Venturi tube chilled beam
By designing the Venturi tube cooling beam and using the combined structure of the Venturi tube and nozzle, the indoor air is induced to heat exchange, solving the problems of low comfort and cooling efficiency of traditional air conditioning systems, achieving a more efficient and comfortable refrigeration effect, and reducing initial investment costs.
Patent Information
- Application Number
- CN202421934909.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-12
AI Technical Summary
The existing household central air conditioning system has comfort problems, including strong sense of blowing, high noise, no fresh air, troublesome maintenance and high cost. Traditional cold beams do not have water trays, which are prone to condensation and damage to the ceiling. The high water supply temperature leads to small refrigeration volume, large number of configurations, and high cost.
A venturi pipe cold beam is designed, including a cabinet, a return air perforated plate, a venturi pipe, a heat exchange coil, a nozzle, a primary air inlet and a air supply port. A cold water supply pipe interface, a condensate pipe interface and a cold water return pipe interface are installed at the side end of the cabinet. The venturi pipe is equipped with a high-speed jet of the nozzle. The air flow is emitted through the nozzle, which generates a negative pressure area to induce indoor air to heat exchange and then mix and feed into the room.
The air induced through the venturi tube can only be the cold air after heat exchange through the heat exchange coil, which greatly increases the induction ratio and the cooling capacity of the equipment, reduces noise and initial investment costs, avoids the accumulation of condensate water, and improves the comfort and cooling efficiency of the cold beams.
Smart Images
Figure CN223036509U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cold beam equipment, and specifically refers to a Venturi tube cold beam. Background Art
[0002] The existing household central air conditioning systems mainly have two major forms: variable refrigerant flow multi-split air conditioning systems (abbreviated as multi-split units) and air source heat pump two-pipe systems. The terminals of both systems are fan coils with fan motors. The disadvantages are strong blowing feeling, high noise, no fresh air, troublesome maintenance and high cost.
[0003] Traditional cold beams do not have a condensate pan and require dew point detectors for control. Once out of control, condensate will be generated, causing damage to the ceiling. Moreover, due to high supply water temperature and small cooling capacity, a large number of terminals need to be configured, resulting in high costs. Content of the Utility Model
[0004] In order to solve the comfort problems existing in traditional household central air conditioners, make the air conditioning system healthier, more comfortable and user-friendly, and at the same time minimize the initial investment, the utility model provides a Venturi tube cold beam.
[0005] In order to achieve the above functions, the technical solution adopted by the utility model is as follows: a Venturi tube cold beam, including a casing, on which a return air perforated ceiling is provided, a Venturi tube and a heat exchange coil are installed inside the casing, a nozzle is provided on the Venturi tube, and a primary air inlet and an air supply outlet are provided at the side end of the casing.
[0006] As a preferred technical solution of the utility model, a cold water supply pipe interface, a condensate pipe interface and a cold water return pipe interface are provided at the side end of the casing.
[0007] As a preferred technical solution of the utility model, a condensate water pan is provided inside the casing.
[0008] As a preferred technical solution of the utility model, lifting lugs are provided at the four corners of the top of the casing.
