CN109549402B

CN109549402B - Display cabinet

Info

Publication number: CN109549402B
Application number: CN201810833746.9A
Authority: CN
Inventors: 伊豆野优作; 宫田秀一
Original assignee: Fuji Electric Co Ltd
Current assignee: Fuji Electric Co Ltd
Priority date: 2017-09-27
Filing date: 2018-07-26
Publication date: 2024-01-19
Anticipated expiration: 2038-07-26
Also published as: JP6933075B2; JP2019058453A; CN109549402A

Abstract

A showcase which can not only well maintain commodities in a storage area in one temperature state but also well maintain commodities in different temperature states. In a display case having a receiving area, an air circulation element, and an evaporator, comprising: a plurality of back baffles which are respectively arranged on the back plate of the storage area in a mode of swinging back and forth, and a part of a back opening formed on the back plate is opened or closed by swinging; an intermediate duct that vertically partitions the storage area when installed so that any of the back side flaps swings rearward to penetrate a part of the back side opening; and a flow path switching element that blows out air cooled by the evaporator from a vent hole formed in a back baffle below the intermediate duct toward the storage area when the intermediate duct is attached, and that restricts the air cooled by the evaporator from being blown out from the vent hole and switches the air flow path to be blown out from the air outlet when the intermediate duct is not attached.

Description

Display cabinet

Technical Field

The present invention relates to a showcase, and more particularly, to a showcase for maintaining a commodity which is an object of storage in a desired temperature state.

Background

Conventionally, patent document 1 proposes a showcase for maintaining a commodity to be stored in a desired temperature state. In the showcase proposed in patent document 1, a plurality of commodity placement shelves are provided in layers in the up-down direction in a storage area of a case body having an opening formed in the front surface, and commodities are placed on each commodity placement shelf for display.

In addition, in the housing main body, a flow path of air sucked through a suction port provided at a front lower portion of the storage area is formed at a position other than the storage area, and an evaporator is provided in the air flow path at an upper side of the storage area.

The air passing through the air flow path is cooled by the evaporator and then blown out from a blow-out port provided in the front upper portion of the storage area. The air blown out from the air outlet is circulated through the air flow path sucked by the suction port, and the internal air in the storage area is cooled to adjust and maintain the commodity placed on the commodity shelf at a desired temperature.

In the showcase, the evaporator is provided above the storage area, and therefore, there is an advantage that the capacity of the storage area can be made sufficiently large and the display space for the commodity can be sufficiently ensured, as compared with the case where the evaporator is provided on the back side and the lower side of the storage area.

Prior art literature

Patent literature

Patent document 1: japanese patent No. 3695885

However, in the showcase proposed in patent document 1, since the suction port is provided at the front lower portion of the storage area, the air outlet is provided at the front upper portion of the storage area, and the evaporator is provided above the storage area, air is sucked from the suction port into the air flow path on the rear surface side of the storage area and passes through the evaporator. That is, only air before being cooled by the evaporator passes through the air flow path on the back surface side of the storage area.

Therefore, even if the storage area is partitioned vertically by the partition member such as the intermediate duct, and the air flow path on the back side of the storage area is partitioned vertically by the partition member, it is difficult to introduce the air passing through the evaporator to only one side, and as a result, it is difficult to keep the commodity in the storage area in a different temperature state.

Disclosure of Invention

The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a showcase which can satisfactorily maintain not only commodities in a storage area in one temperature state but also commodities in different temperature states.

In order to achieve the above object, the showcase of the present invention comprises: a storage area formed in the case main body for storing the commodity; an air circulation element having an air flow path provided in the housing main body so as to communicate with the storage area through the suction port and the air outlet port, the air circulation element circulating air between the air flow path and the storage area; and a temperature control element that controls air circulated by the air circulation element to a predetermined temperature, wherein the showcase maintains the commodity in a desired temperature state, the showcase comprising: a plurality of back flaps provided on a back plate configured to be a back surface of the storage area so as to swing back and forth, and configured to open or close a portion of a back opening formed below a predetermined height level of the back plate by swinging; an intermediate duct that is installed so that a portion of the rear surface opening is penetrated by swinging an arbitrary rear surface baffle plate rearward, and that vertically partitions the storage area; and a flow path switching element that, when the intermediate duct is attached, blows out air conditioned by the temperature adjusting element from a vent hole formed in the back side baffle below the intermediate duct toward the storage area, and when the intermediate duct is not attached, restricts the air conditioned by the temperature adjusting element from being blown out from the vent hole and switches the air flow path to be blown out from the air outlet.

In the showcase, the air flow path may include: a first back surface flow path that passes air conditioned by the temperature adjusting element downward on a back surface side of the storage area; and a second back surface flow path which is provided between the back surface plate and the first back surface plate flow path, is partitioned by a partition plate in a state where a lower end portion and a lower end portion of the first back surface flow path communicate with each other, and passes air upward toward the air outlet, and is partitioned up and down by an intermediate duct when the second back surface flow path is installed so that an arbitrary back surface baffle swings backward to penetrate a part of the back surface opening.

