CN115095942A - A two-way flow whole house fresh air system with toilet in the room - Google Patents

Abstract

The invention provides a bidirectional flow whole-house fresh air system with toilets in rooms, which is used for a room group, wherein the room group comprises at least one first room with the toilets in the inside and a public space communicated with the first room; the first room comprises a room body and a toilet communicated with the room body; whole house new trend system includes: the fresh air module is used for sending outside fresh air into a public space; the air exhaust module is used for sucking and exhausting the dirty air in the room group to the outside of the room group; the room fresh air inlet is used for sending fresh air in the public space into the room body; the toilet vent is used for discharging the dirty air in the room body into the toilet; the toilet air return pipe is connected with the air exhaust module and used for exhausting the dirty air in the toilet; the air return inlet of the air return pipe of the toilet is positioned in the toilet; the relay fan is arranged in the room body, and the distance between the room fresh air port and the air suction port of the relay fan is smaller than the distance between the room fresh air port and the toilet ventilation port.

Description

A two-way flow whole house fresh air system with toilet in the room

technical field

The invention belongs to a building ventilation system, in particular to a two-way flow whole-house fresh air system with a toilet in a room.

Background technique

Air is the life element that every living human being cannot leave every quarter of an hour; we depend on air more than all other life elements, including food and water. We spend most of our lives in dwellings, essentially living in the indoor secondary air environment enclosed by the walls and floors of the dwelling. Carbon dioxide and excrement produced by human metabolism, oil fumes from cooking in the kitchen, water vapor from bathing, benzene and formaldehyde from interior decoration materials, etc., lead to indoor air pollution, which will make people's houses ventilated and improve indoor air quality. The huge demand for the quality of the living environment has been released.

Our living space needs continuous and stable high-quality fresh air replacement, but residential ventilation does not mean opening doors and windows. In winter and summer when quality indicators such as air temperature and humidity deviate from normal values, in climatic periods such as haze days, windy days, Huinan days, and plum rainy seasons, in windless periods when the atmosphere is in a static and stable state, and the virus is rampant, it is necessary to increase indoor During the epidemic prevention period of ventilation volume, we all need mechanical ventilation equipment to centrally filter, cool down and dehumidify (heating and heat up) the fresh air, input fresh air airflow with suitable temperature, humidity, cleanliness and freshness, and improve the quality of the secondary environment inside the casing. Realize the living ideal of "originating from nature above nature".

However, in order to meet the needs of residential fresh air, the simplified version of the "fresh air system" assembled on new buildings is mostly an air supply fan module plus a PVC air supply pipe on the ceiling to connect each room, which is a cecal type. The "one-way flow" does not have the actual effect of "two-way flow" of synchronous operation of fresh air pressurized feeding and dirty air negative pressure collection and discharge; because now the doors and windows are processed with high precision, the air tightness is very good, and there is no room When the doors and windows are opened, the dirty air will not be exhausted, and the fresh air will not be sent in. The cecum-type one-way flow fresh air system in the current real estate deviates from the basic principles of "three-stage" and "two-way flow" of ventilation, resulting in the inability of the room's dirty air to be discharged, the fresh air to be sent in, and the inner wall of the fresh air supply duct. Condensation adheres to dust bacteria and microorganisms and becomes a secondary pollution problem for the culture medium.

In fact, in the process of residential design and construction, the interior walls, exterior walls and doors and windows divide the originally spacious and open complete residential space into multiple functional units such as living room, bedroom, study, kitchen, bathroom, storage room, etc. These functional space units Not only is it difficult to achieve natural ventilation with the outdoor environment, but even forced ventilation is difficult to operate.

The structure of Chinese residential buildings is different from that of European and American villas; the basic attributes of low-rise, multiple interior walls, and small unit space are the starting points for the design of residential mechanical ventilation systems in China: under the current floor height of 3000mm, it is impossible to install fresh air in and dirty air out. It is not commercially possible to increase the floor height by 300mm to 3300mm and reduce the building area by 10%; and, because of the addition of two sets of two-way air supply and exhaust pipes, the addition of fresh air modules, exhaust modules, and two sets of decoration The additional ceiling area due to pipelines is also difficult to digest.

