JP2007330463A - Showcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a showcase capable of changing the state in an outlet where an air curtain is formed. <P>SOLUTION: A housing 10 includes a display chamber 17 forming an outlet 16 in the front, ducts 18a and 18b which are arranged to send an air current so as to form an air curtain in the outlet 16 of the display chamber 17. The air current is supplied by an air supply unit 30 through the ducts 18a and 18b. A door unit 50 comprises a frame member 51 shaped to fit into the outlet 16, a transparent member 55, and two door members 52a and 52b which are supported so as to be moved in connection with the frame member 51. The door unit 50 can be removably and integrally attached to the outlet 16 of the housing 10. When the door unit 50 is attached to the outlet 16, the outlet 16 can be partially opened or closed due to the two door members 52a and 52b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a showcase capable of displaying commodities such as food and beverage cans.

Patent Document 1 discloses a refrigerated showcase for installation on a tabletop. This refrigerated showcase has a vertically long display box with the upper surface and both left and right sides closed by transparent plates, and both front and rear sides closed by transparent doors. It has become.
JP-A 64-46556

  By the way, as a showcase, for the purpose of making it easy to take out a product, there is known a case where an outlet is formed in a part of the front so that the display room opens to the outside (hereinafter referred to as an open type). Yes. In such an open type showcase, since the outside world and the display room are in communication with each other through the outlet, it is difficult to maintain conditions such as temperature and humidity between the outside world and the display room. Methods such as forming curtains are being studied.

  On the other hand, as a showcase, a door is provided at the outlet, and the outlet is normally closed, and the door is opened only when the product is taken out or when the product is replenished, and a part of the outlet is opened. There is also a thing (hereinafter referred to as a closed type). Such a closed type showcase is particularly effective when the environmental difference between the outside world and the display room is relatively large, such as when the display room is refrigerated. Further, such a closed type showcase has an advantage that the environment in the display room can be maintained with less energy than the open type showcase. However, since the closed type has a door, there is a demerit that it is difficult for the user to take the product.

  Therefore, if an open type showcase and a closed type showcase can be used properly according to conditions such as products to be displayed, seasons, and customer flow, variations in the display of products increase. However, it is cumbersome and economical to prepare an open type showcase and a closed type showcase and rearrange or replace them in the store as necessary. .

  One embodiment of the present invention is a showcase having a housing, a wind supply unit, and a door unit. The housing includes a display chamber in which at least a part of the front is an outlet, and a duct arranged to supply air to the display chamber so that an air curtain is formed at the outlet. The wind supply unit can supply wind through the duct of the housing. The door unit includes a frame member formed in a shape corresponding to the outlet and at least one door member. The door member includes a transparent member and is supported so as to move with respect to the frame member. The door unit is integrally attached to the outlet of the housing in a detachable manner. In a state where the door unit is attached to the outlet, a part of the outlet can be opened and closed by moving at least one door member with respect to the frame.

  According to this showcase, the door unit formed integrally can be attached to or detached from the housing. Therefore, without preparing both an open-type showcase and a closed-type showcase, you can simply install and remove the integrally formed door unit from the housing, such as the products to be displayed, the season, and the flow of customers. Depending on the conditions, it can be used like an open type showcase or a closed type showcase. Therefore, it is possible to omit rearranging and replacing the showcase in the store, and it is economical.

  Further, according to this showcase, the door unit includes a frame member formed in a shape corresponding to the outlet, and at least one door member supported so as to move with respect to the frame member. Can be attached to and detached from the outlet For this reason, it is possible to save the parts such as the frame member from being disassembled / assembled or stored in the state of the parts. For example, after removing the door from the frame and then removing the screwed frame from the housing, it is possible to open the outlet by simply removing the door unit from the housing without taking multiple steps. it can. Similarly, the door unit can be easily attached to the housing.

  Moreover, according to this showcase, after removing a door member, a frame member does not remain in the vicinity of an outlet. If the frame member remains in the vicinity of the outlet, it is not preferable in terms of hygiene because it is not only preferable in appearance as an open-type showcase but also difficult to remove dirt. In addition, the vicinity of the outlet is a portion that is easily noticed by customers.

  That is, according to this showcase, in the state where the door unit is attached, the appearance and function are substantially the same as the closed type. On the other hand, when the door unit is removed from the housing, the appearance and function are almost the same as the open type. Therefore, when the door unit is attached and when the door unit is removed, the appearance and function can be handled in the same manner as each type of dedicated showcase.

