Heat dissipation and noise reduction structure of non-refrigerated centrifugal machine

Abstract

The utility model relates to the technical field of centrifugal machine structures, and discloses a heat dissipation and noise reduction structure of a non-refrigerated centrifugal machine, which comprises a non-refrigerated centrifugal machine body, a noise reduction mechanism is arranged in the non-refrigerated centrifugal machine body, and an air suction mechanism is arranged at the top of the non-refrigerated centrifugal machine body. The noise reduction mechanism comprises a sound insulation assembly and a noise reduction assembly, the noise reduction assembly is arranged at the bottom of the sound insulation assembly, the air speed and noise of air blown out of the centrifugal cavity are high, through wrinkles of the ventilation pipe, air is offset in the ventilation pipe, energy of the air is weakened, the air speed is reduced, and the air blown out of the ventilation pipe passes through a silencer body, so that noise is reduced. And normal-temperature air passes through the rotor body and takes away part of heat generated by rotation of the rotor at the same time, so that heat dissipation operation is performed on the non-freezing centrifugal machine body, the temperature rise of a sample in the centrifugal machine rotor is prevented from being too large, and the sample is protected. The overall noise of the machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuge structures, in particular to a heat dissipation and noise reduction structure of a non-refrigerated centrifuge. Background Art

[0002] The National Standard of the People's Republic of China GB / T 30099-2013 General Technical Conditions for Laboratory Centrifuges stipulates that when a non-refrigerated centrifuge is operated at rated voltage and maximum speed corresponding to maximum load, the temperature rise of the test solution in the centrifuge tube (bottle) should not be greater than 12°C after 15 minutes of operation. For this reason, non-refrigerated centrifuges are generally equipped with ventilation and heat dissipation structures to ensure that the temperature rise of the test solution is within the qualified range. When the centrifuge is running under the corresponding load, the ventilation structure often causes wind noise, which affects another technical requirement of the centrifuge, that is, the noise requirement. The National Standard GB / T 30099-2013 General Technical Conditions for Laboratory Centrifuges also stipulates that the noise emitted by the centrifuge at rated voltage and maximum speed corresponding to maximum load, the A-weighted emission sound pressure level LpA at the operator's position and 1m away from the surface of the centrifuge should not be greater than 70dB. How to ensure that the two technical parameters of the test solution temperature rise and noise of the non-refrigerated centrifuge meet the corresponding standards is a design problem that non-refrigerated centrifuges need to solve.

[0003] According to the description of a centralized exhaust and heat dissipation structure of a centrifuge disclosed on the patent website (authorization announcement number: CN210411199 U), "The utility model discloses a centralized exhaust and heat dissipation structure of a centrifuge, including a refrigeration circuit and an air intake and exhaust circuit respectively arranged inside and outside the centrifuge, the refrigeration circuit including a condenser arranged in a heat dissipation chamber; the heat dissipation chamber is provided with an air intake guide and an exhaust guide connected thereto, and a fan is arranged in the exhaust guide; the air intake and exhaust circuit includes an air intake duct and an exhaust duct connected to the outside, and the air intake duct is connected in series with the exhaust duct through the heat dissipation chamber; the air intake duct is connected to the air intake guide, and the exhaust duct is connected to the exhaust guide. The utility model separates the heat dissipation ventilation of the machine from the ventilation of the laboratory, thereby solving the problem of large changes in the laboratory environment temperature, and also better solves the application problem of the centrifuge in laboratories with high requirements such as dust-free and sterile conditions."

