CN208281239U - Volute structure and centrifugal compressor - Google Patents
Volute structure and centrifugal compressor Download PDFInfo
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- CN208281239U CN208281239U CN201820880578.4U CN201820880578U CN208281239U CN 208281239 U CN208281239 U CN 208281239U CN 201820880578 U CN201820880578 U CN 201820880578U CN 208281239 U CN208281239 U CN 208281239U
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Abstract
It include cabinet the utility model relates to a kind of volute structure, cabinet is equipped with tonifying Qi connector, spiral case is equipped in cabinet, volute structure further includes the first partition and second partition detachably connected with cabinet, first partition, second partition and spiral case are axially spaced to be arranged along cabinet, first partition, second partition and cabinet surround tonifying Qi chamber, tonifying Qi connector is connected to tonifying Qi chamber, second partition surrounds the diffuser being connected to spiral case with cabinet, first partition is annular in shape with second partition, the inner edge of second partition extends to form the bushing being bonded with first partition and for installing impeller.The volute structure of the utility model, it is convenient for disassembly and assembly, and mold opening cost can be reduced.The utility model further relates to a kind of centrifugal compressor.
Description
Technical field
The utility model relates to technical field of refrigeration equipment more particularly to a kind of volute structures and centrifugal compressor.
Background technique
In centrifugal compressor, after compression due to gas, temperature can be steeply risen, and at high temperature, gas specific volume is very big,
In the case where guaranteeing identical refrigerating capacity, energy consumption of compressor will be increased dramatically.
In order to reduce compressor wasted work, refrigerating capacity is improved, multi-stage compression refrigeration cycle is commonly used.Currently, using the widest
General is " the not exclusively cooling refrigeration cycle in Two-stage Compression centre with flash steam separator (being commonly called as economizer).
Two-stage compression refrigeration circulation is flash steam that will separate from economizer with from the exhaust phase of rudimentary compression
Mixing, reduces the intake air temperature of two-stage compression, declines refrigerant gas specific volume, and energy consumption of compressor reduces.
But tonifying Qi scheme in the prior art structure setting volute structure, volute structure usually in compressor include
Cabinet, spiral case, tonifying Qi chamber and diffuser, volute structure is interior to install impeller, to carry out two-stage compression.However, in the prior art
Cabinet, spiral case, tonifying Qi chamber and the diffuser of volute structure be integrated casting, which causes volute structure whole complicated,
Dismounting is inconvenient and mold opening cost is high.
Utility model content
Based on this, a kind of volute structure that can be simple with structure, convenient for disassembly and assembly and low mold opening cost is provided.
A kind of volute structure includes cabinet, and the cabinet is equipped with tonifying Qi connector, is equipped with spiral case, the snail in the cabinet
Shell structure further includes being located in the cabinet and the first partition and second partition detachably connected with the cabinet, and described the
One partition, the second partition and the spiral case are axially spaced to be arranged along the cabinet, the first partition, described
Second partition and the cabinet surround tonifying Qi chamber, and the tonifying Qi connector is connected to the tonifying Qi chamber, the second partition and institute
It states cabinet and surrounds the diffuser being connected to the spiral case, the first partition and the second partition are annular in shape, and described second
The inner edge of partition extends to form the bushing being bonded with the first partition and for installing impeller.
Further, the inner wall of the bushing includes the first face of the wheel cap setting towards the impeller, first face
There is gap between the wheel cap of the impeller, the section molded line in first face and the wheel cap molded line of the impeller are identical.
Further, the inner wall of the bushing towards one end of the first partition is equipped with annular slotted, and the annular is opened
The wheel cap for sealing the gap is equipped in slot to seal.
Further, the inner wall of the bushing further includes that both ends are separately connected the second partition inner edge and first face
The second face, second face is located at the entrance of diffuser, and second face is inclined-plane.
Further, the inner wall of the cabinet is equipped with first annular step slot, and the first annular step slot position is in described
The outside of first partition, and further from the second partition for the relatively described first partition, the outer rim of the first partition is prolonged
It stretches to form first annular step portion, the first annular step portion is located in first annular step slot, and the first fixing piece passes through institute
State the inner wall that first annular step portion locks the cabinet.
