JP2005156034A - Showcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To lead cold air into a shelf duct without hindrance in a showcase wherein the upper end of a cooler is positioned above a shelf. <P>SOLUTION: The showcase 1 is constituted to lay shelves 24 for merchandise display in a display chamber 7 opened to a front face, to form the shelf duct 26 at each shelf 24, and to lead cold air rising in a cold air duct 6 formed behind the display chamber 7, into the shelf duct 26 so as to be dischargeable into the display chamber 7 below the shelf. The showcase 1 is provided with the cooler 13 disposed in the cold air duct 6 so that the upper end is positioned above the shelf duct 26; a communicating passage 29 for communicating the cold air duct 6 above the cooler 13 with the shelf duct 26; and a damper 33 provided above the cooler 13 to open/close the cold air duct 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a showcase in which a shelf duct is formed on a shelf installed in a display room.

  Traditionally, showcases that sell and sell canned beverages, beverages in plastic bottles, drinks, etc. have a shelf for product display installed in the display room that opens to the front, and an electric heater is attached to this shelf and the bottom of the shelf is attached. Form a shelf duct. For example, when heating is used above the shelf and cooling is used below, the cool air is introduced into the shelf duct from the cool air duct formed at the rear of the display chamber and discharged into the display chamber below the shelf. Then, the electric heater is heated to heat the display chamber above the shelf and cool the bottom.

In addition, the introduction of cold air into the shelf duct has been performed by opening and closing the cold air duct with a damper extending rearward from the shelf (see, for example, Patent Document 1).
JP 2000-258031 A

  In such a heating / cooling switching type (called HOT & COLD) showcase, when trying to reduce the product height due to the problem of installation space, it becomes impossible to provide a cooler below the display room, It will be installed vertically in the cold air duct behind the display room. The cool air is vented from the bottom to the top of this cooler, but a cooler with an appropriate size is required to obtain the required cooling capacity. Will be extended.

  Therefore, in the case where cold air is introduced into the shelf duct by a damper extending behind the shelf as in the prior art, there has been a problem that cold air cannot be introduced into the shelf at a position lower than the upper end of the cooler.

  The present invention has been made to solve the conventional technical problems, and in a showcase in which the upper end of the cooler is located above the shelf, cold air can be introduced into the shelf duct without any trouble. is there.

  In the showcase of the present invention, a shelf for displaying merchandise is installed in a display chamber that opens to the front, and a shelf duct is formed in the shelf, and the cool air rising in the cool air duct formed at the rear of the display chamber is shelved. A cooler that is introduced into a duct and can be discharged into a display chamber below the shelf, is disposed in the cool air duct, and has an upper end located above the shelf duct, and a cool air duct above the cooler And a shelf duct, and a damper provided above the cooler for opening and closing the cool air duct.

  A showcase according to a second aspect of the present invention is characterized in that the shelf is provided with an electric heater.

  The showcase of the invention of claim 3 is provided in the cold air duct above the cooler in each of the above inventions, has an area for closing the cold air passage of the cold air duct, and the through holes for the cold air flow are left and right A plurality of receiving members are provided across the damper, and the damper is provided to the left and right, and moves forward and backward to open and close each through hole.

  The showcase of the invention of claim 4 is characterized in that it includes a knob facing the rear surface of the display chamber and a link mechanism for moving the damper in the front-rear direction as the knob moves in the left-right direction.

  The showcase of the invention of claim 5 is characterized in that in claim 3 or claim 4, the showcase is provided with holding means for holding the state where the damper is moved to the front side and the state where it is moved to the rear side.

  The showcase of the invention of claim 6 comprises a regulating means for regulating the posture of the damper in the state where the damper is moved to the front side and the state where the damper is moved to the rear side in claim 3, claim 4 or claim 5. Features.