[0004] In view of the above description, the applicant believes that there are the following problems:

[0005] During use, the utility model sets an air inlet duct and an exhaust duct connected to the outdoors on the heat dissipation chamber of the condenser, uses a fan to discharge the heat generated by the condenser in the heat dissipation chamber to the outdoors, and simultaneously draws cold air from the outdoors into the heat dissipation chamber to dissipate the heat of the condenser. However, in actual use, the heat generated by the condenser in the heat dissipation chamber is discharged to the outdoors by the fan, and the temperature rise of the sample in the centrifuge rotor is too large, which may cause harm to the sample. Therefore, it is necessary to improve a heat dissipation and noise reduction structure of a non-refrigerated centrifuge to solve the above problem. Utility Model Content

[0006] The utility model aims to provide a heat dissipation and noise reduction structure for a non-refrigerated centrifuge to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the utility model provides the following technical solutions: a heat dissipation and noise reduction structure of a non-refrigerated centrifuge, comprising a non-refrigerated centrifuge body, a noise reduction mechanism is arranged inside the non-refrigerated centrifuge body, and a suction mechanism is arranged on the top of the non-refrigerated centrifuge body;

[0008] The noise reduction mechanism comprises a sound insulation component and a sound absorbing component, and the sound absorbing component is arranged at the bottom of the sound insulation component.

[0009] Preferably, the sound insulation component includes a protective cover, the protective cover is arranged inside the non-refrigerated centrifuge body, a centrifugal chamber is arranged inside the protective cover, a ventilation hole one is opened on the outside of the centrifugal chamber, a middle partition is fixedly installed inside the non-refrigerated centrifuge body, a ventilation hole two is opened inside the middle partition, the centrifugal chamber is discharged from the ventilation hole one opened on the surface of the centrifugal chamber, and the non-refrigerated centrifuge body is heat-dissipated.

[0010] Preferably, the protective cover is fixedly mounted on the top of the non-refrigerated centrifuge body, the ventilation holes are circumferentially distributed on the outer wall of the centrifugal chamber, and sound insulation material is provided between the protective cover and the centrifugal chamber to insulate wind noise.

[0011] Preferably, the silencer assembly includes a flange, which is arranged at the bottom of the middle partition, a ventilation pipe is fixedly installed inside the flange, a muffler body is fixedly installed at one end of the ventilation pipe away from the flange, a fixing block is fixedly installed on the inner side of the bottom of the non-refrigerated centrifuge body, a muffler outer wall is arranged on the outside of the muffler body, a sound-absorbing material is arranged inside the muffler body, and a decorative grid is fixedly installed on the back of the muffler body. The air speed and wind noise blown out from the centrifugal chamber are relatively large, and the folds of the ventilation pipe make the wind cancel each other out inside the ventilation pipe, weaken its energy and reduce the wind speed.

[0012] Preferably, the flange is fixedly installed at the bottom of the middle partition by bolts, a through hole is opened at the corresponding position of the fixing block and the muffler body, and the muffler body is fixedly installed inside the through hole, and heat dissipation holes are opened at the back of the non-refrigerated centrifuge body and the corresponding position of the back of the muffler body, and the ventilation pipe is arranged at the bottom of the second ventilation hole, and the air blown out of the ventilation pipe passes through the muffler body and is absorbed by the internal sound-absorbing material 1, thereby further eliminating and reducing the noise, thereby protecting the health of the staff.

[0013] Preferably, the air suction mechanism includes a door cover body, which is rotatably mounted on the top of the non-refrigerated centrifuge body, and a second sound-absorbing material is fixedly mounted inside the door cover body, a door cover bottom plate is fixedly mounted on one end of the second sound-absorbing material away from the door cover body, a connecting hole 1 is provided inside the door cover bottom plate, and a connecting hole 2 is provided inside the door cover bottom plate, so as to perform heat dissipation operation on the non-refrigerated centrifuge body to prevent the non-refrigerated centrifuge body from failing to work due to excessively high temperature.

[0014] Preferably, the connecting hole 1 is opened at the center of the door cover bottom plate, and connects the cold air outside the non-refrigerated centrifuge body and the door cover body. The connecting hole 2 is provided with two groups and is symmetrically distributed at the center line of the front side of the door cover bottom plate. The connecting hole 2 connects the door cover body and the centrifugal chamber. Normal temperature air passes through the rotor body and takes away part of the heat generated by the rotation of the rotor.

