JP2578882B2 - Ice making equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to an ice making apparatus that generates sherbet-like ice with an ice making solution to obtain a cold heat source such as cooling.

(Prior Art) Conventionally, as this kind of ice making device, it is disclosed in JP-A-56-2567, and as shown in FIG. 6, an inner tube (X1) through which an ice making solution flows is provided. A coiled heat exchanger that has a rotating drum (X4) equipped with blades (X3) on the outer periphery and that distributes the coolant for cooling the solution between the inner tube (X1) and the outer tube (X2). (X5) is installed to form an evaporator for ice making, which is operated using electric power at midnight, etc., by the cooling action of the heat exchanger (X5) and the ice peeling action of the blades (X3). Then, sherbet-like ice is generated from the solution, and a cooling heat source for daytime supply to the indoor units (X7)... Is stored in a heat storage tank (X6) disposed below.

In FIG. 6, (X8) is a circulation pump that pumps the solution from the liquid region of the heat storage tank (X6) to above the inner pipe (X1).

(Problems to be Solved by the Invention) By the way, in the above, only one ice making evaporator having a pair of inner pipes (X1) and outer pipes (X2) is used. When the amount of ice used is large due to the number of units (X7) installed and the like, the amount of ice making is insufficient, and it is desired to have a multi-stage configuration using a plurality of ice making evaporators.

When an ice making device is constructed using a plurality of evaporators for ice making, depending on the arrangement of each evaporator, pipes connected to the outer pipe of each evaporator and parts having low strength are externally provided. It may be exposed and damage the pipes and parts when transporting or installing the ice making device.

The present invention was invented in view of the above problems,
The purpose is not to damage the pipes and other parts connected to the outer pipe of each evaporator, even though a plurality of evaporators for ice making are used. It is an object of the present invention to provide an ice making device capable of efficiently extracting sherbet-like ice from the outside.

(Means for Solving the Problems) As shown in the embodiment of the drawings, the present invention provides an inner tube (1) in which a rotating drum (4) is provided and through which an ice-making solution flows.
And an outer tube (2) through which a refrigerant for cooling the ice making solution flows is provided. A plurality of ice evaporators (C) are provided, and two evaporators (C) are provided. A pair of evaporators (C, C) are arranged in a horizontal direction, and
Are stacked in multiple stages in the vertical direction, while a refrigerant accumulator (A) is arranged at the upper center of the evaporator (C, C) located at the uppermost tank portion, and the pair of evaporators (C, C) are arranged.
The piping set (S) of the refrigerant flowing through each of the outer pipes (2) is housed in the gap between the pipes, and the inner pipe (1) of each of the evaporators (C, C) is located at the lower layer portion. A solution pipe (P) through which the ice making solution flows is connected in series from the evaporator (C, C) to the uppermost layer.

(Effect) A complex set of evaporators (C, C), which are paired in the horizontal direction, are vertically stacked, and an accumulator (A) is provided at the upper center of the evaporator (C, C) located on the uppermost layer side. ) Is arranged, that is, the gap between the evaporators (C, C) is a space surrounded by high-strength components, and the evaporators (C, C, Since the low-strength piping set (S) connected to the outer pipe (2) of C) is arranged, the piping set (S) may be damaged during transportation or installation of the device. Therefore, the pipe set (S) is reliably protected. Also, a solution pipe (P) is connected in series from the evaporator (C, C) located at the lowermost layer to the inner pipe (1) of each evaporator (C, C) toward the uppermost layer. Therefore, the sherbet-shaped ice produced in the inner pipe (1) of each evaporator (C, C) has a specific gravity difference with respect to the liquid layer in the solution, and the lower side of each evaporator (C, C) The water is efficiently advected from the upper layer to the upper layer, and is reliably taken out from above.

(Example) FIG. 5 shows an evaporator (C) for ice making used in an ice making device.
And an inner tube (1) having a horizontally long shape, and an outer tube (2) hermetically sealed at a predetermined interval between the inner tube (1) and the outer side. At one end in the longitudinal direction of the pipe (1), an inlet (11) for the ice making solution is provided at the lower part of the outer periphery, and at the other end in the longitudinal direction, the outlet (1)
2), a refrigerant inlet (21) is connected to a plurality of locations on the outer periphery lower side of the outer tube (2), and a refrigerant intake (22) is connected to a plurality of locations on the outer periphery upper side. On the other hand, on the inner side of the inner pipe (1), the inner pipe (1)
A rotating drum (4) rotatably supporting a plurality of blades (3) slidably in contact with the inner peripheral surface (1a) of the first drum is rotatably inserted and supported at predetermined intervals.

