Product storage device

Abstract

To prevent a reduction in the size of a product display chamber.SOLUTION: A product storage device 1 includes product placement shelves 11A, 11B arranged in multiple stages along a vertical direction within product display chambers 10A, 10B formed inside a device body 2, and evaporators 24A, 24B which are disposed in ventilation passages 20A, 20B located inside the device body 2 but outside the product display chambers 10A, 10B, and which cool air circulating between the product display chambers 10A, 10B and the ventilation passages 20A, 20B. Each of the evaporators 24A, 24B includes a refrigerant pipe 241 that meanders and through which a refrigerant performing heat exchange with air passes, and a plurality of holding plates 242 each having a through hole 242a through which the refrigerant pipe 241 passes to hold the refrigerant pipe 241. Shelf posts 12A, 12B for arranging the product placement shelves 11A, 11B are placed directly or indirectly on the holding plates 242 and erected in the product display chambers 10A, 10B.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a product storage device. [Background technology]

[0002] Conventionally, a product storage device that stores products stored inside in a cooled state is proposed in Patent Document 1. The product storage device proposed in Patent Document 1 has a device main body whose opening is opened and closed by a glass door, and the inside of the device main body is cooled by an evaporator, so that products placed on product storage shelves provided in multiple levels above and below are stored in a cooled state. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-80797 Summary of the Invention [Problem to be solved by the invention]

[0004] Although not explicitly stated in Patent Document 1, the shelf columns supporting the multiple product shelves generally extend to a ventilation passage formed below the product display room where the multiple product shelves are provided, and are installed on the underside of the ventilation passage. An evaporator and a circulation fan must be installed in this ventilation passage, and it is therefore necessary to secure installation space for the shelf columns as well as for the evaporator and circulation fan.

[0005] Therefore, in conventional product storage devices, the ventilation passages must be large enough, which results in the product display room being made smaller. However, this type of product display room being made smaller leads to a reduction in the number of products that can be stored, which is undesirable.

[0006] In view of the above circumstances, an object of the present invention is to provide a product storage device that can prevent the product display room from becoming smaller. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the product storage device of the present invention is a product storage device comprising a product display room defined inside the main body of the device, product storage shelves arranged in multiple tiers in the vertical direction, and an evaporator arranged inside the main body of the device in a ventilation duct that is outside the product display room and cools the air circulating between the product display room and the ventilation duct, wherein the evaporator is serpentine-shaped and comprises a refrigerant pipe through which a refrigerant passes that exchanges heat with the air, and a plurality of holding plates that hold the refrigerant pipes so that the refrigerant pipes pass through passage holes formed in each of the evaporators, and shelf columns for arranging the product storage shelves are placed directly or indirectly on the holding plates and erected in the product display room.

[0008] The present invention is also characterized in that the above-mentioned product storage device further comprises a support member provided between the shelf column and the top plate of the evaporator, for distributing the load of the shelf column.

[0009] Furthermore, in the present invention, in the above-mentioned commodity storage device, the plurality of holding plates are each formed with a flange on a periphery of the passage hole.

[0010] The present invention also provides the above-mentioned product storage device, wherein the device main body is rectangular in shape having a front opening on the front side and a rear opening on the rear side, the front opening is opened and closed by a front door, and the rear opening is opened and closed by a rear door, and the internal product storage area is divided into a front area and a rear area by a partition member, and the product display room comprises a front display room facing the front opening in the front area and a rear display room facing the rear opening in the rear area, and the ventilation The passage comprises, in the front region, a front ventilation passage that communicates with the front display chamber through a front air outlet formed at the upper edge of the front opening and a front air inlet formed at the lower edge of the front opening, and, in the rear region, a rear ventilation passage that communicates with the rear display chamber through a rear air outlet formed at the upper edge of the rear opening and a rear air inlet formed at the lower edge of the rear opening, and the evaporator comprises a front evaporator arranged in the front ventilation passage and a rear evaporator arranged in the rear ventilation passage. [Effects of the Invention]