[0015] Compared with the prior art, the utility model provides a heat dissipation and noise reduction structure of a non-refrigerated centrifuge, which has the following beneficial effects:

[0016] 1. The heat dissipation and noise reduction structure of the non-refrigerated centrifuge has a noise reduction mechanism. During use, the air speed and wind noise of the air blown out from the centrifugal chamber are relatively large. The folds of the ventilation pipe make the wind cancel each other out inside the ventilation pipe, weaken its energy, and reduce the wind speed. The air blown out from the inside of the ventilation pipe passes through the muffler body and is absorbed by the internal sound-absorbing material to further eliminate and reduce the noise, thereby reducing the machine noise.

[0017] 2. The heat dissipation and noise reduction structure of the non-refrigerated centrifuge is provided with an air suction mechanism. During use, the rotor in the centrifugal chamber rotates to stir the air inside the centrifugal chamber. At this time, the air pressure at the center of the centrifugal chamber is relatively low, and the normal temperature air outside the non-refrigerated centrifuge body is sucked into the centrifugal chamber through the connecting hole 2. The air pressure outside the centrifugal chamber is relatively high. The normal temperature air passes through the rotor body and takes away part of the heat generated by the rotation of the rotor, thereby performing a heat dissipation operation on the non-refrigerated centrifuge body, preventing the non-refrigerated centrifuge body from being unable to work due to excessively high temperature, taking away the heat generated by the rotor, and reducing the temperature rise of the sample in the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0019] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the sound insulation component of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the silencer assembly of the utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the silencer assembly of the utility model;

[0023] Figure 5 This is a schematic diagram of the muffler of the utility model and its related structures;

[0024] Figure 6 It is a schematic diagram of the exploded structure of the air suction mechanism of the utility model.

[0025] In the figure: 1. non-refrigerated centrifuge body; 2. noise reduction mechanism; 21. sound insulation component; 211. protective cover; 212. centrifugal chamber; 213. ventilation hole one; 214. middle partition; 215. ventilation hole two; 22. silencer component; 221. flange; 222. ventilation pipe; 223. silencer body; 224. fixing block; 225. silencer outer wall; 226. sound absorbing material one; 227. decorative grid; 3. air suction mechanism; 31. door cover body; 32. sound absorbing material two; 33. door cover bottom plate; 34. connecting hole one; 35. connecting hole two. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example 1: Please refer to Figure 1-5 The utility model provides a technical solution: a heat dissipation and noise reduction structure of a non-refrigerated centrifuge, comprising a non-refrigerated centrifuge body 1, a noise reduction mechanism 2 is arranged inside the non-refrigerated centrifuge body 1, and a suction mechanism 3 is arranged on the top of the non-refrigerated centrifuge body 1;

[0029] The noise reduction mechanism 2 includes a sound insulation component 21 and a sound absorbing component 22 , and the sound absorbing component 22 is arranged at the bottom of the sound insulation component 21 .

[0030] Furthermore, the sound insulation component 21 includes a protective cover 211, which is arranged inside the non-refrigerated centrifuge body 1, a centrifugal chamber 212 is arranged inside the protective cover 211, a ventilation hole 213 is opened on the outside of the centrifugal chamber 212, a middle partition 214 is fixedly installed inside the non-refrigerated centrifuge body 1, and a ventilation hole 215 is opened inside the middle partition 214. The centrifugal chamber 212 is discharged from the ventilation hole 213 opened on the surface of the centrifugal chamber 212, and the non-refrigerated centrifuge body 1 is heat-dissipated.

[0031] Furthermore, the protective cover 211 is fixedly installed on the top of the non-refrigerated centrifuge body 1, the ventilation holes 213 are circumferentially distributed on the outer wall of the centrifugal chamber 212, and sound insulation material is arranged between the protective cover 211 and the centrifugal chamber 212 to insulate wind noise.