At the same time, in the overall planning and design of the residential fresh air system, it is not only necessary to solve the problem of residential fresh air replacement to improve the quality of the secondary environment in the suite, but also to pay attention to the energy consumption of the ventilation project itself and the energy consumption of air conditioning directly related to the replacement of fresh air, ventilation and air conditioning. Energy consumption has become the main body of building energy consumption.

my country's building energy consumption (about 1 billion tons of standard coal equivalent in the whole year) has accounted for 22% of the total social energy consumption, which is tied with industrial energy consumption and transportation energy consumption, and has become the "Three Musketeers" of total social energy consumption; And due to the improvement of residents' living conditions and urban renewal, building energy consumption and its proportion will further increase, becoming the focus of carbon neutralization in my country and the world.

In recent years, building energy-saving technologies have developed extremely rapidly, diversified and numerous, but they can all be classified into three types: building material energy saving, equipment process energy saving and building structure energy saving:

①Energy saving of building materials, such as the use of hollow bricks and foamed cement bricks to build walls, and the use of rock wool boards and polyurethane foam boards to pave the outer walls of buildings, etc., all of which are made of hollow bricks, foamed cement bricks, rock wool, The thermal insulation performance of the polyurethane foam board can block the heat transfer inside and outside the wall to reduce building energy consumption;

②Equipment and process energy saving. For example, the residential air conditioner adopts the independent temperature and humidity adjustment method, and the indoor temperature is appropriately increased under the condition of reducing the indoor relative humidity to maintain the somatosensory comfort, so as to reduce the indoor and outdoor temperature difference, reduce heat leakage and air conditioning energy consumption; use heat pump hot water unit +Large area of ground and wall capillary radiant heating, reducing water temperature and improving heat pump heating energy efficiency; building vertical lifting system adopts intelligent elevator driven by variable frequency motor, etc., all of which are achieved by improving the technical process of optimizing residential energy equipment to achieve residential technological energy saving ;

③ Structural energy saving, such as the use of heat-dissipating bridge aluminum alloy doors and windows, and embedding heat-insulating nylon connectors between the inner and outer aluminum alloy frames to block heat conduction between the inner and outer aluminum alloy frames; reducing point-type housing and vigorously promoting strip-type housing Residential structure design, reducing the external wall area and specific surface area of residential buildings, in order to reduce the intensity of energy exchange inside and outside the residence and reduce energy consumption, etc., are all through the optimization of building structure or building parts structure to achieve building structural energy conservation;

Among the above three types of building energy-saving technologies, the first type of building material energy-saving technologies such as wall insulation and insulating glass have been widely used and achieved excellent technical results. The space is already very small; the second type of residential energy equipment is technologically energy-saving and the technology is relatively complex. After the hard work of Chinese engineers, residential energy equipment such as elevators, air conditioners, water heaters, stoves and cooking utensils, as representatives of "Made in China", are energy-saving. The level has been world-class; the third type of structural energy saving, through the optimization of the building structure to reduce the external wall area and specific surface area of the residential building, and through the optimization of the spatial relationship of the building parts to reduce the heat transfer temperature difference between indoor and outdoor, to achieve the structural energy saving of the building, and also There is a lot of room for improvement.

Starting from the basic attributes of low-rise, multiple interior walls, and small unit spaces of Chinese residential buildings, it focuses on the path of fresh air replacement, power, efficiency, and ventilation and building energy conservation issues. Optimizing and effectively solving the two major problems of fresh air replacement and building energy saving is a major mission and arduous task for our real estate industry, architectural design industry, and fresh air and air conditioning industry.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides a two-way flow whole house fresh air system with a toilet in a room, which is used for a room group, and the room group includes at least one first room with a built-in toilet and communication with the first room. The public space; the first room includes a room body and a toilet communicated with the room body; the two-way flow whole-house fresh air system includes:

