High and low temperature test box temperature control system controlled by one-driving-four temperature boxes

Abstract

The utility model discloses a high and low temperature test box temperature control system controlled by one-driving-four temperature boxes, which comprises a temperature control assembly and four groups of expansion assemblies, the temperature control assembly comprises a refrigeration module and a heating module, and each expansion module comprises an expansion output module, a servo driving module, a refrigeration system monitoring module and a sensor input module. The expansion output module comprises an operation assembly, a fault monitoring assembly, a lighting assembly and a defrosting assembly, the servo driving module comprises an electronic expansion valve unit, and the refrigerating system monitoring module comprises a plurality of signal input assemblies. Meanwhile, refrigeration of four different temperature areas can be achieved, the space utilization rate is increased, and the overall energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the field of high and low temperature test chambers, in particular to a high and low temperature test chamber temperature control system controlled by one-to-four temperature chambers. Background Art

[0002] High and low temperature test is the abbreviation of high temperature test and low temperature test. The purpose of the test is to evaluate the impact of high and low temperature conditions on the performance of equipment during storage and operation. Although the starting temperature of the hot and cold shock test is not mentioned or rigidly stipulated in the general hot and cold shock test standards, it is an issue that must be considered when conducting the test, because it involves whether the test ends at a low temperature or a high temperature state, which determines whether the product needs to be dried, resulting in an extension of the test time.

[0003] The working principle of the high and low temperature test chamber mainly involves the heating system, refrigeration system, temperature control system and circulating air system. The following is a detailed introduction to the working principle of the test chamber:

[0004] Heating system: The high and low temperature test chamber is equipped with a heating system, including electric heating tubes, heating furnaces, etc. By controlling the operation of the heating system, the temperature inside the test chamber can be gradually increased to reach the required high temperature conditions;

[0005] Refrigeration system: The high and low temperature test chamber is also equipped with a refrigeration system, including a compressor, a condenser, an evaporator, etc. By controlling the operation of the refrigeration system, the temperature inside the test chamber can be gradually reduced to achieve the required low temperature conditions;

[0006] Temperature control system: The high and low temperature test chamber is also equipped with a temperature control system, including a temperature sensor, a temperature controller, etc., which controls the operation of the heating and cooling systems by measuring the temperature inside the test chamber and comparing it with the set temperature value, so that the temperature inside the test chamber is kept within the set range;

[0007] Circulating air system: The high and low temperature test chamber is also equipped with a circulating air system, including fans, air ducts, etc. Through the circulating air system, the temperature inside the test chamber can be evenly distributed, ensuring the accuracy and reliability of the test results.

[0008] Traditional high and low temperature test chambers can only realize one set of heating and cooling systems corresponding to one test chamber environment, and cannot realize one-to-many test chambers. The main technical difficulty lies in the difficulty in realizing the synchronization of different test temperatures of multiple test chambers by the cooling system. Summary of the invention

[0009] Purpose of the invention: The purpose of the utility model is to provide a high and low temperature test chamber temperature control system with one-to-four temperature chambers to address the deficiencies in the prior art.

[0010] Technical solution: The utility model describes a high and low temperature test chamber temperature control system controlled by one-to-four temperature chambers, comprising a temperature control component and four groups of extension components, wherein the temperature control component comprises a refrigeration module and a heating module, the extension module comprises an extension output module, a servo drive module, a refrigeration system monitoring module and a sensor input module, the extension output module comprises an operation component, a fault monitoring component, a lighting component and a defrost component, the servo drive module comprises an electronic expansion valve unit, and the refrigeration system monitoring module comprises a number of signal input components.

[0011] Preferably, the signal input component includes an intake temperature signal input component, an exhaust temperature signal input component, a compressor temperature signal input component, an intake pressure signal input component and an exhaust pressure signal input component.

[0012] Preferably, the electronic expansion valve unit comprises an electronic expansion valve and an electronic expansion valve fast plug-in unit, and the electronic expansion valve is connected to the extension module via the electronic expansion valve fast plug-in unit.

