Water-cooled screw refrigeration device and resin production device

Abstract

This application discloses a water-cooled screw refrigeration device and a resin production apparatus. The water-cooled screw refrigeration device includes an air pump, an evaporator, a compressor, an oil separation system, a first pipe, a second pipe, a third pipe, and a condenser. The air pump is connected to the evaporator; the air pump is also connected to the evaporator via the second pipe; the air pump is connected to the condenser via the third pipe; the condenser is connected to the evaporator via the first pipe; the evaporator is connected to the compressor; the compressor is connected to the oil separation system; and the oil separation system is connected to the condenser. This application can be widely applied in the field of resin production technology.

Description

Technical Field

[0001] This application relates to the field of resin production technology, and in particular to a water-cooled screw refrigeration equipment and resin production apparatus. Background Technology

[0002] Currently, PVB resin powder production involves dissolving raw materials at high temperatures, cooling and filtering them before feeding them into the reactor. However, the reactor requires continuous cooling before feeding to ensure the material doesn't overheat during the reaction. Ethylene glycol chilled water circulates through the reactor jacket for heat exchange with the material. However, the refrigeration equipment in this system suffers from low efficiency and high energy consumption. When multiple reactors are under heavy cooling loads, this causes significant temperature deviations in the ethylene glycol chilled water, affecting the cooling time of the reactors and the temperature rise of the material during the reaction, leading to non-compliance. Therefore, there are still technical problems that need to be solved in this field. Utility Model Content

[0003] The purpose of this application is to at least partially solve one of the technical problems existing in the prior art.

[0004] Therefore, one objective of this application is to provide a water-cooled screw refrigeration device and a semiconductor device. This water-cooled screw refrigeration device and semiconductor device can avoid the mechanical stress generated by cutting from directly acting on the assembly area base island and damaging the chip on the assembly area base island. This can improve product stability, increase product yield, and save manpower and material resources.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted in this application embodiment includes: a water-cooled screw refrigeration device, comprising: an air pump, an evaporator, a compressor, an oil separation system, a first pipe, a second pipe, a third pipe, and a condenser; the air pump is connected to the evaporator; the air pump is also connected to the evaporator through the second pipe; the air pump is connected to the condenser through the third pipe; the condenser is connected to the evaporator through the first pipe; the evaporator is connected to the compressor; the compressor is connected to the oil separation system; and the oil separation system is connected to the condenser.

[0006] In addition, the water-cooled screw refrigeration device according to the above embodiments of this utility model may also have the following additional technical features: Furthermore, in this embodiment of the application, the device further includes a solenoid valve, which is disposed on the second pipe and the third pipe.

[0007] Furthermore, in this embodiment of the application, the device further includes an electronic expansion valve, which is disposed on the first pipe.

[0008] Furthermore, in this embodiment of the application, the oil separation system includes an oil separator.

[0009] Furthermore, in this embodiment of the application, the evaporator is a horizontal shell-and-tube evaporator.

[0010] Furthermore, in this embodiment of the application, the compressor is a screw compressor.

[0011] On the other hand, embodiments of this application also provide a resin production apparatus, including a water-cooled screw refrigeration device as described in any of the preceding claims.

[0012] The advantages and beneficial effects of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application: This application can achieve heat exchange through a compressor, condenser, and evaporator. At the same time, this application can reduce the cooling load and reduce the temperature deviation of ethylene glycol chilled water through the condenser, thereby improving the cooling efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a water-cooled screw refrigeration device in a specific embodiment of this utility model. Detailed Implementation

[0014] The following detailed description, in conjunction with the accompanying drawings, illustrates the principles and processes of the water-cooled screw refrigeration equipment in this utility model.

[0015] Currently, the production of PVB resin powder involves dissolving raw materials at high temperatures, cooling and filtering them before feeding them into the reactor. However, the reactor needs to be continuously cooled before feeding to ensure that the material does not heat up during the reaction. Ethylene glycol chilled water circulates through the reactor jacket to exchange heat with the material. However, the refrigeration equipment in the system has problems with low efficiency and high energy consumption. When the cooling load of multiple reactors is high, it causes large temperature deviations in the ethylene glycol chilled water, affecting the cooling time of the reactor and the temperature rise of the material during the reaction, resulting in non-compliance.

[0016] Reference Figure 1 This application provides a water-cooled screw refrigeration device. The water-cooled screw refrigeration device may include at least an air pump 6, an evaporator 2, a compressor 1, an oil separation system 5, a first pipe 3, a second pipe 8, a third pipe 7, and a condenser 10; the air pump 6 is connected to the evaporator 2; the air pump 6 is also connected to the evaporator 2 via the second pipe 8; the air pump 6 is connected to the condenser 10 via the third pipe 7; the condenser 10 is connected to the evaporator 2 via the first pipe 3; the evaporator 2 is connected to the compressor 1; the compressor 1 is connected to the oil separation system 5; and the oil separation system 5 is connected to the condenser 10.

[0017] The compressor is a semi-hermetic direct-drive screw compressor, with the rotor directly driven by a two-stage hermetic squirrel-cage induction motor. This screw compressor employs a variable-volume design; refrigerant from the evaporator is introduced through the suction port at the end of the motor, the gaseous portion enters the motor and cools it, then enters the rotor chamber, is compressed, and directly enters the discharge chamber. The compressor housing does not directly contact the rotor; oil is injected along the bottom of the compressor rotor, filling the gap between the two rotors and the compressor housing. This not only provides lubrication for the rotors but also, more importantly, seals the gap between the rotor and the compressor housing. Because these internal components are well-sealed, gas leakage between the high and low pressure chambers is limited, thereby improving compressor efficiency.