  Further, the door unit includes at least one door member supported to move relative to the frame member. For this reason, even if this door unit is attached to the housing, a part of the outlet can be opened and closed by moving at least one door member relative to the frame. Therefore, it is possible to take out the product from the display room and carry in the product into the display room in the same manner as in the closed type showcase. Further, since the door unit is attached to the outlet where the air curtain is formed, the effect of the air curtain can be obtained even when the door member is moved to open a part of the outlet. Therefore, it is possible to provide a showcase in which the display room can be easily isolated from the outside world with respect to a closed type showcase that is simply opened and closed by a door.

  In this showcase, when the duct is provided with an opening for sucking air near the outlet or blowing out air near the outlet, the door unit is removed (detached) from the housing. It is preferable that a part of the opening is closed when the opening is fully opened and the door unit is attached (attached) to the housing.

  This can be realized, for example, by providing a switch for adjusting the opening degree of the opening and having a structure in which the switch is turned on / off by attaching / detaching the door unit. Preferably, by attaching the door unit to the housing, a part of the door unit interferes with at least a part of the opening, and the effective opening area of the opening is reduced. In this case, no switch or electrical wiring is required, and the opening of the opening can be adjusted with a simple structure.

  When the door unit is removed from the housing, the opening is fully open, and when the door unit is attached to the housing, a showcase configured to close a part of the opening, or by attaching the door unit to the housing A showcase configured such that a part of the door unit interferes with at least a part of the opening, and the effective opening area of the opening is reduced, isolates the display room from the outside to some extent, and the temperature or humidity in the display room. It is suitable for a showcase for keeping conditions such as the above constant. For example, a showcase whose temperature is adjusted by blowing cold air or hot air.

  Taking a refrigerated showcase as an example, when used like an open type showcase, there is no separation between the outside and the display room, so the air volume of the air curtain needs to be relatively large. On the other hand, when it is used as a closed type showcase, the outside space is usually separated from the display room by the door unit, so that the temperature in the display room is relatively low even if the air curtain air volume is not so large. Can be kept at a low temperature. Furthermore, by reducing the amount of air circulating through the duct, cooler air can be supplied into the display room. Therefore, by using the closed type, not only the performance of blocking the outside world is improved, but also the temperature in the display room can be kept lower.

  When the opening is provided below the outlet, the opening is preferably provided at a position lower than the height of the bottom of the display chamber. By doing in this way, even if a door unit dew condensation in the state where the door unit was attached to the housing, it can control that the dew condensation water flows into the display room.

  A wind supply unit including a Peltier element is suitable for a compact wind supply unit capable of supplying cold air or hot air. Therefore, the refrigerated or warm showcase can be reduced in size. Therefore, for example, it is possible to provide a small-sized refrigerated showcase suitable for installation on a shelf such as a convenience store.

  Further, according to this showcase, the ducts of the housing are disposed below and behind the display chamber, and open at the lower end of the outlet and the upper rear side of the display chamber (for example, one is an opening for sucking air). And the other has an opening for blowing wind (air), the housing further has a transparent canopy that reaches the upper end of the outlet from the upper rear side of the display chamber. Thus, it is preferable to guide the air flow between the opening of the duct provided on the upper rear side of the display chamber and the outlet. The transparent canopy as described above has a function of guiding indoor light into the display room to make it easy to see the product, and an air flow between an opening of a duct provided above (upper rear side) and an outlet of the duct. Therefore, it can be said to be one of the preferred embodiments of this showcase.

  According to this showcase, the shape and style of the door unit are arbitrary. Therefore, the at least one door member included in the door unit may be, for example, a swing type. One preferable embodiment of the door unit includes a door having a plurality of door members each including a transparent member, a frame body that holds the transparent member, and a roller attached to the outer periphery of the frame body. be able to. In this case, a plurality of guide grooves corresponding to the plurality of door members may be formed on the upper inner surface and the lower inner surface of the frame member, respectively, and the door members may be slidably held on the frame members. By doing so, a slide-type door can be realized with a relatively simple configuration.