[0032] Furthermore, the silencer assembly 22 includes a flange 221, which is arranged at the bottom of the middle partition 214, a ventilation pipe 222 is fixedly installed inside the flange 221, a silencer body 223 is fixedly installed at one end of the ventilation pipe 222 away from the flange 221, a fixing block 224 is fixedly installed on the inner side of the bottom of the non-refrigerated centrifuge body 1, a silencer outer wall 225 is arranged on the outside of the silencer body 223, a sound-absorbing material 226 is arranged inside the silencer body 223, and a decorative grid 227 is fixedly installed on the back of the silencer body 223. The wind speed and wind noise of the air blown out from the centrifugal chamber 212 are relatively large. Through the folds of the ventilation pipe 222, the wind cancels each other out inside the ventilation pipe 222, weakens its energy, and reduces the wind speed.

[0033] Furthermore, the flange 221 is fixedly installed at the bottom of the middle partition 214 by bolts, a through hole is opened at the corresponding position of the fixing block 224 and the muffler body 223, and the muffler body 223 is fixedly installed inside the through hole, and heat dissipation holes are opened at the corresponding positions of the back of the non-refrigerated centrifuge body 1 and the back of the muffler body 223, and the ventilation pipe 222 is arranged at the bottom of the ventilation hole 215. The air blown out from the ventilation pipe 222 passes through the muffler body 223 and is absorbed by the internal sound-absorbing material 226, so as to further eliminate and reduce the noise and reduce the machine noise.

[0034] Example 2: Please refer to Figure 6 In combination with the first embodiment, it is further obtained that the air suction mechanism 3 includes a door cover body 31, the door cover body 31 is rotatably mounted on the top of the non-refrigerated centrifuge body 1, and a sound absorbing material 2 32 is fixedly mounted inside the door cover body 31, and a door cover bottom plate 33 is fixedly mounted on one end of the sound absorbing material 2 32 away from the door cover body 31, a connecting hole 1 34 is opened inside the door cover bottom plate 33, and a connecting hole 2 35 is opened inside the door cover bottom plate 33, which performs a heat dissipation operation on the non-refrigerated centrifuge body 1, takes away the heat generated by the rotor, and reduces the sample temperature in the rotor.

[0035] Furthermore, the connecting hole 1 34 is opened at the center of the door cover bottom plate 33, and connects the cold air outside the non-refrigerated centrifuge body 1 and the door cover body 31. The connecting hole 2 35 is provided with two groups, and is symmetrically distributed at the center line of the front side of the door cover bottom plate 33. The connecting hole 2 35 connects the door cover body 31 and the centrifugal chamber 212. Normal temperature air passes through the rotor body and takes away part of the heat generated by the rotation of the rotor.

