A direct-cooling ice maker water de-pressurization and ice removal device and direct-cooling ice maker

Abstract

The utility model relates to the technical field of refrigeration equipment, more particularly to a direct-cooling ice maker water de-pressurization ice removing device and direct-cooling ice maker. The ice removing device is installed in the direct-cooling ice maker, the direct-cooling ice maker includes an evaporator, an evaporative condenser and a high-pressure air inlet pipeline, includes evaporator high-pressure air inlet branch pipeline, it is introduced from evaporative condenser high-pressure air inlet pipeline, and is equipped with evaporator high-pressure air inlet branch pipeline valve. Let the high-pressure part of evaporative cold high-pressure air inlet pipeline hot gas enter the evaporator, improve the temperature of evaporator, heat to the ice mould, cooperate ice removing water ice removing simultaneously, reduce the ice removing time, improve the efficiency, reduce the ice removing time. Still can reduce the compressor exhaust section pressure, be favorable to the start of next ice making compressor.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, specifically to a water depressurization and de-icing device for a direct-cooling ice maker and a direct-cooling ice maker. Background Technology

[0002] Direct-cooling ice makers use direct heat exchange between refrigerant and water to produce ice, resulting in high ice-making efficiency. During ice removal, a screw-type ice removal mechanism is often used, where a screw raises and lowers the ice plate to remove ice, as shown in CN214581964U - A screw-lifting ice removal mechanism for a direct-cooling ice maker. In the ice removal process, some existing solutions use higher-temperature de-icing water to heat the ice mold for auxiliary ice removal, improving efficiency. However, because the temperature of the de-icing water is not very high and heat transfer is slow, the efficiency of this method still needs improvement. Utility Model Content

[0003] The main purpose of this invention is to provide a water depressurization and de-icing device for a direct-cooling ice maker, so as to solve the problem of slow de-icing in the existing direct-cooling ice maker.

[0004] To achieve the above objectives, according to one aspect of this utility model, a water-based depressurization and de-icing device for a direct-cooling ice maker is provided, installed in the direct-cooling ice maker, which includes an evaporator, an evaporative condenser, and a high-pressure air inlet pipeline, characterized in that it includes:

[0005] The high-pressure air inlet branch line of the evaporator is introduced from the high-pressure air inlet line of the evaporative condenser and is equipped with a valve for the high-pressure air inlet branch line of the evaporator.

[0006] In a further improvement, the high-pressure air inlet branch valve of the evaporator includes a solenoid valve and shut-off valves located on both sides of the solenoid valve.

[0007] In a further improvement, the high-pressure air inlet branch line of the evaporator is located at the outlet line of the oil separator, extending from the high-pressure air inlet line of the evaporative condenser.

[0008] This invention introduces high-pressure gas into a low-pressure system, which increases the temperature inside the evaporator. The pressure determines the temperature; the pressure controls the opening and closing of the gas-introducing solenoid valve. When the pressure inside the evaporator reaches the corresponding ice-melting temperature, the gas-introducing solenoid valve closes; it opens when water is de-icing and closes again after reaching the required pressure.

[0009] This utility model provides a direct-cooling ice maker, including the aforementioned water depressurization and de-icing device for a cold-type ice maker.

[0010] Further improvements include a liquid receiver connected to a refrigerant gas supplying high-pressure, ambient-temperature gas to the evaporator after being evaporated and pressurized.

[0011] A further improvement is that the circuit of the evaporative condenser is equipped with a vapor-liquid separator.

[0012] The application of the technical solution of this utility model has the following technical effects:

[0013] By allowing hot gas from the high-pressure section of the evaporative cooling high-pressure inlet pipe to enter the evaporator, the evaporator temperature is increased, heat is transferred to the ice mold, and de-icing water is used simultaneously to reduce de-icing time, improve efficiency, and shorten the de-icing time. It also reduces the compressor discharge pressure, which is beneficial for the next start-up of the ice-making compressor. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0015] Figure 1 A schematic diagram of the structure of the water depressurization and de-icing device for a direct-cooling ice maker according to the present invention is shown.

