JP2014151113A - Refrigerated showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To have an upper showroom and a lower showroom in a showcase body vertically partitioned into two, refrigerate the respective showcases at a same temperature, or refrigerate the respective showcases at different temperatures.SOLUTION: A closed type refrigerated showcase 1 having an openable/closable door 5 at an opening part 4 of a showcase body 2 comprises a partition body 8 that partitions the interior of the showcase body 2 into a lower showroom 6 and an upper showroom 7. The partition body 8 includes: a vertical communication hole 28 for communicating the lower showroom 6 to the upper showroom 7; a first divider body 24 that can move to an open position for opening the vertical communication hole 28 and a closure position for closing the vertical communication hole 28; and a second divider body 25 capable of moving to a first position that closes a lower communication hole 21 and an upper communication hole 22 communicated to a duct 14, and opens the duct 14, and a second position that opens the lower communication hole 21 and the upper communication hole 22 and closes the interior of the duct 14, between the lower communication hole 21 and the upper communication hole 22, into a lower-side part and an upper-side part.

Description

  The present invention relates to a closed type refrigerated showcase having a showcase body having an opening formed on the front surface and an openable / closable door attached to the opening.

  Conventionally, in supermarkets and other stores that sell products, it is possible to open and close the open type showcase that always opens the opening formed on the front surface of the showcase body and the opening formed on the front surface of the showcase body A closed type showcase with a door attached is used.

  As a showcase installed in a store, an open type showcase is widely used. On the other hand, as a showcase used in a place where outside air is easily blown, such as a street or a station Naka, a closed type showcase is used to facilitate maintaining the internal temperature of the showcase body at a set temperature (for example, See Patent Documents 1 and 2 below).

  The showcase described in Patent Literature 1 is entirely controlled at the same temperature in a display room provided in the showcase body and displaying merchandise.

  In the showcase described in Patent Document 2, a display chamber in which products in the showcase body are displayed is divided into two regions, one of which is a region for displaying refrigerated products, and the other is a product for heating. It is considered as a display area. Air that has been cooled by a cooler is blown to a region where products to be refrigerated are displayed, and a region where products to be heated are displayed is heated by a heater.

JP 2011-152186 A JP-A-5-141857

  However, in a conventional closed type refrigerated showcase, the inside of the showcase body is divided into two upper and lower display rooms, and each display room is refrigerated at different temperatures (for example, 5 ° C. and 20 °), or necessary. Accordingly, there is no known refrigerated showcase in which the two display rooms are refrigerated at the same temperature (for example, 5 ° C. or 20 ° C.).

  The present invention has been made to solve such a problem, and an object of the present invention is to provide an upper display room and a lower display room, which are divided into two parts in the upper and lower parts in a show showcase main body and products are displayed. It is intended to provide a refrigerated showcase that can be refrigerated at the same temperature in each display room or refrigerated at different temperatures.

A refrigerated showcase according to the present invention is a closed type refrigerated showcase having a showcase body having an opening formed on the front surface and an openable / closable door attached to the opening. A partition body that divides the inside of the showcase body into a lower display chamber and an upper display chamber, and a lower opening that is provided in the showcase body and that opens at the bottom of the lower display chamber at one end. A duct having an upper opening that opens to the upper part of the upper display chamber at the other end; a cooler that is installed in the duct below the compartment and that cools the air in the duct; and the duct A lower blower fan that is installed in the lower part of the compartment and sucks the air in the lower display chamber from the lower opening into the duct, and the compartment in the duct. An upper blower fan that is installed on the upper side and blows out air in the duct from the upper opening to the upper display chamber, and a lower portion that is provided in the middle of the duct and communicates the duct and the lower display chamber A communication port; and an upper communication port that is provided in the middle of the duct and communicates the duct and the upper display chamber. The partition communicates the lower display chamber and the upper display chamber. Closes the upper and lower communication ports, the first partition that can be moved to an open position that opens the upper and lower communication ports, and a closed position that closes the upper and lower communication ports, the lower communication port, and the upper communication port. The first position where the duct is opened, the lower communication port and the upper communication port are opened, and the interior of the duct is closed to the lower portion and the upper portion between the lower communication port and the upper communication port. In the second position And the dynamic possible second partition member, and having a.

  Further, in the refrigerated showcase according to the present invention described above, the first partition and the second partition are connected so as to be movable together, and the first partition is located at the open position. When the second partition is located at the first position and the first partition is located at the closed position, the second partition is preferably located at the second position.

  In the refrigerated showcase according to the present invention described above, it is desirable to have a heater provided at the upper part of the upper display chamber and for heating the air blown into the upper display chamber.

  In the refrigerated showcase according to the present invention described above, a dew-proof heater for heating the upper front corner portion in the lower display chamber, the first partition is located at the open position, and the second partition It is desirable to have a switch for energizing the dew proof heater when is located at the first position.