[0036] In actual operation, when the device is used, the non-refrigerated centrifuge body 1 is started, and the rotor in the centrifugal chamber 212 rotates to stir the air inside the centrifugal chamber 212. At this time, the air pressure at the center of the centrifugal chamber 212 is relatively low, and the normal temperature air outside the non-refrigerated centrifuge body 1 is sucked into the centrifugal chamber 212 through the connecting hole 2 35. The air pressure outside the centrifugal chamber 212 is relatively high. The normal temperature air passes through the rotor body and takes away part of the heat generated by the rotation of the rotor, and then is discharged from the centrifugal chamber 212 through the ventilation hole 1 213 opened on the surface of the centrifugal chamber 212. The air velocity and wind noise of the air blown out of the centrifugal chamber 212 are both relatively large. The folds of the ventilation pipe 222 make the wind cancel each other out inside the ventilation pipe 222, weaken its energy, and reduce the wind. The air blown out from the ventilation pipe 222 passes through the muffler body 223, and the noise is absorbed by the internal sound-absorbing material 226, which further eliminates and reduces the noise, so that the wind noise discharged from the non-refrigerated centrifuge body 1 through the heat dissipation holes opened on the back of the non-refrigerated centrifuge body 1 meets the national standards, thereby protecting the health of the staff.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A heat dissipation and noise reduction structure for a non-refrigerated centrifuge, comprising a non-refrigerated centrifuge body (1), characterized in that: The non-refrigerated centrifuge body (1) is provided with a noise reduction mechanism (2) inside, and the top of the non-refrigerated centrifuge body (1) is provided with an air suction mechanism (3); The noise reduction mechanism (2) comprises a sound insulation component (21) and a sound absorbing component (22), wherein the sound absorbing component (22) is arranged at the bottom of the sound insulation component (21); The muffler assembly (22) comprises a flange (221), the flange (221) being arranged at the bottom of the middle partition (214), a ventilation pipe (222) being fixedly installed inside the flange (221), a muffler body (223) being fixedly installed at one end of the ventilation pipe (222) away from the flange (221), a fixing block (224) being fixedly installed on the inner side of the bottom of the non-refrigerated centrifuge body (1), a muffler outer wall (225) being arranged on the outer side of the muffler body (223), a sound absorbing material (226) being arranged inside the muffler body (223), and a decorative grid (227) being fixedly installed on the back of the muffler body (223).

2. The heat dissipation and noise reduction structure of a non-refrigerated centrifuge according to claim 1, characterized in that: The sound insulation component (21) comprises a protective cover (211), the protective cover (211) being arranged inside the non-refrigerated centrifuge body (1), a centrifugal chamber (212) being arranged inside the protective cover (211), a first ventilation hole (213) being provided on the outside of the centrifugal chamber (212), a middle partition (214) being fixedly installed inside the non-refrigerated centrifuge body (1), and a second ventilation hole (215) being provided inside the middle partition (214).

3. The heat dissipation and noise reduction structure of a non-refrigerated centrifuge according to claim 2, characterized in that: The protective cover (211) is fixedly mounted on the top of the non-refrigerated centrifuge body (1); the ventilation holes (213) are circumferentially distributed on the outer wall of the centrifugal chamber (212); and sound insulation material is provided between the protective cover (211) and the centrifugal chamber (212).

4. The heat dissipation and noise reduction structure of a non-refrigerated centrifuge according to claim 1, characterized in that: The flange (221) is fixedly mounted on the bottom of the middle partition (214) by means of bolts, through holes are provided at positions corresponding to the fixing block (224) and the muffler body (223), and the muffler body (223) is fixedly mounted inside the through holes, heat dissipation holes are provided at positions corresponding to the back of the non-refrigerated centrifuge body (1) and the back of the muffler body (223), and the ventilation pipe (222) is arranged at the bottom of the second ventilation hole (215).

5. The heat dissipation and noise reduction structure of a non-refrigerated centrifuge according to claim 2, characterized in that: The air suction mechanism (3) comprises a door cover body (31), the door cover body (31) is rotatably mounted on the top of the non-refrigerated centrifuge body (1), a second sound absorbing material (32) is fixedly mounted inside the door cover body, a door cover bottom plate (33) is fixedly mounted on one end of the second sound absorbing material (32) away from the door cover body (31), a first communication hole (34) is provided inside the door cover bottom plate (33), and a second communication hole (35) is provided inside the door cover bottom plate (33).

6. The heat dissipation and noise reduction structure of a non-refrigerated centrifuge according to claim 5, characterized in that: The first connecting hole (34) is provided at the center of the door cover bottom plate (33) and connects the cold air outside the non-refrigerated centrifuge body (1) and the door cover body (31). The second connecting hole (35) is provided in two groups and is symmetrically distributed at the center line of the front side of the door cover bottom plate (33). The second connecting hole (35) connects the door cover body (31) and the centrifugal chamber (212).

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