阅读说明：本技术 一种整体制造蜗壳及其蒸汽压缩机 (Integrally-manufactured volute and steam compressor thereof ) 是由 王春艳 杨文莹 梁旭龙 于 2019-10-29 设计创作，主要内容包括：本发明公开一种整体制造蜗壳及其蒸汽压缩机,包括：蜗壳、导流器和无叶扩压器,所述导流器和所述无叶扩压器均设于所述蜗壳的进口处内,所述导流器靠近所述蜗壳的进口处的一端与所述蜗壳的外壁连接,所述导流器远离所述蜗壳的进口处的一端沿所述导流器的径向延伸至所述无叶扩压器与所述蜗壳的内腔。本发明不仅解决了加工周期长和制造成本高问题,而且可节省中间装配环节,提高了装配效率,同时解决了焊接蜗壳在高温下易变形这一缺陷。(The invention discloses an integrally manufactured volute and a vapor compressor thereof, comprising: the volute comprises a volute body, a flow guider and a vaneless diffuser, wherein the flow guider and the vaneless diffuser are arranged in an inlet of the volute body, one end, close to the inlet of the volute body, of the flow guider is connected with the outer wall of the volute body, and one end, far away from the inlet of the volute body, of the flow guider extends to the inner cavity of the vaneless diffuser and the inner cavity of the volute body along the radial direction of the flow guider. The invention not only solves the problems of long processing period and high manufacturing cost, but also can save intermediate assembly links, improve the assembly efficiency and simultaneously solve the defect that the welding volute is easy to deform at high temperature.)

1. An integrally fabricated volute, comprising: the volute comprises a volute body, a flow guider and a vaneless diffuser, wherein the flow guider and the vaneless diffuser are arranged in an inlet of the volute body, one end, close to the inlet of the volute body, of the flow guider is connected with the outer wall of the volute body, and one end, far away from the inlet of the volute body, of the flow guider extends to the inner cavity of the vaneless diffuser and the inner cavity of the volute body along the radial direction of the flow guider.

2. The integrally fabricated volute of claim 1, wherein the axial cross-sectional profile of the volute is a spiral or logarithmic spiral, and the cross-sectional profile perpendicular to the axial direction is a bilaterally symmetric spiral or logarithmic spiral.

3. The integrally fabricated volute of claim 1, further comprising: and the reinforcing rib plate is connected with the outer wall of the volute and one end of the fluid director, which is close to the inlet of the volute.

4. The integrally fabricated volute of claim 1, further comprising: the inlet flange is arranged at the inlet of the volute and is fixedly connected with one end, close to the inlet of the volute, of the fluid director.

5. The integrally fabricated volute of claim 4, further comprising: the mounting surface flanges are arranged on the periphery of one end, far away from the inlet flange, of the volute.

6. The integrally fabricated volute of claim 1, wherein the volute, the deflector, and the vaneless diffuser are of a unitary construction.

7. A vapor compressor comprising the integrally fabricated volute of any of claims 1-6.

Technical Field

The invention relates to the technical field of MVR evaporation systems, in particular to an integrally manufactured volute and a vapor compressor thereof.

Background

In the vapor compressor, the volute is used for collecting outlet vapor and then discharging the outlet vapor to the evaporator for heating. The steam compressor is a turbo machine with axial air inlet and radial air exhaust, and the air exhaust mode can effectively reduce the axial length of the exhaust part of the unit and is widely adopted, but the air flow speed and direction change greatly, so that the exhaust loss is large. At present, the volute mainly has two structural modes, one mode is an integral welding structure, and the other mode is an integral casting structure. The whole welding volute has good sealing performance, can effectively prevent gas leakage, but is easy to deform at high temperature. The integral casting volute structure needs to be manufactured with a mold, the period is relatively long, and the efficiency is relatively high. In a small-flow steam compressor, a casting volute structure, a traditional volute and a fluid director are mainly adopted, a mold is required to be manufactured, and the cost is relatively high.

Disclosure of Invention

Aiming at the problems of the existing casting volute structure, the overall manufacturing volute and the steam compressor thereof are provided, the problems of long processing period and high manufacturing cost are solved, the intermediate assembly link can be saved, the assembly efficiency is improved, and the defect that the welding volute is easy to deform at high temperature is overcome.

The specific technical scheme is as follows:

an integrally fabricated volute, comprising: the volute comprises a volute body, a flow guider and a vaneless diffuser, wherein the flow guider and the vaneless diffuser are arranged in an inlet of the volute body, one end, close to the inlet of the volute body, of the flow guider is connected with the outer wall of the volute body, and one end, far away from the inlet of the volute body, of the flow guider extends to the inner cavity of the vaneless diffuser and the inner cavity of the volute body along the radial direction of the flow guider.

