CN115900152A - Refrigerant filling method and refrigerant filling device - Google Patents
Refrigerant filling method and refrigerant filling device Download PDFInfo
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- CN115900152A CN115900152A CN202211571482.7A CN202211571482A CN115900152A CN 115900152 A CN115900152 A CN 115900152A CN 202211571482 A CN202211571482 A CN 202211571482A CN 115900152 A CN115900152 A CN 115900152A
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 391
- 238000000034 method Methods 0.000 title claims abstract description 62
- 229910000831 Steel Inorganic materials 0.000 claims description 49
- 239000010959 steel Substances 0.000 claims description 49
- 238000001514 detection method Methods 0.000 claims description 13
- 229910052736 halogen Inorganic materials 0.000 claims description 11
- 150000002367 halogens Chemical class 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 4
- 238000005429 filling process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The embodiment of the invention discloses a refrigerant filling method and a refrigerant filling device. The method comprises the following steps: acquiring target filling quality of a refrigerant required by equipment to be filled; controlling the first pressure switch and the second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled, and acquiring first refrigerant quality information of the refrigerant filled into the equipment to be filled; controlling the first pressure switch and the second pressure switch to be closed according to the first refrigerant quality information and the target filling quality, and acquiring first time information of standing; adjusting the working state of a second pressure switch according to the first time information so as to fill the refrigerant to the equipment to be filled to the target filling quality; and the pressure parameter of the first pressure switch is larger than that of the second pressure switch. According to the technical scheme of the embodiment of the invention, the working states of the first pressure switch and the second pressure switch are adjusted by acquiring the target filling quality of the refrigerant and the first refrigerant quality information, so that the refrigerant filling operation process is optimized, and the refrigerant filling precision is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of refrigeration, in particular to a refrigerant filling method and a refrigerant filling device.
Background
The refrigeration system utilizes the phase change of the refrigerant to realize the energy transfer, thereby achieving the purpose of design, and the filling process of the refrigerant is very important. In the existing refrigerant filling operation process, a pipeline for filling the refrigerant is connected to a unit until the refrigerant filling is completed. When dismantling the pipeline, dismantling the pipeline under higher pressure not only can produce more refrigerant loss, and refrigerant filling volume is accurate inadequately, owing to the pressure risees among the filling process moreover, demolish the pipeline and also have great potential safety hazard.
Disclosure of Invention
The embodiment of the invention provides a refrigerant filling method and a refrigerant filling device, and aims to solve the problems that after refrigerant filling is finished, a high-pressure pipeline is dismantled to cause more refrigerant loss and potential safety hazards.
According to an aspect of the present invention, a refrigerant filling method is provided, which is applied to a refrigerant filling device, the refrigerant filling device including a first pressure switch and a second pressure switch; the refrigerant filling device is used for filling a refrigerant into equipment to be filled; the method comprises the following steps:
acquiring target filling quality of a refrigerant required by equipment to be filled;
controlling a first pressure switch and a second pressure switch to be opened so as to fill the refrigerant to the equipment to be filled, and acquiring first refrigerant quality information of the refrigerant filled into the equipment to be filled;
controlling the first pressure switch and the second pressure switch to be closed according to the first refrigerant quality information and the target filling quality, and acquiring first time information of standing;
adjusting the working state of the second pressure switch according to the first time information so as to fill the refrigerant into the equipment to be filled to the target filling quality; wherein a pressure parameter of the first pressure switch is greater than a pressure parameter of the second pressure switch.
Optionally, the controlling the first pressure switch and the second pressure switch to be turned on to fill the refrigerant into the device to be filled, and obtaining first refrigerant quality information of the refrigerant filled into the device to be filled includes:
connecting the equipment to be filled with a refrigerant steel cylinder through a pipeline, and acquiring first quality information of the refrigerant steel cylinder and a refrigerant in the refrigerant steel cylinder;
pumping the pipeline through a vacuum pump to obtain pressure intensity information in the pipeline of the refrigerant steel cylinder;
when the pressure information in the pipeline of the refrigerant steel cylinder is smaller than a preset pressure value, controlling a first pressure switch and a second pressure switch to be opened;
filling a refrigerant into the equipment to be filled through the refrigerant steel cylinder, and acquiring second quality information of the refrigerant steel cylinder and the refrigerant in the refrigerant steel cylinder in real time;
and determining first refrigerant quality information of the refrigerant filled into the equipment to be filled by making a difference between the first quality information and the second quality information.
Optionally, controlling the first pressure switch and the second pressure switch to be turned off according to the first refrigerant quality information and the target charging quality, and acquiring first time information of standing, including:
comparing the first refrigerant quality information with a first preset threshold value, and controlling the first pressure switch and the second pressure switch to be closed according to a comparison result; wherein the first preset threshold is less than the target filling quality;
after the first pressure switch and the second pressure switch are closed, the equipment to be filled is controlled to enter a standing state, and first time information of the equipment to be filled entering the standing state is obtained.