  According to the present invention, a shelf for displaying merchandise is installed in a display chamber that opens to the front, and a shelf duct is formed in the shelf, and the cool air rising in the cool air duct formed at the rear of the display chamber is supplied to the shelf duct. In the showcase introduced into the display room below the shelf, the cooler is disposed in the cool air duct and the upper end is located above the shelf duct, and the cool air duct and the shelf above the cooler. A communication passage that communicates with the duct and a damper that is provided above the cooler and that opens and closes the cool air duct are provided. Therefore, if the cool air duct is closed by the damper, the communication passage is opened from the cool air duct above the cooler. After that, cold air can be introduced into the shelf duct.

  Thereby, even when the upper end of the cooler comes above the shelf duct, cold air can be introduced into the shelf duct and discharged into the display chamber below the shelf without any trouble.

  According to the invention of claim 2, since the shelf is provided with the electric heater in addition to the above, the electric heater is energized in a state where the cold air duct is closed by the damper and the cold air is discharged from the shelf duct into the display chamber below the shelf. As a result, the display chamber above the shelf can be used for heating, and the display chamber below the shelf can be used for cooling. This makes it possible to sell products in a single showcase for hot / cold sales, improving versatility.

  According to the invention of claim 3, in addition to each of the above inventions, the cool air duct is provided in a cool air duct above the cooler, has an area for closing the cool air passage of the cool air duct, and the through holes for circulating the cool air are left and right. A plurality of receiving members are provided over the left and right, and the damper is provided on the left and right sides, and is moved back and forth to open and close each through hole. Then, the air flows uniformly through the cold air duct through the plurality of through holes. And in the state which closed the through-hole with the damper, the cool air leak from the said through-hole can be prevented effectively. This ensures that the cool air duct is closed by the damper when discharging cool air only to the bottom of the shelf without deteriorating the cooling performance when supplying cool air to the top of the shelf, so that the temperature in the display chamber above and below the shelf is accurately adjusted. It is possible to manage it.

  According to the invention of claim 4, in addition to the above, there is a knob that faces the back of the display chamber, and a link mechanism that moves the damper in the front-rear direction as the knob moves in the left-right direction. The operability when opening and closing the cold air duct is remarkably improved.

  According to the invention of claim 5, in addition to the invention of claim 3 or 4, the damper is provided with holding means for holding the state where the damper is moved to the front side and the state where it is moved to the rear side. Thus, the open / closed state of the cold air duct can be stably maintained.

  According to the invention of claim 6, in addition to the invention of claim 3, claim 4 or claim 5, the restricting means for restricting the posture of the damper in a state where the damper is moved to the front side and a state where the damper is moved to the rear side. Thus, the inconvenience that the posture of the damper becomes unstable and the cold air leaks from the through hole can be avoided.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a showcase 1 to which the present invention is applied, and FIG. 2 is a longitudinal side view of the showcase 1. The showcase 1 of the embodiment is for displaying and selling canned beverages, beverages in plastic bottles, drinks and the like in stores such as supermarkets and convenience stores. The main body is constituted by.

  A partition plate 3 is disposed inside the heat insulating wall 2 with a gap, and a deck pan 4 is provided at the lower end of the partition plate 3 with a space from the bottom wall of the heat insulating wall 2. A series of cool air ducts 6 are formed between the partition plate 3, the deck pan 4, and the heat insulating wall 2, and a display chamber 7 that opens to the front is formed inside the partition plate 3 and the deck pan 4. In addition, 8 and 8 are side glass, and are attached to the both sides of the heat insulation wall 2. FIG.

  A cold air discharge port 9 is formed at the upper edge of the front opening of the display chamber 7, and a cold air suction port 11 is formed at the lower edge, and these communicate with the cold air duct 6. In addition, a blower 12 is disposed in the cool air duct 6 below the deck pan 4, and a cooler 13 constituting a refrigerant circuit of the cooling device is vertically installed in the cool air duct 6 behind the display chamber 7. Yes. When the blower 12 is operated, the cool air exchanged with the cooler 13 is blown up from the bottom in the cool air duct 6 at the rear of the display chamber 7 and enters the display chamber 7 from the cool air discharge port 9 at the upper edge of the opening. Discharged. Then, after the inside of the display chamber 7 is cooled while forming a cold air curtain in the front opening of the display chamber 7, the air is sucked into the blower 12 in the cold air duct 6 from the cold air inlet 11.

