Adjustable constant air volume valve

Abstract

The utility model relates to the technical field of ventilation and air conditioning systems, in particular to an adjustable constant air volume valve, which is characterized in that a wire control shaft is arranged in a shaft hole of a central control box, and a plurality of wire control blocks are arranged on the wire control shaft by penetrating through the shaft hole; the control piece ropes are erected on the line control block and located on the two sides of the semicircular face of the line control block respectively to extend downwards, transverse ropes with the same distance and the same length are arranged between the two strands of control piece ropes on the two sides of the line control block, and the overall structure of each control piece rope is of a vertically-downward continuous ladder-shaped structure. Rope passing holes with the same number and the same distance as the rope control blocks are formed in the middle line part of the air blocking piece, and the air blocking piece is arranged on the transverse rope of the control piece rope; the upper end of the central rope is connected with the bottom of the central control box, and extends downwards to the bottom plate through a rope passing hole of a wind shield middle wire; the upper ends of the side plates are connected with the lower part of the side edge of the central control box, and the lower ends of the side plates are connected with the bottom plate; and the electric control knob is arranged on one side of the wire control shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation and air conditioning systems, in particular to an adjustable constant air volume valve. Background Art

[0002] In recent years, with the gradual improvement of the requirements for air-conditioning energy saving and comfort worldwide, the transformation and upgrading of traditional manual variable air volume terminals have gradually been favored by industry insiders. However, for some application places, since the air volume required in the room is constant or the air volume change requirement range is very small, it is too luxurious to still use traditional variable air volume terminals at this time. On the one hand, the use of ordinary air valves cannot play the role of constant air volume, and the system pressure is difficult to control, which brings great difficulties to design and debugging. On the other hand, there is no variable air volume function, which cannot meet the air-conditioning energy saving and user comfort requirements. Utility Model Content

[0003] In view of the above technical problems, the utility model provides an adjustable constant air volume valve to solve the problems that the system pressure of the traditional air volume valve is difficult to control and cannot play the role of constant air volume, and cannot meet the air conditioning energy saving and user comfort requirements.

[0004] The utility model is realized by the following technical solutions:

[0005] An adjustable constant air volume valve comprises: a central control box, a control line shaft, a control line block, a control sheet rope, a wind shield sheet, a central rope, a bottom plate, a side plate, an electric control knob, a positioning block, and a sheet guard strip;

[0006] The central control box is a rectangular box body with an upper cover plate, and a through-axis hole is set in the center of the side surface. The function of the axis hole can support the control wire shaft in the central control box; the control wire shaft is set in the axis hole of the central control box, and both ends extend out of the central control box, and the axis head extending out of the central control box is used to install the electric control knob; the control wire block is a rectangular block with a through-axis hole, and the two sides are semicircular. The semicircular shape can increase the contact area and prevent the control piece rope from being worn. Multiple control wire blocks are set on the control wire shaft through the through-axis holes, and the number of control wire blocks increases according to the increase of the width of the overall air volume valve; the control piece rope is a metal flexible rope, which can ensure the strength and wear resistance while having the flexibility of the rope. The control piece rope is laid on the control wire block, and is respectively located on both sides of the semicircular surface of the control wire block and extends downward to the lower part of the last wind shield piece. A horizontal rope with the same spacing and the same length is set between the two control piece ropes on both sides of the control wire block. The function of the horizontal rope is to catch each piece. The wind shield piece keeps the same spacing between the wind shield pieces. The overall structure of the control piece rope is a ladder-like structure that is continuous vertically downward, and the spacing between the horizontal ropes is less than or equal to half the width of the wind shield piece; the wind shield piece is a rectangular sheet structure, and the center line part is provided with rope holes with the same number and spacing as the control line block. The wind shield piece is arranged above the horizontal rope of the control piece rope, and the number of wind shield pieces is consistent with the number of horizontal ropes of the control piece rope; the center rope is a metal soft wire rope, the upper end of which is connected to the bottom of the central control box, and extends downward to the bottom plate through the rope hole on the center line of the wind shield piece to the bottom plate, connected to the bottom plate, passing through the top and bottom, positioning the wind shield piece so that the front and back sides do not shift; the bottom plate is a rectangular sheet structure, located at the bottom of the whole; the side panels are rectangular sheet structures, arranged on both sides of the wind shield piece, the upper end is connected to the lower part of the side of the central control box, and the lower end is connected to the bottom plate. The central control box, the left and right side panels and the bottom plate together form a stable external frame of the air volume valve; the electric control knob is arranged on one side of the control line shaft.

