JPH0672737B2 - Humidifier for refrigerated case - Google Patents

Description

The present invention relates to a humidifying device for a refrigerated showcase for humidifying the inside of a refrigerated showcase for storing and displaying fresh food such as vegetables and fruits for a long period of time.

(B) Prior art A conventional humidifying device for a refrigerated showcase of this type is disclosed in JP-A-60-295.
As disclosed in Japanese Patent Publication No. 79, when the power is turned on, the maximum amount of fog is discharged, so that a refrigerated showcase having a short width is excessively humidified. Therefore, vegetables and the like have a drawback that they are easily damaged by excessive humidification and cannot maintain freshness. If the amount of humidification is large,
Due to the fog, vegetables and the like cannot be seen well, and there is a drawback in that the showcase that functions as a display cannot fulfill its function.

However, depending on the refrigerated showcase having a long width, the humidification amount may be constant, so that the adjustment of the humidification amount is not always necessary.

(C) Problems to be Solved by the Invention In view of the problems of the above-mentioned conventional technology, the present invention aims to provide a humidifying device that can be applied to models that require adjustment of humidification amount and models that do not. To do.

(D) Means for Solving the Problems In the present invention, a main body mounted and fixed on the top surface of a refrigerated showcase and a plurality of ultrasonic transducers at the bottom are arranged along the longitudinal direction thereof. A horizontally elongated atomized water tank provided in the main body, a blower provided in the main body for sending external air to be sucked from the suction port into the atomized water tank by pressure, and a corresponding ultrasonic oscillation circuit to the vibrator. A plurality of lead-out pipes provided corresponding to each of the ultrasonic transducers so as to lead out the fog in the atomized water tank that has been generated to the outside together with the wind of the blower,
In a humidifying device for a refrigerating showcase, which has one end for its outlet pipe and the other end for communicating with the refrigerating showcase, a selecting operation part and an operation of the selecting operation part. A switching switch provided to correspond to the vibrator, for adjusting whether the humidification amount by the vibrator is constant or adjustable, a adjusting operation section, and a resistance interlocking with the operation of the adjusting operation section. A variable resistor provided to correspond to the oscillator for varying the oscillation output of each oscillation circuit by changing its value, and a connector for connecting the variable resistor to the oscillation circuit, are selected. The operation unit is installed on the main body side of the humidifying device, and the adjusting operation unit is installed on the front part of the refrigerating showcase apart from the main body of the humidifying device.

(E) Action The humidification amount adjusting device (3) is attached to the reflection plate (4) at the front of the top surface (1A) of the refrigerated showcase (1) with a screw via the attachment piece (53), and the connector B (57) is attached. ) (57) is connected to connectors A (49) and (49) respectively, and when the selection operation part (50) is operated, each changeover switch (51) is interlocked and opened, and each variable resistor (56) causes each oscillation circuit. Connect to (23),
The amount of humidification can be adjusted. Moreover, since the selection operation part is installed on the main body side of the humidifying device and the adjusting operation part is installed on the front part of the refrigerating showcase which is separated from the main body of the humidifying device, when the humidification amount needs to be adjusted, the refrigeration show The humidifying amount can be adjusted by operating the adjustment operation unit while checking the humidifying state in the case.When the humidifying amount is constant and the humidifying amount does not need to be adjusted, the variable resistor is used to connect the oscillator circuit through the connector. It is excellent in operability and usability because it is only necessary to change the changeover switch by the selection operation section without connecting to.

(F) Embodiment One embodiment of the present invention will be described in detail below with reference to the drawings. (1) is a refrigerated showcase, (2) is a humidifying device mounted and fixed on the top surface (1A) of the showcase (1), and (3) is a front part of the top surface (1A) of the showcase (1). The humidifying amount adjusting device of the humidifying device (2) fixed to the reflection plate (4) is connected to the humidifying device (2) through the lead wire (5) to adjust the humidifying amount by remote control. Therefore, it is necessary to install the adjusting device (3) at a position where it can be easily operated, and it is preferable that the adjusting device (3) is on the reflecting plate (4) or the front part of the top surface (1A).

The refrigerating showcase (1) has an opening (6) on the front side, and a partition plate (9) forming a cool air passage (8) with the inner wall surface of the heat insulating wall (7) is arranged to provide the cold air passage. A cooler (10) and a blower (11) are installed in the lower space of (8), and a plurality of stages for displaying vegetables and the like are provided in a storage room (12) surrounded by a partition plate (9). It is equipped with shelves (13) (13). (1
Reference numerals 4) and (15) are an outlet and an inlet formed in the upper and lower ends of the opening (6), forcing the air cooled by the cooler (10) to be forcibly circulated by the blower (11) as shown by the arrow. Storage rooms (12)
An air curtain is formed in the opening (6) while cooling the inside.