  On the other hand, a machine room 14 is formed below the heat insulating wall 2, and a compressor 16, a condenser 17, and a condenser blower 18 constituting a refrigerant circuit of a cooling device are installed in the machine room 14. In FIG. 2, 19 is a night cover and 21 is a fluorescent lamp.

  On the other hand, shelves 24 for displaying products are installed in a plurality of stages (three stages in the embodiment) in the display chamber 7. Each of the shelves 24 can be pulled out in the front-rear direction (the state pulled out in FIG. 2 is indicated by a broken line), and a shelf duct 26 is formed on the lower surface of the uppermost shelf 24 and the central shelf 24, respectively. ing. The front end of the shelf duct 26 is opened obliquely downward at a shelf lower cool air discharge port 27 located at the front opening of the display chamber 7, and the rear end is opened to the rear side of the partition plate 3. Further, an electric heater (not shown) is attached to each shelf 24. 2 is a transparent guard erected on the front end of the uppermost shelf 24.

  In this case, the lower end of the cooler 13 is located below the deck pan 4, and the upper end extends above the central shelf 24 (and the shelf duct 26). Further, the front surface of the cooler 13 is spaced from the partition plate 3, and the front surface of the cooler 13 is closed by a closing plate 28. A communication path 29 is formed between the closing plate 28 and the partition plate 3. The rear end of the shelf duct 26 of the central shelf 24 is opened to the rear side of the partition plate 3 in front of the closing plate 28, whereby the communication path 29 is formed in the cold air duct 6 above the cooler 13 and in the central shelf 24. The shelf duct 26 is communicated.

  A damper device 31, a position above the uppermost shelf 24, and a cooler duct 6 at a position above the upper end of the cooler 13 and above the uppermost shelf 24 by the shelf duct 26 of the uppermost shelf 24, 31 is provided. The structure and operation of the damper device 31 will be described in detail with reference to FIGS. 3 and 4 are enlarged sectional views of the showcase 1 in the damper device 31 portion, FIG. 5 is an enlarged perspective view of the damper device 31 portion, and FIG. 6 is an exploded perspective view thereof.

  The damper device 31 includes a receiving member 32, a damper 33, a link mechanism 34, a knob 36, and the like. In this case, the receiving member 32 has an area that closes the cool air passage of the cool air duct 6 behind the display chamber 7 and is attached to the cool air duct 6, from the front low level portion 32A and the rear high level portion 32B. It has a staircase shape. A plurality of through holes 37 for circulating cold air are formed in the rear portion of the high-order portion 32B of the receiving member 32 over the entire width of the cold air duct 6. Further, at the left and right ends of the receiving member 32, claws 32C (which also constitute a restricting means) are formed by cutting and raising above the high position portion 32B with a predetermined interval.

  The damper 33 is a plate member having a width dimension over substantially the entire width of the receiving member 32 and a front-rear dimension of approximately half of the receiving member 32, and is disposed on the receiving member 32 so as to be movable back and forth to open and close the through holes 37. To do. In this case, a vertical wall 33 </ b> A is formed upright at the left and right ends of the damper 33, and the vertical wall 33 </ b> A is positioned below the claw 32 </ b> C of the receiving member 32. Thus, the damper 33 is prevented from being detached from the receiving member 32 while the showcase 1 is being transported. In addition, projecting sides 33 </ b> B (constituting regulating means) that project forward are formed at the left and right ends of the damper 33. Further, the front edge of the damper 33 between the projecting sides 33B and 33B is folded upward in a U-shape, and a screw 39 having a collar portion is attached to a substantially central portion of the folded upper surface.

  The link mechanism 34 has a generally U-shaped cross-section with a wide upper surface (a U-shape facing rearward), and a resin material 41 is attached to the front and lower surfaces of the link mechanism 34. On the upper surface of the link mechanism 34, a continuous groove 34A is formed with a right end at the back and a front end at the left end, and the screw 39 is inserted from above so as to be movably engaged in the groove 34A. And is screwed into the damper 33. Further, a collar 42 is provided at the front center of the link mechanism 34 so as to face forward, and a screw 43 is attached so as to project forward from the rear surface through the collar 42.

