Open-type screw compressor unit

Abstract

The open-type screw compressor unit comprises a compressor, a motor, a servo cover, an oil separator, an oil filter, a control cabinet, an economizer, an oil cooler and a bottom frame, and the bottom frame is installed between supporting legs of the oil separator; the compressor is connected with the motor through the servo cover and is mounted above the oil separator; the control cabinet is arranged on one side of the oil separator and electrically connected with the compressor, the motor and the oil separator. An oil filter is arranged below the oil separator; the economizer is arranged above the underframe; and the oil cooler is arranged above the underframe. The design of redundant double oil filters is adopted, online filter element replacement is achieved through the bypass valve, filter element maintenance can be completed without shutdown of equipment, production interruption caused by oil way maintenance is effectively avoided, and the continuous operation duration and the operation and maintenance efficiency of the system are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment, and in particular to an open-type screw compressor unit. Background Technology

[0002] In the field of refrigeration equipment, a structural design that combines an economizer and an oil cooler is often used to improve system performance and energy efficiency. However, in existing technologies, the economizer is placed on top of the oil cooler. This layout significantly limits the overall structural design of the equipment, making it difficult to flexibly adapt to different application scenarios and space requirements. Furthermore, the economizer and oil cooler typically employ a shell-and-tube structure, which results in a larger refrigerant charge, increasing operating costs and overall equipment weight, causing numerous inconveniences during installation and transportation.

[0003] Furthermore, the compressor, as a core component of refrigeration equipment, is crucial to the operation of the equipment due to its performance and structural design. Currently, most refrigeration equipment uses traditional compressors, which have relatively many oil supply lines. During equipment installation, the numerous pipe connections make the installation process cumbersome and complex, consuming a lot of time and labor costs. Moreover, too many pipe connection points also lead to an increase in leakage points, reducing the stability and reliability of equipment operation, and increasing maintenance costs and the risk of failure.

[0004] Meanwhile, existing refrigeration equipment typically only has a single oil filter design. When the oil filter needs to be repaired or the filter element replaced, the entire refrigeration equipment must be shut down. This not only interrupts the refrigeration operation and affects production or use, but also reduces the working efficiency of the equipment and causes unnecessary economic losses.

[0005] In summary, existing refrigeration equipment has many shortcomings in terms of structural design, installation and maintenance, and urgently needs to be improved and optimized. Utility Model Content

[0006] To achieve the above objectives, this application proposes an open-type screw compressor unit, comprising: a compressor, a motor, a servo housing, an oil separator, an oil filter, a control cabinet, an economizer, an oil cooler, and a base frame. The base frame is installed between the legs of the oil separator. The compressor is connected to the motor through the servo housing and is installed above the oil separator. The control cabinet is located on one side of the oil separator and is electrically connected to the compressor, the motor, and the oil separator. An oil filter is installed below the oil separator. The economizer is located above the base frame. The oil cooler is located above the base frame.

[0007] Through the above technical solution, the main components such as compressor, motor, oil separator, oil filter, control cabinet, economizer, and oil cooler are reasonably installed on the base frame, forming an integrated system.

[0008] It also includes: intake valve assembly and exhaust valve assembly; the compressor intake port is connected to the intake valve assembly, and the exhaust valve assembly is connected to the oil separator, thus forming a gas passage of "intake valve assembly-compressor-oil separator-exhaust valve assembly".

[0009] Specifically, the economizer is a plate-shell type economizer.

[0010] Specifically, the oil cooler is a plate-and-shell type oil cooler.

[0011] Through the above technical solutions, an innovative plate-and-shell heat exchanger design is applied. Through a highly efficient and compact heat transfer structure, the refrigerant charge is significantly reduced, and the equipment weight is reduced simultaneously. This not only reduces the cost of refrigerant use, but also optimizes the convenience of transportation and installation and the storage space occupied.

[0012] It also includes: an oil supply pipe assembly; the oil supply pipe assembly is installed on one side of the oil separator, and the oil filter, oil cooler and compressor are connected through the oil supply pipe assembly to form an oil circuit channel of "oil separator-oil cooler-oil filter-oil supply pipe assembly-compressor".