[0011] According to the present invention, the evaporator is provided with a serpentine-shaped refrigerant pipe through which a refrigerant passes to exchange heat with the air, and a plurality of holding plates which hold the refrigerant pipes so that the refrigerant pipes pass through passage holes formed in each of the holding plates, and shelf posts for arranging product display shelves are placed directly or indirectly on the holding plates and erected in the product display room, so there is no need to secure space to install the shelf posts at the bottom of the ventilation passage, and this has the effect of preventing the product display room from being made smaller. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view showing the external configuration of a commodity storage device according to an embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view showing the external configuration of the commodity storage device according to the embodiment of the present invention. [Figure 3] FIG. 3 is a cross-sectional side view showing a schematic internal structure of a commodity storage device according to an embodiment of the present invention. [Figure 4]FIG. 4 is a perspective view showing a main part of the commodity storage device shown in FIGS. 1 to 3. As shown in FIG. [Figure 5] FIG. 5 is a perspective view showing a main part of the commodity storage device shown in FIGS. 1 to 3. As shown in FIG. [Figure 6] FIG. 6 is a perspective view showing the configuration in the vicinity of the end plate shown in FIGS. [Figure 7] FIG. 7 is a perspective view of the holding plate shown in FIGS. [Figure 8] FIG. 8 is an explanatory diagram showing the placement state of the front shelf column shown in FIGS. [Figure 9] FIG. 9 is an enlarged perspective view showing a part of FIGS. 4 and 5. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a product storage device according to the present invention will be described in detail below with reference to the accompanying drawings.

[0014] 1 to 3 show a product storage device according to an embodiment of the present invention, with FIGS. 1 and 2 being perspective views showing the exterior configuration, and FIG. 3 being a cross-sectional side view schematically showing the internal structure.

[0015] The commodity storage device 1 illustrated here is a so-called reach-in showcase that keeps stored commodities cool and stable, and includes a device main body 2.

[0016] The device main body 2 has a rectangular shape with a front opening 2A on the front side and a rear opening 2B on the rear side, and the front opening 2A is opened and closed by multiple (four in the illustrated example) front doors 3A, and the rear opening 2B is opened and closed by multiple (four in the illustrated example) rear doors 3B.

[0017] Inside the device main body 2, a machine chamber 4 located below the front opening 2A and the rear opening 2B and a product storage area 5 with an insulated structure located above the machine chamber 4 are separated from each other.

[0018] A partition member 6 is disposed in the center of the product storage area 5 in the front-to-rear direction, dividing the area into a front area 7A and a rear area 7B. A front display chamber 10A and a front ventilation passage 20A are formed in the front area 7A.

[0019] The front display room 10A is a room defined in a manner facing the front opening 2A. In this embodiment, the interior of the front display room 10A is divided into four sections in the left-right direction corresponding to the four front doors 3A, but since each section has the same configuration, only one of them will be described.

[0020] In the front display room 10A, multiple front product storage shelves 11A are arranged in multiple tiers in the vertical direction. These front product storage shelves 11A are configured by supporting flat shelf boards 112A so that they are spanned by a pair of left and right bracket members 111A engaged with front shelf columns 12A erected in a pair on the left and right at the rear side of the front display room 10A. The installation of the front shelf columns 12A will be described later.

[0021] That is, the front product storage shelf 11A is arranged by engaging the bracket member 111A with the front shelf column 12A, and products are placed on the upper surface of the shelf board 112A. A front deck 13A is provided at the bottom of the front display room 10A. The front deck 13A is used to place products, similar to the front product storage shelf 11A.

[0022] The front ventilation passage 20A is formed inside the front area 7A but outside the front display chamber 10A, and is an air passage from the front air inlet 14A to the front air outlet 15A. The front air inlet 14A is an opening for drawing air inside the front display chamber 10A, and is elongated and extends in the left-right direction. The front air inlet 14A is formed at the lower front edge of the front display chamber 10A, i.e., at the lower edge of the front opening 2A.

[0023] The front air outlet 15A is an opening for blowing air into the interior of the front display chamber 10A. The front air outlet 15A is provided to extend in the left-right direction and is provided at the upper front edge of the front display chamber 10A, i.e., at the upper edge of the front opening 2A.

[0024] Such a forward ventilation passage 20A comprises a front lower ventilation duct 21A located below and outside the front display room 10A, a front rear ventilation duct 22A located behind and outside the front display room 10A, and a front upper ventilation duct 23A located above and outside the front display room 10A, and these front lower ventilation duct 21A, front rear ventilation duct 22A and front upper ventilation duct 23A are configured to be interconnected.

