JP6285330B2 - Protective net and heat pump device having the protective net - Google Patents

Description

  The present invention relates to a protective net and a heat pump apparatus including the protective net. In particular, the present invention relates to an improvement in the wire pitch of the wire constituting the protective net.

  Conventionally, a fin heat exchanger is accommodated in an outdoor unit or the like of a heat pump device. Further, an outdoor air introduction opening for introducing outside air toward the fin-type heat exchanger is formed in the package of the outdoor unit, and a protective net is provided in the outside air introduction opening (for example, Patent Document 1). ). This protective net prevents workers and the like from coming into contact with the cooling fins of the fin type heat exchanger.

JP 2008-39300 A

  However, the protective net disclosed in Patent Document 1 has a uniform wire pitch. For this reason, there is a possibility that the effect of the protective net, such as preventing the cooling fins from touching even if the child is at a position where the hand of a young child can reach, is low. is there.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a protective net capable of sufficiently exerting an effect of preventing a young child from touching the cooling fin and a heat pump including the protective net. Is to present the device.

  In the protection net applied to the fin type heat exchanger, the present invention is such that the line pitch of the part from the lower side to the predetermined height in the attached state is smaller than the line pitch of the part higher than the predetermined height. It is formed.

  According to the present invention, since the line pitch of the portion from the lower side to the predetermined height in the attached state is relatively small, it is possible to sufficiently prevent the young child from touching the cooling fin. Can be demonstrated. Moreover, since the line pitch of the part more than predetermined height is comparatively large, the distribution | circulation resistance of the air which passes a protection net | network toward a fin type heat exchanger can be made small enough.

  As an example, the line pitch is a line pitch in the height direction. That is, the line pitch in the height direction in the portion from the lower side to the predetermined height in the attached state is set smaller than the line pitch in the height direction in the portion above the predetermined height.

  According to this, even when the horizontal line pitch is uniform or the horizontal line pitch is relatively large, the height direction in the portion from the lower side to the predetermined height in the attached state Since the line pitch is relatively small, it is possible to sufficiently exhibit the effect of preventing the young child from touching the cooling fins.

  Further, as an example, the line pitch is gradually increased from the lower side to the upper side in the attached state.

  According to this, while suppressing the increase in the number of the wire which comprises a protection net | network, the effect of preventing a young child from touching a cooling fin can fully be exhibited.

  Further, a heat pump device in which any one of the above-described solutions is applied to a fin-type heat exchanger is also within the scope of the technical idea of the present invention.

  Thereby, the heat pump apparatus which can fully exhibit the effect of preventing a young child from touching the cooling fin can be provided.

  In the present invention, in the protective net, the line pitch of the portion from the lower side to the predetermined height in the attached state is made smaller than the line pitch of the portion of the predetermined height or more. For this reason, the effect of preventing the child from touching the cooling fin can be sufficiently exhibited.

It is the perspective view which looked at the outdoor unit which concerns on embodiment from the front side. It is a front view of the outdoor unit concerning an embodiment. It is a right view of the outdoor unit which concerns on embodiment. It is a figure showing a protection net concerning an embodiment. It is a figure which shows the protection net which concerns on the modification 1. FIG. It is a figure which shows the protection net which concerns on the modification 2. FIG. It is a figure which shows the protection net | network concerning the modification 3. FIG. It is a figure which shows the protection net which concerns on the modification 4.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. This embodiment demonstrates the case where this invention is applied to the outdoor unit of an engine drive heat pump apparatus (henceforth only a heat pump apparatus). This heat pump device is a device that performs indoor air conditioning by operating a compressor by a gas engine housed in an outdoor unit and circulating a refrigerant in a refrigerant circuit provided between the outdoor unit and the indoor unit. It is. In addition to the air conditioning function, the heat pump device according to the present embodiment also has a function of generating power by the generator using the power of the engine by connecting a generator to the engine.

-Schematic configuration of outdoor unit-
Drawing 1 is a perspective view which looked at outdoor unit 1 concerning an embodiment from the front side. FIG. 2 is a front view of the outdoor unit 1. FIG. 3 is a right side view of the outdoor unit 1.

  As shown in FIG. 1, the outdoor unit 1 includes a package 2 as a casing formed in a substantially rectangular parallelepiped that is long in the vertical direction. Further, the package 2 has a longer width dimension in the left-right direction than a depth dimension in the front-rear direction from the front side to the back side.

