CN117167997A - Temperature control method, device, electronic equipment and storage medium - Google Patents
Temperature control method, device, electronic equipment and storage medium Download PDFInfo
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Abstract
The application relates to a temperature control method, a device, an electronic device and a storage medium, wherein the method is applied to refrigeration equipment, a first capillary tube and a second capillary tube with unequal lengths are arranged in parallel on a refrigerant flow path of the refrigeration equipment, and the method comprises the following steps: acquiring a set storage temperature of the refrigeration equipment, a current storage temperature inside the refrigeration equipment and an environment temperature of an environment where the refrigeration equipment is located; and controlling the condition that the first capillary tube and the second capillary tube are connected into the refrigerant flow path according to the set storage temperature, the current storage temperature and the environment temperature so as to enable the current storage temperature to reach the set storage temperature. Therefore, two capillaries replace an electronic expansion valve to serve as a throttling element, the cost is reduced, and the exhaust pressure and the temperature of the compressor are reduced through reasonably accessing the refrigerant flow paths of the two capillaries connected in parallel, so that the compressor is prevented from tripping.
Description
Technical Field
The present application relates to the field of intelligent home appliances, and in particular, to a temperature control method, a temperature control device, an electronic device, and a storage medium.
Background
With the progress of modern life, the pursuit of people on quality of life and comfort is continuously improved, so that the development of the field of intelligent household appliances is promoted, and refrigeration equipment such as refrigerators and the like gradually enter the life of people. Among them, the refrigerator and other refrigeration equipment are mainly used for storing food. In the process of storing the food materials, the storage temperature of refrigeration equipment such as a refrigerator and the like can be controlled to achieve the aim of preserving and storing the food materials.
At present, the opening of an electronic expansion valve on a refrigerant flow path or the frequency of a variable frequency compressor is controlled to regulate the flow of the refrigerant, so that the aim of controlling the storage temperature of refrigeration equipment such as a refrigerator is fulfilled. However, electronic expansion valves are expensive and their control is complex. In addition, the variable frequency compressor can only regulate speed in a set rotating speed interval, and even if the variable frequency compressor is started to run at the lowest rotating speed under the condition of large heat load of refrigeration equipment such as a refrigerator, the variable frequency compressor can possibly cause high exhaust pressure and temperature and even cause the variable frequency compressor to jump.
Disclosure of Invention
In order to solve the problems that the electronic expansion valve is expensive and the control is complex. In addition, the variable frequency compressor can only regulate speed in a set rotating speed interval, and even if the variable frequency compressor is started to run at the lowest rotating speed under the condition of high heat load of refrigeration equipment such as a refrigerator, the variable frequency compressor can possibly cause high exhaust pressure and temperature and even cause the technical problem of tripping of the variable frequency compressor. The specific technical scheme is as follows:
In a first aspect, the present application provides a temperature control method applied to a refrigeration device, where a first capillary tube and a second capillary tube with unequal lengths are arranged in parallel on a refrigerant flow path of the refrigeration device, the method includes:
acquiring a set storage temperature of the refrigeration equipment, a current storage temperature inside the refrigeration equipment and an environment temperature of an environment where the refrigeration equipment is located;
and controlling the condition that the first capillary tube and the second capillary tube are connected into the refrigerant flow path according to the set storage temperature, the current storage temperature and the environment temperature so as to enable the current storage temperature to reach the set storage temperature.
In an optional embodiment, the refrigerant flow path is provided with a compressor, a condenser, a filter, a two-position three-way electromagnetic valve, the first capillary tube, the second capillary tube and an evaporator in sequence according to the refrigerant flow direction;
one end of the compressor is connected with one end of the condenser, the other end of the condenser is connected with one end of the filter, and the other end of the filter is connected with the first end of the two-position three-way electromagnetic valve;
the second end of the two-position three-way electromagnetic valve is connected with one end of the first capillary tube, the other end of the first capillary tube is connected with one end of the evaporator, the third end of the two-position three-way electromagnetic valve is connected with one end of the second capillary tube, the other end of the second capillary tube is connected with one end of the evaporator, and the other end of the evaporator is connected with the other end of the compressor.
In an alternative embodiment, the length of the first capillary is greater than the length of the second capillary;
the controlling the condition that the first capillary tube and the second capillary tube are connected to the refrigerant flow path according to the set storage temperature, the current storage temperature and the ambient temperature, so that the current storage temperature reaches the set storage temperature, includes:
judging whether the current storage temperature and the environment temperature meet a preset temperature requirement or not under the condition that the set storage temperature is smaller than a preset first temperature threshold;
controlling the second capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature and the ambient temperature meet the preset temperature requirement;
controlling the operation of the compressor according to a preset first control strategy of the compressor, and judging whether the current storage temperature is reduced to a preset second temperature threshold value or not;
controlling the first capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature is reduced to the preset second temperature threshold value;
and controlling the operation of the compressor according to a preset second control strategy of the compressor so as to enable the current storage temperature to reach the set storage temperature.