Further, the inner wall of the cabinet is equipped with the second ring-shaped step slot, and the second ring-shaped step slot position is in described
Between second partition and the first partition, the outer rim of the second partition extends to form the second annular step, and described second
Annular step is located in the second ring-shaped step slot, and the second fixing piece passes through second annular step and locks the case
The inner wall of body.
Further, inlet end going out to the tonifying Qi connector of the tonifying Qi connector inner flow passage from the tonifying Qi connector
Gas end is tapered.
Further, the part of tonifying Qi chamber described in the inner wall face of the cabinet is equipped with annular capacity expansion tank.
Further, the first partition is exported equipped with multiple tonifying Qi chambers, and multiple tonifying Qi chamber outlets are circumferentially
It is equally spaced in the first partition.
The utility model further relates to a kind of centrifugal compressor, including impeller and transmission shaft, further includes above-mentioned spiral case knot
Structure, the impeller are mounted in the bushing, and the transmission shaft wears the cabinet.
Volute structure in the centrifugal compressor of the utility model passes through first partition and second partition and setting snail
The cabinet of shell is detachably connected, and first partition and second partition form and form tonifying Qi chamber, second partition and cabinet with cabinet
Inner wall form the diffuser being connected to spiral case again so that the volute structure of the utility model compared with the existing technology in cabinet,
It is simple in construction, easy to disassemble and assemble for tonifying Qi chamber and the integrally formed spiral case shell of diffuser, and mold opening cost can be reduced.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the volute structure of the utility model embodiment.
Fig. 2 is the schematic cross-sectional view of Fig. 1.
The schematic diagram of first partition and second partition built-up section in Fig. 3 figure 2 above.
Fig. 4 is the schematic diagram of the housing parts in Fig. 2.
Fig. 5 is the schematic cross-sectional view using the centrifugal compressor of the volute structure of the utility model hair.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
The present invention will be further described in detail for example.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
Referring to Figure 1-5, the utility model provides a kind of centrifugal compressor, including volute structure 100, is mounted on spiral case
Impeller 200 in structure 100 and the transmission shaft 300 for wearing volute structure 100.Volute structure 100 includes cabinet 1, is set to case
Spiral case 2 and the first partition 3 detachably connected in cabinet 1 and with cabinet 1 and second partition 4 in body 1.On cabinet 1
Equipped with tonifying Qi connector 11.First partition 3, second partition 4 and spiral case 2 are axially spaced to be arranged along cabinet 1.First partition
3, second partition 4 and cabinet 1 surround tonifying Qi chamber 5, and tonifying Qi connector 11 is connected to tonifying Qi chamber 5.Second partition 4 is surrounded with cabinet 1
The diffuser 6 being connected to spiral case 2.First partition 3 and second partition 4 are annular in shape, the inner edge of second partition 4 extended to form with
The bushing 40 that first partition 3 is bonded, first partition 3 and second partition 4 are respectively provided with circlewise, can be worn, be made for transmission shaft 300
Transmission shaft 300 can wear cabinet 1.Impeller 200 is mounted on transmission shaft 300 and is located in bushing 40.
Specifically, cabinet 1 is casting, and cabinet 1 is used to install the most of part such as impeller for constituting compressor, transmission
Axis, diffuser etc..Be equipped with asphalt channel and gas channels in cabinet 1, gas channels have an inlet end, first partition 3 relative to
For second partition 4, closer to the inlet end of gas channels.
In the present embodiment, the inner wall of bushing 40 includes the first face 401 of the wheel cap setting towards impeller 200, the first face
401 are arranged with the wheel cap interval of impeller 200, i.e., have gap between the first face 401 and the wheel cap of impeller 200, to facilitate impeller
200 rotations.It is appreciated that due to gap presence, impeller 200 outlet outflow air-flow can by the gap from impeller 200 into
Mouth end leaks out, which constitutes the channel of airflow leaks, in order to reduce the gas flow of the position, in the present embodiment,
The section molded line in the first face 401 and the wheel cap molded line of impeller 200 are identical, make the first face 401 and the impeller 200 of the inner wall of bushing 40
Wheel cap between have uniform gap, can reduce the channel size of 200 flow leakage of impeller, to reduce the gas of the position
The friction loss of the wheel cap side of impeller 200 can be effectively reduced in flow.
