JPH0436574A - Refrigerator - Google Patents

Abstract

PURPOSE:To make it possible to lay out two condensation units in one machine chamber by laying out a first condensation unit which constitutes a part of a refrigerator cycle on one side and a second condensation unit with constitutes a part of a refrigerator cycle on the other side so that their air intake sides may face each other where among the vertical sides of two groups facing other other in the air intakes sides, the distance of the mutual sides in terms of the front side is arranged to be larger than that of the mutual sides in the rear side. CONSTITUTION:In a machine chamber 40 there are laid out a first condensation unit U1, which comprises a first compressor 47, a first condenser 48, and a blower device 49 for the first condenser, thus constituting one partly of refrigerator cycle A, and a second condensation unit U2 which comprises a second compressor 51, a second condenser 52, and a blower device 53 for the second condenser, thus constituting the other party of refrigerator cycle B. The first condenser 48 and the second condenser 52 are arranged so that their respective air intake sides 48B and 52B may face each other. Particularly, among two groups of vertical sides facing each other in terms of the both air intake sides 48B and 52B, the distance P of the mutual sides in the front side is arranged to be larger than the distance Q of the mutual sides in the rear side.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] Industrial Application Field The present invention relates to a cooling device that cools a storage room using two independent refrigeration cycles.

Conventional technology An upper case that forms a machine room in which a compressor, condenser, and blower are installed above the insulation wall that defines the interior of the refrigerator, and a compressor, condenser, etc. installed below the insulation wall that defines the interior of the refrigerator. The upper case is placed on top of the lower case, and the back of the upper case is pushed backwards from the back of the lower case. In a low-temperature showcase with an exhaust space formed directly below the rear, a passage whose upper end opens upwind of the blower in the upper case and whose lower end opens toward the exhaust space is installed on the back wall of the insulation wall of the upper case. As the one that was formed, the special public
There is a publication No. 9553.

According to the above-mentioned publication, the upper and lower cases have machine chambers formed in both the upper and lower cases, so if the height of the cedar case from the floor is constant, the upper and lower cases Since machine rooms are located separately in each, the internal volume of the showcase tends to be small.Moreover, in the so-called dual type showcase shown in this publication, the upper case has a smaller volume than the lower case. Because the depth dimension is small, it is the same as the machine room formed at the bottom of the lower case. It cannot be arranged in the front-back direction.

For this reason, as shown in FIG. 3 of the publication, intake and exhaust ports had to be formed on the left and right sides, respectively, and the parts constituting the condensing unit had to be disposed in the left-right direction. In addition, in the case of a dual-item shimmy case, it is not possible due to space considerations to arrange each condensing unit corresponding to both the upper and lower cases only in the machine room formed at the top of the upper case. Not known.

Therefore, the present invention provides a cooling device in which two condensing units are arranged in one machine room.

[Structure of the Invention] Means for Solving the Problems The cooling device of the present invention comprises two mutually independent refrigeration cycles, and a first compressor that constitutes a part of one of the refrigeration cycles.
A first condensing unit consisting of a first condenser and a blower for the first condenser, and a second condensing unit that constitutes a part of the other refrigeration cycle and consisting of a second compressor-second condenser and a blower for the second condenser. The first and second condensers are equipped with a condensing unit and a machine room having an air inlet on the front and an air outlet on the back and housing the first and second condensing units. Of the two sets of opposing vertical sides on the air suction surface, the distance between the front sides is greater than the distance between the rear sides.

Effect 1. 2. The air suction surfaces of the condensers of each condensing unit face each other, and among the two sets of opposing vertical sides of the air suction surfaces, the distance between the front sides is greater than the distance between the rear sides. Since the condensers are arranged so that the condensers are large, the air passing through each condenser is guided away from each other. Moreover, when looking at the machine room in the direction of the wind flow,
Compared to the conventional case where each component is arranged linearly in the front-rear direction, the arrangement distance of the components constituting each condensing unit becomes longer.

Example The present invention will be described in detail below based on the drawings.

Reference numeral 1 denotes a cooling device, which will be explained by taking as an example a so-called low-temperature showcase whose main body is made up of a heat-insulating box 3 with openings 2 formed in the front for storing and taking out products.

The low-temperature showcase 1 is equipped with three rotating transparent doors 11 on the front side of the insulation box 3, which are rotatably supported by a pair of upper and lower hinges and have handles that can open and close the opening 2. A metal partition plate 12 is placed at an appropriate interval from the inner surface of the box 3.
and a bottom plate 13 are provided. This allows multiple shelves 1
4 and a fluorescent lamp as a lighting device located longitudinally in the front part of the side wall] 5, and two refrigeration cycles A.
and a cold air passage 19 formed by a partition plate 12, a bottom plate 13, and a heat insulating box 3, in which a plate-fin type evaporator 17 and an evaporator air blower 18 are installed, which act as an evaporator for B and B, and which use fins in common. A soft opening 20 and a suction opening 2I are formed along both upper and lower inner edges of the opening 2 to face each other.

By forcedly circulating the air (this is referred to as cold air) that has undergone heat exchange in the evaporator 17 using the blower 18, a cold air flow flows along the back surface of the transparent door 2 from the Fukihata port 20 toward the suction port 21. That is, the storage chamber 16 is cooled by forming an air curtain.