[0025] A blower fan and a front evaporator 24A (not shown) are installed inside the front ventilation passage 20A. The blower fan circulates air. In the product storage device 1, when the blower fan is driven, air is drawn into the front ventilation passage 20A through the front intake port 14A and sent to the front outlet 15A, where it is blown out into the front display chamber 10A, thereby circulating air between the front display chamber 10A and the front ventilation passage 20A.

[0026] The forward evaporator 24A is connected to a refrigeration unit 30, which is composed of a compressor 31, a condenser 32, and an electronic expansion valve 33 arranged in the machine room 4, by a refrigerant pipe 34, thereby forming a refrigerant circuit that circulates the refrigerant.

[0027] Here, the compressor 31 sucks in, compresses, and discharges the refrigerant. The condenser 32 condenses the refrigerant compressed by the compressor 31. The electronic expansion valve 33 adiabatically expands the refrigerant condensed by the condenser 32.

[0028] 4 and 5, the front evaporator 24A is an elongated component with its longitudinal direction extending in the left-right direction. The front evaporator 24A includes a refrigerant pipe 241, a holding plate 242, and a top plate 243.

[0029] The refrigerant pipe 241 is a pipe through which the refrigerant passes, and extends horizontally in the left-right direction between a pair of left and right end plates 244, and curves outward from the end plates 244, thereby extending in a serpentine shape.

[0030] 6, a first refrigerant introduction pipe 341 that branches off midway and constitutes a refrigerant pipeline 34 connected to the electronic expansion valve 33 is connected to an inlet portion 241a of the refrigerant pipe 241. A first refrigerant discharge pipe 342 that constitutes the refrigerant pipeline 34 is connected to an outlet portion 241b of the refrigerant pipe 241. In this way, the refrigerant that has flowed from the first refrigerant introduction pipe 341 passes through the refrigerant pipe 241 and flows to the first refrigerant discharge pipe 342.

[0031] A plurality of (for example, three) holding plates 242 are provided, and are formed by bending a metal plate as shown in Fig. 7. The four peripheral edges of such holding plates 242 are bent, and a plurality of through holes 242a are formed. The inner diameter of each through hole 242a is slightly larger than the outer diameter of the refrigerant pipe 241, and allows the horizontally extending portion 2411 of the refrigerant pipe 241 to pass through (penetrate).

[0032] In such a holding plate 242, the thickness of the metal plate is made sufficiently large, and flanges 242b are formed around the periphery of each through hole 242a by burring, thereby improving the strength.

[0033] 8, the holding plate 242 is arranged such that the horizontally extending portions 2411 of the refrigerant pipes 241 pass through the respective through holes 242a by attaching pins 242d that pass through support holes 242c formed in the upwardly protruding portions of the four peripheral edges to the partition member 6. In other words, the holding plate 242 holds the refrigerant pipes 241 such that the horizontally extending portions 2411 of the refrigerant pipes 241 pass through the through holes 242a formed in the holding plate 242. The top plate 243 is a flat plate-like portion that forms the top surface of the front evaporator 24A.

[0034] The front evaporator 24A exchanges heat between the refrigerant that is supplied to it and passes through the refrigerant pipe 241 and the air that passes through the front ventilation passage 20A when the blower fan is driven, more specifically, the refrigerant is evaporated to cool the air that passes through the front ventilation passage 20A. This cools the products in the front display room 10A, i.e., the products placed on the front product storage shelf 11A and the front deck 13A.

[0035] A rear display room 10B and a rear ventilation passage 20B are formed in the rear area 7B. The rear display room 10B is a room defined in a manner facing the rear opening 2B. In this embodiment, the interior of the rear display room 10B is divided into four sections in the left-right direction corresponding to the four rear doors 3B, but since each section has the same configuration, only one of them will be described.

[0036] In the rear display room 10B, multiple rear product storage shelves 11B are arranged in multiple tiers in the vertical direction. These rear product storage shelves 11B are configured by supporting flat shelf boards 112B so that they are spanned by a pair of left and right bracket members 111B engaged with rear shelf columns 12B that are erected in a pair on the left and right sides at the rear side of the rear display room 10B. The installation of the rear shelf columns 12B will be described later.

