CN115981389B - Control method and device of temperature regulating system and environment test box - Google Patents
Control method and device of temperature regulating system and environment test box Download PDFInfo
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- CN115981389B CN115981389B CN202211585077.0A CN202211585077A CN115981389B CN 115981389 B CN115981389 B CN 115981389B CN 202211585077 A CN202211585077 A CN 202211585077A CN 115981389 B CN115981389 B CN 115981389B
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- 238000005496 tempering Methods 0.000 claims 2
- 238000005057 refrigeration Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The embodiment of the invention discloses a control method and device of a temperature regulating system and an environment test box. The temperature regulating system comprises a constant temperature subsystem and a cooling subsystem, and the constant temperature subsystem and the cooling subsystem are used for regulating the temperature of the environmental test chamber; the control method of the temperature regulating system comprises the following steps: acquiring the ambient temperature and the temperature regulation requirement of an environmental test box; if the temperature regulation requirement is a temperature reduction requirement, controlling at least one of the constant temperature subsystem and the temperature reduction subsystem to work according to the ambient temperature and the preset target temperature; if the temperature regulation requirement is a constant temperature requirement, the constant temperature subsystem or the cooling subsystem is controlled to work according to the ambient temperature and the preset target temperature. The control method and the control device for the temperature regulating system and the environment test box provided by the embodiment of the invention can realize energy-saving operation of the temperature regulating system and reduce the use cost of a user.
Description
Technical Field
The embodiment of the invention relates to a temperature control technology, in particular to a control method and device of a temperature regulating system and an environment test box.
Background
For an environmental test box such as a water-cooled high-low temperature environmental test box, the temperature and humidity environmental test and the high-low temperature cycle test can be performed, so that the temperature of the environmental test box needs to be adjusted. The temperature regulation system of the environmental test chamber can control the temperature of the environmental test chamber so as to meet the actual temperature requirement.
At present, when the temperature regulating system regulates the temperature of the environmental test box, the temperature regulating system usually regulates the temperature according to the maximum load of the environmental test box, and the load of the environmental test box in most of the time is far less than the maximum load, so that the energy consumption of the temperature regulating system is larger, and the energy saving is not facilitated.
Disclosure of Invention
The embodiment of the invention provides a control method and device of a temperature regulating system and an environment test box, so as to realize energy-saving operation of the temperature regulating system and reduce the use cost of a user.
In a first aspect, an embodiment of the present invention provides a control method of a temperature adjustment system, where the temperature adjustment system includes a constant temperature subsystem and a cooling subsystem, the constant temperature subsystem and the cooling subsystem are both used for adjusting a temperature of an environmental test chamber, and the control method includes:
acquiring the ambient temperature and the temperature regulation requirement of an environmental test box;
if the temperature regulation requirement is a temperature reduction requirement, controlling at least one of the constant temperature subsystem and the temperature reduction subsystem to work according to the ambient temperature and the preset target temperature;
if the temperature regulation requirement is a constant temperature requirement, the constant temperature subsystem or the cooling subsystem is controlled to work according to the ambient temperature and the preset target temperature.
Optionally, controlling at least one of the constant temperature subsystem and the cooling subsystem to operate according to the ambient temperature and the preset target temperature includes:
when the preset target temperature is greater than the ambient temperature and the difference between the preset target temperature and the ambient temperature is greater than a preset first threshold value, controlling the constant temperature subsystem to work and controlling the cooling subsystem to stop working;
when the preset target temperature is greater than the ambient temperature, the difference between the preset target temperature and the ambient temperature is less than or equal to a preset first threshold value, and the preset target temperature is greater than a preset second threshold value, the constant temperature subsystem and the cooling subsystem are controlled to work.
Optionally, the method further comprises:
when the preset target temperature is smaller than a preset second threshold value, the constant temperature subsystem and the cooling subsystem are controlled to work.
Optionally, the controlling the constant temperature subsystem and the cooling subsystem both work, including:
the opening of the electronic expansion valve at the inlet of the evaporator in the constant temperature subsystem is controlled to be larger than zero, and the opening of the electronic expansion valve at the inlet of the evaporator in the cooling subsystem is controlled to be larger than zero.
