CN212253257U - Enthalpy difference table vacuum pumping device - Google Patents
Enthalpy difference table vacuum pumping device Download PDFInfo
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- CN212253257U CN212253257U CN202021741027.3U CN202021741027U CN212253257U CN 212253257 U CN212253257 U CN 212253257U CN 202021741027 U CN202021741027 U CN 202021741027U CN 212253257 U CN212253257 U CN 212253257U
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- 238000005086 pumping Methods 0.000 title claims description 16
- 239000003507 refrigerant Substances 0.000 claims abstract description 102
- 238000002474 experimental method Methods 0.000 description 17
- 238000012360 testing method Methods 0.000 description 8
- 238000004378 air conditioning Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
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Abstract
The utility model discloses an enthalpy difference table vacuumizing device, which comprises an enthalpy difference table and a refrigerant pipe group, wherein the refrigerant pipe group comprises a refrigerant pipe suitable for a type of refrigerant; a vacuum pump connected with the refrigerant pipe in a connecting and disconnecting manner; the refrigerant pipe is fixed on the pressure tool, the vacuum pump comprises an air suction port, and the air suction port is connected with the refrigerant pipe; the access pipe is provided with a pressure sensor, the refrigerant pipe is provided with a switch valve, and the vacuum pump is also provided with a vacuum gauge; the vacuum gauge, the pressure sensor and the switch valve are electrically connected with the controller. Compared with the prior art, the utility model provides an among the prior art enthalpy difference platform evacuating device because need frequent manual operation and lead to the technical problem that work efficiency is low.
Description
Technical Field
The utility model relates to an air conditioner capability test device field especially relates to an enthalpy difference platform evacuating device.
Background
The enthalpy difference platform is a testing device used for measuring various performance parameters of the air conditioner, including rated refrigerating capacity, rated heating capacity, air quantity, power consumption, performance coefficient parameters and the like, the enthalpy difference platform is required to be used for debugging experiments in a large quantity in the air conditioner development process, and an air conditioning unit is required to perform vacuumizing operation on an internal and external machine connecting pipe and an internal machine evaporator when being installed, so that the influence of air on the performance and reliability of the whole air conditioner in a pipeline system is avoided. However, current enthalpy difference laboratory vacuum pumping has the following disadvantages: 3 experiment tables share 1 vacuum pump, the vacuum pump is moved by a trolley, and the vacuum pump is damaged due to falling and oil leakage; the vacuumized pressure tool needs to manually replace refrigerants of different types, and the vacuum pump needs to be removed when the high-low temperature working condition is carried out on the outer side of the vacuumized pressure tool; the vacuumizing and pressure maintaining time is operated by a laboratory technician, and the mistake and fool proofing can not be realized.
SUMMERY OF THE UTILITY MODEL
The utility model provides an enthalpy difference platform evacuating device has solved among the prior art enthalpy difference platform evacuating device and has leaded to the technical problem that work efficiency is low because of need frequent manual operation.
The utility model adopts the technical proposal that: an enthalpy difference station vacuum pumping apparatus, comprising at least one enthalpy difference station, further comprising: the refrigerant pipe groups are communicated with the enthalpy difference platforms, and the refrigerant pipe groups connected with the enthalpy difference platforms at least comprise refrigerant pipes suitable for one type of refrigerant; and the vacuum pump can be connected with the refrigerant pipes in an on-off manner.
Furthermore, the group of refrigerant pipes comprises a plurality of refrigerant pipes corresponding to refrigerants of various types.
Furthermore, the enthalpy difference table vacuumizing device further comprises a pressure tool provided with the vacuum pump, the refrigerant pipes are fixed on the pressure tool, the vacuum pump comprises air suction ports, and the air suction ports are connected with the refrigerant pipes.
Furthermore, an access pipe is arranged on the pressure tool, one end of the access pipe is connected with the air suction port, and the other end of the access pipe is connected with each refrigerant pipe.
Furthermore, a pressure sensor is also arranged on the access pipe.
Furthermore, each refrigerant pipe is provided with a switch valve.
Furthermore, a vacuum gauge is also arranged on the vacuum pump.
Further, the enthalpy difference table vacuumizing device further comprises a controller, and the controller is electrically connected with the vacuum gauge, the pressure sensor, the vacuum pump and the switch valve.