[0037] That is, the rear product storage shelf 11B is arranged by engaging the bracket members 111B with the rear shelf columns 12B, and products are placed on the upper surfaces of the shelves 112B. A rear deck 13B is provided at the bottom of the rear display room 10B. The rear deck 13B is used to place products, similar to the rear product storage shelf 11B.

[0038] The rear ventilation passage 20B is formed inside the rear area 7B but outside the rear display chamber 10B, and is an air passage from the rear air inlet 14B to the rear air outlet 15B. The rear air inlet 14B is an opening for drawing air inside the rear display chamber 10B, and is elongated and extends in the left-right direction. The rear air inlet 14B is formed at the lower rear edge of the rear display chamber 10B, i.e., at the lower edge of the rear opening 2B.

[0039] The rear air outlet 15B is an opening for blowing air into the rear display chamber 10B. The rear air outlet 15B is provided to extend in the left-right direction and is provided at the upper rear edge of the rear display chamber 10B, i.e., at the upper edge of the rear opening 2B.

[0040] Such a rear ventilation passage 20B comprises a rear lower ventilation duct 21B located below and outside the rear display room 10B, a rear rear side ventilation duct 22B located behind and outside the rear display room 10B, and a rear upper ventilation duct 23B located above and outside the rear display room 10B, and these rear lower ventilation duct 21B, rear rear side ventilation duct 22B and rear upper ventilation duct 23B are configured to be interconnected.

[0041] A blower fan and a rear evaporator 24B (not shown) are installed inside the rear ventilation passage 20B. The blower fan circulates air. In the above-mentioned product storage device 1, when the blower fan is driven, air is drawn into the rear ventilation passage 20B through the rear intake port 14B and sent to the rear outlet 15B, and then blown out from the rear outlet 15B into the rear display chamber 10B, thereby circulating air between the rear display chamber 10B and the rear ventilation passage 20B.

[0042] The rear evaporator 24B is connected to the refrigeration unit 30 via a refrigerant pipe 34, thereby constituting a refrigerant circuit that circulates the refrigerant. As shown in Figures 4 and 5, the rear evaporator 24B is an elongated component with its longitudinal direction extending in the left-right direction. The rear evaporator 24B has the same configuration as the front evaporator 24A described above, except for the front-to-rear direction, and the same components as the front evaporator 24A will be described using the same reference numerals.

[0043] The rear evaporator 24B includes a refrigerant pipe 241, a holding plate 242, and a top plate 243. The refrigerant pipe 241 is a pipe through which a refrigerant passes, and extends horizontally in the left-right direction between a pair of left and right end plates 244, and also curves outward from the end plates 244, thereby extending in a serpentine shape.

[0044] 6, a second refrigerant introduction pipe 343 that branches off midway and constitutes the refrigerant pipe line 34 connected to the electronic expansion valve 33 is connected to an inlet portion 241a of the refrigerant pipe 241. A second refrigerant outlet pipe 344 that branches off midway and constitutes the refrigerant pipe line 34 and joins with the first refrigerant outlet pipe 342 at a joining point 345 is connected to an outlet portion 241b of the refrigerant pipe 241. In this way, the refrigerant that has flowed from the second refrigerant introduction pipe 343 passes through the refrigerant pipe 241 and flows to the second refrigerant outlet pipe 344.

[0045] A plurality of (for example, three) holding plates 242 are provided, and are formed by bending a metal plate. The four peripheral edges of such holding plates 242 are bent, and a plurality of through holes 242a are formed. The inner diameter of each through hole 242a is slightly larger than the outer diameter of the refrigerant pipe 241, and allows the horizontally extending portion 2411 of the refrigerant pipe 241 to pass through (penetrate).

[0046] In such a holding plate 242, the thickness of the metal plate is made sufficiently large, and flanges 242b are formed around the periphery of each through hole 242a by burring, thereby improving the strength.

