Efficient current collector

Abstract

The utility model discloses an efficient current collector which belongs to the technical field of air conditioners and comprises an inlet end, a pressure stabilizing end and an outlet end, the inlet end comprises a first straight section, a contraction section and a second straight section, the cross section of the first straight section is square, the cross section of the second straight section is round, the second straight section is connected with the pressure stabilizing end, and the contraction section is connected with the pressure stabilizing end. The cross section of the pressure stabilizing end is circular, and the cross section of the outlet end is circular. The inlet end is in a rounded rectangle shape and is effectively connected with the heat exchanger, flowing of airflow is improved, the efficiency of the converter is improved, and meanwhile noise is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of air conditioners, and in particular relates to a high-efficiency current collector. Background Art

[0002] With the application of large-capacity multi-split units in large-scale building systems, the single capacity of the top-discharge unit has exceeded 42P in the industry. How can a single large-capacity unit exert its performance? The duct system, as one of the three major energy-efficient components of air conditioners, has excellent performance that directly determines the energy efficiency of the entire machine and its compatibility with the actual installation scenario. At present, large-scale multi-split outdoor units of central air conditioners of various brands mostly use a dual duct system. As the core component of the duct system, the main function of the collector is to accelerate the airflow when the fan and impeller are running, and to establish a uniform velocity field and pressure field in front of the fan inlet to reduce flow losses and improve fan efficiency. The excellence of the collector directly determines the performance difference of the duct system. The existing collector is mainly divided into three parts: the inlet end, the straight end, and the outlet end (such as Figure 1 As shown in the figure, the inlet of the existing collector is circular, and the ratio of the cross-sectional area of ​​the inlet end to the cross-sectional area of ​​the stabilizing end is generally about 1.1-1.2:1, while the whole load heat exchanger is generally square (such as Figure 2 As shown in the figure, the four corners where the collector and the heat exchanger are in contact are prone to generate a large number of eddies, which can easily cause large losses in the airflow during its movement, thus affecting the overall efficiency of the air duct system and the energy efficiency of the whole machine. When the air duct system is running, the airflow is prone to chaos due to the poor connection between the collector and the heat exchanger. The chaotic airflow has different degrees of low-frequency pulsating abnormal sounds, which are low-frequency characteristics and can easily make people feel irritated. It also causes a large noise in the air supply of the whole machine. Utility Model Content

[0003] In order to solve the problems of the existing collectors mentioned in the above background technology that affect the efficiency of the air duct system and have noise, the utility model provides a high-efficiency collector.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an efficient current collector, comprising an inlet end, a voltage stabilizing end, and an outlet end, the inlet end comprising a first straight section, a contraction section, and a second straight section, the cross section of the first straight section is a rounded rectangle, the cross section of the second straight section is a circle, the second straight section is connected to the voltage stabilizing end, the cross section of the voltage stabilizing end is a circle, and the cross section of the outlet end is a circle.

[0005] Preferably, the ratio of the cross-sectional area of ​​the first straight section at the inlet end to the cross-sectional area of ​​the voltage stabilizing end is 1.3-1.5:1.

[0006] Preferably, the ratio of the inlet end height H1 in the axial direction to the collector height H is 0.5-0.7:1.

[0007] Preferably, the ratio of the voltage stabilizing end height H2 in the axial direction to the collector height H is: 0.2-0.3:1.

[0008] Preferably, the ratio of the outlet end height H3 in the axial direction to the collector height H is: 0.075--0.15:1.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The collector of the present application is mainly used in the outdoor unit of multi-split air conditioner and dual-duct and multi-duct systems, especially the model with multiple wind wheels running in parallel. During the operation, the exchange uniformity of the heat exchanger close to the collector is greatly improved, the flow of airflow is improved, and the airflow loss is reduced. Since the airflow uniformity is effectively controlled, the noise can be effectively reduced compared with the original solution. At the same air volume, the noise is reduced by more than 2 decibels compared with the conventional solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a top view of a current collector in the prior art;

[0012] Figure 2 is a cross-sectional view of a current collector in the prior art;

[0013] Figure 3 It is a three-dimensional structural diagram of the current collector of the utility model;

[0014] Figure 4 It is a cross-sectional view of the current collector of the utility model;

[0015] Figure 5 It is a top view of the current collector of the utility model.

[0016] In the figure: inlet end 1, pressure stabilizing end 2, outlet end 3, first straight section 11, contraction section 12, second straight section 13. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 3-5The utility model provides the following technical solutions: an efficient current collector, comprising an inlet end 1, a voltage stabilizing end 2, and an outlet end 3, wherein the inlet end 1 comprises a first straight section 11, a contraction section 12, and a second straight section 13, wherein the cross section of the first straight section 11 is a rounded rectangle, the contraction section 12 is a transition section from the first straight section 11 to the second straight section 13, and the cross section transitions from a rounded rectangle to a circle, the cross section of the second straight section 12 is a circle, the second straight section 13 is connected to the voltage stabilizing end 2, the cross section of the voltage stabilizing end 2 is a circle, and the cross section of the outlet end 3 is a circle.

[0019] As a preferred implementation of this embodiment, the ratio of the cross-sectional area of ​​the first straight section 11 of the inlet end 1 to the cross-sectional area of ​​the voltage stabilizing end 2 is 1.3-1.5:1.

[0020] As a preferred implementation of this embodiment, the ratio of the height H1 of the inlet end 1 in the axial direction to the height H of the collector is: 0.5--0.7:1.

[0021] As a preferred implementation of this embodiment, the ratio of the height H2 of the voltage stabilizing end 2 in the axial direction to the height H of the current collector is: 0.2-0.3:1.

[0022] As a preferred implementation of this embodiment, the ratio of the height H3 of the outlet port 3 in the axial direction to the height H of the collector is: 0.075--0.15:1.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient current collector, characterized by: It includes an inlet end, a voltage-stabilizing end, and an outlet end. The inlet end includes a first straight section, a contraction section, and a second straight section. The cross section of the first straight section is a rounded rectangle, the cross section of the second straight section is a circle, the second straight section is connected to the voltage-stabilizing end, the cross section of the voltage-stabilizing end is a circle, and the cross section of the outlet end is a circle.

2. The efficient current collector according to claim 1, characterized in that: The ratio of the cross-sectional area of ​​the first straight section at the inlet end to the cross-sectional area of ​​the voltage stabilizing end is 1.3-1.5:

1.

3. The efficient current collector according to claim 1, characterized in that: The ratio of the inlet end height H1 in the axial direction to the collector height H is 0.5-0.7:

1.

4. The efficient current collector according to claim 1, characterized in that: The ratio of the voltage stabilizing end height H2 in the axial direction to the collector height H is 0.2-0.3:

1.

5. The efficient current collector according to claim 1, characterized in that: The ratio of the outlet end height H3 in the axial direction to the collector height H is: 0.075--0.15:1.

Images