A type of dual-temperature incubator

Abstract

This utility model relates to the field of constant temperature chamber technology and discloses a one-to-two constant temperature chamber, including an air-cooled evaporator 1 and an air-cooled evaporator 2, and further includes: a connecting pipe 1 installed at the front of the air-cooled evaporator 1 and the air-cooled evaporator 2, with a connecting pipe 2 connected to the connecting pipe 1; pressure sensors are installed on both the connecting pipe 1 and the connecting pipe 2; a compressor and a condenser are installed on the connecting pipe 2; and pipe assemblies are installed at the rear of both the air-cooled evaporator 1 and the air-cooled evaporator 2. This utility model uses one compressor to drive the two chambers, and the two air-cooled evaporators are connected to the same compressor, achieving efficient cooling, reducing equipment costs and space occupation. Pressure sensors are installed on the connecting pipe 1 and the connecting pipe 2, and the branch and main pressure sensors respectively measure the evaporation pressure of the air-cooled evaporator and the return gas pressure of the compressor, providing data support for precise system control. A one-way valve is installed on the connecting pipe 1 to effectively prevent refrigerant backflow into the air-cooled evaporator and ensure stable system operation.

Description

Technical Field

[0001] This utility model relates to the field of constant temperature chamber technology, specifically a one-to-two constant temperature chamber. Background Technology

[0002] In many scenarios requiring precise temperature control, such as cell culture and vaccine storage in the biopharmaceutical field, chip testing and storage in the electronics industry, and special food preservation in the food industry, constant temperature chambers are indispensable equipment.

[0003] Traditional temperature control chambers are typically single-chamber designs, meaning one compressor controls the temperature of one chamber. However, in practical applications, many scenarios require simultaneous temperature control of multiple different items or different batches of the same item. Using multiple single-chamber temperature control chambers would not only occupy a lot of space and increase equipment procurement costs, but also increase energy consumption and operating management costs. Utility Model Content

[0004] The purpose of this invention is to provide a dual-mode constant temperature chamber to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-mode constant temperature chamber, comprising an air-cooled evaporator 1 and an air-cooled evaporator 2, and further comprising:

[0006] A connecting pipe 1 is installed in front of air-cooled evaporator 1 and air-cooled evaporator 2. A connecting pipe 2 is connected to the connecting pipe 1. Pressure sensors are installed on both the connecting pipe 1 and the connecting pipe 2. A compressor and a condenser are installed on the connecting pipe 2.

[0007] Both air-cooled evaporator one and air-cooled evaporator two have piping assemblies installed at their rear.

[0008] Preferably, the piping assembly includes pipe one and pipe two fixedly installed at the rear of air-cooled evaporator one and air-cooled evaporator two, pipe three fixedly installed on pipe one, pipe four fixedly installed between pipe two and pipe three, pipe five fixedly installed between connecting pipe two and pipe one, and pipe six fixedly installed on pipe five.

[0009] Preferably, a pipe seven is fixedly installed between the pipe three and the connecting pipe two, and the pipe six is ​​fixedly installed on the pipe seven.

[0010] Preferably, an electronic expansion valve and a solenoid valve are fixedly installed on each of the pipes 1, 2, and 5.

[0011] Preferably, capillary tubes and solenoid valve 2 are installed on pipes 3, 4 and 6.

[0012] Preferably, a filter and a liquid storage tank are also installed on the pipeline.

[0013] Preferably, the front part of each of the connecting pipes 1, 2, 1, 2, 3, 4, 5 and 6 is a low-temperature pipe, and the rear part is a normal-temperature pipe.

[0014] Preferably, the seventh pipe is a high-temperature pipe, and a one-way valve is installed between the first air-cooled evaporator, the second air-cooled evaporator, and the pressure sensor.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention employs a single compressor to drive two chambers, with two air-cooled evaporators connected to the same compressor, achieving efficient refrigeration and reducing equipment costs and space requirements. Pressure sensors are installed on connecting pipes one and two, with branch and main pressure sensors measuring the corresponding evaporation pressure of the air-cooled evaporator and the return gas pressure of the compressor, respectively, providing data support for precise system control. A one-way valve is installed on connecting pipe one to effectively prevent refrigerant backflow into the air-cooled evaporator, ensuring stable system operation. After absorbing heat from the air-cooled evaporator, the refrigerant is compressed by the compressor, condensed and dissipated by the condenser, and excess refrigerant is stored in the liquid tank. After being filtered by the dryer filter, the refrigerant is depressurized by the electronic expansion valve and enters the air-cooled evaporator to absorb heat, forming a complete refrigeration cycle. The two chambers operate independently. By collecting parameters such as return gas pressure, evaporation pressure, and exhaust temperature, the opening of the electronic expansion valve and the opening and closing of the solenoid valve are controlled. The corresponding refrigeration circuit is activated according to the chamber's operating conditions and target temperature value. The built-in PLC program ensures that the operation of one chamber is not affected by the other chamber. Attached Figure Description

