CN209557235U - Screw compressor and refrigeration equipment - Google Patents

Abstract

The utility model relates to daily-use electrical appliance technical fields, and in particular to a kind of screw compressor and refrigeration equipment.Screw compressor provided by the utility model includes upper bracket, fixed scroll and liquid supply pipe, and the upper bracket has the confession fluid apertures being connected and oil sump；The fixed scroll is installed on the upper bracket, and the fixed scroll has inlet opening, cooling bath and drainage hole, and the inlet opening, the cooling bath and the drainage hole are interconnected；The both ends of the liquid supply pipe are connect with the confession fluid apertures and inlet opening respectively, to be connected to the oil sump and the cooling bath.In this screw compressor provided by the utility model, by carrying out cooling work to fixed scroll to improve its friction environment；At the same time it can also reduce the content of liquid refrigerants in the oil sump for be deposited on upper bracket.

Description

Screw compressor and refrigeration equipment

Technical field

The utility model relates to daily-use electrical appliance technical fields, and in particular to a kind of screw compressor and refrigeration equipment.

Background technique

Screw compressor is widely used because having many advantages, such as that structure is simple, noise is small, work efficiency is high.Pump Body Parts Abrasion be influence screw compressor reliability key factor, this is because friction and compression refrigerant between Pump Body Parts The high temperature of generation will reduce the lubrication property of refrigeration oil, to accelerate the abrasion between Pump Body Parts.In addition, for absorbing gas belt liquid Operating condition, the liquid refrigerants for being deposited on lower cover bottom is transported in upper bracket oil sump by oil pump, the refrigeration oil quilt with liquid refrigerants Main balance weight is shoveled out to movable orbiting scroll and upper bracket frictional contact surface, causes to wear between movable orbiting scroll and upper bracket, to influence The reliability of compressor.

Utility model content

(1) technical problem to be solved by the utility model is: the high temperature that scroll compressor compresses refrigerant generates, Yi Jileng But the lubrication property of refrigeration oil can be reduced by being mixed with refrigerant in oil, accelerate the abrasion between Pump Body Parts.

(2) technical solution

In order to realize that above-mentioned technical problem, the first aspect of the utility model provide a kind of screw compressor comprising: on Bracket, the upper bracket have the confession fluid apertures being connected and oil sump；

Fixed scroll, the fixed scroll are installed on the upper bracket, and the fixed scroll has inlet opening, cooling bath and drain Hole, the inlet opening, the cooling bath and the drainage hole are interconnected；

Liquid supply pipe, the both ends of the liquid supply pipe are connect with the confession fluid apertures and inlet opening respectively, be connected to the oil sump and The cooling bath.

Optionally, the fixed scroll includes main body and cover board, and the cover plate lid is set to the main body, forms the cooling Slot, the main body have the drainage hole, and the inlet opening is set on the cover board.

Optionally, the inlet opening includes interconnected the first hole section and the second hole section, first hole section with it is described Liquid supply pipe connection, the axis of first hole section is vertical with the axis of the fixed scroll, second hole section and the cooling bath Connection, the axis of second hole section are parallel with the axis of the fixed scroll.

Optionally, flexible gasket is provided between the main body and the cover board.

Optionally, the inlet opening and the drainage hole are respectively arranged in the fixed scroll along perpendicular to itself axial direction The opposite end in direction.

Optionally, the cooling bath includes first chamber and second chamber, the first chamber and the second chamber it Between be provided with partition portion, the first chamber and the second chamber, which respectively correspond, is provided with the inlet opening and the drain Hole.

Optionally, the liquid supply pipe is provided with one, and each inlet opening is connected to the liquid supply pipe, each drain Hole is connected to same drain pipe, and the drain pipe extends to the direction close to the oil sump.

Optionally, the inlet opening and the drainage hole are respectively arranged in the fixed scroll along extension side, the partition portion To opposite end.

Optionally, partition portion is provided in the cooling bath, the partition portion is connect with the side cavity wall of the cooling bath, And be provided between the other side cavity wall of the cooling bath and be connected to notch, edge surrounds the fixed scroll axially direction, described Inlet opening and the drainage hole are located at the opposite sides in the partition portion.

The second aspect of the utility model also provides a kind of refrigeration equipment comprising is vortexed provided by any of the above-described Compressor.