  Furthermore, in this showcase, the mechanism for attaching the door unit to the housing may be any mechanism other than fitting or screwing. Considering the ease of attachment and detachment and the fact that the structure for attachment on the housing side hardly remains, the mechanism for attaching the door unit to the housing is preferably fitted. When the door unit is attached to the housing by fitting, it is preferable to provide a seal member on the outer periphery of the frame member. By providing the seal member on the outer periphery of the frame member, when the door unit is attached to the outlet of the housing, the seal member is positioned between the frame member and the inner surface that defines the outlet. For this reason, even if it fits in, a door unit can be stably attached to a housing, and the airtightness between these can be improved.

  That is, another embodiment of the present invention has a housing including a display chamber in which at least a part of the front is an outlet, and is detachably fitted into an outlet of a showcase capable of forming an air curtain at the outlet. A door unit that can be attached (attached). The door unit includes a frame member formed in a shape corresponding to the outlet, at least one door member provided with a transparent member and supported to move with respect to the frame member, and provided on the outer periphery of the frame member. The seal member is formed integrally. The door unit can be attached to the housing outlet so that the seal member is located between the frame member and the inner surface defining the outlet.

  Another aspect of the present invention is a door unit that can be attached to and detached from the outlet. For example, what can be attached to and detached from an outlet of an existing open type showcase is economical because it can obtain a function as a closed type without replacing the showcase itself.

  The seal member may be provided in the entire region so as to surround the outer periphery of the frame, or may be provided in a part of the outer periphery of the frame. The seal member may be provided, for example, intermittently on the upper and lower ends of the frame, both the left and right sides of the frame, or the outer periphery of the frame.

  Yet another embodiment of the present invention is a method for adjusting the air volume of a showcase capable of forming an air curtain. The showcase includes a display chamber having an outlet at least in front of the display case, and a duct arranged to supply air to the display chamber so that an air curtain is formed at the outlet. And a wind supply unit capable of supplying wind via a duct, and a door unit that is detachably attached to the outlet of the housing. The duct is provided with an opening for sucking air near the take-out port or blowing out air near the take-out port. The air volume adjustment method includes reducing the effective opening area of the opening by attaching the door unit to the housing to cause a part of the door unit to interfere with at least a part of the opening.

  When the door unit is attached to the housing, the outside space is usually separated from the display room by the door unit, so the air flow rate of the air curtain is reduced compared to when the door unit is removed from the housing. In the case of refrigeration, the temperature of the supplied wind can be lowered to keep the display chamber in a desired environment at a lower temperature. That is, according to this air volume adjustment method, in the refrigerated showcase, the condition in the display room can be set to a state more suitable for low temperature refrigeration by one action of attaching the door unit.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing the appearance of a showcase according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the showcase of FIG. FIG. 3 is a cross-sectional view of the showcase of FIG. 1 with the door unit attached. FIG. 4 is a cross-sectional view of the showcase of FIG. 1 with the door unit removed. This showcase 1 is a showcase of a size and weight that can be installed on a shelf of products displayed at room temperature called a gondola at a convenience store, and functions as a device for refrigeration of products such as food and beverage cans. It also functions as a showcase for displaying products.

  The showcase 1 includes a housing 10 including a display chamber 17, a wind supply unit 30 for supplying cool air to the display chamber 17, and a door unit 50 attached to the outlet 16 of the display chamber 17. . The housing 10 has a transparent canopy (ceiling) 11 that covers the upper portion of the display chamber 17, side walls 12 and 13, a rear wall 14, and a lower wall 15 of the display chamber 17, and is formed in a horizontally long shape. . The transparent canopy 11 employs a hollow double acrylic structure wall that is lightweight, strong, and has high heat insulation performance. The transparent canopy 11 is formed so that the upper wall portion 11a is substantially flat and the front portion 11b is curved downward to form the upper end of the outlet 16.

  A part of the front of the housing 10 is opened to become a product outlet 16, and a horizontally long display chamber 17 is formed therein. The housing 10 further includes ducts 18 a and 18 b arranged to supply the display chamber 17 with a wind that forms an air curtain at the outlet 16. Inside the display chamber 17, first and second display shelves 19 a and 19 b are arranged. The second display shelf 19 b also serves as the bottom (floor) 17 a of the display chamber 17.

  The ducts 18a and 18b extend below and behind the display chamber 17, respectively. The duct 18a has a plurality of first openings 21 formed at the lower end of the outlet 16 (below the front end of the display chamber 17). The duct 18 b has a plurality of second openings 22 formed on the upper rear side of the display chamber 17 (the rear side of the upper end portion of the display chamber 17). The first opening 21 is provided below the outlet 16 and at a position lower than the height of the bottom of the display chamber 17. Heat insulation materials 23a and 23b are provided below and behind the ducts 18a and 18b, respectively, and a heat exhaust path 24 extends vertically inside the housing 10 behind the heat insulation material 23b (behind the housing 10). It extends. A substrate 25 including a control unit is disposed below the heat exhaust path 24.