Optionally, controlling the constant temperature subsystem to work and controlling the cooling subsystem to stop working includes:
and controlling the opening of the electronic expansion valve at the inlet of the evaporator in the constant temperature subsystem to be increased and then reduced, and controlling the opening of the electronic expansion valve at the inlet of the evaporator in the cooling subsystem to be zero.
Optionally, controlling the constant temperature subsystem or the cooling subsystem to work according to the ambient temperature and the preset target temperature includes:
when the preset target temperature is greater than the ambient temperature, the difference between the preset target temperature and the ambient temperature is less than or equal to a preset first threshold value, and the preset target temperature is greater than a preset second threshold value, the constant temperature subsystem is controlled to work, and the cooling subsystem is controlled to stop working;
when the preset target temperature is smaller than a preset second threshold value, the constant temperature subsystem is controlled to stop working, and the cooling subsystem is controlled to work.
In a second aspect, an embodiment of the present invention provides a control device of a temperature adjustment system, where the temperature adjustment system includes a constant temperature subsystem and a cooling subsystem, and the temperature adjustment system is used for adjusting a temperature of an environmental test chamber;
the control device comprises:
the information acquisition module is used for acquiring the ambient temperature and the temperature regulation requirement of the environmental test box;
the first control module is used for controlling at least one of the constant temperature subsystem and the cooling subsystem to work according to the ambient temperature and the preset target temperature if the temperature regulation requirement is a cooling requirement;
and the second control module is used for controlling the constant temperature subsystem or the cooling subsystem to work according to the ambient temperature and the preset target temperature if the temperature regulation requirement is a constant temperature requirement.
Optionally, the first control module includes:
the first control unit is used for controlling the constant temperature subsystem to work and controlling the cooling subsystem to stop working when the preset target temperature is larger than the ambient temperature and the difference value between the preset target temperature and the ambient temperature is larger than a preset first threshold value;
the second control unit is used for controlling the constant temperature subsystem and the cooling subsystem to work when the preset target temperature is larger than the ambient temperature and the difference value between the preset target temperature and the ambient temperature is smaller than or equal to a preset first threshold value and the preset target temperature is larger than a preset second threshold value.
In a third aspect, an embodiment of the present invention provides an environmental test chamber, including a control system and a temperature regulating system according to the first and second aspects, the control system being electrically connected to the temperature regulating system, the control system including a control device according to the second aspect.
Optionally, the control system comprises a controller and a touch screen, the controller is electrically connected to the touch screen, and the control device according to the second aspect is integrated in the controller.
The temperature control system comprises a constant temperature subsystem and a cooling subsystem, wherein the constant temperature subsystem and the cooling subsystem are used for adjusting the temperature of the environmental test box, and the ambient temperature and the temperature control requirement of the environmental test box are obtained; if the temperature regulation requirement is a temperature reduction requirement, controlling at least one of the constant temperature subsystem and the temperature reduction subsystem to work according to the ambient temperature and the preset target temperature; if the temperature regulation requirement is a constant temperature requirement, the constant temperature subsystem or the cooling subsystem is controlled to work according to the ambient temperature and the preset target temperature. According to the control method, the control device and the environment test box of the temperature regulating system, the constant temperature subsystem and/or the cooling subsystem are controlled to work according to the ambient temperature and the temperature regulating requirement, when the temperature regulating requirement is the constant temperature requirement, the constant temperature subsystem or the cooling subsystem is controlled to work, the problem of high energy consumption caused by the fact that the constant temperature subsystem and the cooling subsystem work can be avoided, energy-saving operation of the temperature regulating system is achieved, and the use cost of a user is reduced.
Drawings
Fig. 1 is a flowchart of a control method of a temperature adjustment system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a temperature regulating system according to a first embodiment of the present invention;
fig. 3 is a flowchart of a control method of a temperature adjustment system according to a second embodiment of the present invention;
fig. 4 is a schematic diagram of a refrigeration mode according to a second embodiment of the present invention;
FIG. 5 is a schematic diagram of another refrigeration mode according to a second embodiment of the present invention;
FIG. 6 is a schematic diagram of a second embodiment of the present invention in a cooling mode;
fig. 7 is a flowchart of a control device of a temperature adjustment system according to a third embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Example 1
Fig. 1 is a flowchart of a control method of a temperature adjustment system according to an embodiment of the present invention. The embodiment is applicable to the aspects of temperature regulating system control and the like, the method can be executed by a control device of the temperature regulating system, the device can be realized in the form of software and/or hardware, the device can be integrated in a controller of a control system of an environment test box, the temperature regulating system comprises a constant temperature subsystem and a cooling subsystem, and the constant temperature subsystem and the cooling subsystem are used for regulating the temperature of the environment test box; the method specifically comprises the following steps:
step 110, obtaining the ambient temperature and temperature regulation requirements of the environmental test chamber.