In the showcase, when the intermediate duct is attached, the flow path switching element closes a partition opening formed in the partition plate and located above the rear surface opening, so that air passing through the first rear surface flow path downward passes through the lower end portion and passes through the second rear surface flow path upward, and when the intermediate duct is not attached, the flow path switching element opens the partition opening, so that air passing through the first rear surface flow path passes through the partition opening, flows into the second rear surface flow path and passes upward through the second rear surface flow path.

In the showcase according to the present invention, the flow path switching element includes: a duct shutter provided so as to be swingable between a first posture in which the partition opening is opened and a downstream side portion of the partition opening in the first back surface flow path is closed, and a second posture in which the partition opening is closed and the downstream side portion is opened; and a link mechanism that normally maintains the duct shutter in a first posture, and presses the back shutter that swings rearward when the intermediate duct is attached, thereby bringing the duct shutter into a second posture.

In addition, in the showcase, the air circulation means includes: a first air circulation element having a first air flow path that is provided inside the case main body so as to communicate with the storage area through a suction port formed in a front lower portion of the storage area and a blow-out port formed in a front upper portion of the storage area, the first air circulation element circulating air between the first air flow path and the storage area; and a second air circulation element having a second air flow path that is provided in the housing main body so as to be in communication with the storage area through the suction port and the air outlet port and is separated from the first air flow path, the second air circulation element circulating air between the second air flow path and the storage area, the temperature adjustment element being an element that adjusts air circulated by the first air circulation element to a predetermined temperature, the intermediate duct being mounted so as to penetrate the back panel, thereby cutting off the first air flow path and vertically partitioning the storage area to be at different temperatures.

According to the present invention, when the intermediate duct is attached, the flow path switching element blows out the air conditioned by the temperature conditioning element from the vent hole formed in the back side baffle below the intermediate duct to the storage area, and when the intermediate duct is not attached, the flow path switching element restricts the air conditioned by the temperature conditioning element from being blown out from the vent hole and switches the air flow path to be blown out from the air outlet, so that the effect is obtained that not only the commodity in the storage area can be maintained in one temperature state but also in a different temperature state.

Drawings

Fig. 1 is a front view of a display case showing an embodiment of the present invention.

Fig. 2 is a perspective view of a display case showing an embodiment of the present invention.

Fig. 3 is a schematic representation of the display case of fig. 1 and 2, in cross-section along line A-A of fig. 1.

Fig. 4 is a schematic representation of the display case of fig. 1 and 2, in cross-section along line B-B of fig. 1.

Fig. 5 is a front view showing the back plate shown in fig. 1 to 4.

Fig. 6 is a perspective view showing the back plate shown in fig. 1 to 4 in an enlarged manner.

Fig. 7 is a perspective view showing the back side baffle shown in fig. 5 and 6.

Fig. 8 is a plan view schematically showing the guide-out flow path shown in fig. 3 and 4.

Fig. 9 is a perspective view schematically showing the guide-out flow path shown in fig. 3 and 4.

Fig. 10 is a perspective view showing the under-shelf duct shown in fig. 2.

Fig. 11 is a cross-sectional view showing a lower portion of an arbitrary commodity shelf.

Fig. 12 is a cross-sectional view showing a lower portion of an arbitrary commodity shelf.

Fig. 13 is a perspective view showing the sheet metal member shown in fig. 11 and 12.

Fig. 14 is a perspective view showing the flow path switching element shown in fig. 3.

Fig. 15 is a side view showing the flow path switching element shown in fig. 3.

Fig. 16 is a sectional view showing the vicinity of the partition opening shown in fig. 3 and 4 in an enlarged manner.

Fig. 17 is a cross-sectional view showing a state in which the intermediate duct is inserted into the lower portion of any commodity shelf.

Fig. 18 is a sectional view showing the vicinity of the partition opening shown in fig. 3 and 4 in an enlarged manner.

Symbol description

1. Casing body

2. Storage area

3. Back panel

3a back side opening

4. Goods shelf

9a suction inlet

9b air outlet

10. Back baffle

11b vent hole

20. Air circulation unit

21. Leading-in flow path

22. Guide-out flow path

30. First air circulation element

30a right air flow path

30b right circulation fan

35. Evaporator

40. Second air circulation element

40a left air flow path

40b left circulating fan

50. Rectifying mechanism

51. First air deflector

52. Second air deflector

53. Air guide hole

54. Through hole

60. Goods shelf lower pipe

70. Metal plate component

71. Mounting part

72. Upper extension part

73. Front extension part

80. Flow path switching element

81. Pipeline baffle

82. Link mechanism

90. Intermediate pipeline

S-shaped airtight space

Detailed Description

Hereinafter, preferred embodiments of the showcase of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 and 2 are respectively used to show a showcase according to an embodiment of the present invention, and fig. 1 is a front view and fig. 2 is a perspective view. Fig. 3 and 4 are schematic representations of the display case of fig. 1 and 2, fig. 3 being a sectional view taken along line A-A of fig. 1, and fig. 4 being a sectional view taken along line B-B of fig. 1. The showcase illustrated here is installed in a store such as a supermarket or a convenience store, for example, and accommodates a commodity to be sold, and has a case body 1.