  Specifically, the package 2 has a configuration in which a plurality of panels (outer panel) 21 to 25 are detachably attached to a base member and a frame (not shown).

  Specifically, as shown in FIGS. 1 and 2, two front panels 21 and 22 that cover the front side of an engine room 3 to be described later are attached to the lower side of the front of the outdoor unit 1. In addition, an outside air introduction opening 11 for introducing outside air into a heat exchange chamber 4 to be described later is provided on the upper front side of the outdoor unit 1. A protective net 5 is provided in the outside air introduction opening 11. Details of the protective net 5 will be described later.

  As shown in FIGS. 1 and 3, a lower side panel 23 that covers a side surface of the engine room 3 described later is attached to the lower side of the side surface of the outdoor unit 1. Further, on the upper side of the side surface of the outdoor unit 1, a side surface upper panel 24 that covers a side surface side of the heat exchange chamber 4 described later is attached.

  In addition, the back side of the outdoor unit 1 is also covered with a back panel (not shown) on the lower side as in the front side, and an open air introduction opening (not shown) is provided on the upper side. This outside air introduction opening is also provided with a protective net. Further, the rear panel of the outdoor unit 1 is provided with a connection port of each refrigerant pipe, a connection port of a fuel gas pipe, an electrical wiring hole, and the like extending from the indoor unit. The left side surface of the outdoor unit 1 is also covered with a side panel (not shown) in the same manner as the right side surface.

  As shown in FIG. 1, an upper panel 25 is attached to the upper part of the outdoor unit 1. Outside air outlet openings 12 are formed at three locations on the upper panel 25. An outdoor fan 41, an outdoor fan motor, and the like are disposed to face each of the outdoor air outlet openings 12. Further, the upper panel 25 is formed with an exhaust outlet (not shown) for discharging exhaust gas from the engine into the atmosphere.

  Each panel 21-25 is detachably attached to the base member and the frame by bolting. In this bolting position, the outer surfaces of the panels 21 to 25 are recessed by embossing, and a bolt hole is formed at the bottom of the recessed portion. The embossed recess dimensions are approximately the same as the height of the bolt head. For this reason, in the state which attached each panel 21-25 to the base member and the flame | frame by bolting, the surface of each panel 21-25 and the end surface of the head part of a volt | bolt will be located on the substantially identical surface. . Thereby, the head of a bolt does not protrude from the surface of each panel 21-25, and the external appearance of the outdoor unit 1 is good.

  The internal space of the package 2 is partitioned up and down by a partition, the upper side is the heat exchange chamber 4, and the lower side is the engine room 3.

  The heat exchange chamber 4 accommodates an outdoor heat exchanger, a radiator, the outdoor fan 41, an outdoor fan motor, and the like. The outdoor heat exchanger is configured by a fin-type outdoor heat exchanger, and is disposed on the front side and the back side of the heat exchange chamber 4, respectively. That is, the outdoor heat exchanger is arranged so as to face the outside air introduction opening 11 formed on each of the front side and the back side of the heat exchange chamber 4. The outdoor fan 41 generates an air flow from the outside air introduction opening 11 toward the outside air outlet opening 12. As a result, outside air is sucked from the outside air introduction openings 11 on the front surface and the back surface, heat is exchanged between the outside air and the refrigerant in the outdoor heat exchanger, and the outside air after heat exchange is blown upward from the outside air outlet opening 12. It has become.

  The outdoor heat exchanger has a configuration in which a refrigerant pipe penetrates a large number of cooling fins (for example, made of a thin aluminum plate) arranged at a predetermined interval in the horizontal direction. Thereby, the heat exchange between the refrigerant | coolant which flows through a refrigerant pipe and the air which flows between cooling fins is performed effectively.

  The engine room 3 accommodates main equipment of the heat pump device such as engine system equipment and refrigerant circuit equipment. Examples of engine system devices include an engine, an intake silencer, and an exhaust silencer. Moreover, a compressor, a receiver, etc. are mentioned as a refrigerant circuit apparatus.

−Configuration of protective net−
Next, the configuration of the protection net 5 that is a feature of the present embodiment will be described.

