JP6729009B2 - Showcase - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a showcase, and more particularly to a showcase that holds a product to be stored in a desired temperature state.

BACKGROUND ART Conventionally, Patent Document 1 proposes a showcase for holding a product to be stored in a desired temperature state. In the showcase proposed in Patent Document 1, a plurality of product display shelves are provided in a plurality of rows in the up-down direction in a storage chamber of the case body having an opening formed in the front surface. Items are displayed by being placed on.

Further, at a location inside the case main body and outside the storage chamber, an air passage for air in the storage chamber that is sucked in through a suction port provided at a lower front portion of the storage chamber is formed. An evaporator is provided in the air passage.

The air passing through such an air passage is cooled by the evaporator and then blown out from the air outlet provided in the upper front part of the storage chamber. The air blown from the air outlet circulates in the air passage of the air sucked into the air inlet to cool the internal air of the storage room and hold the product displayed on the product display shelf at the desired temperature. To be done.

In such a showcase, since the evaporator is provided on the upper side of the storage chamber, the storage chamber has a sufficient volume as compared with the case where the evaporator is provided on the back side or the lower side of the storage chamber. It can be made large, and a sufficient space for displaying products can be secured.

Japanese Patent No. 3695888

By the way, in the above-mentioned showcase proposed in Patent Document 1, the suction port is provided in the lower front portion of the storage chamber, the outlet is provided in the upper front portion of the storage chamber, and further above the evaporator storage chamber. Since it is provided on the side, the air passage on the back side of the storage chamber allows air to be sucked from the suction port and pass toward the evaporator. That is, only the air before being cooled by the evaporator passes through the air passage on the back side of the storage chamber.

Therefore, even if the storage chamber is divided into upper and lower parts by partition shelves and the air passage on the back side of the storage chamber is also divided vertically by the partition shelves and the like, the air that has passed through the evaporator is introduced into only one side. It was difficult to do so, and as a result, it was difficult to keep the products in the storage chamber in different temperature states.

In view of the above situation, it is an object of the present invention to provide a showcase capable of holding products in storage rooms at different temperature states while sufficiently securing a display space for products.

In order to achieve the above object, a showcase according to the present invention includes a storage chamber that is defined inside a case body and stores a product to be stored therein, and at least a suction chamber inside the case body. An air circulation passage having an air passage provided so as to communicate with each other through a mouth and an outlet, and an air circulation means for circulating the air inside the storage compartment between the air passage and the storage compartment; and the air passage. In the upper air passage of the storage chamber, and a temperature adjusting means for adjusting at least a part of the air circulated by the air circulating means to a predetermined temperature. Is provided on the back side of the storage chamber, and is on the front side of the first back side air passage and the first back side air passage that allows the air sucked through the suction port to pass toward the upper air passage. Between a second rear side air passage which is provided separately from the first rear side air passage and allows the air adjusted by the temperature adjusting means to pass through, and between the storage chamber and the second rear side air passage. A third compartment that is provided and is partitioned from the second rear air passage with their lower ends communicating with each other, and that communicates with the storage chamber through a hole formed in the rear panel of the storage chamber. A partition provided with a back side air passage and penetrating any of the holes in the back panel of the storage chamber to partition the storage chamber and the third back side air passage into upper and lower partitions. It is characterized by having a member.

Further, in the present invention, in the showcase, the upper air passage is divided into a first upper air passage that communicates with the first rear air passage and also communicates with the air outlet, and the first upper air passage. It is characterized in that it is provided with a second upper air passage that is in communication with the first rear air passage and is in communication with the second rear air passage and that is provided with the temperature adjusting means.

The present invention also provides, in the above-mentioned showcase, a blowoff amount which is provided in the first upper air passage and which is driven to adjust the amount of air blown into the storage chamber through the first upper air passage. It is characterized by having an adjusting means.

Further, the present invention is, in the above-mentioned showcase, provided in the first upper air passage such that the first upper air passage can be opened and closed, and when opening, allows air to pass through the first upper air passage, while closing the first upper air passage. Is provided with opening/closing means for restricting passage of air through the first upper air passage.

Further, the present invention is characterized in that, in the above-mentioned showcase, a blowout amount adjusting member is provided in each of the hole portions so as to be openable and closable.

According to the present invention, in the above showcase, the suction port is divided into a first suction port and a second suction port, and the upper air passage includes a first upper air passage that communicates with the air outlet. And a second upper air passage provided with the temperature adjusting means and separated from the upper air passage, the first rear air passage includes the second air passage sucked through the first suction port. The second rear side air passage allows the air that has passed through the second upper side air passage to pass toward the third rear side air passage, and the first rear surface An outer side that is separated from the side air passage, the second rear side air passage, and the third rear side air passage, and that allows the air sucked through the second suction port to pass toward the first upper air passage. It is characterized by having an air passage on the rear side.

The present invention is also directed to the showcase, wherein the suction port has a first suction port and a second suction port, and the upper air passage has a first upper air passage communicating with the air outlet. And a second upper side air passage provided with the temperature adjusting means, wherein the first rear side air passage separates the air sucked through the first suction port from the second upper air passage. A first passage for passing through toward the upper air passage, and an air that is provided in a manner partitioned from the first passage for passage and that is sucked in through the second suction port is the first upper passage. A second passage air passage for passing air toward the third rear surface side air passage, the second rear surface side air passage passing the air passing through the second upper side air passage toward the third rear surface side air passage. It is characterized by

Further, the present invention is characterized in that, in the above-mentioned showcase, a height difference is provided between the first suction port and the second suction port such that one of the first suction port and the second suction port is located above the other.

According to the present invention, in the above-mentioned showcase, the first upper air passage is arranged on both sides of the second upper air passage, and merges with each other on the way to communicate with the air outlet. It is characterized in that it is provided with a rectifying plate which is provided at a confluent portion of the upper air passages and which rectifies the air passing therethrough so as to be uniform left and right.

According to the present invention, the air air passage is provided on the back surface side of the storage chamber, and the first back air passage and the first back air passage that allow the air sucked through the suction port to pass toward the upper air passage. A second rear side air passage, which is provided on the front side of the passage so as to be separated from the first rear side air passage and allows the air adjusted by the temperature adjusting means to pass through; the storage chamber and the second rear side air passage. A third rear-side air passage that is provided between the second rear-side air passage and the second rear-side air passage, the lower-end portions of which are communicated with each other and is communicated with the storage chamber through a hole formed in the rear panel. And a partitioning member that is provided so as to penetrate an arbitrary hole in the rear panel, partitions the storage chamber and the third rear side air passage into upper and lower portions, so that the second rear side air passage is provided. The air passing through, that is, the air adjusted by the temperature adjusting means can be blown out from the hole portion below the partition member. Accordingly, the internal air in the upper region of the partition member and the internal air in the lower region of the partition member in the storage chamber can be adjusted to different temperature zones. That is, the temperature of the internal air in the lower region of the partition member can be made lower than that of the internal air in the upper region of the partition member. Therefore, there is an effect that the products in the storage chamber can be held in different temperature states while sufficiently securing the display space for the products.

Further, according to the present invention, the third rear surface side air passage is provided between the storage chamber and the second rear surface side air passage, and the temperature is provided in the third rear surface side air passage above the partition member. Since the air adjusted by the adjusting means does not pass through, the portion above the partition member in the third rear air passage serves as a buffer area between the upper region of the partition member in the storage chamber and the second rear air passage. In addition, it is possible to prevent the loss due to heat conduction and the condensation on the rear panel.

1 is a sectional side view schematically showing the internal structure of a showcase that is Embodiment 1 of the present invention. FIG. 2 is a cross-sectional side view schematically showing a case where the blowing amount adjusting means in FIG. 1 is driven to be closed. FIG. 3 is a sectional side view schematically showing the internal structure of the showcase that is Embodiment 2 of the present invention. FIG. 4 is a cross-sectional side view schematically showing a case where all the blowing amount adjusting members in FIG. 3 are driven to open. FIG. 5 is a cross-sectional side view schematically showing a case where operation is performed with the partition member removed in FIG. 1. FIG. 6 is a cross-sectional side view schematically showing a case where the showcase, which is the modified example of the first embodiment of the present invention, is operated with the partition member removed. FIG. 7 is a cross-sectional side view schematically showing the internal structure of the showcase that is Embodiment 3 of the present invention. FIG. 8: is a front view which shows typically the showcase which is Embodiment 4 of this invention. 9 is a cross-sectional view taken along the line AA of FIG. FIG. 10 is a sectional view taken along line BB of FIG. FIG. 11 is a perspective view showing the configuration of the first rear air passage.

Preferred embodiments of a showcase according to the present invention will be described in detail below with reference to the accompanying drawings.