In an optional embodiment, the determining whether the current storage temperature and the ambient temperature meet a preset temperature requirement when the set storage temperature is less than a preset first temperature threshold includes:
judging whether the current storage temperature is greater than a preset third temperature threshold value or not and judging whether the environment temperature is greater than a preset fourth temperature threshold value or not under the condition that the set storage temperature is less than a preset first temperature threshold value;
and controlling the second capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature and the ambient temperature meet the preset temperature requirement, including:
and controlling the second capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature is greater than the preset third temperature threshold and the environment temperature is greater than the preset fourth temperature threshold.
In an alternative embodiment, the controlling the second capillary tube to be connected to the refrigerant flow path includes:
controlling the two-position three-way electromagnetic valve to be electrified so as to control the second capillary tube to be connected into the refrigerant flow path;
the controlling the first capillary tube to be connected into the refrigerant flow path comprises the following steps:
And controlling the two-position three-way electromagnetic valve to be powered off so as to control the first capillary tube to be connected into the refrigerant flow path.
In an alternative embodiment, the controlling the operation of the compressor according to a preset first control strategy of the compressor includes:
and controlling the compressor to start at the lowest frequency and controlling the compressor to operate according to the first frequency rise to the maximum frequency.
In an alternative embodiment, the controlling the operation of the compressor according to a preset second control strategy of the compressor includes:
and controlling the compressor to be in frequency reduction to the lowest frequency and run at the lowest frequency, and controlling the compressor to run at the maximum frequency according to the second frequency increase.
In an alternative embodiment, the method further comprises:
controlling the first capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature and the ambient temperature do not meet the preset temperature requirement;
and controlling the operation of the compressor according to a preset third control strategy of the compressor so as to enable the current storage temperature to reach the set storage temperature.
In an optional embodiment, the controlling the first capillary tube to be connected to the refrigerant flow path when the current storage temperature and the ambient temperature do not meet a preset temperature requirement includes:
And controlling the first capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature is not greater than a preset third temperature threshold value and/or the ambient temperature is not greater than a preset fourth temperature threshold value.
In an alternative embodiment, the controlling the first capillary tube to be connected to the refrigerant flow path includes:
and keeping the two-position three-way electromagnetic valve to be powered off so as to control the first capillary tube to be connected into the refrigerant flow path.
In an alternative embodiment, the controlling the operation of the compressor according to a preset third control strategy of the compressor includes:
and controlling the compressor to start at the lowest frequency and controlling the compressor to operate according to the third frequency rise to the maximum frequency.
In an alternative embodiment, the method further comprises:
controlling the second capillary tube to be connected into the refrigerant flow path under the condition that the set storage temperature is not smaller than the preset first temperature threshold value;
and controlling the operation of the compressor according to a preset fourth control strategy of the compressor so as to enable the current storage temperature to reach the set storage temperature.
In an alternative embodiment, the controlling the second capillary tube to be connected to the refrigerant flow path includes:
And controlling the two-position three-way electromagnetic valve to be electrified so as to control the second capillary tube to be connected into the refrigerant flow path.
In an alternative embodiment, the controlling the operation of the compressor according to a preset fourth control strategy of the compressor includes:
and controlling the compressor to start at the lowest frequency, and controlling the compressor to operate according to the fourth frequency rise to the maximum frequency.
In a second aspect, the present application provides a temperature control device applied to a refrigeration apparatus, where a first capillary tube and a second capillary tube with unequal lengths are arranged in parallel on a refrigerant flow path of the refrigeration apparatus, the device includes:
the temperature acquisition module is used for acquiring the set storage temperature of the refrigeration equipment, the current storage temperature inside the refrigeration equipment and the environment temperature of the environment where the refrigeration equipment is located;
and the capillary control module is used for controlling the condition that the first capillary and the second capillary are connected into the refrigerant flow path according to the set storage temperature, the current storage temperature and the environment temperature so as to enable the current storage temperature to reach the set storage temperature.
In a third aspect, there is also provided an electronic device, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus;
A memory for storing a computer program;
and a processor for implementing the temperature control method according to any one of the first aspect when executing the program stored in the memory.
In a fourth aspect, there is also provided a storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the temperature control method of any one of the first aspects above.
In a fifth aspect, there is also provided a computer program product containing instructions which, when run on a computer, cause the computer to perform any of the temperature control methods described above.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: the method provided by the embodiment of the application is applied to refrigeration equipment, a first capillary tube and a second capillary tube with unequal lengths are arranged on a refrigerant flow path of the refrigeration equipment in parallel, the set storage temperature of the refrigeration equipment and the current storage temperature in the refrigeration equipment are obtained, the environment temperature of the environment where the refrigeration equipment is located is obtained, and the condition that the first capillary tube and the second capillary tube are connected into the refrigerant flow path is controlled according to the set storage temperature, the current storage temperature and the environment temperature, so that the current storage temperature reaches the set storage temperature.