The temperature sensor can be arranged around the environmental test chamber, the control device of the temperature regulating system can be electrically connected with the temperature sensor so as to acquire the ambient temperature of the environmental test chamber, and the temperature regulating requirement can be externally input to the control device.
And step 120, if the temperature regulation requirement is a temperature reduction requirement, controlling at least one of the constant temperature subsystem and the temperature reduction subsystem to work according to the ambient temperature and the preset target temperature.
Specifically, if the temperature difference between the preset target temperature and the ambient temperature is greater than a preset value, such as 60 degrees, the constant temperature subsystem is controlled to work, the cooling subsystem is stopped, and if the preset target temperature is less than another preset value, such as-25 degrees, the constant temperature subsystem and the cooling subsystem are controlled to work.
Fig. 2 is a schematic structural diagram of a temperature control system according to a first embodiment of the present invention. Referring to fig. 2, taking a cooling system as an example, the cooling system includes a compressor, a condenser, an evaporator, an electronic expansion valve, a heater, a circulating fan, a cooling water circulating pump, a solenoid valve, a capillary tube, and the like. The working principle of the refrigerating system is as follows: the high-temperature high-pressure gaseous refrigerant at the outlet of the compressor CM enters the condenser COND to be condensed and then becomes liquid refrigerant, the liquid refrigerant is throttled and reduced to the inlet of the evaporator EVAP by the electronic expansion valve KV, and the liquid refrigerant is gasified and absorbs heat and refrigerates in the evaporator EVAP. The system is provided with a heater, and when the temperature of the compartment is close to the target temperature, PID control of the heater is started to perform thermal load hedging adjustment so as to realize accurate temperature control in the compartment. In the refrigeration state, the electronic expansion valve KV can dynamically adjust the opening according to the degree of superheat of the outlet of the evaporator. When the external load is small, the superheat degree of the outlet of the evaporator is reduced, and the operation condition of low refrigeration output and even zero refrigeration output of the refrigeration system can possibly occur, so that the hot gas bypass electromagnetic valves SV1 and SV2 and the hot gas bypass capillaries CAP1 and CAP2 are combined into a hot gas bypass loop to carry out energy unloading of the refrigeration system and maintain the minimum suction pressure of the system. The cold air bypass solenoid valve SV3 and the cold air bypass capillary tube CAP3 are combined into a cold air bypass loop, so that the reasonable air suction temperature of the compressor can be maintained, and the air suction overheat of the compressor is avoided. In addition, the working principle of the constant temperature system is basically the same as that of the cooling system, and reference may be made to the working principle of the cooling system, which is not described herein.
And 130, if the temperature regulation requirement is a constant temperature requirement, controlling the constant temperature subsystem or the cooling subsystem to work according to the ambient temperature and the preset target temperature.
Specifically, if the temperature difference between the preset target temperature and the ambient temperature is greater than a preset value, such as 60 degrees, the constant temperature subsystem is controlled to work, the cooling subsystem is stopped, and if the preset target temperature is less than another preset value, such as-25 degrees, the constant temperature subsystem is controlled to stop working, and the cooling subsystem is controlled to work.
According to the control method of the temperature regulating system, the temperature regulating system comprises a constant temperature subsystem and a cooling subsystem, the constant temperature subsystem and the cooling subsystem are used for regulating the temperature of the environmental test box, and the ambient temperature and the temperature regulating requirement of the environmental test box are obtained; if the temperature regulation requirement is a temperature reduction requirement, controlling at least one of the constant temperature subsystem and the temperature reduction subsystem to work according to the ambient temperature and the preset target temperature; if the temperature regulation requirement is a constant temperature requirement, the constant temperature subsystem or the cooling subsystem is controlled to work according to the ambient temperature and the preset target temperature. According to the control method of the temperature regulating system, the constant temperature subsystem and/or the cooling subsystem are controlled to work according to the ambient temperature and the temperature regulating requirement, when the temperature regulating requirement is the constant temperature requirement, the constant temperature subsystem or the cooling subsystem is controlled to work, the problem of high energy consumption caused by the fact that the constant temperature subsystem and the cooling subsystem work can be avoided, energy-saving operation is achieved, and the use cost of a user is reduced.
