CN201358953Y - Single-stage low-speed centrifugal blower - Google Patents

Abstract

The utility model discloses a single-stage low-speed centrifugal blower, of which an impeller adopts a ternary impeller. As the impeller provided by the utility model adopts the impeller with the most advanced ternary flow theory at present, and hence can realize efficient control to the vorticity distribution of gas particles, the flow loss is small, the efficiency is 8 to 10 percent higher than that of the prior similar blower, and the energy is saved by 2 to 10 percent.

Description

Single-stage low-speed centrifugal blower

Technical field

The utility model relates to a kind of single-stage low-speed centrifugal blower.

Background technique

Centrifugal blower is a kind of turbomachinery that is used for conveying gas, and impeller is the core part of centrifugal blower, is the key point of its complete machine performance quality.Gas is three-dimensional space motion at the mobile of impeller inside, though present state-of-the-art Theory of Three-dimensional Flowing designing technique is come out, but single-stage low-speed centrifugal blower still adopts the impeller according to the mobile Design Theory of monobasic, be binary impeller (see figure 3), make that present single-stage low-speed centrifugal blower efficiency is low, energy consumption is big.

The model utility content

The purpose of this utility model is to provide a kind of single-stage low-speed centrifugal blower that can be significantly energy-conservation.

This single-stage low-speed centrifugal blower that the utility model provides comprises impeller, and what this impeller adopted is 3 d impeller.

The utility model single-stage low-speed centrifugal blower is because its impeller is the 3 d impeller that adopts present state-of-the-art Theory of Three-dimensional Flowing design, it adopts the mobile inverse proposition formula of ternary, the Vorticity Distribution of input impeller internal flow particle, directly obtain ternary twisted blade moulding coordinate by numerical calculation, realization is to effective control of gas particle Vorticity Distribution, so flow losses are little, the efficient height, improve 8～10%, energy-conservation 2～10% than existing similar blower efficiency.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the 3 d impeller structural representation.

Fig. 3 is the impeller schematic representation that adopts in the prior art single-stage low-speed centrifugal blower.

Embodiment

The utility model single-stage low-speed centrifugal blower has intake grill 1 as can be seen from Figure 1, impeller 2, what wherein impeller 2 adopted is 3 d impeller, 3 d impeller designs with present existing state-of-the-art Theory of Three-dimensional Flowing designing technique, this design is with the mobile inverse proposition formula of ternary, the Vorticity Distribution of input impeller internal flow particle, directly obtain spatial warping leaf type shape (as shown in Figure 2) by numerical calculation, because the blade of impeller 2 is the moulding of ternary twisted blade, its profile designs according to impeller internal flow particle Vorticity Distribution, more near the mobile time of day of impeller 2 internal gas, flow losses are little, the thermodynamic efficiency height.During work, gas flows into the 3 d impeller with any space curved surface moulding by intake grill 1, by these impeller 2 rotations, make gas be subjected to action of centrifugal force and produce pressure, meanwhile gas obtains speed, and gas stream is when expanding channels such as Diffuser, and gas flow speed progressively slows down again and becomes the raising of gas pressure.

Claims (1)

1, a kind of single-stage low-speed centrifugal blower comprises impeller (2), it is characterized in that described impeller (2) adopts 3 d impeller.

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