The set storage temperature of the refrigeration equipment, the current storage temperature of the interior of the refrigeration equipment and the environmental temperature of the environment where the refrigeration equipment is located are obtained, and according to the set storage temperature, the current storage temperature and the environmental temperature, the condition that a first capillary tube and a second capillary tube which are arranged on a refrigerant flow path of the refrigeration equipment in parallel are connected into a refrigerant flow path is controlled, so that the current storage temperature reaches the set storage temperature, two capillaries are used for replacing an electronic expansion valve to serve as throttling elements, the cost is reduced, and the exhaust pressure and the temperature of a compressor are reduced by reasonably connecting the two capillaries in parallel into the refrigerant flow path, and the compressor is prevented from tripping.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
Fig. 1 is a schematic diagram of a refrigeration system according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an implementation flow of a temperature control method according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of another embodiment of a temperature control method according to the present application;
fig. 4 is a schematic structural diagram of a temperature control device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The following disclosure provides many different embodiments, or examples, for implementing different structures of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Fig. 1 is a schematic diagram of a refrigeration system according to an embodiment of the present application, where an arrow direction indicates a refrigerant (refrigerant) flow direction. The refrigerating system is applied to refrigerating equipment, and a compressor A, a condenser C, a filter D, a two-position three-way electromagnetic valve V, a first capillary tube J1, a second capillary tube J2 and an evaporator E are sequentially arranged on a refrigerant flow path of the refrigerating system according to the refrigerant flow direction. A first capillary tube J1 and a second capillary tube J2 with unequal lengths are arranged between the two-position three-way electromagnetic valve V and the evaporator E in parallel.
One end of the compressor A is connected with one end of the condenser C, the other end of the condenser C is connected with one end of the filter D, and the other end of the filter D is connected with the first end of the two-position three-way electromagnetic valve V; the second end of the two-position three-way electromagnetic valve V is connected with one end of the first capillary tube J1, the other end of the first capillary tube J1 is connected with one end of the evaporator E, the third end of the two-position three-way electromagnetic valve V is connected with one end of the second capillary tube J2, the other end of the second capillary tube J2 is connected with one end of the evaporator E, and the other end of the evaporator E is connected with the other end of the compressor A.
Regarding the length of the first capillary tube J1, it is required to satisfy that the compressor can reach the minimum temperature under the condition of full-frequency operation, and the length of the second capillary tube J2 is required to satisfy that the compressor can reach the temperature of the first capillary tube J1 under the condition of full-frequency operation under the condition of minimum-frequency operation. By switching the first capillary J1 and the second capillary J2, the cooling temperature range can be extended to a wider temperature range. Wherein the length of the first capillary J1 is greater than the length of the second capillary J2.
For example, when the first capillary tube J1 is connected to the refrigerant flow path, the temperatures of the corresponding refrigeration equipment can reach T1 and T2 when the compressor runs at low frequency and full frequency, that is, the temperature range is T1-T2, preferably, T1-t2=0 to-40 ℃. When the second capillary tube J2 is connected to the refrigerant flow path, the temperatures of the corresponding refrigeration equipment can reach T3 and T4 when the compressor runs at low frequency and full frequency, namely, the temperature range is T3-T4, preferably, T3-t4=10 to-5 ℃. By switching the first capillary J1 and the second capillary J2 in this way, the cooling temperature range can be extended to a wider temperature range.
In the first capillary tube J1 and the second capillary tube J2, only one of the capillary tubes may be connected to the refrigerant flow path at a time, and the other capillary tube may be left idle. For the two-position three-way electromagnetic valve V, the second capillary tube J2 is connected to the refrigerant flow path under the condition that the two-position three-way electromagnetic valve V is electrified, and the first capillary tube J1 is connected to the refrigerant flow path under the condition that the two-position three-way electromagnetic valve V is deenergized.
Based on the schematic diagram of the refrigeration system shown in fig. 1, as shown in fig. 2, a temperature control method provided in an embodiment of the present application may specifically include the following steps:
s201, acquiring a set storage temperature of the refrigeration equipment, a current storage temperature inside the refrigeration equipment and an environment temperature of an environment where the refrigeration equipment is located.
In the embodiment of the application, the refrigerating equipment is powered on, which means that the refrigeration pulling temperature needs to be started at the moment. Thereby, the set storage temperature of the refrigeration equipment and the current storage temperature inside the refrigeration equipment can be obtained. In addition, it is also necessary to obtain the ambient temperature of the environment in which the refrigeration equipment is located.
For example, the refrigerator is powered up, the refrigeration and warm-up is started, and the set storage temperature of the refrigerator and the current storage temperature of the interior of the refrigerator are obtained. In addition, it is also necessary to obtain the ambient temperature of the environment in which the refrigeration equipment is located.