The housing main body 1 includes: the bottom surface portion 1A, the rear surface portion 1B, and the top surface portion 1C form a storage area 2 having front and left and right side surfaces open in a portion surrounded by the bottom surface portion 1A, the rear surface portion 1B, and the top surface portion 1C, and are provided with an air circulation unit 20, a below-shelf duct 60, a flow path switching element 80, and an intermediate duct 90.

The storage area 2 is provided with a commodity shelf 4 having a rear surface constituted by a rear surface plate 3 as the front surface of the rear surface portion 1B and having a plurality of layers (seven layers in the example of the figure). The commodity shelf 4 is a conventional technology, and is supported by a pair of left and right brackets 6 attached to shelf supports 5 standing on both left and right side regions of the back plate 3, and the shelf plate 8 is supported between the pair of left and right brackets 6 via a slider 7. The commodity placing shelf 4 is used for placing and displaying commodities on the upper surface of the shelf board 8. The slider 7 supports the deck plate 8 so as to be slidable in the front-rear direction with respect to the bracket 6.

A suction port 9a is formed in the front lower portion of the storage area 2, i.e., in the front upper portion of the bottom surface portion 1A, and a blowout port 9b is formed in the front upper portion of the storage area 2, i.e., in the front lower portion of the top surface portion 1C.

The suction port 9a is an opening for sucking air in the storage area 2, and extends in the left-right direction of the storage area 2. The air outlet 9b is an opening for blowing air into the storage area 2, and extends in the left-right direction of the storage area 2. A rectifying member 9c having a honeycomb structure, for example, is attached to the air outlet 9b.

As can be seen from the figure, the back plate 3 is formed to be inclined upward and gradually rearward. As shown in fig. 5 and 6, a rectangular back surface opening 3a is formed in the back surface 3 below a predetermined height level, that is, below the commodity shelf 4 on the fourth layer from above, and a plurality of back surface baffles 10 are provided so as to swing in the front-rear direction.

Fig. 7 is a perspective view showing the back surface baffle 10 shown in fig. 5 and 6. The back cover 10 is a member formed by bending, for example, a steel plate, and is a long member having a longitudinal direction in the left-right direction. The back side fence 10 includes a fence base 11, a fence rear extension 12, and a fence contact portion 13.

The shutter base 11 is a flat plate-shaped portion having a curled shutter shaft portion 11a at an upper end portion, and a plurality of ventilation holes 11b are formed in a left-right direction (longitudinal direction). The vent hole 11b is formed so as to be sparse in the central region and dense in the right and left end regions with respect to the baffle base 11. The baffle post-extension 12 is a portion that extends rearward from the lower end portion of the baffle base 11, then bends downward, and then extends rearward. The baffle contact portion 13 is a portion extending upward from the rear end portion of the baffle rear extension 12.

The back plate 10 is provided so as to swing in the front-rear direction by inserting both left and right end portions of the plate shaft portion 11a into holes, not shown, formed in both left and right side edge portions of the back opening 3a of the back plate 3, and pivotally supporting the plate shaft portion to swing around the axis of the plate shaft portion 11 a. As shown in fig. 5 and 6, the back cover 10 is provided in the back opening 3a so as to be arranged vertically, and the back cover 10 normally closes the back opening 3 a. The back cover 10 opens or closes a part of the back opening 3a by swinging.

As shown in fig. 3 and 4, the air circulation unit 20 includes an introduction flow path 21, a first air circulation element 30, a second air circulation element 40, and a discharge flow path 22.

The introduction flow path 21 is provided in the bottom surface portion 1A so as to extend in the front-rear direction. The introduction passage 21 communicates with the suction port 9 a.

The first air circulation element 30 is configured to include a right air flow path (first air flow path) 30a and a right circulation fan 30b.

The right air flow path 30a includes a first right back side flow path 31, a right upper side flow path 32, a second right back side flow path (first back side flow path) 33, and a third right back side flow path (second back side flow path) 34.

The first right back surface side channel 31 is provided on the rear surface portion 1B so as to extend in the up-down direction. The first right back surface side flow path 31 is provided with a right inlet 31a as an inlet of the right air flow path 30a at a lower portion thereof, and the right inlet 31a faces the inlet flow path 21. That is, the first right back surface side channel 31 passes through the introduction channel 21 and communicates with the suction port 9 a.

The upper right flow path 32 is provided on the top surface portion 1C and communicates with the first right rear surface side flow path 31. The second right back surface side channel 33 extends in the up-down direction on the back surface portion 1B and communicates with the right upper side channel 32. The second right back surface side channel 33 extends forward of the first right back surface side channel 31 and is separated from the first right back surface side channel 31.

The third right back surface side channel 34 extends in the up-down direction in the back surface portion 1B. The third right back surface side channel 34 extends between the second right back surface side channel 33 and the back surface plate 3, is partitioned by the partition plate 14, and communicates with the second right back surface side channel 33 at the lower end portions thereof, and communicates with the storage area 2 through the vent hole 11b formed in the back surface baffle 10. The third right back surface side passage 34 is provided with a right outlet port 34a as an outlet port of the right air passage 30a at an upper portion thereof, and the right outlet port 34a faces the outlet passage 22.

