount of outside air taken into the capacitor inevitably decreases. In particular, since the amount of insects attached to the capacitor protection member increases during the summer when the load on the refrigeration apparatus is large, it is also required that the condenser unit provided with the capacitor protection member be kept to a minimum in refrigeration capacity. .

  The present invention has been made in view of such a background, and can remove the capacitor protection member without removing or opening or closing the cover, and can suppress a decrease in the amount of outside air taken into the capacitor. An object is to provide a capacitor unit.

For this purpose, the present invention is a condenser unit of a refrigeration apparatus for land transportation, which is provided outside a vehicle and includes a condenser that cools and liquefies a gas refrigerant with outside air, and is a component of the condenser unit including the condenser A cover that is formed with a vent hole through which outside air passes at a position facing the capacitor, a capacitor protection member that is disposed in front of the capacitor in the cover and that allows passage of outside air, and a capacitor protection member is inserted and removed. And a guide member that holds the cover, wherein the cover is formed with a protection member passage window that passes when the capacitor protection member is inserted and removed along the guide member.
In the capacitor unit of the present invention, a protective member passage window that passes when the capacitor protective member is inserted and removed along the guide member is formed in the cover. Therefore, the capacitor protective member can be extracted outside the cover through the protective member passage window without removing the cover. In addition, since the outside air can be taken into the capacitor through the protective member passage window, it is possible to supplement the reduction in the amount of outside air taken in by the insects adhering to the capacitor protecting member.
A unit in which a capacitor unit and an evaporator unit are integrated is known, but the present invention can be applied to a capacitor unit portion of the integrated unit. Of course, when the capacitor unit and the evaporator unit are separated, it goes without saying that the present invention can be applied to a single capacitor unit.

In this invention, the position which forms a protection member passage window is arbitrary. Accordingly, the capacitor protection member is held by the guide member so that it can be inserted and removed in the width direction of the vehicle, and the protection member passage window is formed on the side wall of the cover, and the capacitor is disposed outside the cover via the protection member passage window formed on the side wall. The protective member can also be extracted. In this case, the protective member passage window can be visually recognized from the outside of the vehicle, which is not preferable in appearance. Therefore, it is preferable from the viewpoint of appearance to hold the capacitor protection member so that it can be inserted and removed in the vertical direction and to form the protection member passage window on the upper wall of the cover.
In this case, it is preferable that the protective member passage window is formed on an inclined surface that is an upper wall of the cover and descends forward in the traveling direction of the vehicle. By doing so, an increase in the amount of outside air taken in from the protective member passage window can be expected during operation of the vehicle.

  According to the present invention, the capacitor protective member can be removed outside the cover through the protective member passage window without removing or opening / closing the cover, so that the capacitor protective member can be replaced without feeling complicated. Or it can be washed. Further, the outside air can be taken into the condenser through the protective member passage window. Therefore, according to the present invention, even if insects adhere to the capacitor protection member, the capacity of the capacitor unit can be maintained.

Hereinafter, an embodiment of a condenser unit of a refrigeration apparatus for land transportation according to the present invention will be described with reference to FIGS.
1 and 2 are perspective views of a capacitor unit 10 according to the present embodiment. The condenser unit 10 is mounted on the refrigeration vehicle shown in FIG. 5, for example, and includes a compressor installed in the engine room, an evaporator unit 120 installed in the container 100, and an operation installed in an appropriate place in the cab. A refrigeration system for land transportation is configured together with an operation control unit.

  In the capacitor unit 10, a capacitor fan (not shown) and a capacitor 12 disposed to face the capacitor fan are held in a casing 11. A filter (capacitor protection member) 14 facing the capacitor 12 is disposed in front of the capacitor 12. The capacitor unit 10 includes a cover 13 that houses each component of the capacitor unit 10.

The filter 14 is made of a metal member such as a wire mesh or punching metal. This is because the filter 14 is for catching stepping stones and flying insects, but needs to have a strength that does not easily break even when the stepping stones collide. The filter 14 also has a large number of ventilation holes so that the outside air taken into the capacitor 12 can easily pass therethrough. The opening of the vent is appropriately selected from the range of 1 to 10 mm. Instead of the filter 14, for example, a louver 115 described in Patent Document 1 can be used. Regardless of the names of the filter 14, the louver 115, etc., any member that captures stepping stones and flying insects and can easily pass outside air taken into the capacitor 12 can be used and supplemented as a capacitor protection member of the present invention.
The filter 14 can be provided with a handle 141, for example, as shown in FIG.

As shown in FIG. 2, the filter 14 is held by a pair of left and right filter holders 15, 15 provided in front of the casing 11 in front of the capacitor 12. In the present embodiment, each of the two filters 14 is held by a pair of left and right filter holding fittings 15 and 15. Each of the filter holding brackets 15 and 15 has a guide rail 151 having a U-shaped cross section at the tip. The thickness (width) of the filter 14 is set slightly smaller than the groove width of the guide rail 151. Further, a locking projection (not shown) that protrudes toward the mating filter holding bracket 15 is provided at the lower end of the guide rail 151 to prevent the filter 14 from dropping from the filter holding brackets 15 and 15. is doing. The filter 14 held in this way can be inserted and removed from the filter holding brackets 15 and 15 by sliding up and down along the guide rail 151.
As shown in FIG. 4, a pressing protrusion 152 that presses the filter 14 against the inner wall of the guide rail 151 may be provided so that the filter 14 held by the filter holding brackets 15, 15 does not rattle during traveling of the vehicle. preferable.