  On the other hand, grooves 44, 44 are formed in the partition plate 3 at positions corresponding to the damper devices 31, 31. The groove 44 is formed on the left and right sides, and the left and right ends thereof are lowered to serve as holding portions 44A and 44B (holding means). The collar 42 is movably inserted into the groove 44, and the knob 36 is screwed into a screw 43 protruding from the collar 42 and faces the back of the display chamber 7 on the front side of the partition plate 3.

(1) Full cooling use state for cooling the whole When the entire display chamber 7 is used for cooling in the above configuration, the knob 36 of the upper and lower damper devices 31 and 31 is moved to the right and the collar 42 is moved to the right end. Is lowered into the holding portion 44B (FIG. 3). FIG. 3 shows a state in which the collar 42 has fallen into the holding portion 44B. In this state, the resin material 41 is in contact with the upper surface of the lower portion 32A of the receiving member 32. The link mechanism is lifted while the collar 42 is in the groove 44 other than the holding portions 44A and 44B, and the resin material 41 floats above the lower portion 32A. Since the knob 36 moves to the right end, the link mechanism 34 moves to the right, so that the screw 39 moves to the left end of the groove 34A (FIGS. 3 and 5). Since the left end of the groove 34A is in front, the damper 33 moves forward and opens the through-holes 37 ... of the receiving member 32.

  At this time, since the projecting sides 33B and 33B of the damper 33 are in contact with the partition plate 3, even if the damper 33 is inclined during the movement, it becomes parallel to the partition plate 3 in a state of moving forward. Accordingly, all the through holes 37 are completely opened. Further, since the collar 42 has fallen into the holding portion 44B, the movement to the left and right is restricted. Accordingly, the damper 33 is not inadvertently moved to the left and right in this state (a state in which the through hole 37 is opened).

  When the compressor 16 is operated in a state where the through holes 37 are opened by the dampers 33 of the upper and lower damper devices 31 and 31 as described above, the cooler 13 exhibits a cooling action. When the blower 2 is operated, the cool air exchanged with the cooler 13 as described above is blown up from the bottom in the cool air duct 6 at the rear of the display chamber 7 and discharged from the cool air discharge port 9 to the display chamber 7. Then, the air is sucked from the cold air inlet 11. Thereby, the entire display chamber 7 is cooled to a predetermined temperature. In this case, the electric heater of each shelf 24 is not energized.

(2) Warm / cool use state in which the upper part is heated from the central shelf and the lower part is cooled Next, the inside of the display chamber 7 above the central shelf 24 is heated, and the lower display room 7, that is, When the inside of the display chamber 7 on the bottom shelf 24 is cooled, the knob 36 of the lower damper device 31 is moved to the left from the state (1), and the collar 42 is moved to the left end holding portion 44A. Depress (Fig. 4). Similarly, FIG. 4 shows a state in which the collar 42 has fallen into the holding portion 44A. In this state, the resin material 41 is in contact with the upper surface of the lower portion 32A of the receiving member 32, but while the knob 36 is moving. That is, while the collar 42 is in the groove 44 other than the holding portions 44A and 44B, the link mechanism is lifted, and the resin material 41 floats above the lower portion 32A. As the knob 36 moves to the left end, the link mechanism 34 moves to the left, so that the screw 39 moves to the right end of the groove 34A (FIG. 4). Since the right end of the groove 34A is in the back, the damper 33 moves rearward and closes the through holes 37 ... of the receiving member 32.

  At this time, the rear edge of the damper 33 abuts on a flange 32D (constituting means) standing at the rear edge of the receiving member 32, so that even if the damper 33 is inclined during the movement, it moves backward. In this state, it becomes parallel to the receiving member 32. Accordingly, all the through holes 37 are completely closed. Further, since the collar 42 has fallen into the holding portion 44A, the movement to the left and right is restricted. Accordingly, the damper 33 does not inadvertently move left and right in this state (a state where the through hole 37 is closed).

