JPH0741367U - Cool box removable refrigerator - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a cool box removable refrigerator that can reliably discharge drain water due to water droplets or frost adhering to the evaporator while maintaining the freezing and refrigerating capacity. [Structure] A fan is arranged on a side of a cooling unit, fins of an evaporator are formed in parallel with a blowing direction of the fan, and the fin is covered by an upper surface and a lower surface of the evaporator, a cover, and a drip pan. Thus, by driving the fan, the air taken in from one side of the evaporator can be cooled and blown out from the other side, so that the cooling efficiency can be improved and the evaporator can be improved. By arranging the drip pan below the water, it is possible to discharge the water droplets dropped from the evaporator to the outside of the room during defrosting, stop of control, or the like.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is composed of a cool box base in which a refrigeration cycle is installed and a cool box for storing a refrigerating object or a refrigerating object, and the cool box is removable from the cool box base. Detachable refrigerator.

[0002]

[Prior art]

 A conventional movable on-vehicle refrigerator / freezer is, for example, as disclosed in Japanese Patent Laid-Open No. 4-39585, a refrigeration cycle including a compressor, a condenser, an evaporator, and the like, and a refrigeration cycle internally provided and casters and the like moved. A cool box base that has a mechanism and a cool box that is detachably attached to this cool box base, and an evaporator that extends horizontally is inserted into the cool box when the cool box is attached. This cools the inside of the refrigerator.

[0003]

[Problems to be solved by the device]

 In the conventional cool box detachable refrigerator, when the evaporator is defrosted, the water droplets that have adhered to the fins of the evaporator or the water droplets formed by melting frost (drain water) do not have a means for discharging it to the outside. It may fall on food items such as food stored in the box or collect on the bottom of the storage, and the accumulated water droplets may freeze. Or, there was a problem that the quality of the product deteriorated. Further, at the end of the freezing / refrigerating control, water droplets and frost adhering to the evaporator are melted and accumulated at the bottom of the refrigerator, which causes a bad odor in the refrigerator.

In addition, when a drain pan for collecting drain water is arranged, the drain pan impedes the flow of cold air in the cool box compartment, which causes a problem that the freezing and refrigerating capacity in the compartment is reduced. It was

For this reason, the present invention provides a cool box detachable refrigerator capable of reliably discharging drain water due to water drops or frost adhering to the evaporator to the outside while maintaining the freezing and refrigerating capacity. is there.

[0006]

[Means for Solving the Problems]

 In this invention, however, the refrigerating cycle is provided internally, and the cool box base is provided with the cooling section having the evaporator forming a part of the refrigerating cycle, and the cool box base is detachable. In addition, in a cool box detachable refrigerator having a cool box that stores the cooling unit when installed and serves as a refrigerating box, the cooling unit includes the evaporator, a fan arranged on the side of the evaporator, and this fan. The fins of the evaporator are formed parallel to the blowing direction of the evaporator, and the drip pan is provided to cover the lower surface of the evaporator and to discharge the water droplets dripping from the evaporator to the outside.

[0007]

[Action]

 Therefore, in this invention, the fan is arranged on the side of the cooling unit, the fins of the evaporator are formed in parallel with the blowing direction of the fan, and the lower surface of the evaporator is covered with a drip pan to drive the fan. As a result, the air taken in from one side of the evaporator can be cooled and blown out from the other side, so that the cooling efficiency can be improved and a drip pan can be provided below the evaporator. By arranging them, water droplets dripping from the evaporator during defrosting, stop of control, etc. can be discharged to the outside of the room, and the above problems can be achieved.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

A cool box removable refrigerator 1 shown in FIG. 1 is a cool box base (2a, 2b) for storing refrigerated items and a cool box base on which at least two cool boxes 2 can be mounted. 3 and 3.

As shown in FIG. 2, the cool box base 3 is formed in an L shape by a side wall portion 3a and a pedestal portion 3b, and a moving wheel 4 and a stop wheel are provided under the pedestal 3b. It has a stopper 5 for fixing and is mounted on the bed of a vehicle. A guide rail 6 (6a, 6b) for mounting the cool box 2 is fixed to the side wall 3a of the cool box base 3, and a cooling unit 80 (80a, 80b) is fixed at a predetermined position. There is. The guide rail 6 is provided with a cool box locking mechanism 64 at both ends, and both sides are supported by a supporting column 7. One side of the supporting column 7 is provided with a cool box 2. The position detection switch 11 (11a, 11b) shown in FIG. 4 for detecting the position of the setting switch 10 for setting the temperature is attached.