  In the refrigerated showcase according to the present invention described above, it is preferable that a punching hole is formed in the second partition.

  Further, in the refrigerated showcase according to the present invention described above, a position detection unit that detects positions of the first partition and the second partition, and the lower display chamber according to a detection result of the position detection unit It is desirable to have a set temperature switching unit that switches a set temperature for refrigeration control of the upper display chamber.

According to the refrigerated showcase according to the present invention, the first partition is moved to the open position where the upper and lower communication ports are opened, the lower communication port and the upper communication port are closed, and the duct is opened to the second position. The partition is moved and the lower blower fan is driven. As a result, the air in the lower display chamber is sucked into the duct from the lower opening, the air sucked into the duct is cooled by the cooler, and the cooled air is blown out from the upper opening into the upper display chamber and into the upper display chamber. The blown-out air flows into the lower display chamber through the upper and lower communication ports, and is again sucked into the duct from the lower opening. In this way, the air cooled by the cooler circulates between the duct, the upper display chamber, and the lower display chamber, so that the upper display chamber and the lower display chamber can be refrigerated at the same temperature. . On the other hand, the first partition is moved to the closing position for closing the upper and lower communication ports, and the lower communication port and the upper communication port are opened, and the lower portion of the duct is formed between the lower communication port and the upper communication port. The second partition is moved to the second position where it closes to the upper portion and the lower blower fan and the upper blower fan are driven. As a result, the air in the lower display chamber is sucked into the duct from the lower opening by the driving of the lower blower fan, and the air sucked into the duct is cooled by the cooler and flows through the lower part in the duct. It flows into the lower display chamber from the communication port and is sucked into the duct again from the lower opening. In this manner, the air cooled by the cooler circulates between the lower display chamber and the lower portion of the duct, whereby the lower display chamber can be controlled to be refrigerated. In addition, the air in the upper display chamber is sucked into the duct from the upper communication port by driving the upper blower fan, and this air is blown into the upper display chamber from the upper opening of the duct, and the air blown into the upper display chamber is again the upper communication port. Is sucked into the duct. In this manner, the air in the upper display chamber is circulated between the upper display chamber and the upper portion in the duct, so that the upper display chamber can be refrigerated. In this case, the air in the upper display room is cooled by heat conduction from the lower display room, but since the air cooled by the cooler is not supplied into the upper display room, the refrigeration temperature in the upper display room is set in the lower cooling room. It becomes higher than the refrigeration temperature, and the lower display chamber and the upper display chamber can be refrigerated at different temperatures.

  In addition, the first partition and the second partition are connected and can be moved integrally, and when the first partition is located at the open position, the second partition is located at the first position, and the first partition Since the second partition is located at the second position when the body is located at the closed position, the first partition is moved to the open position and the second partition is moved to the first position, or the first The operation of moving the partition body to the closed position and moving the second partition body to the second position can be easily performed by one operation.

  Also, air provided between the upper display chamber and the upper portion of the duct by driving the upper blower fan is provided at the upper portion of the upper display chamber and has a heater for heating the air blown into the upper display chamber. The refrigeration temperature in the upper display chamber can be adjusted. Furthermore, when both the upper display chamber and the lower display chamber are switched from a low temperature refrigeration state to a higher temperature refrigeration state, they can be quickly switched by heating with a heater.

  In addition, the dew-proof heater that heats the upper front side corner portion in the lower display room and the dew-proof heater are energized when the first partition is located at the open position and the second partition is located at the first position. When the lower display room is refrigerated at a lower temperature than the upper display room, it is difficult for cold air to flow into the upper front corner of the lower display room and condensation easily occurs. By energizing and heating the upper front corner portion, it is possible to prevent the occurrence of condensation at the upper front corner portion in the lower display chamber.

  Further, when the punching hole is formed in the second partition, the duct is partitioned by moving the second partition to the second position, and when the refrigeration control is performed at different temperatures in the lower display chamber and the upper display chamber, A part of the air cooled by the cooler can be supplied to the upper display room through the punching holes. When the temperature of the upper display room rises by opening the door, the refrigeration temperature in the upper display room is aimed. It is possible to quickly return to the temperature to be performed, and to easily keep the temperature in the upper display chamber constant.

  Moreover, the position detection part which detects the position of a 1st partition and a 2nd partition, and the setting temperature switching which switches the setting temperature which controls refrigeration between a lower display room and an upper display room according to the detection result of a position detection part And the set temperature for refrigeration control between the upper display chamber and the lower display chamber can be automatically switched by moving the first partition and the second partition. Can be done without any hassle.