  When the through holes 37 are closed by the dampers 33 of the lower damper device 31 in this way, the cool air duct 6 behind the display chamber 7 is placed below the uppermost shelf 24 (shelf duct 26) and the receiving member 32 and the damper 33. It is blocked by. As a result, the cool air that has risen by exchanging heat with the cooler 13 as described above collides with the receiving member 32 and the damper 33, moves forward, and flows into the communication passage 29. The cold air flowing into the communication passage 29 enters the shelf duct 26 of the central shelf 24, passes through the shelf duct 26, and is discharged into the lower display chamber 7 from the front shelf under-cooling air discharge port 27. The cool air discharged from the under-shelf cool air discharge port 27 cools the inside of the display chamber 7 on the lowest shelf 24 to a predetermined temperature, and is sucked from the cool air suction port 11 as described above.

  In this way, the communication passage 29 that connects the cold air duct 6 and the shelf duct 27 above the cooler 13 is formed, and the damper device 31 is provided above the cooler 13. When closed, the cool air can be introduced into the shelf duct 27 from the cool air duct 6 above the cooler 13 through the communication path 29. As a result, even when the upper end of the cooler 13 comes above the shelf duct 26 of the central shelf 24, cold air is introduced into the shelf duct 26 of the central shelf 24 without any trouble, and the display chamber 7 below the central shelf 24. It becomes possible to discharge into the inside.

  Further, the damper device 31 is provided in the cold air duct 6 and has an area for closing the cold air passage of the cold air duct 6, and a plurality of through holes 37 for cold air circulation are formed on the left and right sides. The member 32 and the damper 33 are provided, and the damper 33 is provided on the left and right sides. The damper 33 moves forward and backward to open and close the through holes 37. Therefore, the damper 33 opens the through holes 37. In this state, the cold air uniformly flows in the cold air duct 6 through the plurality of through holes 37 formed on the left and right. When the through holes 37 are closed by the damper 33, it is possible to effectively prevent cold air leakage from the through holes 37.

  Thus, the cool air duct 6 is reliably closed by the damper 33 when the cool air is discharged only below the central shelf 24 without deteriorating the cooling performance when the cold air is supplied to the central shelf 24 or more. It becomes possible to accurately manage the temperature in the display chamber 7 above and below the central shelf 24. In particular, there is a knob 36 facing the back of the display chamber 7 and a link mechanism 34 that moves the damper 33 in the front-rear direction in accordance with the movement of the knob 36 in the left-right direction. The operability during the process is significantly improved.

  Then, in the state in which the cool air is discharged from the under-shelf cold air discharge port 27 of the central shelf 24 in this way, the electric heaters in the uppermost shelf 24 and the central shelf 24 are energized to generate heat. As a result, the inside of the display chamber 7 above the central shelf 24 is heated to a predetermined temperature. If the electric heater does not generate heat, the inside of the display chamber 7 above the central shelf 24 is used at room temperature.

(3) Warm / cool use state in which the upper shelf is heated and the lower part is cooled Next, only the upper shelf 24 is heated, and the lower part, that is, the central shelf 24 and the lower shelf When the inside of the display chamber 7 on the shelf 24 is to be cooled, the knob 36 of the lower damper 31 is moved to the right from the state (2), and the collar 42 is dropped into the holding portion 44B at the right end to make the damper. 33 is moved forward to open the through holes 37 as described above (FIG. 3). On the other hand, the knob 36 of the upper damper device 31 is moved leftward, the collar 42 is dropped into the holding portion 44A at the left end, the damper 33 is moved rearward, and the through holes 37 are closed as described above. (FIG. 4).