Optionally, the comparing the first refrigerant quality information with a first preset threshold, and controlling the first pressure switch and the second pressure switch to be turned off according to a comparison result, includes:
when the first refrigerant quality information is greater than or equal to the preset threshold value, controlling the first pressure switch and the second pressure switch to be closed;
wherein the first preset threshold is equal to 1/5 of the target filling quality.
Optionally, controlling the first pressure switch and the second pressure switch to be turned off according to the first refrigerant quality information and the target charging quality, and acquiring first time information of standing, including:
calculating pressure information in a cavity of the equipment to be filled according to the first refrigerant quality information and the target filling quality;
and comparing the pressure information in the cavity of the equipment to be filled with a preset pressure threshold value, and controlling the second pressure switch and the second pressure switch to be closed according to a comparison result.
Optionally, adjusting the working state of the second pressure switch according to the first time information to fill the refrigerant into the device to be filled to the target filling quality includes:
comparing the first time information with preset time information, and controlling the second pressure switch to be opened according to a comparison result;
acquiring second refrigerant quality information of the refrigerant filled into the equipment to be filled;
comparing second refrigerant quality information of the refrigerant filled into the equipment to be filled with the target filling quality to generate a comparison result;
and adjusting the working state of the second pressure switch according to the comparison result.
Optionally, before the comparing the second refrigerant quality information according to the refrigerant filled into the device to be filled with the target filling quality and generating a comparison result, the method further includes:
comparing second refrigerant quality information of the refrigerant filled into the equipment to be filled with a second preset threshold value, and controlling the second pressure switch to reduce the flow according to the comparison result;
the second preset threshold is larger than the first preset threshold, and the second preset threshold is smaller than the target filling quality.
Optionally, adjusting the working state of the second pressure switch according to the comparison result includes:
when second refrigerant quality information of the refrigerant filled into the equipment to be filled is equal to the target filling quality, controlling a compressor of the equipment to be filled to be started;
controlling the closing of the second pressure switch when the pressure of the second pressure switch is less than the pressure threshold.
Optionally, after controlling the working state of the second pressure switch according to the first time information to fill the refrigerant to the to-be-filled device to the target filling quality, the method further includes:
detecting the equipment to be filled through a halogen leak detector to generate detection data;
and determining the safety state of the equipment to be filled according to the detection data.
In a second aspect, an embodiment of the present invention provides a refrigerant filling apparatus, including:
the first detection module is used for acquiring the target filling quality of a refrigerant required by equipment to be filled;
the control module is used for controlling the first pressure switch and the second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled and obtain first refrigerant quality information of the refrigerant filled into the equipment to be filled;
the control module is further configured to control the first pressure switch and the second pressure switch to be turned off according to the first refrigerant quality information and the target charging quality, and acquire first time information of standing;
the adjusting module is used for adjusting the working state of the second pressure switch according to the first time information so as to fill the refrigerant into the equipment to be filled to the target filling quality; wherein a pressure parameter of the first pressure switch is greater than a pressure parameter of the second pressure switch.
According to the refrigerant filling method provided by the embodiment of the invention, the first pressure switch and the second pressure switch are controlled to be opened to fill the refrigerant into the equipment to be filled, the first pressure switch and the second pressure switch are controlled to be closed according to the acquired first refrigerant quality information of the refrigerant and the target filling quality of the refrigerant, the standing first time information is acquired, and the working state of the second pressure switch is adjusted according to the first time information. Because the pressure parameter of the first pressure switch is greater than that of the second pressure switch, the first pressure switch is closed in advance and the second pressure switch is adjusted, so that the operation can be carried out only by detaching the low-pressure pipeline after the refrigerant filling is finished. The refrigerant filling method provided by the embodiment of the invention realizes the optimization of the refrigerant filling operation process and improves the refrigerant filling precision and safety.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a flow chart of a refrigerant charging method according to an embodiment of the present invention;
fig. 2 is a flow chart of another refrigerant charging method according to an embodiment of the present invention;
fig. 3 is a flowchart of another refrigerant filling method according to an embodiment of the present invention;
fig. 4 is a flowchart of another refrigerant filling method according to an embodiment of the present invention;
fig. 5 is a flowchart of another refrigerant filling method according to an embodiment of the present invention;
fig. 6 is a flowchart of another refrigerant filling method according to an embodiment of the present invention;
fig. 7 is a flowchart of another refrigerant filling method according to an embodiment of the present invention;
fig. 8 is a flowchart of another refrigerant filling method according to an embodiment of the present invention;
fig. 9 is a flowchart of another refrigerant filling method according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a refrigerant filling device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a flow chart of a refrigerant filling method according to an embodiment of the present invention. Referring to fig. 1, the refrigerant filling method provided by the embodiment of the invention is applied to a refrigerant filling device, and the refrigerant filling device includes a first pressure switch and a second pressure switch; the refrigerant filling device is used for filling a refrigerant into equipment to be filled; the method comprises the following steps:
s101, obtaining target filling quality of a refrigerant required by equipment to be filled.