The right circulation fan 30b is driven to circulate air in accordance with a command from a control element, not shown, and is disposed at a predetermined portion of the first right rear surface side flow path 31. In the present embodiment, the right circulation fan 30b is disposed at a predetermined portion of the first right rear surface side flow path 31, but in the present invention, the disposed portion of the right circulation fan 30b is not particularly limited, and may be disposed at any position as long as the function of the right circulation fan 30b described later can be exhibited.

The second air circulation element 40 is configured to include a left air flow path (second air flow path) 40a and a left circulation fan 40b.

The left air flow path 40a includes a left rear surface side flow path 41. The left rear surface side channel 41 is provided so as to be spaced apart from the first right rear surface side channel 31 on the left side of the first right rear surface side channel 31 in the rear surface portion 1B and extend in the up-down direction. The left rear surface side flow path 41 is provided with a left Fang Dao inlet 41a as an inlet of the left air flow path 40a at a lower portion thereof, and the left Fang Dao inlet 41a faces the introduction flow path 21. That is, the left rear surface side channel 41 passes through the introduction channel 21 and communicates with the suction port 9 a. The left rear surface side flow path 41 is provided with a left outlet 41b at an upper portion thereof, the left outlet 41b being an outlet of the left air flow path 40a and being located further to the left than the right outlet 34a, and the left outlet 41b facing the outlet flow path 22.

The left circulation fan 40b is a member that is driven to circulate air in accordance with a command from a control element, not shown, and is disposed at a predetermined portion of the left rear surface side flow path 41. In the present embodiment, the left circulation fan 40b is disposed at a predetermined portion of the left rear surface side flow path 41, but the disposition portion of the left circulation fan 40b is not particularly limited in the present invention, and may be disposed at any position as long as the function of the left circulation fan 40b described later can be exhibited.

The lead-out flow path 22 is provided on the top surface portion 1C so as to extend in the front-rear direction. The outlet passage 22 communicates the right outlet 34a with the air outlet 9b, and communicates the left outlet 41b with the air outlet 9b. That is, the delivery flow path 22 is a common flow path through which the air passing through the right air flow path 30a and the air passing through the left air flow path 40a circulate to the air outlet 9b. Thereby, the right air flow path 30a communicates with the storage area 2 through the suction port 9a and the blowout port 9b, and the left air flow path 40a communicates with the storage area 2 through the suction port 9a and the blowout port 9b.

The first air circulation element 30 constituting the air circulation unit 20 is the following: the right circulation fan 30b is driven to suck the air in the storage area 2 through the suction port 9a, and after the sucked air is circulated through the introduction flow path 21, the air is sent out to the vent hole 11b via the right air flow path 30a or the air is sent out to the blowout port 9b via the right air flow path 30a and the discharge flow path 22. The air is blown into the storage area 2 through the vent hole 11b or the air outlet 9b, and circulated between the inside and the outside of the storage area 2.

Further, the second air circulation element 40 is the following: the left circulation fan 40b is driven to suck the air located in the storage area 2 through the suction port 9a, and the sucked air is circulated through the introduction flow path 21, and then sent out to the air outlet 9b through the left air flow path 40a and the discharge flow path 22, and the air is blown out into the storage area 2 through the air outlet 9b, thereby circulating the air between the inside and the outside of the storage area 2.

An evaporator (temperature adjusting element) 35 is provided in the upper right side flow path 32 of the right air flow path 30a. That is, the evaporator 35 is disposed above the storage area 2. The evaporator 35 is configured as a refrigerant circulation element for circulating a refrigerant together with a compressor, a condenser, and an expansion mechanism, which are not shown. Here, the compressor is a member for compressing a refrigerant. The condenser is a member that condenses a refrigerant compressed by the compressor. The expansion mechanism is a mechanism that expands the refrigerant condensed by the condenser in a low-temperature and low-pressure state by heat insulation. The evaporator 35 is a device that exchanges heat between air passing through the upper right flow path 32 from the rear to the front and the refrigerant thermally insulated and expanded by the expansion mechanism by driving the upper right circulation fan 30b, and more specifically, evaporates the refrigerant to cool the air passing through the upper right flow path 32. The refrigerant evaporated by the evaporator 35 returns to the compressor again and is compressed.

As shown in fig. 8 and 9, the guide passage 22 is provided with a rectifying mechanism 50. The rectifying mechanism 50 includes a first air deflector 51 and a second air deflector 52.

The first air guide plate 51 is an elongated member made of, for example, a steel plate. The first air guide plate 51 is provided on the front side of the guide passage 22, that is, in the vicinity of the air outlet 9b so that the longitudinal direction is in the left-right direction. The first air guide plate 51 is provided with a plurality of air guide holes 53. More specifically, the first air guide plate 51 is formed with a plurality of air guide holes 53 so that the central region is formed to be sparse and the left and right end portions are formed to be dense. The air guide hole 53 is a long hole having a longitudinal direction in the vertical direction, and the dimensions thereof are substantially the same.