Compared with the prior art, the utility model discloses in all set up the refrigerant nest of tubes at every enthalpy difference bench, every enthalpy difference bench all corresponds the refrigerant pipe that is equipped with an at least type refrigerant, when carrying out evacuation operation to the air conditioner that awaits measuring, through the break-make with the vacuum pump of controlling each refrigerant pipe, make at every turn when evacuation operation, operating personnel need not the manual work and changes refrigerant pipe and mobile vacuum pump, subtract vacuum pump removal and change manometer pipe dismantlement action, the work efficiency is improved, laboratory is average to test 20 sets of machines every day, remove at every turn and connect the manometer pipe, it needs 15min to connect the power supply, can save 300min man-hours every day, the enthalpy difference bench evacuating device leads to the technical problem that work efficiency is low owing to need frequent manual operation among the prior art has been solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Figure 1 is a schematic diagram of the structure of an enthalpy difference table vacuum extractor of the utility model;
fig. 2 is a schematic diagram of the structure of the pressure tool of the present invention;
fig. 3 is a schematic flow chart of a control method of the enthalpy difference table vacuum pumping device according to the present invention.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The utility model provides an enthalpy difference platform evacuating device, its enthalpy difference platform that includes at least one model, every enthalpy difference bench all is connected with a set of refrigerant pipe, and at least including the refrigerant pipe that is applicable to a type number refrigerant in the refrigerant pipe that all enthalpy difference platforms are connected, all refrigerant pipes are through inserting pipe and vacuum pump connection, make the vacuum pump selectively carry out the evacuation operation through the break-make of controlling every refrigerant pipe.
Specifically, as shown in fig. 1, in an embodiment of the present invention, two kinds of enthalpy difference test tables, 3HP and 6HP respectively, are provided in the enthalpy difference table vacuum pumping device according to the size of the testing capability; each enthalpy difference experiment table is divided into an inner side and an outer side, a group of refrigerant pipes are connected to the outer side of each enthalpy difference experiment table, the outer side A1 and the inner side A2 of the 3HP enthalpy difference experiment table, the outer side B1 and the inner side B2 of the 6HP enthalpy difference experiment table are connected, the outer side A1 of the 3HP enthalpy difference experiment table is connected with a first refrigerant pipe group 1, the outer side B1 of the 6HP enthalpy difference experiment table is connected with a second refrigerant pipe group 2, and the first refrigerant pipe group 1 and the second refrigerant pipe group 2 are fixed through copper pipes of 6 cm.
In this embodiment, each of the first refrigerant pipe group 1 and the second refrigerant pipe group 2 is provided with a refrigerant pipe, the first refrigerant pipe group 1 corresponds to a refrigerant pipe with a refrigerant model of R22, the second refrigerant pipe group 2 corresponds to a refrigerant pipe with a refrigerant model of R32, and the first refrigerant pipe group 1 and the second refrigerant pipe group 2 are simultaneously communicated with the vacuum pump 3.
Specifically, as shown in fig. 2, the vacuum pump 3 in the present application is fixedly installed on a pressure tool 4, the pressure tool 4 includes an access pipe 41, one end of the access pipe 41 is communicated with an air suction port of the vacuum pump 3, and the other end of the access pipe 41 is also simultaneously communicated with a plurality of refrigerant connection pipes 42, the number of the refrigerant connection pipes 42 is consistent with the number of refrigerant pipes connected to all enthalpy difference stations, each refrigerant connection pipe 42 corresponds to one refrigerant pipe, and the refrigerant pipe is detachably installed on the refrigerant connection pipe 42, so that the refrigerant pipe can be replaced at will to meet the refrigerant pressure requirements of different models, and the refrigerant pipe is also convenient to detach and maintain; and each refrigerant pipe is provided with a switch valve for controlling the on-off of the refrigerant pipe, preferably an electromagnetic valve.
The number of the refrigerant connecting pipes 42 in this embodiment is 2, and the refrigerant connecting pipes are respectively connected with the first refrigerant pipe group 1 and the second refrigerant pipe group 2, the first refrigerant pipe group 1 is provided with the first electromagnetic valve 11, the second refrigerant pipe group 2 is provided with the second electromagnetic valve 21, the first electromagnetic valve 11 and the second electromagnetic valve 21 control the on-off of the respective corresponding refrigerant pipes, when the refrigerant model of the air conditioning unit to be tested in the enthalpy difference table of the 3HP enthalpy difference experiment table is R22, the first refrigerant pipe group 1 is controlled to be opened to perform the vacuum pumping operation; in a similar way, when the first refrigerant pipe group 1 comprises refrigerant pipes of various refrigerant models, then, the appropriate refrigerant pipe can be automatically selected according to the type of the air conditioning refrigerant to be tested on the 3HP enthalpy difference experiment table, the 6HP enthalpy difference experiment table is also the same, the enthalpy difference experiment table capable of respectively controlling different testing capacities can extract the refrigerants of different models by setting the enthalpy difference experiment table, when the model of the air conditioner to be tested is replaced (the refrigerant model is also replaced), the vacuumizing operation can be directly started, the connecting pipeline of an operator and the mobile vacuum pump are not needed, the time is greatly saved, and the testing efficiency is improved.