Specifically, firstly, the refrigerant filling amount required by the equipment to be filled is confirmed, that is, the target filling quality of the refrigerant is obtained. And the operation is ready, such as wearing protective equipment and preparing tools such as an electronic scale.
And S102, controlling a first pressure switch and a second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled, and acquiring first refrigerant quality information of the refrigerant filled into the equipment to be filled.
Specifically, when the filling is started, no refrigerant exists in the equipment to be filled or the refrigerant is consumed, at the moment, the first pressure switch and the second pressure switch are turned on to be used for filling the refrigerant, the quality of the refrigerant filled into the equipment to be filled is measured in real time, and the measured quality is recorded as first refrigerant quality information.
S103, controlling the first pressure switch and the second pressure switch to be closed according to the first refrigerant quality information and the target filling quality, and acquiring first time information of standing.
Specifically, when the first refrigerant quality reaches a certain proportion of the target filling quality, the first pressure switch and the second pressure switch are closed, and the equipment to be filled is subjected to standing treatment to balance the pressure inside the equipment to be filled. And standing the equipment to be filled, timing standing time, and acquiring first standing time information.
And S104, adjusting the working state of the second pressure switch according to the first time information so as to fill the refrigerant into the equipment to be filled to the target filling quality.
Wherein a pressure parameter of the first pressure switch is greater than a pressure parameter of the second pressure switch.
Specifically, the pressure parameter of the first pressure switch is greater than the pressure parameter of the second pressure switch, and for example, the first pressure switch may be set to be a high-pressure switch, and the second pressure switch may be set to be a low-pressure switch. The operating state of the second pressure switch includes the opening or closing of the second pressure switch. And controlling the second pressure switch to be opened according to the first time information, and continuously filling the refrigerant into the equipment to be filled to the target filling quality. And after the target filling quality is reached, closing the second pressure switch. After the first refrigerant quality reaches a certain proportion of the target filling quality, the first pressure switch with the larger pressure parameter is closed, and only the second pressure switch with the smaller pressure parameter is used for filling the refrigerant to the equipment to be filled to the target filling quality.
Because the volume of the cavity of the equipment to be filled is constant, along with the increase of the mass of the refrigerant filled into the equipment to be filled, the volume occupied by the liquid in the cavity of the equipment to be filled is gradually increased, and the volume of the gas in the cavity of the equipment to be filled is gradually reduced, so that the pressure in the cavity of the equipment to be filled is gradually increased. Under the condition of higher pressure, the refrigerant is filled into the equipment to be filled through the second pressure switch with smaller pressure parameter to the target filling quality, so that the refrigerant can be safely filled into the cavity of the equipment to be filled, and the safety of the equipment to be filled is improved.
In the refrigerant filling method provided by this embodiment, the target filling quality of the refrigerant required by the device to be filled is obtained, and the first pressure switch and the second pressure switch are opened to fill the refrigerant into the device to be filled. The method comprises the steps of obtaining first refrigerant quality information of a refrigerant filled into equipment to be filled, and when the first refrigerant quality reaches a certain proportion of target filling quality, closing a first pressure switch and a second pressure switch and obtaining first standing time information. And opening the second pressure switch according to the first time information, adjusting the working state of the second pressure switch, and filling the refrigerant to the equipment to be filled to the marked filling quality. The arrangement enables the cavity of the equipment to be filled to be quickly filled with the refrigerant when the internal pressure is low, and the refrigerant can be safely filled after the pressure is increased. The refrigerant filling operation process is optimized, and the refrigerant filling precision and safety are improved.
Optionally, fig. 2 is a flowchart of another refrigerant filling method according to an embodiment of the present invention. On the basis of the foregoing embodiment, referring to fig. 2, the refrigerant filling method provided in this embodiment includes:
s101, obtaining target filling quality of a refrigerant required by equipment to be filled.
S201, connecting the equipment to be filled with the refrigerant steel cylinder through a pipeline, and acquiring first quality information of the refrigerant steel cylinder and the refrigerant in the refrigerant steel cylinder.
Specifically, the first quality information is the quality of the refrigerant cylinder and the refrigerant therein before the refrigerant cylinder starts to be filled with the refrigerant. The method comprises the steps that a refrigerant is stored in a steel cylinder, the refrigerant steel cylinder is connected with equipment to be filled through a pipeline, first quality information of the refrigerant in the refrigerant steel cylinder and the refrigerant in the refrigerant steel cylinder is obtained before the refrigerant is filled, and the first quality information is used for confirming the quality of the refrigerant input into the equipment to be filled.
