A system based on refrigerant control in a temperature chamber

Abstract

This utility model discloses a system based on refrigerant control in a temperature chamber, including a temperature chamber with a temperature sensor installed on the inner side wall. An internal refrigerant storage tank is installed inside the temperature chamber, and a pressure sensor is installed inside the internal refrigerant storage tank. The inlet of the internal refrigerant storage tank is connected to the outlet of an external refrigerant storage tank via a first connecting pipe, and the outlet of the internal refrigerant storage tank is connected to the inlet of the external refrigerant storage tank via a second connecting pipe. An inlet control valve is installed in the middle of the first connecting pipe, and the inlet control valve is electrically connected to the refrigerant core control system. An outlet control valve is installed in the middle of the second connecting pipe, and the outlet control valve is electrically connected to the refrigerant core control system. The refrigerant core control system is connected to the pressure sensor and the temperature sensor via data lines. This system requires no manual operation, has a high degree of automation, and is less prone to temperature chamber malfunctions and equipment damage.

Description

Technical Field

[0001] This utility model relates to the field of refrigerant control technology for incubators, and in particular to a system based on refrigerant control for incubators. Background Technology

[0002] A temperature chamber is a device used to simulate a specific temperature environment and is widely used in biological, medical, and industrial fields. It typically consists of a heating element, a temperature sensor, and a control unit, and can adjust and control the temperature as needed.

[0003] Currently, there are significant shortcomings in the refrigerant management of incubators. In low-temperature environments, refrigerant needs to be added manually, otherwise an alarm will be triggered due to insufficient supply pressure. In high-temperature environments, refrigerant needs to be released manually to avoid overpressure alarms. This manual operation is not only time-consuming and labor-intensive, but also prone to incubator malfunctions and equipment damage, thereby increasing maintenance costs and reducing the accuracy of testing. Therefore, a system based on incubator refrigerant control is proposed to address the above problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A system based on refrigerant control in a temperature chamber includes a temperature chamber with a temperature sensor installed on the inner side wall. An internal refrigerant storage tank is installed inside the temperature chamber, and a pressure sensor is installed inside the internal refrigerant storage tank. The inlet of the internal refrigerant storage tank is connected to the outlet of an external refrigerant storage tank via a first connecting pipe, and the outlet of the internal refrigerant storage tank is connected to the inlet of the external refrigerant storage tank via a second connecting pipe. An inlet control valve is installed in the middle of the first connecting pipe and is electrically connected to the refrigerant core control system. An outlet control valve is installed in the middle of the second connecting pipe and is electrically connected to the refrigerant core control system. The refrigerant core control system is connected to the pressure sensor and the temperature sensor via data lines.

[0005] Preferably, an adjustment module is installed at the connection between the air inlet end of the internal refrigerant tank and the first connecting pipe, and at the connection between the air outlet end of the internal refrigerant tank and the second connecting pipe.

[0006] Preferably, the adjustment module consists of an adjustment frame, a threaded rod, a turntable, a lifting block, an inner partition, an air outlet, a groove, a limiting plate, and a sealing ring.

[0007] Preferably, the middle side of the threaded rod is threadedly connected to the threaded hole at the top of the adjusting frame, the bottom of the threaded rod is fixedly connected to the top of the turntable, the side of the turntable is slidably connected to the side wall of the inner slot at the top of the lifting block, the right side of the lifting block is fitted to the left side of the inner partition, the top of the inner partition is fixed to the inner side of the top of the adjusting frame, the bottom is fixed to the inner side of the bottom of the adjusting frame, the left side of the lifting block is fitted to the right side of the limiting plate, and the top of the limiting plate is fixedly connected to the inner side of the top of the adjusting frame.

[0008] Preferably, the inner partition has an air vent on the inside of the right wall and a groove on the inner side of the bottom end of the inner partition, which is located directly below the lifting block.

[0009] Preferably, a sealing groove is formed on the outer peripheral surface of the lifting block, and a sealing ring resistant to refrigerant corrosion is embedded inside the sealing groove. The sealing ring forms a sealing fit with the inner wall of the inner partition and the inner wall of the limiting plate. When the lifting block descends into the groove, the sealing ring forms a sealing fit with the inner wall of the groove.

[0010] Compared with the prior art, the beneficial effects of this utility model are: (1) This system monitors the temperature of the incubator by using a temperature sensor and detects the pressure of the refrigerant storage tank inside the incubator by using a pressure sensor, thereby determining whether refrigerant needs to be added or released. It does not require manual operation, has a high degree of automation, and is not prone to causing incubator failure and equipment damage.