Beneficial effect

In screw compressor provided by the utility model, cooling bath is provided in fixed scroll, and it passes through inlet opening, confession Liquid pipe and confession fluid apertures three realize the purpose being connected to oil sump, thus in the course of work of screw compressor, screw compressor The cooling oil that refrigerant is mixed in the oil sump of upper bracket can be sent into cooling bath by interior oil pump by pressure difference, be mixed with the cooling of refrigerant The heat in fixed scroll can be absorbed in oil, to complete to improve rubbing for fixed scroll to the cooling work of fixed scroll in screw compressor Environment is wiped, guarantees that cooling oil has preferably lubrication property；Meanwhile refrigerant endothermic gasification, it is isolated from cooling oil, to prevent The decline for causing lubricant effect in cooling oil because being mixed with refrigerant, slows down the rate of depreciation between movable orbiting scroll and upper bracket, is promoted While the reliability of screw compressor, the refrigerating capacity of screw compressor can also be promoted.

Detailed description of the invention

The advantages of the utility model is above-mentioned and/or additional aspect will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:

Fig. 1 is the cross-sectional view of part-structure in screw compressor provided by the utility model embodiment；

Fig. 2 is the schematic diagram of part-structure in screw compressor shown in fig. 1；

Fig. 3 be Fig. 2 shows structure decomposition diagram；

Fig. 4 be Fig. 2 shows structure in main body structural schematic diagram；

Fig. 5 be Fig. 2 shows structure cover plate structural schematic diagram；

Fig. 6 be Fig. 2 shows structure cover plate structural schematic diagram in another direction；

Fig. 7 be Fig. 2 shows structure in upper bracket and liquid supply pipe structural schematic diagram；

Fig. 8 is another cross-sectional view of part-structure in screw compressor provided by the utility model embodiment；

Fig. 9 be Fig. 8 shown in screw compressor in part-structure schematic diagram；

Figure 10 is the decomposition diagram of the structure shown in Fig. 9；

Figure 11 be Fig. 9 shown in structure in main body structural schematic diagram；

Figure 12 is the structural schematic diagram of the structure cover plate shown in Fig. 9；

Figure 13 is the structural schematic diagram of structure cover plate in another direction shown in Fig. 9.

Appended drawing reference

1- upper bracket；

11- confession fluid apertures；

12- oil sump；

2- fixed scroll；

21- main body；

210- groove；

211- drainage hole；

212- partition portion；

22- cover board；

221- inlet opening；

3- liquid supply pipe；

31- straight tube；

32- is connected to elbow；

4- flexible gasket；

5- drain pipe；

6- movable orbiting scroll；

7- crankshaft；

8- upper cover；

9- lower case.

Specific embodiment

In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this reality It can be combined with each other with the feature in novel embodiment and embodiment.

As shown in figures 1-13, the utility model provides a kind of screw compressor comprising upper bracket 1, fixed scroll 2 and feed flow Pipe 3, fixed scroll 2 are mounted on upper bracket 1, and upper bracket 1 has oil sump 12, are provided with cooling bath in fixed scroll 2, oil sump 12 and cold But slot is connected to by liquid supply pipe 3, to the cooling oil for being mixed with refrigerant in oil sump 12 is delivered in cooling bath, thus in scroll compression In the course of work of contracting machine, the work that cools to screw compressor can be completed by the lower cooling oil of temperature, improved The friction environment of fixed scroll 2；Meanwhile refrigerant completes gasification after certain heat on absorbing screw compressor, with from It is isolated in cooling oil, prevents the decline for causing self-lubrication effect in cooling oil because being mixed with refrigerant, guarantee that cooling oil has Preferable lubricant effect, slows down pump assembly, such as the rate of depreciation between movable orbiting scroll 6 and upper bracket 1.

Specifically, confession fluid apertures 11, the size of confession fluid apertures 11 can be formed on upper bracket 1 by way of boring processing It can be corresponding selected according to the model of screw compressor and configuration；It is supplied alternatively, can directly be formed to have by way of die casting The upper bracket 1 of fluid apertures 11；Similarly, the generation type of the inlet opening 221 in fixed scroll 2 and drainage hole 211 also there are many, herein It is not construed as limiting.Liquid supply pipe 3 can be made of flexible materials such as plastics, and both ends can pass through modes and the inlet openings such as interference fit 221 are connected to confession fluid apertures 11, to guarantee that the cooling oil for being mixed with refrigerant in the course of work of screw compressor can be in the work of pressure difference Under firmly, enter in cooling bath out of oil sump 12, and then at least absorb the heat in fixed scroll 2, to cool down screw compressor, and Isolate refrigerant out of liquid coolant by way of gasification；Alternatively, as shown in figure 3, liquid supply pipe 3 can also for metal or Straight tube 31 made of other hard materials, correspondingly, this liquid supply pipe 3 can be realized and upper branch by the equal components of connecting bend 32 The purpose that frame 1 and fixed scroll 2 connect, connecting bend 32 can be connected through a screw thread part and connect with upper bracket 1 and fixed scroll 2, and one Aspect can guarantee arbitrarily there is reliable connection effect therebetween, on the other hand be also convenient for dismounting screw compressor Work facilitates staff to overhaul and safeguard.Certainly, as shown in Figure 1, can also include movable orbiting scroll 6, crankshaft in screw compressor 7, the components such as upper cover 8 and lower case 9, upper this 8 connects with lower case 9, with to the other component offer being contained in the two centainly Protective effect.