The fresh air module is arranged on the room group, and is used for sending outside fresh air into the public space;

an air exhaust module, which is arranged on the room group and is used for suctioning and discharging the dirty air in the room group to the outside of the room group;

The fresh air outlet of the room is opened on the enclosure structure of the room body, and is used for sending the fresh air of the public space into the room body;

a toilet vent, which is opened on the enclosure structure of the toilet, and is used to discharge the dirty air in the room body into the toilet;

The bathroom air return duct is connected to the air exhaust module, and is used to discharge the dirty air in the toilet to the outside of the room group; the air return port of the toilet air return duct is located in the toilet;

A relay fan is arranged in the room body, and the distance between the fresh air outlet of the room and the air suction port of the relay fan is smaller than the distance between the fresh air outlet of the room and the ventilation port of the bathroom;

During the fresh air replacement operation of the first room, under the action of the relay fan, the fresh air entering the room body from the fresh air outlet of the room enters the relay fan through the air suction port of the relay fan, and then flows from the air outlet of the relay fan. The air outlet of the relay fan is discharged at a high speed, which promotes the air flow in the room body and the replacement of fresh air. The dirty air in the room body enters the bathroom from the bathroom vent, and then returns through the bathroom in turn. Ducts and exhaust modules are exhausted to the outside of the room group.

Preferably, the fresh air module is arranged in the public space, and is used to directly send outside fresh air into the public space.

Preferably, the room group further includes a second room, and the second room communicates with the public space;

The fresh air module is arranged in the second room, and the enclosure structure of the second room is provided with a room air outlet; during operation, the fresh air module sends the outside fresh air into the second room first, and then passes through The room exhaust is sent into the public space.

Preferably, the fresh air module includes an air intake booster device, a header and a fresh air fan coil connected in sequence, the header communicates with the intake air boost device and the fresh air fan coil, and the intake air The booster device communicates with the outside atmosphere; the air inlet booster device is provided with an air intake fan; the fresh air fan coil is arranged on the outer wall of the public space or the second room or a position close to the outer wall.

Preferably, an air distribution orifice plate is arranged in the header, and the air distribution orifice plate is located between the air inlet and the air outlet of the header.

Preferably, the air exhaust module includes a central air duct and an air exhaust fan, and the toilet return air duct is connected to the central air duct; the central air duct is connected to the exhaust fan through at least one rear air duct. The air suction port of the exhaust fan is connected with the outside atmosphere.

Preferably, a room fan coil unit is arranged on the outer wall of the room body or at a position close to the outer wall. When the room fan coil unit circulates, under the action of the fan of the room fan coil unit, the The air in the room body enters the room fan coil unit from the air suction port of the room fan coil unit, and is discharged into the room body through the air outlet of the room fan coil unit.

Preferably, the air outlet of the room fan coil unit is provided with a lateral guide plate for controlling the left and right swing of the air outlet direction and a longitudinal guide plate for controlling the up and down swing of the air outlet direction.

Preferably, the fresh air outlet of the room is arranged on the wall of the room body, on the head of the door of the room body, or on the door leaf of the door of the room body.

Preferably, the toilet vent is arranged on the wall of the toilet, on the head of the toilet door or on the door leaf of the toilet door.

Preferably, the fresh air vent of the room is arranged on the upper part of the door leaf of the door of the room body, and the bathroom vent is arranged on the lower part of the door leaf of the toilet door.

Preferably, a first damper is provided on the fresh air outlet of the room.

Preferably, the first damper is an electric damper, which includes an electric drive device and a sliding blade, the electric drive device is provided with a retractable push rod, the sliding blade is connected with the push rod, and the electric drive The device drives the sliding sheet to open or close the fresh air vent of the room through the push rod.

Preferably, first grilles are provided on both sides of the fresh air outlet of the room, and the first grille includes a number of first grille bars arranged in parallel from top to bottom in sequence, and the first grille bars are arranged from top to bottom. Slope from inside to outside.

Preferably, the toilet vent is provided with a second damper.