The second air guide plate 52 is provided on the rear side of the first air guide plate 51, that is, on the upstream side of the first air guide plate 51, and includes a pair of right air guide plates 52a and left Fang Dao air guide plates 52b.

The right air guide plate 52a is provided further rearward than the right end portion of the first air guide plate 51. More specifically, the right air guide plate 52a is provided so as to be inclined gradually forward as going to the left, that is, so as to extend toward the center region of the first air guide plate 51 as going downstream. The right air guide plate 52a has a plurality of through holes 54 formed in the left-right direction.

The left Fang Dao air foil 52b is provided further rearward than the left end portion of the first air foil 51. More specifically, the left Fang Dao air plate 52b is provided so as to be inclined gradually forward as going rightward, that is, so as to extend toward the central region of the first air guide plate 51 as going downstream. The left Fang Dao damper 52b has a plurality of through holes 54 formed in the left-right direction.

Fig. 10 is a perspective view showing the shelf lower pipe 60 shown in fig. 2. As shown in fig. 10, the shelf lower duct 60 is formed by bending, for example, a steel plate, and is formed by integrally forming a duct base end portion 61 and a duct tip end portion 62.

The duct base is a flat plate-like portion having a curled duct shaft portion 61a at a front end portion. The duct distal end portion 62 is a flat plate-like portion that gradually slopes rearward as going downward from the rear end edge portion of the duct proximal end portion 61.

As shown in fig. 11 and 12, the above-mentioned lower shelf pipe 60 is provided between the commodity shelf 4 on the fourth layer from the commodity shelf 4 on the upper layer and the lower part of the commodity shelf 4 on the lowest layer. That is, both end portions of the duct shaft portion 61a are inserted into holes, not shown, formed in the brackets 6, whereby the shelf lower duct 60 is installed between the brackets 6 so as to swing back and forth around the axis of the duct shaft portion 61 a.

In a normal state, a part of the lower surface of the duct base end portion 61 is in contact with the upper limiting piece 65 provided between the brackets 6, and a part of the front surface of the duct tip end portion 62 is in contact with the lower limiting piece 66 provided between the brackets 6, so that the shelf lower duct 60 is restricted from swinging forward, and the insertion opening 67 formed by the rear end edge portion of the upper limiting piece 65 and the upper edge portion of the lower limiting piece 66 is closed.

The above-described shelf lower duct 60 is a member for guiding the air blown out from the vent hole 11b of the back side flap 10 to the vicinity of the lower surface of the shelf plate 8 of the commodity shelf 4 when the insertion opening 67 is closed.

A metal plate member 70 is attached to the pallet lower side duct 60, for example, by welding. Fig. 13 is a perspective view showing the sheet metal member 70. As shown in fig. 13, the metal plate member 70 is formed by bending, for example, a steel plate, and is configured by integrally forming the mounting portion 71, the upward extending portion 72, and the forward extending portion 73.

The mounting portion 71 is a flat plate-like portion mounted on the rear surface of the upper portion of the duct front end portion 62 by welding or the like. The upper extension 72 is a curved portion extending forward in fig. 11 and 12 from the upper end edge of the mounting portion 71, and gradually slopes forward as it goes upward. A plurality of through openings 72a are formed in the left-right direction in the upper extension 72. The forward extension 73 is a flat plate-like portion extending forward in fig. 11 and 12 from the upper end edge portion of the upper extension 72.

The metal plate member 70 has a size such that the upper surface of the front extension 73 can abut against the lower surface of the shelf plate 8 of the commodity shelf 4 when the shelf lower pipe 60 is mounted in a normal state, and a heat insulating material 75 having softness is mounted on the upper rear surface of the upper extension 72 over the entire length in the lateral direction and mounted on the entire length in the lateral direction of the lower surface of the front extension 73.

As shown in fig. 3, the flow path switching element 80 is provided in the right air flow path 30a, and as shown in fig. 14 and 15, the flow path switching element 80 includes a duct shutter 81 and a link mechanism 82.

The duct shutter 81 is an elongated member having a longitudinal direction in the left-right direction. As shown in fig. 16, the duct shutter 81 is provided so as to be inserted into the partition opening 14a formed in the partition plate 14, and is configured such that a base 81a, a first acting portion 81b, and a second acting portion 81c are integrally formed. Here, the partition opening 14a is a member that communicates the second right back surface side flow path 33 with the third right back surface side flow path 34 above the back surface opening 3a in the partition plate 14.

The base 81a is a portion in which both right and left end portions are pivotally supported so as to be swingable in the front-rear direction by baffle support pieces 83 attached to both side surfaces of the third right rear surface side flow path 34. The first acting portion 81b is a portion extending so as to gradually incline downward from the rear end edge portion of the base portion 81a rearward in fig. 16. The second acting portion 81c is a portion extending so as to gradually incline upward as going forward from the front end edge portion of the base portion 81a in fig. 16.

The link mechanism 82 is an elongated member extending in the up-down direction at a central portion of the third right rear surface side flow path 34 in the left-right direction. The link mechanism 82 is formed in a コ shape when viewed from above, and movement in the left-right direction and the front-rear direction is restricted by a restricting plate 84 inserted into the interior. That is, the link mechanism 82 is allowed to move in the up-down direction.