Further, as seen in figures 3-6, fixed scroll 2 may include main body 21 and cover board 22, and the lid of cover board 22 is located at main body 21 On, the side of main body 21 towards cover board 22 can be set fluted 210, and connect with cover board 22, form cooling bath, drainage hole 211 can be set in main body 21, since the cooling oil that confession liquid pipe 3 is sent into cooling bath has certain initial velocity, thus, The cooling oil with certain flow rate is after entering cooling bath in order to prevent, directly to mobile at the position where drainage hole 211, And the time for causing cooling oil to retain in cooling bath is shorter, and then seriously reduces the cooling effect of cooling oil；Preferably, feed liquor Hole 221 can be set on cover board 22, this can make cooling oil from the moving direction after the entrance cooling bath of inlet opening 221, no It is identical that direction is connected between inlet opening 221 and drainage hole 211, and then can promote cooling oil to a certain extent in cooling bath The time inside retained；Degree is filled up at the same time it can also promote cooling oil in cooling bath, further to promote cooling oil institute energy Absorb the maximum of the heat in fixed scroll 2；Furthermore it is also possible to the thorough degree that refrigerant is separated out of cooling oil is promoted, thus It is further ensured that cooling oil lubricant effect with higher.

Specifically, it can be connected by screw bolt and nut between cover board 22 and main body 21, and in order to guarantee the close of cooling bath Closing property, it is preferable that as shown in figure 3, being also provided with flexible gasket 4 between cover board 22 and main body 21, flexible gasket 4 can To be made of flexible materials such as rubber, this can guarantee that cooling bath has reliable airtight performance, to prevent screw compressor In the course of work, the slot leakage of cooling oil or gaseous refrigerant between main body 21 and cover board 22 goes out, and to screw compressor Normal work have an adverse effect.

In order to make cooling oil be full of cooling bath as much as possible, it is preferable that inlet opening 221 may include the first hole section and second Hole section, the first hole section and the second hole section are interconnected, and the first hole section is connected to liquid supply pipe 3, and can make the axis of the first hole section It is vertical with the axis of fixed scroll 2, in order to the progress of the first hole section processing work, and the first hole can be selected according to actual needs The hole depth of section, and then the relative positional relationship between inlet opening 221 and cooling bath is controlled, to be further ensured that cooling oil can be use up Cooling bath may be maximumlly full of；Second hole section is connected to cooling bath, and can make the axis of the second hole section and fixed scroll 2 Axis is parallel, and then flows into the second hole section in cooling oil through the first hole section, and during flowing to cooling bath from the second hole section, Flow cooling oil along the axis direction of fixed scroll 2, so that cooling oil is from after the outflow of inlet opening 221, it is necessary to vertical In in the plane in aforementioned axis direction, i.e., on the bottom surface of cooling bath in flow over a distance after, can just flow to drainage hole It at 211, and is discharged out of cooling bath, this can undoubtedly increase cooling oil length of flow path and when retaining in cooling bath Between, thus further promoted cooling oil absorbent heat summation, can also be promoted refrigerant separated with cooling oil it is thorough Degree further prevents the lubricant effect for reducing cooling oil in cooling oil there are refrigerant and hot environment, slows down scroll compression The degree of wear in contracting machine between each component.

Specifically, the first hole section and the second hole section can be respectively formed in fixed scroll 2 by boring the modes such as processing, and can To control the hole depth of the first hole section according to the position of cooling bath；The section of first hole section and the second hole section all can be round, and The sectional area of the two can be made equal, and according to the actual conditions of screw compressor, the sectional area of drainage hole 211 and confession fluid apertures 11 Equal many factors, the sectional area of flexible design inlet opening 221.