It should be noted that, the set storage temperature of the refrigeration device may be a storage temperature set by a user, or may be a storage temperature determined according to food materials stored in the refrigeration device at present, which is not limited in the embodiment of the present application.
S202, controlling the condition that the first capillary tube and the second capillary tube are connected into a refrigerant flow path according to the set storage temperature, the current storage temperature and the environment temperature so that the current storage temperature reaches the set storage temperature.
In the embodiment of the application, for the set storage temperature of the refrigeration equipment, the current storage temperature in the refrigeration equipment and the environmental temperature of the environment where the refrigeration equipment is located, the condition that the first capillary tube and the second capillary tube are connected into the refrigerant flow path can be controlled according to the set storage temperature, the current storage temperature and the environmental temperature, so that the current storage temperature reaches the set storage temperature.
It should be noted that, for the refrigeration device, according to the set storage temperature, the current storage temperature and the ambient temperature, it is determined how to use the first capillary tube and the second capillary tube, i.e. how to connect the first capillary tube and the second capillary tube to the refrigerant flow path, so as to achieve cooling, and make the current storage temperature reach the set storage temperature.
The refrigerating equipment determines how the first capillary tube and the second capillary tube are connected into the refrigerant flow path according to the set storage temperature, the current storage temperature and the environment temperature, so that the cooling is realized, the current storage temperature reaches the set storage temperature, the exhaust pressure and the temperature of the compressor can be reduced, the compressor is prevented from tripping, and two capillaries can be used for replacing an electronic expansion valve to serve as throttling elements, so that the cost is reduced. In addition, the use of the double capillary tube can enlarge the refrigerating temperature area and meet the refrigerating requirement.
Through the description of the technical scheme provided by the embodiment of the application, the set storage temperature of the refrigeration equipment and the current storage temperature inside the refrigeration equipment are obtained, the environment temperature of the environment where the refrigeration equipment is located is obtained, and the condition that the first capillary tube and the second capillary tube are connected into the refrigerant flow path is controlled according to the set storage temperature, the current storage temperature and the environment temperature, so that the current storage temperature reaches the set storage temperature.
The set storage temperature of the refrigeration equipment, the current storage temperature of the interior of the refrigeration equipment and the environmental temperature of the environment where the refrigeration equipment is located are obtained, and according to the set storage temperature, the current storage temperature and the environmental temperature, the condition that a first capillary tube and a second capillary tube which are arranged on a refrigerant flow path of the refrigeration equipment in parallel are connected into a refrigerant flow path is controlled, so that the current storage temperature reaches the set storage temperature, two capillaries are used for replacing an electronic expansion valve to serve as throttling elements, the cost is reduced, and the exhaust pressure and the temperature of a compressor are reduced by reasonably connecting the two capillaries in parallel into the refrigerant flow path, and the compressor is prevented from tripping. In addition, the use of the double capillary tube can enlarge the refrigerating temperature area and meet the refrigerating requirement.
As shown in fig. 3, another temperature control method provided in an embodiment of the present application may specifically include the following steps:
s301, acquiring a set storage temperature of the refrigeration equipment, a current storage temperature inside the refrigeration equipment and an environment temperature of an environment where the refrigeration equipment is located.
In the embodiment of the present application, the step is similar to the step S201, and the embodiment of the present application is not described here again.
S302, judging whether the current storage temperature and the environment temperature meet the preset temperature requirement or not under the condition that the set storage temperature is smaller than the preset first temperature threshold.
S303, controlling the second capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature and the ambient temperature meet the preset temperature requirement.
In the embodiment of the application, for the set storage temperature of the refrigeration equipment, when the set storage temperature is smaller than the preset first temperature threshold value, the set storage temperature of the refrigeration equipment is lower, at the moment, whether the current storage temperature inside the refrigeration equipment and the environmental temperature of the environment where the refrigeration equipment is located meet the preset temperature requirement or not is judged, and when the current storage temperature and the environmental temperature meet the preset temperature requirement, the second capillary tube is controlled to be connected into the refrigerant flow path.
And when the current storage temperature is greater than the preset third temperature threshold and the ambient temperature is greater than the preset fourth temperature threshold, controlling the second capillary tube to be connected to the refrigerant flow path.
For example, if the set storage temperature Ts is less than-2.5 ℃, it can be determined whether the current storage temperature Td is greater than 25 ℃ and whether the ambient temperature Ta is greater than 25 ℃, and if both the current storage temperature Td and the ambient temperature Ta are greater than 25 ℃, the second capillary J2 is controlled to be connected to the refrigerant flow path. For the preset first temperature threshold, an average value of the left boundary value of the controllable temperature region of the first capillary J1 and the right boundary value of the controllable temperature region of the second capillary J2 may be selected as the preset first temperature threshold.