<Embodiment 1>
1 is a sectional side view schematically showing the internal structure of a showcase that is Embodiment 1 of the present invention. The showcase illustrated here includes a case body 10.

The case body 10 is a heat-insulating housing having an opening (hereinafter, also referred to as a front opening) 10a formed on the front surface. The case body 10 has a storage chamber 11 defined therein, and is provided with an air circulating unit 20, a blowoff amount adjusting unit 30, a blowoff amount adjusting member 40, and a partition member 50.

The storage chamber 11 is a chamber defined so as to face the front opening 10a, and a plurality of (five in the illustrated example) product display shelves 12 are arranged side by side in the vertical direction. The product display shelves 12 are for mounting and displaying products. A deck pan 13 is arranged at the bottom of the storage chamber 11. The deck pan 13 is for placing and displaying products in the same manner as the product display shelf 12.

A plurality of holes 15 are formed in the rear panel 14 that defines the storage chamber 11. These hole parts 15 are provided at a plurality of height levels, and are long holes whose longitudinal direction is in the left-right direction. More specifically, the hole 15 is formed in the lower portion of each product display shelf 12.

Further, a suction port 16 is formed in the lower front portion of the storage chamber 11, and an air outlet 17 is formed in the upper front portion of the storage chamber 11.

The suction port 16 is an opening for sucking air inside the storage chamber 11, and extends along the left-right direction of the storage chamber 11. The air outlet 17 is an opening for blowing air into the storage chamber 11 and extends in the left-right direction of the storage chamber 11. A rectifying member 17a having a honeycomb structure, for example, is attached to the outlet 17.

The air circulating means 20 is configured to include an air wind passage 20a and a circulation fan 20b. The air air passage 20 a is an air passage extending from the suction port 16 to the air outlet 17 and the holes 15.

Such an air passage 20a includes a lower air passage 21, a first rear air passage 22, an upper air passage 23, a second rear air passage 24, and a third rear air passage 25. Is configured.

The lower air passage 21 is provided outside the storage chamber 11 and below the storage chamber 11 along the front-rear direction. The lower air passage 21 communicates with the suction port 16. The first rear side air passage 22 is provided outside the storage chamber 11 and on the rear side thereof along the vertical direction. The first rear air passage 22 communicates with the lower air passage 21.

The upper air passage 23 is provided outside the storage chamber 11 and above it, and communicates with the first rear air passage 22. The upper air passage 23 is divided into two, and has a first upper air passage 23a on the upper side and a second upper air passage 23b on the lower side. The first upper air passage 23a communicates with the outlet 17.

The second rear air passage 24 extends in the up-down direction on the rear side of the storage chamber 11 and communicates with the second upper air passage 23b. The second backside air passage 24 is extended on the front side of the first backside air passage 22 and is partitioned from the first backside air passage 22.

The third rear side air passage 25 extends along the up-down direction on the rear side of the storage chamber 11. The third rear-side air passage 25 extends between the second rear-side air passage 24 and the storage chamber 11, and is partitioned from the second rear-side air passage 24 such that their lower end portions communicate with each other. The storage chamber 11 is communicated with each other through the holes 15 provided in the rear panel 14. Further, the third rear side air passage 25 communicates with the first upper air passage 23 a through the communication air passage 26.

The circulation fan 20b is driven by a command given from a control means (not shown) to circulate air, and is arranged at a predetermined portion of the lower air passage 21. In the present embodiment, the circulation fan 20b is arranged at a predetermined portion of the lower air passage 21, but in the present invention, the arrangement position of the circulation fan 20b is not particularly limited, and the circulation fan 20b will be described later. The fan 20b may be disposed anywhere as long as the function of the fan 20b can be exhibited.

In such an air circulation means 20, the circulation fan 20b is driven to suck the air (internal air) inside the storage chamber 11 through the suction port 16, and the sucked air passes through the air air passage 20a. The air is circulated between the inside and the outside of the storage chamber 11 by sending the air to the outlet 17 and the holes 15 and blowing out the air sent through the outlet 17 and the holes 15 into the storage chamber 11. It is a thing.

An evaporator (temperature adjusting means) 60 is provided in the second upper air passage 23b of the air air passage 20a. That is, the evaporator 60 is arranged in the case body 10 in a region above the storage chamber 11. The evaporator 60 constitutes a refrigerant circulation means for circulating a refrigerant together with the compressor 61, the condenser 62 and the expansion mechanism 63. Here, the compressor 61 is driven by a command given from the control means and compresses the refrigerant. The condenser 62 condenses the refrigerant compressed by the compressor 61. The expansion mechanism 63 adiabatically expands the refrigerant condensed in the condenser 62 to bring it into a low temperature and low pressure state.

The evaporator 60 exchanges heat between the air passing through the second upper air passage 23b from the rear to the front by driving the circulation fan 20b and the refrigerant adiabatically expanded by the expansion mechanism 63, more specifically. Is to cool the air passing through the second upper air passage 23b by evaporating the refrigerant. The refrigerant evaporated in the evaporator 60 returns to the compressor 61 and is compressed.

The blowoff amount adjusting means 30 is provided on the upstream side of the confluence of the first upper air passage 23a and the communication air passage 26 in the first upper air passage 23a. The blowoff amount adjusting means 30 is like a valve element which is opened and closed by a command given from the control means, and when it is closed, by closing a part of the first upper air passage 23a, The air is restricted from passing through the first upper air passage 23a. In this way, the blowoff amount adjusting means 30 adjusts the amount of air blown out from the blowout port 17 by controlling the amount of air passing through the first upper air passage 23a.

In the present embodiment, the valve body that is opened and closed according to the command given from the control means is illustrated as the blowout amount adjusting means 30, but in the present invention, a damper may be applied as the blowout amount adjusting means 30. .. That is, the blowoff amount adjusting means 30 may adjust the opening rate of its own passage opening according to a command given from the control means. This also makes it possible to control the amount of air that passes through the first upper air passage 23a and flows toward the air outlet 17, and consequently adjust the amount of air that is blown out from the air outlet 17.

A plurality of blowoff amount adjusting members 40 are provided, and each is provided for each height level of the hole 15. The blowoff amount adjusting member 40 is opened/closed by a command given from the control means, and closes the corresponding hole 15 when it is closed. The blowout amount adjusting member 40 as described above adjusts the amount of air blown out from the hole 15 provided in the rear panel 14.

In the present embodiment, the valve body that opens and closes according to the command given from the control means is illustrated as the blowout amount adjusting member 40, but in the present invention, a damper may be applied as the blowout amount adjusting member 40. .. That is, the blowoff amount adjusting member 40 may adjust the opening rate of its own passage opening according to a command given from the control means. This also allows the amount of air blown from the hole 15 to be adjusted.

The partition member 50 is an elongate shelf member having a heat insulating property in which the left-right direction is the longitudinal direction. The partition member 50 is provided so as to penetrate an arbitrary hole 15 in the rear panel 14 of the storage chamber 11. More specifically, the partition member 50 penetrates through the hole 15 provided between the third-highest commodity display shelf 12 and the fourth-highest commodity display shelf 12 to form a base end. The portion 51 is in contact with the wall 27 that divides the third rear surface side air passage 25 and the second rear surface side air passage 24. In the hole 15 to which the partition member 50 is attached, the blowoff amount adjusting member 40 is driven to open and is opened. Such a partition member 50 is partitioned vertically by partitioning the storage chamber 11 and the third rear side air passage 25.

In the showcase configured as described above, the blowoff amount adjusting means 30 is opened and the blowoff amount adjusting member 40 below the hole portion 15 through which the partition member 50 is opened is driven by a command given from the control means. Then, when the blow-off amount adjusting member 40 above the hole 15 through which the partition member 50 penetrates is driven to be closed and the hole 15 corresponding to these is closed, the circulation fan 20b and the compressor 61 are driven. The products placed on the product display shelf 12 are cooled as follows.

The air inside the storage chamber 11 is sucked in through the suction port 16, passes through the lower air passage 21 and the first rear air passage 22, and in the upper air passage 23, the first upper air passage 23 a and the second upper air passage 23 a. Enter 23b.

The air that has entered the first upper air passage 23 a reaches the air outlet 17 and is blown out from the air outlet 17. On the other hand, the air that has entered the second upper air passage 23b passes through the evaporator 60 and is cooled. The air cooled by the evaporator 60 reaches the second rear surface side air passage 24, passes through the second rear surface side air passage 24, and then reaches the third rear surface side air passage 25, which is below the partition member 50. Is blown out from the hole portion 15 which is opened.

Most of the air blown from the air outlet 17 flows toward the suction port 16 to form an air curtain. By forming the air curtain in this way, invasion of heat from the outside is suppressed. Further, the air blown out from the hole 15 flows from the rear to the front in the upper region of the commodity display rack 12 and the deck pan 13, and then merges with the air curtain.

