CN2596866Y - Seat air supply diffuser with pressure equalizer - Google Patents

Abstract

A chair blowing-in and current dispersing device with an average pressure device relates to a dispersing device which is used on the fixing chair for chair blowing-in in the cinema and showplace, the gymnasium and the reading room, etc. The utility model is provided with an average pressure device in the original chair blowing-in and current dispersing device, the average pressure device presents a cylinder-shaped structure with small holes on the surface, and a cavum is positioned between the average pressure device and the current dispersing device, the cavum plays the role of a secondary hydrostatic pressure case. the non-uniformity dynamical pressure can be converted into the uniformity hydrostatic pressure in space after the wind is blown in through the cavum, thus making the wind speed blow out of the current dispersing device uniformity without any changes along the height direction, so as to solve the problems effectively of that, the wind speed of the current dispersing device is non-uniformity along the height direction in the wind blowing-in under the chair, thus enhancing the warm comfort for the seating people.

Description

Seat air supply diffuser with pressure equalizer

technical field

The utility model relates to a ventilation device, in particular to a diffuser used in air supply for seats with fixed seats such as movie theaters, gymnasiums and reading rooms.

Background technique

The air supply under the seat is a kind of displacement ventilation, which is a new type of ventilation method used in places with fixed seats such as theaters, gymnasiums and reading rooms in recent years. The air supply under the seat is to send fresh air below the room temperature from the bottom of the room. Due to the heating effect of heat sources such as personnel equipment, the fresh air is heated up and takes away the heat and pollutants in the room. Exhaust from the return air outlet at the position. Compared with the general top-supply and top-return hybrid ventilation, the seat air supply can provide better air quality in the breathing area of the personnel, and at the same time, it is more energy-efficient due to the formation of the upper and lower temperature distribution of the space. The existing air supply diffuser under the seat is generally combined with the seat, and the diffuser not only acts as an air outlet but also acts as a chair support. The diffuser is cylindrical or square and has a certain height. Its wind speed is very uneven along the height direction, and the bottom is low and the top is high. Under a certain amount of air supply, due to the excessive local air velocity of the diffuser, the occupants often feel a feeling of blowing. The air outlet speed of the diffuser affects the thermal comfort of personnel, and the air outlet speed of the same diffuser is determined by the air supply volume. In order to ensure the thermal comfort of personnel, the air supply volume is often reduced, which may not meet the load requirements.

Utility model content

The purpose of this utility model is to provide a new air supply diffuser for seats, which can solve the problem that the air output speed of the diffuser is not uniform along the height direction in the air supply under the seat, thereby further improving the thermal comfort of the seated personnel sex.

The purpose of this utility model is achieved through the following technical solutions:

A seat air supply diffuser with a pressure equalizer, including the diffuser, is characterized in that: a pressure equalizer is arranged in the diffuser, and the pressure equalizer is a cylindrical shape with small holes on the surface structure, and leave a cavity between the diffuser.

The pressure equalizer adopts a conical barrel or a cylindrical barrel.

In the utility model, a pressure equalizer is arranged inside the original air supply diffuser, and the cavity between the pressure equalizer and the diffuser acts as a secondary static pressure box. After the air supply passes through the cavity, it will The uneven dynamic pressure is converted into a relatively uniform static pressure in space, so that the wind speed flowing out of the diffuser has little change along the height direction of the diffuser, and is relatively uniform, thus effectively solving the problem of air supply under the seat. The problem of uneven wind speed along the height direction of the diffuser further improves the thermal comfort of the seated occupants.

Description of drawings

Fig. 1 is a structural schematic diagram of a seat air supply diffuser with a built-in conical barrel pressure equalizer provided by the utility model.

Fig. 2 is an appearance view of a seat air supply diffuser with a conical pressure equalizer.

Fig. 3 is a comparative diagram of distribution of diffuser outlet air velocity along the height direction when the air supply volume is 50m ³ /h, using the conical barrel pressure equalizer shown in Fig. 1 and no pressure equalizer.

Fig. 4 is a comparative diagram of the distribution of air velocity along the height direction of the outflow of the diffuser when the air supply volume is 100m ³ /h, using the conical barrel pressure equalizer shown in Fig. 1 and no pressure equalizer.

Detailed ways

The seat air supply diffuser provided by the utility model is to set a pressure equalizer 1 in the original diffuser 4. The pressure equalizer adopts a cylindrical structure, preferably a conical cylinder or a cylindrical cylinder, and has a groove on its surface. Multiple small holes 2. There should be a certain cavity 3 between the pressure equalizer and the diffuser. The air sent from the static pressure box or air duct at the bottom of the seat first reaches the pressure equalizer 1, flows out from the small hole 2 of the pressure equalizer 1, enters the cavity 3 formed by the pressure equalizer 1 and the diffuser, and then Diffuser 4 flows out. In fluid flow, static pressure and dynamic pressure can be converted to each other, and the cavity between the pressure equalizer and the diffuser acts as a secondary static pressure box, and the uneven dynamic pressure is converted after the air supply passes through the cavity. A relatively uniform static pressure in space is formed, so that the wind speed flowing out from the diffuser is almost consistent along the height direction of the diffuser.

Example:

The pressure equalizer adopts a conical cylinder structure. Under the same air supply volume, the maximum outflow wind speed of the diffuser with a pressure equalizer is much lower than that of a diffuser without a pressure equalizer. For example, when the air supply volume is 50m ³ /h, the maximum outflow wind speed of the diffuser without pressure equalizer is 2.6m/s, the minimum outflow wind speed is 0.25m/s, and the wind speed increases with the increase of height. big. However, the maximum outflow wind speed of the diffuser with a pressure equalizer is 0.46m/s, and the minimum outflow wind speed is 0.35m/s, and the wind speed hardly changes with the height direction, which is relatively uniform (see Figure 3). When the air supply volume is 100m ³ /h, the maximum outflow wind speed of the diffuser without pressure equalizer is 5.7m/s, the minimum outflow wind speed is 0.5m/s, and the wind speed increases with the increase of height. However, the maximum outflow wind speed of the diffuser with a pressure equalizer is 1.5m/s, and the minimum outflow wind speed is 0.4m/s. The wind speed increases slightly with the increase of height, but it is still not large (see Figure 4) . Therefore, the seat air supply diffuser with a pressure equalizer also ensures the thermal comfort requirements of the seated occupants on the premise of meeting the load requirements.

Claims (2)

1. A seat air-supply diffuser with a pressure equalizer, comprising a diffuser, characterized in that: a pressure equalizer is set in the diffuser, and the pressure equalizer has small holes on the surface Cylindrical structure with a cavity between the diffuser and the diffuser. 2. The seat air supply diffuser according to claim 1, wherein the pressure equalizer adopts a conical cylinder or a cylindrical cylinder.

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