It should be noted that, when the set storage temperature is smaller than the preset first temperature threshold, the current storage temperature is greater than the preset third temperature threshold, and the ambient temperature is greater than the preset fourth temperature threshold, this means that the heat load is greater at this time, and a larger refrigeration capacity is required, if the first capillary, i.e. the long capillary, is directly used for throttling, the discharge pressure and temperature of the compressor are higher, thereby causing the compressor to trip. Therefore, the second capillary tube, namely the short capillary tube, can be used for precooling, and the long capillary tube is switched to throttle, so that the discharge pressure and the temperature of the compressor can be reduced, and the normal start of the compressor can be ensured.
The two-position three-way electromagnetic valve can be controlled to be electrified, so that the second capillary tube can be connected into the refrigerant flow, and the second capillary tube can be used for throttling the refrigerant at the moment, so that the precooling is convenient.
S304, controlling the operation of the compressor according to a preset first control strategy of the compressor, and judging whether the current storage temperature is reduced to a preset second temperature threshold value.
In the embodiment of the application, after the second capillary tube is connected into the refrigerant flow path, the operation of the compressor can be controlled according to a preset first control strategy of the compressor. The compressor, which may be a variable frequency compressor, for example, may be started at a minimum frequency and then quickly increased to a maximum frequency to operate at full frequency.
Based on this, for the control of the compressor, it is possible to specifically control the compressor to start at the lowest frequency and then control the compressor to operate at the first up-conversion frequency up to the maximum frequency. For example, the compressor is controlled to start at a frequency of 33Hz and then run at an up-conversion frequency of 1Hz/5s up to a maximum frequency of 75 Hz.
It should be noted that, during the operation of the compressor at the full frequency, the current storage temperature in the refrigeration device decreases, so after the compressor is operated at the full frequency for a period of time, it may be determined whether the current storage temperature decreases to the preset second temperature threshold. For example, it is determined whether the current storage temperature falls to T0, where T0 is greater than T1, preferably, t0=10 ℃.
S305, controlling the first capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature is reduced to a preset second temperature threshold value.
In the embodiment of the application, for the current storage temperature in the refrigeration equipment, when the current storage temperature is reduced to a preset second temperature threshold value, the pre-cooling is finished through the second capillary tube, and at the moment, the first capillary tube can be controlled to be connected into the refrigerant flow path.
The first capillary tube can be controlled to be powered off, so that the first capillary tube can be controlled to be connected into a refrigerant flow path, the first capillary tube can be used for throttling refrigerant, deep cooling is carried out, and the current storage temperature can be promoted to reach the set storage temperature as soon as possible.
S306, controlling the operation of the compressor according to a preset second control strategy of the compressor so as to enable the current storage temperature to reach the set storage temperature.
In the embodiment of the application, after the first capillary tube is connected into the refrigerant flow path, the operation of the compressor can be controlled according to a preset second control strategy of the compressor so as to enable the current storage temperature to reach the set storage temperature. Wherein, for the compressor, the compressor can be operated at the lowest frequency and then be operated at a specific up-conversion frequency up to full-frequency.
Based on this, the compressor may be controlled to be down-converted to the lowest frequency, run at the lowest frequency, and then be controlled to run at the second up-conversion frequency up to the maximum frequency. For example, the compressor is controlled to run down to a frequency of 33Hz, run at 33Hz, and then run at an up-conversion frequency of 1Hz/3min up to a maximum frequency of 75 Hz.
In addition, when the current storage temperature reaches the set storage temperature, the compressor is controlled to stop and step into a stop stage. When the current storage temperature rises to a certain temperature (for example, ts+T), the refrigeration requirement is not met, and the compressor is controlled to start to rise to a target frequency for operation. And when the current storage temperature reaches the set storage temperature, controlling the compressor to stop, and repeating the steps. The target frequency is the compressor operating frequency at which the refrigeration equipment can reduce the current storage temperature to the set storage temperature within a certain time.
S307, controlling the first capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature and the ambient temperature do not meet the preset temperature requirement.
In the embodiment of the application, for the set storage temperature of the refrigeration equipment, when the set storage temperature is smaller than the preset first temperature threshold value, the set storage temperature of the refrigeration equipment is lower, at the moment, whether the current storage temperature inside the refrigeration equipment and the environmental temperature of the environment where the refrigeration equipment is located meet the preset temperature requirement or not is judged, and when the current storage temperature and the environmental temperature do not meet the preset temperature requirement, the first capillary tube is controlled to be connected into the refrigerant flow path.
And when the current storage temperature is not greater than the preset third temperature threshold value and/or the ambient temperature is not greater than the preset fourth temperature threshold value, controlling the first capillary tube to be connected into the refrigerant flow path.
For example, in the case where the set storage temperature Ts is less than-2.5 ℃, it may be determined whether the current storage temperature Td is greater than 25 ℃, and whether the ambient temperature Ta is greater than 25 ℃, and in the case where the current storage temperature Td and/or the ambient temperature Ta is not greater than 25 ℃, the first capillary tube is controlled to be connected to the refrigerant flow path.