  Thus, when only the upper damper device 31 is closed with the through holes 37... By the damper 33, the cool air duct 6 behind the display chamber 7 is placed above the uppermost shelf 24 (shelf duct 26) by the receiving member 32 and the damper 33. Blocked. As a result, the cold air that has risen by exchanging heat with the cooler 13 as described above passes through the lower damper device 31 and then collides with the receiving member 32 and the damper 33 of the upper damper device 31 to move forward. Then, it enters into the shelf duct 26 of the uppermost shelf 24, passes through the shelf duct 26, and is discharged into the lower display chamber 7 from the front shelf bottom cold air discharge port 27. The cool air discharged from the under-shelf cool air discharge port 27 cools the inside of the display chamber 7 on the central shelf 24 and the lowermost shelf 24 to a predetermined temperature, and is sucked from the cool air suction port 11 as described above.

  Incidentally, a part of the cold air hitting the receiving member 32 of the lower damper device 31 passes through the communication path 29 toward the front and enters the shelf duct 26 of the central shelf 24 to enter the lower shelf cold air discharge port 27 of the central shelf 24 as described above. Therefore, the inside of the display chamber 7 below the uppermost shelf 24 is more uniformly cooled.

  And in this state which discharges cold air from the under shelf cold air discharge port 27 of the uppermost shelf 24, the electric heater of the uppermost shelf 24 is energized to generate heat. As a result, the inside of the display chamber 7 on the uppermost shelf 24 is heated to a predetermined temperature. If the electric heater does not generate heat, the inside of the display chamber 7 on the uppermost shelf 24 is used at room temperature.

(4) All-warming use state in which the whole is heated When the entire display chamber 7 is heated and used, the compressor 16 and the blower 12 of the cooling device are stopped, and the shelf 24. Energize the electric heater to generate heat. As a result, the entire display chamber 7 is heated to a predetermined temperature.

  In addition, although the Example demonstrated the showcase 1 provided with the three-stage shelf 24, the number of stages of a shelf is not restricted to it.

It is a front view of a showcase to which the present invention is applied. It is a vertical side view of the showcase of FIG. FIG. 2 is an enlarged cross-sectional view of a damper device portion under the showcase of FIG. 1 (a state where a through hole is opened by a damper). FIG. 2 is an enlarged cross-sectional view of a damper device portion under the showcase of FIG. 1 (a state where a through hole is closed by a damper). It is an expansion perspective view of the damper device part of the showcase of FIG. FIG. 6 is an exploded perspective view of the damper device of FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Showcase 2 Heat insulation wall 3 Partition plate 4 Deck pan 6 Cold air duct 7 Display room 9 Cold air outlet 11 Cold air inlet 12 Blower 13 Cooler 24 Shelf 26 Shelf duct 27 Shelf lower air outlet 29 Communication path 31 Damper device 32 Receiving member 32C Claw 33 Damper 33B Protruding side 34 Link mechanism 36 Knob 37 Through hole 42 Color 44 Groove 44A, 44B Holding part

Claims (6)

A shelf for displaying merchandise is installed in a display chamber that opens to the front, a shelf duct is formed in the shelf, and cool air rising in a cold air duct formed at the rear of the display chamber is introduced into the shelf duct. In the showcase that can be discharged into the display room below the shelf,
A cooler disposed in the cold air duct and having an upper end located above the shelf duct;
A communication path communicating the cold air duct and the shelf duct above the cooler;
A showcase provided with a damper provided above the cooler for opening and closing the cold air duct.   The showcase according to claim 1, wherein an electric heater is provided on the shelf. Provided in the cold air duct above the cooler, having an area for closing the cold air passage of the cold air duct, and having a receiving member in which a plurality of through holes for cold air flow are formed on the left and right,
The showcase according to claim 1 or 2, wherein the damper is provided on the left and right sides and moves back and forth to open and close the through holes.   4. The showcase according to claim 3, further comprising a knob facing the back surface of the display room, and a link mechanism that moves the damper in the front-rear direction as the knob moves in the left-right direction.   The showcase according to claim 3 or 4, further comprising holding means for holding the damper moved to the front side and the state moved to the rear side.   The showcase according to claim 3, 4 or 5, further comprising a restricting means for restricting a posture of the damper in a state where the damper is moved to the front side and a state where the damper is moved to the rear side.

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