In order to further decrease the throughput at above-mentioned position, the inner wall of bushing 40 towards one end of first partition 3 is equipped with
Annular slotted 402, is equipped with wheel cap sealing 7 in annular slotted 402, and wheel cap sealing 7 can also will airflow leaks to above-mentioned gap
Channel be sealed, to reduce the throughput in the channel of airflow leaks, wheel cap sealing 7 passes through the fixing pieces such as sunk screw
It is mounted on bushing 40, wherein wheel cap sealing 7 is existing, and details are not described herein.
Specifically, bushing 40 has outer end face towards one end of first partition 3, and first partition 3 has towards second partition 4
First end face and second end face away from second partition 4, bushing 40 outer end face for referring to bushing 40 is bonded with first partition 3
It is bonded with the first end face of first partition 3.In the present embodiment, a part of the outer end face of 402 penetration liner 40 of annular slotted,
Wheel cap sealing 7 is bonded with the first end face of first partition 3 simultaneously in this way, enhances the leakproofness of first partition 3 and bushing 40.Into one
The outer end face (not opening up the part of annular slotted 402 specially) on step ground, bushing 40 is equipped with first annular slot 403, passes through sealing
Circle be mounted in first annular slot 403, when so that bushing 40 being bonded with first partition 3, further enhance bushing 40 and first every
Leakproofness between plate 3.
In the present embodiment, the second end face of first partition 3 namely deviates from end face and the first partition 3 of second partition 4
Junction it is excessive in inclined-plane, to form one draining hole, the draining hole be in it is horn-like, in order to which air-flow enters impeller 200.
In the present embodiment, the first end face of first partition 3 is suitable equipped with what is extended to the outer rim of first partition 3 from inner edge
Slot allocation 31, bushing 40 are located at adaptation groove 31 towards one end of first partition 3, thus by 40 location and installation of bushing in first partition 3
On.
It should be noted that second partition 4 includes first end face towards first partition 3 and away from first partition 3
Second end face, forms the planar annular 12 towards the second end face of second partition 4 on the inner wall of cabinet 1, and the second of second partition 4
End face and planar annular 12 constitute above-mentioned diffuser 6.In the present embodiment, the inner wall of bushing 40 further includes that both ends are separately connected
Second face 404 of two partitions, 4 inner edge and the first face 401, the second face 404 are located at the channel of diffuser 6, the outlet of impeller 200
At the second face 404, and the second face 404 is inclined-plane.It is appreciated that the import department of the export mixes diffuser 6 of impeller 200
Point, the second face 404, which can effectively be held back, receives impeller outlet air-flow and imports in the channel of diffuser 6.
In the present embodiment, first partition 3 by the inner wall of the first fixing piece such as sunk screw and cabinet 1 removably
Connection.Specifically, the inner wall of cabinet 1 is equipped with first annular step slot 13, and first annular step slot 13 is located at the outer of first partition 3
Side, and further from second partition 4 for opposite first partition 3, the outer rim of first partition 3 extends to form first annular step portion
32, first annular step portion 32 is located in first annular step slot 13, and the first fixing piece passes through first annular step portion 32 and locks
The inner wall of cabinet 1, so that first partition 3 is removably attached in cabinet 1, be arranged the structure purpose be in order to realize by
3 location and installation of first partition is in cabinet 1.
Further, the outer rim of first partition 3 is bent to form curved portion 33, the first ring to the direction away from second partition 4
Shape stage portion 32 is formed in the free end of curved portion 33.The purpose that curved portion 33 is arranged is to make curved portion 33 and centrifugal compressed
Level-one diffuser 400 in machine constitutes U-bend road, and to assemble return channel 500, the structure is as described below.