[0018] The evaporator adopts a horizontal shell-and-tube (falling film) evaporator, which consists of a carbon steel shell and multiple high-efficiency heat exchange copper tubes. The copper tubes use a threaded design to increase the contact area and optimize the heat transfer efficiency. Ethylene glycol and liquid refrigerant circulate inside and outside the copper tubes respectively for heat exchange.

[0019] The condenser adopts a horizontal shell-and-tube water-cooled condenser, which consists of a carbon steel shell and multiple high-efficiency heat exchange copper tubes. The copper tubes use a threaded design to increase the contact area and optimize the heat transfer efficiency. Cooling water and gaseous refrigerant circulate inside and outside the copper tubes respectively for heat exchange.

[0020] The oil separation system includes two oil separators. Each oil separator is a straight cylindrical body with a side inlet. The refrigerant and oil mixture entering the oil separator is dispersed by centrifugal force, with the oil flowing along the cylindrical wall of the oil separator to the bottom and being discharged into an oil tank located between the evaporator and condenser.

[0021] The air pump is installed under the evaporator and is a four-hole cylinder controlled by two solenoid valves. The pump draws the accumulated oil in the evaporator back to the compressor through the filter at regular intervals.

[0022] The equipment in this application also includes a start-up control cabinet. The start-up control cabinet consists of electrical equipment such as a PLC, frequency converter, sensors, and a Symbio800 programmable controller.

[0023] Furthermore, referring to Figure 1 In some embodiments of this application, the device further includes a solenoid valve 9, which is disposed on the second pipe and the third pipe.

[0024] Furthermore, in some embodiments of this application, reference is made to... Figure 1 The equipment also includes an electronic expansion valve 4, which is installed on the first pipeline. The electronic expansion valve can be controlled by the Symbi800 system controller to achieve precise regulation of the refrigerant flow, thereby achieving the refrigeration load required by the refrigeration unit.

[0025] Furthermore, in some embodiments of this application, the oil separation system includes an oil separator.

[0026] Furthermore, in some embodiments of this application, the number of separators is two.

[0027] Furthermore, in some embodiments of this application, the evaporator is a horizontal shell-and-tube evaporator.

[0028] Furthermore, in some embodiments of this application, the compressor is a screw compressor.

[0029] Specifically, the working principle of a water-cooled screw refrigeration unit is as follows: In the refrigeration cycle, the ethylene glycol solution from the evaporator at -5°C is pumped to the heat exchange equipment in the workshop. When the water-cooled screw refrigeration equipment starts up, the refrigerant gas exchanges heat with the ethylene glycol solution and then flows back to the compressor cycle. The high-temperature and high-pressure refrigerant at the compressor outlet enters the condenser. The cooling water in the condenser absorbs the heat of the refrigerant gas, causing it to condense into a high-pressure saturated refrigerant liquid. After passing through the throttling device, it enters the shell side of the evaporator and exchanges heat with the ethylene glycol solution on the tube side, cooling it to -5°C. The vaporized low-temperature and low-pressure refrigerant gas then flows back to the compressor suction port to participate in the refrigeration cycle.

[0030] Furthermore, this application also provides a resin production apparatus, including the water-cooled screw refrigeration equipment described in any of the preceding claims.

[0031] It should be noted that the contents of the above-described water-cooled screw refrigeration equipment embodiments are all applicable to this semiconductor device embodiment. The specific functions implemented by this semiconductor device embodiment are the same as those of the above-described water-cooled screw refrigeration equipment embodiments, and the beneficial effects achieved are also the same as those achieved by the above-described water-cooled screw refrigeration equipment embodiments.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "switching" should be interpreted broadly, for example, it can mean transformation or conversion; for those skilled in the art, the specific meaning of the above term in this utility model can be understood according to the specific circumstances.

[0033] In this specification, the description of referenced terms refers to a specific structure or feature described in connection with an embodiment or example that is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

[0035] The above is a detailed description of the preferred embodiments of this application, but this application is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A water-cooled screw refrigeration device, characterized in that, include: The system includes an air pump, an evaporator, a compressor, an oil separation system, a first pipe, a second pipe, a third pipe, and a condenser; the air pump is connected to the evaporator; the air pump is also connected to the evaporator via the second pipe; the air pump is connected to the condenser via the third pipe; the condenser is connected to the evaporator via the first pipe; the evaporator is connected to the compressor; the compressor is connected to the oil separation system; and the oil separation system is connected to the condenser.

2. The water-cooled screw refrigeration equipment according to claim 1, characterized in that, The device also includes a solenoid valve, which is disposed on the second pipe and the third pipe.

3. The water-cooled screw refrigeration equipment according to claim 1, characterized in that, The device also includes an electronic expansion valve, which is disposed on the first pipe.

4. The water-cooled screw refrigeration equipment according to claim 1, characterized in that, The oil separation system includes an oil separator.

5. The water-cooled screw refrigeration equipment according to claim 4, characterized in that, The number of separators is two.

6. The water-cooled screw refrigeration equipment according to claim 1, characterized in that, The evaporator is a horizontal shell-and-tube evaporator.

7. The water-cooled screw refrigeration equipment according to claim 1, characterized in that, The compressor is a screw compressor.

8. A resin production apparatus, characterized in that, Includes the water-cooled screw refrigeration equipment as described in any one of claims 1-7.

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