CN217337765U - Combined type station air conditioner desk - Google Patents

Abstract

The utility model provides a combined type station air conditioner desk, including the orifice plate wind gap, the orifice plate wind gap sets up the left and right sides at the desk baffle respectively to be connected with the static pressure case, static pressure case and supply-air duct interface connection, the radiation plate setting is provided with radiation plate power port on the radiation plate on the desk is to two desk baffles of human body. The utility model discloses the air supply can effectual reduction respiratory zone pollutant's concentration, and the air quality is better.

Description

Combined type station air conditioner desk

Technical Field

The utility model relates to a human travelling comfort research, air conditioning technology field specifically are a combined type station air conditioner office table.

Background

The radiation plate heating is a technical method for heating rooms by means of radiation heat exchange between a heating component and the surface of an enclosure structure. The radiant panel heating has the outstanding advantages of uniform indoor temperature distribution, high comfort, low energy consumption and the like. However, the radiant panel heating can only do heat radiation and cannot provide fresh air, and the requirement of indoor personnel on good air quality cannot be met. The station air supply can directly supply the processed air to the working post so as to improve the air supply efficiency and the air quality of the working area. The radiant panel heating and station air supply are combined for use, the maximum advantages of respective systems can be utilized, and the system is energy-saving and healthy.

The station air conditioner can be divided into the following parts according to different air supply modes: floor station air conditioners, desktop station air conditioners, partition plate station air conditioners and ceiling station air conditioners. The air supply mode of the desktop station air conditioner can be divided into: vertical desktop grille VDG (vertical Desk grid), horizontal desktop grille HDG (horizontal Desk grid), movable tuyere MP (movable Panel), computer Monitor tuyere CMP (computer Monitor Panel) and personal environment unit (PEM personal Environments Module), wherein the positions of the air supply are shown in FIG. 1. The air flow organization of the air supply modes of different stations is completely different, and the influence on indoor personnel is also greatly different. Therefore, the study on the combination of the desktop station air supply and the radiant panel heating in different modes has important significance.

The following is introduced in the document "study on indoor thermal environment and thermal comfort of desktop air conditioning system" (Lei Mulin. study on indoor thermal environment and thermal comfort of desktop air conditioning system [ D ]. Dalian: university of graduate, 2007.): personal environment unit (PEM) provided by Johnson Controls Inc (see fig. 2). Air is introduced from a self-powered mixing box hung under a desk and is sent out from two air diffusers on the desktop through a flexible pipe, and the air quantity and direction of air supply can be adjusted by workers. A200W heat radiation plate is installed under the table.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a travelling comfort is better, temperature gradient is little, the moderate and effectual combined type station air conditioner of reduction respiratory zone pollutant concentration of sense of blowing.

The purpose of the utility model is realized like this:

the utility model provides a combined type station air conditioner desk, characterized by: including the orifice plate wind gap, the orifice plate wind gap sets up the left and right sides at the desk baffle respectively to be connected with the static pressure case, static pressure case and supply-air duct interface connection, the radiation plate sets up on the desk is to two desk baffles of human body, is provided with radiation plate power port on the radiation plate.

Further, the orifice plate wind gap is installed in the left and right sides that keeps off through installing the slide rail recess.

Furthermore, the pore plate air port is provided with 3 guide plates, and the area of each guide plate is uniformly increased.

Furthermore, the slide rail bump is arranged on the orifice plate air port, and the slide rail can be freely assembled and disassembled along the slide rail groove arranged on the orifice plate air port.

Further, a background air supply air valve is installed on the orifice plate air port.

Furthermore, a background air supply port is installed on the orifice plate air port, and the background air supply port is in an arc-shaped conformal design.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) PMV is distributed evenly, temperature gradient is small, and comfort is better;

(2) the feeling of blowing (DR) is small.