[0007] Preferably, a bearing is provided at the through-axis hole of the central control box, and the control line shaft is installed in cooperation with the central control box through the bearing, and the left and right rotation adjustability of the control line shaft is achieved by the bearing.

[0008] Preferably, the wire control block disposed on the wire control shaft rotates coaxially with the wire control shaft.

[0009] Preferably, the control sheet rope on the control line block is ensured not to slide randomly, the control sheet rope is overlapped on the control line block, and a positioning block 0 is provided above the control line block to position the control sheet ropes on both sides of the control line block to prevent the control sheet rope from changing position.

[0010] Preferably, the width of the side panels is greater than that of the windshield to protect the windshield, and the side panels are provided with guard strips toward the windshield to not only protect the windshield but also block the side wind between the windshield and the side panels.

[0011] Preferably, the electric control knob can be arranged at any one end of the control shaft.

[0012] Beneficial effects: This solution adopts a multi-blade unified control method to avoid uneven air flow, and can evenly control the air volume to keep the air pressure at each outlet relatively consistent. It has high control accuracy, is conducive to the balance of air supply and exhaust, the balance of system air volume, and greatly reduces the workload of debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of the main body of the utility model;

[0015] Figure 2 It is a schematic cross-sectional view of the entire main body of the utility model.

[0016] In the figure: central control box 1, control line shaft 2, control line block 3, control sheet rope 4, wind shield 5, center rope 6, bottom plate 7, side plate 8, electric control knob 9, positioning block 10, guard sheet strip 11. 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] The central control box 1 is a rectangular box body with an upper cover plate, and a through-axis hole is set in the center of the side, and the function of the axis hole can support the control line shaft 2 in the central control box 1; the control line shaft 2 is set in the axis hole of the central control box 1, and both ends extend out of the central control box 1, and the axis head extending out of the central control box 1 is installed for the control knob 9; the control line block 3 is a rectangular block with a through-axis hole, and the two sides are semicircular, which can increase the contact area and prevent the control piece rope 4 from being worn. Multiple control line blocks 3 pass through the through-axis holes The cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 3 is a kind of metal rope, and the cam 5 extends downward from the rope hole of the center line to the bottom plate 7, connected to the bottom plate 7, passing through the top and bottom, positioning the wind shield 5 so that the front and back sides do not shift; the bottom plate 7 is a rectangular sheet structure, located at the bottom of the whole; the side plate 8 is a rectangular sheet structure, arranged on both sides of the wind shield 5, the upper end is connected to the lower part of the side of the central control box 1, and the lower end is connected to the bottom plate 7. The central control box 1, the left and right side plates 8 and the bottom plate 7 together form a stable external frame of the air volume valve; the electric control knob 9 is arranged on one side of the control line shaft 2.

[0019] Furthermore, a bearing is provided at the through-axis hole of the central control box 1, and the control wire shaft 2 is installed in cooperation with the central control box 1 through the bearing, and the left and right rotation adjustability of the control wire shaft 2 is achieved by the bearing.

[0020] Furthermore, the wire control block 3 disposed on the wire control shaft 2 rotates coaxially with the wire control shaft 2 .

[0021] Furthermore, to ensure that the control sheet rope 4 on the control line block 3 does not slide at will, the control sheet rope 4 is overlapped on the control line block 3, and a positioning block 10 is provided above the control line block 3 to position the control sheet rope 4 on both sides of the control line block 3 to prevent the control sheet rope 4 from changing position.

[0022] Furthermore, the width of the side panel 8 is greater than that of the windshield 5 , thereby protecting the windshield 5 , and a guard strip 11 is provided on the side panel 8 toward the windshield 5 , which not only protects the windshield 5 , but also blocks the side wind between the windshield 5 and the side panel 8 .

