CN210196268U - Wiring device of magnetic suspension bearing, compressor and refrigeration equipment - Google Patents
Wiring device of magnetic suspension bearing, compressor and refrigeration equipment Download PDFInfo
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- CN210196268U CN210196268U CN201920230304.5U CN201920230304U CN210196268U CN 210196268 U CN210196268 U CN 210196268U CN 201920230304 U CN201920230304 U CN 201920230304U CN 210196268 U CN210196268 U CN 210196268U
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- 239000000725 suspension Substances 0.000 title claims abstract description 39
- 238000005057 refrigeration Methods 0.000 title abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 27
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 11
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 239000011810 insulating material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a wiring device of a magnetic suspension bearing, a compressor and refrigeration equipment, wherein the magnetic suspension bearing comprises a control winding with a first wiring end and a second wiring end, a first conductive structure and a second conductive structure are arranged in the wiring device, the first conductive structure is conductively connected with the first wiring end, and the second conductive structure is conductively connected with the second wiring end; wherein, the first conductive structure is provided with an external connection end connected with an external power supply. According to the utility model provides a magnetic suspension bearing's termination has not only simplified wiring and lead wire operation step, is equipped with conductive structure in termination moreover, can not appear the exerted problem of lead wire, and then has prolonged lead wire life, has improved the reliability of magnetic suspension bearing operation.
Description
Technical Field
The utility model relates to a magnetic suspension bearing technical field, concretely relates to magnetic suspension bearing's termination and compressor and refrigeration plant.
Background
The wiring device of the existing hybrid axial magnetic suspension bearing mainly comprises two axial control windings, four winding lead-out wires, a permanent magnet, an iron core, a thrust plate and the like, wherein each axial control winding is connected with two winding lead-out wires respectively. Because the structure form of the hybrid axial thrust bearing is special, the permanent magnet of the hybrid axial thrust bearing needs to have an independent and complete magnetic circuit in an iron core, the whole structure is a closed form when viewed from the cross section, two control windings need to be connected in series, one connection mode is to connect a common end in the bearing, then two remaining power lines of the control windings are led out, the other connection mode is to extend all four leading-out wires of the control windings out of the bearing, wherein two leading-out wires are connected to be used as a series common end, and the other two leading-out wires are used as power leading-out wires. Although the two structural forms solve the problem of wiring and leading wires of the hybrid magnetic suspension thrust bearing, the two schemes are complex in wiring and leading wire operation, and lead wires are directly led out to be exposed outside and difficult to fix.
SUMMERY OF THE UTILITY MODEL
A first object of the utility model is to provide a termination of magnetic suspension bearing to the lead wire mode operation of solving current magnetic suspension bearing is complicated, and the lead wire exposes and is difficult to fix outside, easy damaged problem.
In order to achieve the above object, the present invention provides the following technical solutions: a wiring device of a magnetic suspension bearing comprises a control winding with a first wiring end and a second wiring end, wherein a first conductive structure and a second conductive structure are arranged in the wiring device, the first conductive structure is in conductive connection with the first wiring end, and the second conductive structure is in conductive connection with the second wiring end; the first conductive structure is provided with an external connection end connected with an external power supply.
According to the utility model provides a magnetic suspension bearing's termination has not only simplified wiring and lead wire operation step, is equipped with conductive structure in termination moreover, can not appear the exerted problem of lead wire, and then has prolonged lead wire life, has improved the reliability of magnetic suspension bearing operation.
In addition, according to the utility model discloses a termination of magnetic suspension bearing of above-mentioned embodiment can also have following additional technical characterstic:
according to an example of the present invention, a first adapter member and a second adapter member are included; the first conductive structure comprises a first conductive piece and a second conductive piece, the first conductive piece is located in the first switching part, the second conductive piece and the second conductive structure are located in the second switching part, two opposite ends of the first conductive piece are respectively in conductive connection with the first wiring end and the second conductive piece, one end of the second conductive piece is connected with the first conductive piece, and the other end of the second conductive piece is used for being connected with an external power supply.
According to an example of the present invention, a first routing channel is disposed in the first adapting part, and the first conductive piece is located in the first routing channel; the second switching component is provided with a second wiring channel and a third wiring channel, the second conductive piece is located in the second wiring channel, and the second conductive structure is located in the third wiring channel.