[0016] The above figures include the following reference numerals:

[0017] 1. Evaporator;

[0018] 2. Evaporative condenser;

[0019] 3. Evaporative cooling high-pressure air inlet pipeline;

[0020] 4. High-pressure air inlet branch line for evaporator;

[0021] 5. Gas venting valve assembly;

[0022] 51. Solenoid valve;

[0023] 52. Shut-off valve. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0025] The first embodiment of this utility model provides a water-based depressurization and de-icing device for a direct-cooling ice maker, as shown in Figure 1. The water-based depressurization and de-icing device is installed in a direct-cooling ice maker system, which employs a refrigeration system with an economizer. This system includes an evaporator 1, an evaporative condenser 2 (i.e., evaporative cooling), and an evaporative cooling high-pressure inlet pipe 3. The evaporator 1 is integrated with the ice mold, and it absorbs heat from the ice mold to complete the ice-making process. This device is a branch line extending from the evaporative cooling high-pressure inlet pipe 3 to the evaporator 1. This branch line is called the evaporator high-pressure inlet branch pipe 4, and it is a newly added pipe to the existing system. The evaporator high-pressure inlet branch pipe 4 is equipped with a cross-flow valve group 5, which includes a solenoid valve 51 (model EVR32), and a shut-off valve 52 installed on each side of the solenoid valve 51.

[0026] Working principle:

[0027] The hot gas from the high-pressure section of the evaporative cooling high-pressure inlet pipe 3 is allowed to enter the evaporator 1, and at the same time, water de-icing is carried out, which reduces the de-icing time, lowers the pressure of the compressor exhaust section, and facilitates the start-up of the ice-making compressor next time.

[0028] High-pressure gas is introduced into the low-pressure system to increase the temperature inside the evaporator. The pressure determines the temperature. The pressure controls the opening and closing of the gas-introducing solenoid valve. When the pressure inside the evaporator reaches the corresponding ice-melting temperature, the gas-introducing solenoid valve is closed. It is opened when the water is de-icing and closed after reaching the required pressure. Example

[0029] The first embodiment of this utility model provides a direct-cooling ice maker, including the water depressurization and de-icing device in Embodiment 1.

[0030] like Figure 1 As shown, the direct-cooling ice maker includes an evaporator 1 and an evaporative condenser 2 (evaporative cooling). The evaporator 1 is integrated with the ice mold. A branch line leading from the evaporative cooling high-pressure inlet pipe 3 to the evaporator 1 is called the evaporator high-pressure inlet branch pipe 4. The evaporator high-pressure inlet branch pipe 4 is equipped with a cross-flow valve group 5. The liquid outlet of the evaporative condenser 2 is connected to a liquid receiver. The liquid receiver is connected to a high-pressure, low-temperature refrigerant that is pressurized by the machine and supplies high-pressure, low-temperature refrigerant to the evaporator 1. The refrigerant in the evaporator 1 evaporates, absorbing heat from the ice mold to perform the ice-making process.

[0031] During de-icing, the supply of low-temperature refrigerant to evaporator 1 is stopped, and the gas venting valve group 5 is opened to allow hot gas from the high-pressure section to enter evaporator 1, raising the temperature of evaporator 1 and transferring heat to the ice mold. Simultaneously, de-icing water is used for de-icing. After multiple experiments, the improved process has been shown to reduce de-icing time and improve efficiency.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water-based depressurization and de-icing device for a direct-cooling ice maker, installed in the direct-cooling ice maker, the direct-cooling ice maker comprising an evaporator, an evaporative condenser, and a high-pressure air inlet pipeline, characterized in that... The water depressurization and de-icing device includes: The high-pressure air inlet branch line of the evaporator is led out from the high-pressure air inlet line of the evaporative condenser, directed to the evaporator, and equipped with a valve for the high-pressure air inlet branch line of the evaporator.

2. The water-cooling pressurized de-icing device for a direct-cooling ice maker as described in claim 1, characterized in that, The valve in the high-pressure air inlet branch line of the evaporator includes a solenoid valve and shut-off valves located on both sides of the solenoid valve.

3. The water-cooling pressurized de-icing device for a direct-cooling ice maker as described in claim 1, characterized in that, The high-pressure air inlet branch line of the evaporator is led out from the high-pressure air inlet line of the evaporative condenser and is located in the outlet line of the oil separator.

4. A direct-cooling ice maker, characterized in that, Includes the water depressurization and de-icing device for a cold ice maker as described in any one of claims 1 and 2.

5. The water depressurization and de-icing device for a direct-cooling ice maker as described in claim 3, characterized in that, It also includes a liquid receiver, which is connected to supply high-pressure, ambient-temperature refrigerant gas to the evaporator after being pressurized by a machine.

6. The water depressurization and de-icing device for a direct-cooling ice maker as described in claim 3, characterized in that, The circuit of the evaporative condenser is equipped with a vapor-liquid separator.

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