Low-temperature oxygen control system

Abstract

The utility model relates to the field of medical oxygen equipment, and discloses a low-temperature oxygen control system which comprises a controller, a semiconductor chilling plate, a cooling liquid circulating system and an oxygen pipeline, the semiconductor chilling plate exchanges heat with the cooling liquid circulation system to provide cooling capacity for the cooling liquid circulation system; the oxygen pipeline is located in the cooling liquid circulation system and conducts heat exchange to reduce the temperature in the oxygen pipeline, a temperature sensor is arranged in the oxygen pipeline and connected with the controller, and the controller controls the working power of the semiconductor chilling plate according to data of the temperature sensor. The control system has the advantages of reliable control, low noise, controllable power and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of medical oxygen equipment field, mainly low temperature oxygen control system. BACKGROUND

[0002] In the industry, medical and scientific research field, the precise control gas temperature is an important technical requirement.For example, in the three medical fields of neurobiology, bioenergetics, medical immunology, the temperature of oxygen needs to be controlled in a specific low range in special environment.The traditional cooling method usually uses compressor refrigeration or liquid nitrogen cooling, but these methods have problems such as high energy consumption, complex equipment, high maintenance cost, etc.As a kind of efficient and compact refrigeration technology, semiconductor refrigeration sheet has the advantages of no noise, no vibration, easy to control, etc., but its application in low-temperature gas control still needs further optimization.

[0003] Although Chinese patent CN2173924Y discloses a multi-purpose portable low-temperature preservation box, but it has not been applied in the medical field so far, and the medical temperature control requirement is very high, so there is no balance in the existing scheme and energy consumption scheme. UTILITY MODEL CONTENT

[0004] The utility model provides low temperature oxygen control system in view of the shortcoming in the prior art.

[0005] The low-temperature oxygen control system comprises a controller, a semiconductor refrigeration sheet and a cooling liquid circulation system, and further comprises an oxygen pipeline; the semiconductor refrigeration sheet exchanges heat with the cooling liquid circulation system to provide cold energy for the cooling liquid circulation system; the oxygen pipeline is located in the cooling liquid circulation system and exchanges heat to reduce the temperature in the oxygen pipeline; a temperature sensor is arranged in the oxygen pipeline, and the temperature sensor is connected with the controller; the controller controls the working power of the semiconductor refrigeration sheet according to the data of the temperature sensor.

[0006] As a preferred, the cooling circulation system comprises a cooling liquid pipeline, a circulating pump and a heat exchanger; the cooling liquid pipeline and the semiconductor refrigeration sheet exchange heat through the heat exchanger; and the circulating pump is connected with the controller.

[0007] As a preferred, it further comprises a cooling liquid pool, and the cooling liquid pool is provided with cooling liquid; the cooling liquid in the cooling liquid pool is circulated and heat-exchanged to refrigerate by the circulating pump; and the oxygen pipeline is laid in the cooling liquid pool.

[0008] As a preferred, the oxygen pipeline is arranged in an S shape.

[0009] As a preferred, the semiconductor refrigeration sheet comprises a plurality of refrigeration units, each refrigeration unit is connected with a refrigeration switch, each refrigeration switch is connected with the controller, and the refrigeration switches are connected in parallel.

[0010] As a preferred, at least one of the refrigeration switches is a temperature control switch.

[0011] As a preferred, there are three groups of refrigeration units in total, the refrigeration switch of one group of refrigeration units is an electric control switch, the refrigeration switches of the remaining two groups of refrigeration units are temperature control switches, and the controller controls the opening and closing of the temperature control switches according to the data collected by the temperature sensor.

[0012] Compared with the prior art, the medical oxygen in the scheme can be temperature-controlled to always maintain a set temperature state. Moreover, energy saving is compatible. At the same time, the combination of the semiconductor refrigeration sheet and the cooling liquid realizes accurate control of the temperature of the oxygen in the pipeline. Through optimization of the design of the heat exchanger, the cooling efficiency is improved, and the energy consumption is reduced. The overall system structure is compact, easy to install and maintain, and suitable for various application scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole control schematic diagram.

[0014] Figure 2 It is a controller control circuit diagram.

[0015] The technical name of the reference numeral in the figure is: 1 - controller, 2 - semiconductor refrigeration sheet, 3 - cooling liquid circulation system, 4 - oxygen pipeline, 5 - temperature sensor, 6 - cooling liquid pipeline, 7 - circulating pump, 8 - refrigeration unit, 9 - refrigeration switch, 11 - temperature control switch. DETAILED DESCRIPTION

[0016] The utility model will be described in further detail below in combination with the drawings and examples.

[0017] Example 1

[0018] The low-temperature oxygen control system 1 comprises a controller 1, a semiconductor refrigeration sheet 2 and a cooling liquid circulation system 3, and further comprises an oxygen pipeline 4; the semiconductor refrigeration sheet 2 exchanges heat with the cooling liquid circulation system 3 to provide cold energy for the cooling liquid circulation system 3; the oxygen pipeline 4 is located in the cooling liquid circulation system 3 and exchanges heat to reduce the temperature in the oxygen pipeline 4; a temperature sensor 5 is arranged in the oxygen pipeline 4, and the temperature sensor 5 is connected with the controller 1; the controller 1 controls the working power of the semiconductor refrigeration sheet 2 according to the data of the temperature sensor 5. The semiconductor refrigeration sheet 2, which is abbreviated as TEC, has the advantages of no noise, no vibration and easy control. In the scheme, the semiconductor refrigeration sheet 2 is used to generate cold energy, the cold end thereof is connected with a heat exchanger, and the hot end thereof is cooled by a radiator and a fan. The heat exchanger belongs to part of the cooling liquid circulation system 3, and the cold energy of the semiconductor refrigeration sheet 2 is transmitted to the cooling circulation system to provide cold energy for the system.