  FIG. 4 is a diagram showing the protective net 5. As shown in FIGS. 1, 2, and 4, the protective net 5 extends in the horizontal direction with vertical wire members 51 a to 51 f extending in the vertical direction in a state of being attached to the package 2 so as to cover the outside air introduction opening 11. The horizontal wires 52a to 52o are integrally joined by joining means such as welding. As a structure for attaching the protective net 5 to the package 2, there is a known structure in which the edge portions of the vertical wire members 51 a to 51 f and the horizontal wire members 52 a to 52 o are bolted to the edge portion of the outside air introduction opening 11. It is done. In this case, it is not necessary that all the edge portions of the vertical wire members 51a to 51f and the horizontal wire members 52a to 52o are bolted to the edge portion of the outside air introduction opening 11, and the specific vertical wire members 51a to 51f and the horizontal wire members 52a. Only the end edge of ˜52o may be bolted to the edge of the outside air introduction opening 11.

  As shown in FIG. 4, the line pitch (horizontal line pitch) of the vertical wire members 51 a to 51 f is uniform over the entire protective net 5. For example, six vertical wire rods 51a to 51f are provided, and these vertical wire rods 51a to 51f are arranged at equal intervals (equal pitch) in the horizontal direction. As a line pitch of these vertical wires 51a-51f, 400 mm is mentioned, for example. The line pitch of the vertical wires 51a to 51f is not limited to this value, and is appropriately set according to the flow resistance of the air passing through the protective net 5 toward the outdoor heat exchanger.

  On the other hand, the line pitch of the horizontal wires 52a to 52o (the line pitch in the vertical direction (height direction)) gradually increases from the lower side to the upper side of the protective net 5. For example, fifteen horizontal wires 52 a to 52 o are provided, and the line pitch of each of the horizontal wires 52 a to 52 o gradually increases from the lower side to the upper side of the protective net 5. Specifically, the line pitch (dimension P1 in FIG. 4) between the horizontal wire 52a positioned at the top and the horizontal wire 52b positioned second from the top is set to 180 mm, for example. In this case, if the wire diameter of the horizontal wires 52a to 52o is 2 mm, the distance dimension (mesh dimension) between the horizontal wire 52a and the horizontal wire 52b is 178 mm, which is set as a relatively large distance dimension. Become.

  On the other hand, the line pitch (dimension P2 in FIG. 4) between the horizontal wire 52o located at the bottom and the horizontal wire 52n located second from the bottom is set to 10 mm, for example. In this case, if the wire diameters of the horizontal wires 52a to 52o are 2 mm, the distance dimension (mesh dimension) between the horizontal wire 52o and the horizontal wire 52n is 8 mm, which is set as a very small distance dimension. Become.

  And the line pitch between each horizontal wire 52b-52n located between these becomes large gradually from the lower side to the upper side of the protective net 5. FIG. That is, in the area below the protective net 5, the line pitch of each horizontal wire is relatively small, whereas in the area above the protective net 5, the line pitch of each horizontal wire is relatively large. Yes. In other words, the protective net 5 is formed so that the line pitch of the portion from the lower side to the predetermined height in the attached state of the protective net 5 is smaller than the line pitch of the portion having the predetermined height or more.

  Specifically, as described above, when the line pitch between the horizontal wire 52a and the horizontal wire 52b is 180 mm and the line pitch between the horizontal wire 52o and the horizontal wire 52n is 10 mm, other horizontal wires are used. The line pitch between 52b-52n is set as follows, for example.

  The line pitch between the horizontal wire 52b and the horizontal wire 52c is 160 mm, the line pitch between the horizontal wire 52c and the horizontal wire 52d is 140 mm, the line pitch between the horizontal wire 52d and the horizontal wire 52e is 120 mm, and the horizontal wire The line pitch between 52e and the horizontal wire 52f is 100mm, the line pitch between the horizontal wire 52f and the horizontal wire 52g is 80mm, the line pitch between the horizontal wire 52g and the horizontal wire 52h is 60mm, and the horizontal wire 52h The line pitch between the horizontal wire 52i is 40 mm, the line pitch between the horizontal wire 52i and the horizontal wire 52j is 25 mm, the line pitch between the horizontal wire 52j and the horizontal wire 52k is 20 mm, and the horizontal wire 52k and the horizontal wire The line pitch between the horizontal wire 52l and the horizontal wire 52m is 14mm, and the line pitch between the horizontal wire 52m and the horizontal wire 52n is 12mm.