Preferably, second grilles are provided on both sides of the toilet vent, and the second grille includes a plurality of second grilles arranged in parallel from top to bottom, and the second grilles are arranged from top to bottom. Slope from inside to outside.

Preferably, the relay fan, the return air outlet of the bathroom return air duct and the room fan coil are all arranged in the ceiling, and the suction outlet of the relay fan, the return air outlet of the bathroom return air duct and The air suction ports of the room fan coil units are all set downward.

Compared with the prior art, the present invention has the following technical effects:

1. High-efficiency fresh air replacement without blind spots

The present invention is a two-way flow whole-house fresh air system with a toilet in a room. The exhaust module, the relay fan, the fresh air outlet in the room and the bathroom vent are activated synchronously, and the exhaust module sucks the dirty air in the room through the return air outlet of the return air duct of the bathroom. The primary negative pressure, the relay fan runs, its air suction port generates a lower secondary negative pressure, the fresh air from the fresh air outlet is introduced into the relay fan by the secondary negative pressure, and after being boosted by the relay fan, it is shot to the outer wall side and then reflected by the outer wall. Backflow, enters the bathroom from the bathroom vent, and is discharged through the return air outlet of the bathroom return air duct. The relay fan plays the key role of the "gravitational slingshot" of "introduction-boost-ejection" of fresh air in the fresh air replacement of the room; one negative pressure, two The secondary negative pressure and the gravitational slingshot jointly promote the movement of the fresh air in the room, and continuously press and drive the dirty air to be transported to the outdoors through the return air outlet of the bathroom return air duct, so as to achieve high-efficiency fresh air replacement in the room without blind spots.

2. Reduce building energy consumption

The present invention is a two-way flow whole-house fresh air system with a toilet in a room. The heat exchange intensity Q=K×S×⊿T is obtained by analyzing the heat flow process inside and outside the building, that is, the heat exchange intensity Q inside and outside the building and the external heat exchange intensity Q=K×S×⊿T are obtained. The total heat transfer coefficient K of the wall, the area S of the outer wall, and the temperature difference ⊿T between the inner and outer walls of the outer wall are proportional, and the complexity of the mathematical structure of K and the complexity of the operation process do not change the simple proportional relationship between Q and ⊿T; The fan coil unit in the room is installed adjacent to the outer wall. When the room circulates, the temperature field structure of the room is changed so that the temperature inside the outer wall increases in summer, decreases in winter, and approaches the outer wall in winter and summer. Outside temperature, the structural transformation of the room temperature field reduces the temperature difference ⊿T between the inside and outside of the exterior wall, thereby reducing the heat exchange intensity Q inside and outside the building, thereby reducing building energy consumption;

Of course, it is not necessary for any product embodying the present invention to achieve all of the above-described advantages simultaneously.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained from these drawings without any creative effort. In the attached picture:

1 is a schematic structural diagram of a two-way flow whole-house fresh air system with a toilet in a room provided by preferred embodiment 1 of the present invention;

Fig. 2 is the operation diagram of a two-way flow whole-house fresh air system provided with a toilet in a room provided by the preferred embodiment 1 of the present invention;

3 is a schematic structural diagram of the first room fresh air provided by the preferred embodiment 1 of the present invention;

Fig. 4 is the fresh air replacement operation diagram of the first room fresh air system provided by the preferred embodiment 1 of the present invention;

5 is a schematic structural diagram of an electric damper provided by a preferred embodiment of the present invention;

6 is a schematic structural diagram of a two-way flow whole-house fresh air system provided with a toilet in a room provided by the preferred embodiment 2 of the present invention;

Fig. 7 is the operation diagram of a two-way flow whole-house fresh air system provided with a toilet in a room provided by the preferred embodiment 2 of the present invention;

8 is a schematic structural diagram of the first room fresh air provided by the room fan coil unit adjacent to the outer wall provided by the preferred embodiment 2 of the present invention;

