CN210532793U

CN210532793U - Electronic refrigerating device

Info

Publication number: CN210532793U
Application number: CN201921611367.1U
Authority: CN
Inventors: 李斌
Original assignee: Wuxi Yingfirui Medical Technology Co Ltd
Current assignee: Wuxi Yingfirui Medical Technology Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-05-15
Anticipated expiration: 2029-09-26

Abstract

The utility model is suitable for a medical instrument field provides an electron refrigerating plant, include: a power adapter for the power supply, refrigeration module, direct current relay, temperature controller, the refrigeration piece is used for refrigerating for the base, the temperature controller gives this refrigeration piece power supply through a direct current relay, temperature probe on the base of refrigeration module feeds back the temperature of base to the temperature controller in real time, whether the temperature controller supplies power for the refrigeration piece through direct current relay according to the temperature value control of feedback again to can guarantee that the temperature of base maintains in certain within range. And, the temperature controller can also control radiator fan's rotational speed according to the temperature value of feedback, can control radiator fan slow speed when the temperature of base is close the standard temperature that sets up and rotate, otherwise control radiator fan fast speed and rotate, help prolonging radiator fan's life and noise reduction.

Description

Electronic refrigerating device

Technical Field

The utility model belongs to the field of medical equipment, especially, relate to an electronic refrigeration device.

Background

The medical field often needs to use thermostatic devices, such as infant thermostats, insulin cryopreservation boxes, electronic refrigeration tanks used in hair transplantation processes, and the like, and the performance of the thermostatic devices can directly influence the medical effect.

The thermostat device has several types, namely single refrigeration, single heat preservation, and refrigeration and heat preservation, and generally requires accurate temperature control to be maintained in a constant temperature range. The temperature control techniques adopted by different thermostatic devices are different, and some thermostatic devices have unsatisfactory thermostatic effects. Take the electron refrigeration groove that the in-process was used to plant and send out as the example, this electron refrigeration groove is used for preserving the hair follicle cell tissue of extraction, and at present domestic all is to use the stainless steel bowl to add the ice-cube to preserve, but the temperature of hair follicle cell tissue is uncontrollable, because the ice-cube can be melted along with time, and the temperature variation is big, can not preserve with constant temperature.

Therefore, there is a need for improved, optimized temperature control techniques for thermostats.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve makes it maintain in invariable temperature range for how to realize refrigerating plant's accurate accuse temperature.

In order to solve the above technical problem, the utility model discloses a realize like this, an electronic refrigeration device, include: a power adapter for supplying power; the refrigeration module comprises a base, a refrigeration sheet, a radiator and a cooling fan, wherein the base is used for being in contact with the refrigeration container, the refrigeration sheet is used for refrigerating the base, the radiator is used for radiating heat of the refrigeration sheet, and the cooling fan is used for pumping away the heat radiated by the radiator; the refrigeration sheet, the radiator and the cooling fan are sequentially arranged, and a temperature probe is arranged on the base; the negative electrode of the refrigerating sheet and the negative electrode of the cooling fan are both connected with the negative electrode of the power adapter; the direct current relay is provided with a coil part, a common end and a normally open contact, wherein the common end and the normally open contact are in short circuit when the coil part is driven and are in open circuit when the coil part is not driven; the public end is connected with the anode of the power adapter, and the normally open contact is connected with the anode of the refrigeration sheet; the temperature controller is powered by the power adapter, is connected with the coil part, the temperature probe and the anode of the cooling fan, and controls whether to provide a driving level signal for the coil part or not according to a temperature value fed back by the temperature probe; the temperature controller is provided with at least two control signal output ports connected with the anode of the cooling fan and used for outputting control signals with different sizes, and the corresponding control signal output ports are controlled to output control signals to the cooling fan according to the temperature value fed back by the temperature probe so as to control the rotating speed of the cooling fan.

