Attached air supply mechanism and fan coil air supply device

Abstract

The attached air supply mechanism comprises a cuboid shell, a first flow guide plate and a second flow guide plate which are of the same structure are arranged between a set of opposite faces of the shell, the first flow guide plate is fixedly arranged on one set of adjacent side faces, and the second flow guide plate is fixedly arranged on the other set of adjacent side faces. And the other group of adjacent side surfaces between the first flow guide plate and the second flow guide plate are respectively an air outlet and an air inlet. Through reasonable arrangement of the component structure and change of the airflow direction, the air outlet of the fan coil achieves the effect of downward air supply in an attached mode, energy dissipation caused by change of the airflow direction is greatly reduced, and compared with a fan coil connected with a traditional elbow, resistance is reduced by 73%-89%.

Description

Technical Field

[0001] The utility model belongs to the technical field of air-conditioning air supply, and in particular relates to an attached air supply mechanism and a fan coil air supply device. Background Art

[0002] Efficient ventilation technology is an important means and a key link to reduce building carbon emissions and achieve my country's dual carbon goals. The purpose of mechanical ventilation is to achieve the required temperature field, velocity field, concentration field, etc. indoors through the interaction of organized artificial air supply jets with disturbed airflows generated by human activities, industrial production processes, and thermal convection. In ventilation and air-conditioning engineering, indoor airflow distribution can be divided into two flow types: jet control and thermal control. The jet control type achieves the homogenization of indoor parameters by fully mixing the jet with the surrounding free fluid, which is called mixed ventilation. The thermal control type conforms to the characteristics of heat dissipation to form a thermal stratified structure to improve energy utilization efficiency. Thermal buoyancy becomes the main factor affecting air movement, which is called displacement ventilation. Through comparative analysis of the mechanisms of the above two ventilation modes, Professor Li Angui of Xi'an University of Architecture and Technology proposed an attached ventilation mode, that is, the air supply jet with high momentum moves downward along the wall, turns horizontal after hitting the ground, sticks to the ground and extends forward along the ground in a radial flow manner, forming an air lake distribution similar to displacement ventilation in the control area (or working area), thereby improving energy utilization efficiency and indoor air quality.

[0003] Fan coil units are widely used in ventilation and air conditioning systems. However, traditional fan coil units do not provide attached ventilation, which can lead to severe uneven heating and cooling in rooms in winter. In summer, a larger air volume is required to meet the indoor cooling load. Summary of the Invention

[0004] In view of the above problems, the purpose of this utility model is to provide an attached air supply mechanism and a fan coil air supply device to solve the problem of uneven heating and cooling in the room in winter and the need for a larger air supply volume to meet the indoor cooling load in summer.

[0005] To achieve the above-mentioned purpose, the technical solutions adopted by the present invention include:

[0006] An attached air supply mechanism includes an outer shell that is a rectangular parallelepiped as a whole, and a first guide plate and a second guide plate with the same structure are provided between a group of opposite surfaces of the outer shell. The first guide plate is fixed on a group of adjacent side surfaces, and the second guide plate is fixed on another group of adjacent side surfaces, and the other group of adjacent side surfaces between the first guide plate and the second guide plate are respectively an air outlet and an air inlet.

[0007] Preferably, the first guide plate and the second guide plate are both arc plates with the same structure, and the center lines of the first guide plate and the second guide plate coincide with each other and are mirror-symmetrical along the center lines.

[0008] Preferably, the second guide plate is parallel to the two connecting edges of another set of adjacent side surfaces and the distance between them is D. The distance between the midpoint of the second guide plate and the intersection line of another set of adjacent side surfaces is R. The height of the opposite surface of the outer shell is H. The R / D value is 0.67-0.73, and the D / H value is 0.69-0.71.

[0009] Preferably, the R / D value is 0.71 and the D / H value is 0.7.

[0010] Preferably, one set of opposing faces of the housing is square.

[0011] A fan coil air supply device includes a fan coil and the attached air supply mechanism disclosed in the present application. The air supply port of the fan coil matches and is connected to the air inlet structure, and the air outlet is vertically downward.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] (1) The attached air supply mechanism and fan coil air supply device of the present invention change the direction of the air flow by rationally arranging the component structure, so that the air outlet of the fan coil can achieve the effect of attaching and supplying air downward, which greatly reduces the energy dissipation caused by changing the direction of the air flow. Compared with the fan coil connected to the traditional elbow, the resistance is reduced by 73%-89%.

[0014] (2) The attached air supply mechanism of the present invention is designed to be rectangular through reasonable arrangement of component structures, which is convenient for processing and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a structural diagram of the attached air supply mechanism of the present utility model;

[0017] Figure 2 for Figure 1 Forward cross-section;

[0018] Figure 3 This is a structural diagram of a fan coil air supply device.

