JP2000093847A - Centrifugal separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a centrifugal separator compact and to improve the assemblage and maintainability by vertically dividing a storage with a partition member and arranging a condenser cooling fan in the upper storage and a compressor and a condenser in the lower storage. SOLUTION: The inside of a frame 5 is vertically divided by a partition member 11 into two stages, and a second storage is formed in the upper stage and a first storage in the lower stage. A condenser cooling fan 10 is arranged in the second storage. A compressor 8 and a condenser 9 are placed in the first storage. An air guide port 12 for passing the air of the fan 10 is provided in the partition member 11 to let the air passed through the condenser 9 flow smoothly to the fan 10. The fan 10 is arranged obliquely upward so that the air passed through the condenser 9 is not introduced again into the condenser 9. The floor space is decreased in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifuge provided with a device for cooling a rotor so that a sample in the rotor is not denatured by heat generated when the rotor rotates at high speed in a rotating chamber. .

[0002]

2. Description of the Related Art A conventional centrifuge has a device for cooling a rotor using a refrigerant or the like so that a sample in the rotor is not denatured by heat generated when the rotor rotates at high speed in a rotating chamber. I have. This cooling device is wound around an outer peripheral portion of a rotor chamber serving as an evaporator while closely attaching a copper pipe or the like,
A coolant flows through the copper pipe to cool the inside from the wall of the rotor chamber, and further cools the rotor housed in the rotor chamber. The refrigerant is compressed by a compressor, sent to a condenser, cooled by a condenser cooling fan, liquefied, and adiabatically expanded by a capillary tube or the like immediately before entering a copper pipe on the outer periphery of a rotor chamber serving as an evaporator. The refrigerant, which has been heated and deprived of heat, returns to the compressor again and cools the rotor while repeating the same cycle. As shown in FIG. 2, the cooling device is provided with a condenser and a condenser cooling fan adjacent to each other on substantially the same surface of the compressor.
The outside air is taken in from the lower front part or the bottom part of the centrifuge to cool the condenser, or as shown in FIG. 3, the lower rear part of the centrifuge is taken in as the suction part, and the upper part is the exhaust part.

There are several reasons for arranging the condenser cooling fan adjacent to the condenser as described above. For this reason, as means for further cooling the condenser, a fan guide part is provided so that air flows through the entire condenser and does not flow directly into the condenser cooling fan without passing through the condenser. If the condenser cooling fan is too close to the condenser, the noise of the fan will increase. Of course, the condenser cooling fan will be adjacent to the condenser in order to produce the guide parts without waste. In addition, the cooling device is often a unit component in which a compressor, a condenser, and a condenser cooling fan are mounted on a single base plate. It is located near the condenser and the compressor. Therefore, the dimensions of the model were determined by the unit.

[0004]

A cooling device comprising a compressor, a condenser, a condenser cooling fan, and a pipe for circulating a refrigerant is provided with a cooling device for preventing the condenser cooling fan from having an air passage resistance. There is a problem that a blank space needs to be provided between the components and the volume occupied in the centrifuge increases. This has been one of the factors that hinder the miniaturization and space saving of centrifuges that have been strongly demanded by customers in recent years.

In order to reduce the size, it has been proposed to partition the inside of the centrifuge body into two stages, arrange the condenser and the fan in the upper stage, and arrange the compressor in the lower stage. Since it is necessary to connect via a partition, the size can be reduced, but on the other hand, there is a problem that the assembling work becomes complicated.