It should be noted that, when the set storage temperature is smaller than the preset first temperature threshold, and the current storage temperature is not greater than the preset third temperature threshold, and/or the ambient temperature is not greater than the preset fourth temperature threshold, this represents that the thermal load is smaller at this time, and a smaller refrigeration capacity is required, the first capillary tube may be directly used for throttling, and at this time, the exhaust pressure and temperature of the compressor may not be too high, and normal start of the compressor may be ensured.
The two-position three-way electromagnetic valve can be kept in a power-off state, so that the first capillary tube can be connected into a refrigerant flow path, and at the moment, the first capillary tube can be used for throttling the refrigerant to cool down, so that the current storage temperature is promoted to reach the set storage temperature as soon as possible.
S308, controlling the operation of the compressor according to a preset third control strategy of the compressor so as to enable the current storage temperature to reach the set storage temperature.
In the embodiment of the application, after the first capillary tube is connected into the refrigerant flow path, the operation of the compressor can be controlled according to a preset third control strategy of the compressor so as to enable the current storage temperature to reach the set storage temperature. The compressor can be started at the lowest frequency and then run at a specific up-conversion frequency up to full-frequency.
Based on this, the control of the compressor may specifically be to control the compressor to start at the lowest frequency and to control the compressor to operate at the third up-conversion frequency up to the maximum frequency. For example, the compressor is controlled to start at a frequency of 33Hz and then run at an up-conversion frequency of 1Hz/1min up to a maximum frequency of 75 Hz.
In addition, when the current storage temperature reaches the set storage temperature, the compressor is controlled to stop and step into a stop stage. When the current storage temperature rises to a certain temperature (for example, ts+T), the refrigeration requirement is not met, and the compressor is controlled to start to rise to a target frequency for operation. And when the current storage temperature reaches the set storage temperature, controlling the compressor to stop, and repeating the steps. The target frequency is the compressor operating frequency at which the refrigeration equipment can reduce the current storage temperature to the set storage temperature within a certain time.
S309, controlling the second capillary tube to be connected into the refrigerant flow path under the condition that the set storage temperature is not smaller than the preset first temperature threshold value.
In the embodiment of the application, when the set storage temperature is not smaller than the preset first temperature threshold, the set storage temperature is higher, and the second capillary tube can be directly used at the moment, so that the current storage temperature can be reduced to the set storage temperature, and the second capillary tube is controlled to be connected into the refrigerant flow path.
The two-position three-way electromagnetic valve can be controlled to be electrified, so that the second capillary tube can be controlled to be connected into a refrigerant flow path, the second capillary tube is used for throttling the refrigerant, cooling is performed, and the current storage temperature is promoted to reach the set storage temperature as soon as possible.
S310, controlling the operation of the compressor according to a preset fourth control strategy of the compressor so as to enable the current storage temperature to reach the set storage temperature.
In the embodiment of the application, after the second capillary tube is connected into the refrigerant flow path, the operation of the compressor can be controlled according to a preset fourth control strategy of the compressor so as to enable the current storage temperature to reach the set storage temperature. Wherein for a compressor, it is possible to start at the lowest frequency and then to run at a specific up-conversion frequency up to full frequency.
Based on this, the control of the compressor may specifically be to control the compressor to start at the lowest frequency and then control the compressor to operate at the fourth up-conversion frequency up to the maximum frequency. For example, the compressor is controlled to start at a frequency of 33Hz and then run at an up-conversion frequency of 1Hz/1min up to a maximum frequency of 75 Hz.
In addition, when the current storage temperature reaches the set storage temperature, the compressor is controlled to stop and step into a stop stage. When the current storage temperature rises to a certain temperature (for example, ts+T), the refrigeration requirement is not met, and the compressor is controlled to start to rise to a target frequency for operation. And when the current storage temperature reaches the set storage temperature, controlling the compressor to stop, and repeating the steps. The target frequency is the compressor operating frequency at which the refrigeration equipment can reduce the current storage temperature to the set storage temperature within a certain time.
The set storage temperature of the refrigeration equipment, the current storage temperature of the interior of the refrigeration equipment and the environmental temperature of the environment where the refrigeration equipment is located are obtained, and according to the set storage temperature, the current storage temperature and the environmental temperature, the condition that a first capillary tube and a second capillary tube which are arranged on a refrigerant flow path of the refrigeration equipment in parallel are connected into a refrigerant flow path is controlled, so that the current storage temperature reaches the set storage temperature, two capillaries are used for replacing an electronic expansion valve to serve as throttling elements, the cost is reduced, and the exhaust pressure and the temperature of a compressor are reduced by reasonably connecting the two capillaries in parallel into the refrigerant flow path, and the compressor is prevented from tripping. In addition, the use of the double capillary tube can enlarge the refrigerating temperature area and meet the refrigerating requirement.