[0011] (2) The adjustment module can close the connection between the internal refrigerant tank and the connecting pipe when the internal refrigerant tank is replaced, to prevent the refrigerant from leaking out and improve the convenience of replacement. At the same time, the adjustment module can adjust the refrigerant flow speed of the connecting pipe, increasing the flexibility of use. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the front cross-sectional structure of the adjustment module of this utility model.

[0014] The following are the labels in the attached diagram: 1. Temperature chamber; 11. Temperature sensor; 2. Internal refrigerant tank; 21. Pressure sensor; 3. First connecting pipe; 4. Inlet control valve; 5. External refrigerant tank; 6. Second connecting pipe; 7. Outlet control valve; 8. Refrigerant core control system; 9. Adjustment module; 91. Adjustment frame; 92. Threaded rod; 93. Turntable; 94. Lifting block; 95. Inner partition; 96. Outlet hole; 97. Groove; 98. Limiting plate; 99. Sealing ring. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Please see Figure 1-2 This utility model provides an embodiment of a system based on refrigerant control in a temperature chamber, comprising a temperature chamber 1, a temperature sensor 11 installed on the inner side wall of the temperature chamber 1 to detect the internal temperature of the temperature chamber 1, an internal refrigerant storage tank 2 inside the temperature chamber 1, and a pressure sensor 21 installed inside the internal refrigerant storage tank 2 to detect the internal pressure of the internal refrigerant storage tank 2. The inlet of the internal refrigerant storage tank 2 is connected to the outlet of an external refrigerant storage tank 5 through a first connecting pipe 3. Refrigerant from the external refrigerant storage tank 5 enters the internal refrigerant storage tank 2 through the first connecting pipe 3. The outlet of the internal refrigerant storage tank 2 is connected to the external refrigerant storage tank 5 through a second connecting pipe 6. The refrigerant storage tank 5 is connected to the inlet end of the external refrigerant storage tank 2. The refrigerant inside the internal refrigerant storage tank 2 can enter the external refrigerant storage tank 5 through the second connecting pipe 6. The middle end of the first connecting pipe 3 is equipped with an inlet control valve 4, which is electrically connected to the refrigerant core control system 8. The middle end of the second connecting pipe 6 is equipped with an outlet control valve 7, which is also electrically connected to the refrigerant core control system 8. The refrigerant core control system 8 is connected to the pressure sensor 21 and the temperature sensor 11 through data lines. The system monitors the temperature of the incubator 1 through the temperature sensor 11 and detects the pressure of the refrigerant storage tank 2 inside the incubator 1 through the pressure sensor 21 to determine whether refrigerant needs to be added or released. When it is determined that refrigerant needs to be added, the system will close the outlet control and open the inlet control until the refrigerant amount required by the incubator is reached, and then close the inlet control. Conversely, if refrigerant needs to be released, the system will close the inlet control and open the outlet control until the refrigerant amount drops to the required level of the incubator, and then close the outlet control.

[0018] An adjustment module 9 is installed at the connection points between the inlet end of the internal refrigerant tank 2 and the first connecting pipe 3, and at the connection points between the outlet end of the internal refrigerant tank 2 and the second connecting pipe 6. The adjustment module 9 can close the connection point between the internal refrigerant tank 2 and the connecting pipe when the connecting pipe is replaced, to prevent refrigerant from leaking out and improve the convenience of replacement. At the same time, the adjustment module 9 can adjust the refrigerant flow speed of the connecting pipe, increasing the flexibility of use.

[0019] The adjustment module 9 consists of an adjustment frame 91, a threaded rod 92, a turntable 93, a lifting block 94, an inner partition 95, an air outlet 96, a groove 97, a limiting plate 98, and a sealing ring 99. The middle side of the threaded rod 92 is threadedly connected to the threaded hole at the top of the adjustment frame 91. The bottom of the threaded rod 92 is fixedly connected to the top of the turntable 93. The side of the turntable 93 is slidably connected to the side wall of the inner groove at the top of the lifting block 94. Rotating the threaded rod 92 can drive the lifting block 94 to rise and fall. The right side of the lifting block 94 is fitted and connected to the left side of the inner partition 95. The top of the plate 95 is fixed to the inner side of the top of the adjusting frame 91, and the bottom is fixed to the inner side of the bottom of the adjusting frame 91. The left side of the lifting block 94 is attached to the right side of the limiting plate 98. The top of the limiting plate 98 is fixed to the inner side of the top of the adjusting frame 91. The inner partition 95 has an air outlet 96 inside its right wall. By adjusting the height of the lifting block 94, the flow diameter of the air outlet 96 can be changed. The inner side of the bottom of the inner partition 95 has a groove 97. The groove 97 is located directly below the lifting block 94. When the lifting block 94 falls into the groove 97, the air outlet 96 can be completely closed.