Reference numeral 40 denotes a machine room formed above the low-temperature showcase 1, that is, above the insulation box 3, which includes a top plate 41, left and right side plates 4
2.43 and a machine room cover 44 that also serves as an intake grill, and an intake port 45. Air exhaust ports 46 are formed on the back surface. Also, in this machine room 40, together with the first refrigerant pipe 17A in the plate fin type evaporator 17, a first compressor 47 and a first /
A first condenser consisting of a Q condenser 48 and a first condenser blower 49
A second condensing unit consisting of a second compressor 51, a second condenser 52, and a second condenser blower 53 that together with the second refrigerant pipe 17B in the plate fin type evaporator 17 constitute the other refrigeration cycle B. Condensation unit) U2 is installed respectively.

Inside this machine room 40, there is a blower device 4 for the first and second condensers.
In this embodiment, the first condensing unit U1 is located in the right half of the machine room.
It is assumed that the second condensing unit U2 is disposed in the left half of the machine room.

The first and second condensers 48 and 52 have respective air suction surfaces 48B and 52B facing each other, and a distance P between the two opposite vertical sides of the two air suction surfaces 48B and 52B on the front side. is the distance between the men behind Q
In this embodiment, the tips of the tube plates of both condensers are arranged such that the air suction surfaces 48B and 52B of both condensers form a single shape. The condenser is connected.

The upper surface of the ceiling wall of the insulation box 3 and the air suction surface 4 of each condenser
8B and 52B, the top plate 41, and the machine room cover 44 are tapered from the front side (i.e., the machine room cover side) to the back side (i.e., the air exhaust pressure port side), and are connected to the outside via the intake port 45. An air intake space 55 is formed.

56 and 57 are partition plates that prevent the air that has passed through the first and second condensers 48 and 52 from being guided again to the air suction side of each condenser. Between the condensing unit) Ul, U2 and the machine room cover 44,
A space is secured for arranging an operating section 58 provided with a power switch, a fluorescent light switch, etc., and other electrical components such as an electrical equipment box 59. The operation unit 5 placed in this space
8 and the electrical equipment box 59 are cooled by the outside air taken into the machine room by the operation of the air blowers 49 and 53 for both condensers.

In addition, since the intake space 5.5 is formed, the machine room 40
During inspection and maintenance, a work space is secured in front of each condenser 48, 52, and it is not only possible to inspect and maintain the condenser, but also to operate the operation unit 5.
It can be used as a temporary storage area when the electrical equipment box 8 or the electrical equipment box 59 is removed, making it easier to perform maintenance work on the machine room.

60 is an exhaust chamber formed in the lower part of the lower case 7;
Fluorescent lamp ballasts, evaporation plates, evaporation accelerators, etc. are installed.

61 and 62 are the first and second condensation units) U
These are right and left rear ducts that are provided protruding from the back of the cooling device 1 in correspondence with U2 and L, and extend from the machine room 40 to the exhaust chamber 60. The ducts 61 and 62 are spaced apart from each other, and each duct 61 and 62 is configured to independently guide air introduced from the intake port 45 and passed through each condensing unit from the machine room 40 to the exhaust chamber 60. A plurality of exhaust holes 63 are formed at appropriate positions on opposing surfaces of the left and right rear ducts 61 and 62, respectively.

[Effects of the Invention] As detailed above, according to the cooling device of the present invention, the first
The air suction surfaces of the condensers of each second condensing unit face each other, and of the two sets of opposing vertical sides on the air suction surfaces, the distance between the front sides is greater than the distance between the rear sides. Since each condenser was arranged so that
The air that has passed through each condenser is guided away from each other, and the merging of the passing air with each other is suppressed. Moreover, when looking at the machine room in the direction of wind flow, the distance between the parts constituting each condensing unit is longer than in the conventional case where each part is arranged linearly in the front and back direction. Not only can the first and second condensing units be arranged without increasing the depth of the machine room, but the depth of the machine room can also be reduced, and the cooling device can be made thinner.

[Brief explanation of the drawing]

Each figure shows an embodiment of the cooling device of the present invention. Figure 1 is a perspective view of the machine room, Figure 2 is a plan view with the top plate of the machine room partially cut away, and Figure 3 is the main body. FIG. 4 is a vertical cross-sectional view of a main part of a showcase having a cooling device of the invention, and is a schematic diagram of a refrigerant circuit. 1. Cooling device, Ul. 1st condensing unit, U2.-
・Second condensing unit, 40... Machine room, 45...
- Intake port, 46... Air outlet, 47... First compressor, 48... First condenser, 49... Air blower for first condenser, 51... Second compressor, 52・-・Second
Condenser, 53... Second condenser blower, 55.
・Intake space.

Claims (1)

[Claims] 1. Two refrigeration cycles that are independent of each other, a first condensing unit that constitutes a part of one refrigeration cycle and consists of a first compressor, a first condenser, and a blower for the first condenser, and A second condensing unit constitutes a part of the unit and includes a second compressor, a second condenser, and a blower for the second condenser; Equipped with a machine room to store the unit,
The air suction surfaces of the first and second condensers face each other, and the distance between the front sides of the two sets of opposing vertical sides of the air suction surface is greater than the distance between the rear sides. A cooling device that is arranged so that it becomes larger.