By circulating the internal air in the storage chamber 11 in this manner, the internal air in the upper region of the partition member 50 and the internal air in the lower region of the partition member 50 in the storage chamber 11 can be adjusted to different temperature zones. .. That is, the temperature of the internal air in the lower region of the partition member 50 can be made lower than that of the internal air in the upper region of the partition member 50.

As a result, in the storage chamber 11, the product in the upper region of the partition member 50 and the product in the lower region of the partition member 50 can be held in different temperature zones.

Further, in the showcase, the products placed on the product display shelf 12 can be held in different temperature zones as follows.

When the blowout amount adjusting means 30 is driven to be closed from the state shown in FIG. 1 by the command given from the control means to close a part of the first upper air passage 23a, as shown in FIG. The air is sucked in through the suction port 16, passes through the lower air passage 21 and the first rear air passage 22, and enters the second upper air passage 23b in the upper air passage 23.

The air that has entered the second upper air passage 23b passes through the evaporator 60 and is cooled. The air cooled by the evaporator 60 reaches the second rear surface side air passage 24, passes through the second rear surface side air passage 24, and then reaches the third rear surface side air passage 25, which is below the partition member 50. Is blown out from the hole portion 15 which is opened.

The air blown out from the hole 15 flows from the rear to the front in the upper region of the commodity display shelf 12 and the deck pan 13, and then is sucked into the suction port 16 and circulates.

By circulating the internal air in the storage chamber 11 in this manner, the internal air in the upper region of the partition member 50 and the internal air in the lower region of the partition member 50 in the storage chamber 11 can be adjusted to different temperature zones. .. That is, the temperature of the internal air in the lower region of the partition member 50 can be made lower than that of the internal air in the upper region of the partition member 50. Since the air curtain and the like are not formed in the upper region of the partition member 50, it is possible to easily heat the products in the upper region of the partition member 50 by driving the heater or the like built in the product display shelf 12.

As a result, in the storage chamber 11, the product in the upper region of the partition member 50 and the product in the lower region of the partition member 50 can be held in different temperature zones.

As described above, according to the showcase that is the first embodiment of the present invention, since the evaporator 60 is provided on the upper side of the storage chamber 11, the evaporator 60 is located on the back side or the lower side of the storage chamber 11. It is possible to sufficiently increase the volume of the storage chamber 11 as compared with the case where the storage chamber 11 is provided on the side, and it is possible to secure a sufficient display space for the product. Moreover, since the products in the upper region of the partition member 50 and the products in the lower region of the partition member 50 can be held in different temperature zones, the products in the storage chamber 11 can be held in different temperature states. That is, according to the above-mentioned showcase, it is possible to hold the products in the storage chamber 11 in different temperature states while sufficiently securing the display space for the products.

In particular, a third rear surface side air passage 25 is provided between the storage chamber 11 and the second rear surface side air passage 24, and the third rear surface side air passage 25 above the partition member 50 evaporates. Since the air cooled in the container 60 does not pass through, the upper portion of the third rear side air passage 25 above the partition member 50 is formed between the upper region of the partition member 50 in the storage chamber 11 and the second rear side air passage 24. It acts as a buffer region and can prevent loss due to heat conduction and dew condensation on the rear panel 14.

<Second Embodiment>
FIG. 3 is a cross-sectional side view schematically showing the internal structure of the showcase that is Embodiment 2 of the present invention. The same components as those in the above-described first embodiment will be described with the same reference numerals. The showcase illustrated here includes a case body 10'.

The case body 10' is a heat insulating housing having an opening (hereinafter, also referred to as a front opening) 10a formed in the front surface. The case body 10' has a storage chamber 11 defined therein, and an air circulation means 20, an assist fan 31, a blowoff amount adjusting member 40, and a partition member 50.

The storage chamber 11 is a chamber defined so as to face the front opening 10a, and a plurality of (five in the illustrated example) product display shelves 12 are arranged side by side in the vertical direction. The product display shelves 12 are for mounting and displaying products. A deck pan 13 is arranged at the bottom of the storage chamber 11. The deck pan 13 is for placing and displaying products in the same manner as the product display shelf 12.

A plurality of holes 15 are formed in the rear panel 14 that defines the storage chamber 11. These holes 15 are long holes in which the left-right direction is the longitudinal direction at a plurality of height levels. More specifically, the hole 15 is formed in the lower portion of each product display shelf 12.

Further, a suction port 16 is formed in the lower front portion of the storage chamber 11, and an air outlet 17 is formed in the upper front portion of the storage chamber 11.

The suction port 16 is an opening for sucking air inside the storage chamber 11, and extends along the left-right direction of the storage chamber 11. The air outlet 17 is an opening for blowing air into the storage chamber 11 and extends in the left-right direction of the storage chamber 11. A rectifying member 17a having a honeycomb structure, for example, is attached to the outlet 17.

The air circulating means 20 is configured to include an air wind passage 20a and a circulation fan 20b. The air air passage 20 a is an air passage extending from the suction port 16 to the air outlet 17 and the holes 15.

Such an air passage 20a includes a lower air passage 21, a first rear air passage 22, an upper air passage 23, a second rear air passage 24, and a third rear air passage 25. Is configured.

The lower air passage 21 is provided outside the storage chamber 11 and below the storage chamber 11 along the front-rear direction. The lower air passage 21 communicates with the suction port 16. The first rear side air passage 22 is provided outside the storage chamber 11 and on the rear side thereof along the vertical direction. The first rear air passage 22 communicates with the lower air passage 21.

The upper air passage 23 is provided outside the storage chamber 11 and above it, and communicates with the first rear air passage 22. The upper air passage 23 is divided into two, and has a first upper air passage 23a on the upper side and a second upper air passage 23b on the lower side. The first upper air passage 23a communicates with the outlet 17.

The second rear air passage 24 extends in the up-down direction on the rear side of the storage chamber 11 and communicates with the second upper air passage 23b. The second backside air passage 24 is extended on the front side of the first backside air passage 22 and is partitioned from the first backside air passage 22.

The third rear side air passage 25 extends along the up-down direction on the rear side of the storage chamber 11. The third rear-side air passage 25 extends between the second rear-side air passage 24 and the storage chamber 11, and is partitioned from the second rear-side air passage 24 such that their lower end portions communicate with each other. The storage chamber 11 is communicated with each other through the holes 15 provided in the rear panel 14. Further, the third rear side air passage 25 communicates with the first upper air passage 23 a through the communication air passage 26.

The circulation fan 20b is driven by a command given from a control means (not shown) to circulate air, and is arranged at a predetermined portion of the lower air passage 21. In the present embodiment, the circulation fan 20b is arranged at a predetermined portion of the lower air passage 21, but in the present invention, the arrangement position of the circulation fan 20b is not particularly limited, and the circulation fan 20b will be described later. The fan 20b may be disposed anywhere as long as the function of the fan 20b can be exhibited.

In such an air circulation means 20, the circulation fan 20b is driven to suck the air (internal air) inside the storage chamber 11 through the suction port 16, and the sucked air passes through the air air passage 20a. The air is circulated between the inside and the outside of the storage chamber 11 by sending the air to the outlet 17 and the holes 15 and blowing out the air sent through the outlet 17 and the holes 15 into the storage chamber 11. It is a thing.

An evaporator (temperature adjusting means) 60 is provided in the second upper air passage 23b of the air air passage 20a. That is, the evaporator 60 is disposed above the storage chamber 11 in the case body 10'. The evaporator 60 constitutes a refrigerant circulation means for circulating a refrigerant together with the compressor 61, the condenser 62 and the expansion mechanism 63. Here, the compressor 61 is driven by a command given from the control means and compresses the refrigerant. The condenser 62 condenses the refrigerant compressed by the compressor 61. The expansion mechanism 63 adiabatically expands the refrigerant condensed in the condenser 62 to bring it into a low temperature and low pressure state.

The evaporator 60 exchanges heat between the air passing through the second upper air passage 23b from the rear to the front by driving the circulation fan 20b and the refrigerant adiabatically expanded by the expansion mechanism 63, more specifically. Is to cool the air passing through the second upper air passage 23b by evaporating the refrigerant. The refrigerant evaporated in the evaporator 60 returns to the compressor 61 and is compressed.

The assist fan 31 is provided on the upstream side of the confluence of the first upper air passage 23a and the communication air passage 26 in the first upper air passage 23a. The assist fan 31 is rotationally driven by a command given by the control means. Although the assist fan 31 is used in the second embodiment, an airflow resistance member such as a shielding plate may be used instead of the assist fan 31 in the present invention.