According to an example of the present invention, the first wiring end is located in the first wiring channel.
According to an example of the present invention, the other end of the second conductive member extends out of the second routing channel.
According to an example of the present invention, the magnetic suspension bearing includes two outer iron cores and an inner iron core disposed between the two outer iron cores; the control winding is sleeved outside the inner iron core and is positioned between the two outer iron cores; the first switching part is installed on the outer iron core, and the second switching part is installed on the inner iron core.
According to the utility model discloses an example, outer iron core is equipped with the confession the first through-hole that first wiring end stretches out, first switching part be equipped with the first outer convex part of first through-hole grafting cooperation, first outer convex part is equipped with first jack, first wiring end passes first jack and with the cooperation of pegging graft of first electrically conductive piece.
According to the utility model discloses an example, the outer fringe of outer iron core is equipped with the second through-hole, the second switching part is located two between the second through-hole, first switching part be equipped with the outer convex part of second through-hole grafting complex second, the outer convex part of second is equipped with the second jack, the electrically conductive one end of second is passed the second jack and with the cooperation of pegging graft of first electrically conductive piece.
According to an example of the present invention, the power supply further comprises a third switching component, wherein the third switching component is electrically connected to the second conductive component and the external power supply respectively; when the other end of the second conductive piece extends out of the second wiring channel, the third switching component is a socket.
According to an example of the present invention, the first adapter part is detachably connected to the magnetic bearing, and/or the second adapter part is detachably connected to the magnetic bearing.
A second object of the present invention is to provide a compressor, which has the wiring device as described in the above technical solution.
A third object of the present invention is to provide a refrigeration apparatus, which comprises the compressor according to the above technical solution.
Advantages of the above additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a wiring device according to an embodiment of the present invention;
fig. 2 is a schematic connection diagram (one) of the wiring device and the magnetic suspension bearing according to the embodiment of the present invention;
fig. 3 is a schematic connection diagram (ii) of the wiring device and the magnetic suspension bearing according to the embodiment of the present invention;
fig. 4 is a top view of the wiring device and the magnetic suspension bearing according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a first interface element according to an embodiment of the invention;
fig. 6 is a schematic structural diagram (one) of a second adapter component according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram (ii) of a second adapter component according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a third adapter part according to an embodiment of the present invention;
fig. 9 is a schematic connection diagram of a second adapter component and a third adapter component according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. an outer core; 2. an inner core; 3. a control winding; 4. a first terminal; 5. an outer connecting end; 6. a first interface member; 7. a second adapter member; 8. a first conductive structure; 9. a second conductive structure; 10. A first conductive member; 11. a second conductive member; 12. a first routing channel; 13. a second routing channel; 14. A first through hole; 15. a second through hole; 16. a first convex portion; 17. a second outer convex portion; 18. a first jack; 19. a second jack; 20. a third adapter member; 21. a third jack; 22. an outgoing line; 23. A first connection hole; 24. a first mating hole; 25. a first connecting member; 26. a second connection hole; 27. a second connecting member; 28. and controlling the winding support.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example one
In conjunction with fig. 1-9, the present embodiment provides a wiring device for magnetic bearings, and in order to show the matching relationship between the wiring device and the magnetic bearings more clearly, fig. 1 of the present embodiment also shows a part of the magnetic bearings, and the relationship between the wiring device and the magnetic bearings is further described by referring to fig. 2 and 3.
Referring to fig. 1 to 3, the magnetic suspension bearing of the present embodiment includes two outer cores 1, two inner cores 2, and two control windings 3, where the two outer cores 1 are symmetrically disposed on two sides of the inner core 2, and since the magnetic suspension bearing can be regarded as a symmetrical structure, fig. 2 and 3 of the present embodiment only show one side of the outer core 1.
Referring to fig. 1 again, the control winding 3 of the present embodiment is disposed between two outer iron cores 1, and is mounted on the control winding support 28, and can be seen as being sleeved outside the inner iron core 2 through the control winding support 28, the control winding 3 has a first terminal 4 and a second terminal (not shown in the figure), a first conductive structure 8 and a second conductive structure 9 are disposed in the wiring device, the first conductive structure 8 is electrically connected to the first terminal 4, and the second conductive structure 9 is electrically connected to the second terminal; wherein, the first conductive structure 8 is provided with an external terminal 5 connected with an external power supply. It should be noted that, in the present embodiment, the "end" of the "terminal" and the "external terminal" does not necessarily refer to an end, but may be a segment with a certain length, and those skilled in the art can specifically understand the present invention according to a specific application scenario.