In the present embodiment, second partition 4 by the inner wall of the second fixing piece such as sunk screw and cabinet 1 removably
Connection.Specifically, the inner wall of cabinet 1 is equipped with the second ring-shaped step slot 14, and the second ring-shaped step slot 14 is located at second partition 4 and the
Between one partition 3, the outer rim of second partition 4 extends to form the second annular step 44, and the second annular step 44 is located at second
In ring-shaped step slot 14, the second fixing piece passes through the inner wall that the second annular step 44 locks cabinet 1, thus by first partition 3
The purpose of being removably attached in cabinet 1, the structure is arranged is to realize and second partition 4 is located in cabinet 1.Further
Ground, in order to avoid the air-flow in 6 channel of diffuser leaks from the junction of the second annular step 44 and 1 inner wall of cabinet to tonifying Qi
Chamber 5, the second annular step 44 are equipped with the second annular groove 440 towards the face of the second ring-shaped step slot 14, are pacified by sealing ring
Second annular step 44 is sealed with cabinet 1 in the second annular groove 440.In other embodiments, the second annular groove
It can be provided on the wall surface of 14 the second annular step of face type 44 of the second ring-shaped step slot.
In the present embodiment, first partition 3 is equipped with multiple tonifying Qi chambers outlet 34, for centrifugal refigerating compressor
Speech, the refrigerant gas from economizer pass through pipeline out of, tonifying Qi connector 11 enters volute structure 100 tonifying Qi chamber 5, then
Tonifying Qi chamber 5 is left from tonifying Qi chamber outlet 34, thus in the gas flow that the gas from economizer is supplemented into compressor.?
In the present embodiment, tonifying Qi chamber outlet 34 is circumferentially equally spaced in first partition 3, so that in tonifying Qi chamber 5
Steady air current, to reduce the noise of compressor.
In the present embodiment, 11 inner flow passage of tonifying Qi connector is from the inlet end of tonifying Qi connector 11 to the outlet of tonifying Qi connector 11
It holds tapered, in this way, flow velocity gradually provides when flowing in tonifying Qi connector 11 into the gas in tonifying Qi connector 11, is mended entering
When air cavity 5, since the space of tonifying Qi chamber 5 is big, air-flow can expand after entering tonifying Qi chamber 5, accordingly even when being mixed in air-flow small
Liquid, small liquid is as expansion becomes gas, to avoid having liquid entrance in tonifying Qi chamber 5.Further, in order to increase
The space of big tonifying Qi chamber 5.The part of the inner wall face tonifying Qi chamber 5 of cabinet 1 is equipped with annular capacity expansion tank 15, to make tonifying Qi chamber 5
Space becomes larger.
It should be noted that centrifugal compressor in order to enhance compression effectiveness, usually all includes two stages of compression mechanism, this
Volute structure 100 and impeller 200 in utility model constitute the two-stage compression mechanism of compressor, correspondingly, in volute structure 100
Impeller 200 be sencond stage impeller, diffuser 6 be second level diffuser 6.Certainly, the utility model centrifugal compressor further includes one
Grade compression mechanism, one stage of compression mechanism include one that level-one diffuser 400, return channel 500 and one stage impeller 600 constitute compressor
Grade compression member, level-one diffuser 400 are adapted to the bend to form U-shaped, level-one diffuser 400, return channel 500 with first partition 3
And same as the prior art details are not described herein for the mounting means of one stage impeller 600.
Volute structure in the centrifugal compressor of the utility model passes through first partition 3 and second partition 4 and setting
The cabinet 1 of spiral case 2 is detachably connected, and first partition 3 and second partition 4, which are formed, forms tonifying Qi chamber 5 with cabinet 1, second every
Plate 4 forms the diffuser 6 being connected to spiral case 2 with the inner wall of cabinet 1 again, so that the volute structure of the utility model is relative to existing
It is simple in construction, easy to disassemble and assemble in technology for cabinet, tonifying Qi chamber and the integrally formed spiral case shell of diffuser, and can subtract
Few mold opening cost.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of volute structure, including cabinet (1), the cabinet (1) is equipped with tonifying Qi connector (11), sets in the cabinet (1)
Have spiral case (2), which is characterized in that the volute structure further include positioned at the cabinet (1) and with the cabinet (1) removably
The first partition (3) of connection and second partition (4), the first partition (3), the second partition (4) and the spiral case (2)
It is axially spaced to be arranged along the cabinet (1), the first partition (3), the second partition (4) and the cabinet
(1) it surrounds tonifying Qi chamber (5), the tonifying Qi connector (11) is connected to the tonifying Qi chamber (5), the second partition (4) and the case
Body (1) surrounds the diffuser (6) being connected to the spiral case (2), and the first partition (3) and the second partition (4) are in ring
Shape, the inner edge of the second partition (4), which is extended to form, to be bonded and for installing impeller (200) with the first partition (3)
Bushing (40).