It is a cross-sectional side view which shows the refrigerated showcase of the 1st Embodiment of this invention. It is a disassembled perspective view which shows a division body. It is a cross-sectional side view which shows the state which moved the 1st partition and the 2nd partition to the position which cools and controls the lower display room and the upper display room at the same temperature. It is a sectional side view showing the state where the 1st partition and the 2nd partition were moved to the position where refrigeration control is carried out at different temperature in the lower display room and the upper display room. It is a block diagram which shows the part which performs refrigeration control with a lower display chamber and an upper display chamber. It is a perspective view which shows a part of division body of the 2nd Embodiment of this invention.

(First embodiment)
A refrigerated showcase according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the refrigerated showcase 1 includes a showcase body 2 formed by a heat insulating wall and a machine room 3 installed on the lower side of the showcase body 2. The heat insulating wall is formed by sandwiching a heat insulating material such as urethane foam between metal plates.

  An opening 4 is formed on the front surface of the showcase body 2, and a sliding glass door 5 is attached to the opening 4 so as to be opened and closed. The door 5 is provided in two upper and lower stages, and the upper door 5 is opened and closed when taking out a product in the upper display chamber described later, and the lower door 5 is opened and closed when taking out a product in the lower display chamber described later.

  Inside the showcase body 2, a partition body 8 is provided that divides the inside of the showcase body 2 into two regions, a lower display chamber 6 and an upper display chamber 7. In the lower display chamber 6 and the upper display chamber 7, a display shelf 9 and a floor board 10 on which products are displayed are respectively provided. A temperature sensor 11 for measuring the temperature in the lower display chamber 6 is provided in the upper part of the lower display chamber 6, and a temperature sensor 12 for measuring the temperature in the upper display chamber 7 is provided in the upper part of the upper display chamber 7. It has been.

  In addition, a back plate 13 is provided inside the showcase body 2 so as to face the inner peripheral surface of the showcase main body 2, and a duct 14 is provided between the back plate 13 and the inner peripheral surface of the showcase main body 2. Is formed. A lower opening 15 that opens to the bottom of the lower display chamber 6 is formed at one end of the duct 14, and an upper opening 16 that opens to the upper portion of the upper display chamber 7 is formed at the other end of the duct 14.

  In the duct 14, a cooler 17 that is located below the partition body 8 and cools the air in the duct 14 is installed. The cooler 17 is connected to a compressor (not shown) and a condenser (not shown) that constitute a refrigeration apparatus together with the cooler 17. These compressors and condensers are located in the machine room 3. Is installed.

  Further, a lower blower fan 18 and an upper blower fan 19 are installed in the duct 14. The lower blower fan 18 is installed below the partition body 8 and is driven to suck air in the lower display chamber 6 from the lower opening 15 into the duct 14. The upper blower fan 19 is installed on the upper side of the partition body 8 and is driven to blow out air in the duct 14 from the upper opening 16 into the upper display chamber 7.

  Further, a heater 20 is provided in the vicinity of the upper opening 16 in the duct 14. The heater 20 generates heat when energized, and air blown into the upper display chamber 7 from the upper opening 16 is heated.

  A lower communication port 21 that communicates the duct 14 and the lower display chamber 6 and an upper communication port 22 that communicates the duct 14 and the upper display chamber 7 are formed at positions near the partition body 8 in the duct 14. . The lower communication port 21 and the upper communication port 22 are opened and closed by operating a second partition, which will be described later, constituting the partition body 8.

The structure of the division body 8 mentioned above is demonstrated based on FIG. 1 and FIG. The partition body 8 includes a communication port forming body 23, a first partition body 24, a second partition body 25, and intermediate blowing duct forming plates 26 and 27.

  The communication port forming body 23 is positioned on the opening 4 side, is fixed to the showcase body 2, and is formed in a long shape extending in the lateral width direction of the showcase body 2. In the communication port forming body 23, a plurality of upper and lower communication ports 28 for communicating the lower display chamber 6 and the upper display chamber 7 are formed along the lateral width direction of the showcase body 2. A heat insulating material 29 such as urethane foam is attached to the lower surface of the communication port forming body 23.

  The first partition 24 is disposed below the communication port forming body 23, is formed in a long shape extending in the lateral width direction of the showcase body 2, and is provided so as to be movable in the front-rear direction of the showcase body 2. ing. A plurality of openings 30 are formed in the first partition 24 along the lateral width direction of the showcase body 2. The first partition 24 is moved forward, and the first partition 24 is positioned at an open position where the opening 30 faces the vertical communication port 28 in the vertical direction, whereby the vertical communication port 28 is opened. Moreover, the 1st partition 24 is moved back and the 1st partition 24 is located in the closed position where the part in which the opening 30 in the 1st partition 24 is not formed opposes the up-and-down communication port 28 in an up-down direction. As a result, the upper and lower communication ports 28 are closed. A heat insulating material 31 is attached to the lower surface of the second partition body 24.