[0009] Compared with the prior art, the utility model adopts the above structure and achieves the following beneficial effects:
[0010] 1. The processed primary air is sent to the primary air inlet of the cold beam under the conditions of constant air volume and relatively low static pressure, and then ejected at high speed through the nozzles of the Venturi tube inside the cold beam. According to the Venturi effect, a negative pressure area is generated inside the nozzle outlet by the high-speed air flow passing through the nozzles, thus inducing the indoor air to pass through the heat exchange coil for heat exchange and then mix with the primary air after passing through the return air perforated ceiling, and then be sent into the room through the air outlet. Since the induction area is designed as a closed structure, the air induced by the Venturi tube can only be the cold air after heat exchange through the heat exchange coil, greatly increasing the induction ratio and the cooling capacity of the equipment. For an ordinary cold beam, there is an open area from the nozzle to the air outlet, and the air blown out by the nozzle will quickly spread and form a turbulent flow when colliding with the upper and lower casings, which not only affects the air volume of the air outlet but also the induced air volume. The heat exchange coil and the equipment top plate form an angle of 10°, and the fins are hydrophilic fins, ensuring that the condensed water flows quickly along the fins into the water collecting tray and will not accumulate on the fins to affect the heat exchange efficiency. In summer, the supply and return water temperatures of the cold beam are 7°C / 12°C, which can greatly improve the cooling capacity of the cold beam. At the same time, due to the presence of the water collecting tray, there is no need to worry about the generation of condensed water, and the condensed water is discharged through the drain holes of the water collecting tray. The cold beam has no fan motor, with extremely low noise; the air supply is gentle, and the indoor temperature distribution is more uniform;
[0011] 2. Since the heat exchange coil of the cold beam has a large cooling capacity and the primary air only plays the role of inducing the return air and does not need to fully bear the indoor moisture load, the primary air volume can be reduced, the diameter of the primary air duct can be reduced, the height of the indoor pipe laying is reduced, the construction difficulty is lowered, it can be better coordinated with the decoration, and at the same time, the initial investment cost of the air duct is reduced;
[0012] 3. Due to the low supply water temperature and the large cooling capacity of the cold beam, the number of cold beams configured is greatly reduced compared with traditional cold beams. At the same time, since there is no need to consider the problem of condensed water and no dew point detector is required, the system control is simpler, the later maintenance is reduced, the hidden danger of condensed water is eliminated, and the initial investment is greatly reduced. Description of the Drawings
[0013] Figure 1 The left sectional view of a Venturi tube cold beam proposed by the present utility model;
[0014] Figure 2 The right sectional view of a Venturi tube cold beam proposed by the present utility model;
[0015] Figure 3 The bottom view of a Venturi tube cold beam proposed by the present utility model;
[0016] Figure 4 The front view of a Venturi tube cold beam proposed by the present utility model;
[0017] Figure 5 The top view of a Venturi tube cold beam proposed by the present utility model.
[0018] Among them, 1. housing, 2. return air perforated ceiling, 3. Venturi tube, 4. heat exchange coil, 5. nozzle, 6. primary air inlet, 7. air supply outlet, 8. cold water supply pipe interface, 9. condensate pipe interface, 10. cold water return pipe interface, 11. condensate water sump, 12. lifting lug. Specific embodiments
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance. The following will further describe the present utility model in detail with reference to the accompanying drawings.
[0021] As Figures 1-5 shown, a Venturi tube cold beam provided by the present utility model includes a housing 1, a return air perforated ceiling 2 is arranged on the housing 1, a Venturi tube 3 and a heat exchange coil 4 are installed in the housing 1, a nozzle 5 is arranged on the Venturi tube 3, a primary air inlet 6 and an air supply outlet 7 are arranged at the side end of the housing 1, and the processed primary air is sent to the primary air inlet 6 of the cold beam under the conditions of constant air volume and relatively low static pressure, and then is ejected at a high speed through the nozzle 5 of the Venturi tube 3 inside the cold beam. According to the Venturi effect, a negative pressure area is generated inside the outlet of the nozzle 5 by the high-speed air flow passing through the nozzle 5, thereby inducing indoor air to pass through the heat exchange coil 4 after heat exchange from the return air perforated ceiling 2 and mix with the primary air, and then is sent into the room through the air outlet. Since the induction area is designed as a closed structure, the air induced by the Venturi tube 3 can only be the cold air after heat exchange through the heat exchange coil 4, greatly increasing the induction ratio and the cooling capacity of the equipment.
[0022] As Figures 1-5 shown, a cold water supply pipe interface 8, a condensate pipe interface 9 and a cold water return pipe interface 10 are arranged at the side end of the housing 1, a condensate water sump 11 is arranged inside the housing 1, and lifting lugs 12 are arranged at the four corners of the top of the housing 1.
[0023] The above description is about the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present utility model, design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.
Claims
1. A venturi tube chilled beam, comprising a housing (1), characterized in that: The casing (1) is provided with a return air perforated plate (2), a venturi tube (3) and a heat exchange coil (4) are installed in the casing (1), a nozzle (5) is provided on the venturi tube (3), and a primary air inlet (6) and an air supply port (7) are provided at the side end of the casing (1).
2. A venturi tube chilled beam according to claim 1, characterized in that: The side end of the casing (1) is provided with a cold water supply pipe interface (8), a condensed water pipe interface (9) and a cold water return pipe interface (10).
3. A venturi tube chilled beam according to claim 1, characterized in that: A condensed water collection tray (11) is arranged inside the casing (1).
4. The venturi tube chilled beam according to claim 1, characterized in that: Lifting ears (12) are provided at the four corners of the top of the casing (1).