A temperature protection system for medical preservation box relay after adhesion

Abstract

The utility model discloses a temperature protection system after the relay of a medical preservation box is adhered, comprising a single chip microcomputer, a refrigeration relay, an anti-overcooling relay, and a refrigeration compressor; the refrigeration relay is a double-contact relay; the anti-overcooling relay is a three-contact relay; the A contact of the refrigeration relay is electrically connected to the E contact of the anti-overcooling relay, the B contact of the refrigeration relay is electrically connected to the refrigeration compressor, the refrigeration compressor is electrically connected to the neutral line; the C contact of the anti-overcooling relay is electrically connected to the live line, the D contact of the anti-overcooling relay is electrically connected to the neutral line; the refrigeration relay and the anti-overcooling relay are both electrically connected to the single chip microcomputer. The temperature protection system after the relay of a medical preservation box is adhered can realize emergency refrigeration in the medical preservation box after the refrigeration relay is adhered, avoid the system from pulling the temperature all the time, and prevent the temperature in the medical preservation box from getting out of control, thereby protecting the stored products.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration systems for medical preservation boxes, and in particular relates to a temperature protection system for medical preservation boxes after relay adhesion. Background Art

[0002] Most of the existing refrigeration systems of medical preservation boxes use refrigeration relays to electrically connect the compressor to control the power supply of the compressor. This is low-cost and relatively reliable. However, due to the uncertainty of relay quality on the market, during the refrigeration process, it is often encountered that the refrigeration relay is stuck, causing the system to keep warm, which in turn causes the temperature in the medical preservation box to get out of control and exceed the storage temperature of the medical storage products, causing great hidden dangers and losses. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide a temperature protection system for a medical preservation box relay after adhesion.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A temperature protection system for a medical preservation box after relay adhesion, comprising a single chip microcomputer, a refrigeration relay, an overcooling protection relay, and a refrigeration compressor;

[0006] The refrigeration relay is a double-contact relay;

[0007] The anti-overcooling relay is a three-contact relay;

[0008] The A contact of the refrigeration relay is electrically connected to the E contact of the overcooling protection relay, the B contact of the refrigeration relay is electrically connected to the refrigeration compressor, and the refrigeration compressor is electrically connected to the neutral line;

[0009] The C contact of the anti-overcooling relay is electrically connected to the live wire, and the D contact of the anti-overcooling relay is electrically connected to the neutral wire;

[0010] The refrigeration relay and the overcooling prevention relay are both electrically connected to the single chip microcomputer.

[0011] Preferably, it also includes a temperature sensor, which is arranged inside the medical preservation box.

[0012] Preferably, the temperature sensor is electrically connected to a single-chip microcomputer, and the single-chip microcomputer acquires a temperature signal collected by the temperature sensor.

[0013] Preferably, the temperature sensor is an NTC temperature sensor.

[0014] Preferably, the temperature sensor is a PT100 temperature sensor.

[0015] Preferably, an alarm device is provided on the connection circuit between the D contact of the anti-overcooling relay and the neutral line.

[0016] Preferably, the alarm device includes a voice announcer.

[0017] Preferably, the alarm device also includes a flashing light.

[0018] The beneficial effects of the utility model are:

[0019] (1) The temperature protection system for a medical preservation box after the relay of the utility model is stuck can realize emergency refrigeration in the medical preservation box after the refrigeration relay is stuck, thereby preventing the system from constantly pulling the temperature and preventing the temperature in the medical preservation box from getting out of control, thereby protecting the stored products.

[0020] (2) The utility model can prompt the activation of the overcooling protection by setting the alarm device, so that the maintenance engineer can make a judgment and perform maintenance in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0022] Figure 1 This is a connection diagram of the temperature protection system of the utility model medical preservation box after the relay is bonded;

[0023] 1- temperature sensor, 2- single chip microcomputer, 3- refrigeration relay, 4- overcooling protection relay, 5- refrigeration compressor, 6- alarm device. DETAILED DESCRIPTION

[0024] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", "top", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

[0027] In the present utility model, terms such as "connected" and "connection" should be understood in a broad sense, indicating that the connection can be fixed, integral or detachable; it can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meaning of the above terms in the present utility model can be determined according to specific circumstances, and it cannot be understood as a limitation of the present utility model.

[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0029] like Figure 1 As shown, a temperature protection system for a medical preservation box after relay adhesion includes a single chip microcomputer 2, a refrigeration relay 3, an overcooling prevention relay 4, and a refrigeration compressor 5;

[0030] The refrigeration relay 3 is a double-contact relay;

[0031] The anti-overcooling relay 4 is a three-contact relay;

[0032] The A contact of the refrigeration relay 3 is electrically connected to the E contact of the overcooling prevention relay 4, the B contact of the refrigeration relay 3 is electrically connected to the refrigeration compressor 5, and the refrigeration compressor 5 is electrically connected to the neutral line;

[0033] The C contact of the anti-overcooling relay 4 is electrically connected to the live wire, and the D contact of the anti-overcooling relay 4 is electrically connected to the neutral wire;

[0034] The refrigeration relay 3 and the overcooling prevention relay 4 are both electrically connected to the single chip microcomputer 2 .

[0035] Preferably, it further comprises a temperature sensor 1, and the temperature sensor 1 is arranged inside the medical preservation box.

[0036] Preferably, the temperature sensor 1 is electrically connected to the single chip microcomputer 2, and the single chip microcomputer 2 obtains the temperature signal collected by the temperature sensor 1. The single chip microcomputer 2 obtains the temperature signal collected by the temperature sensor 1 and controls the refrigeration relay 3 and the overcooling prevention relay 4.