  The second partition 25 has a T-shaped cross section having a horizontal portion 25a and a vertical portion 25b and is formed in a long shape extending in the lateral width direction of the showcase body 2, and the front-rear direction of the showcase body 2 It is provided to be movable. By moving the second partition 25 forward and positioning it at the first position, the lower communication port 21 and the upper communication port 22 are closed by the vertical portion 25b, and the horizontal portion 25a is moved out of the duct 14. By doing so, the duct 14 is opened. Further, by moving the second partition rearward to be positioned at the second position, the lower communication port 21 and the upper communication port 22 are opened, and the horizontal portion 25a is moved into the duct 14 to thereby form the duct. 14 is closed. A heat insulating material 32 is attached to the lower surface of the horizontal portion 25a.

  The 1st partition 24 and the 2nd partition 25 are connected by a pair of connecting member 33, and are provided so that movement is possible integrally. When the first partition 24 is positioned at the open position, the second partition 25 is positioned at the first position, and when the first partition 24 is positioned at the closed position, the second partition 25 is positioned at the second position. Located in. The connecting member 33 is provided with an operation lever 34 that is gripped when the first and second partitions 24, 25 are moved in the front-rear direction. When the first and second partitions 24 and 25 are moved in the front-rear direction, the first and second partitions 24 and 25 are attracted by magnets (not shown) at the respective stop positions in the front-rear direction and are held at the stop positions. The

  The intermediate blowing duct forming plates 26 and 27 are provided facing each other in the vertical direction, and are fixed to the showcase body 2 via a bracket (not shown). An intermediate blowing duct 35 is formed between the intermediate blowing duct forming plates 26, 27. One end of the intermediate blowing duct 35 communicates with the lower communication port 21 and the other end is a showcase on the upper side in the lower display chamber 6. Opened to the front side of the main body 2. A heat insulating material 36 is attached to the lower surface of the upper intermediate blowing duct forming plate 26. The intermediate blowout duct forming plates 26 and 27 are formed with slits 37 and 38 through which the operation lever 34 passes.

A dew proof heater 39 is provided at the communication port forming body 23 and the front end side of the intermediate blowing duct forming plate 26, and these dew proof heaters 39 generate heat when energized. A proximity switch 40 that is a switch is provided on a portion of the inner peripheral surface of the showcase body 2 that faces the vertical portion 25b of the second partition 25. The proximity switch 40 is turned on when the second partition 25 is moved to the second position and is close to the proximity switch 40, and is moved away from the proximity switch 40 when the second partition 25 is moved to the first position. Turned off. When the proximity switch 40 is turned on, power is supplied to the dew proof heater 39, and when the proximity switch 40 is turned off, power supply to the dew proof heater 39 is stopped. This dew-proof heater 39 is a lower display chamber which is an area where condensation easily occurs as will be described later when the inside of the lower display chamber 6 is controlled to be refrigerated to 5 ° C. Heat the upper front corner in 6 to prevent condensation.

  In FIG. 3, by operating the operation lever 34, the first and second partition bodies 24, 25 move forward, the first partition body 24 is located in the open position, and the second partition body 25 is brought into the first position. The position is shown. In this case, the upper and lower communication ports 28 are opened when the upper and lower communication ports 28 and the opening 30 of the first partition 25 oppose each other in the vertical direction, and the lower communication port 21 and the upper communication port 22 are connected to the second partition 25. The duct 14 is opened by being closed by the vertical portion 25 b and the horizontal portion 25 a of the second partition 25 positioned outside the duct 14.

  In FIG. 4, by operating the operation lever 34, the first and second partition bodies 24 and 25 move rearward, the first partition body 24 is located at the closed position, and the second partition body 25 is brought to the second position. The position is shown. In this case, the upper and lower communication ports 28 are closed and the lower communication port 21 and the upper communication port 22 are opened because the upper and lower communication ports 28 and the portion of the first partition 24 where the opening 30 is not formed face each other in the vertical direction. Then, the horizontal portion 25a of the second partition 25 is located in the duct 14, whereby the duct 14 is closed by the horizontal portion 25a. Further, the vertical portion 25b of the second partition 25 is close to the proximity switch 40, the proximity switch 40 is turned on, and the dew proof heater 39 is energized.