The link mechanism 82 has a plurality of engagement pieces 82a protruding forward in the vertical direction. The engaging pieces 82a are provided only as many as the back panel 10, and advance and retreat on the swing locus of the back panel 10.

The shaft-like portion 82b of the link mechanism 82 formed at the upper end portion is inserted into a long hole 85a of a locking piece 85 attached to the front surface of the second acting portion 81c of the duct shutter 81, and the link mechanism 82 is rotatably coupled to the duct shutter 81.

In the flow path switching element 80 having the above-described structure, the duct shutter 81 is in a posture of opening the partition opening 14a by the self weight of the link mechanism 82 in a state where neither of the back shutters 10 swings to close the back opening 3a, as shown in fig. 16. In the above posture, the first acting portion 81b closes the downstream side portion of the second right back surface side flow path 33 from the partition opening 14a, and the second acting portion 81c closes the upstream side portion of the third right back surface side flow path 34 from the partition opening 14a.

The intermediate pipe 90 is a known technique, and is formed in a substantially flat plate shape as a whole. The intermediate duct 90 is a member detachably provided to the showcase. As shown in fig. 3 and 4, when attached to the showcase, the intermediate duct 90 is attached to the back panel 3 so as to penetrate a part of the back opening 3a opened by swinging the optional back panel 10 rearward, and is a member that vertically partitions the storage area 2 and the third right back side flow path 34. A notch, not shown, is formed in the rear end portion of the intermediate duct 90, through which the link mechanism 82 is inserted.

The intermediate duct 90 has a duct portion 91 extending in the front-rear direction, and has a rear end opening 91a and an intermediate blow-out port 91b. The rear end opening 91a is formed in the lower surface of the rear end portion so as to face the third right rear surface side flow path 34 when attached to the rear plate 3. The intermediate air outlet 91b is formed on the lower surface of the front end portion of the intermediate duct 90, and is an opening for blowing out the air passing through the duct 91.

In addition, as shown in fig. 17, when the intermediate duct 90 is attached as described above, the shelf lower duct 60 is pressed by the intermediate duct 90 inserted from the front, and swings rearward about the axis of the duct shaft portion 61a, so that the insertion opening 67 is opened, and the intermediate duct 90 is allowed to pass through and be inserted into the insertion opening 67. At this time, the tweed 74 of the metal plate member 70 attached to the under-shelf duct 60 is in contact with the tweed 8a of the shelf plate 8 attached to the commodity shelf 4, and the heat insulating material 75 is in contact with the upper limiting piece 65, so that a closed space S is formed between the intermediate duct 90 and the commodity shelf 4 directly above.

When the intermediate duct 90 is attached, the back panel 10 pressed by the intermediate duct 90 swings rearward. As shown in fig. 18, the shutter contact portion 13 of the rear shutter 10 that swings rearward contacts the engagement piece 82a of the link mechanism 82, and presses the engagement piece 82a. By this, the link mechanism 82 moves upward, the duct shutter 81 rotatably coupled to the link mechanism 82 swings rearward, and the front end portion of the second acting portion 81c abuts against the front surface of the opening upper edge portion of the partition opening 14a, thereby closing the partition opening 14a. In the above case, the first acting portion 81b abuts on the partition plate 14, and opens the second right back surface side flow path 33, and the second acting portion 81c opens the third right back surface side flow path 34.

In the showcase having the above configuration, the storage area 2 can be cooled to cool the commodity placed on the commodity placement rack 4 without installing the intermediate duct 90 as described below.

In the case where the intermediate duct 90 is not installed, the back openings 3a are closed by the respective back baffles 10, and the partition openings 14a are opened. Further, the downstream side of the partition opening 14a in the second right back surface side flow path 33 is closed by the first acting portion 81b of the duct shutter 81, and the upstream side of the partition opening 14a in the third right back surface side flow path 34 is closed by the second acting portion 81c of the duct shutter 81.

In the above state, the driving of the left circulation fan 40b is stopped and the right circulation fan 30b and the compressor are driven, so that the air sucked through the suction port 9a reaches the right air flow path 30a after passing through the introduction flow path 21. In the right air flow path 30a, the air passes upward through the first right back side flow path 31, and then enters the right upper side flow path 32, and is cooled by the evaporator 35. The air cooled by the evaporator 35 reaches the second right back surface side flow path 33 from the right upper side flow path 32, passes through the second right back surface side flow path 33 downward, reaches the third right back surface side flow path 34 through the opened partition opening 14a, and passes through the third right back surface side flow path 34 upward. The air passing through the third right back surface side channel 34 passes through the right outlet 34a to reach the outlet channel 22, and is blown out from the air outlet 9 to the storage area 2, flows toward the air inlet 9a in the storage area 2, forms an air curtain, and cools the internal atmosphere of the storage area 2, thereby cooling the commodity placed on the commodity shelf 4. That is, the commodity in the storage area 2 can be kept in a single temperature state.