S202, pumping air to the pipeline through a vacuum pump to obtain pressure information in the pipeline of the refrigerant steel cylinder.
Specifically, because the interior of the device to be filled has a certain pressure, air in the pipeline needs to be pumped out, so that gas in the pipeline is prevented from being input into the device to be filled, gas impurities are mixed in the device to be filled or the influence of the internal pressure on the refrigerant filling efficiency is increased, and the pressure information in the pipeline of the refrigerant steel cylinder is obtained after the air in the pipeline is pumped out.
And S203, when the pressure information in the pipeline of the refrigerant steel cylinder is smaller than a preset pressure value, controlling a first pressure switch and a second pressure switch to be opened.
Specifically, when the pressure information in the pipeline of the refrigerant steel cylinder is smaller than a preset pressure value, the pipeline can be considered to be in an approximately vacuum state, the refrigerant can be filled, and at the moment, the first pressure switch and the second pressure switch are opened to fill the refrigerant into the equipment to be filled.
S204, refrigerant is filled into the equipment to be filled through the refrigerant steel cylinder, and second quality information of the refrigerant steel cylinder and the refrigerant in the refrigerant steel cylinder is obtained in real time.
Specifically, in the process of filling the refrigerant into the equipment to be filled by the refrigerant steel cylinder, the refrigerant steel cylinder can be placed on the electronic scale, so that the second quality information of the refrigerant in the refrigerant steel cylinder and the refrigerant steel cylinder can be acquired in real time.
S205, making a difference between the first quality information and the second quality information, and determining first refrigerant quality information of the refrigerant filled into the equipment to be filled.
Specifically, the quality of the refrigerant steel cylinder can be determined through the refrigerant steel cylinder and first quality information of the refrigerant in the refrigerant steel cylinder. The total mass of the refrigerant in the refrigerant steel cylinder and the refrigerant steel cylinder can be determined through the second mass information of the refrigerant in the refrigerant steel cylinder and the refrigerant steel cylinder. And obtaining the quality of the refrigerant in the filling equipment by subtracting the first quality information from the second quality information.
S103, controlling the first pressure switch and the second pressure switch to be closed according to the first refrigerant quality information and the target filling quality, and acquiring first time information of standing.
And S104, adjusting the working state of the second pressure switch according to the first time information so as to fill the refrigerant into the equipment to be filled to the target filling quality.
Optionally, fig. 3 is a flowchart of another refrigerant filling method according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 3, the refrigerant filling method includes:
s101, obtaining target filling quality of a refrigerant required by equipment to be filled.
And S102, controlling a first pressure switch and a second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled, and acquiring first refrigerant quality information of the refrigerant filled into the equipment to be filled.
S301, comparing the first refrigerant quality information with a first preset threshold value, and controlling the first pressure switch and the second pressure switch to be closed according to a comparison result.
Wherein the first preset threshold is less than the target filling quality.
Specifically, the first preset threshold is a value at which the pressure inside the device to be filled is balanced with the external pressure, and when the first refrigerant quality information reaches the first preset threshold, the first pressure switch and the second pressure switch are turned off. For example, the first preset threshold may be 15%, 20%, 25%, or the like of the target filling quality.
S302, after the first pressure switch and the second pressure switch are closed, the equipment to be filled is controlled to enter a standing state, and first time information of the equipment to be filled entering the standing state is obtained.
Specifically, after the first pressure switch and the second pressure switch are turned off, the refrigerant is stopped from being injected into the equipment to be filled, and the equipment to be filled enters a standing state in which the internal pressure is balanced. First time information of the device to be filled entering a standing state is obtained, and the standing time can be 30S, 60S, 90S or the like.
And S104, adjusting the working state of the second pressure switch according to the first time information so as to fill the refrigerant into the equipment to be filled to the target filling quality.
Optionally, fig. 4 is a flowchart of another refrigerant filling method according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 4, the refrigerant filling method includes:
s101, obtaining target filling quality of a refrigerant required by equipment to be filled.
And S102, controlling a first pressure switch and a second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled, and acquiring first refrigerant quality information of the refrigerant filled into the equipment to be filled.
S401, when the first refrigerant quality information is larger than or equal to the preset threshold value, controlling the first pressure switch and the second pressure switch to be closed.
Wherein the first preset threshold is equal to 1/5 of the target filling quality.