Thus, a heat exchange chamber (a) for the ice making solution is formed between the inner tube (1) and the rotating drum (4) rotatably supported inside the inner tube (1), The inner pipe (1)
A refrigerant circulation chamber (b) is formed between the heat exchanger (2) and the outer pipe (2) fitted on the outer side of the inner pipe (1). The solution for ice making supplied to (a) is heat-exchanged with the refrigerant circulated in the circulation chamber (b) using the inner peripheral surface (1a) of the inner tube (1) as a heat transfer surface, thereby obtaining the inner solution. Ice is generated on the peripheral surface (1a), and the ice is scraped by the blade (3) with the rotation of the rotary drum (4) to produce sherbet-like ice. ) Through the outlet (12).

The ice making apparatus is constituted by using a plurality of the evaporators (C) for ice making as described above, and the arrangement of each evaporator (C) is as follows.

That is, as apparent from the schematic diagram of FIG. 1, the two evaporators (C) for ice making are horizontally arranged at a predetermined interval to form a pair, and the evaporator ( C,
C) are laminated in three layers at predetermined intervals in the vertical direction, and a refrigerant accumulator (A) is arranged at an upper central portion of the evaporator (C, C) positioned on the uppermost layer side, and the accumulator (A) A pipe set for a refrigerant to flow through the outer pipe (2) of each of the evaporators (C) in a gap (T) formed between the pair of evaporators (C, C) at the lower side of (A). (S) is accommodated.

The refrigerant pipe set (S) includes an inlet header (H1) for supplying a refrigerant into the outer pipe (2) of each of the ice making evaporators (C), and the outer pipe (2). An outlet header (H2) for allowing the refrigerant to flow out is provided, and a space between the inlet header (H1) and the refrigerant inlet (21) provided in the outer pipe (2) of each of the evaporators (C) is provided. Are connected by a branch pipe (B1) having a switching valve (V) in the middle, and a refrigerant outlet (22) provided on the outflow header (H2) and the outer pipe (2) of each of the evaporators (C). ) Are connected via branch pipes (B2).

The pipe set (S) as described above has a small strength and is easily damaged by external pressure or the like. However, the pipe set (S) is connected to the pair of evaporators at the lower side of the refrigerant accumulator (A). Gap (T) formed between (C, C)
In other words, the piping set (S) may be damaged at the time of transportation, installation, or the like by adopting an arrangement in which the outer periphery is housed in the gap (T) surrounded by high-strength components. Is reliably prevented.

Further, the inner pipe (1) of each of the pair of ice making evaporators (C, C) has the ice making in series from the evaporator (C, C) located at the lowermost layer side toward the uppermost layer side. A solution pipe (P) through which a solution is passed is connected, so that sherbet-like ice produced in the inner pipe (1) of each of the evaporators (C, C) is connected to each of the evaporators (P). Thus, the sherbet-shaped ice can be reliably taken out to the outside of each of the evaporators (C, C) by being efficiently transferred from the lower layer to the upper layer.

Specifically, each of the ice making evaporators (C, C) is provided such that the inflow port (11) provided in the inner pipe (1) is downward and the outflow port (12) is upward. Evaporator (C,
C) as well as the inlet (11) and outlet (1
And 2) are connected in series via the solution pipe (P), respectively, and are connected from the lowermost evaporators (C, C) to the uppermost evaporators (C, C). The ice making solution is allowed to flow.

In the embodiment of FIG. 1, the refrigerant accumulator (A)
A compressor (CM), a condenser (CN) and a receiver (R) are connected to the refrigerant outflow side of the compressor, respectively, and the refrigerant compressed by the compressor (CM) is supplied to the condenser (CN) and the receiver (R). And the refrigerant flowing out of the outlet header (H2) is returned to the compressor (CM) through the accumulator (A). ing.

Thus, the ice making device is actually assembled as shown in FIGS. 2 and 3, that is, the receiver (R) is placed on one side in the width direction above the frame (D).
The condenser (CN) is supported on the upper side of the receiver (R), and the compressor (CM) is supported on the upper side of the condenser (CN). On the other side in the width direction, as shown in FIG. 4, the above-mentioned pair of ice making evaporators (C, C) are vertically stacked in three layers, respectively, and these evaporators (C, C) Among them, the accumulator (A) is supported at the upper center of the evaporator (C, C) arranged on the uppermost layer side, and the accumulator (A)
The pipe set (S) is housed and arranged in the gap (T) formed between the evaporator (C) and each of the evaporators (C).