A plurality of blowoff amount adjusting members 40 are provided, and each is provided for each height level of the hole 15. The blowoff amount adjusting member 40 is opened/closed by a command given from the control means, and closes the corresponding hole 15 when it is closed. The blowout amount adjusting member 40 as described above adjusts the amount of air blown out from the hole 15 provided in the rear panel 14.

In the present embodiment, the valve body that opens and closes according to the command given from the control means is illustrated as the blowout amount adjusting member 40, but in the present invention, a damper may be applied as the blowout amount adjusting member 40. .. That is, the blowoff amount adjusting member 40 may adjust the opening rate of its own passage opening according to a command given from the control means. This also allows the amount of air blown from the hole 15 to be adjusted.

The partition member 50 is an elongate shelf member having a heat insulating property in which the left-right direction is the longitudinal direction. The partition member 50 is provided so as to penetrate an arbitrary hole 15 in the rear panel 14 of the storage chamber 11. More specifically, the partition member 50 penetrates through the hole 15 provided between the third-highest commodity display shelf 12 and the fourth-highest commodity display shelf 12 to form a base end. The portion 51 is in contact with the wall 27 that divides the third rear surface side air passage 25 and the second rear surface side air passage 24. The blowout amount adjusting member 40 that opens and closes the hole 15 is driven to open to open the hole 15. Such a partition member 50 is partitioned vertically by partitioning the storage chamber 11 and the third rear side air passage 25.

In the showcase having the above-described configuration, the assist fan 31 is rotationally driven and the blowout amount adjusting member 40 below the hole 15 through which the partition member 50 is opened is driven by a command given from the control means. When the circulation fan 20b and the compressor 61 are driven in a state where the blowout amount adjusting member 40 above the hole 15 through which the partition member 50 penetrates is closed and the hole 15 corresponding thereto is closed, The products placed on the display rack 12 are cooled as follows.

The air inside the storage chamber 11 is sucked in through the suction port 16, passes through the lower air passage 21 and the first rear air passage 22, and in the upper air passage 23, the first upper air passage 23 a and the second upper air passage 23 a. Enter 23b.

The air that has entered the first upper air passage 23 a reaches the air outlet 17 and is blown out from the air outlet 17. On the other hand, the air that has entered the second upper air passage 23b passes through the evaporator 60 and is cooled. The air cooled by the evaporator 60 reaches the second rear surface side air passage 24, passes through the second rear surface side air passage 24, and then reaches the third rear surface side air passage 25, which is below the partition member 50. Is blown out from the hole portion 15 which is opened.

Most of the air blown from the air outlet 17 flows toward the suction port 16 to form an air curtain. By forming the air curtain in this way, invasion of heat from the outside is suppressed. Further, the air blown out from the hole 15 flows from the rear to the front in the upper region of the commodity display rack 12 and the deck pan 13, and then merges with the air curtain.

By circulating the internal air in the storage chamber 11 in this manner, the internal air in the upper region of the partition member 50 and the internal air in the lower region of the partition member 50 in the storage chamber 11 can be adjusted to different temperature zones. .. That is, the temperature of the internal air in the lower region of the partition member 50 can be made lower than that of the internal air in the upper region of the partition member 50.

As a result, in the storage chamber 11, the product in the upper region of the partition member 50 and the product in the lower region of the partition member 50 can be held in different temperature zones.

Further, in the showcase, the products placed on the product display shelf 12 can be held in different temperature zones as follows.

When the blowout amount adjusting member 40 above the hole portion 15 through which the partition member 50 penetrates is driven to open from the state shown in FIG. 3 by the command given from the control means to open all the hole portions 15, it is shown in FIG. As described above, the air inside the storage chamber 11 is sucked through the suction port 16, passes through the lower air passage 21 and the first rear air passage 22, and in the upper air passage 23, the first upper air passage 23 a and the second air passage 23 a. Enter the upper air passage 23b.

The air that has entered the first upper air passage 23 a branches into two on the way, and one of the air reaches the air outlet 17 and is blown out from the air outlet 17. Further, the other air reaches the third rear side air passage 25 via the communication air passage 26 and is blown out from the open hole portion 15 above the partition member 50.

On the other hand, the air that has entered the second upper air passage 23b passes through the evaporator 60 and is cooled. The air cooled by the evaporator 60 reaches the second rear surface side air passage 24, passes through the second rear surface side air passage 24, and then reaches the third rear surface side air passage 25, which is below the partition member 50. Is blown out from the hole portion 15 which is opened.

Most of the air blown from the air outlet 17 flows toward the suction port 16 to form an air curtain. By forming the air curtain in this way, invasion of heat from the outside is suppressed. Further, the air blown from the hole 15 above the partition member 50 flows from the rear to the front in the upper region of the product display shelf 12, and then joins the air curtain. Further, the air blown from the hole 15 below the partition member 50 flows from the rear to the front in the upper region of the commodity display shelf 12 and the deck pan 13, and then merges with the air curtain.

By circulating the internal air in the storage chamber 11 in this manner, the internal air in the upper region of the partition member 50 and the internal air in the lower region of the partition member 50 in the storage chamber 11 can be adjusted to different temperature zones. .. That is, the temperature of the internal air in the lower region of the partition member 50 can be made lower than that of the internal air in the upper region of the partition member 50.

As a result, in the storage chamber 11, the product in the upper region of the partition member 50 and the product in the lower region of the partition member 50 can be held in different temperature zones.

As described above, according to the showcase that is the second embodiment of the present invention, since the evaporator 60 is provided on the upper side of the storage chamber 11, the evaporator 60 is provided on the back side or the lower side of the storage chamber 11. It is possible to sufficiently increase the volume of the storage chamber 11 as compared with the case where the storage chamber 11 is provided on the side, and it is possible to secure a sufficient display space for the product. Moreover, since the products in the upper region of the partition member 50 and the products in the lower region of the partition member 50 can be held in different temperature zones, the products in the storage chamber 11 can be held in different temperature states. That is, according to the above-mentioned showcase, it is possible to hold the products in the storage chamber 11 in different temperature states while sufficiently securing the display space for the products.

In particular, a third rear surface side air passage 25 is provided between the storage chamber 11 and the second rear surface side air passage 24, and the third rear surface side air passage 25 above the partition member 50 evaporates. Since the air cooled in the container 60 does not pass through, the upper portion of the third rear side air passage 25 above the partition member 50 is formed between the upper region of the partition member 50 in the storage chamber 11 and the second rear side air passage 24. It acts as a buffer region and can prevent loss due to heat conduction and dew condensation on the rear panel 14.

Furthermore, since the amount of air blown out from the outlet 17 can be increased or decreased by increasing or decreasing the rotational drive amount of the assist fan 31 provided in the first upper air passage 23a, the installation height level of the partition member 50 can be increased or decreased. By adjusting the rotational driving amount of the assist fan 31 in accordance with the above, it is possible to secure an appropriate blowing amount according to the volume of the upper region of the partition member 50 in the storage chamber 11.

The preferred embodiments 1 and 2 of the present invention have been described above, but in the present invention, the products stored in the storage chamber 11 can be maintained at a desired temperature state as follows.

In the showcase according to the first embodiment, when the partition member 50 is removed from the state shown in FIG. 2, as shown in FIG. 5, the air passing through the third rear side air passage 25, that is, the evaporator 60. Part of the air cooled in (1) reaches the first upper air passage 23 a via the communication air passage 26 and is blown out from the air outlet 17. According to this, the internal temperature of the storage chamber 11 can be made uniform, and thus the products stored in the storage chamber 11 can be held in substantially the same temperature range.

Further, in the present invention, as shown in FIG. 6, in the case body 10″, the communication port 70 that communicates the first upper air passage 23a and the second upper air passage 23b is formed, and the communication port 70 is formed. There may be provided an opening/closing body 71 for opening/closing the communication port 70. The communication port 70 is located downstream of the site of the first upper air passage 23a closed by the blowoff amount adjusting means 30 and in the second upper air passage 23b. It is an opening that communicates with the downstream side portion of the evaporator 60. The opening/closing body 71 is provided so as to be openable/closable, and is opened/closed in response to a command given from the control means. When an opening command is given from the control means, the communication port 70 is opened to open the communication port 70, and when a closing command is given, the communication device is closed to close the communication port 70.

Then, with the partition member 50 removed, the opening/closing body 71 is moved open to open the communication port 70 with the blowoff amount adjusting means 30 blocking a part of the first upper air passage 23a. become. That is, the air cooled by the evaporator 60 is branched into two in the middle, and one of the air passes through the communication port 70 to reach the air outlet 17 and is blown out from the air outlet 17. Further, the other air reaches the second rear surface side air passage 24, passes through the second rear surface side air passage 24, and then reaches the third rear surface side air passage 25. The air passing through the third rear side air passage 25 is blown out from the opening 15 and reaches the first upper air passage 23 a via the communication air passage 26 and is blown out from the air outlet 17. According to this, the internal temperature of the storage chamber 11 can be made uniform, and thus the products stored in the storage chamber 11 can be held in substantially the same temperature range.