Specifically, when filling is started, the pressure in the cavity of the equipment to be filled is low, the first pressure switch and the second pressure switch are simultaneously opened, the filling efficiency is high, when the first refrigerant quality information is greater than or equal to 1/5 of the target filling quality, the pressure in the cavity of the equipment to be filled is increased to a higher level, the first pressure switch and the second pressure switch need to be temporarily closed, and the equipment to be filled is enabled to enter a standing state for balancing the internal pressure.
S302, after the first pressure switch and the second pressure switch are closed, the equipment to be filled is controlled to enter a standing state, and first time information of the equipment to be filled entering the standing state is obtained.
And S104, adjusting the working state of the second pressure switch according to the first time information so as to fill the refrigerant into the equipment to be filled to the target filling quality.
Optionally, fig. 5 is a flowchart of another refrigerant filling method according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 5, the refrigerant filling method includes:
s101, obtaining target filling quality of a refrigerant required by equipment to be filled.
And S102, controlling a first pressure switch and a second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled, and acquiring first refrigerant quality information of the refrigerant filled into the equipment to be filled.
S501, calculating pressure information in a cavity of the equipment to be filled according to the first refrigerant quality information and the target filling quality.
Specifically, the pressure in the cavity of the device to be filled before the refrigerant is filled is at a lower level, so that the initial pressure of the device to be filled can be obtained, and the pressure information in the cavity of the device to be filled can be calculated according to the first refrigerant quality information and the target filling quality.
S502, comparing the pressure information in the cavity of the device to be filled with a preset pressure threshold, and controlling the first pressure switch and the second pressure switch to be closed according to the comparison result.
Specifically, the pressure level in the cavity of the device to be filled can be directly determined by comparing the pressure information in the cavity of the device to be filled with a preset pressure threshold, wherein the preset pressure threshold is a value of balance between the pressure in the device to be filled and the external pressure, when the first refrigerant quality information reaches the preset pressure threshold, the pressure in the cavity of the device to be filled is increased to a higher level, and the first pressure switch and the second pressure switch are closed to enable the device to be filled to enter a standing state of balancing the internal pressure.
And S104, adjusting the working state of the second pressure switch according to the first time information so as to fill the refrigerant into the equipment to be filled to the target filling quality.
Optionally, fig. 6 is a flowchart of another refrigerant filling method according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 6, the refrigerant filling method includes:
s101, obtaining target filling quality of a refrigerant required by equipment to be filled.
And S102, controlling a first pressure switch and a second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled, and acquiring first refrigerant quality information of the refrigerant filled into the equipment to be filled.
S103, controlling the first pressure switch and the second pressure switch to be closed according to the first refrigerant quality information and the target filling quality, and acquiring first time information of standing.
S601, comparing the first time information with preset time information, and controlling the second pressure switch to be turned on according to a comparison result.
Specifically, the standing can enable the pressure inside the cavity of the equipment to be filled to be uniform, the filling process and the safety of the equipment to be filled are improved, the equipment to be filled can continue to be filled with the refrigerant after standing for a period of time, and when the first time information is greater than or equal to the preset time information, the second pressure switch can be opened to continue to be filled with the refrigerant. At the moment, the pressure in the cavity of the equipment to be filled is at a higher level, and the safety of the filling process can be improved by only using the second pressure switch for filling.
And S602, acquiring second refrigerant quality information of the refrigerant filled into the equipment to be filled.
Specifically, the second refrigerant quality information is the quality of the refrigerant which has been filled into the device to be filled after the second pressure switch is turned on. The obtained second refrigerant quality information may be used to adjust the second pressure switch.
S603, comparing the second refrigerant quality information of the refrigerant filled into the equipment to be filled with the target filling quality to generate a comparison result.
Specifically, the quality of the refrigerant to be filled in the device to be filled reaches a first preset threshold. The numerical values of the refrigerant and the refrigerant are gradually close to each other along with the charging of the refrigerant.
And S604, adjusting the working state of the second pressure switch according to the comparison result.
Specifically, along with the filling of the refrigerant, the numerical value of the second refrigerant quality information is increased, and when the numerical value of the second refrigerant quality information is close to the target filling quality, the opening degree of the second pressure switch is gradually reduced to slow down the refrigerant filling speed until the filling is completed. Illustratively, when the numerical value of the second refrigerant quality information reaches 90% of the target filling quality, the opening degree of the second pressure switch is controlled to be 50% of the maximum opening degree.
Optionally, fig. 7 is a flowchart of another refrigerant filling method according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 7, the refrigerant filling method includes:
s101, obtaining target filling quality of a refrigerant required by equipment to be filled.
And S102, controlling a first pressure switch and a second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled, and acquiring first refrigerant quality information of the refrigerant filled into the equipment to be filled.
S103, controlling the first pressure switch and the second pressure switch to be closed according to the first refrigerant quality information and the target filling quality, and acquiring first time information of standing.
S601, comparing the first time information with preset time information, and controlling the second pressure switch to be turned on according to a comparison result.