[0019] The numbers in the figure represent:

[0020] 1. First guide plate, 2. Second guide plate, 3. Casing, 4. Air outlet, 5. Air inlet, 6. Fan coil unit. DETAILED DESCRIPTION

[0021] The utility model is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the utility model.

[0022] It should be noted that the directional terms mentioned in this article are consistent with the specific directions on the paper in the drawings of the specification or the corresponding directions in the space shown in the drawings; all components and equipment in this utility model, unless otherwise specified, are all components and equipment known in the prior art.

[0023] Example 1

[0024] This embodiment discloses an attached air supply mechanism, comprising a housing 3 in the form of a rectangular parallelepiped. A first deflector plate 1 and a second deflector plate 2 having identical structures are provided between a set of opposing surfaces of the housing 3. The first deflector plate 1 is fixedly mounted on one set of adjacent side surfaces, and the second deflector plate 2 is fixedly mounted on another set of adjacent side surfaces. The other set of adjacent side surfaces between the first deflector plate 1 and the second deflector plate 2 respectively defines an air outlet 4 and an air inlet 5.

[0025] Its function is: when it is applied to a fan coil air supply device, the air outlet 4 is directed toward the ground to achieve uniform air supply, change the direction of the air flow, and reduce energy dissipation.

[0026] The housing 3 disclosed in this embodiment is rectangular for ease of processing and installation, and one set of opposing faces of the housing 3 is square. The first and second deflectors 1 and 2 are both structurally identical curved plates, with their midlines coinciding and mirror-symmetrical along their midlines. The second deflector 2 is parallel to the two connecting edges of the other set of adjacent side faces, with a distance D between them. The distance from the midpoint of the second deflector 2 to the intersection of the other set of adjacent side faces is R. The height of the opposing faces of the housing 3 is H, with R / D values ​​ranging from 0.67 to 0.73 and D / H values ​​ranging from 0.69 to 0.71. This significantly reduces energy dissipation caused by changing airflow direction, achieving a 73% to 88% drag reduction compared to fan coil units with conventional elbows.

[0027] In this embodiment, the optimal value of R / D is 0.71, the optimal value of D / H is 0.7, and the drag reduction rate is as high as 88.4%.

[0028] Example 2

[0029] This embodiment discloses a fan coil air supply device, including a fan coil 6, characterized in that it also includes the attached air supply mechanism disclosed in Example 1, the air supply port of the fan coil 6 matches and is connected to the air inlet 5, and the air outlet 4 is vertically downward;

[0030] Its functions are as follows: the air inlet 5 and the air outlet of the fan coil 6 are the same size to ensure that there is no air leakage and the normal operation of the fan coil 6 is not affected; the overall direction of the airflow is changed so that the air outlet of the fan coil can achieve the effect of supplying air downward, which greatly reduces the energy dissipation caused by changing the direction of the airflow. Compared with the fan coil connected with a traditional elbow, the resistance is reduced by 73%-89%.

[0031] The fan coil unit 6 disclosed in this embodiment is a horizontal ultra-thin fan coil unit.

[0032] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0033] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0034] In addition, the various different implementation methods disclosed in this solution can also be arbitrarily combined, as long as they do not violate the ideas of this disclosure, they should also be regarded as the contents of the invention of this disclosure.

Claims

1. An attached air supply mechanism, characterized in that: The invention comprises a shell (3) which is a rectangular parallelepiped as a whole, wherein a first guide plate (1) and a second guide plate (2) having the same structure are provided between a group of opposite surfaces of the shell (3), the first guide plate (1) is fixed on a group of adjacent side surfaces, the second guide plate (2) is fixed on another group of adjacent side surfaces, and the other group of adjacent side surfaces between the first guide plate (1) and the second guide plate (2) are respectively an air outlet (4) and an air inlet (5).

2. The attached air supply mechanism according to claim 1, characterized in that: The first guide plate (1) and the second guide plate (2) are both arc plates with the same structure, and the center lines of the first guide plate (1) and the second guide plate (2) coincide with each other and are mirror-symmetrical along the center lines.

3. The attached air supply mechanism according to claim 2, characterized in that: The second guide plate (2) is respectively parallel to the two connecting edges of another set of adjacent side surfaces and the distance therebetween is D. The distance from the midpoint of the second guide plate (2) to the intersection line of the other set of adjacent side surfaces is R. The height of the opposite surface of the outer shell (3) is H. The R / D value is 0.67-0.73, and the D / H value is 0.69-0.

71.

4. The attached air supply mechanism according to claim 3, characterized in that: The R / D value is 0.71, and the D / H value is 0.

7.

5. The attached air supply mechanism according to any one of claims 1 to 4, characterized in that: A set of opposite faces of the housing (3) are square.

6. A fan coil air supply device, comprising a fan coil (6), characterized in that: It also includes an attached air supply mechanism as described in any one of claims 1 to 5, wherein the air supply port of the fan coil unit (6) matches and is connected to the air inlet (5) structure, and the air outlet (4) is vertically downward.

Images