As shown in FIG. 3, the cooling unit 80 includes an evaporator mounting block 81 for fixing the evaporator 8 to the side wall 3 b of the cool box base 3, and a pipe formed on the evaporator mounting block 81. The evaporator 8 in which the refrigerant flow path tube 84 is fitted and fixed in the fitting holes 82 and 83, the fin 85 formed parallel to the evaporator mounting block surface, and one end of this fin 85, in other words, A fan 86 (a pair of fans is used in this embodiment, but the number may be one or three or more, and the number is not particularly limited) arranged on the side of the evaporator, and the evaporator. And a drip pan 88 that covers the lower surface of the evaporator. In addition to the pipe fitting holes 82 and 83, the evaporator mounting block 81 has a hole 90 in which the temperature detecting sensor 28 (28a, 28b) is arranged and a hole 92 through which an electric wire 91 to the fan 86 passes. It is formed.

The drip pan 88 covers the lower surface of the evaporator 8 and is formed to incline at a predetermined angle toward the drain water discharge hole 89 formed in the evaporator mounting block. In this embodiment, the cover 87 and the drip pan 88 are formed as separate bodies, but they may be formed as one body. In that case, the cover and the drip pan can be formed at one time, This has the effect of reducing the number of work steps. In addition, since the evaporator is covered with the cover and the drip pan, there is an effect that the fins of the evaporator are not damaged when the cool box is attached or detached or when the items to be refrigerated are put in or taken out.

Inside the cool box base 3, for example, a refrigeration cycle as shown in FIG. 4 is provided and controlled by the control unit 20. This refrigerating cycle is composed of an upper refrigerating cycle and a lower refrigerating cycle, and the cool box 2a arranged on the upper side and the cool box 2b arranged on the lower side can be independently controlled. Is.

The upper refrigeration cycle includes a compressor 21a, an upper condenser 22a that uses half of the shared condenser 22, a dryer 23a, a solenoid valve 24a, a short capillary tube 25a connected in series to this solenoid valve 24a, and this solenoid valve. 24a and a short capillary tube 25a, a hot gas bypass passage constituted by a long capillary tube 26a connected in parallel to a flow channel and an upper evaporator 8a, and further opened by a solenoid valve 27a during defrost control. 31a.

The lower refrigeration cycle includes a compressor 21b, a lower condenser 22b that uses the other half of the shared condenser 22, a dryer 23b, a solenoid valve 24b, a short capillary tube 25b connected in series to the solenoid valve 24b, Hot gas that is composed of a long capillary tube 26b and a lower evaporator 8b that are connected in parallel to a flow path that is composed of a solenoid valve 24b and a short capillary tube 25b, and that is opened by a solenoid valve 27b during defrost control. It has a bypass passage 31b.

The control unit 20 has a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), an input / output port (I / O), a drive circuit, and the like, which are not shown, and is known per se. And the inside temperature signal (T) detected by the evaporator temperature detection sensors 28a and 28b arranged near the evaporators 8a and 8b._E1, T_E2), The temperature signal (T) detected by the temperature detection sensors 29a and 29b for detecting the temperatures of the discharge sides of the capacitors 22a and 22b._C1,T _C2 ), The set temperature signal (SW) from the position detection switches 11a and 11b.₁, SW ₂ ), And at least a signal from the operation panel 31 is input and processed by a predetermined program, then signals (C1, C2) for controlling the compressors 21a, 21b, a signal (F1) for controlling the condenser blower 30, The signals (S1, S2, S3, S4) for controlling the valves 25a, 25b, 27a, 27b and the signals (F2, F3) for controlling the fans 86a, 86b are output.

As shown in FIG. 5, the cool box 2 is composed of a cool box body 41 and a door 42. The cool box body and the door 42 have a heat insulating structure filled with urethane foam resin, for example. The outer and inner surfaces of the cool box body 41 and the door 42 are made of iron plate or synthetic resin material. A packing 43 is attached to the inside of the door 42 to improve the airtightness of the cool box when the door 42 is closed. The temperature setting switch 10 is provided on one side of the cool box body 41, and a lifting handle 44 and a pulling handle 45 are provided on both sides. Further, the back wall 46 of the cool box 2 is formed with a cooling portion insertion hole 47 through which the cooling portion 80 extends, and the cooling portion insertion hole 47 is provided with an opening / closing lid 48. is there .