[0013] Preferably, the sensor input module includes a dry-bulb PT100 temperature sensor.

[0014] Preferably, the refrigeration module comprises an evaporator assembly, a compressor assembly and a condenser assembly.

[0015] Preferably, the invention further comprises a box body, wherein two test layers with the same upper and lower structures are integrated in the box body, and two test chambers are arranged side by side in each test layer.

[0016] Preferably, the temperature control component is installed in the box, and the extension components are arranged in a one-to-one correspondence with the test chamber.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the technical solution is a new type of refrigeration method, which adopts a refrigeration unit as a refrigeration module to realize refrigeration of four different temperature zones, reduces energy consumption and improves storage efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the general assembly structure of the high and low temperature test chamber temperature control system of the utility model with one-to-four temperature chambers;

[0019] Figure 2 This is a schematic diagram of the circuit structure of the extended output module in the high and low temperature test chamber temperature control system of the utility model with one-to-four temperature chambers;

[0020] Figure 3 It is a circuit structure diagram of a servo drive module and a refrigeration system monitoring module in the temperature control system of a high and low temperature test chamber controlled by one-to-four temperature chambers of the utility model;

[0021] Figure 4 This is a schematic diagram of the circuit structure of the sensor input module in the temperature control system of the high and low temperature test chamber controlled by one-to-four temperature chambers of the utility model. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0026] A temperature control system for a high and low temperature test chamber controlled by one to four temperature chambers, comprising a temperature control component and four groups of expansion components, the temperature control component comprising a refrigeration module and a heating module, the expansion module comprising an expansion output module, a servo drive module, a refrigeration system monitoring module and a sensor input module, the expansion output module comprising an operation component, a fault monitoring component, a lighting component and a defrost component, the servo drive module comprising an electronic expansion valve unit, and the refrigeration system monitoring module comprising a plurality of signal input components.

[0027] Preferably, the signal input component includes an intake temperature signal input component, an exhaust temperature signal input component, a compressor temperature signal input component, an intake pressure signal input component and an exhaust pressure signal input component.

[0028] In specific implementation, the electronic expansion valve unit includes an electronic expansion valve and an electronic expansion valve quick plug-in. The electronic expansion valve is connected to the expansion module through the electronic expansion valve quick plug-in. The sensor input module includes a dry-bulb PT100 temperature sensor. The refrigeration module includes an evaporator assembly, a compressor assembly and a condenser assembly. In addition, the overall device also includes a box body, which integrates two test layers with consistent upper and lower structures. Two test chambers are arranged in parallel in each test layer. The temperature control assembly is installed in the box body, and the expansion assembly corresponds to the test chamber setting one by one.

[0029] One-to-four temperature chamber is a new type of temperature chamber refrigeration method. Compared with traditional temperature chambers, it has the following characteristics and advantages:

[0030] (1) Using one refrigeration unit as the refrigeration module can realize refrigeration of four different temperature zones at the same time, thus improving the utilization rate of space;

[0031] (2) Reduced energy consumption and saved energy;

[0032] (3) The control system is flexible and the temperature can be adjusted at any time according to needs;

[0033] (4) Simple operation and easy maintenance;

[0034] (5) Improved storage efficiency and ensured storage quality.

[0035] The refrigeration principle of the one-to-four temperature box is similar to that of the traditional temperature box, which realizes refrigeration through the cycle of compression-condensation-expansion-evaporation.