Fig. 9 is the fresh air replacement operation diagram of the first room fresh air system provided by the room fan coil unit adjacent to the outer wall provided by the preferred embodiment 2 of the present invention;

FIG. 10 is a diagram of the internal circulation operation of the first room fresh air system provided by the room fan coil unit adjacent to the outer wall provided by the preferred embodiment 2 of the present invention;

Figure 11 is a schematic diagram of the three-stage heat input from the ambient atmosphere (left side) to the indoor air (right side) through the outer wall in summer;

Figure 12 shows the room airflow velocity field and temperature field of the traditional room fan coil set in the deep part of the room (the length of the airflow arrow is proportional to the size of the airflow velocity there, and the gradual change of the temperature at each point on the airflow line reflects the operation mode under this operating mode. room temperature field);

13 is the airflow velocity field and temperature field of the first room under the condition that the room fan coil unit provided by the preferred embodiment 2 of the present invention is adjacent to the outer wall (the length of the airflow arrow is proportional to the size of the airflow velocity there, and each The gradual change of the point temperature reflects the room temperature field in this operating mode);

FIG. 14 is a schematic structural diagram of a fresh air module with an air distribution orifice plate provided by the preferred embodiment 3 of the present invention.

Detailed ways

The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the inventive concept. These all belong to the protection scope of the present invention.

Example 1

Please refer to FIG. 1 to FIG. 4 , a two-way flow whole-house fresh air system with a toilet in a room is used for a room group, and the room group includes at least one first room 4 with a built-in toilet and a room 4 with the first room 4 Connected public space 7; the first room 4 includes a room body 41 and a toilet 42; the two-way flow whole-house fresh air system includes:

The fresh air module 1 is arranged on the room group, and is used to send the outside fresh air into the public space 7;

The air exhaust module 2 is arranged on the room group, and is used to suction and discharge the dirty air in the room group to the outside of the room group;

The room fresh air outlet 411 is opened on the enclosure structure of the room body 41, and is used to send the fresh air of the public space 7 into the room body 41;

The toilet vent 421 is opened on the enclosure structure of the toilet 42, and is used to discharge the dirty air in the room body 41 into the toilet 42;

The toilet air return duct 3 is connected to the exhaust module 2 and is used to discharge the dirty space in the toilet 42 to the outside of the room group; the air return port 31 of the toilet air return duct 3 is located in the toilet 42 and away from toilet vent 421;

The relay fan 5 is arranged in the room body 41, and the distance between the fresh air outlet 411 of the room and the suction port of the relay fan 5 is smaller than the distance between the fresh air outlet 411 of the room and the bathroom vent 421. distance.

The fresh air module 1 can directly or indirectly send the outside fresh air into the public space 7:

As an embodiment of directly ventilating fresh air, the fresh air module 1 is arranged in the public space 7 and is used to directly send the outside fresh air into the public space 7 . When the whole house fresh air system is running, the outside fresh air first enters the public space 7 through the fresh air module 1, and then enters the room body 41 of the first room 4 through the fresh air vents 411 of each room. Under the action, the fresh air entering from the fresh air outlet 411 of the room first enters the relay fan 5 through the air suction port of the relay fan 5, and is discharged at a high speed through the air outlet of the relay fan 5, pushing the air in the room body 41. Air flow and fresh air replacement, the dirty air in the room body 41 enters the toilet 42 from the toilet vent 421, and then is discharged to the outside of the room group through the toilet return air duct 3 and the exhaust module 2 in sequence.

As an embodiment of indirect fresh air ventilation, the room group further includes a second room, which communicates with the public space 7; the fresh air module 1 is arranged in the second room, and the enclosure structure of the second room is A room air outlet is provided on it; during operation, the fresh air module 1 sends the outside fresh air into the second room first, and then sends it into the public space 7 through the room air outlet. When the whole-house fresh air system is running, the outside fresh air first enters the second room through the fresh air module 1, then enters the public space 7 through the room exhaust port of the second room, and then enters the first room 4 through the fresh air ports 411 of each room. Under the action of the fan of the relay fan 5 in the room body 41, the fresh air entering from the fresh air outlet 411 of the room first enters the relay fan 5 through the suction port of the relay fan 5, and passes through the The exhaust port of the relay fan 5 is discharged at a high speed, which promotes the air flow in the room body 41 and the replacement of fresh air. The dirty air in the room body 41 enters the bathroom 42 from the bathroom vent 421, and then returns to the air through the bathroom in turn. The duct 3 and the exhaust module 2 are discharged to the outside of the room group.