  In the showcase 1 of this example, the plurality of first openings 21 are inlets for sucking air, and the plurality of second openings 22 are outlets for blowing wind (air). Further, in the transparent roof 11 described above, the front end portion 11c of the front portion 11b constitutes the upper end of the outlet 16 to guide the light in the store interior to the inside of the display chamber 17 and make it easy to see the merchandise. It functions to guide the air flow between the plurality of outlets 22 provided above the chamber 17 and the outlet 16.

  The wind supply unit 30 includes a Peltier element unit 31 and a cross flow fan 32 for blowing air, and cool air for forming an air curtain that flows downward from above to the outlet 16 via ducts 18a and 18b. Supply. The cross flow fan 32 blows cold air from the upper opening 22 of the duct 18b extending vertically, so that the air sucked into the duct 18a and the duct 18b from the opening (suction port) 21 at the tip of the duct 18a is ducted. A flow toward the opening (blowout port) 22 at the upper end of 18b is formed. The Peltier element unit 31 is disposed in the middle of the duct 18b, flows through the ducts 18a and 18b, and cools the air blown from the opening 22 at the upper end of the duct 18b. The wind supply unit 30 includes a plurality of Peltier elements (only one is shown in the figure) 31a, and the first fin 31b connected to the Peltier element 31a protrudes from the duct 18b extending vertically, and the second The fin 31 c protrudes into the exhaust heat path 24. In the heat exhaust path 24, a heat exhaust fan 40 is disposed behind the second fin 31c, and a wind direction guide 41 is provided below the heat exhaust fan 40. The heat absorbed by the first fin 31b by the Peltier element unit 31 is released to the outside of the housing 10 through the exhaust heat path 24 by the second fin 31c.

  The cold air blown horizontally forward from the outlet 22 to the display chamber 17 by the crossflow fan 32 has a shape in which the front end portion on the front side of the canopy 11 is curved downward, and therefore, along the front end portion of the canopy 11. Cold wind flows downward. A suction port 21 of the duct 18 a disposed below the intake port 16 sucks air below the intake port 16. As a result, cold air flows from the upper side to the lower side of the outlet 16 to form an air curtain.

  FIG. 5 is a front view of the removable door unit 50 for the outlet 16 of the housing 10. FIG. 6 shows a cross-sectional view taken along the line VI-VI in FIG. As shown in FIG. 3, the door unit 50 can be attached to the outlet 16 to make the display chamber 17 a closed type. Moreover, as shown in FIG. 4, if the door unit 50 is removed from the exit 16, the display chamber 17 can be made into an open type. The door unit 50 includes a frame member 51 formed in a shape corresponding to the outlet 16, and two door members 52 a and 52 b supported so as to move with respect to the frame member 51. It is assembled so that it can be installed. The frame member 51 includes an upper member 51a, a lower member 51b arranged in parallel to the upper member 51a, and left and right side members 51c and 51d arranged in parallel to each other, and integrated into a frame shape. Is formed. As the upper member 51a and the lower member 51b, for example, those formed of a synthetic resin material can be used. As the left and right side members 51c and 51d, for example, an extruded product of aluminum or a material formed of a synthetic resin material can be used.

  The frame member 51 is provided with a seal member 53 having a substantially oval cross section so as to surround the outer periphery thereof. As the sealing member 53, for example, a silicon rubber extruded product, a silicon foam material, a foamed polyurethane material, or the like can be used. Two guide grooves 54a are formed on the inner surface of the upper member 51a serving as the upper inner surface of the frame member 51 and the inner surface of the lower member 51b serving as the lower inner surface of the frame member 51 so as to correspond to the two door members 52a and 52b. And 54b are formed.

  Each of the two door members 52 a and 52 b includes a transparent member 55, a frame body 56 that holds the transparent member 55, and a plurality of roller units 57 that are attached to the outer periphery of the frame body 56. The transparent member 55 employs a wall made of two acrylic plates that are lightweight, strong, and highly heat-insulating. Even if the door unit 50 is attached to the housing 10, the commodity in the display chamber 17 can be viewed from the outside through the transparent member 55. Further, the inside of the display chamber 17 can be brightened by taking in light from the outside into the display chamber 17 through the transparent member 55.