Further, a vacuum gauge 31 is disposed on the vacuum pump 3, and the vacuum gauge 31 is used for detecting the pressure value of the vacuum pump 3 so as to control the vacuum pump to be turned on.
Further, still be provided with a pressure sensor 43 in this application on access pipe 41, pressure sensor 43 can real-time detection system pressure value, specifically for after the evacuation, cuts off the refrigerant pipe, and pressure sensor 43 detects system pressure this moment, and the pressure value that detects when it is stable in certain time then says that the evacuation is qualified, can open the air conditioner and carry out test work.
Furthermore, the enthalpy difference table vacuum pumping device further comprises a controller (not shown), a manual interaction interface (a resistance screen) electrically connected with the controller, the vacuum gauge 31, the pressure sensor 43 and the switch valves such as the first electromagnetic valve 11 and the second electromagnetic valve 21 are electrically connected, a laboratory technician selects a corresponding refrigerant pipe according to the refrigerant model of the air conditioner to be tested, selects a corresponding experiment table, and can be directly opened to perform the work of vacuum pumping, pressure maintaining and the like by operating the resistance screen.
As shown in fig. 3, the method for controlling the enthalpy difference table vacuum pumping apparatus according to the present application includes: firstly, determining the type of a refrigerant in an air conditioner to be tested, if the number of refrigerant pipes connected with a single enthalpy difference experiment table is limited, automatically replacing the refrigerant pipes, and if the single enthalpy difference experiment table can be connected with the refrigerant pipes corresponding to various types of refrigerants, replacing the refrigerant pipes is not needed; selecting an enthalpy difference experiment table of a required type to start; and then the controller controls the refrigerant pipe corresponding to the refrigerant type to be opened for vacuumizing operation, after vacuumizing is carried out for 15min, whether pressure maintaining is qualified is checked, when the pressure maintaining is qualified, the refrigerant pipe is cut off, the vacuum pump stops running, the air conditioner to be tested is started for detection, if the pressure maintaining is not qualified, the whole device needs to be checked, and whether the pipeline leaks air is detected.
Further, the judgment condition whether the pressure maintaining is qualified is as follows: and cutting off the refrigerant pipe, keeping the system pressure of the air conditioner to be tested within 5min after the refrigerant pipe is cut off to be-0.095-1, namely keeping the pressure normally, and if the fluctuation is large, indicating that the pressure is abnormal.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. An enthalpy difference station vacuum pumping apparatus, comprising at least one enthalpy difference station, characterized by further comprising: the refrigerant pipe groups are communicated with the enthalpy difference platforms, and the refrigerant pipe groups connected with the enthalpy difference platforms at least comprise refrigerant pipes suitable for one type of refrigerant; and the vacuum pump can be connected with the refrigerant pipes in an on-off manner.
2. The enthalpy difference table vacuum pumping apparatus according to claim 1, wherein the set of refrigerant pipes includes a plurality of refrigerant pipes corresponding to a plurality of types of refrigerants.
3. The enthalpy difference table vacuumizing apparatus according to claim 1, further comprising a pressure tool on which the vacuum pump is mounted, wherein the refrigerant pipe is fixed to the pressure tool, and the vacuum pump includes a suction port connected to each of the refrigerant pipes.
4. An enthalpy difference table vacuumizing apparatus according to claim 3, wherein an access pipe is provided on the pressure tool, and one end of the access pipe is connected to the suction port, and the other end is connected to each refrigerant pipe.
5. An enthalpy difference station vacuum pumping apparatus according to claim 4, wherein a pressure sensor is further provided on the access tube.
6. An enthalpy difference table vacuum pumping apparatus according to claim 5, wherein each of the refrigerant pipes is provided with a switching valve.
7. An enthalpy difference stage vacuum pumping apparatus according to claim 6, wherein a vacuum gauge is further provided on the vacuum pump.
8. The enthalpy difference station vacuum pumping apparatus of claim 7, further comprising a controller in electrical communication with the vacuum gauge, pressure sensor, and switching valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021741027.3U CN212253257U (en) | 2020-08-19 | 2020-08-19 | Enthalpy difference table vacuum pumping device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021741027.3U CN212253257U (en) | 2020-08-19 | 2020-08-19 | Enthalpy difference table vacuum pumping device |
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| CN212253257U true CN212253257U (en) | 2020-12-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879036A (en) * | 2020-08-19 | 2020-11-03 | 格力电器（武汉）有限公司 | Enthalpy difference table vacuumizing device and control method thereof |
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- 2020-08-19 CN CN202021741027.3U patent/CN212253257U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879036A (en) * | 2020-08-19 | 2020-11-03 | 格力电器（武汉）有限公司 | Enthalpy difference table vacuumizing device and control method thereof |
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