However, since the rectifying mechanism 50 is provided in the delivery passage 22, the air delivered from the right delivery port 34a disposed at a position offset to the right is utilized as the right air guide plate 52a of the second air guide plate 52, and a part thereof passes through the passing holes 54, and most thereof flows toward the central region of the first air guide plate 51. Since the air guide holes 53 are formed in the first air guide plate 51 so as to be sparse in the central region and dense in the left and right end portions, air passing through the central region of the first air guide plate 51 and air passing through the passing holes 54 pass through the air guide holes 53, pass through the air guide holes so as to be substantially uniform in the left and right directions, and are blown out uniformly in the left and right directions from the air outlet 9b.

Next, a case where the intermediate pipe 90 is attached will be described. When the intermediate duct 90 is attached, the mohair 74 attached to the metal plate member 70 of the pallet lower duct 60 swung by the intermediate duct 90 inserted into the insertion opening 67 is in contact with the pallet mohair 8a attached to the lower surface of the pallet plate 8 of the commodity placement pallet 4 directly above the intermediate duct 90, and the heat insulating material 75 is in contact with the upper limiting piece 65, so that a closed space S is formed between the intermediate duct 90 and the commodity placement pallet 4.

The link mechanism 82, which abuts against the back surface shutter 10 that swings rearward while being pressed by the intermediate duct 90, moves upward, so that the partition opening 14a is closed by the duct shutter 81, and the third right back surface side flow path 34 is partitioned into upper and lower sides by the intermediate duct 90.

In the above state, the left circulation fan 40b, the right circulation fan 30b, and the compressor are driven so that a part of the air sucked through the suction port 9a passes through the introduction flow path 21, reaches the right air flow path 30a, and the remaining part reaches the left air flow path 40a.

In the right air flow path 30a, the air passes upward through the first right back side flow path 31, and then enters the right upper side flow path 32, and is cooled by the evaporator 35. The air cooled by the evaporator 35 reaches the second right back surface side flow path 33 from the right upper side flow path 32, passes through the second right back surface side flow path 33 downward, and reaches the third right back surface side flow path 34. A part of the air passing through the third right rear surface side flow path 34 is blown out from the vent hole 11b of the rear surface baffle 10 toward the storage area 2, and is guided and circulated by the rack lower duct 60 to the vicinity of the lower surface of the commodity shelf 4. The remaining air reaches the duct portion 91 from the rear end opening 91a of the intermediate duct 90, is blown out from the intermediate air outlet 91b, flows toward the air inlet 9a in the storage area 2, and forms an air curtain to cool the internal atmosphere in the area below the intermediate duct 90 in the storage area 2, thereby cooling the commodity placed on the commodity shelf 4 below the intermediate duct 90.

In the left air flow path 40a, the air passes upward through the left rear surface side flow path 41, passes through the left outlet 41b, reaches the outlet flow path 22, is blown out from the air outlet 9b toward the housing area 2, and flows toward the air inlet 9a in the housing area 2, thereby forming an air curtain, and the internal atmosphere in the upper area of the intermediate duct 90 in the housing area 2 can be maintained at a desired temperature. That is, the commodity in the storage area 2 can be kept in two different temperature states.

However, since the flow straightening mechanism 50 is provided in the delivery flow path 22, the air delivered from the left delivery outlet 41a disposed at a position offset to the left is utilized as the left Fang Dao air plate 52b of the second air guide plate 52, and a part thereof passes through the passing holes 54, and a majority thereof flows toward the central region of the first air guide plate 51. Since the air guide holes 53 are formed in the first air guide plate 51 so as to be sparse in the central region and dense in the left and right end portions, the air passing through the central region of the first air guide plate 51 and the air passing through the passing holes 54 pass through the air guide holes 53, pass through the air guide holes so as to be substantially uniform in the left and right directions, and are blown out uniformly in the left and right directions from the air outlet 9b.

As described above, according to the showcase of the embodiment of the present invention, the flow path switching element 80 blows out the air cooled by the evaporator 35 from the vent hole 11b of the back cover 10 below the intermediate duct 90 to the storage area 2 when the intermediate duct 90 is attached, and restricts the air cooled by the evaporator 35 from being blown out from the vent hole 11b and switches the flow path of the air to be blown out from the air outlet 9b when the intermediate duct 90 is not attached, so that not only the commodity in the storage area 2 can be kept in a good temperature state but also in a good temperature state.

According to the showcase, when the intermediate duct 90 is attached, the air cooled by the evaporator 35 is blown out from the intermediate air outlet 91b of the intermediate duct 90 and the vent hole 11b of the back cover 10 below the intermediate duct 90 toward the storage area 2 by the first air circulation element 30 to cool the commodity in the area below the intermediate duct 90, and the air circulated by the second air circulation element 40 is blown out from the air outlet 9b to keep the commodity in the area above the intermediate duct 90 at a predetermined temperature, so that the commodity in the storage area 2 can be kept in a good state at different temperatures.

According to the showcase, when the intermediate duct 90 is attached, the metal plate member 70 attached to the shelf lower duct 60 swung by the intermediate duct 90 forms the sealed space S between the intermediate duct 90 and the commodity shelf 4 directly above it, and therefore, it is possible to prevent a part of the air passing through the third right rear surface side flow path 34 from entering the gap between the intermediate duct 90 and the commodity shelf 4 due to a dimensional error or the like, and it is possible to suppress dew condensation from occurring on the upper surface of the intermediate duct 90.