  Each of the plurality of roller units 57 includes a roller 57a and a support member 57b that rotatably supports the roller 57a. The frame 56 sandwiches and holds the transparent member 55 and holds the support members 57b of the plurality of roller units 57 so as to hold them. The two door members 52a and 52b are slidably held in two guide grooves 54a and 54b formed in the frame member 51, respectively.

  The door unit 50 is integrally attached to and detached from the outlet 16 of the housing 10. As shown in FIGS. 1 and 3, when the door unit 50 is attached to the outlet 16 of the housing 10, the two door members 52 a and 52 b are slid with respect to the frame member 51, thereby The part is opened and closed. In this case, the showcase 1 can be used like a closed type showcase. On the other hand, as shown in FIG. 2 and FIG. 4, the housing 10 can be detached from the outlet 16. In this case, the showcase 1 can be used like an open type showcase.

  FIG. 7 is an enlarged view of a region surrounded by a one-dot chain line VII in FIG. FIG. 8 is an enlarged view of a region surrounded by a one-dot chain line VIII in FIG. As described above, the showcase 1 of this example is a refrigerated showcase that can hold the inside of the display chamber 17 (inside the cabinet) in a refrigerated state. When used like the open type showcase 1, there is no wall or the like between the outside and the display room 17. For this reason, in order to effectively shut off the display chamber 17 from the outside and maintain the conditions of the display chamber 17, it is necessary to make the air volume of the air curtain relatively large. On the other hand, when used as a closed type showcase 1, the outside world and the display chamber 17 are usually separated by a door unit 50. For this reason, even if the air volume of the air curtain is not so large, the temperature in the display chamber 17 can be kept relatively low.

  In the showcase 1 of this example, the plurality of first openings 21 are formed at the lower end of the outlet 16 (below the front end of the display chamber 17), and the door unit 50 is removed from the housing 10 (detachment). The plurality of first openings 21 are fully opened. On the other hand, when the door unit 50 is attached (attached) to the housing 10, part of the door unit 50 interferes with part of the plurality of first openings 21, and the effective opening area of these first openings 21 is It is supposed to decrease. For this reason, since the pressure loss of the first opening 21 increases, the amount of air sucked into the wind supply unit 30 decreases, and the amount of cool air circulating inside the display chamber 17 decreases.

  That is, the showcase 1 of this example can vary not only the use and appearance but also the temperature conditions in the display chamber 17 between the state in which the door unit 50 is attached and the state in which the door unit 50 is removed. . In the showcase 1 of this example, when the door unit 50 is attached to the outlet 16 of the housing 10, the opening 21 has a width b as shown in FIG. Therefore, the effective opening area of the opening 21 is b / a with respect to the width a in the fully opened state, and is reduced by (ab) / a. The suction amount of the wind supply unit 30 is reduced, and the amount of air supplied from the wind supply unit 30 to form the air curtain is reduced. Further, since the amount of air cooled by the Peltier element unit 31 of the wind supply unit 30 is reduced, the temperature of the cold air supplied from the wind supply unit 30 to the display chamber 17 is lowered. In this example, for example, when the outside air temperature is about 25 ° C., the inside of the display chamber 17 can be maintained at about 8 ° C. or less.

  On the other hand, in the state where the door unit 50 is removed from the outlet 16 of the housing 10, as shown in FIG. 8, the opening 21 is in the state of width a, so that the effective opening area is in the fully opened state. Accordingly, the amount of air supplied from the air supply unit 30 to the display chamber 17 increases, and the temperature of the cold air does not decrease as in the closed state. The showcase 1 of this example is designed so that when the outside air temperature is about 25 ° C., the inside of the display chamber 17 can be maintained at about 15 ° C. or less in the open state. The conditions in the open display chamber and the closed display chamber are examples, and the performance of the wind supply unit 30 including the Peltier element 31 a and the door unit 50 when the door unit 50 is attached to the housing 10. The effective opening efficiency can be changed depending on the rate at which the effective opening efficiency changes due to interference between the first opening 21 and the plurality of first openings 21.

