Aeration refrigeration equipment

Abstract

The utility model belongs to the technical field of refrigeration equipment, and relates to an aeration refrigeration equipment, comprising a fixed-frequency refrigeration device (1) and a variable-frequency refrigeration device (2), wherein the fixed-frequency refrigeration device (1) and the variable-frequency refrigeration device (2) are connected via an air duct (3). The aeration refrigeration equipment of the utility model takes the outlet air temperature as the control target, and in order to accurately adjust the outlet air temperature, the first stage of cooling adopts a fixed-frequency refrigeration system to achieve a large-scale cooling of the compressed air; the second stage adopts a variable-frequency refrigeration system to achieve accurate outlet temperature through adjustment within a smaller range.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration equipment and relates to aeration refrigeration equipment. Background Art

[0002] In aquaculture, sewage treatment and other fields where compressed air is needed, it is usually necessary to cool the compressed air. The existing compressed air devices and cooling devices have poor temperature control accuracy for compressed air and large fluctuations in outlet air temperature. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems and provide an aeration refrigeration device.

[0004] To achieve the above object, the utility model provides an aeration refrigeration device, including a fan and a refrigeration device connected to the fan, the refrigeration device including a fixed-frequency refrigeration device and a variable-frequency refrigeration device, and the fan and the refrigeration device are connected through an air duct.

[0005] Furthermore, the fixed-frequency refrigeration device includes a condenser, a liquid storage device, a filter, an electronic expansion valve, a liquid separator, an evaporator, a compressor and a high-pressure switch which are arranged in sequence.

[0006] Furthermore, the variable frequency refrigeration device includes a second condenser, a second liquid storage device, a second filter, a second electronic expansion valve, a second liquid distributor, a second evaporator, a second compressor and a second high-pressure switch.

[0007] Furthermore, the temperature of the evaporator is 45°C-110°C.

[0008] Furthermore, the temperature of the air discharged from the variable frequency refrigeration device is -25°C-25°C.

[0009] The beneficial effects of the utility model are as follows:

[0010] The aeration refrigeration equipment of the utility model takes the outlet air temperature as the control target. In order to accurately adjust the outlet air temperature, the first stage of cooling adopts a fixed-frequency refrigeration system to achieve a large-scale cooling of the compressed air; the second stage adopts a variable-frequency refrigeration system to achieve precise outlet temperature through a smaller range of adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram showing the structure of the aeration refrigeration equipment according to the utility model;

[0012] Figure 2 The system principle diagram of the aeration refrigeration equipment according to the utility model is schematically shown. DETAILED DESCRIPTION

[0013] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the drawings required for the implementation are briefly introduced below. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. The implementation methods cannot be described one by one here, but the implementation methods of the present invention are not therefore limited to the following implementation methods.

[0015] Combination Figure 1 and Figure 2 As shown, the utility model provides an aeration refrigeration device, including a fan a and a refrigeration device b, wherein the fan a and the refrigeration device b are connected via an air duct 3. The refrigeration device b includes a fixed frequency refrigeration device 1 and a variable frequency refrigeration device 2.

[0016] In this embodiment, the fixed-frequency refrigeration device includes a condenser 11, a liquid reservoir 12, a filter 13, an electronic expansion valve 14, a liquid separator 15, an evaporator 16, a compressor 17 and a high-pressure switch 18 arranged in sequence. The variable-frequency refrigeration device 2 includes a second condenser 21, a second liquid reservoir 22, a second filter 23, a second electronic expansion valve 24, a second liquid separator 25, a second evaporator 26, a second compressor 27 and a second high-pressure switch 28.

[0017] The aeration refrigeration equipment of the utility model takes the outlet air temperature as the control target. In order to accurately adjust the outlet air temperature, the first stage of cooling adopts a fixed-frequency refrigeration system to achieve a large-scale cooling of the compressed air; the second stage adopts a variable-frequency refrigeration system to achieve precise outlet temperature through a smaller range of adjustment.

[0018] The aeration refrigeration equipment of the present invention can control the temperature of the air passing through the evaporator 16 to be 45°C-110°C, and the temperature of the air discharged through the variable frequency refrigeration device 2 can be controlled to be -25°C-25°C.

[0019] In addition, the aeration refrigeration equipment of the present invention can determine the frosting condition of the evaporator according to the temperature difference between the compressed air in the air duct 3 and the Freon in the evaporator, thereby realizing intelligent frost control.

[0020] The above is only one embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aeration refrigeration device, characterized in that: It comprises a fan (a) and a refrigeration device (b) connected to the fan (a), wherein the refrigeration device (b) comprises a fixed-frequency refrigeration device (1) and a variable-frequency refrigeration device (2), and the fan (a) and the refrigeration device (b) are connected via an air duct (3); The fixed-frequency refrigeration device (1) comprises a condenser (11), a liquid storage device (12), a filter (13), an electronic expansion valve (14), a liquid separator (15), an evaporator (16), a compressor (17) and a high-pressure switch (18) which are arranged in sequence; The temperature of the evaporator (16) is 45°C-110°C; The temperature of the air discharged from the variable frequency refrigeration device (2) is -25°C to 25°C.

2. The aeration refrigeration equipment according to claim 1, characterized in that: The variable frequency refrigeration device (2) comprises a second condenser (21), a second liquid storage device (22), a second filter (23), a second electronic expansion valve (24), a second liquid distributor (25), a second evaporator (26), a second compressor (27) and a second high-pressure switch (28).

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