<Third Embodiment>
FIG. 7 is a cross-sectional side view schematically showing the internal structure of the showcase that is Embodiment 3 of the present invention. The same components as those of the showcase according to the first embodiment described above are designated by the same reference numerals and will be described. The showcase illustrated here includes a case body 100.

The case body 100 is a heat-insulating housing having an opening (hereinafter, also referred to as a front opening) 10a formed on the front surface. The case main body 100 has a storage chamber 11 defined therein, and an air circulating unit 80, a blowoff amount adjusting unit 30, a blowoff amount adjusting member 40, and a partition member 50.

The storage chamber 11 is a chamber defined so as to face the front opening 10a, and a plurality of (five in the illustrated example) product display shelves 12 are arranged side by side in the vertical direction. The product display shelves 12 are for mounting and displaying products. A deck pan 13 is arranged at the bottom of the storage chamber 11. The deck pan 13 is for placing and displaying products in the same manner as the product display shelf 12.

A plurality of holes 15 are formed in the rear panel 14 that defines the storage chamber 11. These hole parts 15 are provided at a plurality of height levels, and are long holes whose longitudinal direction is in the left-right direction. More specifically, the hole 15 is formed in the lower portion of each product display shelf 12.

Further, suction ports 16a and 16b are formed in the lower front portion of the storage chamber 11, and an outlet 17 is formed in the upper front portion of the storage chamber 11.

The suction ports 16a and 16b are openings for sucking air inside the storage chamber 11, and are arranged side by side in the front-rear direction so as to extend along the left-right direction of the storage chamber 11. The air outlet 17 is an opening for blowing air into the storage chamber 11 and extends in the left-right direction of the storage chamber 11. A rectifying member 17a having a honeycomb structure, for example, is attached to the outlet 17.

The air circulation unit 80 is configured to include an inner air air passage 80a, an outer air air passage 80b, an inner air circulation fan 80a1, and an outer air circulation fan 80b1.

The inner air air passage 80a includes an inner lower air passage 81a, a first inner rear air passage (first rear air passage) 82a, an inner upper air passage (second upper air passage) 83a. The second inner rear surface side air passage (second rear surface side air passage) 84 and the third inner rear surface side air passage (third rear surface side air passage) 85 are configured.

The inner lower air passage 81a is provided outside the storage chamber 11 and below the storage chamber 11 along the front-rear direction. The inner lower air passage 81a communicates with the rear suction port (first suction port) 16a. The first inner rear side air passage 82a is provided outside the storage chamber 11 and on the rear side thereof along the vertical direction. The first inner rear air passage 82a communicates with the inner lower air passage 81a.

The inner upper air passage 83a is provided outside and above the storage chamber 11, and communicates with the first inner rear air passage 82a. The second inner rear air passage 84 extends in the up-down direction on the rear surface side of the storage chamber 11 and communicates with the inner upper air passage 83a. The second inner rear surface side air passage 84 extends on the front side of the first inner rear surface side air passage 82a and is partitioned from the first inner rear surface side air passage 82a.

The third inner rear side air passage 85 extends in the up-down direction on the rear side of the storage chamber 11. The third inner rear surface side air passage 85 is extended between the second inner rear surface side air passage 84 and the storage chamber 11, and the lower ends of the second inner rear surface side air passage 84 and the second inner rear surface side air passage 84 are mutually different. They are partitioned in a state of being communicated with each other, and are communicated with the storage chamber 11 through the holes 15 provided in the rear panel 14.

The inner circulation fan 80a1 is driven by a command given from a control unit (not shown) to circulate air, and is arranged at a predetermined portion of the inner lower air passage 81a. In the present embodiment, the inner circulation fan 80a1 is arranged at a predetermined portion of the inner lower air passage 81a, but the arrangement position of the inner circulation fan 80a1 is particularly limited in the present invention. Instead, it may be arranged at any location as long as it can exhibit the function of the inner circulation fan 80a1 described later.

The outer air wind passage 80b includes an outer lower air passage 81b, an outer rear air passage 82b, and an outer upper air passage (first upper air passage) 83b.

The outer lower air passage 81b is provided outside the storage chamber 11 and below the storage chamber 11 along the front-rear direction. The outer lower air passage 81b communicates with the front suction port (second suction port) 16b and is provided below the inner lower air passage 81a. The outer rear side air passage 82b is provided outside the storage chamber 11 and on the rear side along the vertical direction. The outer rear air passage 82b communicates with the outer lower air passage 81b, and is partitioned and provided on the rear side of the first inner rear air passage 82a.

The outer upper air passage 83b is provided outside the storage chamber 11 and above it. The outer upper air passage 83b communicates with the outer rear air passage 82b and is provided separately from the inner upper air passage 83a. The outer upper air passage 83b communicates with the outlet 17 and also communicates with the third inner rear air passage 85 through the communication air passage 86.

The outer circulation fan 80b1 is driven by a command given from a control unit (not shown) to circulate air, and is arranged at a predetermined portion of the outer lower air passage 81b. In the present embodiment, the outer circulation fan 80b1 is arranged at a predetermined portion of the outer lower air passage 81b, but the arrangement position of the outer circulation fan 80b1 is particularly limited in the present invention. Instead, the external circulation fan 80b1 described later may be arranged at any location as long as the function can be exerted.

Such an air circulation unit 80 sucks the air (internal air) inside the storage chamber 11 through the rear suction port 16a by driving the inner circulation fan 80a1, and the sucked air sucks the inner air duct 80a. Is sent to each outlet 17 or each hole 15 in a mode of passing through, and the air sent out through the outlet 17 or each hole 15 is blown into the inside of the storage chamber 11 so that the inside and the outside of the storage chamber 11 are It circulates air between them.

Further, the air circulation unit 80 sucks the air (internal air) inside the storage chamber 11 through the front suction port 16b by driving the outer circulation fan 80b1, and the sucked air passes through the outer air wind passage 80b. In this manner, the air is sent to the air outlet 17 or each hole 15 in this manner, and the air sent out through the air outlet 17 or each hole 15 is blown out to the inside of the storage chamber 11. To circulate.

An evaporator (temperature adjusting means) 60 is provided in the inner upper air passage 83a of the inner air air passage 80a. That is, the evaporator 60 is disposed in the case main body 100 in a region above the storage chamber 11. The evaporator 60 constitutes a refrigerant circulation means for circulating a refrigerant together with the compressor 61, the condenser 62 and the expansion mechanism 63. Here, the compressor 61 is driven by a command given from the control means and compresses the refrigerant. The condenser 62 condenses the refrigerant compressed by the compressor 61. The expansion mechanism 63 adiabatically expands the refrigerant condensed in the condenser 62 to bring it into a low temperature and low pressure state.

The evaporator 60 exchanges heat between the air passing through the inner upper air passage 83a from the rear to the front by driving the inner circulation fan 80a1 and the refrigerant adiabatically expanded by the expansion mechanism 63. More specifically, the air passing through the inner upper air passage 83a is cooled by evaporating the refrigerant. The refrigerant evaporated in the evaporator 60 returns to the compressor 61 and is compressed.

The blowout amount adjusting means 30 is provided on the upstream side of the confluence of the outer upper air passage 83b and the communication air passage 86 in the outer upper air passage 83b. The blowoff amount adjusting means 30 is like a valve element which is opened and closed by a command given from the control means, and when it is closed, by closing a part of the outer upper air passage 83b, The air is restricted from passing through the outer upper air passage 83b. In this way, the blowout amount adjusting means 30 adjusts the amount of air blown out from the blowout port 17 by controlling the amount of air passing through the outer upper air passage 83b.

In the present embodiment, the valve body that is opened and closed according to the command given from the control means is illustrated as the blowout amount adjusting means 30, but in the present invention, a damper may be applied as the blowout amount adjusting means 30. .. That is, the blowoff amount adjusting means 30 may adjust the opening rate of its own passage opening according to a command given from the control means. This also makes it possible to control the amount of air that passes through the outer upper air passage 83b toward the outlet 17 and consequently adjusts the amount of air blown from the outlet 17.

A plurality of blowoff amount adjusting members 40 are provided, and each is provided for each height level of the hole 15. The blowoff amount adjusting member 40 is opened/closed by a command given from the control means, and closes the corresponding hole 15 when it is closed. The blowout amount adjusting member 40 as described above adjusts the amount of air blown out from the hole 15 provided in the rear panel 14.