  Moreover, the height position from the ground of the horizontal wire (for example, the horizontal wire 52j) at the highest position in the range set to a line pitch (for example, a line pitch of 20 mm or less) that does not allow the hand of a young child is For example, it is about 1200 mm. This height position is the highest position within the reach of young children. For this reason, although the line pitch of the horizontal wires 52j to 52o arranged below the height position is within the reach of the hand of the young child, even for this young child, the outdoor heat exchanger It is set so that the effect of preventing the cooling fin from touching can be exhibited.

  Each dimension mentioned above is not limited to the said value, It sets suitably.

  As described above, the protective net 5 according to the present embodiment has the wire of each horizontal wire in the portion from the lower side to the predetermined height (position where the height is low and reachable by the young child) in the attached state. The pitch is relatively small. For this reason, it is possible to sufficiently exhibit the effect of preventing the young child from touching the cooling fins of the outdoor heat exchanger. Moreover, the wire pitch of each horizontal wire of the part more than predetermined height is comparatively large. For this reason, the flow resistance of the air passing through the protective net 5 toward the outdoor heat exchanger can be made sufficiently small, the amount of air passing through the outdoor heat exchanger can be sufficiently obtained, and the air and the refrigerant It is possible to secure a sufficient amount of exchange heat between the two. In addition, an increase in the number of wires as the entire protective net 5 can be suppressed.

(Modification 1)
Next, Modification 1 will be described. This modification is a modification of the wire pitch of the wire of the protective net 5. Since the other configuration is the same as that of the above-described embodiment, only the wire pitch of the wire rod of the protective net 5 will be described here.

  FIG. 5 is a diagram showing a protective net 5 according to this modification. As shown in FIG. 5, in the protective net 5 according to this modification, the line pitch (horizontal line pitch) of the vertical wire members 51a to 51f is the same as that of the above embodiment. It is even across.

  On the other hand, as the line pitch (vertical line pitch) of the horizontal wires 52a to 52p, the line pitch is set to be relatively large in the upper half area of the protective net 5, and each line pitch in this upper half area is set. Are even (dimension P3 in FIG. 5). For example, 16 horizontal wires 52a to 52p are provided, and the line pitch of the upper six horizontal wires 52a to 52f among these horizontal wires 52a to 52p is set to be relatively large, and these horizontal wires 52a The line pitch of .about.52f is uniform. For example, the line pitch is set to 100 mm.

  On the other hand, in the lower half area of the protective net 5, the line pitch is set to be relatively small, and each line pitch in the lower half area is uniform (dimension P4 in FIG. 5). For example, 16 horizontal wires 52a to 52p are provided, and the line pitch of the lower 11 horizontal wires 52f to 52p among these horizontal wires 52a to 52p is set to be relatively small, and these horizontal wires The line pitches 52f to 52p are uniform. For example, the line pitch is set to 20 mm.

  The line pitch of the horizontal wires 52a to 52p is not limited to the above value and is set as appropriate.

  Thus, the protective net 5 according to this modification has a relatively small line pitch in the lower half region. For this reason, it is possible to sufficiently exhibit the effect of preventing the young child from touching the cooling fins of the outdoor heat exchanger. In the upper half region, the line pitch is set relatively large. For this reason, the flow resistance of the air passing through the protective net 5 toward the outdoor heat exchanger can be made sufficiently small, the amount of air passing through the outdoor heat exchanger can be sufficiently obtained, and the air and the refrigerant It is possible to secure a sufficient amount of exchange heat between the two.

(Modification 2)
Next, Modification 2 will be described. This modification is also a modification of the wire pitch of the wire rod of the protective net 5. Since the other configuration is the same as that of the above-described embodiment, only the wire pitch of the wire of the protective net 5 will be described here.

  FIG. 6 is a diagram showing a protective net 5 according to this modification. As shown in FIG. 6, in the protective net 5 according to the present modification, the line pitch (vertical line pitch) of the horizontal wires 52 a to 52 k is uniform over the entire protective net 5.

  On the other hand, the line pitch (horizontal line pitch) of the vertical wires 51a to 51u is set to be relatively large in the upper half area of the protective net 5, and the line pitch in this upper half area. Are even (dimension P5 in FIG. 6). For example, eleven vertical wire rods 51a to 51k are provided in the upper half region, the line pitch of these vertical wire rods 51a to 51k is set to be relatively large, and the line pitch of these vertical wire rods 51a to 51k is It is even.