Example two
Fig. 3 is a flowchart of a control method of a temperature adjustment system according to a second embodiment of the present invention. The embodiment is applicable to the aspects of temperature regulating system control and the like, the method can be executed by a control device of the temperature regulating system, the device can be realized in the form of software and/or hardware, the device can be integrated in a controller of a control system of an environment test box, the temperature regulating system comprises a constant temperature subsystem and a cooling subsystem, and the constant temperature subsystem and the cooling subsystem are used for regulating the temperature of the environment test box; the method specifically comprises the following steps:
step 210, obtaining the ambient temperature and temperature regulation requirements of the environmental test chamber.
Step 220, if the temperature adjustment requirement is a temperature reduction requirement, when the preset target temperature is greater than the ambient temperature and the difference between the preset target temperature and the ambient temperature is greater than the preset first threshold, controlling the constant temperature subsystem to operate and controlling the temperature reduction subsystem to stop operating.
For example, if the preset first threshold is 60, the preset target temperature TS is greater than the ambient temperature TA, and TS > ta+60, the constant temperature subsystem is controlled to operate, and the cooling subsystem is controlled to stop operating. Specifically, the opening of the electronic expansion valve at the inlet of the evaporator in the constant temperature subsystem can be controlled to be increased and then reduced, and the opening of the electronic expansion valve at the inlet of the evaporator in the cooling subsystem is controlled to be zero. Fig. 4 is a schematic diagram of a refrigeration mode according to a second embodiment of the present invention. Referring to fig. 4, the opening of the electronic expansion valve at the evaporator inlet in the cooling subsystem is zero, the opening of the electronic expansion valve at the evaporator inlet in the constant temperature subsystem is increased and then decreased, and finally, the electronic expansion valve is stabilized at a value larger than zero.
Step 230, if the temperature adjustment requirement is a temperature reduction requirement, when the preset target temperature is greater than the ambient temperature, the difference between the preset target temperature and the ambient temperature is less than or equal to the preset first threshold, and the preset target temperature is greater than the preset second threshold, controlling the constant temperature subsystem and the temperature reduction subsystem to operate.
For example, if the preset first threshold is 60, the preset second threshold is-25, the preset target temperature TS is greater than the ambient temperature TA, and-25 < TS < ta+60, then the constant temperature subsystem and the cooling subsystem are controlled to operate. Specifically, the opening of the electronic expansion valve at the inlet of the evaporator in the constant temperature subsystem can be controlled to be larger than zero, and the opening of the electronic expansion valve at the inlet of the evaporator in the cooling subsystem is controlled to be larger than zero.
And 240, if the temperature regulation requirement is a cooling requirement, controlling the constant temperature subsystem and the cooling subsystem to work when the preset target temperature is smaller than a preset second threshold value.
And if the temperature regulation requirement is a cooling requirement, when the preset target temperature TS < -25, controlling the constant temperature subsystem and the cooling subsystem to work. Fig. 5 is a schematic diagram of another refrigeration mode according to the second embodiment of the present invention. Referring to fig. 5, the opening of the electronic expansion valve at the evaporator inlet in the cooling subsystem is increased and then reduced to zero, and the opening of the electronic expansion valve at the evaporator inlet in the constant temperature subsystem is increased and then reduced, and finally is stabilized at a value greater than zero.
Step 250, if the temperature adjustment requirement is a constant temperature requirement, when the preset target temperature is greater than the ambient temperature, the difference between the preset target temperature and the ambient temperature is less than or equal to the preset first threshold, and the preset target temperature is greater than the preset second threshold, controlling the constant temperature subsystem to operate, and controlling the cooling subsystem to stop operating.