2. volute structure as described in claim 1, which is characterized in that the inner wall of the bushing (40) includes towards the impeller
(200) the first face (401) of wheel cap setting, between having between first face (401) and the wheel cap of the impeller (200)
The section molded line of gap, first face (401) is identical as the wheel cap molded line of the impeller (200).
3. volute structure as claimed in claim 2, which is characterized in that the bushing (40) is towards the first partition (3)
The inner wall of one end is equipped with annular slotted (402), and the wheel cap for sealing the gap is equipped in the annular slotted (402) and is sealed
(7)。
4. volute structure as claimed in claim 2, which is characterized in that the inner wall of the bushing (40) further includes that both ends connect respectively
The second face (404) of the second partition (4) inner edge Yu first face (401) is connect, second face (404) is located at diffuser
(6) entrance, and second face (404) is inclined-plane.
5. volute structure as described in claim 1, which is characterized in that the inner wall of the cabinet (1) is equipped with first annular step
Slot (13), the first annular step slot (13) are located at the outside of the first partition (3), and the relatively described first partition (3)
For further from the second partition (4), the outer rim of the first partition (3) extends to form first annular step portion (32), institute
It states first annular step portion (32) to be located in first annular step slot (13), the first fixing piece passes through the first annular step portion
(32) inner wall of the cabinet (1) is locked.
6. volute structure as described in claim 1, which is characterized in that the inner wall of the cabinet (1) is equipped with the second ring-shaped step
Slot (14), the second ring-shaped step slot (14) is between the second partition (4) and the first partition (3), and described
The outer rim of two partitions (4) extends to form the second annular step (44), and second annular step (44) is located at described second
In ring-shaped step slot (14), the second fixing piece passes through the inner wall that second annular step (44) locks the cabinet (1).
7. volute structure as described in claim 1, which is characterized in that tonifying Qi connector (11) inner flow passage is from the tonifying Qi
The outlet side of the inlet end of connector (11) to the tonifying Qi connector (11) is tapered.
8. volute structure as described in claim 1, which is characterized in that tonifying Qi chamber (5) described in the inner wall face of the cabinet (1)
Part be equipped with annular capacity expansion tank (15).
9. volute structure as described in claim 1, which is characterized in that the first partition (3) is equipped with multiple tonifying Qi chambers and goes out
Mouth (34), multiple tonifying Qi chambers outlets (34) are circumferentially equally spaced on the first partition (3).
10. a kind of centrifugal compressor, including impeller (200) and transmission shaft (300), which is characterized in that further include that right such as is wanted
Volute structure described in 1-9 any one is sought, the impeller (200) is mounted in the bushing (40), the transmission shaft (300)
Wear the cabinet (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820880578.4U CN208281239U (en) | 2018-06-07 | 2018-06-07 | Volute structure and centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820880578.4U CN208281239U (en) | 2018-06-07 | 2018-06-07 | Volute structure and centrifugal compressor |
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| Publication Number | Publication Date |
|---|---|
| CN208281239U true CN208281239U (en) | 2018-12-25 |
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ID=64698416
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820880578.4U Active CN208281239U (en) | 2018-06-07 | 2018-06-07 | Volute structure and centrifugal compressor |
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| Country | Link |
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| CN (1) | CN208281239U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578713A (en) * | 2018-06-07 | 2019-12-17 | 浙江盾安机电科技有限公司 | Volute structure and centrifugal compressor |
-
2018
- 2018-06-07 CN CN201820880578.4U patent/CN208281239U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578713A (en) * | 2018-06-07 | 2019-12-17 | 浙江盾安机电科技有限公司 | Volute structure and centrifugal compressor |
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