Furthermore, the electronic refrigeration device further comprises a manual switch, the manual switch is connected with the anode of the power adapter, and the power adapter supplies power to the direct current relay and the temperature controller through the manual switch.

Furthermore, the electronic refrigeration device also comprises an indicator light which is connected between the manual switch and the negative pole of the power adapter.

Furthermore, a heat dissipation module is arranged in the direct current relay; the model of the temperature controller is XMT 7100.

Further, the coil part of the direct current relay has a coil positive terminal and a coil negative terminal; the 1 st port of the temperature controller is an anode input port, the 2 nd port is a cathode input port, and the 1 st port and the 2 nd port are respectively connected with the anode and the cathode of the power adapter; the 3 rd port of the temperature controller is vacant; the 4 th port and the 5 th port of the temperature controller are two control signal output ports, the 5 th port is directly connected with the anode of the power adapter and the anode of the cooling fan, and the 4 th port is connected with the anode of the cooling fan through a divider resistor; the 6 th port of the temperature controller is a galvanic couple negative electrode end, the 7 th port is a galvanic couple positive electrode end, and the 6 th port and the 7 th port are respectively connected with the negative electrode and the positive electrode of the temperature probe; a resistance type temperature sensor is connected between the 8 th port and the 7 th port of the temperature controller; and the 9 th port of the temperature controller is a negative driving level signal end, and the 10 th port of the temperature controller is a positive driving level signal end which is respectively connected with the coil negative end and the coil positive end.

Furthermore, the refrigeration piece is a semiconductor refrigeration piece.

Further, the number of the refrigeration pieces is two.

Further, the temperature probe is built in the base.

Furthermore, the electronic refrigeration device is provided with a stainless steel shell, the stainless steel shell is fixed on the base and forms an accommodating space, and the power adapter, the refrigeration module, the direct current relay and the temperature controller are located in the accommodating space.

Furthermore, the upper part of the accommodating space is provided with an air inlet, and the lower part of the accommodating space is provided with an air outlet.

The utility model provides an electronic refrigeration device adopts the temperature controller to realize the accurate accuse temperature to the base, at first sets up and is used for the refrigerated refrigeration piece of base, sets up the temperature controller again and gives this refrigeration piece power supply through a direct current relay, and temperature probe on the base feeds back the temperature of base to the temperature controller in real time, and the temperature controller is again according to the temperature value control of feedback whether to supply power for the refrigeration piece through direct current relay to the temperature that can guarantee the base maintains at certain within range. And, the temperature controller can also control radiator fan's rotational speed according to the temperature value of feedback, can control radiator fan slow speed when the temperature of base is close the standard temperature that sets up and rotate, otherwise control radiator fan fast speed and rotate, help prolonging radiator fan's life and noise reduction.

Drawings

Fig. 1 is a schematic structural diagram of an electronic refrigeration device provided by the present invention.

Fig. 2 is a schematic side view of a refrigeration module provided by the present invention.

Fig. 3 is a schematic top view of a refrigeration module provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, 2 and 3 together, the utility model provides an electronic refrigerating device includes power adapter 1, refrigeration module 2, dc relay 3 and the temperature controller 4 that is used for the power supply at least, and wherein, refrigeration module 2 includes base 21, refrigeration piece 22, radiator 23, radiator fan 24 and temperature probe 25. This electron refrigerating plant is arranged in refrigerating the article of placing in the refrigeration container, during the concrete use, places the refrigeration container on base 21 to contact with base 21, base 21 and refrigeration container all select for use the material that the heat conductivility is good to make. The articles to be refrigerated can be hair follicle tissue cells, insulin and the like, and the refrigeration container can be designed into various shapes suitable for placing the articles to be refrigerated, such as a slender groove body, a box body and the like.