[0020] A sealing groove is opened on the outer peripheral surface of the lifting block 94, and a sealing ring 99 resistant to refrigerant corrosion is embedded inside the sealing groove. The sealing ring 99 forms a sealing fit with the inner wall of the inner partition 95 and the inner wall of the limiting plate 98. When the lifting block 94 descends into the groove 97, the sealing ring 99 forms a sealing fit with the inner wall of the groove 97, so as to prevent refrigerant from leaking at the gap, which would lead to a decrease in control accuracy or damage to system stability.

[0021] During operation, the temperature of the chamber 1 is monitored by temperature sensor 11, and the pressure of the refrigerant tank 2 inside the chamber 1 is detected by pressure sensor 21 to determine whether refrigerant needs to be added or released. When it is determined that refrigerant needs to be added, the system will close the outlet control and open the inlet control until the required amount of refrigerant for the chamber is reached, and then close the inlet control. Conversely, if refrigerant needs to be released, the system will close the inlet control and open the outlet control until the refrigerant level drops to the required level for the chamber, and then close the outlet control.

[0022] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A system based on oven refrigerant control, characterized by: The system includes a temperature chamber (1), a temperature sensor (11) is provided on the inner side wall of the temperature chamber (1), an internal refrigerant storage tank (2) is installed inside the temperature chamber (1), a pressure sensor (21) is provided inside the internal refrigerant storage tank (2), the air inlet of the internal refrigerant storage tank (2) is connected to the air outlet of the external refrigerant storage tank (5) through a first connecting pipe (3), the air outlet of the internal refrigerant storage tank (2) is connected to the air inlet of the external refrigerant storage tank (5) through a second connecting pipe (6), an air inlet control valve (4) is installed in the middle of the first connecting pipe (3), the air inlet control valve (4) is connected to the refrigerant core control system (8) through an electrical signal, an air outlet control valve (7) is installed in the middle of the second connecting pipe (6), the air outlet control valve (7) is connected to the refrigerant core control system (8) through an electrical signal, and the refrigerant core control system (8) is connected to the pressure sensor (21) and the temperature sensor (11) through a data line.

2. The system based on oven refrigerant control according to claim 1, characterized in that: An adjustment module (9) is installed at the connection between the air inlet end of the internal refrigerant storage tank (2) and the first connecting pipe (3), and at the connection between the air outlet end of the internal refrigerant storage tank (2) and the second connecting pipe (6).

3. The system based on oven refrigerant control according to claim 2, characterized in that: The adjustment module (9) consists of an adjustment frame (91), a threaded rod (92), a turntable (93), a lifting block (94), an inner partition (95), an air outlet (96), a groove (97), a limiting plate (98), and a sealing ring (99).

4. The system based on oven refrigerant control according to claim 3, characterized in that: The middle side of the threaded rod (92) is threadedly connected to the threaded hole at the top of the adjusting frame (91). The bottom of the threaded rod (92) is fixedly connected to the top of the turntable (93). The side of the turntable (93) is slidably connected to the side wall of the inner slot at the top of the lifting block (94). The right side of the lifting block (94) is fitted to the left side of the inner partition (95). The top of the inner partition (95) is fixed to the inner side of the top of the adjusting frame (91), and the bottom is fixed to the inner side of the bottom of the adjusting frame (91). The left side of the lifting block (94) is fitted to the right side of the limiting plate (98). The top of the limiting plate (98) is fixedly connected to the inner side of the top of the adjusting frame (91).

5. The system based on oven refrigerant control according to claim 4, characterized in that: The inner partition (95) has an air vent (96) inside the right wall, and a groove (97) is provided on the inner side of the bottom end of the inner partition (95), which is located directly below the lifting block (94).

6. The system based on oven refrigerant control according to claim 5, characterized in that: A sealing groove is provided on the outer peripheral surface of the lifting block (94), and a sealing ring (99) resistant to refrigerant corrosion is embedded inside the sealing groove. The sealing ring (99) forms a sealing fit with the inner wall of the inner partition (95) and the inner wall of the limiting plate (98).

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