In the present embodiment, the valve body that opens and closes according to the command given from the control means is illustrated as the blowout amount adjusting member 40, but in the present invention, a damper may be applied as the blowout amount adjusting member 40. .. That is, the blowoff amount adjusting member 40 may adjust the opening rate of its own passage opening according to a command given from the control means. This also allows the amount of air blown from the hole 15 to be adjusted.

The partition member 50 is an elongate shelf member having a heat insulating property in which the left-right direction is the longitudinal direction. The partition member 50 is provided so as to penetrate an arbitrary hole 15 in the rear panel 14 of the storage chamber 11. More specifically, the partition member 50 penetrates through the hole 15 provided between the third-highest commodity display shelf 12 and the fourth-highest commodity display shelf 12 to form a base end. The portion 51 is in contact with the wall 87 that divides the third inner rear surface side air passage 85 and the second inner rear surface side air passage 84. In the hole 15 to which the partition member 50 is attached, the blowoff amount adjusting member 40 is driven to open and is opened. Such a partition member 50 is partitioned into upper and lower parts by partitioning the storage chamber 11 and the third inner rear surface side air passage 85.

In the showcase configured as described above, the blowoff amount adjusting means 30 is opened and the blowoff amount adjusting member 40 below the hole portion 15 through which the partition member 50 is opened is driven by a command given from the control means. In addition, the inner circulation fan 80a1 and the outer circulation fan 80b1 are closed in a state in which the blowout amount adjusting member 40 above the hole portion 15 through which the partition member 50 penetrates is closed and the hole portion 15 corresponding to these is closed. When the compressor 61 is driven, the product placed on the product display shelf 12 is cooled as follows.

The air inside the storage chamber 11 is sucked through the suction ports 16a and 16b. The air sucked through the front suction port 16b passes through the outer lower air passage 81b and the outer rear air passage 82b and enters the outer upper air passage 83b. The air that has entered the outer upper air passage 83b reaches the air outlet 17 and is blown out from the air outlet 17.

The air sucked through the rear suction port 16a passes through the inner lower air passage 81a and the first inner rear air passage 82a and enters the inner upper air passage 83a.

The air that has entered the inner upper air passage 83a passes through the evaporator 60 and is cooled. The air cooled by the evaporator 60 reaches the second inner rear surface side air passage 84, passes through the second inner rear surface side air passage 84, and then reaches the third inner rear surface side air passage 85. It is blown out from the opening 15 below the partition member 50.

Most of the air blown out from the air outlet 17 flows toward the suction ports 16a and 16b to form an air curtain. By forming the air curtain in this way, invasion of heat from the outside is suppressed. Further, the air blown out from the hole 15 flows from the rear to the front in the upper region of the commodity display rack 12 and the deck pan 13, and then merges with the air curtain.

By circulating the internal air in the storage chamber 11 in this manner, the internal air in the upper region of the partition member 50 and the internal air in the lower region of the partition member 50 in the storage chamber 11 can be adjusted to different temperature zones. .. That is, the temperature of the internal air in the lower region of the partition member 50 can be made lower than that of the internal air in the upper region of the partition member 50.

As a result, in the storage chamber 11, the product in the upper region of the partition member 50 and the product in the lower region of the partition member 50 can be held in different temperature zones.

As described above, according to the showcase that is the third embodiment of the present invention, since the evaporator 60 is provided on the upper side of the storage chamber 11, the evaporator 60 is provided on the back side or the lower side of the storage chamber 11. It is possible to sufficiently increase the volume of the storage chamber 11 as compared with the case where the storage chamber 11 is provided on the side, and it is possible to secure a sufficient display space for the product. Moreover, since the products in the upper region of the partition member 50 and the products in the lower region of the partition member 50 can be held in different temperature zones, the products in the storage chamber 11 can be held in different temperature states. That is, according to the above-mentioned showcase, it is possible to hold the products in the storage chamber 11 in different temperature states while sufficiently securing the display space for the products.

In particular, a third inner rear surface side air passage 85 is provided between the storage chamber 11 and the second inner rear surface side air passage 84, and the third inner rear surface side above the partition member 50. Since the air cooled by the evaporator 60 does not pass through the air passage 85, the upper portion of the third inner rear air passage 85 above the partition member 50 is located above the partition member 50 in the storage chamber 11, (2) It acts as a buffer region with the inner rear surface side air passage 84 and can prevent loss due to heat conduction, dew condensation on the rear panel 14, and the like.

Furthermore, since the air passing through the inner air air passage 80a and the air passing through the outer air air passage 80b do not mix in the middle of the air passage, it is possible to reduce the cooling load and save energy. Can be planned.

<Embodiment 4>
8: is a front view which shows typically the showcase which is Embodiment 4 of this invention, FIG. 9 is the sectional view on the AA line of FIG. 8, FIG. 10 is the BB line of FIG. FIG. The showcase illustrated here includes a case body 110.

The case body 110 is a heat-insulating housing having an opening (hereinafter, also referred to as a front opening) 110a formed on the front surface. A storage chamber 111 is defined inside the case body 110, and an air circulation means 120, a blowoff amount adjusting member 140, and a partition member 150 are provided.

The storage chamber 111 is a chamber defined so as to face the front opening 110a, and a plurality of (five in the illustrated example) product display shelves 112 are arranged side by side in the vertical direction. The product display shelves 112 are for mounting and displaying products, respectively. A deck pan 113 is arranged at the bottom of the storage chamber 111. The deck pan 113 is for placing and displaying products in the same manner as the product display shelf 112.

A plurality of holes 115 are formed in the rear panel 114 that defines the storage chamber 111. These hole portions 115 are provided at a plurality of height levels, and are long holes whose longitudinal direction is in the left-right direction. More specifically, the hole 115 is formed in the lower portion of each product display shelf 112.

Further, a plurality of suction ports 116 are formed in the lower front portion of the storage chamber 111, and an air outlet 117 is formed in the upper front portion of the storage chamber 111.

The suction ports 116 are openings for sucking air inside the storage chamber 111, respectively, and extend along the left-right direction of the storage chamber 111. Here, the front suction port 116 (hereinafter also referred to as the front suction port 116a) is located above the rear suction port 116 (hereinafter also referred to as the rear suction port 116b). That is, there is a height difference between the front suction port 116a (second suction port) and the rear suction port 116b (first suction port).

The air outlet 117 is an opening for blowing air into the storage chamber 111, and extends in the left-right direction of the storage chamber 111. A rectifying member (not shown) having a honeycomb structure, for example, is attached to the outlet 117.

The air circulation means 120 is configured to include an air wind passage 120a and a circulation fan 120b. The air air passage 120a is an air air passage extending from the suction port 116 to the air outlet 117 and each hole 115.

Such an air passage 120a includes a lower air passage 121, a first rear air passage 122, an upper air passage 123, a second rear air passage 124, and a third rear air passage 125. Is configured.

The lower air passage 121 is provided outside the storage chamber 111 and below the storage chamber 111 along the front-rear direction. The lower air passage 121 is divided into two, and has a first lower air passage 121a on the lower side and a second lower air passage 121b on the upper side. The first lower air passage 121a communicates with the front suction port 116a, and the second lower air passage 121b communicates with the rear suction port 116b.

The first rear side air passage 122 is provided outside the storage chamber 111 and on the rear side thereof along the vertical direction. As shown in FIG. 11, the first rear-side air passage 122 has one first passage air passage 122a and two second passage air passages 122b.

The first passage air passage 122a communicates with the second lower air passage 121b. The second passages for air passage 122b are provided on both the left and right sides of the first passage for passage air 122a in a manner partitioned from the first passage for air passages 122a, and communicate with the first lower air passages 121a. doing.

The upper air passage 123 is provided outside the storage chamber 111 and above it. The upper air passage 123 has two first upper air passages 123a and one second upper air passage 123b.

The first upper air passage 123a is provided at both left and right ends above the storage chamber 111 of the case main body 110, and the left first upper air passage 123a communicates with the left second passage air passage 122b. The first upper air passage 123a on the right side communicates with the second passage air passage 122b on the right side.

In addition, these first upper air passages 123a join each other at a joining portion 123c in the middle thereof and communicate with the air outlet 117. Further, the first upper air passage 123a is provided with a rectifying plate 123d at the confluence portion 123c. The straightening vane 123d is an elongated plate-shaped body whose left-right direction is the longitudinal direction, and straightens the passing air so as to be uniform left-right.

The second upper air passage 123b is provided between the two first upper air passages 123a on the rear side of the confluent portion 123c of the first upper air passage 123a. The second upper air passage 123b communicates with the first passage air passage 122a.

The second rear side air passage 124 extends in the up-down direction on the rear side of the storage chamber 111 and communicates with the second upper side air passage 123b. The second rear surface side air passage 124 is extended in front of the first rear surface side air passage 122 (the first passage air passage 122a and the second passage air passage 122b), and the first rear surface air passage 124 is provided. It is partitioned from the road 122.