The wiring device with the structure simplifies the wiring and lead wire operation steps, and is provided with the conductive structure, so that the problem of lead wire exposure can be avoided, the service life of the lead wire is prolonged, and the operation reliability of the magnetic suspension bearing is improved.
Based on the structure, the structure of the line splicing device is optimized in the embodiment, so that the line splicing device is more suitable for the magnetic suspension bearing and is convenient to assemble and disassemble, and the specific structure is improved as shown in the following description.
As shown in fig. 1 to 7, the connection device of the present embodiment specifically includes a first adapting unit 6 and a second adapting unit 7, where the first adapting unit 6 is connected to the outer core 1 (or the first adapting unit 6 can be seen to be mounted on the outer core 1), and the second adapting unit 7 is connected to the inner core 2, specifically, mounted on the outer edge (upper side in fig. 1) of the inner core 2; the first conductive structure 8 includes a first conductive member 10 and a second conductive member 11, the first conductive member 10 is located in the first adapting part 6, the second conductive member 11 and the second conductive structure 9 are located in the second adapting part 7, two opposite ends of the first conductive member 10 are respectively electrically connected to the first terminal 4 and the second conductive member 11, one end of the second conductive member 11 is connected to the first conductive member 10, and the other end is used for connecting an external power source, that is, the other end (an outward extending end in the figure) of the second conductive member 11 is the outward connecting end 5.
The connection between the first terminal 4 and the first conductive member 10, the connection between the first conductive member 10 and the second conductive member 11, and the like in this embodiment can be realized in various ways, and this embodiment is preferably a plug-in manner that has a simple structure and is easy to realize, that is, the first terminal 4 and the first conductive member 10 are in plug-in fit, and the first conductive member 10 and the second conductive member 11 are in plug-in fit.
Specifically, a first routing channel 12 (or a routing hole) is disposed in the first adapter part 6, and the first conductive component 10 is located in the first routing channel 12; similarly, the second adapting part 7 is provided with a second routing channel 13 and a third routing channel (not shown in the figure), the second conductive component 11 is located in the second routing channel 13, and the second conductive structure 9 is located in the third routing channel. Referring to fig. 7, in the present embodiment, the second routing channel 13 and the third routing channel are independent from each other, and in order to achieve mutual insulation between the second conductive component 11 and the second conductive structure 9, an insulating material is filled between the second routing channel 13 and the third routing channel, and the insulating material may be a sintered glass body or an epoxy resin.
The conductive structure and the conductive member are made of a conductive material, such as a metal material, and those skilled in the art can select the conductive structure and the conductive member according to the requirement, so that the embodiment will not be described in detail about the specific material and the structural form thereof.
Preferably, the first terminal 4 of this embodiment is located in the first wire channel 12, so that the whole wire is protected in the device, and the first terminal 4 is connected to the first conductive member 10, the connection between the first terminal 4 and the first conductive member 10 is achieved by providing a first through hole 14 for the first terminal 4 to extend out through the outer iron core 1, a first external protrusion is provided on the first adapting member 6, the first external protrusion is in insertion fit with the first through hole 14, the first external protrusion is provided with a first jack (the first jack can be regarded as a part of the first wire channel 12), and the first terminal 4 passes through the first jack and is in conductive connection with the first conductive member 10. Except for the accommodating terminal, the first outer convex part is mainly used for being matched with the outer iron core 1 in an inserting mode, so that the connection and the positioning of the wiring device on the magnetic suspension bearing are facilitated, and the installation of the wiring device and the magnetic suspension bearing is facilitated.
The first conductive piece 10 and the second conductive piece 11 are connected by arranging a second through hole 19 at the outer edge of the outer iron core 1, the second switching component 7 is positioned between the two second through holes 19 and is installed at the outer edge of the inner iron core 2, the first switching component 6 is provided with a second external convex part which is in plug-in fit with the second through hole 19, the second external convex part is provided with a second jack, one end of the second conductive piece 11 penetrates through the second jack and is in conductive connection with the first conductive piece 10, and the other end of the second conductive piece 11 extends out of the second routing channel 13.