[0023] Furthermore, the electric control knob 9 can be arranged at any one end of the control shaft 2 .

[0024] Working steps: When the air volume valve needs to be closed in the open state, the electric control knob 9 is started, the outer control rope 4 rises, the inner control rope 4 falls, and the wind shield 5 is driven from the parallel state to the vertical state, so that multiple wind shields 5 are overlapped to form a wind shield as a whole to play a wind shielding role, and the center rope 6 plays a supporting role to prevent the wind shield 5 from displacement and air leakage. When the air volume valve needs to be opened in the closed state, the electric control knob 9 is started, the outer control rope 4 falls, the inner control rope 4 rises, and the wind shield 5 is driven from the vertical state to the parallel state, so that multiple wind shields 5 form a wind shield as a whole to separate and expose gaps, so as to achieve ventilation effect, and the opening size of the electric control knob 9 controls the opening size of the wind shield 5 to achieve the purpose of controlling the air volume, and the center rope 6 plays a supporting role to prevent the wind shield 5 from displacement.

Claims

1. An adjustable constant air volume valve, comprising: A central control box (1), a control line shaft (2), a control line block (3), a control sheet rope (4), a wind shield (5), a center rope (6), a bottom plate (7), a side plate (8), and an electric control knob (9), characterized in that the central control box (1) is a rectangular box body with an upper cover plate, and a through-axis hole is arranged in the center of the side surface; the control line shaft (2) is arranged in the axis hole of the central control box (1), and both ends extend out of the central control box (1); the control line block (3) is a rectangular block body with a through-axis hole, and the two sides are semicircular, and a plurality of control line blocks (3) are arranged on the control line shaft (2) through the through-axis holes; the control sheet rope (4) is a metal flexible wire rope, and the control sheet rope (4) is traversed on the control line block (3), and is respectively located on both sides of the semicircular surface of the control line block (3) and extends downward, and the two strands of the control sheet rope (4) on both sides of the control line block (3) are provided with the same spacing and the same spacing. The horizontal ropes are of the same length, and the overall structure of the control sheet rope (4) is a ladder-like structure that is continuous vertically downward; the wind shield (5) is a rectangular sheet-like structure, and the middle line portion is provided with rope holes with the same number and the same spacing as the control line block (3); the wind shield (5) is arranged above the horizontal rope of the control sheet rope (4), and the number of the wind shield (5) is the same as the number of the horizontal ropes of the control sheet rope (4); the center rope (6) is a metal soft wire rope, the upper end of which is connected to the bottom of the central control box (1), and extends downward to the bottom plate (7) through the rope hole in the middle line of the wind shield (5); the bottom plate (7) is a rectangular sheet-like structure and is located at the bottom end of the whole; the side plate (8) is a rectangular sheet-like structure, which is arranged on both sides of the wind shield (5), the upper end of which is connected to the lower part of the side of the central control box (1), and the lower end is connected to the bottom plate (7); the electric control knob (9) is arranged on one side of the control line shaft (2).

2. The adjustable constant air volume valve according to claim 1, characterized in that: A bearing is provided at the through-axis hole of the central control box (1), and the control line shaft (2) is mounted in cooperation with the central control box (1) via the bearing.

3. The adjustable constant air volume valve according to claim 1, characterized in that: A line control block (3) arranged on the line control shaft (2) rotates coaxially with the line control shaft (2).

4. The adjustable constant air volume valve according to claim 1, characterized in that: The control sheet rope (4) is overlapped on the control line block (3), and a positioning block (10) is provided above the control line block (3) to position the control sheet rope (4) located on both sides of the control line block (3) to prevent the control sheet rope (4) from changing position.

5. The adjustable constant air volume valve according to claim 1, characterized in that: The width of the side plate (8) is greater than the width of the wind shield (5), and a guard strip (11) is provided on the side plate (8) in the direction of the wind shield (5).

6. The adjustable constant air volume valve according to claim 1, characterized in that: The electric control knob (9) can be arranged at any one end of the control line shaft (2).

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