Corresponding to the above method embodiment, the embodiment of the present application further provides a temperature control device, as shown in fig. 4, where the device may include: a temperature acquisition module 410, a capillary control module 420.
A temperature obtaining module 410, configured to obtain a set storage temperature of the refrigeration equipment, and a current storage temperature inside the refrigeration equipment, and obtain an environmental temperature of an environment in which the refrigeration equipment is located;
and the capillary control module 420 is configured to control the connection of the first capillary and the second capillary to the refrigerant flow path according to the set storage temperature, the current storage temperature, and the ambient temperature, so that the current storage temperature reaches the set storage temperature.
The embodiment of the application also provides an electronic device, as shown in fig. 5, which comprises a processor 51, a communication interface 52, a memory 53 and a communication bus 54, wherein the processor 51, the communication interface 52 and the memory 53 complete communication with each other through the communication bus 54,
a memory 53 for storing a computer program;
the processor 51 is configured to execute a program stored in the memory 53, and implement the following steps:
acquiring a set storage temperature of the refrigeration equipment, a current storage temperature inside the refrigeration equipment and an environment temperature of an environment where the refrigeration equipment is located; and controlling the condition that the first capillary tube and the second capillary tube are connected into the refrigerant flow path according to the set storage temperature, the current storage temperature and the environment temperature so as to enable the current storage temperature to reach the set storage temperature.
The communication bus mentioned by the above electronic device may be a peripheral component interconnect standard (Peripheral Component Interconnect, abbreviated as PCI) bus or an extended industry standard architecture (Extended Industry Standard Architecture, abbreviated as EISA) bus, or the like. The communication bus may be classified as an address bus, a data bus, a control bus, or the like. For ease of illustration, the figures are shown with only one bold line, but not with only one bus or one type of bus.
The communication interface is used for communication between the electronic device and other devices.
The memory may include random access memory (Random Access Memory, RAM) or non-volatile memory (non-volatile memory), such as at least one disk memory. Optionally, the memory may also be at least one memory device located remotely from the aforementioned processor.
The processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but also digital signal processors (Digital Signal Processing, DSP for short), application specific integrated circuits (Application Specific Integrated Circuit, ASIC for short), field-programmable gate arrays (Field-Programmable Gate Array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
In yet another embodiment of the present application, a storage medium is provided, in which instructions are stored, which when run on a computer, cause the computer to perform the temperature control method according to any one of the above embodiments.
In yet another embodiment of the present application, a computer program product comprising instructions which, when run on a computer, causes the computer to perform the temperature control method of any of the above embodiments is also provided.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a storage medium or transmitted from one storage medium to another, for example, from one website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The storage media may be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (17)
1. A temperature control method, which is characterized in that the method is applied to a refrigeration device, a first capillary tube and a second capillary tube with unequal lengths are arranged in parallel on a refrigerant flow path of the refrigeration device, and the method comprises the following steps:
acquiring a set storage temperature of the refrigeration equipment, a current storage temperature inside the refrigeration equipment and an environment temperature of an environment where the refrigeration equipment is located;
and controlling the condition that the first capillary tube and the second capillary tube are connected into the refrigerant flow path according to the set storage temperature, the current storage temperature and the environment temperature so as to enable the current storage temperature to reach the set storage temperature.
2. The method of claim 1, wherein the refrigerant flow path is provided with a compressor, a condenser, a filter, a two-position three-way solenoid valve, the first capillary tube, the second capillary tube, and an evaporator in this order according to a refrigerant flow direction;
One end of the compressor is connected with one end of the condenser, the other end of the condenser is connected with one end of the filter, and the other end of the filter is connected with the first end of the two-position three-way electromagnetic valve;
the second end of the two-position three-way electromagnetic valve is connected with one end of the first capillary tube, the other end of the first capillary tube is connected with one end of the evaporator, the third end of the two-position three-way electromagnetic valve is connected with one end of the second capillary tube, the other end of the second capillary tube is connected with one end of the evaporator, and the other end of the evaporator is connected with the other end of the compressor.
3. The method of claim 2, wherein the length of the first capillary is greater than the length of the second capillary;
the controlling the condition that the first capillary tube and the second capillary tube are connected to the refrigerant flow path according to the set storage temperature, the current storage temperature and the ambient temperature, so that the current storage temperature reaches the set storage temperature, includes:
judging whether the current storage temperature and the environment temperature meet a preset temperature requirement or not under the condition that the set storage temperature is smaller than a preset first temperature threshold;
Controlling the second capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature and the ambient temperature meet the preset temperature requirement;
controlling the operation of the compressor according to a preset first control strategy of the compressor, and judging whether the current storage temperature is reduced to a preset second temperature threshold value or not;
controlling the first capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature is reduced to the preset second temperature threshold value;
and controlling the operation of the compressor according to a preset second control strategy of the compressor so as to enable the current storage temperature to reach the set storage temperature.