The volute is integrally manufactured, wherein the molded line of the inner cavity of the volute along the axial section is a vortex line or a logarithmic spiral, and the section of the inner cavity of the volute along the vertical axis is a vortex line or a logarithmic spiral with two sides symmetrical.

The above integrally-manufactured volute further comprises: and the reinforcing rib plate is connected with the outer wall of the volute and one end of the fluid director, which is close to the inlet of the volute.

The above integrally-manufactured volute further comprises: the inlet flange is arranged at the inlet of the volute and is fixedly connected with one end, close to the inlet of the volute, of the fluid director.

The above integrally-manufactured volute further comprises: the mounting surface flanges are arranged on the periphery of one end, far away from the inlet flange, of the volute.

The above integrally-manufactured volute, wherein the volute, the flow director and the vaneless diffuser are of an integrated structure.

A vapor compressor comprising the integrally-fabricated volute of any of the above.

Compared with the prior art, the technical scheme has the positive effects that:

the volute, the flow guider and the vaneless diffuser are connected with one another to form an integrally cast volute structure. The invention not only solves the problems of long processing period and high manufacturing cost, but also can save intermediate assembly links, improve the assembly efficiency and simultaneously solve the defect that the welding volute is easy to deform at high temperature.

Drawings

FIG. 1 is a schematic view of an overall structure of an integrally fabricated volute and its vapor compressor according to the present invention;

FIG. 2 is a cross-sectional view of the overall construction of an integrally fabricated volute and its vapor compressor in accordance with the present invention;

in the drawings: 1. reinforcing rib plates; 2. an inlet flange; 3. a volute; 4. a fluid director; 5. a vaneless diffuser; 6. and mounting the surface flange.

Detailed Description

The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.

Fig. 1 is a schematic view showing an overall structure of an integrally-manufactured volute and a vapor compressor thereof according to the present invention, and fig. 2 is a sectional view showing an overall structure of an integrally-manufactured volute and a vapor compressor thereof according to the present invention, as shown in fig. 1 and 2, showing an integrally-manufactured volute according to a preferred embodiment, including: the volute 3, the fluid director 4 and the vaneless diffuser 5 are all arranged in the inlet of the volute 3, one end of the fluid director 4 close to the inlet of the volute 3 is connected with the outer wall of the volute 3, and one end of the fluid director 4 far away from the inlet of the volute 3 extends to the inner cavities of the vaneless diffuser 5 and the volute 3 along the radial direction of the fluid director 4.

Further, as a preferred embodiment, the molded line of the axial section of the inner cavity of the volute 3 is a vortex line or a logarithmic spiral, and the section of the vertical axis direction is a vortex line or a logarithmic spiral which are symmetrical at two sides.

The above are merely preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.

The present invention also has the following embodiments in addition to the above:

in a further embodiment of the present invention, with continued reference to fig. 1 and 2, the integrally fabricated volute further comprises: the reinforcing rib plate 1 is connected with the outer wall of the volute 3 and one end, close to the inlet of the volute 3, of the fluid director 4.

In a further embodiment of the present invention, integrally manufacturing the volute further comprises: the inlet flange 2 is arranged at the inlet of the volute 3, and the inlet flange 2 is fixedly connected with one end of the fluid director 4 close to the inlet of the volute 3.

In a further embodiment of the present invention, integrally manufacturing the volute further comprises: and the mounting surface flanges 6 are arranged on the periphery of one end of the volute 3 far away from the inlet flange 2.

In a further embodiment of the present invention, the volute 3, the flow director 4 and the vaneless diffuser 5 are of an integral construction.

Preferably, the volute 3, the flow director 4 and the vaneless diffuser 5 are of an integrally cast volute construction.

The structure of the fluid director 4 part of the invention is formed by adopting the molded line fitting matched with the impeller, and extends to the inner cavity of the volute 3 part in the radial direction, thereby forming an integral casting volute structure.

A vapor compressor employs an integrally manufactured volute.

An MVR evaporation system employs an integrally manufactured volute.

The invention has the advantages of small exhaust flow loss, compact structure and convenient processing and installation.

The volute 3 and the fluid director 4 are integrally cast, and share one die, so that the processing period is short, and the manufacturing cost is low.

The integral structure of the invention has no intermediate assembly link, and can avoid gas leakage probability.

The cast structure of the present invention can avoid high temperature deformation.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.