CN212910560U - Heat radiation structure of CT complete machine - Google Patents
Heat radiation structure of CT complete machine Download PDFInfo
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- CN212910560U CN212910560U CN202021885459.1U CN202021885459U CN212910560U CN 212910560 U CN212910560 U CN 212910560U CN 202021885459 U CN202021885459 U CN 202021885459U CN 212910560 U CN212910560 U CN 212910560U
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Abstract
The utility model provides a heat radiation structure of a CT complete machine, which relates to the technical field of CT heat radiation and comprises a heat radiation fan arranged at the top of a CT outer cover and an NTC thermistor connected with the heat radiation fan; the cooling fan can adjust the rotating speed according to the change of the resistance value of the thermistor along with the temperature. The utility model discloses heat radiation structure realizes that the CT complete machine dispels the heat to the temperature control in the CT dustcoat. The control process who adopts is very simple and convenient, does not have control circuit board, also need not complicated algorithm just can realize the temperature adjustment of CT complete machine, can satisfy the operation under the CT high load state, can realize again making an uproar and energy-conserving demand of falling under the low-load state, compares with conventional CT complete machine temperature control scheme, the utility model discloses clinical practicality is strong, realizes simply.
Description
Technical Field
The utility model relates to a heat radiation structure of CT complete machine belongs to CT heat dissipation technical field.
Background
The clinical use of the CT is more and more popular, and because the loading amount of the CT in China is relatively small, the utilization rate of each CT is high. The higher the CT is used, the larger the calorific value of the CT is, because the energy of X-rays emitted by the CT only accounts for 1% of the total consumed energy, the temperature of the whole CT can be rapidly increased when the CT is continuously used at high frequency. The performance of the core component detector of the CT with the overhigh temperature can be greatly reduced, the image quality can be deteriorated, and the service life of the CT can be correspondingly shortened, so that the heat dissipation of the CT is very necessary.
Most current CT manufacturers all adopt the mode of installing radiator fan on the CT dustcoat to dispel the heat to CT, and the wind channel design that the cooperation corresponds, the fan is more big more, and CT system's radiating effect can be better. However, the larger the fans, the greater the corresponding audible noise, and the regulations require that the noise of the CT system should not exceed 70dBA, which is already a very large volume, and many manufacturers increase the fans to meet the clinical performance of the CT, while sacrificing the comfort of use of the CT.
In addition, in the prior art, a special fan driving circuit is designed to monitor the temperature of the whole machine and adjust the rotating speed of the fan according to the temperature, but the method increases the cost of the system,
it is clear that the two methods described above still have certain drawbacks.
The present application was made based on this.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned defect that exists among the prior art, the utility model provides a heat radiation structure of CT complete machine reaches the noise requirement when can satisfying the heat dissipation demand of CT system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a heat radiation structure of a CT complete machine comprises a heat radiation fan arranged at the top of a CT outer cover and an NTC thermistor connected with the heat radiation fan; the cooling fan can adjust the rotating speed according to the change of the resistance value of the thermistor along with the temperature.
Further, the lowest rotation speed of the heat dissipation fan is 1500RPM, the highest rotation speed is 3050RPM, the lowest audible noise is 34dBA, and the highest audible noise is 47 dBA.
Further, when the temperature of the CT system measured by the thermistor is lower than 28 ℃, the cooling fan is maintained at the lowest rotating speed of 1500RPM, and when the temperature of the CT system measured by the thermistor is higher than 35 ℃, the cooling fan is maintained at the highest rotating speed of 3050 RPM.
Further, the rotation speed of the heat radiation fan is linearly adjusted between 20 ℃ and 35 ℃.
Further, the cooling fan is powered by 24V direct current.
The utility model discloses a theory of operation: the radiator fan is installed on the top of the CT outer cover, and according to the temperature test experience of the whole machine, hot air generated by the CT can be gathered on the top of the outer cover, so that the fan and the thermistor are installed on the top of the CT, the monitored temperature can be more direct, and the response of the fan is quicker.
Compared with the prior art, the utility model discloses can realize following technological effect:
the utility model discloses heat radiation structure realizes that the CT complete machine dispels the heat to the temperature control in the CT dustcoat. The control process who adopts is very simple and convenient, does not have control circuit board, also need not complicated algorithm just can realize the temperature adjustment of CT complete machine, can satisfy the operation under the CT high load state, can realize again making an uproar and energy-conserving demand of falling under the low-load state, compares with conventional CT complete machine temperature control scheme, the utility model discloses clinical practicality is strong, realizes simply.
Drawings
Fig. 1 is a wiring diagram of the heat dissipation fan of the present embodiment;
FIG. 2 is a front view of the heat dissipation fan of the present embodiment;
FIG. 3 is a left side view of the heat dissipation fan of the present embodiment;
fig. 4 is a linear relationship diagram of the rotation speed of the cooling fan, the temperature detected by the thermistor and the corresponding resistance value.
