CN115900152B - Refrigerant filling method and refrigerant filling device - Google Patents
Refrigerant filling method and refrigerant filling device Download PDFInfo
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- CN115900152B CN115900152B CN202211571482.7A CN202211571482A CN115900152B CN 115900152 B CN115900152 B CN 115900152B CN 202211571482 A CN202211571482 A CN 202211571482A CN 115900152 B CN115900152 B CN 115900152B
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 389
- 238000000034 method Methods 0.000 title claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims description 50
- 239000010959 steel Substances 0.000 claims description 50
- 238000001514 detection method Methods 0.000 claims description 13
- 230000003068 static effect Effects 0.000 claims description 13
- 229910052736 halogen Inorganic materials 0.000 claims description 11
- 150000002367 halogens Chemical class 0.000 claims description 11
- 230000001276 controlling effect Effects 0.000 description 43
- 238000005429 filling process Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 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
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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; according to the first time information, adjusting the working state of the second pressure switch to fill the refrigerant into the equipment to be filled to the target filling quality; wherein the pressure parameter of the first pressure switch is greater than the pressure parameter of the second pressure switch. According to the technical scheme, 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 flow 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 refrigerating system realizes energy transfer by utilizing the phase change of the refrigerant, thereby achieving the design purpose, and the refrigerant filling process is of great importance. In the existing operation flow of refrigerant filling, a refrigerant filling pipeline is connected to a unit until refrigerant filling is completed. When the pipeline is dismantled, more refrigerant loss can be generated when the pipeline is dismantled under higher pressure, the refrigerant filling amount is not accurate enough, and because the pressure is increased in the filling process, the pipeline is dismantled, so that the potential safety hazard is also large.
Disclosure of Invention
The embodiment of the invention provides a refrigerant filling method and a refrigerant filling device, which are used for solving the problems that more refrigerant is lost and potential safety hazards exist when a high-pressure pipeline is removed after refrigerant filling is completed.
According to an aspect of the present invention, there is provided a refrigerant filling method, 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 refrigerant into the equipment to be filled; 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;
according to the first time information, adjusting the working state of the second pressure switch to fill the refrigerant into the equipment to be filled to the target filling quality; wherein the pressure parameter of the first pressure switch is greater than the pressure parameter of the second pressure switch.
Optionally, controlling the first pressure switch and the second pressure switch to be turned on to fill the refrigerant into the to-be-filled device, and obtaining first refrigerant quality information of the refrigerant filled into the to-be-filled device, including:
connecting the device 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;
extracting air from the pipeline through a vacuum pump to obtain pressure 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, a first pressure switch and a second pressure switch are controlled to be turned on;
filling the 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 the first quality information and the second quality information are subjected to difference, and the first refrigerant quality information of the refrigerant filled into the equipment to be filled is determined.
Optionally, according to the first refrigerant quality information and the target filling quality, the first pressure switch and the second pressure switch are controlled to be turned off, and first time information of standing is obtained, 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, controlling the equipment to be filled to enter a static state, and acquiring first time information of the equipment to be filled entering the static state.
Optionally, comparing the first refrigerant quality information with a first preset threshold, and controlling the first pressure switch and the second pressure switch to be closed according to a comparison result, including:
when the first refrigerant quality information is greater than or equal to the preset threshold value, the first pressure switch and the second pressure switch are controlled to be closed;
wherein the first preset threshold is equal to 1/5 of the target filling quality.
Optionally, according to the first refrigerant quality information and the target filling quality, the first pressure switch and the second pressure switch are controlled to be turned off, and first time information of standing is obtained, 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, according to the first time information, adjusting the working state of the second pressure switch to fill the refrigerant into the device to be filled to the target filling quality, including:
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 the second refrigerant quality information of the refrigerant filled into the to-be-filled device 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 comparing the second refrigerant quality information according to the refrigerant filled into the to-be-filled device with the target filling quality, generating a comparison result, the method further includes:
comparing the second refrigerant quality information of the refrigerant filled into the to-be-filled device 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 the 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;
and when the pressure of the second pressure switch is smaller than the pressure threshold value, controlling the second pressure switch to be closed.