4. The method of claim 3, wherein the determining whether the current storage temperature and the ambient temperature meet a preset temperature requirement if the set storage temperature is less than a preset first temperature threshold comprises:
judging whether the current storage temperature is greater than a preset third temperature threshold value or not and judging whether the environment temperature is greater than a preset fourth temperature threshold value or not under the condition that the set storage temperature is less than a preset first temperature threshold value;
and controlling the second capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature and the ambient temperature meet the preset temperature requirement, including:
And controlling the second capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature is greater than the preset third temperature threshold and the environment temperature is greater than the preset fourth temperature threshold.
5. The method of claim 3 or 4, wherein said controlling the second capillary tube to access the refrigerant flow path comprises:
controlling the two-position three-way electromagnetic valve to be electrified so as to control the second capillary tube to be connected into the refrigerant flow path;
the controlling the first capillary tube to be connected into the refrigerant flow path comprises the following steps:
and controlling the two-position three-way electromagnetic valve to be powered off so as to control the first capillary tube to be connected into the refrigerant flow path.
6. The method of claim 3, wherein said controlling operation of said compressor in accordance with a preset first control strategy for the compressor comprises:
and controlling the compressor to start at the lowest frequency and controlling the compressor to operate according to the first frequency rise to the maximum frequency.
7. The method of claim 3, wherein said controlling operation of said compressor in accordance with a preset second control strategy for said compressor comprises:
and controlling the compressor to be in frequency reduction to the lowest frequency and run at the lowest frequency, and controlling the compressor to run at the maximum frequency according to the second frequency increase.
8. A method according to claim 3, characterized in that the method further comprises:
controlling the first capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature and the ambient temperature do not meet the preset temperature requirement;
and controlling the operation of the compressor according to a preset third control strategy of the compressor so as to enable the current storage temperature to reach the set storage temperature.
9. The method of claim 8, wherein controlling the first capillary tube to access the refrigerant flow path if the current storage temperature and the ambient temperature do not meet a preset temperature requirement, comprises:
and controlling the first capillary tube to be connected into the refrigerant flow path under the condition that the current storage temperature is not greater than a preset third temperature threshold value and/or the ambient temperature is not greater than a preset fourth temperature threshold value.
10. The method of claim 8 or 9, wherein said controlling the first capillary tube to access the refrigerant flow path comprises:
and keeping the two-position three-way electromagnetic valve to be powered off so as to control the first capillary tube to be connected into the refrigerant flow path.
11. The method of claim 8, wherein said controlling the operation of said compressor in accordance with a preset third control strategy for the compressor comprises:
And controlling the compressor to start at the lowest frequency and controlling the compressor to operate according to the third frequency rise to the maximum frequency.
12. A method according to claim 3, characterized in that the method further comprises:
controlling the second capillary tube to be connected into the refrigerant flow path under the condition that the set storage temperature is not smaller than the preset first temperature threshold value;
and controlling the operation of the compressor according to a preset fourth control strategy of the compressor so as to enable the current storage temperature to reach the set storage temperature.
13. The method of claim 12, wherein said controlling the second capillary tube to access the refrigerant flow path comprises:
and controlling the two-position three-way electromagnetic valve to be electrified so as to control the second capillary tube to be connected into the refrigerant flow path.
14. The method of claim 12, wherein said controlling the operation of said compressor in accordance with a preset fourth control strategy of said compressor comprises:
and controlling the compressor to start at the lowest frequency, and controlling the compressor to operate according to the fourth frequency rise to the maximum frequency.
15. A temperature control device, characterized in that it is applied to refrigeration equipment, the refrigerant flow path of said refrigeration equipment is provided with a first capillary tube and a second capillary tube which are different in length in parallel, said device comprises:
The temperature acquisition module is used for acquiring the set storage temperature of the refrigeration equipment, the current storage temperature inside the refrigeration equipment and the environment temperature of the environment where the refrigeration equipment is located;
and the capillary control module is used for controlling the condition that the first capillary and the second capillary are connected into the refrigerant flow path according to the set storage temperature, the current storage temperature and the environment temperature so as to enable the current storage temperature to reach the set storage temperature.
16. The electronic equipment is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
a memory for storing a computer program;
a processor for implementing the method of any one of claims 1-14 when executing a program stored on a memory.
17. A storage medium having stored thereon a computer program, which when executed by a processor performs the method of any of claims 1-14.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117419509A (en) * | 2023-12-18 | 2024-01-19 | 珠海格力电器股份有限公司 | Temperature control method, device, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117419509A (en) * | 2023-12-18 | 2024-01-19 | 珠海格力电器股份有限公司 | Temperature control method, device, electronic equipment and storage medium |
| CN117419509B (en) * | 2023-12-18 | 2024-05-03 | 珠海格力电器股份有限公司 | Temperature control method, device, electronic equipment and storage medium |
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