  FIG. 5 is a block diagram showing a part that performs refrigeration control in the lower display chamber 6 and the upper display chamber 7. The refrigerated showcase 1 is provided with a control unit 41 for controlling the temperatures in the lower display chamber 6 and the upper display chamber 7, and the control unit 41 includes first and second partitions 24, 25. A proximity switch 40 that is a position detection unit that detects a position, a heater 20, a dew proof heater 39, a lower blower fan 18, an upper blower fan 19, and temperature sensors 11 and 12 are connected. The control unit 41 includes a storage unit 42 that stores a set temperature for refrigeration control in the lower display chamber 6 and the upper display chamber 7, and the lower display chamber 6 and the upper display according to the detection result of the proximity switch 40. A set temperature switching unit 43 that switches the set temperature for refrigeration control with the inside of the chamber 7 is provided. For example, when the proximity switch 40 is turned off, the set temperature switching unit 43 switches the set temperature in the lower display chamber 6 and the upper display chamber 7 to 5 ° C. (or 20 ° C.). When is turned on, the set temperature in the lower display chamber 6 is switched to 5 ° C., and the set temperature in the upper display chamber 7 is switched to 20 ° C.

  In such a configuration, in the refrigerated showcase 1, when the same product is displayed in the lower display chamber 6 and the upper display chamber 7, the lower display chamber 6 and the upper display chamber 7 are refrigerated at the same temperature. Can be controlled. The temperature at this time can be changed in accordance with the products to be displayed. For example, in the case of displaying vegetables in the lower display chamber 6 and the upper display chamber 7, the lower display chamber 6 and the upper display chamber When the inside of the display 7 is controlled to be refrigerated at a low temperature of 5 ° C. and a lunch box or the like is displayed in the lower display chamber 6 and the upper display chamber 7, the lower display chamber 6 and the upper display chamber 7 are Both can be refrigerated at a high temperature of 20 ° C.

  On the other hand, when different products are displayed in the lower display chamber 6 and the upper display chamber 7, the lower display chamber 6 and the upper display chamber 7 are controlled to be refrigerated at different temperatures according to the products to be displayed. Can do. For example, when a side dish is displayed in the lower display room 6 and a lunch box is displayed in the upper display room 7, the inside of the upper display room 7 is controlled to be refrigerated at a temperature as low as 5 ° C. Can be refrigerated to a high temperature of 20 ° C.

  First, a case will be described in which prepared food is displayed in the lower display chamber 6 and the upper display chamber 7, and both the lower display chamber 6 and the upper display chamber 7 are controlled to be refrigerated at a low temperature (5 ° C.).

  In this case, the operation lever 34 is operated to move the first and second partitions 24 and 25 to the front positions shown in FIGS. By this moving operation, the first partition 24 is moved to the open position, and the opening 30 of the first partition 24 and the upper and lower communication ports 28 of the communication port forming body 23 face each other in the vertical direction. The lower display chamber 6 and the upper display chamber 7 are communicated with each other via the upper and lower communication ports 28. Further, the second partition 25 is moved to the first position, the lower communication port 21 and the upper communication port 22 are closed by the vertical portion 25b of the second partition 25, and the horizontal portion 25a of the second partition 25 is ducted. By moving to a position outside 14, the duct 14 is opened. At this time, when the vertical portion 25b is separated from the proximity switch 40, the proximity switch 40 is turned off, and the positions of the first and second partition bodies 24 and 25 are detected by the proximity switch 40. Based on the detection result, the control unit In the set temperature switching unit 43 of 41, the set temperature for refrigeration control in the lower display chamber 6 and the upper display chamber 7 is switched to 5 ° C.

  When the start switch (not shown) for operating the refrigerated showcase 1 is turned on from this state, the cooler 17 and the lower blower fan 18 are driven.

  By driving the lower blower fan 18, the air in the lower display chamber 6 is sucked into the duct 14 from the lower opening 15, and the air sucked into the duct 14 is cooled by the cooler 17 and is cooled. (Cold air) flows through the duct 14 and blows out from the upper opening 16 of the duct 14 into the upper display chamber 7. The cool air blown into the upper display chamber 7 from the upper opening 16 cools the upper display chamber 7, further flows into the lower display chamber 6 through the upper and lower communication ports 28, and cools the lower display chamber 6. .

  The cold air that has flowed into the lower display chamber 6 and cooled in the lower display chamber 6 is again sucked into the duct 14 from the lower opening 15 by the driving of the lower blower fan 18 and cooled again by the cooler 17. In this way, the cool air circulates in the duct 14, the upper display chamber 7, and the lower display chamber 6, whereby the lower display chamber 6 and the upper display chamber 7 have the same temperature (5 ° C.). Refrigerated controlled.

  The temperatures in the lower display chamber 6 and the upper display chamber 7 are detected by the temperature sensors 11 and 12, and the temperatures in the lower display chamber 6 and the upper display chamber 7 are lower than the set temperature (5 ° C.) for refrigeration control. In this case, a signal for stopping the operation of the refrigeration apparatus including the cooler 17 is output from a control signal output unit (not shown) of the control unit 41, and the drive of the cooler 17 is stopped. When the driving of the cooler 17 is stopped, the temperatures in the lower display chamber 6 and the upper display chamber 7 gradually increase, and when the temperature rises to a certain temperature, the driving of the cooler 17 is resumed.