Specifically, the base 21 in the refrigeration module 2 is used for directly contacting with a refrigeration container, the refrigeration sheet 22 is used for refrigerating the base 21, the radiator 23 is used for dissipating heat of the refrigeration sheet 22, and the heat dissipated by the radiator is drawn away by the cooling fan 24. The refrigerating sheet 22, the radiator 23 and the cooling fan 24 are arranged in sequence, and particularly, the refrigerating sheet 22 is preferably directly attached to the base. The temperature probe 25 is arranged on the base 21 and used for detecting the temperature of the base 21 in real time and feeding back the temperature to the temperature controller 4. The negative pole of refrigeration piece 22, radiator fan 24's negative pole all are connected with the negative pole of power adapter 1, and positive pole connected mode is then connected to direct current relay 3 and temperature controller 4 on, the controlled work of being convenient for. The temperature probe 25 can be directly embedded in the base 21, and the positive and negative leads are led out of the base 21, so that the real temperature of the base 21 can be detected most accurately.

The dc relay 3 has a coil portion including a positive contact a1 and a negative contact a2, a common terminal T1, a normally open contact L1, and a normally closed contact, not shown, inside the dc relay 3. When the coil part is electrified, the common terminal T1 is short-circuited with the normally closed contact, and when the coil part is electrified, the common terminal T1 is short-circuited with the normally open contact L1, that is, the common terminal T1 is short-circuited with the normally open contact L1 when the coil part is driven, and is open-circuited when the coil part is not driven. Public end T1 is connected with power adapter 1's positive pole, and normally open contact L1 is connected with the positive pole of refrigeration piece 22, and when coil part circular telegram was driven like this, power adapter 1's positive pole passed through the route between DC relay 3's public end T1 and the normally open contact L1 for refrigeration piece 22 supplies power, forms the power supply circuit, and refrigeration piece 22 can begin to work, refrigerates base 21.

The temperature controller 4 is powered by the power adapter 1, and is connected with the coil part of the direct current relay 3, the temperature probe 25 and the anode of the cooling fan 24, whether the temperature value fed back by the temperature probe 25 is supplied or not is controlled, specifically, a standard temperature value serving as a reference can be set in the temperature controller 4, the temperature value fed back by the temperature probe 25 in real time is compared with the standard temperature value, and whether a driving level signal is supplied to the coil part of the direct current relay 3 or not is determined according to a comparison result.

In addition, the temperature controller 4 has at least two control signal output ports connected to the anode of the cooling fan, and is configured to output control signals of different sizes, and control the corresponding control signal output ports to output control signals to the cooling fan 24 according to the temperature value fed back by the temperature probe 25, so as to control the rotation speed of the cooling fan. For example, when the temperature of the base 21 is close to the set standard temperature, the port outputting a smaller control signal may control the cooling fan 24 to rotate slowly, otherwise, the port outputting a larger control signal may control the cooling fan 24 to rotate rapidly, which may help to prolong the service life of the cooling fan 24 and reduce noise.

Furthermore, the electronic refrigeration device further comprises a manual switch 5 connected with the positive electrode of the power adapter 1, and the power adapter 1 supplies power to the direct current relay 3 and the temperature controller 4 through the manual switch 5. In addition, an indicator light 6 may be connected between the manual switch 5 and the negative electrode of the power adapter 1 for indicating the current working state of the electronic refrigeration device, such as whether the refrigeration sheet 22 is currently refrigerating, whether the cooling fan 24 rotates fast or slowly, and the like.

Refrigeration piece 22 can realize the refrigeration through conventional compressor, but the volume can be very huge, is unsuitable to be used in small-size workstation and room, does not have portable performance simultaneously, and it is very big to compress to the energy consumption moreover, therefore, as preferred, refrigeration piece 22 chooses for use the semiconductor refrigeration piece, helps realizing electronic refrigeration device's miniaturization, and portable performance and mobility are fine, and power consumption is less simultaneously, does not need the refrigerant, and is safe environmental protection. For example, the cooling capacity of 120W, the required specification of the power adapter 1 is only 12V and 11.5A, and the semiconductor cooling plate can continuously operate for a long time without failure, and the temperature can be controlled within the target value +/-1 ℃ even if the semiconductor cooling plate continuously operates for 24 hours a day. In addition, the number of the cooling fins 22 may be two, which may increase the cooling capacity.