The fresh air module 1 and the air exhaust module 2 belong to mature technologies in the art, which are not specifically limited in this embodiment, for example, they may be fans, fan coil units, and the like. In this embodiment, a general air inlet is provided on the outer wall of the public space 7 or the second room, and the fresh air module 1 is arranged on the general air inlet, and the fresh air module 1 includes a fresh air fan. A general air outlet is provided on the outer wall of any room or public space 7, and the air outlet module 2 is arranged on this air outlet, and the air outlet module 2 includes an air outlet fan.

This embodiment does not impose specific restrictions on the specific arrangement of the fresh air vent 411 in the room. The fresh air vent 411 in the room can be arranged on the wall of the room body 41 , or on the door head of the door of the room body 41 , or on the door of the room body 41 . on the door leaf 413.

A first damper may or may not be provided on the fresh air outlet 411 of the room, which may be set according to actual use requirements.

When the first air door is set on the fresh air outlet 411 of the room, the first air door can be an electric air door, a pneumatic air door, etc., which is not limited in this embodiment. If an electric air door 7 is used, please refer to FIG. Including an electric drive device 71 and a sliding piece 73, the electric drive device 71 is provided with a retractable push rod 72, the sliding piece 73 is connected with the push rod 72, and the electric drive device 71 passes through the push rod 72 The sliding blade 73 is driven to open or close the fresh air vent 411 in the room.

In this embodiment, the fresh air vent 411 of the room is preferably opened above the door leaf 413 , so the electric damper 7 is arranged in the interlayer of the door leaf 413 .

The two sides of the fresh air outlet 411 in the room are provided with a first grille 8. The first grille 8 includes a plurality of first grille bars arranged in parallel from top to bottom. The inner side is inclined to the outer side. When the sliding sheet 73 closes the room fresh air outlet 411 , the first grilles 8 on both sides of the room fresh air outlet 411 are located on both sides of the sliding sheet 73 .

This embodiment does not limit the setting position of the toilet vent 421 , and the toilet vent 421 may be arranged on the wall of the toilet 42 , on the head of the door of the toilet 42 , or on the door leaf of the door of the toilet 42 . In this embodiment, the bathroom vent 421 is preferably arranged below the door leaf of the bathroom door 42 .

The bathroom vent 421 may be provided with a second damper, or may not be provided with a second damper, which may be set according to actual use requirements. If the bathroom vent 421 is provided with a second damper, the second damper may be an electric damper, a pneumatic damper, etc., which is not limited in this embodiment, for example, the above-mentioned electric damper of the first damper may be used.

The two sides of the toilet vent 421 are provided with second grilles, the second grille includes a plurality of second grille bars arranged in parallel from top to bottom, the second grille bars are from top to bottom from the inner side to the outer side tilt.

In this embodiment, the relay fan 5 and the air return port 31 of the bathroom return air duct 3 are all arranged in the ceiling, and the air suction port of the relay fan 5 and the air return port 31 of the bathroom return air duct 3 are arranged in the ceiling. All face down. When the fresh air in the first room is running, both the first air door and the second air door are opened, the relay fan 5 is running, and the return air outlet 31 of the bathroom return air duct 3 is sucked. The fresh air 411 enters the room body 1, and is sucked by the secondary negative pressure of the air suction port of the relay fan 5, and the fresh air injected into the room body 41 through the "gravitational slingshot" of the relay fan 5 drives the dirty air in the room body 41 to pass through the room body. The bottom space of 41 is backflowed at a low position, and then flows into the toilet 42 through the toilet vent 421 at the bottom of the toilet 42 , and finally is discharged through the toilet return air duct 3 at the top of the toilet 42 .