[0047] The holding plate 242 is arranged such that the horizontally extending portions 2411 of the refrigerant pipes 241 pass through the respective through holes 242a by attaching pins 242d, which pass through support holes 242c formed in the upwardly protruding portions of the four peripheral edges, to the partition member 6. In other words, the holding plate 242 holds the refrigerant pipes 241 such that the horizontally extending portions 2411 of the refrigerant pipes 241 pass through the through holes 242a formed in the holding plate 242 itself. The top plate 243 is a flat plate-like portion that forms the top surface of the rear evaporator 24B.

[0048] The rear evaporator 24B exchanges heat between the refrigerant that is supplied to it and passes through the refrigerant pipe 241 and the air that passes through the rear ventilation passage 20B when the blower fan is driven, more specifically, the refrigerant is evaporated to cool the air that passes through the rear ventilation passage 20B. This cools the products in the rear display room 10B, i.e., the products placed on the rear product storage shelf 11B and the rear deck 13B.

[0049] The locations of the temperature sensors used for cooling control in the front evaporator 24A and the rear evaporator 24B will now be described with reference to Fig. 6. As such temperature sensors, a refrigerant inlet temperature sensor T1 that detects the temperature of the refrigerant inlet and a refrigerant outlet temperature sensor T2 that detects the temperature of the refrigerant outlet are provided.

[0050] The refrigerant inlet temperature sensor T1 of the front evaporator 24A is arranged at the inlet portion 241a of the refrigerant pipe 241, i.e., the connection portion with the first refrigerant introduction pipe 341, and the refrigerant inlet temperature sensor T1 of the rear evaporator 24B is arranged at the inlet portion 241a of the refrigerant pipe 241, i.e., the connection portion with the second refrigerant introduction pipe 343.

[0051] On the other hand, the refrigerant outlet temperature sensor T2 of the front evaporator 24A is not disposed in the outlet portion 241b (the connection portion with the first refrigerant discharge pipe 342) of the refrigerant pipe 241, but in the outer curved portion 2412 (hereinafter also referred to as the target curved portion 2412a) 2412 of the end plate 244 that is closest to the outlet portion 241b in the refrigerant passage path, so that the target curved portion 2412 protrudes outward from the end plate 244 more than the other curved portions 2412.

[0052] The refrigerant outlet temperature sensor T2 of the rear evaporator 24B is not located at the outlet portion 241b of the refrigerant pipe 241 (the connection portion with the second refrigerant outlet pipe 344), but is located at the outer curved portion 2412 (target curved portion 2412a) of the end plate 244 that is closest to the outlet portion 241b in the refrigerant passage path, so that the outer curved portion 2412 (target curved portion 2412a) protrudes outward from the end plate 244 more than the other curved portions 2412.

[0053] The installation of the front shelf column 12A and the rear shelf column 12B will now be described. As shown in Figures 4 and 5, the front shelf column 12A and the rear shelf column 12B are erected back to back with a partition member 6 interposed therebetween, and the three central columns, excluding those at both the left and right ends, are placed on the front evaporator 24A and the rear evaporator 24B, respectively.

[0054] 8 and 9, a support member 25, whose longitudinal direction is the front-to-rear direction, is disposed above the holding plate 242 on the top plate 243 of the front evaporator 24A, and the three central front shelf columns 12A are placed on this support member 25. In other words, the front shelf columns 12A are indirectly placed on the holding plate 242 via the support member 25 and are erected in the front display chamber 10A. Here, the support member 25 is provided between the front shelf columns 12A and the top plate 243 to distribute the load of the front shelf columns 12A.

[0055] As shown in Fig. 9, support members 25, with their longitudinal direction extending in the front-to-rear direction, are arranged above the holding plate 242 on the top plate 243 of the rear evaporator 24B, and the three central rear shelf columns 12B are placed on the support members 25. In other words, the rear shelf columns 12B are indirectly placed on the holding plate 242 via the support members 25 and are erected in the rear display chamber 10B. Here, the support members 25 are provided between the rear shelf columns 12B and the top plate 243 in order to distribute the load of the rear shelf columns 12B.

[0056] As described above, according to the product storage device 1 which is an embodiment of the present invention, the shelf columns 12A, 12B for arranging the product storage shelves 11A, 11B are indirectly placed on the holding plate 242 and erected in the product display room (front display room 10A and rear display room 10B), so there is no need to reserve space to install the shelf columns 12A, 12B at the bottom of the ventilation ducts 20A, 20B, and the product display room can be prevented from being made smaller.