  Next, a description will be given of a case where a lunch box or the like is displayed in the lower display chamber 6 and the upper display chamber 7, and the lower display chamber 6 and the upper display chamber 7 are refrigerated at a high temperature (20 ° C.).

In this case, the basic operation and operation are the same as those in the case where both the lower display chamber 6 and the upper display chamber 7 are refrigerated and controlled at 5 ° C., and the first and second partitions 24 and 25 are positioned at the front positions. The upper and lower communication ports 28 are opened to allow the lower display chamber 6 and the upper display chamber 7 to communicate with each other. Further, the lower communication port 21 and the upper communication port 22 are closed by the vertical portion 25b, and the horizontal portion 25a is moved out of the duct 14 to open the duct 14. At this time, when the vertical portion 25b is separated from the proximity switch 40, the proximity switch 40 is turned off, and the positions of the first and second partition bodies 24 and 25 are detected by the proximity switch 40. Based on the detection result, the control unit In the set temperature switching unit 43 of 41, the set temperature for refrigeration control in the lower display chamber 6 and the upper display chamber 7 is switched to 20 ° C. When the proximity switch 40 is turned off, the set temperature for refrigeration control is 5 ° C. or 20
Whether or not the temperature reaches 0 ° C. is determined by switching a dip switch (not shown) provided in the control unit 41.

  Further, since the temperature for refrigeration control is as high as 20 ° C., the heater 20 is driven and the cold air blown into the upper display chamber 7 from the upper opening 16 of the duct 14 is heated.

  In this manner, the cool air cooled by the cooler 17 and heated by the heater 20 circulates in the duct 14, the upper display chamber 7, and the lower display chamber 6, thereby the lower display chamber 6. The inside and the inside of the upper display chamber 7 are controlled to be refrigerated at the same temperature (20 ° C.).

  The temperature in the lower display chamber 6 and the upper display chamber 7 is detected by the temperature sensors 11 and 12, and the temperature in the lower display chamber 6 and the upper display chamber 7 is higher than the set temperature (20 ° C.) controlled. In the case, the driving of the heater 20 is stopped.

  Next, side dishes etc. are displayed in the lower display room 6, lunch boxes and the like are displayed in the upper display room 7, the inside of the lower display room 6 is controlled to be refrigerated to 5 ° C, and the inside of the upper display room 7 is refrigerated to 20 ° C. The case of controlling will be described.

  In this case, the operation lever 34 is operated to move the first and second partitions 24 and 25 to the rear positions shown in FIG. By this moving operation, the first partition 24 is moved to the closing position, the portion of the first partition 24 where the opening 30 is not formed faces the upper and lower communication ports 28 in the vertical direction, and the upper and lower communication ports 28 are closed. Thus, the communication state between the lower display chamber 6 and the upper display chamber 7 is blocked. Further, the second partition 25 is moved to the second position, the lower communication port 21 and the upper communication port 22 are opened, and the horizontal portion 25a of the second partition 25 is moved to a position in the duct 14, thereby the duct. 14 is closed to the lower part and the upper part. At this time, the proximity switch 40 is turned on when the vertical portion 25b approaches the proximity switch 40, and the set temperature switching unit 43 of the control unit 41 switches the set temperature for refrigeration control in the lower display chamber 6 to 5 ° C. The set temperature for refrigeration control in the upper display chamber 7 is switched to 20 ° C.

  When the start switch for operating the refrigerated showcase 1 is turned on from this state, the cooler 17, the lower blower fan 18, the upper blower fan 19, the heater 20, and the dew proof heater 39 are driven.

  On the side of the lower display chamber 6, the air in the lower display chamber 6 is sucked into the duct 14 from the lower opening 15 by driving the lower blower fan 18, and the air sucked into the duct 14 is cooled by the cooler 17. Then, the cooled air (cold air) flows through the lower portion in the duct 14 closed by the horizontal portion 25a. The cold air that has flowed through the lower portion of the duct 14 flows into the intermediate blowing duct 35 from the lower communication port 21, flows through the intermediate blowing duct 35, and blows out to the front side in the lower display chamber 6. The cold air that has flowed through the intermediate blowout duct 35 and blown to the front side of the lower display chamber 6 cools the lower display chamber 6, and the cool air that has cooled the lower display chamber 6 is lowered again by driving the lower blower fan 18. It is sucked into the duct 14 from the opening 15 and cooled again by the cooler 17. The cool air in the lower display chamber 6 does not flow into the upper display chamber 7 through the upper and lower communication ports 28 because the upper and lower communication ports 28 are closed. In this way, the cool air circulates between the lower part in the duct 14, the intermediate blow-out duct 35, and the lower display chamber 6, so that the lower display chamber 6 has a preset temperature (5 ° C.). ) Is refrigerated controlled.