Optionally, after controlling 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, 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 device, including:
the first detection module is used for acquiring target filling quality of the refrigerant required by the 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 used for 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 obtaining 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 the pressure parameter of the first pressure switch is greater than the 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 turned on to fill the refrigerant into the equipment to be filled, the first pressure switch and the second pressure switch are controlled to be turned off according to the acquired first refrigerant quality information of the refrigerant and the target filling quality of the refrigerant, the first time information of standing is acquired, and the working state of the second pressure switch is regulated according to the first time information. Because the pressure parameter of the first pressure switch is larger than that of the second pressure switch, the first pressure switch is closed in advance, and the second pressure switch is regulated, so that the operation can only need to dismantle 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 flow, and improves the refrigerant filling precision and safety.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a flow chart of a refrigerant filling method according to an embodiment of the present invention;
FIG. 2 is a flow chart of another refrigerant filling method according to an embodiment of the present invention;
FIG. 3 is a flow chart of another method for filling refrigerant according to an embodiment of the present invention;
FIG. 4 is a flow chart of another refrigerant filling method according to an embodiment of the present invention;
FIG. 5 is a flow chart of another method for filling refrigerant according to an embodiment of the present invention;
FIG. 6 is a flow chart of another method for filling refrigerant according to an embodiment of the present invention;
FIG. 7 is a flow chart of another method for filling refrigerant according to an embodiment of the present invention;
FIG. 8 is a flow chart of another method for filling refrigerant according to an embodiment of the present invention;
FIG. 9 is a flow chart of another method for filling refrigerant 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 invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
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, wherein the refrigerant filling device comprises a first pressure switch and a second pressure switch; the refrigerant filling device is used for filling refrigerant into the equipment to be filled; the method comprises the following steps:
s101, acquiring 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, namely the target filling quality of the refrigerant. And ready for operation, such as wearing protective equipment, ready for tools such as electronic scales.
S102, 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.
Specifically, when filling is started, no refrigerant or the refrigerant is consumed in the equipment to be filled, at the moment, the first pressure switch and the second pressure switch are opened for filling the refrigerant, the quality of the refrigerant filled into the equipment to be filled is measured in real time, and the quality information of the refrigerant is recorded as first refrigerant quality information.
And 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 mass reaches a certain proportion of the target filling mass, the first pressure switch and the second pressure switch are closed, and the equipment to be filled is subjected to standing treatment so as to balance the pressure inside the equipment to be filled. And standing the equipment to be filled, timing the standing time, 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.
Wherein the pressure parameter of the first pressure switch is greater than the pressure parameter of the second pressure switch.
In particular, 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 opening or closing of the second pressure switch. And according to the first time information, controlling the second pressure switch to be turned on, and continuously filling the refrigerant into the equipment to be filled until the target filling quality is reached. And after the target filling quality is reached, controlling the closing of the second pressure switch. After the first refrigerant mass reaches a certain proportion of the target filling mass, the first pressure switch with larger pressure parameter is closed, and the second pressure switch with smaller pressure parameter is only used for filling the refrigerant into the equipment to be filled to the target filling mass.
Because the volume of the cavity of the device to be filled is constant, as the mass of the refrigerant filled into the device to be filled increases, the volume occupied by the liquid in the cavity of the device to be filled gradually increases, and the volume of the gas in the cavity of the device to be filled gradually decreases, so that the pressure in the cavity of the device to be filled gradually increases. Under larger pressure, the refrigerant is filled into the equipment to be filled to the target filling quality through the second pressure switch with smaller pressure parameters, 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.
According to the refrigerant filling method provided by the embodiment, the refrigerant is filled into the equipment to be filled by acquiring the target filling quality of the refrigerant required by the equipment to be filled and opening the first pressure switch and the second pressure switch. Acquiring first refrigerant quality information of refrigerant filled into equipment to be filled, closing a first pressure switch and a second pressure switch when the first refrigerant quality reaches a certain proportion of target filling quality, and acquiring first time information of standing. And according to the first time information, the second pressure switch is turned on, the working state of the second pressure switch is regulated, and the refrigerant is filled into the equipment to be filled until the marked filling quality is reached. The arrangement enables the cavity of the equipment to be filled with the refrigerant rapidly when the internal pressure is low, and the refrigerant can be filled safely after the pressure is increased. The refrigerant filling operation flow 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 above embodiment, referring to fig. 2, the refrigerant filling method provided in this embodiment includes:
s101, acquiring target filling quality of a refrigerant required by equipment to be filled.