For example, the first threshold is preset to be 60, the second threshold is preset to be-25, the preset target temperature TS is greater than the ambient temperature TA, and-25 < TS < TA+60, the constant temperature subsystem is controlled to work, and the cooling subsystem is controlled to stop working. In addition, when TS > TA+60, the constant temperature subsystem is controlled to work, and the cooling subsystem is controlled to stop working.
And 260, if the temperature regulation requirement is a constant temperature requirement, when the preset target temperature is smaller than a preset second threshold value, controlling the constant temperature subsystem to stop working, and controlling the cooling subsystem to work.
For example, if the temperature regulation requirement is a constant temperature requirement, when the preset target temperature TS < -25 >, the constant temperature subsystem and the cooling subsystem are controlled to work. In this embodiment, the unit of temperature is degrees celsius.
Fig. 6 is a schematic diagram of another refrigeration mode according to the second embodiment of the present invention. Referring to fig. 6, the opening of the electronic expansion valve at the evaporator inlet in the constant temperature subsystem is increased and then reduced to zero, and the opening of the electronic expansion valve at the evaporator inlet in the temperature reducing subsystem is increased and then reduced and finally stabilized at a value greater than zero.
Illustratively, the starting opening degree of the electronic expansion valve may be as shown in table 1:
table 1 initial opening degree of electronic expansion valve
| TA/TPE | TPE<-25 | -25≤TPE≤-3 | TPE>-3 |
| TA>30 | 240 | 240 | 240 |
| 20≤TA≤30 | 240 | 240 | 240 |
| TA<20 | 240 | 240 | 240 |
Deevcabi_refj_k_pulldown is the opening during the cool down, and the rule is as follows:
in the above description, deevcabi_refj_k_pid_min is the minimum opening limit value of the PID control section set during the cooling period of the electronic expansion valve deevcabi_refj_k; the DEEVcabi_refj_k_pid_max is the maximum opening limit value of the PID section set during the cooling period of the electronic expansion valve DEEVcabi_refj_k; tpv _cabi_err_initial is the initial temperature deviation of the temperature control chamber cabi; tpv _cabi_err (k) is the temperature deviation of the temperature control chamber cabi at the kth sampling time; tpv _cabi_err_reevcabi_refj_k_turn is the temperature deviation of the temperature control chamber cabi at the moment when the temperature is shifted from the cool down period to the pre-equilibrium period (or from the pre-equilibrium period to the cool down period).
Deevcabi_refj_k_decay is the pre-equilibrium period opening, and the rule is as follows:
in the above expression, the electronic expansion valve opening degree is set at the constant temperature state in deevcabi_refj_k_con_tem. Illustratively, the definition of DEEVcabi_refj_k_ons_tem is shown in Table 2.
Table 2 DEEVcabi_refj_k_con_temp defines an example
According to the control method of the temperature regulating system, the constant temperature subsystem and/or the cooling subsystem are controlled to work according to the ambient temperature and the temperature regulating requirement, when the temperature regulating requirement is the constant temperature requirement, the constant temperature subsystem or the cooling subsystem is controlled to work, the problem of high energy consumption caused by the fact that the constant temperature subsystem and the cooling subsystem work can be avoided, energy-saving operation is achieved, and the use cost of a user is reduced.
Example III
Fig. 7 is a block diagram of a control device of a temperature control system according to a third embodiment of the present invention. The temperature regulating system comprises a constant temperature subsystem and a cooling subsystem and is used for regulating the temperature of the environmental test chamber; the control device of the temperature system comprises: an information acquisition module 310, a first control module 320, and a second control module 330; the information acquisition module 310 is used for acquiring the ambient temperature and the temperature regulation requirement of the environmental test chamber; the first control module 320 is configured to control at least one of the constant temperature subsystem and the cooling subsystem to operate according to the ambient temperature and the preset target temperature if the temperature adjustment requirement is a cooling requirement; the second control module 330 is configured to control the constant temperature subsystem or the cooling subsystem to operate according to the ambient temperature and the preset target temperature if the temperature adjustment requirement is a constant temperature requirement.