As shown in FIG. 6, when the cool box 2 is mounted on the cool box base 3, the cooling unit 80 pushes up the open / close lid 48 and extends it into the cool box 2. At the same time, the position of the temperature setting switch 10 provided on the side of the cool box 2 is read by the position detection switch 11, and the operation mode in the cool box 2 is changed to, for example, cool (COOL) or chilled (CHILLED). Set to either Freeze or Freeze.

As a result, when the set operation mode is set to cool or chilled, the solenoid valve 24 (24a, 24b) is opened and the short capillary tube 25 (25a, 25b) and the long capillary tube 26 are opened. (26a, 26b) forming a refrigerant flow channel for refrigeration, and when freeze is set, form a freezing refrigerant passage using only the long capillary tube 26 by closing the electromagnetic valve 24, It largely divides the capacity of the refrigeration cycle. Further, by controlling the rotation speed or capacity of the compressor 21 (21a, 21b), the temperature inside the cool box compartment is controlled to approach a desired temperature. Simultaneously with this control, by driving the fan 86 of the cooling unit 80, as shown in FIG. 7, the air in the refrigerator is sucked and cooled from one side portion and discharged from the other side portion into the refrigerator. The inside of the refrigerator can then be cooled.

In addition, in the refrigeration cycle configured as described above, when defrost control is requested, the electromagnetic valve 27 (27a, 27b) is opened and the hot gas bypass passage 31 (31a, 31b) is opened. The high-temperature and high-pressure discharged from the compressor 21 flows to the evaporator 8 via the hot gas bypass passage 31, whereby the evaporator 8 is heated and the frost and ice attached to the evaporator 8 can be melted. The fan 86 may be driven during the defrosting control. In this case, the defrosting effect inside the cool box can be improved.

When the above defrost control is performed or when the freezing / refrigerating control is stopped, the frost attached to the evaporator 8 becomes water drops and drops onto the drip pan 88. The water droplets dropped on the drip pan 88 are discharged as drain water from the drain water discharge hole 89 to the outside along the inclination of the drip pan 88. The drain water flowing out from the drain hose 92 may be collected in a basin 3b of the cool box base 3 by arranging a water collecting tub.

As a result, the drain water dripping from the evaporator 8 can be prevented from dripping on the refrigerated object to be refrigerated stored in the cool box 2. It is possible to prevent the deterioration of the product. Further, since the fan 86 is arranged on the side of the cooling unit 80, forced cooling of the inside of the refrigerator becomes possible, so that the freezing and refrigerating capacity can be prevented from lowering.

[0023]

[Effect of device]

 As described above, according to the present invention, the fan is arranged on the side of the cooling unit, the fins of the evaporator are formed parallel to the blowing direction of the fan, and the lower surface of the evaporator is covered with the drip pan. In addition, since water droplets dropped from the evaporator can be discharged to the outside of the refrigerator when the evaporator is defrosted, it is possible to prevent the objects to be refrigerated from getting wet.

Further, since the inside of the refrigerator is cooled by the forced convection by the fan, the refrigerating efficiency in the cool box can be improved, and the defrosting efficiency can be improved by driving the fan even during the defrosting. It can be done.

[Brief description of drawings]

FIG. 1 is a side view of a cool box removable refrigerator according to an embodiment of the present invention.

FIG. 2 is a side view of a cool box base according to an embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a configuration of a cooling unit.

FIG. 4 is an explanatory diagram showing a configuration of a refrigeration cycle arranged in a cool box base.

FIG. 5 is a perspective view showing a configuration of a cool box.

FIG. 6 is an explanatory view showing a state in which the cool box is mounted on the cool box base.

FIG. 7 is a partial front view showing a cooling unit extending into a cool box.

[Explanation of symbols]

 1 Cool Box Detachable Refrigerator 2 (2a, 2b) Cool Box 3 Cool Box Base 8 Evaporator 80 Cooling Unit 81 Evaporator Mounting Block 85 Fin 86 Fan 87 Cover 88 Drip Pan

Claims (1)

[Scope of utility model registration request] 1. A cool box base in which a refrigeration cycle is installed, and a cooling unit having an evaporator forming a part of the refrigeration cycle is extended, and the cool box base is detachable and attachable to the cool box base. In a cool box detachable refrigerator having a cool box that sometimes houses the cooling unit and serves as a refrigerator, the cooling unit is parallel to the evaporator, a fan arranged on a side of the evaporator, and a blowing direction of the fan. A cool box removable refrigerator comprising a fin of the evaporator formed in the above, a lower surface of the evaporator, and a drip pan for discharging the water droplets dripping from the evaporator to the outside.