And S201, connecting the device 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 steel cylinder and the refrigerant therein before starting to fill the refrigerant. The refrigerant is stored in the steel cylinder, the refrigerant steel cylinder is connected with the equipment to be filled through a pipeline, and first quality information of the refrigerant in the refrigerant steel cylinder and the refrigerant steel cylinder is firstly acquired before refrigerant filling, and is used for confirming the quality of the refrigerant input into the equipment to be filled.
S202, exhausting the pipeline through a vacuum pump to obtain pressure information in the pipeline of the refrigerant steel cylinder.
Specifically, because the inside of the equipment to be filled has a certain pressure, air in the pipeline needs to be pumped out, so that the gas in the pipeline is prevented from being input into the equipment to be filled, the gas impurities are mixed in the equipment to be filled or the efficiency of filling the refrigerant is influenced by the increased internal pressure, and the pressure information in the pipeline of the refrigerant steel cylinder is acquired 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 the first pressure switch and the second pressure switch to be opened.
Specifically, when the pressure information in the pipeline of the refrigerant steel cylinder is smaller than the preset pressure value, the pipeline can be considered to be in an approximate vacuum state, the refrigerant can be started to be filled, and at the moment, the first pressure switch and the second pressure switch are turned on to fill the refrigerant into the equipment to be filled.
S204, filling the refrigerant into the to-be-filled device 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.
Specifically, in the process of filling the refrigerant steel cylinder into the to-be-filled device, the refrigerant steel cylinder can be placed on the electronic scale so as to acquire the second quality information of the refrigerant steel cylinder and the refrigerant in the refrigerant steel cylinder in real time.
S205, the first quality information and the second quality information are subjected to difference, and the first refrigerant quality information of the refrigerant filled into the equipment to be filled is determined.
Specifically, the quality of the refrigerant steel cylinder can be determined through the first quality information of the refrigerant in the refrigerant steel cylinder and 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. The quality of the refrigerant in the filling device can be obtained by subtracting the first quality information and the second quality information.
And 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, acquiring target filling quality of a refrigerant required by equipment to be filled.
S102, 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.
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.
The first preset threshold value is smaller than the target filling quality.
Specifically, the first preset threshold is a value of balance between pressure in the equipment to be filled and external pressure, and when the first refrigerant quality information reaches the first preset threshold, the first pressure switch and the second pressure switch are closed. Illustratively, the first preset threshold may be 15%, 20%, 25% or the like of the target fill quality.
S302, after the first pressure switch and the second pressure switch are closed, controlling the equipment to be filled to enter a static state, and acquiring first time information of the equipment to be filled entering the static state.
Specifically, after the first pressure switch and the second pressure switch are closed, the refrigerant is stopped from being injected into the equipment to be filled, and the equipment to be filled enters a static state for balancing the internal pressure. First time information of the device to be filled into a stationary state is acquired, and the stationary time may be 30S, 60S, 90S, or the like, as an example.
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, acquiring target filling quality of a refrigerant required by equipment to be filled.
S102, 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.
S401, when the first refrigerant quality information is greater than or equal to the preset threshold value, the first pressure switch and the second pressure switch are controlled 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 filling efficiency is high when the first pressure switch and the second pressure switch are simultaneously opened, when the first refrigerant mass information is greater than or equal to 1/5 of the target filling mass, the pressure in the cavity of the equipment to be filled is increased to a higher level, and the first pressure switch and the second pressure switch are required to be temporarily closed, so that the equipment to be filled enters a static state for balancing the internal pressure.
S302, after the first pressure switch and the second pressure switch are closed, controlling the equipment to be filled to enter a static state, and acquiring first time information of the equipment to be filled entering the static state.
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, acquiring target filling quality of a refrigerant required by equipment to be filled.
S102, 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.
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 is at a lower level before the refrigerant is filled, 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 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 a comparison result.
Specifically, the pressure level in the cavity of the equipment to be filled can be directly determined by comparing the pressure information in the cavity of the equipment to be filled with a preset pressure threshold, wherein the preset pressure threshold is a value of pressure in the equipment to be filled with balanced pressure with external pressure, when the first refrigerant quality information reaches the preset pressure threshold, the pressure in the cavity of the equipment to be filled is increased to a higher water level, and the first pressure switch and the second pressure switch are closed to enable the equipment to be filled to enter a static state for balancing 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, acquiring target filling quality of a refrigerant required by equipment to be filled.
S102, 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.
And 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 opened according to a comparison result.