Next, the humidifying device (2) will be described in detail. Reference numeral (16) is a case body in which the peripheral wall (17), the upper wall (18) and the atomizing water tank (19) are integrally molded with ABS resin, and both side walls (17) of the peripheral wall (17) are formed.
A) (17A) The lower end is fixed to the top surface (1A) of the showcase (1), which is the installation surface, with the fixing pieces (20A) (2
0A) is bent sideways. (21) is the atomized water tank (1
A plurality of ultrasonic transducers are arranged side by side on the bottom surface of (9), (22) is a mounting body of the transducer (21), and (23) is an ultrasonic oscillation circuit for driving the transducer (21). (24) is a stainless steel lid that closes an opening formed in the upper wall (18) above the atomization water tank (19), and is fixed to the upper wall (18) with screws (25).
(26) is an L-shaped synthetic resin-made lead-out cylinder, which is rotatably supported by the lid (24) so as to be prevented from coming off. It is arranged corresponding to each child (21). In this embodiment, the vibrator (21)
Since four are provided, four lead-out tubes (26) are also provided. One end of the outlet tube (26) has the cold air passage (8).
It is connected to the communication pipes (27) which are respectively led out inside.

(28) (29) are standing walls for wave protection. These standing walls (28) (2
9) The water supply auxiliary tank (32) with the float auxiliary tank (30) and the water supply discharge pipe (31) facing both sides of the atomization water tank (19)
The auxiliary tanks (30) and (32) communicate with the main water tank (33) through the communication port. Reference numeral (34) is a drain outlet pipe connected to the drain pipe (35) via the connection port (36), and the water in the atomization water tank (19) can be drained by opening the drain valve. The water supply discharge pipe (31) is connected to the water supply pipe (39) connected to the water supply via the water supply solenoid valve (37) and the connection port (38).

Reference numeral (40) is a first float switch arranged in the float auxiliary tank (30), and detects drought in the water tank (19) when the float descends, and sends it to each ultrasonic oscillation circuit (23). The power supply is stopped to prevent damage to each vibrator (21) due to vibration when no load is applied. Reference numeral (41) is a second float switch (shown in FIG. 1) which is also arranged in the float auxiliary tank (30), and the water level in the water tank (19) is juxtaposed with the first float switch (40). The water supply solenoid valve (37) is energized when descending from a predetermined position to supply water into the water tank (19) through the water supply discharge pipe (31).

Reference numeral (42) is an outlet to the atomizing water tank (19) of the air by the blower (43) behind the water tank (19) in the case body (16),
The water tank (19) is provided above the one tank wall. A suction port is opened in the mounting plate (44) at the rear of the blower (43), and a filter (45) is arranged in the suction port. (Four
6) is a power switch.

A recess (47) is formed next to the filter (45), and a power terminal block (48) connectable to a commercial power source and a first connector A (49) (49) are formed in the recess (47). And a selection operation section (50). When the selection operation unit (50) is operated, the changeover switches (51) (51) (51) (51) provided corresponding to the vibrator (21) are opened and closed in association with the operation, and the corresponding The amount of humidification by the vibrator (21) is switched between a fixed amount and an adjustable amount.
(3) is the above-mentioned humidification amount adjusting device, and a fluorescent lamp (52) is provided on the back side.
Mounting holes (54) are formed in the mounting pieces (53) on both sides so that the mounting holes (54) can be fixed to the reflection plate (4). Reference numeral (55) is an adjustment operation unit for changing the resistance value of the variable resistors (56) (56) (56) (56) inside the case, and the vibrator (21) is interlocked with the operation of the operation unit (55). ), The variable resistors (56), (56), (56), (56) provided to correspond to (1) are adjusted to vary the oscillation output of each oscillation circuit (23). The adjusting device (3) is connected to the second connector B (57) via the lead wire (5).
(57) is connected, and the connectors B (57) and (57) can be connected to the connectors A (49) and (49). When the selection operation part (50) is switched while both connectors A and B are connected, the amount of humidification by the ultrasonic transducer (21) can be adjusted by the adjusting device (3). is there. (58) is a lid of the recess (47).

In FIG. 1, reference numeral (59) is a power transformer, which is configured to obtain two outputs with different power supply voltages. (60)
Is a relay that degausses by opening the first float switch (40) when the water in the atomizing water tank (19) becomes dry, and the switch (60A) is opened by the degaussing, and each ultrasonic oscillation circuit (23) is made inoperative. Similarly, (61) is a relay that is excited by closing the second float switch (41) when the water level in the water tank (19) reaches a predetermined position, and the switch (61A) is closed by the excitation. Energize the water supply solenoid valve (37) to open it.