Detailed Description
In order to make the technical means and technical effects achieved by the present invention clearer and more complete, an embodiment is provided, and the following detailed description is made with reference to the accompanying drawings:
taking 64 rows of CT as an example, 6 fan outlets are dug at the top of the outer cover of the CT, and the fans are installed inside the outer cover and exhaust air outwards.
The wiring diagram of the FAN is shown in fig. 1, FAN6, FAN7 and FAN8 are selected cooling FANs, the material number is FAN-0009, ELA-0046 is selected NTC thermistors, the NTC thermistors are directly connected with corresponding interfaces on the FAN, the FAN is supplied with 24V direct current, every 3 FANs are in one group, the two groups are in total, the FAN corresponds to a low-power machine type, and each group only needs to use two FANs. The fan direction and the connection points are shown in fig. 2 and 3.
In the embodiment, a direct current fan with an NTC thermistor interface is used as a cooling fan of the CT system, and the rotating speed of the fan is adjusted according to the change of the resistance value of the thermistor along with the temperature.
When the temperature of the CT system is lower than 28 ℃, the fan is maintained at the lowest rotating speed of 1500RPM, and the auditory noise of a single fan is 34dBA at the moment; at CT system temperatures above 35℃, the fan was maintained at a maximum speed of 3050RPM, at which time the audible noise of the individual fan was 47 dBA. The rotation speed of the fan is linearly adjusted between 20 and 35 ℃. When the frequency of CT is low, the heat generated by CT is less, the temperature of the whole machine is low, the fan runs at low speed, and the hearing noise of the whole machine is maintained at a low level. When the CT is used for a high frequency, the temperature of the whole machine rises, and the rotating speed of the fan is increased. Fig. 4 is a linear graph of fan speed versus temperature and corresponding resistance detected by the thermistor. The temperature of the CT system can be maintained at a reasonable level.
The automatic heat dissipation scheme for the CT has the advantages that the effect of the automatic heat dissipation scheme is obvious, and the rotating speed of the fan can be automatically adjusted according to different use frequencies of the CT, so that the heat dissipation performance of the CT is adjusted. Avoiding overdesign of the CT to meet the highest performance. The scheme does not need a complex circuit, does not need elaborate maintenance, and has low cost and high performance. For the CT with different heat dissipation requirements, the number of fans can be increased or decreased appropriately, and the cost performance of the system is further improved, for example, for the model with lower power of the whole machine, the use with the highest performance can be satisfied by adopting 4 fans, and for the model with higher power of the whole machine, which is more than 64 rows, the use of the system can be satisfied by adopting 6 fans.
The above is a detailed description of the technical solutions provided in connection with the preferred embodiments of the present invention, and it should not be assumed that the embodiments of the present invention are limited to the above description, and it will be apparent to those skilled in the art that the present invention can be implemented in a variety of ways without departing from the spirit and scope of the present invention.
Claims (5)
1. A heat radiation structure of CT complete machine which characterized in that: the CT detection device comprises a cooling fan arranged on the top of a CT outer cover and an NTC thermistor connected with the cooling fan; the cooling fan can adjust the rotating speed according to the change of the resistance value of the thermistor along with the temperature.
2. The heat dissipation structure of a CT machine according to claim 1, wherein: the lowest rotating speed of the heat radiation fan is 1500RPM, the highest rotating speed is 3050RPM, the lowest audible noise is 34dBA, and the highest audible noise is 47 dBA.
3. The heat dissipation structure of a CT machine according to claim 1, wherein: when the temperature of the CT system measured by the thermistor is lower than 28 ℃, the cooling fan is maintained at the lowest rotating speed of 1500RPM, and when the temperature of the CT system measured by the thermistor is higher than 35 ℃, the cooling fan is maintained at the highest rotating speed of 3050 RPM.
4. The heat dissipation structure of a CT machine according to claim 1, wherein: the rotation speed of the heat radiation fan is linearly adjusted between 20 ℃ and 35 ℃.
5. The heat dissipation structure of a CT machine according to claim 1, wherein: the heat radiation fan is powered by 24V direct current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021885459.1U CN212910560U (en) | 2020-09-02 | 2020-09-02 | Heat radiation structure of CT complete machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021885459.1U CN212910560U (en) | 2020-09-02 | 2020-09-02 | Heat radiation structure of CT complete machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212910560U true CN212910560U (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021885459.1U Active CN212910560U (en) | 2020-09-02 | 2020-09-02 | Heat radiation structure of CT complete machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212910560U (en) |
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2020
- 2020-09-02 CN CN202021885459.1U patent/CN212910560U/en active Active
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