Specifically, the pressure inside the cavity of the equipment to be filled can be uniform through standing, the filling process and the safety of the equipment to be filled are improved, the refrigerant can be continuously filled after the equipment to be filled stands 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 continuously fill the refrigerant. At this time, the pressure in the cavity of the device 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.
S602, obtaining second refrigerant quality information of the refrigerant filled into the device to be filled.
Specifically, the second refrigerant quality information is the quality of the refrigerant which is already filled into the equipment to be filled after the second pressure switch is turned on. Acquiring the 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 to-be-filled device with the target filling quality to generate a comparison result.
Specifically, since the quality of the refrigerant to be filled in the device to be filled has reached the first preset threshold value. The two values are gradually close to each other along with the filling of the refrigerant.
S604, adjusting the working state of the second pressure switch according to the comparison result.
Specifically, as the refrigerant is filled, the value of the second refrigerant quality information increases, and when the value of the second refrigerant quality information approaches the target filling quality, the opening of the second pressure switch is gradually reduced to slow down the refrigerant filling speed until the filling is completed. Illustratively, when the magnitude of the second refrigerant mass information reaches 90% of the target filling mass, 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, acquiring target filling quality of a refrigerant required by equipment to be filled.
S102, 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.
And 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 opened according to a comparison result.
S602, obtaining second refrigerant quality information of the refrigerant filled into the device to be filled.
S701, comparing second refrigerant quality information of the refrigerant filled into the device to be filled with the refrigerant 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 end of filling, and at the moment, the second pressure switch is controlled to reduce the flow. Wherein the second preset threshold is greater than the first preset threshold and the second preset threshold is less than the target filling quality. For example, the second preset threshold may be 90% of the target fill mass.
S603, comparing the second refrigerant quality information of the refrigerant filled into the to-be-filled device with the target filling quality to generate a comparison result.
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, acquiring target filling quality of a refrigerant required by equipment to be filled.
S102, 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.
And 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 opened according to a comparison result.
S602, obtaining second refrigerant quality information of the refrigerant filled into the device to be filled.
S603, comparing the second refrigerant quality information of the refrigerant filled into the to-be-filled device with the target filling quality to generate a comparison result.
S801, when the second refrigerant quality information of the refrigerant filled into the equipment to be filled is equal to the target filling quality, controlling the compressor of the equipment to be filled to be started.
Specifically, when the second refrigerant quality information of the refrigerant in the to-be-filled device is equal to the target filling quality, the fact that filling is completed is described, and at the moment, the compressor of the to-be-filled device is started, so that the refrigerant splashing amount when the pipeline is pulled out can be reduced, and the accuracy and the safety are further improved.
S802, when the pressure of the second pressure switch is smaller than a pressure threshold value, closing of the second pressure switch is controlled.
Specifically, when the pressure of the second pressure switch is less than the pressure threshold, indicating that filling is complete, the second pressure switch may be closed and the line 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, acquiring target filling quality of a refrigerant required by equipment to be filled.
S102, 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.
And 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 through a halogen leak detector to generate detection data.
Specifically, after the filling of the device to be filled is completed, the device to be filled needs to be detected through a halogen leak detector, and detection data is generated, wherein the halogen leak detector is used for detecting whether the halogen element leaks or not. The arrangement can prevent halogen leakage and further improve the safety of the equipment to be filled.
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 equipment to be filled needs to be cleaned, and if the halogen leak detector does not detect leakage, the equipment to be filled can be used normally.
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 embodiment, referring to fig. 10, the refrigerant filling device 100 includes:
the first detection module 11 is used for acquiring target filling quality of the refrigerant required by the equipment to be filled;
the control module 12 is used for controlling the first pressure switch and the second pressure switch to be turned on 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 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 filling quality, and obtain first time information of standing;
the adjusting module 13 is configured to adjust an operating state of the second pressure switch according to the first time information, so as to fill the refrigerant into the device to be filled to the target filling quality; wherein the pressure parameter of the first pressure switch is greater than the pressure parameter of the second pressure switch.
Optionally, the control module 12 is specifically configured to connect the device to be filled with the refrigerant steel cylinder through a pipeline, and obtain the first quality information of the refrigerant steel cylinder and the refrigerant in the refrigerant steel cylinder. And exhausting the pipeline through a vacuum pump to obtain pressure 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, the first pressure switch and the second pressure switch are controlled to be turned on. And filling the 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 the first quality information and the second quality information are subjected to difference, and the first refrigerant quality information of the refrigerant filled into the equipment to be filled is determined.
