JPS60188776A - Damper device for showcase - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a damper device for a showcase in which refrigerated and heated products are displayed and sold at a store or the like.

Conventional configuration and its problems 1 to 4 show conventional showcases.

Figures 1 to 4 of this conventional showcase are shown below.
This will be explained with reference to the diagram.

In the figure, reference numeral 1 denotes a main body of the showcoat, which is provided with a storage chamber 2 having an opening at the front, and a machine chamber 3 provided with a cooling chamber (not shown) at the bottom of the storage chamber 2. The opening of the storage room 2 is provided with a door 4 which is pivotally supported on one side.

Further, on the other side of the storage room 2, an exhibition window 7 made of double glass 6.6 is provided. In this storage room 2, storage room 2
There are several heat insulating partition walls 8 that partition the interior into two upper and lower chambers.

Ducts 9 are formed on both sides of the heat insulating partition wall 8 to communicate the upper and lower chambers. Several dampers 11, which are opened and closed by levers 10, are rotatably installed in the duct 9. In fact, several heaters 12 are installed on the clay wall of the heat-insulating partition wall 8 to heat the upper chamber side. Reference numerals 13 and 14 are a discharge port [1] and a suction port which are provided on the bottom wall of the storage chamber 2 and communicate with the cooling chamber.

When the entire storage chamber has been cooled, the damper 11 is moved using the lever 10 to open the duct 9 (the state shown in FIG. 3). This allows cool air to circulate between the upper and lower compartments. Next, when it is desired to cool the royal side of the storage chamber 20 and warm the upper chamber side, the damper 11 is moved using the lever 1o to close the duct 9 (the state shown in FIG. 4). At this time, although not shown, the heater 12 may be energized by a switch. However, if one forgets to close the duct 9 and turn on the heater 12, there is a drawback that the upper chamber cannot be heated. However, if the heater 12 was energized with the duct 9 open, the royal room 11111 would also be heated.

OBJECTS OF THE INVENTION The present invention eliminates the drawbacks of the prior art described in section 2 and is to automatically close the duct with a damper whenever the upper chamber side is heated.

Structure of the Invention In order to achieve the above object, the present invention provides a storage chamber with an opening at the front, a door for supporting the opening of the storage chamber, and an outlet for circulating cold air formed in the bottom wall of the storage chamber. an inlet, an insulating partition wall that partitions the storage room into two upper and lower chambers, a duct provided on the insulating partition wall and communicating the upper T: two chambers, a damper that opens and closes this duct, and a damper that opens the damper; A heater comprising: a spring made of metal having a shape memory effect to close the duct; a heater for heating the spring to close the duct with the damper; and a heater for heating the chamber. The damper always closes the duct when electricity is applied.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 6 and 7. Structures that are the same as those of the prior art will be given the same reference numerals and detailed explanations thereof will be omitted.

Reference numeral 16 designates several aluminum plates with good thermal conductivity on the top surface of the heat insulating partition wall 8. Further, an iron plate 16 is attached to the lower surface, and a heat insulating block 17 is sandwiched between them. Reference numeral 18 denotes a spring having a shape memory effect, with one end fixed to the aluminum plate 16 with screws or rivets, and the other end fixed to the damper 19 with screws or rivets. 21 is the upper end of the duct 9.

A switch i formed in
・It's a brim. Incidentally, on the back side of the aluminum plate 15 on the top surface of the heat insulating partition wall 80, a heater 12 is provided which is held down with aluminum foil. This heater 12 is used to heat the upper chamber side and to use this heat to change the shape of the spring 18 having a shape memory effect.

Reference numerals 13 and 14 designate a discharge port and a suction port for circulating cold air that communicate with the cooling chamber provided on the bottom wall of the storage chamber 2. In such a device, when the heater 12 is energized, the sphere 18 expands under the influence of this heat, and the Dunno <-19 connected to it rotates together, causing the string to open.
(-21 and closes the actuator 9 (state shown in Fig. 6). In other words, since the damper 19 automatically rotates,
There is no need for manual operations like in the past, and the upper part of the storage room can be heated and the upper part of the storage room can be refrigerated. When the heater 12 is de-energized, the discharge port 13. The temperature of the lower room, which is cooled by the circulation of cold air from the inlet 14, is reduced to the duct 9.
The spring 18 is cooled through the lower surface 20 of the spring 18.

As a result, the spring 18 bends and opens the duct 9 (
Figure 7), and the cold air is circulated in the royal room. Therefore, the damper 19 can be reliably opened and closed at the temperature of the upper chamber.

In the embodiment, the heater 12 for heating the spring 18 is used together with the heater for heating the upper chamber, but they may be used separately.

Effects of the Invention As is clear from the embodiments described above, the present invention is to attach a spring having a shape memory effect to a damper that opens and closes a duct, and closes the damper by heating this spring. Therefore, be sure to close the damper when heating.
This prevents a decrease in heating efficiency, and also eliminates the disadvantage of leaving the upper chamber in an uncooled state even though it is desired to heat it.

[Brief explanation of drawings]

Figure 1 is a perspective view of a conventional showcase, and Figure 2 is a perspective view of a conventional showcase.
3 is an enlarged sectional view showing the cooling state shown in FIG. 2, FIG. 4 is an enlarged sectional view showing the cooling and heating states shown in FIG. 2, and FIG. 6 is an enlarged sectional view of the main part of FIG. 6, and FIG. 7 is an enlarged sectional view of the cooling and heating state of FIG. 6. 8...Insulating partition wall, 9...Duct, 12...
...Heater, 18...Spring, 19...
...damper. Name of agent: Patent attorney Toshio Hibao and 1 other person No. 1
Figure 2 Figure 5

Claims (1)

[Claims] A storage room with an open front, a door that covers the opening of the storage room, an outlet and an inlet for cold air circulation formed on the bottom wall of the storage room, and insulation that partitions the storage room into two upper and lower rooms. a partition wall, a duct provided in the heat-insulating partition wall and communicating with the two upper and lower chambers, a damper for opening and closing this duct, a spring made of metal having a shape memory effect attached to the duct, and a spring for heating the spring. A damper device for a showcase, which is equipped with a heater for closing the duct with the damper and a heater for heating the chamber.