[0036] Evaporator: The evaporator is one of the key components of the refrigeration cycle. Its function is to evaporate the low-temperature refrigerant in exchange for heat to lower the indoor temperature. In the one-machine four-temperature high and low temperature test chamber, the evaporator is divided into two parts, one for the low-temperature area and the other for the high-temperature area;

[0037] Compressor: The variable frequency compressor is the main driving force in the refrigeration cycle. Its function is to suck in low-temperature and low-pressure refrigerant gas, increase its temperature and pressure through compression, and become high-temperature and high-pressure gas, which is supplied to the condenser. In the one-to-four temperature box, a variable frequency compressor is used to drive the low-temperature and high-temperature areas respectively through multi-channel shunt supply;

[0038] Condenser: The condenser is another key component in the refrigeration cycle. Its function is to convert high-temperature and high-pressure refrigerant gas into high-pressure liquid through heat dissipation and condensation, and release a large amount of heat. In the one-machine four-temperature high and low temperature test chamber, the condenser is also divided into two parts, one for the low temperature area and the other for the high temperature area;

[0039] Servo expansion valve: The expansion valve is the fourth key component in the refrigeration cycle. Its function is to throttle the high-pressure liquid refrigerant through the valve, reduce its pressure and temperature, and turn it into a low-temperature and low-pressure refrigerant for use in the evaporator.

[0040] Compared with traditional equipment, it adopts the static balance technology principle of "no heating during cooling" and "no cooling during heating". It is different from the traditional technology of "cold and hot antagonistic dynamic balance" of high-power cooling against high-power heating. When the test room needs low temperature or constant temperature (that is, the target temperature is lower than R.T+15°C), the central controller adjusts the refrigerant flow through the servo valve to control the cooling capacity when the refrigeration compressor is continuously turned on. Only a small amount of cooling capacity is needed to maintain the balance between cooling and cold loss of the test chamber. No heating is required to maintain good temperature stability, so that the equipment is always in a relatively low power consumption state; the constant temperature and humidity test chamber adopts a new refrigeration energy regulation technology. During the low-temperature constant test, no heating is required to balance the temperature (cold and hot), which reduces the thermal effect of the compressor and the condenser; when doing constant temperature tests under low temperature conditions, the new refrigeration energy regulation technology is to adjust the cooling capacity, which greatly saves energy consumption and reduces the test cost.

[0041] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0042] Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples without contradicting each other.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high and low temperature test chamber temperature control system with one-to-four temperature chambers, comprising a temperature control component and four groups of expansion components, wherein the temperature control component comprises a refrigeration module and a heating module, and is characterized in that: The expansion component includes an expansion output module, a servo drive module, a refrigeration system monitoring module and a sensor input module. The expansion output module includes an operation component, a fault monitoring component, a lighting component and a defrost component. The servo drive module includes an electronic expansion valve unit. The refrigeration system monitoring module includes several signal input components.

2. According to claim 1, a high and low temperature test chamber temperature control system with one-to-four temperature chambers is characterized in that: The signal input component includes an intake temperature signal input component, an exhaust temperature signal input component, a compressor temperature signal input component, an intake pressure signal input component and an exhaust pressure signal input component.

3. The high and low temperature test chamber temperature control system of one-to-four temperature chambers according to claim 1 is characterized in that: The electronic expansion valve unit comprises an electronic expansion valve and an electronic expansion valve quick plug-in unit, and the electronic expansion valve is connected to the expansion module via the electronic expansion valve quick plug-in unit.

4. The high and low temperature test chamber temperature control system of one-to-four temperature chambers according to claim 1 is characterized in that: The sensor input module includes a dry bulb PT100 temperature sensor.

5. The high and low temperature test chamber temperature control system of one-to-four temperature chambers according to claim 1 is characterized in that: The refrigeration module includes an evaporator assembly, a compressor assembly and a condenser assembly.

6. The high and low temperature test chamber temperature control system of one-to-four temperature chambers according to claim 1 is characterized in that: The invention also comprises a box body, in which two test layers with the same upper and lower structures are integrated, and two test chambers are arranged in parallel in each test layer.

7. The high and low temperature test chamber temperature control system of one-to-four temperature chambers according to claim 6 is characterized in that: The temperature control component is installed in the box, and the expansion components are arranged in a one-to-one correspondence with the test chamber.

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