Referring to fig. 1, 8 and 9, in order to facilitate connection with an external power supply, the connection device of this embodiment further includes a third adapting component 20, where the third adapting component 20 is electrically connected to the second conductive member 11 and the external power supply, respectively, and is used to connect the second conductive member 11 with the external power supply, specifically, a third jack 21 is disposed in the third adapting component 20 of this embodiment and is connected to an outgoing line 22, the outgoing line 22 is located at one end of the third adapting component 20 and is connected to an outer end of the second conductive member 11, an outer end of the outgoing line 22 is directly connected to a power supply (not shown in the figure), and the third adapting component 20 may be an existing socket structure.
The first adapter part 6 of the present embodiment is detachably connected to the magnetic bearing, and the second adapter part 7 is also detachably connected to the magnetic bearing. Specifically, the middle portion of the first adapter part 6 is provided with one first connection hole 23, the upper portion thereof is provided with two first connection holes, the outer core 1 is provided with three first engagement holes 24, and the wiring device of the present embodiment further has three first connection members 25, wherein each first connection member 25 is detachably connected to the first adapter part 6 and the outer core 1 by passing through the first connection hole 23 and the first engagement hole 24, respectively; two second connecting holes 26 are respectively formed in two sides of the second adapter part 7, two second matching holes (not shown in the figure) are formed in the outer edge of the inner iron core 2, the wiring device of the embodiment further comprises two second connecting pieces 27, and the second adapter part 7 and the inner iron core 2 are detachably connected by respectively penetrating the second connecting pieces 27 through the second connecting holes 26 and the second matching holes. The first connector 25 and the second connector 27 may be screws, but may be other structural members capable of being detachably connected.
When the wiring device of the present embodiment is assembled, the second adapting component 7 is first installed on the inner core 2, and the second adapting component 7 is fixed by the second connecting member 27, then the two first outward protruding portions of the two first adapting components 6 are respectively inserted into the two first through holes 14, the two second outward protruding portions are respectively inserted into the two second through holes 19, so as to realize the conductive connection between the first terminal 4 and the first conductive member 10, and simultaneously realize the connection between the first conductive member 10 and the second conductive member 11, then the first adapting component 6 and the outer core 1 are relatively fixed by the first connecting member 25, and finally the third adapting component 20 and the second adapting component 7 are connected.
As can be seen from the above assembling process, the wiring device of the present embodiment has a simple assembling process, and only one plugging step is required to connect the first conductive member 10 to the second conductive member 11 and the first terminal 4, respectively. In addition, the present embodiment does not show the connection of the second conductive structure 9 and the second terminal, which may be connected in the same manner as the first terminal 4 and the first conductive member 10, and thus the present embodiment will not be described herein too much.
Example two
The present embodiment provides a compressor having a wiring device and a magnetic suspension bearing as described in the first embodiment, and since the improvement of the compressor of the present embodiment is only the wiring device and the magnetic suspension bearing, and the rest of the structure of the compressor is the same as the prior art, the present embodiment does not describe the compressor with reference to the drawings, and does not describe other components of the compressor, but those skilled in the art can fully understand the above structure.
EXAMPLE III
The embodiment provides a refrigeration device, which may be an air conditioner, and has the compressor described in the second embodiment, and similarly, since the refrigeration device of the embodiment is improved only by the wiring device and the magnetic suspension bearing of the compressor, and the rest of the structure of the refrigeration device is the same as that of the prior art, the refrigeration device is not illustrated in the embodiment.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (12)
1. A connection device for a magnetic bearing, the magnetic bearing comprising a control winding (3) having a first connection terminal (4) and a second connection terminal, characterized in that a first electrically conductive structure (8) and a second electrically conductive structure (9) are provided in the connection device, the first electrically conductive structure (8) being electrically conductively connected to the first connection terminal (4), the second electrically conductive structure (9) being electrically conductively connected to the second connection terminal; wherein the first conductive structure (8) is provided with an external connection end (5) connected with an external power supply.