[0013] By employing the above-mentioned technical means, the compressor with integrated oil circuit is used to reduce the number of external oil pipeline connections, simplify the installation process, and reduce the risk of failure caused by loose or leaking pipeline interfaces. This results in more stable operation with fewer connection points and extends the equipment's lifespan.

[0014] Specifically, the oil filter includes: a first oil filter and a second oil filter; the first oil filter and the second oil filter are arranged side by side below the oil separator, and a bypass valve is provided on the first oil filter and the second oil filter respectively.

[0015] Through the aforementioned technical means, a redundant dual-oil filter design is adopted, and online filter element replacement is achieved through a bypass valve. Filter element maintenance can be completed without stopping the equipment, effectively avoiding production interruptions caused by oil circuit maintenance and significantly improving the system's continuous operating time and maintenance efficiency. It also includes a throttling component; the throttling component is installed on the base frame and connected to the economizer, forming a compressor air supply channel of "throttling component - economizer - compressor".

[0016] Compared with the prior art, the advantages of this application are:

[0017] (1) The new generation of open screw compressors is adopted, and most of the oil supply lines are integrated inside the compressor body, thereby reducing the external oil pipe passages, simplifying the installation process, and reducing the risk of failure caused by leakage;

[0018] (2) It adopts a dual oil filter design, eliminating the need for machine shutdown for maintenance;

[0019] (3) A lightweight plate-shell heat exchange structure is adopted, which greatly reduces the amount of refrigerant charged. Attached Figure Description

[0020] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of this application. Other embodiments and many anticipated advantages of these embodiments will be readily recognized as they become better understood through reference to the following detailed description. Elements in the drawings are not necessarily to scale. The same reference numerals refer to corresponding similar parts.

[0021] Figure 1 This is a front view of an open-type screw compressor unit according to an embodiment of this application;

[0022] Figure 2 This is a top view of an open-type screw compressor unit according to an embodiment of this application;

[0023] Figure 3 This is a side view of an open-type screw compressor unit according to an embodiment of this application.

[0024] The meanings of the numbers in the diagram are as follows: 1. Compressor; 2. Servo cover; 3. Motor; 4. Oil separator; 5. Exhaust valve assembly; 6. Oil filter; 7. Control cabinet; 8. Intake valve assembly; 9. Economizer; 10. Oil cooler; 11. Oil supply pipe assembly; 12. Throttling assembly. Detailed Implementation

[0025] In the following detailed description, reference is made to the accompanying drawings, which form part of the detailed description and illustrate illustrative specific embodiments in which the present application may be practiced. In this regard, directional terms such as “top,” “bottom,” “left,” “right,” “up,” “down,” etc., are used with reference to the orientation of the described figures. Because components of the embodiments can be positioned in several different orientations, directional terms are used for illustrative purposes and are by no means limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present application. Therefore, the following detailed description should not be taken in a limiting sense, and the scope of the present application is defined by the appended claims.

[0026] like Figures 1 to 3 The embodiment shown includes an open-type screw compressor unit comprising: a compressor 1, a motor 3, a servo housing 2, an oil separator 4, an oil filter 6, a control cabinet 7, an economizer 9, an oil cooler 10, and a base frame. The base frame is mounted between the legs of the oil separator 4. The compressor 1 is connected to the motor 3 via the servo housing 2 and is mounted above the oil separator 4. The control cabinet 7 is located on one side of the oil separator 4 and is electrically connected to the compressor 1, the motor 3, and the oil separator 4 respectively. The oil filter 6 is located below the oil separator 4. The economizer 9 is located above the base frame. The oil cooler 10 is located above the base frame.

[0027] The compressor 1 has an intake valve assembly 8 and an exhaust valve assembly 5. The intake port of the compressor 1 is connected to the intake valve assembly 8, and the exhaust valve assembly 5 is connected to the oil separator 4, thus forming a gas passage of "intake valve assembly 8 - compressor 1 - oil separator 4 - exhaust valve assembly 5". The economizer 9 is a plate-type economizer. The oil cooler 10 is a plate-type oil cooler. The oil supply pipe assembly 11 is installed on one side of the oil separator 4, and the oil filter 6, the oil cooler 10, and the compressor 1 are connected through the oil supply pipe assembly 11, forming an oil passage of "oil separator 4 - oil cooler 10 - oil filter 6 - oil supply pipe assembly 11 - compressor 1".