And S602, acquiring second refrigerant quality information of the refrigerant filled into the equipment to be filled.
S701, comparing second refrigerant quality information of the refrigerant filled into the equipment to be filled with a second preset threshold value, and controlling the second pressure switch to reduce the flow according to the comparison result.
The second preset threshold is larger than the first preset threshold, and the second preset threshold is smaller than the target filling quality.
Specifically, when the second refrigerant quality information is smaller than a second preset threshold, the opening of the second pressure switch of the equipment to be filled is the largest, and when the second refrigerant quality information is larger than or equal to the second preset threshold, the equipment to be filled is close to the completion of filling, and at this time, the second pressure switch is controlled to reduce the flow. And the second preset threshold is greater than the first preset threshold and is smaller than the target filling quality. For example, the second preset threshold may be 90% of the target filling quality.
S603, comparing the second refrigerant quality information of the refrigerant filled into the equipment to be filled with the target filling quality to generate a comparison result.
And S604, adjusting the working state of the second pressure switch according to the comparison result.
Optionally, fig. 8 is a flowchart of another refrigerant filling method according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 8, the refrigerant filling method includes:
s101, obtaining target filling quality of a refrigerant required by equipment to be filled.
And S102, controlling a first pressure switch and a second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled, and acquiring first refrigerant quality information of the refrigerant filled into the equipment to be filled.
S103, controlling the first pressure switch and the second pressure switch to be closed according to the first refrigerant quality information and the target filling quality, and acquiring first time information of standing.
S601, comparing the first time information with preset time information, and controlling the second pressure switch to be turned on according to a comparison result.
And S602, acquiring second refrigerant quality information of the refrigerant filled into the equipment to be filled.
S603, comparing the second refrigerant quality information of the refrigerant filled into the equipment to be filled with the target filling quality to generate a comparison result.
And S801, controlling a compressor of the equipment to be filled to be started when second refrigerant quality information of the refrigerant filled into the equipment to be filled is equal to the target filling quality.
Specifically, when the second refrigerant quality information of the refrigerant in the device to be filled is equal to the target filling quality, it indicates that filling is completed, and at this time, the compressor of the device to be filled is started, so that the amount of refrigerant splashing when the pipeline is pulled out can be reduced, and the precision and the safety are further improved.
And S802, controlling the second pressure switch to be closed when the pressure of the second pressure switch is smaller than a pressure threshold value.
Specifically, when the pressure of the second pressure switch is less than the pressure threshold, indicating that the filling is completed, the second pressure switch may be closed and the line may be removed.
Optionally, fig. 9 is a flowchart of another refrigerant filling method according to an embodiment of the present invention. On the basis of the above embodiment, referring to fig. 9, the refrigerant filling method includes:
s101, obtaining target filling quality of a refrigerant required by equipment to be filled.
And S102, controlling a first pressure switch and a second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled, and acquiring first refrigerant quality information of the refrigerant filled into the equipment to be filled.
S103, controlling the first pressure switch and the second pressure switch to be closed according to the first refrigerant quality information and the target filling quality, and acquiring first time information of standing.
And S104, adjusting the working state of the second pressure switch according to the first time information so as to fill the refrigerant into the equipment to be filled to the target filling quality.
And S901, detecting the equipment to be filled by a halogen leak detector to generate detection data.
Specifically, after the device to be filled is filled, a halogen leak detector is required to detect the device to be filled and generate detection data, and the halogen leak detector is used for detecting whether halogen elements leak or not. This arrangement prevents leakage of halogen, further improving the safety of the device to be filled.
And S902, determining the safety state of the equipment to be filled according to the detection data.
Specifically, if the halogen leak detector detects leakage, the device to be filled needs to be cleaned, and if the halogen leak detector does not detect leakage, the device to be filled can be normally used.
Optionally, fig. 10 is a schematic structural diagram of a refrigerant filling device according to an embodiment of the present invention. On the basis of the above embodiments, referring to fig. 10, the refrigerant filling device 100 includes:
the first detection module 11 is used for acquiring target filling quality of a refrigerant required by equipment to be filled;
the control module 12 is configured to control the first pressure switch and the second pressure switch to be turned on, so as to fill the to-be-filled device with the refrigerant, and obtain first refrigerant quality information of the refrigerant filled into the to-be-filled device;
the control module 12 is further configured to control the first pressure switch and the second pressure switch to be turned off according to the first refrigerant quality information and the target charging quality, and obtain first time information of standing;
the adjusting module 13 is configured to adjust a working state of the second pressure switch according to the first time information, so as to fill the refrigerant to the to-be-filled device to the target filling quality; wherein a pressure parameter of the first pressure switch is greater than a pressure parameter of the second pressure switch.