[0019] Specifically, the cooling circulation system comprises a cooling liquid pipeline 6, a circulating pump 7 and a heat exchanger, the cooling liquid pipeline 6 and the semiconductor refrigeration sheet 2 exchange heat through the heat exchanger, and the circulating pump 7 is connected with the controller 1. Specifically, it further comprises a cooling liquid pool, the cooling liquid pool is provided with cooling liquid, the cooling liquid in the cooling liquid pool is circulated and heat-exchanged to refrigerate by the circulating pump 7, and the oxygen pipeline 4 is laid in the cooling liquid pool. The circulating pump 7 is connected with the controller 1, and the controller 1 controls the power of the circulating pump 7 according to actual needs.

[0020] The oxygen pipeline 4 is arranged in an S shape. The S-shaped oxygen pipeline 4 can greatly increase the contact area of the pipeline and the cooling liquid pool, thereby achieving effective cooling and ensuring the stability of the oxygen temperature.

[0021] In order to ensure the refrigeration effect and the control of energy consumption, the semiconductor refrigeration sheet 2 comprises a plurality of refrigeration units 8, each of which is connected with a refrigeration switch 9, each of the refrigeration switches 9 is connected with the controller, and the refrigeration switches 9 are arranged in parallel. Each of the refrigeration units 8 is refrigerated by the semiconductor refrigeration sheet 2.

[0022] The refrigeration switch 9 is at least one temperature control switch 11. In this embodiment, there are three groups of refrigeration units 8 in total, the refrigeration switch 9 of one group of refrigeration units 8 is an electric control switch, and the refrigeration switches 9 of the other two groups of refrigeration units 8 are temperature control switches 11. The controller 1 controls the opening and closing of the temperature control switches 11 according to the data collected by the temperature sensor 5. Under normal working conditions, the common switch is opened, and the connected refrigeration unit 8 performs refrigeration. At the same time, the temperature sensor 5 monitors the pipeline temperature in real time. When the temperature of the oxygen pipeline 4 exceeds the set temperature range, the temperature control switch 11 opens the second group of refrigeration units 8 to perform refrigeration, and the controller 1 adjusts the power of the circulating pump 7 to increase the flow rate. When it still does not meet the requirements, the temperature control switch 11 opens the third group of refrigeration units 8. When the temperature meets the set range or is even lower than the minimum temperature, the temperature control switch 11 is turned off to achieve energy saving and consumption reduction, and the power of the circulating pump 7 is adjusted.

[0023] The medical oxygen of the present application can be controlled in temperature to keep it at a set temperature at all times. Moreover, it is compatible with energy saving. At the same time, the combination of the semiconductor refrigeration sheet 2 and the cooling liquid achieves accurate control of the temperature of the oxygen in the pipeline. Through the optimization of the design of the heat exchanger, the cooling efficiency is improved, and the energy consumption is reduced. The overall system structure is compact, easy to install and maintain, and suitable for various application scenarios.

[0024] Embodiment 2

[0025] The difference between this embodiment and embodiment 1 is that the controller 1 controls the circulation speed of the cooling liquid by controlling the rotating speed of the circulating pump 7.

[0026] Embodiment 3

[0027] The difference between this example and example 1 is that the cooling pool is a sealed space.

Claims

1. Cryogenic oxygen control system, characterized in that: The application relates to a cooling device for oxygen pipeline, which comprises a controller (1), a semiconductor refrigerating sheet (2) and a cooling liquid circulating system (3), and further comprises an oxygen pipeline (4); the semiconductor refrigerating sheet (2) exchanges heat with the cooling liquid circulating system (3) to provide cold energy for the cooling liquid circulating system (3); the oxygen pipeline (4) is arranged in the cooling liquid circulating system (3) and exchanges heat to reduce the temperature in the oxygen pipeline (4); a temperature sensor (5) is arranged in the oxygen pipeline (4) and connected with the controller (1); the controller (1) controls the working power of the semiconductor refrigerating sheet (2) according to the data of the temperature sensor (5).

2. The cryogenic oxygen control system of claim 1, wherein: The cooling circulating system comprises a cooling liquid pipeline (6), a circulating pump (7) and a heat exchanger; the cooling liquid pipeline (6) and the semiconductor refrigerating sheet (2) exchange heat through the heat exchanger; and the circulating pump (7) is connected with the controller (1).

3. The cryogenic oxygen control system of claim 2, wherein: The application further comprises a cooling liquid pool, wherein cooling liquid is arranged in the cooling liquid pool; the cooling liquid in the cooling liquid pool is circulated and heat-exchanged to be refrigerated by the circulating pump (7); and the oxygen pipeline (4) is arranged in the cooling liquid pool.

4. The cryogenic oxygen control system of claim 3, wherein: The oxygen pipeline (4) is arranged in an S shape.

5. The cryogenic oxygen control system of claim 2, wherein: The semiconductor refrigerating sheet (2) comprises a plurality of groups of refrigerating units (8); each group of refrigerating units (8) is connected with a refrigerating switch (9); each group of refrigerating switches (9) is connected with the controller; and the refrigerating switches (9) are arranged in parallel.

6. The cryogenic oxygen control system of claim 5, wherein: At least one of the refrigerating switches (9) is a temperature control switch (11).

7. The cryogenic oxygen control system of claim 6, wherein: There are three groups of refrigerating units (8); the refrigerating switch (9) of one group of refrigerating units (8) is an electric control switch; the refrigerating switches (9) of the other two groups of refrigerating units (8) are temperature control switches (11); and the controller (1) controls the opening and closing of the temperature control switches (11) according to the data collected by the temperature sensor (5).

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