[0037] Preferably, the temperature sensor 1 is an NTC temperature sensor.

[0038] Preferably, the temperature sensor 1 is a PT100 temperature sensor.

[0039] Preferably, an alarm device 6 is provided on the connection circuit between the D contact of the anti-overcooling relay 4 and the neutral line.

[0040] Preferably, the alarm device 6 includes a voice announcer.

[0041] Preferably, the alarm device 6 also includes a flashing light.

[0042] A temperature protection system for a medical preservation box relay after adhesion, the specific implementation of which is as follows:

[0043] When the refrigeration compressor 5 works normally, the A and B contacts of the refrigeration relay 3 are connected, and the C and E contacts of the overcooling prevention relay 4 are connected.

[0044] When the refrigeration relay 3 is not adhered, when the temperature sensor 1 detects that the temperature in the medical preservation box is lower than the lowest value of the normal setting range, the single-chip computer 2 controls the A and B contacts of the refrigeration relay 3 to be disconnected, and the refrigeration compressor 5 is powered off to suppress the temperature in the medical preservation box from dropping again; thereafter, the temperature in the medical preservation box rises, and when the temperature sensor 1 detects that the temperature in the medical preservation box is higher than the highest value of the normal setting range, the single-chip computer 2 controls the A and B contacts of the refrigeration relay 3 to be connected, and the refrigeration compressor 3 is powered on to suppress the temperature increase in the medical preservation box, thereby ensuring that the temperature in the medical preservation box is constant within the normal setting range.

[0045] When the refrigeration relay 3 is stuck, when the temperature sensor 1 detects that the temperature in the medical preservation box is lower than the minimum value of the normal setting range, the single chip microcomputer 2 controls the A and B contacts of the refrigeration relay 3 to be disconnected, and the refrigeration compressor 5 is expected to be powered off to prevent the temperature in the medical preservation box from dropping again. However, due to the adhesion of the A and B contacts of the refrigeration relay 3, the refrigeration compressor 5 is still powered on, and the temperature in the medical preservation box continues to drop. Thereafter, when the temperature sensor 1 detects that the temperature in the medical preservation box is lower than the minimum value of the supercooling temperature setting range, the single chip microcomputer 2 controls the C and E contacts of the anti-supercooling relay 4 to be disconnected and the C and D contacts to be connected, thereby disconnecting the power supply circuit of the refrigeration compressor 5 and connecting the notification The alarm circuit is used to prevent the temperature in the medical storage box from decreasing again by cutting off the power supply of the refrigeration compressor 5. At the same time, the alarm device 6 broadcasts the voice of the refrigeration relay adhesion or the flashing light flashes to inform the user and the maintenance engineer that the anti-overcooling is enabled, so that the maintenance engineer can make a judgment and perform maintenance in time; thereafter, the temperature in the medical storage box rises. When the temperature sensor 1 detects that the temperature in the medical storage box is higher than the highest value of the overcooling temperature setting range, the single-chip computer 2 controls the C and E contacts of the anti-overcooling relay 4 to be connected and the C and D contacts to be disconnected, thereby connecting the power supply circuit of the refrigeration compressor 5 and disconnecting the alarm circuit, and suppressing the temperature rise in the medical storage box by powering on the refrigeration compressor 5, thereby ensuring that the temperature in the medical storage box will not get out of control. The above realizes the emergency refrigeration in the medical storage box after the refrigeration relay 3 is adhered, avoids the system from pulling the temperature all the time, and prevents the temperature in the medical storage box from getting out of control, thereby protecting the stored products.

[0046] Although the above describes the specific implementation mode of the utility model in combination with the accompanying drawings, it is not a limitation of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the protection scope of the utility model.

Claims

1. A temperature protection system for a medical preservation box relay after adhesion, characterized in that: Including single chip microcomputer, refrigeration relay, overcooling protection relay, refrigeration compressor; The refrigeration relay is a double-contact relay; The anti-overcooling relay is a three-contact relay; The A contact of the refrigeration relay is electrically connected to the E contact of the overcooling protection relay, the B contact of the refrigeration relay is electrically connected to the refrigeration compressor, and the refrigeration compressor is electrically connected to the neutral line; The C contact of the anti-overcooling relay is electrically connected to the live wire, and the D contact of the anti-overcooling relay is electrically connected to the neutral wire; The refrigeration relay and the overcooling prevention relay are both electrically connected to the single chip microcomputer.

2. The temperature protection system for the medical preservation box relay after adhesion as claimed in claim 1, characterized in that: The device also comprises a temperature sensor, which is arranged inside the medical preservation box.

3. The temperature protection system for the medical preservation box relay after adhesion as claimed in claim 2, characterized in that: The temperature sensor is electrically connected to the single chip microcomputer, and the single chip microcomputer obtains the temperature signal collected by the temperature sensor.

4. The temperature protection system for the medical preservation box relay after adhesion as claimed in claim 2, characterized in that: The temperature sensor is an NTC temperature sensor.

5. The temperature protection system for the medical preservation box relay after adhesion as claimed in claim 2, characterized in that: The temperature sensor is a PT100 temperature sensor.

6. The temperature protection system for the medical preservation box relay after adhesion as claimed in claim 1, characterized in that: An alarm device is provided on the connection circuit between the D contact of the anti-overcooling relay and the neutral line.

7. The temperature protection system for the medical preservation box relay after adhesion as claimed in claim 6, characterized in that: The alarm device comprises a voice announcer.

8. The temperature protection system for the medical preservation box relay after adhesion as claimed in claim 7, characterized in that: The warning device also includes a flashing light.

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