Drawings

FIG. 1 is a three-dimensional view of a combined station air-conditioning desk of the present invention;

FIG. 2 is a cross-sectional view of a composite station air-conditioning desk of the present invention;

FIG. 3 is a diagram of a desk frame;

FIG. 4 is a front view of a composite station air conditioning desk of the present invention;

FIG. 5 is a three-dimensional view of a perforated plate tuyere;

FIG. 6 is a sectional view of a perforated plate tuyere;

FIG. 7 is a partial view of a perforated plate tuyere;

FIG. 8 is a plenum box;

FIG. 9 is a diagram of a simulation model of an orifice plate tuyere;

FIG. 10 is a diagram of a grid tuyere simulation model;

fig. 11 is a diagram of baffle position;

FIG. 12 is a velocity cloud;

FIG. 13 scenario S1 partial trace diagram;

FIG. 14 is a PMV cloud;

FIG. 15 is a temperature measurement point location diagram;

FIG. 16 is a plot of the temperature of the measurement points;

FIG. 17 is a diagram of head and foot temperature differences;

FIG. 18 is a plot of wind velocity;

FIG. 19 is a plot of blowing sensation;

FIG. 20 is a model diagram of an air flow organization evaluation;

FIG. 21 is a graph of the analytic hierarchy process scores.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

This combined type station air conditioner desk includes: 1. a baffle plate; 2. an orifice plate tuyere; 2a, an air inlet valve; 2b, a guide plate; 2c, a background air supply air valve; 2d, a background air supply port; 2e, mounting a slide rail lug at the hole plate air port; 3. a radiation plate; 4. a slide rail groove is arranged at the orifice plate air port; 5. the static pressure box is provided with a slide rail lug; 6. a static pressure box; 7. an air supply pipe interface; 8, mounting a slide rail groove on the static pressure box; 9. a radiating plate power port.

Fresh air is treated by the air conditioning box and then is delivered to an air delivery pipeline interface 7 by an air delivery pipe, after air is delivered into a static pressure box 6 for pressure stabilization, the air is blown out by a pore plate air port 2, a radiation plate 3 is laid on an upper desk baffle plate and a lower desk baffle plate which are right opposite to a human body, the power port of the radiation plate is 9, and the left side and the right side of the radiation plate are the desk baffle plates 1. 4 and 8 are respectively an orifice plate air port and a static pressure box mounting slide rail groove.

In winter, the background air supply air valve is closed, and the orifice plate air port only realizes the function of providing fresh air. The air inlet air valve 2a can adjust the amount of wind, and 2b is the guide plate, and the area of every guide plate evenly increases, through simulation and comprehensive evaluation, reachs when being equipped with 3 guide plates that it is felt and the thermal comfort is more excellent. And 2e is a slide rail bump arranged at the orifice plate tuyere and can be freely assembled and disassembled along the slide rail groove 4 arranged at the orifice plate tuyere.

In summer, the opening of the background air supply air valve 2c can be adjusted according to needs, so that fresh air required by a human body can be provided, and air can be supplied to a background area. In order to avoid short circuit of air supply of the orifice plate air port, the background air supply air valve 2c is arranged on one side of the guide plate, the area of the air valve is small, the opening degree is adjustable, and the background air supply air port 2d is in an arc-shaped conformal design.

Face down the utility model provides an air current distribution when combined type station air conditioner desk adopts different number guide plate schemes carries out the analog analysis, and then finds suitable design. Five air supply schemes to be compared are shown in table 1 and fig. 11.

The working condition in winter is simulated, the background air supply air valve 2c is in a closed state, and the boundary conditions are set as follows: the wall surface is heat-insulated, the human body load is 80W, the air supply temperature is 22 ℃, and the air supply quantity is 50m ³ And h, two radiation plates are arranged opposite to the human body, and the surface temperature of each radiation plate is set to be 22 ℃.

TABLE 1 protocol numbering

The simulation results of the five schemes are shown in fig. 12-19. A velocity cloud was created just in front of the orifice plate tuyeres of scenarios S1-S4, as shown in fig. 12.

As can be seen from fig. 12, the velocity of the perforated plate tuyere without the guide plate is higher at the upper side of the tuyere and lower at the lower side, and the velocity stratification phenomenon is serious; after the guide plates are added, the velocity distribution is relatively uniform, wherein the velocity distribution of 2 guide plates is similar to that of 3 guide plates. It can be visually seen from the trace diagram 15 that in the case of the solution S1, the air blow is almost entirely blown out through the upper side of the tuyere, and therefore, a severe velocity stratification phenomenon is exhibited.

As can be seen from the PMV (predicted mean volume) cloud picture, the PMV distribution of the scheme S3 is relatively uniform, and the human body feels relatively comfortable; the solutions S2, S4 and S5 have obvious phenomena that the upper half body is cold and the lower half body is hot; regimen S1 the heat sensation was a warming sensation throughout the body. The sequence of the five schemes from good to bad is respectively as follows: s3, S4, S5, S2, S1.