[0028] The oil filter 6 includes a first oil filter 6 and a second oil filter 6; the first oil filter 6 and the second oil filter 6 are arranged side by side below the oil separator 4, and bypass valves are respectively provided on the first oil filter 6 and the second oil filter 6.

[0029] To better illustrate this application, taking the above embodiment as an example, the working principle of oil and gas in this embodiment is as follows:

[0030] (1) Refrigerant gas passage: The refrigerant gas enters the compressor 1 from the suction valve assembly 8. After being compressed by the compressor 1, the gas is discharged into the oil separator 4 for separation, and the separated refrigerant gas is discharged to the external condenser (not shown in the figure) through the exhaust valve assembly 5.

[0031] (2) Refrigeration oil liquid passage: The refrigeration oil in the oil separator 4 is cooled by the oil cooler 10, filtered by the first oil filter 6 and the second oil filter 6, and then supplied to the compressor 1 through the oil supply pipe assembly 11.

[0032] (3) Refrigerant liquid passage: Refrigerant liquid flows from the external liquid receiver (not shown in the figure) to the economizer 9. The refrigerant flowing into the economizer 9 has two liquid passages. The first passage is throttled by the throttling component and flows into the economizer 9 to complete heat exchange. The refrigerant gas is then replenished to the compressor 1. The second passage does not throttle by the throttling component and directly passes through the economizer 9 for subcooling.

[0033] It is obvious that those skilled in the art can make various modifications and alterations to the embodiments of this application without departing from the spirit and scope of this application. In this way, this application also aims to cover such modifications and alterations if they fall within the scope of the claims and their equivalents. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are described in mutually different dependent claims does not indicate that a combination of these measures cannot be used for profit. Any reference numerals in the claims should not be considered limiting in scope.

Claims

1. An open-type screw compressor unit, comprising: A compressor, a motor, a servo housing, an oil separator, an oil filter, a control cabinet, an economizer, an oil cooler, and a base frame are characterized in that the base frame is installed between the legs of the oil separator; the compressor is connected to the motor through the servo housing and is installed above the oil separator; the control cabinet is located on one side of the oil separator and is electrically connected to the compressor, the motor, and the oil separator respectively; the oil filter is located below the oil separator; the economizer is located above the base frame; and the oil cooler is located above the base frame.

2. The open-type screw compressor unit according to claim 1, characterized in that, Also includes: The compressor has an intake valve assembly and an exhaust valve assembly; the compressor's intake port is connected to the intake valve assembly, and the exhaust valve assembly is connected to the oil separator, thereby forming a gas passage of "intake valve assembly - compressor - oil separator - exhaust valve assembly".

3. The open-type screw compressor unit according to claim 1, characterized in that, The economizer is a plate-shell type economizer.

4. The open-type screw compressor unit according to claim 1, characterized in that, The oil cooler is a plate-shell type oil cooler.

5. The open-type screw compressor unit according to claim 2, characterized in that, Also includes: Oil supply pipe assembly; the oil supply pipe assembly is installed on one side of the oil separator, and the oil filter, the oil cooler and the compressor are connected through the oil supply pipe assembly to form an oil circuit channel of "oil separator-oil cooler-oil filter-oil supply pipe assembly-compressor".

6. The open-type screw compressor unit according to claim 2, characterized in that, The oil filter includes a first oil filter and a second oil filter; the first oil filter and the second oil filter are arranged side by side below the oil separator, and a bypass valve is provided on the first oil filter and the second oil filter respectively.

7. The open-type screw compressor unit according to claim 2, characterized in that, It also includes a throttling component; the throttling component is disposed on the base frame and connected to the economizer; forming a compressor gas supply channel of "throttling component-economizer-compressor".

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