Optionally, the control module 12 is specifically configured to connect the to-be-filled device and the refrigerant steel cylinder through a pipeline, and acquire the refrigerant steel cylinder and first quality information of the refrigerant in the refrigerant steel cylinder. And pumping the pipeline through a vacuum pump to obtain the pressure information in the pipeline of the refrigerant steel cylinder. And when the pressure information in the pipeline of the refrigerant steel cylinder is smaller than a preset pressure value, controlling a first pressure switch and a second pressure switch to be turned on. And filling a refrigerant into the equipment to be filled through the refrigerant steel cylinder, and acquiring second quality information of the refrigerant steel cylinder and the refrigerant in the refrigerant steel cylinder in real time. And determining first refrigerant quality information of the refrigerant filled into the equipment to be filled by taking the difference between the first quality information and the second quality information.
Optionally, the control module 12 is further configured to compare the first refrigerant quality information with a first preset threshold, and control the first pressure switch and the second pressure switch to be turned off according to a comparison result. After the first pressure switch and the second pressure switch are closed, the equipment to be filled is controlled to enter a standing state, and first time information of the equipment to be filled entering the standing state is obtained.
Optionally, the control module 12 is further configured to control the first pressure switch and the second pressure switch to be turned off when the first refrigerant quality information is greater than or equal to the preset threshold.
Optionally, the control module 12 is further configured to calculate pressure information in the cavity of the device to be filled according to the first refrigerant quality information and the target filling quality. And comparing the pressure information in the cavity of the equipment to be filled with a preset pressure threshold value, and controlling the second pressure switch to be closed according to a comparison result.
Optionally, the adjusting module 13 is specifically configured to compare the first time information with preset time information, and control the second pressure switch to be turned on according to a comparison result. And acquiring second refrigerant quality information of the refrigerant filled into the equipment to be filled. And comparing the second refrigerant quality information of the refrigerant filled into the equipment to be filled with the target filling quality to generate a comparison result. And adjusting the working state of the second pressure switch according to the comparison result.
Optionally, the adjusting module 13 is further configured to compare second refrigerant quality information of the refrigerant filled into the device to be filled with a second preset threshold, and control the first pressure switch to reduce the flow rate according to a comparison result.
The refrigerant filling device provided by the embodiment of the invention comprises a first detection module, a control module and an adjusting module. The method comprises the steps that a first detection module obtains target filling quality of a refrigerant needed by equipment to be filled, a control module controls a first pressure switch and a second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled, first refrigerant quality information of the refrigerant obtained by the control module controls the first pressure switch and the second pressure switch to be closed when the first refrigerant quality information is larger than or equal to 1/5 of the target filling quality, first time information of standing is obtained, and the equipment to be filled enters a standing state of balancing internal pressure at the moment. The adjusting module compares the first time information with preset time information, and when the first time information is larger than or equal to the preset time information, the second pressure switch is turned on to continue to fill the refrigerant. At the moment, the adjusting module obtains second refrigerant quality information of the refrigerant in the equipment to be filled, compares the second refrigerant quality information of the refrigerant filled into the equipment to be filled with the second preset threshold value, and controls the second pressure switch to reduce the flow when the second refrigerant quality information is larger than or equal to the second preset threshold value. And then comparing the second refrigerant quality information with the target filling quality, and closing the second pressure switch when the second refrigerant quality information is equal to the target filling quality. And at the moment, a compressor of the equipment to be filled is started to reduce the amount of refrigerant splashing when the pipeline is pulled out, the equipment to be filled is detected by the halogen leak detector to generate detection data, and if the halogen leak detector does not detect leakage, the equipment to be filled can be normally used. The refrigerant filling method provided by the embodiment of the invention realizes the optimization of the refrigerant filling operation process, eliminates the hidden leakage danger and improves the refrigerant filling precision and safety.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements and substitutions will now be apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. The refrigerant filling method is characterized by being applied to a refrigerant filling device, wherein the refrigerant filling device comprises a first pressure switch and a second pressure switch; the refrigerant filling device is used for filling a refrigerant into equipment to be filled; the method comprises the following steps:
acquiring target filling quality of a refrigerant required by equipment to be filled;
controlling a first pressure switch and a second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled, and acquiring first refrigerant quality information of the refrigerant filled into the equipment to be filled;
controlling the first pressure switch and the second pressure switch to be closed according to the first refrigerant quality information and the target filling quality, and acquiring first time information of standing;
adjusting the working state of the second pressure switch according to the first time information so as to fill the refrigerant into the equipment to be filled to the target filling quality; wherein a pressure parameter of the first pressure switch is greater than a pressure parameter of the second pressure switch.