  The cover 13 integrally formed of resin has a vent hole 133 through which outside air passes through the front wall 132 of the cover main body 131. These vent holes are formed at positions facing the capacitor 12 because the outside air taken into the capacitor 12 passes therethrough. In the case of the cover 13, the vents are designed to form two long-width vents having a large width on the outer side in the width direction and two short-width vents having a short width sandwiched between the long-width vents. Needless to say, the present invention is not limited to this embodiment.

  The cover 13 has a large opening 137 at the upper center, and a substantially U-shaped upper wall 134 is provided around the opening 137. The outside air blown out from the rear of the condenser 12 passes through the opening 137 and has a low pressure loss, and is efficiently discharged. The upper wall 134 is lowered from the rear toward the front, and the upper surface thereof is an inclined surface. A filter passage window 135 that passes when the filter 14 is inserted and removed is formed on the front side of the upper wall 134. The filter passage window 135 is opened in the upper wall 134 at a position opposite to the filter 14 held by the filter holding metal fittings 15 and 15 and having a size larger than the cross section of the filter 14. In the present embodiment, since two filters 14 are provided, a filter passage window 135 is formed corresponding to each filter 14.

In the capacitor unit 10 described above, the filter 14 capable of passing outside air is provided in front of the capacitor 12 so that foreign matters such as stepping stones and flying insects are blocked by the filter 14 and reach the capacitor 12. Can not be. As a result, it is possible to prevent the fins of the capacitor 12 from being deformed or soiled due to the foreign object.
Further, since the capacitor unit 10 is configured so that the filter 14 can be extracted without removing the cover 13 by forming the filter passage window 135 in the cover 13, the filter 14 can be easily replaced or cleaned. become.
Since the filter passage window 135 according to the present embodiment penetrates the inside and outside of the cover 13, it also contributes to the intake of outside air. It is assumed that the amount of outside air taken in through the filter 14 is reduced due to the insects adhering to the filter 14, but the outside air taken in from the filter passage window 135 can supplement this reduced amount. In particular, since the filter passage window 135 is formed on an inclined surface that descends from the rear to the front, it is easy to take in outside air.

  In the above capacitor unit 10, the filter 14 is configured to be inserted and removed in the vertical direction. However, the filter 14 can be inserted and removed in the width direction by extending the guide rails 151 and 151 in the width direction. In this case, the filter passage window 135 is provided on the side walls 136 on both sides in the width direction. Also in this embodiment, it is possible to prevent the fins of the capacitor 12 from being deformed or dirty, and the filter 14 can be easily replaced or cleaned, and the reduced amount of outside air taken in through the filter 14 can be reduced. It can be supplemented with outside air taken in from the filter passage window 135.

It is a capacitor | condenser unit by this Embodiment, Comprising: It is a perspective view which shows the state in which the cover was attached. It is a capacitor unit by this Embodiment, Comprising: It is a perspective view which shows the state which removed the cover. It is a front view which shows the example of the capacitor | condenser protection member used for the capacitor | condenser unit by this Embodiment. It is a perspective view which shows the example of the guide rail used for the capacitor | condenser unit by this Embodiment. It is a perspective view which shows the vehicle equipped with the refrigeration apparatus for land transportation. It is a perspective view which shows the capacitor | condenser unit described in the cited reference 1.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Capacitor unit, 11 ... Casing, 12 ... Capacitor, 13 ... Cover, 131 ... Cover main body, 133 ... Vent, 135 ... Filter passage window, 14 ... Filter, 15 ... Filter holding bracket, 151 ... Guide rail, 152 ... Pressing protrusion

Claims (3)

A condenser unit of a refrigeration system for land transportation, which is provided outside a vehicle and includes a condenser that cools and liquefies a gas refrigerant with outside air,
A cover that contains the components of the capacitor unit including the capacitor, and in which a vent hole through which outside air passes is formed at a position facing the capacitor;
A capacitor protection member that is disposed in front of the capacitor in the cover and that allows the outside air to pass through;
A guide member that holds the capacitor protection member in a removable manner, and
2. The capacitor unit according to claim 1, wherein the cover is formed with a protection member passage window that passes when the capacitor protection member is inserted and removed along the guide member. The capacitor protection member is held by the guide member so that it can be inserted and removed vertically.
The capacitor unit according to claim 1, wherein the protective member passage window is formed on an upper wall of the cover.   3. The capacitor unit according to claim 2, wherein the protection member passage window is formed on an inclined surface that is an upper wall of the cover and descends forward in a traveling direction of the vehicle.

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