According to the showcase, the evaporator 35 is provided on the top surface portion 1C, so that the capacity of the storage area 2 can be sufficiently ensured, and the display space for the commodity can be sufficiently ensured.

While the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications are possible.

In the above embodiment, the flow path switching element 80 is constituted by the duct shutter 81 that opens or closes the partition opening 14a and the link mechanism 82 that is rotatably connected to the duct shutter 81 and is provided in the third-party right rear-side flow path 34 so as to be movable up and down, but in the present invention, the configuration elements are not particularly limited as long as the air conditioned by the temperature conditioning element is blown out from the vent hole of the rear shutter located below the intermediate duct to the storage area when the intermediate duct is installed, and the air conditioned by the temperature conditioning element is restricted from being blown out from the vent hole and the air flow path is switched to be blown out from the air outlet when the intermediate duct is not installed.

In the above embodiment, the metal plate member 70 is attached to the under-shelf duct 60, but in the present invention, the metal plate member may be attached to a position other than the under-shelf duct.

Claims

1. A display case, comprising:

a housing area formed in the case main body, the housing area housing the commodity;

an air circulation element having an air flow path provided in the housing main body so as to communicate with the storage area through a suction port and a blowing port, the air circulation element circulating air between the air flow path and the storage area; and

a temperature adjusting element that adjusts air circulated by the air circulating element to a prescribed temperature,

the display case maintains the merchandise at a desired temperature,

the showcase is characterized by comprising:

a plurality of back flaps provided to a back plate configured as the storage area so as to swing back and forth, and configured to open or close a portion of a back opening formed at a position below a predetermined height level of the back plate by swinging;

an intermediate duct that partitions the storage area up and down when the intermediate duct is attached such that an arbitrary back baffle swings backward to penetrate a part of the back opening; and

a flow path switching element that, when the intermediate duct is attached, blows out air conditioned by the temperature adjusting element from a vent hole formed in the back side baffle below the intermediate duct toward the storage area, and when the intermediate duct is not attached, restricts the air conditioned by the temperature adjusting element from being blown out from the vent hole and switches the air flow path to be blown out from the air outlet,

the air flow path includes:

a first back surface flow path that passes air conditioned by the temperature adjusting element downward on a back surface side of the storage area; and

a second back surface flow path that is provided between the back surface plate and the first back surface flow path, is partitioned by a partition plate in a state where a lower end portion and a lower end portion of the first back surface flow path communicate with each other, and passes air flowing through the first back surface flow path upward toward the blowout port,

when the intermediate duct is not installed, the rear opening is closed by each rear baffle, a partition opening formed in the partition plate above the rear opening is opened, air flowing out of the first rear flow path is blown out of the air outlet through the second rear flow path via the partition opening before being blown out to the storage area,

the flow path switching element is provided on the partition plate between the first back surface flow path and the second back surface flow path, and includes: a duct baffle which is a long-strip-shaped member having a longitudinal direction in the left-right direction; and a link mechanism that is an elongated member extending in the up-down direction at a center portion of the second back surface flow path in the left-right direction.

2. The display case of claim 1, wherein,

when the rear baffle is attached so as to swing rearward to penetrate a part of the rear opening, the intermediate duct vertically partitions the second rear flow path.

3. The display case of claim 2, wherein,

when the intermediate duct is attached, the flow path switching element closes a partition opening formed in the partition plate on an upper side than the back surface opening, so that air passing downward through the first back surface flow path passes through the lower end portion and upward through the second back surface flow path, and when the intermediate duct is not attached, the flow path switching element opens the partition opening, so that air passing through the first back surface flow path passes through the partition opening, flows into the second back surface flow path, and passes upward through the second back surface flow path.

4. A display case as in claim 3 wherein,

the duct shutter is provided swingably between a first posture in which the partition opening is opened and a downstream side portion of the partition opening in the first back flow path is closed, and a second posture in which the partition opening is closed and the downstream side portion is opened,

the link mechanism normally maintains the duct shutter in a first posture, and when the intermediate duct is attached, the link mechanism is pressed by the rear shutter that swings rearward to maintain the duct shutter in a second posture.

5. The display case of claim 1, wherein,

the air circulation element includes:

a first air circulation element having a first air flow path that is provided inside the case main body so as to communicate with the storage area through a suction port formed in a front lower portion of the storage area and a blow-out port formed in a front upper portion of the storage area, the first air circulation element circulating air between the first air flow path and the storage area; and

a second air circulation element having a second air flow path that is provided in the housing main body so as to be separated from the first air flow path and that communicates with the storage area through the suction port and the blowing port, the second air circulation element circulating air between the second air flow path and the storage area,

the temperature adjusting element is an element for adjusting the air circulated by the first air circulating element to a prescribed temperature,

the intermediate duct is installed to penetrate the back plate to shut off the first air flow path, and to vertically separate the storage areas to be at different temperatures.