2. The refrigerant filling method according to claim 1, wherein the controlling of the first pressure switch and the second pressure switch to be opened to fill the refrigerant into the device to be filled and to obtain first refrigerant quality information of the refrigerant filled into the device to be filled comprises:
connecting the equipment to be filled with a refrigerant steel cylinder through a pipeline, and acquiring first quality information of the refrigerant steel cylinder and a refrigerant in the refrigerant steel cylinder;
pumping the pipeline through a vacuum pump to obtain pressure intensity information in the pipeline of the refrigerant steel cylinder;
when the pressure information in the pipeline of the refrigerant steel cylinder is smaller than a preset pressure value, controlling a first pressure switch and a second pressure switch to be opened;
filling a refrigerant into the equipment to be filled through the refrigerant steel cylinder, and acquiring second quality information of the refrigerant steel cylinder and the refrigerant in the refrigerant steel cylinder in real time;
and determining first refrigerant quality information of the refrigerant filled into the equipment to be filled by taking the difference between the first quality information and the second quality information.
3. The refrigerant filling method according to claim 1, wherein the controlling the first pressure switch and the second pressure switch to be turned off and obtaining first time information of standing according to the first refrigerant quality information and the target filling quality comprises:
comparing the first refrigerant quality information with a first preset threshold value, and controlling the first pressure switch and the second pressure switch to be closed according to a comparison result; wherein the first preset threshold is less than the target filling quality;
after the first pressure switch and the second pressure switch are closed, the equipment to be filled is controlled to enter a standing state, and first time information of the equipment to be filled entering the standing state is obtained.
4. The refrigerant filling method according to claim 3, wherein the comparing the first refrigerant quality information with a first preset threshold and controlling the first pressure switch and the second pressure switch to be turned off according to a comparison result comprises:
when the first refrigerant quality information is larger than or equal to the preset threshold, controlling the first pressure switch and the second pressure switch to be closed;
wherein the first preset threshold is equal to 1/5 of the target filling quality.
5. The refrigerant charging method according to claim 1, wherein the controlling the first pressure switch and the second pressure switch to be turned off and obtaining first time information of standing according to the first refrigerant quality information and the target charging quality comprises:
calculating pressure information in a cavity of the equipment to be filled according to the first refrigerant quality information and the target filling quality;
and comparing the pressure information in the cavity of the equipment to be filled with a preset pressure threshold value, and controlling the first pressure switch and the second pressure switch to be closed according to the comparison result.
6. The refrigerant charging method according to claim 3, wherein the adjusting the operating state of the second pressure switch according to the first time information to charge the refrigerant to the to-be-charged device to the target charging quality includes:
comparing the first time information with preset time information, and controlling the second pressure switch to be opened according to a comparison result;
acquiring second refrigerant quality information of the refrigerant filled into the equipment to be filled;
comparing second refrigerant quality information of the refrigerant filled into the equipment to be filled with the target filling quality to generate a comparison result;
and adjusting the working state of the second pressure switch according to the comparison result.
7. The refrigerant filling method according to claim 6, further comprising, before the comparing the second refrigerant quality information according to the refrigerant filled into the device to be filled with the target filling quality and generating the comparison result:
comparing second refrigerant quality information of the refrigerant filled into the equipment to be filled with a second preset threshold value, and controlling the second pressure switch to reduce the flow according to a comparison result;
the second preset threshold is larger than the first preset threshold, and the second preset threshold is smaller than the target filling quality.
8. The refrigerant charging method as claimed in claim 6, wherein the adjusting the operating state of the second pressure switch according to the comparison result comprises:
when second refrigerant quality information of the refrigerant filled into the equipment to be filled is equal to the target filling quality, controlling a compressor of the equipment to be filled to be started;
controlling the closing of the second pressure switch when the pressure of the second pressure switch is less than the pressure threshold.
9. The refrigerant charging method according to claim 1, wherein after controlling the operating state of the second pressure switch according to the first time information to charge the refrigerant to the device to be charged to the target charging quality, the method further comprises:
detecting the equipment to be filled by a halogen leak detector to generate detection data;
and determining the safety state of the equipment to be filled according to the detection data.
10. A refrigerant filling device, comprising:
the first detection module is used for acquiring the target filling quality of a refrigerant required by equipment to be filled;
the control module is used for controlling the first pressure switch and the second pressure switch to be opened so as to fill the refrigerant into the equipment to be filled and obtain first refrigerant quality information of the refrigerant filled into the equipment to be filled;
the control module is further configured to control the first pressure switch and the second pressure switch to be turned off according to the first refrigerant quality information and the target charging quality, and acquire first time information of standing;
the adjusting module is used for adjusting the working state of the second pressure switch according to the first time information so as to fill the refrigerant into the equipment to be filled to the target filling quality; wherein a pressure parameter of the first pressure switch is greater than a pressure parameter of the second pressure switch.
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| CN115900152B (en) | 2023-12-19 |
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