  As described above, according to the showcase 1 of this example, when used as the open type showcase 1, the plurality of first openings 21 are fully opened by removing the door unit 50 from the housing 10. Therefore, a relatively large air volume can be secured. That is, in the showcase 1, in the open type state in which the door unit 50 is not attached, the air supply unit 30 can ensure the air volume for forming the air curtain rather than automatically lowering the temperature. The display room 17 is selected and maintained at a temperature suitable for refrigeration of goods such as drinks.

  On the other hand, when used as the closed type showcase 1, by attaching the door unit 50 to the housing 10, a part of the door unit 50 interferes with at least a part of the plurality of first openings 21. The effective opening area can be reduced and the temperature can be lowered. That is, in the showcase 1, in the closed type state in which the door unit 50 is mounted, it is selected that the temperature of the wind supply unit 30 automatically lowers the temperature rather than ensuring the air volume, and the display chamber 17 is further expanded. It is maintained at a temperature suitable for refrigeration of foods that are desirably stored at low temperatures.

  Moreover, according to the showcase 1 of this example, the door unit 50 assembled integrally can be attached to or detached from the housing 10. Therefore, without preparing both an open-type showcase and a closed-type showcase, the door unit 50 formed integrally can be removed from the housing 10 according to the conditions such as the season and the flow of customers. Thus, it can be used like an open type showcase or a closed type showcase. Moreover, according to the showcase 1 of the present example, the door unit 50 can be attached integrally, so that it can be easily attached to and detached from the housing 10. For this reason, changing the type of the showcase 1 is time-consuming and requires only a user or a store clerk to manually attach and detach the door unit 50 with one touch or several touches without using tools. Furthermore, since the detached door unit 50 can be stored without being disassembled into parts, storage and management are easy. Further, since the door unit 50 can be removed even when the door member is dirty or damaged, maintenance is easy and replacement with a spare is easy.

  Furthermore, according to the showcase 1 of the present example, since the frame member 51 is provided in the door unit 50, the frame member 51 may remain in the vicinity of the outlet 16 when the door unit 50 is removed. Absent. Therefore, even if it is used like the open type showcase 1, the appearance is good. Moreover, since there are few parts to which dirt etc. adhere, cleaning is also easy, hygiene is preferable, and since there are few protrusions etc., it is a preferable form also in safety. And since the taking-out port 16 is open | released, the showcase 1 which is easy to take out the goods from a display room can be provided.

  On the other hand, in the closed type, even when the door unit 50 is attached to the housing 10, the door 16 can be partially opened and closed by moving the two door members 52a and 52b with respect to the frame. it can. Therefore, it is easy to take out the product from the display room 17 and carry the product into the display room 17. Further, even in the closed state, the cold air supply unit 30 forms a cold air curtain in the portion of the outlet 16 inside the door unit 50. For this reason, even when the door member 52a or 52b is opened, it is possible to obtain a blocking effect from the outside by the air curtain. For this reason, with respect to the showcase in which the outlet is simply blocked by the door, the cold insulation effect is improved, and a showcase suitable for low-temperature storage can be provided.

  Furthermore, according to the showcase 1 of the present example, the first opening 21 is provided at the lower end of the outlet 16 and at a position lower than the bottom height of the display chamber 17. Even if condensation occurs, it is difficult for the condensed water to flow into the display chamber 17.

  In the showcase 1 of the present example, the first opening 21 is used as a suction port, the second opening 22 is used as a blow-out port, and an air curtain is formed by wind flowing from the upper side to the lower side at the outlet port 16. However, the direction of the air curtain is not limited to this. For example, the first opening 21 may be used as a blowout port, the second opening 22 may be used as a suction port, and the air curtain may be formed by wind flowing from the lower side to the upper side at the outlet port 16.

  Further, in the showcase 1 of the present example, the first opening 21 is provided at a lower end of the outlet 16 and at a position lower than the bottom height of the display chamber 17, and the second opening 22 is provided above the display chamber 17. Although provided on the rear side, the position of the second opening 22 is not limited to this. By disposing at least one of the first opening 21 or the second opening 22 in the vicinity of the outlet 16 and attaching the first opening 21 or the second opening 22 to the housing 10, a part of the door unit 50 is attached to the first opening 21 or the second opening 22. By setting so as to interfere with at least a part, the air volume of the air curtain can be easily adjusted.

  Further, in the showcase of this example, the door unit 50 includes two door members 52a and 52b. However, the door unit may include one door member, and 3 There may be more than one.

  The showcase of the present invention is not limited to a refrigerated showcase. According to the showcase of the present invention, it can be used in a warm showcase that holds the display room at a high temperature relative to the outside, or a showcase that is adjusted to a humidity different from the outside.