The utility model provides an electronic refrigeration device still has a stainless steel shell, and this stainless steel shell fixes on base 21 and forms an accommodation space, and power adapter 1, refrigeration module 2, direct current relay 3, temperature controller 4 are located this accommodation space. The stainless steel tube shell is integrally welded, and the sanitary and clean requirements of the medical instrument shell are met. The upper portion of this accommodation space still can further set up the air intake, and the lower part sets up the air outlet, further improves refrigeration efficiency, and for example the air intake can set up at the top of stainless steel shell, and the air outlet setting is in the bottom corner of stainless steel shell.

Preferably, the direct current relay 3 is internally provided with a heat dissipation module, so that a good heat dissipation effect is beneficial to prolonging the service life of the electronic refrigeration device, and the electronic refrigeration device is not easy to crash.

As an example, the thermostat 4 has model XMT7100, and the model XMT7100 has 10 ports, and the connection mode with other parts is as shown in fig. 1, where the 1 st port is a positive input port, and the 2 nd port is a negative input port, and is connected to the positive electrode and the negative electrode of the power adapter 1 respectively. The 3 rd port is empty. The 4 th port and the 5 th port are two control signal output ports, the 5 th port is directly connected with the anode of the power adapter 1 and the anode of the cooling fan 24, the 4 th port is connected with the anode of the cooling fan 24 through a voltage dividing resistor, the 4 th port and the 5 th port are actually directly connected to the anode of the power adapter 1, the difference is that the 5 th port directly supplies power for the cooling fan 24, which is suitable for the condition that the cooling fan 24 rotates fast, and the 4 th port supplies power for the cooling fan 24 after voltage division, so that the voltage of the cooling fan 24 is reduced, which is suitable for the condition that the cooling fan 24 rotates slowly.

The 6 th port is a galvanic couple negative electrode end, the 7 th port is a galvanic couple positive electrode end, and the 6 th port and the 7 th port are respectively connected with the negative electrode and the positive electrode of the temperature probe 25; a resistance type temperature sensor is connected between the 8 th port and the 7 th port. The 9 th port is a negative drive level signal terminal, and the 10 th port is a positive drive level signal terminal, which are connected to the coil negative terminal a2 and the coil positive terminal a1 of the coil portion of the dc relay 3, respectively.

The working principle of the XMT7100 temperature controller is as follows: the refrigerating plate 22 is responsible for refrigerating the base 21, the temperature probe 25 on the base 21 feeds back the actual temperature value to the XMT7100 thermostat 4 in real time, and the XMT7100 thermostat 4 compares the actual temperature value with the set standard temperature value. If the set standard value is not reached, the 9 th port and the 10 th port of the XMT7100 thermostat 4 continue to output driving level signals to the coil cathode end A2 and the coil anode end A1 of the direct current relay 3, the refrigeration sheet 22 continues to work at the moment until the actual temperature value reaches the set standard temperature value, after the actual temperature value reaches the set standard temperature value, the 9 th port and the 10 th port of the XMT7100 thermostat 4 stop outputting the driving level signals, and the refrigeration sheet 22 stops working. When the cooling fin 22 works, the cooling fan 24 rotates continuously to draw heat transferred from the cooling fin 22 through the radiator 23, so as to ensure that the cooling fin 22 can work continuously.