The third rear side air passage 125 extends along the up-down direction on the rear side of the storage chamber 111. The third backside air passage 125 is extended between the second backside air passage 124 and the storage chamber 111, and is partitioned from the second backside air passage 124 such that their lower end portions are in communication with each other. The storage chamber 111 is in communication with each other through the holes 115 provided in the rear panel 114.

The circulation fans 120b are provided in plurality (three in the illustrated example), and are driven by a command given from a control unit (not shown) to circulate the air. The circulation fans 120b are provided below the first passage air passage 122a and the second passage air passage 122b in the first rear air passage 122, respectively.

In such an air circulation means 120, the circulation fan 120b provided in the lower part of the second passage 122b drives the air inside the storage chamber 111 through the front suction port 116a. The air that has been sucked in and is sucked out is sent to the air outlet 117 in a manner of passing through the first lower air passage 121a, the second passage air passage 122b, and the first upper air passage 123a, and is sent out through the air outlet 117. The air is blown into the storage chamber 111 to circulate the air between the inside and the outside of the storage chamber 111 through the front suction port 116a and the outlet 117.

Further, in the air circulation means 120, the circulation fan 120b provided at the lower part of the first passing air passage 122a is driven so that the air (internal air) inside the storage chamber 111 is sucked in through the rear suction port 116b. In this mode, the sucked air passes through the second lower air passage 121b, the first passage air passage 122a, the second upper air passage 123b, the second rear air passage 124, and the third rear air passage 125. The air sent to each hole 115 and blown out through each hole 115 is blown into the inside of the storage chamber 111, so that the inside and outside of the storage chamber 111 are connected to each other through the rear suction port 116b and each hole 115. It circulates air between them.

An evaporator (temperature adjusting means) 160 is provided in the second upper air passage 123b of the air air passage 120a. That is, the evaporator 160 is arranged in the case body 110 in a region above the storage chamber 111. The evaporator 160 constitutes a cooling unit that circulates a refrigerant together with the compressor 161, the condenser 162, and the expansion mechanism 163. Here, the compressor 161 is driven by a command given from the control means and compresses the refrigerant. The condenser 162 condenses the refrigerant compressed by the compressor 161. The expansion mechanism 163 adiabatically expands the refrigerant condensed in the condenser 162 to bring it into a low temperature and low pressure state.

The evaporator 160 exchanges heat between the air passing through the second upper air passage 123b from the rear to the front by driving the circulation fan 120b and the refrigerant adiabatically expanded by the expansion mechanism 163, more specifically. Is to cool the air passing through the second upper air passage 123b by evaporating the refrigerant. The refrigerant evaporated in the evaporator 160 returns to the compressor 161 and is compressed.

A plurality of blowoff amount adjusting members 140 are provided, and each is provided for each height level of the hole 115. The blowoff amount adjusting member 140 is opened and closed by a command given from the control means, and closes the corresponding hole 115 when it is closed. The blowout amount adjusting member 140 as described above adjusts the amount of air blown out from the hole 115 provided in the rear panel 114.

In the present embodiment, the valve body that opens and closes according to the command given from the control means is illustrated as the blowout amount adjusting member 140, but in the present invention, a damper may be applied as the blowout amount adjusting member 140. .. That is, the blowoff amount adjusting member 140 may adjust the opening rate of its own passage opening according to a command given from the control means. This also makes it possible to adjust the amount of air blown out from the hole 115.

The partition member 150 is a heat-insulating elongated shelf member whose left-right direction is the longitudinal direction. The partition member 150 is provided so as to penetrate an arbitrary hole 115 in the rear panel 114 of the storage chamber 111. More specifically, the partition member 150 penetrates through a hole 115 provided between the third-highest commodity display shelf 112 and the fourth-highest commodity display shelf 112 to form a base end. The portion 151 is in contact with the wall 127 that divides the third rear surface side air passage 125 and the second rear surface side air passage 124. In the hole 115 to which the partition member 150 is attached, the blowoff amount adjusting member 140 is driven to open and opened. The partition member 150 is partitioned into upper and lower parts by partitioning the storage chamber 111 and the third rear air passage 125.

In the showcase having the above-described configuration, the blow amount adjusting member 140 below the hole 115 through which the partition member 150 penetrates is driven to open, and the hole part through which the partition member 150 penetrates, in accordance with a command given from the control means. When the circulation fan 120b and the compressor 161 are driven in a state in which the blowout amount adjusting member 140 above 115 is driven to be closed and the holes 115 corresponding thereto are closed, the product placed on the product display shelf 112 Is cooled as follows.

The air sucked through the front suction port 116a passes through the first lower air passage 121a and enters each second passage air passage 122b, passes through each second passage air passage 122b, and each first upper passage. Enter the air passage 123a. The air that has entered each of the first upper air passages 123a merges at the merged portion 123c, and then collides with the straightening plate 123d, so that the air is uniformly rectified. The air thus rectified reaches the air outlet 117 and is blown out from the air outlet 117.

In this way, the air blown out from the air outlet 117 passes downward near the front opening 110a of the case body 110 to form an air curtain, and is thereafter sucked into the front suction port 116a and circulated as described above. repeat. By forming the air curtain in this way, invasion of heat from the outside is suppressed.

On the other hand, the air sucked through the rear suction port 116b passes through the second lower air passage 121b to enter the first passage air passage 122a, passes through the first passage air passage 122a, and passes through the second upper passage 122a. Enter the air passage 123b. The air that has entered the second upper air passage 123b passes through the evaporator 160 and is cooled. The air cooled by the evaporator 160 reaches the second rear surface side air passage 124, passes through the second rear surface side air passage 124, and then reaches the third rear surface side air passage 125, which is below the partition member 150. It is blown out from the hole 115 that opens.

In this way, the air blown out from the hole 115 flows from the rear to the front in the upper region of the commodity display rack 112 and the deck pan 113, and then is sucked into the rear suction port 116b and repeats the above-described circulation.

By circulating the internal air in the storage chamber 111 in this manner, the internal air in the upper region of the partition member 150 and the internal air in the lower region of the partition member 150 in the storage chamber 111 can be adjusted to different temperature zones. .. That is, the temperature of the internal air in the lower region of the partition member 150 can be made lower than that of the internal air in the upper region of the partition member 150.

As a result, in the storage chamber 111, the product in the upper region of the partition member 150 and the product in the lower region of the partition member 150 can be held in different temperature zones.

As described above, according to the showcase that is the fourth embodiment of the present invention, since the evaporator 160 is provided on the upper side of the storage chamber 111, the evaporator 160 is on the back side or the lower side of the storage chamber 111. The volume of the storage chamber 111 can be made sufficiently large as compared with the case where it is provided on the side, and a sufficient space for displaying products can be secured. Moreover, since the products in the upper region of the partition member 150 and the products in the lower region of the partition member 150 can be held in different temperature zones, the products in the storage chamber 111 can be held in different temperature states. That is, according to the above-mentioned showcase, it is possible to hold the products in the storage chamber 111 in different temperature states while ensuring a sufficient display space for the products.

In particular, a third rear air passage 125 is provided between the storage chamber 111 and the second rear air passage 124, and the third rear air passage 125 above the partition member 150 evaporates. Since the air cooled in the container 160 does not pass through, the upper portion of the third rear side air passage 125 above the partition member 150 is formed between the upper region of the partition member 150 in the storage chamber 111 and the second rear side air passage 124. It acts as a buffer region and can prevent loss due to heat conduction and dew condensation on the rear panel 114.

According to the above showcase, the air sucked through the front suction port 116a passes through the first lower air passage 121a, the second passage air passage 122b, and the first upper air passage 123a, and is blown out from the air outlet 117. Thus, the air is circulated between the inside and the outside of the storage chamber 111 through the front suction port 116a and the air outlet 117, and the air sucked through the rear suction port 116b is the second lower air passage 121b. , The first suction air passage 122a, the second upper air passage 123b, the second rear air passage 124, and the third rear air passage 125 so as to be blown out from each hole 115, and the rear suction Since the air is circulated between the inside and the outside of the storage chamber 111 through the opening 116b and the holes 115, it is possible to minimize the mixing of the air circulating in different paths. Since the amount of cooling in the evaporator 160 can be reduced to the minimum as described above, energy saving can be achieved as a result. Further, by saving energy, not only the running cost can be reduced, but also the cooling unit can be downsized, simplified and lightened.

In particular, since a height difference is provided between the front suction port 116a and the rear suction port 116b so that the front suction port 116a is located above the rear suction port 116b, the air circulating in different paths is provided. It is possible to further suppress the mutual mixing. Further, the air passing through the first upper air passage 123a collides against the straightening vane 123d and is uniformly rectified to the left and right, so that the air is blown out so that the air volume becomes uniform with respect to the opening area of the outlet 117. You can

Although the preferred embodiments 1 to 4 of the present invention have been described above, the present invention is not limited to these, and various modifications can be made.