The operation will be described below with the above configuration. First, the humidification amount adjusting device (3) is not attached to the reflection plate (4) and the connectors B (57) and (57) are not connected to the connectors A (49) and (49). The case where adjustment is not possible will be described. In this case, the selector switches (51) (51) (51) (5
1) is closed and the amount of humidification is constant. First, connect the power supply to the power supply terminal (48) and close the power supply switch (46), and then the blower (43) and the ultrasonic oscillator circuit (23).
Is activated, the outside air passing through the filter (4) enters the space between the bottom surface of the atomization water tank (19) and the bottom wall of the ultrasonic humidifier (2), and the transformer (59) and the oscillation circuit (23) While cooling, it is supplied into the atomization water tank (19) through the air outlet (42) opened in the water tank (19). At this time, a water column is generated on the water surface by driving the ultrasonic transducer (21). Then, the mist generated around the water column is guided from the humidifying device (2) into the cold air passage (8) of the refrigerating showcase (1) through the outlet tube (26) and the communication pipe (27). Then, the cold air in the cold air passage (8) joins and is blown out from the air outlet (14) into the storage chamber (12) to humidify the vegetables and the like on the shelf (13).

Next, the humidifying amount adjusting device (3) is attached to the reflecting plate (4) at the front of the top surface (1A) of the showcase (1) with a screw via the attaching piece (53), and the connector B (57) (57). ) Is connected to the connectors A (49) (49) and the selection operation section (50) is operated, each changeover switch (51) is opened and each variable resistor (56) is connected to each oscillation circuit (23). The amount of humidification can be adjusted. That is, the amount of humidification can be increased / decreased by rotating the adjustment operation section (55). Therefore, the oscillation output of each oscillation circuit (23) can be varied at the same time by a single operation, so that the user can change the humidification amount while observing the state of vegetables and the like. Still, the oscillating output of each oscillating circuit (23) can be varied at the same time by a single operation, so that the humidifying device is very convenient for the user.

(G) Effect of the Invention As described above, the present invention can be applied to a refrigerated showcase that requires humidification amount adjustment and an unnecessary showcase,
For example, if the humidification amount adjusting device is not attached to the showcase having a long width, but is attached to the short showcase, the humidification is appropriately performed. Also, when the adjusting device is installed, the amount of humidification can be changed while observing the condition of vegetables, etc., so vegetables can be humidified appropriately. It has excellent operability and usability, as the amount of humidification can be kept constant simply by switching the selector switch on the operating section.

[Brief description of drawings]

FIG. 1 is an electric control circuit diagram of the humidifier of the present invention, FIG. 2 is a perspective view of a refrigerating showcase with the humidifier attached, FIG. 3 is a vertical side view of the showcase, and FIG. 4 is a humidifier. FIG. 5 is a vertical cross-sectional rear view of FIG.
FIG. 7 is a perspective view of the humidifying device, and FIG. 7 is a diagram showing a recess and a humidifying amount adjusting device. (1) …… Refrigerator showcase, (2) …… Humidifier,
(3) …… Humidity amount adjustment device, (4) …… Reflector, (21)
...... Ultrasonic transducer, (23) …… Ultrasonic oscillator circuit, (49)
(49) …… First connector A, (50) …… Selection operation part, (51) …… Changeover switch, (55) …… Adjustment operation part,
(56) …… Variable resistance, (57) (57) …… Second connector B.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-29579 (JP, A) Actual development Sho-60-65586 (JP, U) Actual public Sho-58-25257 (JP, Y2)

Claims (1)

[Claims] 1. A horizontally-long mist having a main body mounted and fixed on the top surface of a refrigerated showcase, and a plurality of ultrasonic transducers arranged at the bottom along the longitudinal direction thereof and provided in the main body. A fountain tank, a blower that is provided in the main body, and blows external air that is sucked from the suction port into the atomized water tank by pressure, and a corresponding ultrasonic oscillation circuit to generate fog in the atomized water tank by the vibrator. A plurality of outlet pipes provided corresponding to each of the ultrasonic transducers to be led out to the outside together with the wind of the blower,
In a humidifying device for a refrigerating showcase, which has one end for its outlet pipe and the other end for communicating with the refrigerating showcase, a selecting operation part and an operation of the selecting operation part. A switching switch provided to correspond to the vibrator, for adjusting whether the humidification amount by the vibrator is constant or adjustable, a adjusting operation section, and a resistance interlocking with the operation of the adjusting operation section. A variable resistor provided to correspond to the oscillator for varying the oscillation output of each oscillation circuit by changing its value, and a connector for connecting the variable resistor to the oscillation circuit, are selected. A humidifying device for a refrigerating showcase, characterized in that an operating part is installed on the main body side of the humidifying device, and an adjusting operating part is installed on the front part of the refrigerating showcase apart from the main body of the humidifying device.