In order to further enhance the length of cooling oil flow path in cooling bath, it is preferable that inlet opening 221 and drainage hole 211 can be separately positioned in fixed scroll 2 along the opposite end perpendicular to itself axially direction, and then cooling oil is from inlet opening After 221 flow into cooling bath, cooling oil can only be along the bottom surface for flowing through cooling bath perpendicular to 2 axially direction of fixed scroll, Cai Nengcong Drainage hole 211 flows out cooling bath, this can guarantee that the bottom surface of cooling bath can be completely covered in cooling oil substantially, reaches promotion to whirlpool Revolve the purpose of compressor cooling effect；There is certain viscosity accordingly, due to cooling oil, this can also further promote cooling The amount for the cooling oil filled in slot, so that the cooling effect of screw compressor maximizes；In addition, this can also be promoted refrigerant with Coolant liquid thorough degree disconnected from each other, to guarantee that cooling oil has preferable lubricant effect.

Optionally, as shown in FIG. 10 and 11, cooling bath may include first chamber and second chamber, first chamber and second Partition portion 212 is provided between chamber, and first chamber and second chamber respectively correspond and be provided with inlet opening 221 and drainage hole 211, thus by way of reducing single cavity volume, to be further ensured that the amount for the cooling oil filled in cooling bath reaches It is maximum.Specifically, partition portion 212 can be integrally formed with main body 21, can also make the volume base of first chamber and second chamber This is equal, and correspondingly, the flow of each inlet opening 221 can also be of substantially equal, this can guarantee cooling oil on screw compressor Cooling effect caused by each section is essentially identical, to prevent screw compressor from the cold and hot situation difference mistake of different parts occur Greatly, achieve the purpose that promote screw compressor service life.The setting position of inlet opening 221 and drainage hole 211 in first chamber Setting may be the same or different with the setting position of inlet opening 221 and drainage hole 211 in second chamber；Preferably, first Inlet opening 221 and drainage hole 211 on chamber can be respectively arranged at fixed scroll 2 along opposite the two of 212 extending direction of partition portion End；More specifically, the groove 210 for being used to form cooling bath in fixed scroll 2 can be approximate circle structure, and then quiet in guarantee In the case that whirlpool disk 2 has the structural strength of meet demand, in order to maximize the volume of cooling bath, the whole of cooling bath can be made Shape is also near cylindrical, and cooling bath is divided by partition portion 212 for first chamber and second chamber, in order to make first chamber and The volume of second chamber is essentially identical, and keeps the structure in partition portion 212 simple as far as possible, and partition portion 212 can be set in cold But at the diameter place of slot, and inlet opening 221 and drainage hole 211 can be separately positioned on the both ends in partition portion 212, so that cooling The path that liquid flows in cooling bath as far as possible it is long, to promote the cooling effect that generates to screw compressor, and promotion is cold But the thorough degree that oil is separated with refrigerant.

In addition, in some cases, can also make cooling bath includes more than two chamber, and is separately equipped with each chamber There are corresponding inlet opening 221 and drainage hole 211, thus keep the volume of single chamber smaller, thus be easier to be full of by coolant liquid, In this regard, being not construed as limiting herein.

In order to keep the feed flow process of cooling oil more convenient and uniformly, liquid supply pipe 3 can only be arranged one, this can also be reduced The complexity of screw compressor internal structure；Multiple inlet openings 221 can be connected to the liquid supply pipe 3, to pass through one The purpose to chamber feed flows disconnected from each other multiple in cooling bath can be realized in liquid supply pipe 3, this can also guarantee as aforementioned each chamber The temperature of the cooling oil of room supply is essentially identical, to guarantee to cooling effect caused by different location on screw compressor Also essentially identical, achieve the purpose that promote screw compressor service life.Optionally, as shown in Figure 2 and Figure 9, each drainage hole 211 It can also be connected to same drain pipe 5, to carry out unified collection to the cooling oil after absorption heat, and be emitted into close to upper The position of oil sump 12 on bracket 1, the difference that on the one hand can prevent cooling oil from flowed in screw compressor from multiple drainage holes 211 At position, next cooling cycle process can be rapidly entered by being on the other hand also convenient for cooling oil, promote the cycle efficieny of cooling oil.Tool Body, intercommunicating pore can be formed between two inlet openings 221 directly in fixed scroll 2 by way of boring processing, so that multiple Inlet opening 221 can be connected to same liquid supply pipe 3；Correspondingly, intercommunicating pore also can be set between multiple drainage holes 211, thus It is connected to multiple drainage holes 211 can with same drain pipe 5, and then guarantee that each indoor cooling oil of chamber can be from same drain Pipe 5 is discharged, and drain pipe 5 can be flexible pipe, in order to guarantee the connection reliability between drain pipe 5 and fixed scroll 2, preferably Ground, drain pipe 5 can be made of hard material, and it can be connect between fixed scroll 2 by connectors such as screws.