[0017] Figure 1 A schematic diagram illustrating the principle structure of the dual-temperature constant temperature chamber provided by this utility model;

[0018] Figure 2 A schematic diagram of the connection principle of the air-cooled evaporator 1 and air-cooled evaporator 2 and the pipeline provided by this utility model;

[0019] Figure 3 This is a partial schematic diagram of the pipe assembly provided by this utility model;

[0020] Figure 4 A schematic diagram of the main structure of a one-to-two constant temperature chamber provided by this utility model;

[0021] Figure 5 A schematic diagram of the left-side structure of a one-to-two constant temperature chamber provided by this utility model;

[0022] Figure 6 This is a schematic diagram of the right-side structure of a one-to-two constant temperature chamber provided by this utility model.

[0023] In the diagram: 1. Air-cooled evaporator one; 2. Air-cooled evaporator two; 3. Connecting pipe one; 4. Connecting pipe two; 5. Pressure sensor; 6. Compressor; 7. Condenser; 8. Liquid receiver; 9. Piping assembly; 91. Pipe one; 92. Pipe two; 93. Pipe three; 94. Pipe four; 95. Pipe five; 96. Pipe six; 97. Pipe seven; 10. Filter; 11. Solenoid valve one; 12. Electronic expansion valve; 13. Capillary tube; 14. Solenoid valve two. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-6 As shown, a dual-mode constant temperature chamber includes an air-cooled evaporator 1 and an air-cooled evaporator 2, and further includes: a connecting pipe 3 installed at the front of the air-cooled evaporator 1 and the air-cooled evaporator 2, a connecting pipe 4 connected to the connecting pipe 3, a pressure sensor 5 installed on both the connecting pipe 3 and the connecting pipe 4, and a compressor 6 and a condenser 7 installed on the connecting pipe 4; and a pipe assembly 9 installed at the rear of both the air-cooled evaporator 1 and the air-cooled evaporator 2.

[0026] The dual-compressor incubator uses a single compressor 6 to drive two chambers. The air-cooled evaporators 1 and 2 within the two chambers are connected to the compressor 6. After absorbing heat in the air-cooled evaporators, the refrigerant flows into the return port of the compressor 6. A one-way valve is installed on the connecting pipe 3 to prevent refrigerant backflow into the air-cooled evaporators. Pressure sensors 5 on the branch line and the main line measure the corresponding evaporation pressure of the air-cooled evaporators and the return pressure of the compressor 6, respectively. After being compressed in the compressor 6, the refrigerant enters the condenser 7 for condensation and heat dissipation. The subsequent liquid receiver 8 stores excess refrigerant. After being filtered by the dryer filter 10, the refrigerant, under the pressure reduction of the electronic expansion valve 12, enters the air-cooled evaporator to absorb heat, completing the refrigeration cycle.

[0027] Based on the above implementation scheme, the pipe assembly 9 includes pipe 1 91 and pipe 2 92 fixedly installed at the rear of air-cooled evaporator 1 and air-cooled evaporator 2. Pipe 3 93 is fixedly installed on pipe 1 91. Pipe 4 94 is fixedly installed between pipe 2 92 and pipe 3 93. Pipe 5 95 is fixedly installed between connecting pipe 2 4 and pipe 1 91. Pipe 6 96 is fixedly installed on pipe 5 95. Pipe 7 97 is fixedly installed between pipe 3 93 and connecting pipe 2 4. Pipe 6 96 is fixedly installed on pipe 7 97. Pipe 5 95 is directly connected to pipe 1 91.

[0028] Based on the above implementation scheme, an electronic expansion valve 12 and a solenoid valve 11 are fixedly installed on pipe 1 91, pipe 2 92 and pipe 5 95; a capillary tube 13 and a solenoid valve 2 14 are installed on pipe 3 93, pipe 4 94 and pipe 6 96.

[0029] Based on the above implementation plan, a filter 10 and a liquid storage tank 8 are also installed on the pipeline 91; the liquid storage tank 8 is used to store excess refrigerant.

[0030] Based on the above implementation scheme, the front of connecting pipe 1 3, connecting pipe 2 4, pipe 1 91, pipe 2 92, pipe 3 93, pipe 4 94, pipe 5 95 and pipe 6 96 are all low temperature pipes and the rear is a normal temperature pipe; pipe 7 97 is a high temperature pipe, and one-way valves are installed between air-cooled evaporator 1, air-cooled evaporator 2 and pressure sensor 5.