Optionally, the first control module 320 includes: a first control unit and a second control unit; the first control unit is used for controlling the constant temperature subsystem to work and controlling the cooling subsystem to stop working when the preset target temperature is larger than the ambient temperature and the difference value between the preset target temperature and the ambient temperature is larger than a preset first threshold value; the second control unit is used for controlling the constant temperature subsystem and the cooling subsystem to work when the preset target temperature is larger than the ambient temperature and the difference value between the preset target temperature and the ambient temperature is smaller than or equal to a preset first threshold value and the preset target temperature is larger than a preset second threshold value.
Preferably, the second control unit is further configured to control the constant temperature subsystem and the cooling subsystem to work when the preset target temperature is less than a preset second threshold value.
Preferably, the second control unit is specifically configured to control the opening of the electronic expansion valve at the inlet of the evaporator in the constant temperature subsystem to be greater than zero, and the opening of the electronic expansion valve at the inlet of the evaporator in the cooling subsystem to be greater than zero.
Preferably, the first control unit is specifically configured to control the opening of the electronic expansion valve at the inlet of the evaporator in the constant temperature subsystem to increase and then decrease, and control the opening of the electronic expansion valve at the inlet of the evaporator in the cooling subsystem to be zero.
Optionally, the second control module 330 includes: a third control unit and a fourth control unit; the third control unit is used for controlling the constant temperature subsystem to work and controlling the cooling subsystem to stop working when the preset target temperature is larger than the ambient temperature and the difference value between the preset target temperature and the ambient temperature is smaller than or equal to a preset first threshold value and the preset target temperature is larger than a preset second threshold value; and the fourth control unit is used for controlling the constant temperature subsystem to stop working and controlling the cooling subsystem to work when the preset target temperature is smaller than a preset second threshold value.
The embodiment of the invention provides an environment test box, which comprises a control system and a temperature regulating system according to any embodiment of the invention, wherein the control system is electrically connected with the temperature regulating system, and the control system comprises a control device according to any embodiment of the invention. The controller can control the working state of the temperature regulating system to regulate the temperature of the environmental test chamber.
Optionally, the control system includes a controller and a touch screen, where the controller is electrically connected to the touch screen, and the control device according to any embodiment of the present invention is integrated in the controller. Specifically, the controller may transmit the received information, such as temperature information, to the touch screen, and the touch screen may receive an externally input control signal and transmit the control signal to the controller, and the controller may control the temperature adjustment system according to the control signal.
The control device and the environmental test chamber of the temperature control system provided by the embodiment belong to the same inventive concept as the control method of the temperature control system provided by any embodiment of the present invention, and have corresponding beneficial effects, and technical details not elaborated in the embodiment are detailed in the control method of the temperature control system provided by any embodiment of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (7)
1. A control method of a temperature regulating system, wherein the temperature regulating system comprises a constant temperature subsystem and a cooling subsystem, the constant temperature subsystem and the cooling subsystem are both used for regulating the temperature of an environmental test chamber, the control method comprises:
acquiring the ambient temperature and the temperature regulation requirement of the environmental test chamber;
if the temperature regulation requirement is a cooling requirement, controlling at least one of the constant temperature subsystem and the cooling subsystem to work according to the ambient temperature and a preset target temperature;
if the temperature regulation requirement is a constant temperature requirement, controlling the constant temperature subsystem or the cooling subsystem to work according to the ambient temperature and a preset target temperature;
when the temperature regulation requirement is a temperature reduction requirement, the controlling the at least one of the constant temperature subsystem and the temperature reduction subsystem to operate according to the ambient temperature and the preset target temperature includes:
when the preset target temperature is greater than the ambient temperature and the difference between the preset target temperature and the ambient temperature is greater than a preset first threshold, controlling the constant temperature subsystem to work and controlling the cooling subsystem to stop working;
when the preset target temperature is greater than the ambient temperature, the difference value between the preset target temperature and the ambient temperature is smaller than or equal to a preset first threshold value, and the preset target temperature is greater than a preset second threshold value, the constant temperature subsystem and the cooling subsystem are controlled to work;
and when the preset target temperature is smaller than a preset second threshold value, controlling the constant temperature subsystem and the cooling subsystem to work.
2. The control method of claim 1, wherein said controlling operation of both said constant temperature subsystem and said temperature reduction subsystem comprises:
and controlling the opening of the electronic expansion valve at the inlet of the evaporator in the constant temperature subsystem to be larger than zero, and controlling the opening of the electronic expansion valve at the inlet of the evaporator in the cooling subsystem to be larger than zero.