The temperature in the lower display chamber 6 is detected by the temperature sensor 11, and when the temperature in the lower display chamber 6 becomes lower than the set temperature (5 ° C.) to be controlled, the control unit 41 outputs a control signal (not shown). The stop signal for stopping the operation of the refrigeration apparatus including the cooler 17 is output from the unit, and the drive of the cooler 17 is stopped. When the driving of the cooler 17 is stopped, the temperature in the lower display chamber 6 gradually increases, and when the temperature rises to a certain temperature, the driving of the cooler 17 is resumed.

  On the other hand, on the upper display chamber 7 side, when the upper blower fan 19 is driven, the air in the upper display chamber 7 is sucked into the upper part of the duct 14 from the upper communication port 22 and sucked into the upper part of the duct 14. The air thus blown out into the upper display chamber 7 from the upper opening 16. The air blown into the upper display chamber 7 is again sucked into the upper part of the duct 14 from the upper communication port 22 by driving the upper blower fan 19. In this way, air circulates between the upper part in the duct 14 and the upper display chamber 7.

  Here, the air in the upper display chamber 7 is cooled by heat conduction from the lower portion of the lower display chamber 6 or the duct 14, and the temperature becomes low even if cold air cooled by the cooler 17 is not supplied. . For this reason, the inside of the upper display chamber 7 is refrigerated by the circulating air.

  Further, in the upper display chamber 7, when the heater 20 is driven, air that circulates between the upper portion in the duct 14 and the upper display chamber 7 and blows into the upper display chamber 7 from the upper opening 16. The inside of the upper display chamber 7 is heated and cooled to a preset temperature (20 ° C.) by cooling by heat conduction from the lower display chamber 6 side and heating by the heater 20.

  The temperature in the upper display chamber 7 is detected by the temperature sensor 12, and when the temperature in the upper display chamber 7 becomes higher than the set temperature (20 ° C.) for refrigeration control, the driving of the heater 20 is stopped. .

  When the inside of the lower display chamber 6 is controlled to be refrigerated to 5 ° C. and the inside of the upper display chamber 7 is controlled to be refrigerated to 20 ° C., it flows through the intermediate blowout duct 35 and between the inside of the lower display chamber 6 and the inside of the duct 14. The circulating cold air does not easily enter the upper front corner portion in the lower display chamber 6, specifically, the region of the lower portion of the first partition 24 in the lower display chamber 6, and condensation occurs in this region. It becomes easy. Therefore, when the inside of the lower display chamber 6 is controlled to be refrigerated to 5 ° C. and the inside of the upper display chamber 7 is controlled to be refrigerated to 20 ° C., the dew-proof heater 39 is energized and the upper front corner portion in the lower display chamber 6 By heating, it is possible to prevent the occurrence of condensation at the upper front side corner portion in the lower display chamber 6.

(Second Embodiment)
The refrigerated showcase of the 2nd Embodiment of this invention is demonstrated based on FIG. In addition, the same code | symbol is attached | subjected to the same component as the component demonstrated in 1st Embodiment, and the overlapping description is abbreviate | omitted.

  The basic configuration of the refrigerated showcase of the second embodiment is the same as that of the refrigerated showcase 1 shown in FIGS. 1 to 5, and the refrigerated showcase of the second embodiment is the refrigerated showcase of the first embodiment. The difference from the case 1 is that a plurality of punching holes 44 are formed in the horizontal portion 25 a of the second partition 25. A hole is formed in a portion facing the punching hole 44 in the heat insulating material 32 attached to the lower surface of the horizontal portion 25a.

  In such a configuration, side dishes etc. are displayed in the lower display room 6, lunch boxes and the like are displayed in the upper display room 7, the inside of the lower display room 6 is controlled to be refrigerated at 5 ° C., and the inside of the upper display room 7 is 20%. A case where the refrigeration control is performed to ° C. will be described.

  In this case, as described in the first embodiment, the operation lever 34 is operated to move the first and second partition bodies 24 and 25 to the rear positions. By this moving operation, the upper and lower communication ports 28 are closed, the lower communication port 21 and the upper communication port 22 are opened, and the inside of the duct 14 is closed to the lower portion and the upper portion by the horizontal portion 25a of the second partition 25. Is done.

  When the start switch for operating the refrigerated showcase 1 is turned on from this state, the cooler 17, the lower blower fan 18, the upper blower fan 19, the heater 20, and the dew proof heater 39 are driven.