[0031] Working principle: The dual-compartment constant temperature chamber uses one compressor 6 to drive the operation of two chambers. The air-cooled evaporators 1 and 2 in the two chambers are connected to the same compressor 6. After absorbing heat in the air-cooled evaporators, the refrigerant flows into the return port of the compressor 6. A one-way valve is installed on the connecting pipe 3 to prevent refrigerant from flowing back into the air-cooled evaporators. The pressure sensor 5 on the branch line and the pressure sensor 5 on the main line measure the corresponding evaporation pressure of the air-cooled evaporator and the return pressure of the compressor 6, respectively. The refrigerant enters the compressor 6, is compressed, and then enters the condenser 7 for condensation and heat dissipation. The subsequent liquid receiver 8 stores excess refrigerant. After passing through the dryer filter 10, the refrigerant, under the pressure reduction of the electronic expansion valve 12, enters the air-cooled evaporator to absorb heat, completing the refrigeration cycle. The module controls the opening of the electronic expansion valve 12 by collecting the return gas pressure, the evaporation pressure of air-cooled evaporator 1 and air-cooled evaporator 2, and the exhaust temperature, thus regulating the flow rate and controlling the temperature of the target cavity. Simultaneously, it activates the corresponding refrigeration circuit based on the operating status and target temperature value of each cavity. For example, when only the air-cooled evaporator cavity is running, solenoid valve 11 is activated, and solenoid valve 214 is closed, and vice versa. The two cavities operate independently without interference. Furthermore, the built-in PLC program ensures that the operation of a single cavity is not affected by the operating status of another layer. When the cavity is kept at a constant temperature, the high-temperature, high-pressure refrigerant is depressurized and then sent to air-cooled evaporators 1 and 2 via a combination of solenoid valve 14 and capillary tube 13. This controls the temperature, suppresses temperature fluctuations, and reduces the energy consumption of the heating element. Simultaneously, to ensure the return gas pressure of compressor 6 remains at a normal level, a portion of the low-temperature refrigerant and a portion of the high-pressure refrigerant are mixed in the return gas pipe via solenoid valve 12 and capillary tube 13, stabilizing the return gas pressure within the normal operating range. The bypasses on the return gas pipes of these two compressors need to be activated whenever compressor 6 is running. The module controls the opening and closing of the solenoid valves and the opening degree of the expansion valve by collecting the return gas pressure and exhaust temperature.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A one-to-two constant temperature chamber comprising an air-cooled evaporator one (1) and an air-cooled evaporator two (2), characterized in that, Also includes: A connecting pipe 1 (3) is installed in front of the air-cooled evaporator 1 (1) and the air-cooled evaporator 2 (2). A connecting pipe 2 (4) is connected to the connecting pipe 1 (3). A pressure sensor (5) is installed on both the connecting pipe 1 (3) and the connecting pipe 2 (4). A compressor (6) and a condenser (7) are installed on the connecting pipe 2 (4). Both the air-cooled evaporator 1 (1) and the air-cooled evaporator 2 (2) have a pipe assembly (9) installed at the rear.

2. The one-dedicated two constant temperature incubator according to claim 1, characterized in that: The pipe assembly (9) includes pipe 1 (91) and pipe 2 (92) fixedly installed at the rear of air-cooled evaporator 1 (1) and air-cooled evaporator 2 (2), pipe 3 (93) fixedly installed on pipe 1 (91), pipe 4 (94) fixedly installed between pipe 2 (92) and pipe 3 (93), pipe 5 (95) fixedly installed between connecting pipe 2 (4) and pipe 1 (91), and pipe 6 (96) fixedly installed on pipe 5 (95).

3. The one-dedicated two constant temperature incubator according to claim 2, characterized in that: Pipeline 7 (97) is fixedly installed between pipe 3 (93) and connecting pipe 2 (4), and pipe 6 (96) is fixedly installed on pipe 7 (97).

4. The one-dedicated two constant temperature incubator according to claim 2, characterized in that: An electronic expansion valve (12) and a solenoid valve (11) are fixedly installed on each of the pipes 1 (91), 2 (92) and 5 (95).

5. The one-dedicated two constant temperature incubator according to claim 2, characterized in that: Capillary tubes (13) and solenoid valves (14) are installed on pipes three (93), four (94) and six (96).

6. The one-dedicated two constant temperature incubator according to claim 2, characterized in that: A filter (10) and a storage tank (8) are also installed on the first (91) pipe.

7. A dual-mode constant temperature chamber according to claim 2, characterized in that: The front of each of the connecting pipe 1 (3), connecting pipe 2 (4), pipe 1 (91), pipe 2 (92), pipe 3 (93), pipe 4 (94), pipe 5 (95) and pipe 6 (96) is a low-temperature pipe, and the rear is a normal-temperature pipe.

8. A dual-mode constant temperature chamber according to claim 3, characterized in that: Pipeline 7 (97) is a high-temperature pipe, and one-way valves are installed between air-cooled evaporator 1 (1), air-cooled evaporator 2 (2) and pressure sensor (5).

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