In the first to fourth embodiments described above, the blowout amount adjusting members 40 and 140 are exemplified by the valve bodies that are opened and closed according to the command given from the control means, but in the present invention, the damper as described above is applied. Alternatively, it may be vertically slidable. Further, in the present invention, the blowoff amount adjusting members 40 and 140 may be manually driven to open and close, or may be driven to be opened to the storage chambers 11 and 111 side without depending on the control means. Good. The blowoff amount adjusting members 40 and 140 may be opened by inserting the partition members 50 and 150 into the holes 15 and 115.

Further, in the present invention, holes are formed in the blowoff amount adjusting members 40 and 140 so that the air amounts to the downstream side of the third rear side air passage when opened and to the storage chambers 11 and 111 side when closed are adjusted. Alternatively, the rear panels 14 and 140 may be appropriately provided with ventilation holes.

In Embodiment 4 described above, the second passage air passage 122b and the third rear surface side air passage 125 are not in communication with each other, but in the present invention, the second passage air passage (122b) and the third rear surface air passage 125 are formed. The side air passages (125) may communicate with each other via a communication port (not shown). Here, the communication port is normally closed by a shutter mechanism (not shown), and is opened by the opening operation of the shutter mechanism.

According to such a configuration, the shutter mechanism is opened so that the second passage air passage and the third rear air passage communicate with each other through the communication port, so that the air passing through the third rear air passage, That is, the air cooled in the evaporator (160) is blown out from the outlet (117) into the storage chamber (111) via the second passage air passage and the first upper air passage (123a). ..

Then, the internal temperature of the storage chamber can be made uniform, and thus the products stored in the storage chamber can be held in substantially the same temperature zone.

Although not particularly described in the fourth embodiment described above, in the present invention, in the first rear side air passage (122), the wall material forming the first passage air passage (122a) and the second passage. The wall material constituting the air passage (122b) is different from each other, and the wall material constituting the second rear air passage (124) and the third rear air passage (125) is also for the first passage. It is preferable that the wall materials constituting the air passage are different from each other. According to this, even when the temperature difference between the air passing through the first passage air passage and the air passing through the second passage air passage, the second rear surface side air passage and the third rear surface air passage is large. It is possible to suppress heat conduction between them.

10 Case Main Body 10a Front Opening 11 Storage Room 12 Product Display Shelf 14 Rear Panel 15 Hole 16 Suction Port 17 Air Outlet 20 Air Circulation Means 20a Air Airway 20b Circulation Fan 22 First Backside Airway 24 Second Backside Airway 25 3rd back side air duct 30 Blowout amount adjusting means 40 Blowout amount adjusting member 50 Partition member 60 Evaporator

Claims (8)

A storage room that is defined inside the case body and stores the products to be stored,
An air passage is provided inside the case body so as to communicate with the storage chamber through at least the suction port and the air outlet, and the air inside the storage chamber is provided between the air passage and the storage chamber. Air circulation means for circulating
A temperature adjusting unit that adjusts at least a part of the air circulated by the air circulating unit to a predetermined temperature, the showcase being provided in the upper air duct of the storage chamber in the air duct.
The air passage is
A first rear side air passage which is provided on the rear side of the storage chamber and allows the air sucked through the suction port to pass toward the upper air passage;
A second rear side air passage which is provided on the front side of the first rear side air passage so as to be separated from the first rear side air passage, and which allows the air adjusted by the temperature adjusting means to pass therethrough;
The storage chamber is provided between the storage chamber and the second rear air passage, and the second rear air passage is partitioned such that the lower end portions of the second rear air passage communicate with each other. A third rear side air passage communicating with a hole formed in the rear panel of the chamber,
A partition member that is provided in a manner to penetrate any of the hole portions in the back panel of the storage chamber, thereby partitioning the storage chamber and the third rear side air passage into upper and lower sections ,
A showcase comprising: a blowout amount adjusting member that is provided in each of the holes so as to be openable and closable and that is opened and closed regardless of whether or not the partition member is attached . The upper air passage is
A first upper air passage communicating with the first rear air passage and the air outlet;
A second upper air passage that communicates with the first rear air passage and is in communication with the second rear air passage in a manner partitioned from the first upper air passage, and that is provided with the temperature adjusting means. The showcase according to claim 1, wherein the showcase is provided. A blowout amount adjusting means is provided which is provided in the first upper air passage and is driven to adjust the amount of air that passes through the first upper air passage and is blown into the storage chamber. The showcase according to claim 2. The first upper air passage is provided so as to be openable and closable, and allows air to pass through the first upper air passage when opened, while air is passed through the first upper air passage when closed. The showcase according to claim 2, further comprising an opening/closing means for restricting passage of the vehicle. A storage room that is defined inside the case body and stores the products to be stored,
An air passage is provided inside the case body so as to communicate with the storage chamber through at least the suction port and the air outlet, and the air inside the storage chamber is provided between the air passage and the storage chamber. Air circulation means for circulating
Temperature adjusting means for adjusting at least a part of air circulated by the air circulating means to a predetermined temperature, the temperature adjusting means being provided in the upper air passage of the storage chamber in the air air passage.
It is a showcase with
The air passage is
A first rear side air passage which is provided on the rear side of the storage chamber and allows the air sucked through the suction port to pass toward the upper air passage;
A second rear side air passage which is provided on the front side of the first rear side air passage so as to be separated from the first rear side air passage, and which allows the air adjusted by the temperature adjusting means to pass therethrough;
The storage chamber is provided between the storage chamber and the second rear air passage, and the second rear air passage is partitioned such that the lower end portions of the second rear air passage communicate with each other. A third rear side air passage communicating through a hole formed in the rear panel of the chamber
Equipped with
By being provided in a manner to penetrate any of the hole portions in the rear panel of the storage chamber, a partition member that partitions the storage chamber and the third rear side air passage into upper and lower parts is provided,
The suction port is divided into a first suction port and a second suction port,
The upper air passage includes a first upper air passage that communicates with the air outlet, and a second upper air passage that is partitioned from the first upper air passage and that is provided with the temperature adjusting unit.
The first rear side air passage allows the air sucked through the first suction port to pass toward the second upper air passage,
The second rear side air passage allows the air that has passed through the second upper air passage to pass toward the third rear side air passage,
The air sucked through the second suction port is directed toward the first upper side air passage, which is separated from the first rear side air passage, the second rear side air passage, and the third rear side air passage. features and to Resid Yokesu further comprising an outer rear side air passage for passing Te. A storage room that is defined inside the case body and stores the products to be stored,
An air passage is provided inside the case body so as to communicate with the storage chamber through at least the suction port and the air outlet, and the air inside the storage chamber is provided between the air passage and the storage chamber. Air circulation means for circulating
Temperature adjusting means for adjusting at least a part of air circulated by the air circulating means to a predetermined temperature, the temperature adjusting means being provided in an upper air passage of the storage chamber in the air air passage
It is a showcase with
The air passage is
A first rear side air passage which is provided on the rear side of the storage chamber and allows the air sucked through the suction port to pass toward the upper air passage.
A second rear side air passage which is provided on the front side of the first rear side air passage so as to be separated from the first rear side air passage, and which allows the air adjusted by the temperature adjusting means to pass therethrough;
The storage chamber is provided between the storage chamber and the second rear air passage, and the second rear air passage is partitioned such that the lower end portions of the second rear air passage communicate with each other. A third rear side air passage communicating with a hole formed in the rear panel of the chamber;
Equipped with
By being provided in a manner to penetrate any of the hole portions in the rear panel of the storage chamber, a partition member that partitions the storage chamber and the third rear side air passage into upper and lower parts is provided,
The suction port has a first suction port and a second suction port,
The upper air passage has a first upper air passage that communicates with the outlet, and a second upper air passage that is partitioned from the first upper air passage and that is provided with the temperature adjusting unit.
The first rear side air passage is divided into a first passage air passage that allows the air sucked through the first suction port to pass toward the second upper air passage, and a first passage air passage. A second passage for allowing the air sucked through the second suction port to pass toward the first upper air passage,
The second rear-side air passage is characterized and to Resid Yokesu that the air passing through the second upper air passage is intended to pass toward the third rear-side air passage. The showcase according to claim 6 , wherein the first suction port and the second suction port are provided with a height difference such that one of them is located above the other. The first upper air passage is arranged in both side areas of the second upper air passage, and joins each other on the way to communicate with the air outlet.
The showcase according to claim 6 or 7 , further comprising: a rectifying plate that is provided at a confluence portion between the first upper air passages and that rectifies the air passing therethrough so as to be uniformly left and right.