3. The control method according to claim 1, wherein said controlling the operation of the constant temperature subsystem and controlling the cooling subsystem to stop operation comprises:
and controlling the opening of the electronic expansion valve at the inlet of the evaporator in the constant temperature subsystem to be increased and then decreased, and controlling the opening of the electronic expansion valve at the inlet of the evaporator in the cooling subsystem to be zero.
4. The control method according to claim 1, wherein the controlling the operation of the constant temperature subsystem or the cooling subsystem according to the ambient temperature and a preset target temperature includes:
when the preset target temperature is greater than the ambient temperature, the difference value between the preset target temperature and the ambient temperature is smaller than or equal to a preset first threshold value, and the preset target temperature is greater than a preset second threshold value, the constant temperature subsystem is controlled to work, and the cooling subsystem is controlled to stop working;
and when the preset target temperature is smaller than a preset second threshold value, controlling the constant temperature subsystem to stop working and controlling the cooling subsystem to work.
5. The control device of the temperature regulating system is characterized in that the temperature regulating system comprises a constant temperature subsystem and a cooling subsystem, and the constant temperature subsystem and the cooling subsystem are both used for regulating the temperature of an environmental test chamber;
the control device includes:
the information acquisition module is used for acquiring the ambient temperature and the temperature regulation requirement of the environmental test box;
the first control module is used for controlling at least one of the constant temperature subsystem and the cooling subsystem to work according to the ambient temperature and a preset target temperature if the temperature regulation requirement is a cooling requirement;
the first control module includes: the first control unit is used for controlling the constant temperature subsystem to work and controlling the cooling subsystem to stop working when the preset target temperature is greater than the ambient temperature and the difference value between the preset target temperature and the ambient temperature is greater than a preset first threshold value; the second control unit is used for controlling the constant temperature subsystem and the cooling subsystem to work when the preset target temperature is larger than the ambient temperature and the difference value between the preset target temperature and the ambient temperature is smaller than or equal to a preset first threshold value and the preset target temperature is larger than a preset second threshold value; the second control unit is also used for controlling the constant temperature subsystem and the cooling subsystem to work when the preset target temperature is smaller than a preset second threshold value;
and the second control module is used for controlling the constant temperature subsystem or the cooling subsystem to work according to the ambient temperature and the preset target temperature if the temperature regulation requirement is a constant temperature requirement.
6. An environmental test chamber comprising a control system and a tempering system according to any one of claims 1-4, said control system being electrically connected to said tempering system, said control system comprising a control device according to claim 5.
7. The environmental chamber of claim 6 wherein the control system includes a controller and a touch screen, the controller being electrically connected to the touch screen, the control device of claim 5 being integrated into the controller.
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| CN102183102A (en) * | 2011-03-22 | 2011-09-14 | 扬州众智制冷设备有限公司 | Intelligent energy-saving constant-temperature water cooling unit and water cooling control method |
| CN109140628A (en) * | 2018-07-21 | 2019-01-04 | 青岛奥利凯中央空调有限公司 | A kind of direct-expansion type water cooling cold-hot wind unit control method and its humidity control system |
| CN109237712A (en) * | 2018-09-25 | 2019-01-18 | 珠海格力电器股份有限公司 | Water temperature control method for multi-module unit |
| CN114636254A (en) * | 2022-03-29 | 2022-06-17 | 江苏拓米洛环境试验设备有限公司 | Double-deck refrigerating system and double-deck proof box |
| CN114879781A (en) * | 2022-06-23 | 2022-08-09 | 中国联合网络通信集团有限公司 | Temperature control method, device and storage medium |
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- 2022-12-09 CN CN202211585077.0A patent/CN115981389B/en active Active
Patent Citations (5)
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| CN102183102A (en) * | 2011-03-22 | 2011-09-14 | 扬州众智制冷设备有限公司 | Intelligent energy-saving constant-temperature water cooling unit and water cooling control method |
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| CN109237712A (en) * | 2018-09-25 | 2019-01-18 | 珠海格力电器股份有限公司 | Water temperature control method for multi-module unit |
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| CN115981389A (en) | 2023-04-18 |
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