An object of the present invention is to solve the above-mentioned problems and to provide a centrifugal separator excellent in assembling work and maintainability by housing the cooling device compactly in the body of the centrifuge.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to provide a partitioning member provided in a frame by making a part of a component of a cooling device to be piped with a copper pipe or the like into one unit and a fan as another unit. This is achieved by arranging the compressor and the condenser in the first storage section divided by the above, and further arranging the condenser cooling fan in the second storage section located above the first storage section.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A centrifuge according to this embodiment will be described with reference to FIG. FIG. 1 is a partially longitudinal side view showing an embodiment of a centrifuge. The centrifugal separator includes a rotor 1 containing a sample to be separated, a motor 2 driving the rotor 1 to rotate, a rotor chamber 3 containing the rotor 1 and cooling the rotor 1 generating heat by high-speed rotation, It comprises a door 4 for sealing the rotor chamber 3, a frame 5 serving as a casing of the centrifuge, and a control unit 6 for controlling the centrifuge. A pipe 7 through which a refrigerant for cooling the rotor 1 flows is wound around the outer periphery of the rotor chamber 3. The refrigerant is compressed by a compressor 8, and the compressed gas is cooled and liquefied by a condenser 9 to form a capillary tube 13. , And is repeatedly used in a cycle of evaporating in a pipe around the rotor chamber 3 and returning to the compressor 8 again. Condenser 9
The condenser 10 is cooled by using a condenser cooling fan 10 and passing outside air through the condenser 9.

In this embodiment, the partition member 11
, The condenser cooling fan 10 is disposed in a second storage portion (upper stage) formed by the partition member 11, and a first cooling fan 10 is disposed below the second storage portion. A compressor 8 and a condenser 9 are arranged in a storage section (lower stage). Thus, outside air is taken in from the lower stage and exhausted from the upper stage of the frame 5. Furthermore, the partition member 11 (the middle plate of the frame) that separates the upper and lower stages of the frame 5 includes:
An air passage guide port 12 through which the air of the condenser cooling fan 10 passes is provided so that the air passing through the condenser 8 smoothly flows to the condenser cooling fan 10 located above. It should be noted that the condenser cooling fan 1 prevents the air warmed once passing through the condenser 8 from passing through the inside of the condenser 8 again.
The fan is arranged obliquely upward so that the zero exhaust air is directed upward.

From the above, the compressor 8 and the condenser 9, which are piped with copper pipes or the like, can be integrated and arranged at the lower stage, and the fan 10 without piping can be arranged at the upper stage. Since the size of the main body can be reduced without impairing the piping workability, the installation area of the centrifuge can be reduced. In addition, since the wind passing through the condenser 9 enters from outside the main body, dust and dirt adhere to the condenser 9 but can be easily cleaned from outside the centrifuge.

[0011]

According to the present invention, the compressor and the condenser are arranged in the first storage section divided by the partition member provided in the frame, and the second storage section located above the first storage section. By arranging the condenser cooling fan in the apparatus, a compact centrifuge having excellent assembling workability and maintainability can be provided.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal side view showing an embodiment of a centrifuge according to the present invention.

FIG. 2 is a partially longitudinal side view showing a conventional centrifuge.

FIG. 3 is a partially longitudinal side view showing a conventional centrifuge.

[Explanation of symbols]

1 is a rotor, 2 is a motor, 3 is a rotor room, 4 is a door, 5
Is a frame, 6 is a control unit, 7 is a pipe, 8 is a compressor, 9
Is a condenser, 10 is a condenser cooling fan, 11 is a partition member, 12 is an air path guide port, and 13 is a capillary tube.

Claims (2)

[Claims] A compressor having a rotor rotatably driven by a motor housed in a frame, a rotating chamber for housing the rotor, and a compressor for compressing a refrigerant for cooling the rotating chamber; In a centrifuge equipped with a cooling device composed of a condenser for cooling a refrigerant and a condenser cooling fan for cooling the condenser, the centrifuge is divided by a partition member having an air path guide port provided in the frame. Wherein the compressor and the condenser are arranged in the first accommodation section, and the condenser cooling fan is arranged in the second accommodation section which communicates with the first accommodation section and is located above the first accommodation section. Centrifuge. 2. The condenser cooling fan is arranged such that air flows from below to above the partition member disposed between the condenser cooling fan and the compressor or the condenser. The centrifuge according to claim 1.