JPS61280367A - Ice-loss compensator for flow-down type ice machine - 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 (a) Field of Industrial Application The present invention relates to a flow-down ice maker that uses heat sensitivity of water to de-ice ice frozen on an ice-making member, and particularly relates to a flow-down ice maker that uses the heat sensitivity of water to de-ice ice frozen on an ice-making member. This invention relates to a de-icing compensator that compensates for.

(b) Conventional technology As a conventional falling ice making machine that uses the heat sensitivity of water to de-ice the ice frozen on the ice making plate, for example,
Publication No. 7675 (see FIG2b) and Utility Model Application No. 58-1
No. 90j71 exists.

P] Problems to be Solved by the Invention Although the ice making machines of the prior art have different structures, when the ice making operation is finished, the temperature of the ice making plate is increased by the heat sensitivity of the water, and the ice that has frozen on the ice making plate is removed. However, in regions with harsh winters or cold temperatures, the temperature of the deicing water becomes extremely low, making it impossible to increase the temperature of the ice making plate, resulting in a markedly longer deicing time, or in the worst case scenario, the ice making plate will dry out. This played a role in the problem of the ice not detaching.

B) Means for Solving the Problems In order to solve the problems of the prior art, the present invention provides a temperature detection device for directly or indirectly detecting the temperature of water for deicing, and a device for heating an ice making member. A hot gas circuit for the refrigeration system is installed, and when the temperature detection device detects a water temperature lower than a predetermined temperature, the hot gas circuit is activated to de-ice the ice that has frozen on the ice making components using a combination of hot gas and water. This is a de-icing compensator configured to perform the following steps.

(e) Effects According to the above configuration, when the temperature detection device detects that the deicing water temperature is lower than a predetermined temperature, the hot gas circuit is activated to heat the ice making member using both real gas and deicing water. Thereby, even when the temperature of the deicing water is low, the ice that has frozen on the ice making member is reliably removed from the ice making member.

(f) Example Fig. 1 is a system diagram of the down-flow ice maker of the present invention, Fig. 2 is a perspective view of the main parts of the down-flow ice maker, and Fig. 3 is A of Fig. 2.
-A sectional view, Figure 4 is a perspective view showing the relationship between the cooling pipe and buttons, and Figure 5 is an explanatory diagram of the arrangement of buttons with respect to the cooling pipe. It is constructed by connecting a condenser (3) that is forcedly air-cooled by air, an expansion valve (4) as a pressure reducing device, and a cooling pipe (5), and an additional circuit that bypasses the condenser (3). The bypass pipe (6) and the bypass pipe (6)
) is equipped with a hot gas solenoid valve (7) connected to the hot gas solenoid valve (7). The cooling pipe (5) has a meandering shape and runs horizontally.
On the negative side of the cooling pipe (5), there are a number of buttons (8A
) are arranged in a heat exchange relationship with the cooling pipe (5), and on the other side, a number of buttons (8B) similar to the buttons (8) arranged on one side are arranged in a heat exchange relationship with the cooling pipe (5). be done. In this case, the buttons (8A) arranged on the - side and the buttons (8B) arranged on the other side are arranged alternately so that they do not overlap. Therefore, these buttons (8
A) and (8B) are fitting grooves (9A) and (9B) having an arcuate cross section on the end surface that makes surface contact with the approximately semicircumference of the cooling pipe (5).
It has locking flange parts (10A) and (10B) in the middle part.
, and a flat circular ice-making surface (11A) and (
11B), and furthermore, a V-groove (1) forming a gap along the cooling pipe (5) at the bottom of the fitting grooves [9A] and (9B).
2A) and (12B).

Thus, the cooling pipe (5) is vertically shaped with a space on both sides.
That is, the pair of water plates (13A) and (13B) installed approximately vertically are made of the same material as the buttons (8A) and (8B) or made of stainless steel, for example, which has a lower thermal conductivity than the buttons (8A) and (8B). The button has a flat plate shape, has barring parts (14A) and (14B) inward with openings in the parts facing all the buttons (8A) and (8B), and is exposed by fitting into these openings. (8A) and (8
The ice-making surfaces (IIA) and (11B) of B) are equipped with water plates (13
A) and (13B) are located in the flowing water surface and road surface conditions. In addition, the flow plates (13A) and (13B) are provided with seats 15A) and (15B) at appropriate locations, and when they are connected at these parts with rivets α6), the burring parts (14A) and (14B) is the locking flange (10
A) and (IOB), press buttons (8A) and (8
B) firmly clamps the cooling pipe (5). Then, the vertical and horizontal openings formed by the flow plates (13A) and (13B) are closed by cover α force made of rubber or resin with extremely poor thermal conductivity, and this causes the flow plates (
A room (I81) is formed by the cover (13A) and (13B) and the cover (17).The cover (an upper water guide part (17A) and a lower water guide part (17A) each having a steeple shape at the top and bottom) 17B), of which the lower water guide part (17B) is provided.
In B), a water supply passage rule is formed as particularly shown in FIG.