2. A wiring connection for magnetic bearings according to claim 1, characterized in that it comprises a first (6) and a second (7) interface member; the first conductive structure (8) comprises a first conductive piece (10) and a second conductive piece (11), the first conductive piece (10) is located in the first switching part (6), the second conductive piece (11) and the second conductive structure (9) are located in the second switching part (7), two opposite ends of the first conductive piece (10) are respectively in conductive connection with the first wiring terminal (4) and the second conductive piece (11), one end of the second conductive piece (11) is connected with the first conductive piece (10), and the other end of the second conductive piece is used for being connected with an external power supply.
3. The wiring device of a magnetic suspension bearing according to claim 2, characterized in that a first wiring channel (12) is provided in the first adapting part (6), and the first conductive member (10) is located in the first wiring channel (12); the second switching component (7) is provided with a second wiring channel (13) and a third wiring channel, the second conductive piece (11) is located in the second wiring channel (13), and the second conductive structure (9) is located in the third wiring channel.
4. A wiring connection arrangement for a magnetic bearing according to claim 3, characterized in that the first terminal (4) is located within the first track channel (12).
5. A wiring device for magnetic suspension bearings according to claim 3, characterized in that the other end of the second conductive member (11) extends out of the second routing channel (13).
6. A wiring connection for magnetic suspension bearings according to claim 3, characterized in that the magnetic suspension bearing comprises two outer iron cores (1) and an inner iron core (2) placed between the two outer iron cores (1); the control winding (3) is sleeved outside the inner iron core (2) and is positioned between the two outer iron cores (1); the first switching component (6) is installed on the outer iron core (1), and the second switching component (7) is installed on the inner iron core (2).
7. The wiring device of a magnetic suspension bearing according to claim 6, characterized in that the outer core (1) is provided with a first through hole (14) for the first terminal (4) to protrude, the first adapting part (6) is provided with a first outer protrusion (16) which is in plug-fit engagement with the first through hole (14), the first outer protrusion (16) is provided with a first plug hole (18), and the first terminal (4) passes through the first plug hole (18) and is in plug-fit engagement with the first conductive member (10).
8. The wiring device of the magnetic suspension bearing according to claim 6, characterized in that the outer edge of the outer iron core (1) is provided with a second through hole (15), the second adapting component (7) is located between two second through holes (15), the first adapting component (6) is provided with a second external convex part (17) which is in plug-in fit with the second through hole (15), the second external convex part (17) is provided with a second jack (19), and one end of the second conductive piece (11) passes through the second jack (19) and is in plug-in fit with the first conductive piece (10).
9. A wiring connection device for magnetic suspension bearings according to any of the claims 3-8, characterized in that it further comprises a third adapting member (20), said third adapting member (20) being electrically conductively connected to said second electrically conductive member (11) and to an external power source, respectively; when the other end of the second conductive piece (11) extends out of the second routing channel (13), the third switching component (20) is a socket.
10. A wiring connection device for magnetic suspension bearings according to any of the claims 2-8, characterized in that the first interface member (6) is detachably connected to the magnetic suspension bearing and/or the second interface member (7) is detachably connected to the magnetic suspension bearing.
11. A compressor, characterized in that it comprises a wiring device according to any one of claims 1 to 10.
12. A refrigerating apparatus having a compressor as claimed in claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920230304.5U CN210196268U (en) | 2019-02-21 | 2019-02-21 | Wiring device of magnetic suspension bearing, compressor and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920230304.5U CN210196268U (en) | 2019-02-21 | 2019-02-21 | Wiring device of magnetic suspension bearing, compressor and refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210196268U true CN210196268U (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920230304.5U Withdrawn - After Issue CN210196268U (en) | 2019-02-21 | 2019-02-21 | Wiring device of magnetic suspension bearing, compressor and refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210196268U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812500A (en) * | 2019-02-21 | 2019-05-28 | 珠海格力电器股份有限公司 | Wiring device of magnetic suspension bearing, compressor and refrigeration equipment |
-
2019
- 2019-02-21 CN CN201920230304.5U patent/CN210196268U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812500A (en) * | 2019-02-21 | 2019-05-28 | 珠海格力电器股份有限公司 | Wiring device of magnetic suspension bearing, compressor and refrigeration equipment |
| CN109812500B (en) * | 2019-02-21 | 2024-05-03 | 珠海格力电器股份有限公司 | Wiring device of magnetic suspension bearing, compressor and refrigeration equipment |
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