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, controlling the equipment to be filled to enter a static state, and acquiring first time information of the equipment to be filled entering the static state.
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 to-be-filled device 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 the 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 to-be-filled device 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 the refrigerant with a second preset threshold, and control the first pressure switch to reduce the flow according to the 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 first detection module acquires target filling quality of a refrigerant required by the equipment to be filled, the control module controls 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 when the first refrigerant quality information is greater than or equal to 1/5 of the target filling quality, the control module controls the first pressure switch and the second pressure switch to be closed and acquires first time information of standing, and at the moment, the equipment to be filled enters a standing state for balancing internal pressure. 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 filling the refrigerant. At the moment, the adjusting module acquires second refrigerant quality information of the refrigerant in the to-be-filled device, compares the second refrigerant quality information of the refrigerant filled into the to-be-filled device with a 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. At the moment, a compressor of the equipment to be filled is started to reduce the refrigerant splashing amount when the pipeline is pulled out, the equipment to be filled is detected through 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 flow, eliminates the hidden danger of leakage and improves the refrigerant filling precision and safety.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (9)
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 refrigerant into the equipment to be filled; 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;
according to the first time information, adjusting the working state of the second pressure switch to fill the refrigerant into the equipment to be filled to the target filling quality; wherein the pressure parameter of the first pressure switch is greater than the pressure parameter of the second pressure switch;
and 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, wherein the first time information 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 a comparison result.
2. The refrigerant charging method as set forth in claim 1, wherein said controlling the opening of the first pressure switch and the second pressure switch to charge the refrigerant into the to-be-charged apparatus and obtaining the first refrigerant quality information of the refrigerant charged into the to-be-charged apparatus includes:
connecting the device 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;
extracting air from the pipeline through a vacuum pump to obtain pressure 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, a first pressure switch and a second pressure switch are controlled to be turned on;
filling the 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 the first quality information and the second quality information are subjected to difference, and the first refrigerant quality information of the refrigerant filled into the equipment to be filled is determined.
3. The refrigerant charging method as set forth in claim 1, wherein said controlling the first pressure switch and the second pressure switch to be turned off and obtaining the first time information of the rest based on the first refrigerant quality information and the target charging quality includes:
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, controlling the equipment to be filled to enter a static state, and acquiring first time information of the equipment to be filled entering the static state.
4. The refrigerant charging method as set forth in claim 3, wherein said comparing said first refrigerant quality information with a first preset threshold value, and controlling said first pressure switch and said second pressure switch to be turned off based on a result of the comparison, comprises:
when the first refrigerant quality information is greater than or equal to the first preset threshold value, the first pressure switch and the second pressure switch are controlled to be closed;
wherein the first preset threshold is equal to 1/5 of the target filling quality.
5. The refrigerant charging method as set forth in claim 3, wherein said adjusting an operating state of said second pressure switch according to said first time information to charge the refrigerant to said device to be charged to said 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 the second refrigerant quality information of the refrigerant filled into the to-be-filled device 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.
6. The refrigerant charging method as set forth in claim 5, wherein before said comparing said second refrigerant quality information based on the refrigerant charged into said device to be charged with said target charging quality, further comprising:
comparing the second refrigerant quality information of the refrigerant filled into the to-be-filled device 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.
7. The refrigerant charging method as set forth in claim 5, wherein said adjusting an operating state of said second pressure switch based on said comparison result includes:
when the 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;
and when the pressure of the second pressure switch is smaller than the pressure threshold value, controlling the second pressure switch to be closed.
8. The refrigerant charging method according to claim 1, wherein after controlling an operation 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, further comprising:
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.
9. A refrigerant charging device, comprising:
the first detection module is used for acquiring target filling quality of the refrigerant required by the 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 used for 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 obtaining 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 the pressure parameter of the first pressure switch is greater than the pressure parameter of the second pressure switch;
and 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, wherein the first time information 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 a comparison result.
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| CN202211571482.7A CN115900152B (en) | 2022-12-08 | 2022-12-08 | Refrigerant filling method and refrigerant filling device |
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| US5999700A (en) * | 1998-03-23 | 1999-12-07 | Geers; Kevin | Portable refrigerant supply tank heating unit |
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| CN115900152A (en) | 2023-04-04 |
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