In the embodiment of FIGS. 2 and 3, one pair of the evaporators (C, C) is provided on one side in the length direction and on the upper center side. Corresponding motors (M) are arranged, and the rotational power of each motor (M) is transmitted to a rotary drum (4) provided on each of the evaporators (C, C) via a transmission belt (MB). The rotary drums (4) are driven to rotate.

In the embodiment of FIG. 5, the first and second flanges (13) are respectively provided on both sides of the inner pipe (1) in the longitudinal direction and on the open end side.
(14) and the rotary drum (4)
First and second bearing housings (41) and (42) each integrally containing a bearing and a sealing member are integrally provided on both sides in the length direction of the motor, and the first housing (41) is interlocked to the motor (M). The other end of the inner pipe (1) is engaged with the first housing (41) engaged with the central opening of the first flange (13) while the drive shaft (43) is projected. A plurality of tightening bolts (16) are screwed between the mounting lid (15) disposed in the inner tube and the second flange portion (14), so that the rotation inside the inner pipe (1) is performed. A drum (4) is incorporated, and a heat exchange chamber (a) for the ice making solution is secured between the rotary drum (4) and the inner tube (1).

Further, between the outer tube (2) and the inner tube (1) on both sides in the longitudinal direction of the outer tube (2), the inner and outer tubes (1) and (2) are held at a predetermined interval. A holding member (17) is provided, and the inner and outer tubes (1) and (2) are provided by the holding member (17).
In the meantime, a circulation chamber (b) for the refrigerant is secured.

In FIG. 5, (18) is a liquid level gauge attached to a plurality of locations of the outer pipe (2).

(Effects of the Invention) As described above, in the ice making device according to the present invention, two ice making evaporators (C) are arranged in a pair in the horizontal direction,
In addition, while the pair of evaporators (C, C) are vertically stacked in multiple stages, a refrigerant accumulator (A) is arranged at the upper center of the evaporator (C, C) located at the uppermost layer,
In a gap (T) between the pair of evaporators (C, C), a pipe set (S) of a refrigerant to be circulated through the outer pipe (2) of each of the evaporators (C, C) is stored. A solution pipe () for flowing an ice-making solution in series from the evaporator (C, C) located at the lowermost layer to the uppermost layer side through the inner pipe (1) of each evaporator (C, C). P) is connected, so that the piping set (S) may be damaged when transporting or installing the ice making device, even though the piping set (S) is weak in strength. This ensures that the piping set (S) can be ensured, and that the sherbet-like ice produced in the inner pipe (1) of each of the evaporators (C, C) is separated from the evaporator (C, C). C) Advancing efficiently from the lower layer to the upper layer, the sherbet-like ice can be reliably taken out of the evaporators (C, C). Than it is.

[Brief description of the drawings]

1 is a schematic view of an ice making device according to the present invention, FIG. 2 is a front view of the ice making device, FIG. 3 is a side view thereof, FIG. 4 is a schematic perspective view of a main part, and FIG. FIG. 6 is a partially cutaway sectional view showing the entire structure of an evaporator for use, and FIG. 6 is a piping diagram of a conventional ice making device. (1) Inner pipe (2) Outer pipe (4) Rotary drum (A) Refrigerant accumulator (C) Ice evaporator (P) Solution pipe (S) Pipe Set (T) ... gap

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Akira Kurata, Inventor 1304, Kanaokacho, Sakai-shi, Osaka Daikin Industries, Ltd. Sakai Factory Kanaoka Plant (56) References JP-B-44-18695 (JP, Y1) Patent 142358 (JP, C2)

Claims (1)

(57) [Claims] A rotary drum (4) having a plurality of inner tubes (1) for flowing an ice making solution and an outer tube (2) for flowing a refrigerant for cooling the ice making solution. An ice making device provided with an evaporator (C) for ice making, wherein two evaporators (C) are arranged in a pair in a horizontal direction, and the pair of evaporators (C, C) are arranged in a vertical direction. While stacking in multiple stages, at the top center of the evaporator (C, C) located on the top layer,
A refrigerant accumulator (A) is arranged, and a piping set (S) for refrigerant flowing through the outer pipes (2) is stored in a gap between the pair of evaporators (C, C). A solution pipe (P) through which the ice making solution flows in series from the lowermost evaporator (C, C) to the uppermost layer in the inner pipe (1) of the evaporator (C, C). ) Is connected.