  On the other hand, in the lower half area of the protective net 5, the horizontal line pitch is set to be relatively small, and the horizontal line pitch in the lower half area is uniform (in FIG. 6). Dimension P6). For example, 21 vertical wire rods 51a to 51u are provided in the lower half region, the line pitch of these vertical wire rods 51a to 51u is set to be relatively small, and the line pitch of these vertical wire rods 51a to 51u is It is even. Specifically, the vertical wire members 51a to 51k provided in the upper half region are extended to the lower half region, and the vertical wire members 51l to 51u are arranged between the vertical wire members 51a to 51k, respectively. Accordingly, the horizontal line pitch of the lower half region is set small.

  Thus, the protective net 5 according to the present modification has a relatively small line pitch in the horizontal direction in the lower half region. For this reason, it is possible to sufficiently exhibit the effect of preventing the young child from touching the cooling fins of the outdoor heat exchanger. In the upper half region, the horizontal line pitch is set to be relatively large. For this reason, the flow resistance of the air passing through the protective net 5 toward the outdoor heat exchanger can be made sufficiently small, the amount of air passing through the outdoor heat exchanger can be sufficiently obtained, and the air and the refrigerant It is possible to secure a sufficient amount of exchange heat between the two.

(Modification 3)
Next, Modification 3 will be described. This modification is also a modification of the wire pitch of the wire rod of the protective net 5. Since the other configuration is the same as that of the above-described embodiment, only the wire pitch of the wire of the protective net 5 will be described here.

  FIG. 7 is a diagram showing a protection net 5 according to this modification. As shown in FIG. 7, the protection net 5 according to the present modification example has two protection nets 5 according to the embodiment in the lower half region between two vertical wire members 51 a to 51 f. Vertical wire rods 51g to 51p are arranged. Thereby, in the lower half area of the protective net 5, not only the vertical line pitch but also the horizontal line pitch is set to be relatively small.

  According to this configuration, in the lower half region of the protective net 5, the distance between the wires (the size of the mesh) can be reduced in both the vertical direction and the horizontal direction as compared with the above-described embodiment. For this reason, it is possible to reliably exert an effect of preventing a young child from touching the cooling fins of the outdoor heat exchanger.

(Modification 4)
Next, Modification 4 will be described. This modification is also a modification of the wire pitch of the wire rod of the protective net 5. Since the other configuration is the same as that of the first modification described above, only the wire pitch of the wire rod of the protective net 5 will be described here.

  FIG. 8 is a diagram showing a protective net 5 according to this modification. As shown in FIG. 8, two protection nets 5 according to this modification are provided between the vertical wire members 51a to 51f in the lower half region of the protection net 5 according to Modification 1. Vertical wire rods 51g to 51p are disposed. Thereby, in the lower half area of the protective net 5, not only the vertical line pitch but also the horizontal line pitch is set to be relatively small.

  According to this configuration as well, in the lower half region of the protective net 5, the distance between the wires (the size of the mesh) can be reduced in both the vertical direction and the horizontal direction, as in the third modification. For this reason, it is possible to reliably exert an effect of preventing a young child from touching the cooling fins of the outdoor heat exchanger.

  The present invention is not limited to the above-described embodiments and modifications, and can be implemented in various other forms. Therefore, this embodiment and each modification are only illustrations in all respects, and should not be interpreted in a limited manner. The scope of the present invention is indicated by the scope of claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  For example, in the above-described embodiments and modifications, the engine is a gas engine, but an engine using gasoline as a fuel or an engine using light oil as a fuel may be used.

  In the above-described embodiment and each modification, the case where the present invention is applied to an outdoor unit of a heat pump device has been described. However, various devices can be used as long as they have a protective net that is applied to a fin-type heat exchanger. The present invention is applicable.

1 Outdoor unit 5 Protective net 51 Vertical wire 52 Horizontal wire P Wire pitch

Claims (4)

In protective nets applied to fin-type heat exchangers,
A protective net characterized in that a line pitch of a portion from a lower side to a predetermined height in an attached state is formed to be smaller than a line pitch of a portion equal to or higher than a predetermined height. The protective net according to claim 1,
The protective net according to claim 1, wherein the line pitch is a line pitch in a height direction. In the protective net according to claim 1 or 2,
A protective net formed so that a line pitch gradually increases from a lower side to an upper side in a mounted state.   A heat pump device, wherein the protective net according to any one of claims 1 to 3 is applied to a fin-type heat exchanger.

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