As shown in FIG. 15, the distances from each measuring point to the ground are respectively 0.15m, 0.6m, 0.9m and 1.1m (corresponding to the ankle, knee, chest and head heights of the human body).

As can be seen from FIG. 16, the working conditions with the baffles have similar temperature variation trends, the head and chest temperatures are close, and the ankle temperature is highest. As can be seen from the head and foot temperature difference diagram 17, when two guide plates are arranged, the head and foot temperature difference is 4.3 ℃ at most; the temperature difference between the head and the foot of the working condition with 4 guide plates and the working condition of the grid air opening is close to 3 ℃; when 3 guide plates are arranged, the temperature difference between the head and the foot is 1 ℃ at minimum. The sequence from superior to inferior of the five schemes is respectively as follows: s3, S1, S4, S5, S2.

According to the wind speed line graph 18, the wind speed of the grid tuyere corresponding to the face, the neck and the shoulders of the human body is the maximum compared with other schemes, and the wind speed is about 0.2 m/s; the wind speed of each part of the human body is between 0 and 0.12m/s in other schemes. According to the blowing feeling line graph 19, the blowing feeling is consistent with the distribution trend of the wind speed, and the blowing feeling of the grid air port corresponding to the neck and the shoulder of the human body is B level; the blowing feeling corresponding to each pore plate air opening is A level. The facial blowing feelings of the five schemes are all in A level, so the neck blowing feelings are used for judging the advantages and disadvantages of the schemes, and the sequences of the schemes from the advantages to the disadvantages are respectively as follows: s1, S2, S3, S4, S5.

The air flow organization of 5 schemes S1-S5 is evaluated by using an analytic hierarchy process, the analytic hierarchy process can divide elements related to decision into targets, criteria and schemes, wherein the target is an optimal scheme of the air flow organization, PMV, a blowing feeling and a temperature gradient are evaluation criteria of the air flow organization, and the 5 schemes are schemes to be evaluated. The air flow texture evaluation model is shown in fig. 20.

For the disadvantages of the prior art, we attach more importance to thermal comfort, and the feelings of blowing of the schemes 1-4 are all class A, which are not very different, so that PMV is more important than the feelings of blowing for the objective evaluation. By constructing a judgment matrix and carrying out judgment matrix consistency test, the weights of PMV, the blowing feeling and the temperature gradient are respectively as follows: 0.538961,0.297258,0.163781. Comparing the evaluation indexes of the schemes with each other according to the calculation result, and obtaining the final weight scores of the schemes S1-S5 as follows: 0.197606, 0.140596,0.33786,0.197659,0.126278. The weight ordering of the various schemes can be seen more clearly by the histogram 21. Scheme S3 is the best of the orifice plate and air opening combined type station air-conditioning desk with three guide plates.

Claims (6)

1. The utility model provides a combined type station air conditioner desk, characterized by: including orifice plate wind gap (2), orifice plate wind gap (2) set up respectively in the left and right sides of desk baffle (1) to be connected with static pressure case (6), static pressure case (6) are connected with supply air duct interface (7), and first radiation board (3) set up on the desk is to two desk baffles of human body, are provided with radiation board power port (9) on second radiation board (5).

2. A combined type station air-conditioning desk as claimed in claim 1, wherein said orifice plate tuyere (2) is installed at the left and right sides of the desk baffle (1) through the installation slide groove (4).

3. A combined type station air-conditioning desk as claimed in claim 1, wherein said orifice plate tuyere (2) is provided with 3 flow deflectors (2b) whose area is uniformly increased.

4. A combined type station air-conditioning desk as claimed in claim 1, wherein said perforated plate tuyere (2) is mounted with a sliding rail projection (2e) which can be freely mounted and dismounted along the perforated plate tuyere mounting sliding rail groove (4).

5. A combined station air conditioning desk as claimed in claim 1, said orifice plate tuyere (2) having a background supply air valve (2c) mounted thereon.

6. The combined type station air-conditioning desk as claimed in claim 1, wherein a background air supply port (2d) is installed on the orifice plate air port (2), and the background air supply port (2d) is in an arc-shaped conformal design.

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