The perspective view which shows the external appearance of the showcase which concerns on one Embodiment of this invention. The disassembled perspective view which shows the showcase of FIG. Sectional drawing which shows the showcase of FIG. 1 in the state in which the door unit was attached. Sectional drawing which shows the showcase of FIG. 1 in the state from which the door unit was removed. The front view which shows the door unit which the showcase of FIG. 1 has. Sectional drawing cut | disconnected and shown along the VI-VI line in FIG. The figure which expands and shows the area | region enclosed with the dashed-dotted line VII in FIG. The figure which expands and shows the area | region enclosed with the dashed-dotted line VIII in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Showcase, 10 Housing 11 Canopy, 16 Outlet 17 Display room, 18a, 18b Duct 21 opening, 30 Air supply unit 31a Peltier element, 50 Door unit 51 Frame member, 52a, 52b Door member 53 Seal member, 55 Transparent member 56 frame, 57a roller

Claims (10)

A housing including a display chamber in which at least a part of the front is an outlet, and a duct arranged to supply air to the display chamber so that an air curtain is formed at the outlet;
A wind supply unit capable of supplying wind through the duct;
A frame member formed in a shape corresponding to the outlet, and at least one door member that is supported so as to move with respect to the frame member and includes a transparent member, and is integrated with the outlet of the housing. A door unit that is detachably attached,
In a state where the door unit is attached to the outlet, at least a part of the outlet can be opened and closed by moving the at least one door member relative to the frame member. In Claim 1, the duct is provided with an opening for sucking air in the vicinity of the outlet or blowing out air to the vicinity of the outlet,
In a state where the door unit is removed from the housing, the opening is fully open, and a part of the opening is closed when the door unit is attached to the housing. In Claim 1, the duct is provided with an opening for sucking air in the vicinity of the outlet or blowing out air to the vicinity of the outlet,
A showcase in which by attaching the door unit to the housing, a part of the door unit interferes with at least a part of the opening, and an effective opening area of the opening is reduced.   The opening for sucking air in the vicinity of the outlet or blowing out air to the vicinity of the outlet according to claim 2 or 3, wherein the opening is below the outlet and has a height at the bottom of the display chamber. A showcase that is installed at a lower position.   The showcase according to claim 1, wherein the wind supply unit includes a Peltier element and supplies cold air or hot air through the duct. In Claim 1, the duct of the housing is disposed below and behind the display chamber, and an opening is formed at each of a lower end of the outlet and an upper rear side of the display chamber,
The housing further has a transparent canopy reaching the upper end of the outlet from the upper rear side of the display chamber,
The canopy guides air flow between the opening of the duct provided at the upper rear side of the display chamber and the outlet. In Claim 1, each of the upper inner surface and the lower inner surface of the frame member of the door unit is formed with a plurality of guide grooves,
The door unit includes a plurality of the door members further including a frame body that holds the transparent member, and a roller that is attached to the outer periphery of the frame body.
Each of these door members is a showcase that is slidably held by the frame member.   2. The frame member according to claim 1, wherein a seal member is provided on an outer periphery of the frame member, and the seal member is attached to the frame member and the outlet when the door unit is attached to the outlet of the housing. The showcase is located between the inner surface that defines the airtightness between these. An air volume adjustment method for a showcase capable of forming an air curtain,
The showcase is
A housing including a display chamber in which at least a part of the front is an outlet, and a duct arranged to supply air to the display chamber so that an air curtain is formed at the outlet;
A wind supply unit capable of supplying wind through the duct;
A door unit that is detachably attached to the outlet of the housing integrally;
The duct is provided with an opening for sucking air in the vicinity of the outlet or blowing out wind to the vicinity of the outlet,
The air volume adjustment method is
A method of adjusting air flow, comprising: attaching the door unit to the housing, causing a part of the door unit to interfere with at least a part of the opening, and reducing an effective opening area of the opening. A door unit having a housing including a display chamber in which at least a part of the front is an outlet, and detachably attached to the outlet of the showcase capable of forming an air curtain at the outlet;
A frame member formed in a shape corresponding to the outlet;
At least one door member comprising a transparent member and supported to move relative to the frame member;
A seal member provided on the outer periphery of the frame member;
The door unit is integrally attached to the outlet, and the seal member is located between the frame member and an inner surface defining the outlet.

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