  When the lower blower fan 18 is driven, air in the lower display chamber 6 is sucked into the lower part of the duct 14 from the lower opening 15, and the air sucked into the lower part of the duct 14 is cooled by the cooler 17. The cooled and cooled air (cold air) flows into the intermediate blowing duct 35 from the lower communication port 21, flows through the intermediate blowing duct 35, and blows out into the lower display chamber 6. In this way, the cool air circulates between the lower display chamber 6, the lower portion of the duct 14, and the intermediate blowout duct 35, so that the lower display chamber 6 has a preset temperature (5 ° C.). ) Is refrigerated controlled.

  On the other hand, on the upper display chamber 7 side, the air in the upper display chamber 7 is sucked into the upper portion of the duct 14 from the upper communication port 22 by being driven by the upper blower fan 19 and cooled by the cooler 17. A part of the cold air is sucked into the upper part of the duct 14 through the punching hole 44 formed in the horizontal part 25a of the second partition 25. Therefore, the air in the upper display chamber 7 is cooled by the heat conduction from the lower display chamber 6 side and the cold air passing through the punching holes 44, so that the temperature in the upper display chamber 7 can be quickly lowered. For this reason, when the door 5 of the upper display chamber 7 is opened and closed and the temperature in the upper display chamber 7 rises, the temperature in the upper display chamber 7 is quickly returned to the set temperature (20 ° C.). Can do.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, some constituent elements may be deleted from all the constituent elements shown in the above-described embodiment, and further, constituent elements over different embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 Refrigerated showcase 2 Showcase main body 3 Machine room 4 Opening part 5 Door 6 Lower display room 7 Upper display room 8 Compartment 9 Display shelf 10 Base plate 11 Temperature sensor 12 Temperature sensor 13 Back plate 14 Duct 15 Lower opening 16 Upper opening 17 Cooler 18 Lower blower fan 19 Upper blower fan 20 Heater 21 Lower communication port 22 Upper communication port 23 Communication port forming member 24 First partition member 25 Second partition member 25a Horizontal portion 25b Vertical portion 26 Intermediate blowing duct forming plate 27 Intermediate blowing member Duct forming plate 28 Upper and lower communication ports 29 Heat insulating material 30 Opening 31 Heat insulating material 32 Heat insulating material 33 Connecting member 34 Operation lever 35 Intermediate blowing duct 36 Heat insulating material 37 Slit 38 Slit 39 Dew-proof heater 40 Proximity switch (switch, position detector)
41 Control unit 42 Storage unit 43 Set temperature switching unit 44 Punching hole

Claims (6)

In a closed type refrigerated showcase having a showcase body having an opening formed on the front surface and an openable / closable door attached to the opening,
A partition body provided in the showcase body, and partitioning the inside of the showcase body into a lower display chamber and an upper display chamber;
A duct provided in the showcase body, having a lower opening that opens to the bottom of the lower display chamber at one end and an upper opening that opens to the upper portion of the upper display chamber at the other end;
A cooler that is installed in the duct below the compartment and cools the air in the duct;
A lower blower fan that is installed in the duct below the compartment and sucks air in the lower display chamber into the duct from the lower opening;
An upper blower fan that is installed in the duct above the compartment, and blows air in the duct from the upper opening to the upper display chamber;
A lower communication port that is provided in the middle of the duct and communicates the duct and the lower display chamber;
An upper communication port that is provided in the middle of the duct and communicates the duct and the upper display chamber;
Have
The compartment is
Upper and lower communication ports communicating the lower display chamber and the upper display chamber;
A first partition body movable to an open position for opening the upper and lower communication ports and a closed position for closing the upper and lower communication ports;
A first position for closing the lower communication port and the upper communication port and opening the duct, and opening the lower communication port and the upper communication port and between the lower communication port and the upper communication port. A second partition body movable to a second position for closing the inside of the duct into a lower part and an upper part;
A refrigerated showcase characterized by comprising:   The first partition body and the second partition body are connected and provided so as to be movable integrally, and when the first partition body is located at the open position, the second partition body is located at the first position. The refrigerated showcase according to claim 1, wherein when the first partition is located at the closed position, the second partition is located at the second position.   The refrigerated showcase according to claim 1 or 2, further comprising a heater that is provided at an upper portion of the upper display chamber and heats air blown into the upper display chamber. A dew proof heater for heating the upper front side corner of the lower display chamber;
A switch for energizing the dew-proof heater when the first partition is located at the open position and the second partition is located at the first position;
The refrigerated showcase according to any one of claims 1 to 3, characterized by comprising:   The refrigerated showcase according to any one of claims 1 to 4, wherein a punching hole is formed in the second partition.   A position detection unit for detecting the positions of the first partition and the second partition, and a set temperature for refrigeration control of the lower display chamber and the upper display chamber are switched according to a detection result of the position detection unit. A refrigerated showcase according to any one of claims 1 to 5, further comprising a set temperature switching unit.

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