Optionally, partition portion 212 set in cooling bath can be connect with the side cavity wall of cooling bath, and itself and cooling Connection notch can be set between the other side cavity wall of slot, and made inlet opening 221 and drainage hole 211 along around 2 axis of fixed scroll To direction be separately positioned on the opposite sides in partition portion 212, thus in the course of work of screw compressor, cooling oil pass through into After fluid apertures 221 flows into cooling bath, need to bypass partition portion 212 just can be from the drainage hole 211 for being located at 212 other side of partition portion Outflow, this can promote the length of coolant liquid flow path in cooling bath, and cooling oil can be made as more full of cold as possible But slot, to guarantee to generate better cooling effect to screw compressor.Specifically, inlet opening 221 and drainage hole 211 can use up , to further increase the length in cooling oil flowed through path in cooling bath, cooling may be promoted close to the cavity wall of cooling bath Effect.

Specifically, partition portion 212 can be integrally formed with main body 21；Alternatively, can be in 21 molding of main body of fixed scroll 2 Afterwards, then by washing it the modes such as processing is cut forms groove 210 towards the side of cover board 22 in main body 21, can set in partition portion 212 Be equipped with mounting hole, thus in connecting cover plate 22 and during main body 21, can also by passing through the bolt of aforementioned mounting hole, into One step reinforces the reliability of connection relationship and the leakproofness of cooling bath between main body 21 and cover board 22.

Based on screw compressor provided by any of the above-described embodiment, the utility model also provides a kind of refrigeration equipment, Including screw compressor provided by any of the above-described embodiment.

In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term " on ", "lower" To be based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, without referring to Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage Solution is limitations of the present invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as indicating Or imply relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connection ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be direct connection, can also by intermediary indirect communication, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' " contains Justice is two or more.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (10)

1. a kind of screw compressor characterized by comprising

Upper bracket (1), the upper bracket (1) have the confession fluid apertures (11) being connected and oil sump (12)；

Fixed scroll (2), the fixed scroll (2) are installed on the upper bracket (1), the fixed scroll (2) have inlet opening (221), Cooling bath and drainage hole (211), the inlet opening (221), the cooling bath and the drainage hole (211) are interconnected；

The both ends of liquid supply pipe (3), the liquid supply pipe (3) are connect with the confession fluid apertures (11) and inlet opening (221) respectively, with connection The oil sump (12) and the cooling bath.

2. screw compressor according to claim 1, which is characterized in that the fixed scroll (2) includes main body (21) and lid Plate (22), the cover board (22) are covered on the main body (21), form the cooling bath, and the main body (21) has the drain Hole (211), the inlet opening (221) are set on the cover board (22).

3. screw compressor according to claim 2, which is characterized in that the inlet opening (221) includes interconnected First hole section and the second hole section, first hole section are connect with the liquid supply pipe (3), the axis of first hole section with it is described quiet The axis of whirlpool disk (2) is vertical, and second hole section is connected to the cooling bath, the axis of second hole section and the fixed scroll (2) axis is parallel.

4. screw compressor according to claim 2, which is characterized in that between the main body (21) and the cover board (22) It is provided with flexible gasket (4).

5. screw compressor according to claim 1, which is characterized in that the inlet opening (221) and the drainage hole (211) it is respectively arranged on the fixed scroll (2) along the opposite end perpendicular to itself axially direction.

6. screw compressor according to claim 1, which is characterized in that the cooling bath includes first chamber and the second chamber Room is provided with partition portion (212), the first chamber and the second chamber between the first chamber and the second chamber It is correspondingly arranged on the inlet opening (221) and the drainage hole (211).

7. screw compressor according to claim 6, which is characterized in that the liquid supply pipe (3) is provided with one, each described Inlet opening (221) is connected to the liquid supply pipe (3), and each drainage hole (211) is connected to same drain pipe (5), the row Liquid pipe (5) extends to the direction close to the oil sump (12).

8. screw compressor according to claim 6, which is characterized in that the inlet opening (221) and the drainage hole (211) it is respectively arranged on the fixed scroll (2) along the opposite end of partition portion (212) extending direction.

9. screw compressor according to claim 1, which is characterized in that partition portion (212) are provided in the cooling bath, The partition portion (212) connect with the side cavity wall of the cooling bath, is provided between the other side cavity wall of the cooling bath It is connected to notch, along around the fixed scroll (2) axially direction, the inlet opening (221) and the drainage hole (211) difference position In the opposite sides of the partition portion (212).

10. a kind of refrigeration equipment, which is characterized in that including screw compressor described in any one of claim 1-9.