[0057] In particular, in a configuration in which the front display chamber 10A and the rear display chamber 10B are separated by a partition member 6, as in this embodiment, it is possible to reduce the front-to-rear dimensions of the device main body 2 while preventing the product display chambers (front display chamber 10A and rear display chamber 10B) from becoming smaller.

[0058] According to the above-described product storage device 1, the support members 25 provided between the shelf columns 12A, 12B and the top plate 243 distribute the load of the shelf columns 12A, 12B, so that deformation of the holding plate 242 can be suppressed.

[0059] According to the above-mentioned product storage device 1, the refrigerant outlet temperature sensor T2 is arranged in the target curved portion 2412a, which solves the problem that the refrigerant outlet temperature cannot be accurately detected due to heat transfer through the confluence portion 345, and enables good cooling control.

[0060] Although the preferred embodiment of the present invention has been described above, the present invention is not limited to this and various modifications can be made.

[0061] In the above-described embodiment, the front shelf column 12A and the rear shelf column 12B are indirectly placed on the holding plate 242, but in the present invention, the shelf columns may be placed directly on the holding plate.

[0062] In the above-described embodiment, the device main body 2 has a front display chamber 10A and a rear display chamber 10B, but the present invention can also be applied to a device main body having a single product display chamber formed inside. [Explanation of symbols]

[0063] 1...Product storage device, 2...Device body, 2A...Front opening, 2B...Rear opening, 3A...Front door, 3B...Rear door, 4...Machine room, 5...Product storage area, 6...Partition member, 7A...Front area, 7B...Back area, 10A...Front Display room, 10B...Rear display room, 11A...Front product shelf, 11B...Rear product shelf, 12A...Front shelf pillar, 12B...Rear shelf pillar, 14A...Front suction port, 14B...Rear suction port, 15A...Front air outlet, 15B... Rear air outlet, 20A...front ventilation duct, 20B...rear ventilation duct, 21A...front lower ventilation duct, 21B...rear lower ventilation duct, 22A...front rear ventilation duct, 22B...rear rear ventilation duct, 23A...front upper ventilation duct, 23B...rear upper ventilation duct, 24A...front evaporator, 24B...rear evaporator, 241...refrigerant pipe, 242...retaining plate, 242a...passage hole, 243...top plate, 244...end plate, 25...support member.

Claims

1. a product display room defined inside the device body, and a product placement shelf provided in a plurality of stages along the vertical direction; an evaporator disposed in a ventilation passage that is inside the device body and outside the product display room, and that cools air circulating between the product display room and the ventilation passage; A product storage device comprising: The evaporator comprises: a serpentine refrigerant pipe through which a refrigerant passes to exchange heat with the air; a plurality of holding plates for holding the refrigerant pipes so that the refrigerant pipes pass through passage holes formed in each holding plate; Equipped with A product storage device characterized in that shelf columns for arranging the product storage shelves are placed directly or indirectly on the holding plates and erected in the product display room.

2. 2. The product storage device according to claim 1, further comprising a support member provided between the shelf column and the top plate of the evaporator for dispersing the load of the shelf column.

3. 2. The product storage device according to claim 1, wherein the plurality of holding plates have flanges formed on the peripheries of the passage holes.

4. The device body has a rectangular shape with a front opening on the front side and a rear opening on the rear side, and the front opening is opened and closed by a front door and the rear opening is opened and closed by a rear door, and the internal product storage area is divided into a front area and a rear area by a partition member, The product display room includes a front display room facing the front opening in the front area and a rear display room facing the rear opening in the rear area, The ventilation passage comprises, in the front region, a front ventilation passage communicating with the front display chamber through a front air outlet formed at an upper edge of the front opening and a front air inlet formed at a lower edge of the front opening, and, in the rear region, a rear ventilation passage communicating with the rear display chamber through a rear air outlet formed at an upper edge of the rear opening and a rear air inlet formed at a lower edge of the rear opening, The product storage device according to any one of claims 1 to 3, characterized in that the evaporator comprises a front evaporator arranged in the front ventilation duct and a rear evaporator arranged in the rear ventilation duct.

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