Next, to explain the water system, a9 is a running water plate (13
A) and (13B) Water spout (19) that sprays water toward the back side
A) and (19B) are the water sprinklers for initial water supply, and are arranged above the room marked a.
■ Water supply pipe (20) extending outward from the cover (171)
is connected to a water source via a water supply solenoid valve (211. Slightly below this water sprinkler (19), water is sprinkled on a water plate (13A) and (13B) in consideration of low water supply pressure.
A water guide plate (221) is provided so as to flow down the back surface of the water guide plate (221). (231 is a water sprinkler for ice making which has water sprinkling ports (23A) and (23B) facing the upper water guide portion (17A). Yes, there is a water pipe extending from the water sprinkler (231).
24J is connected to the discharge side of a pump device (5) disposed in a water storage tank (26) communicating with a gutter (251) that collects water falling from the lower water guide section (17B). The water that overflows from the overflow pipe (C) is collected in the water storage tank (261). (2 Dark main water storage tank G2
6) is the overflow pipe. (30) is a temperature sensor for controlling ice making operation and deicing operation. (33
1 is a thermostat as a temperature sensing device that detects the outlet temperature of the water supply pipe (20), and when the deicing water temperature is lower than a predetermined temperature (for example 10°C) during deicing operation, the electric compressor +I
+ and operate the hot gas solenoid valve (7).

Next, the present invention will be explained in detail. First, the water supply solenoid valve (21
1 opens to start the initial water supply operation. In this case, the water supply pipe (
20) to the water sprinkling port (19A) and (19
The water sprinkled from B) passes through the room a & from the water supply passage 01) formed in the lower water guide part (17B) to the gutter CI! 51
When the water storage tank (26) is supplied with a fixed amount of water, the water supply solenoid valve Cυ closes to end the water supply.The electric compressor (1) then operates to cool the water. Low-temperature refrigerant gas is circulated through the pipe (5), and at the same time, the pump device □□□ is activated, and the water in the water storage tank (26) is transferred from the water conduit pipe (2410 (23A) A to the upper water guide section. (17A) and water plate (13A) respectively.
) and (13B).

In this way, the ice-making water flowing down the water plates (13A) and (13B) is cooled by heat conduction from the cooling pipe (5).
A) and (IIB) are gradually frozen, and the unfrozen ice-making water falls from the lower water guide part (17B) to the gutter (2!5), returns to the water storage tank (26), and returns to the water flow plate ( 13A)
and circulated to the top of (13B). Therefore, the ice making surfaces (IIA) and (I
As shown in Figure 3, lens-shaped ice cubes eventually freeze in IB), and when the temperature sensor detects the growth of such lens ice C32), the electric compressor (1) stops. The circulation of low-temperature refrigerant to the cooling pipe (5) is stopped, and at the same time the pump device (5) is also stopped and the flow plates (], 3A) and (13) are stopped.
Stop watering to B) and end the ice making operation.

When the ice-making operation is finished, the water supply solenoid valve Owl opens and de-icing operation starts, but at this time the thermostat) (
33) detects a deicing water temperature higher than a predetermined temperature, the hot gas circuit does not operate and deicing operation is performed using deicing water alone. That is, water sprinkled from the water sprinkling ports (19A) and (19B) of the water sprinkler (191) via the water supply pipe (20) flows through the water flow plate (
13A) and (13B), and due to the heat sensitivity of the water, the buttons (8A) and (8B) and the water plate (
13A) and (13B) and press button (8).
A) and (8B) ice making surface (], LA) and C11B)
The frozen lens water (3 hot water) is placed on the ice-making surface (11A) and C
11B).

On the other hand, if the thermostat 09 detects a deicing water temperature lower than the predetermined temperature, the electric compressor (1) will continue operating from the ice making operation, the hot gas solenoid valve (7) will open, and the cooling pipe (5) will open. ), the de-icing operation is performed using a combination of hot gas and water, and the temperature of the buttons (8A) and (8B) and the water plates (13A) and (13B) are quickly raised, so the temperature of the de-icing water is increased. reliably compensate for water withdrawal when the temperature is low.

When the temperature sensor (30) detects the removal of ice t3, the ice removal operation is ended and the next cycle of ice making operation is started.

In the present invention, although a thermostat is used as the temperature detection device in the above embodiment, a semiconductor temperature detection device such as a thermistor may also be used, and the detection portion is not limited to the outlet of the water supply pipe. Any temperature may be detected as long as the state of the deicing water temperature can be detected. The invention can also be effectively implemented in ice makers of the type described in the prior art, as well as in other down-flow ice makers.

(G) Effects of the Invention As described above, the present invention performs deicing operation by using water and hot gas together when the deicing water temperature is low, so the hot gas facilitates the deicing operation and the deicing water temperature is low. This has the advantage of being able to reliably compensate for the detachment of ice from the ice making surface even in the case of ice making.

Further, when the temperature of the deicing water is high, the electric compressor and the hot gas solenoid valve do not operate unnecessarily, thereby preventing wasteful power consumption.

[Brief explanation of the drawing]

Figure 1 is a system configuration diagram of the down-flow ice maker of the present invention, Figure 2
The figure is a perspective view of the main parts of the down-flow ice maker, Figure 3 is a sectional view taken along line A-A in Figure 2, Figure 4 is a perspective view showing the relationship between the cooling pipe and the button, and Figure 5 is the button for the cooling pipe. FIG. (1)...Electric compressor, (5)...Cooling pipe,
(6)...Hot gas bypass pipe, (7)...
Hot gas solenoid valve, (8A), [8B]...button,
(11A), (l IB)...Ice making surface, (13
A), (13B)...Water plate, (20)...Water supply pipe, 03...Thermostat (temperature detection device).

Claims (1)

[Claims] 1. In a flow-down ice maker that uses the heat sensitivity of water to de-ice the ice frozen on the ice-making member, a temperature detection device that directly or indirectly detects the temperature of the de-icing water and a temperature detection device that heats the ice-making member are provided. A refrigeration system hot gas circuit is installed to
When the temperature detection device detects a water temperature lower than a predetermined temperature, the hot gas circuit is operated to perform deicing operation using a combination of hot gas and water. Ice compensation device.