The XMT7100 thermostat 4 can set an internal minimum temperature AL1 and an internal maximum temperature AH1 to control the fast rotation and slow rotation of the cooling fan 24, for example, the set standard temperature is 4 ℃, then the minimum temperature AL1 can be set to 4, and the maximum temperature AH1 can be set to 5, when the actual temperature is higher than 5 ℃, the XMT7100 outputs a control signal through the 5 th port to control the cooling fan 24 to rotate fast, and when the actual temperature is lower than 5 ℃, the XMT7100 outputs a control signal through the 4 th port to control the cooling fan 24 to rotate slowly from fast rotation, so as to keep the cooling fan 24 operating quietly, control noise, and prolong the life of the cooling fan 24.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An electronic refrigeration device for refrigerating an article placed in a refrigeration container, the electronic refrigeration device comprising:

a power adapter for supplying power;

the refrigeration module comprises a base, a refrigeration sheet, a radiator and a cooling fan, wherein the base is used for being in contact with the refrigeration container, the refrigeration sheet is used for refrigerating the base, the radiator is used for radiating heat of the refrigeration sheet, and the cooling fan is used for pumping away the heat radiated by the radiator; the refrigeration sheet, the radiator and the cooling fan are sequentially arranged, and a temperature probe is arranged on the base; the negative electrode of the refrigerating sheet and the negative electrode of the cooling fan are both connected with the negative electrode of the power adapter;

the direct current relay is provided with a coil part, a common end and a normally open contact, wherein the common end and the normally open contact are in short circuit when the coil part is driven and are in open circuit when the coil part is not driven; the public end is connected with the anode of the power adapter, and the normally open contact is connected with the anode of the refrigeration sheet;

the temperature controller is powered by the power adapter, is connected with the coil part, the temperature probe and the anode of the cooling fan, and controls whether to provide a driving level signal for the coil part or not according to a temperature value fed back by the temperature probe; the temperature controller is provided with at least two control signal output ports connected with the anode of the cooling fan and used for outputting control signals with different sizes, and the corresponding control signal output ports are controlled to output control signals to the cooling fan according to the temperature value fed back by the temperature probe so as to control the rotating speed of the cooling fan.

2. The electronic cooling device as claimed in claim 1, further comprising a manual switch connected to the positive terminal of the power adapter, wherein the power adapter supplies power to the dc relay and the thermostat through the manual switch.

3. The electronic cooling device as claimed in claim 2, further comprising an indicator light connected between the manual switch and the negative pole of the power adapter.

4. The electronic cooling device as claimed in claim 1, wherein the dc relay has a heat dissipation module built therein; the model of the temperature controller is XMT 7100.

5. The electronic cooling device according to claim 4, wherein the coil portion of the direct current relay has a coil positive terminal and a coil negative terminal;

the 1 st port of the temperature controller is an anode input port, the 2 nd port is a cathode input port, and the 1 st port and the 2 nd port are respectively connected with the anode and the cathode of the power adapter; the 3 rd port of the temperature controller is vacant; the 4 th port and the 5 th port of the temperature controller are two control signal output ports, the 5 th port is directly connected with the anode of the power adapter and the anode of the cooling fan, and the 4 th port is connected with the anode of the cooling fan through a divider resistor; the 6 th port of the temperature controller is a galvanic couple negative electrode end, the 7 th port is a galvanic couple positive electrode end, and the 6 th port and the 7 th port are respectively connected with the negative electrode and the positive electrode of the temperature probe; a resistance type temperature sensor is connected between the 8 th port and the 7 th port of the temperature controller; and the 9 th port of the temperature controller is a negative driving level signal end, and the 10 th port of the temperature controller is a positive driving level signal end which is respectively connected with the coil negative end and the coil positive end.

6. The electronic cooling device of claim 1, wherein the cooling fins are semiconductor cooling fins.

7. The electronic cooling device as claimed in claim 1, wherein there are two cooling fins.

8. The electronic cooling device of claim 1, wherein the temperature probe is built into the base.

9. The electronic cooling device as claimed in claim 1, wherein the electronic cooling device has a stainless steel casing fixed on the base and forming a receiving space, and the power adapter, the cooling module, the dc relay and the thermostat are located in the receiving space.

10. The electronic cooling device as claimed in claim 9, wherein the upper portion of the accommodating space is provided with an air inlet, and the lower portion of the accommodating space is provided with an air outlet.