In this embodiment, the public space 7 may be a living room, dining room, corridor, aisle, etc., or a living room, dining room, corridor, aisle, etc. with a balcony; the first room and the second room may be a living room, bedroom, study, Kitchen, bathroom, storage room, dining room, etc., or living room with balcony, bedroom, study room, kitchen, bathroom, storage room, dining room, etc.

Example 2

In this embodiment, on the basis of Embodiment 1, a room fan coil unit 6 is added in the first room. Please refer to FIGS. 6 to 10 . The room fan coil unit 6 is arranged in the room body 41 and is located in all the rooms. On or near the outer wall 412 of the room body 41, the air outlet of the room fan coil 6 faces the deep part of the room body 41, the outer wall 412 is located in the shallow part of the room body 41, and the room body 41 The depth is opposite the outer wall 412.

The outer wall 412 of this embodiment includes at least one of a solid outer wall, a hollow outer wall, a foamed material outer wall, and an outer wall provided with an outer window. When the fresh air replacement is running in the first room, the room fan coil unit 6 does not operate; when the internal circulation in the first room is executed, the room fan coil unit 6 will reverse the room temperature field constructed when the traditional fan coil unit is set close to the inner wall, forming a new The spatial structure of the room temperature field.

When the room fan coil unit 6 circulates, under the action of the fan of the room fan coil unit 6, the air in the room body 1 enters the room fan coil unit 6 from the air suction port of the room fan coil unit 6, The air is discharged into the room body 1 through the air outlet of the room fan coil 6 .

The room fan coil unit 6 is installed adjacent to the outer wall, which is based on the following building physics analysis and judgment: the energy consumption of air conditioning and heating in summer and winter is the main energy consumption of the building; and the energy consumption of air conditioning and heating is essentially due to the heat exchange inside and outside the building. ; The heat exchange inside and outside the building involves three heat exchange stages: indoor side air convection, external wall heat conduction, and outdoor side air convection, which makes the calculation and control of heat exchange inside and outside the building very complicated.

The heat exchange power between the ambient atmosphere and the indoor space Q ₁ = the total heat transfer coefficient inside and outside the exterior wall K×the surface area of the exterior wall S×the heat transfer temperature difference inside and outside the wall⊿T=K×S×⊿T;

The formula for calculating the total heat transfer coefficient K inside and outside the wall is:

Among them, α ₁ is the heat transfer coefficient of the air outside the wall, α ₂ is the heat transfer coefficient of the air inside the wall, b is the thickness of the wall, and λ is the thermal conductivity of the wall.

Referring to Figure 11, the middle part in Figure 11 is the outer wall, the left side is the external environment, and the right side is the indoor space. When the ambient air temperature is higher than the indoor temperature, the outdoor heat is transferred to the room along the three-stage relay in the heat flow direction in Figure 11:

1. The external hot air convection heat exchange area of the exterior wall

The first section is the convective heat transfer area of hot air outside the outer wall. The convective heat transfer coefficient is α ₁ . The hot air forms a laminar bottom layer F ₁ -F ₁ near the wall surface of the external wall, and the hot air flows to the laminar bottom layer through convection. F ₁ -F ₁ leak heat.

2. External wall heat conduction

The second section is the heat conduction of the wall, the thickness of the wall is b, and the thermal conductivity is λ. The heat of the bottom layer F ₁ -F ₁ of the external hot air laminar flow is conducted through the wall to the bottom layer F ₂ - F2 _;

3. Indoor cold air convection heat exchange area

The third section is the indoor cold air convection area, the convective heat transfer coefficient is α ₂ , the cold air forms a laminar flow bottom layer F ₂ -F ₂ near the inner surface of the outer wall, and the laminar flow bottom layer F ₂ -F ₂ flows through the indoor cold air convection Transfer heat leakage into the deep space of the room.

When the ambient air temperature is lower than the indoor temperature, the heat is transferred from the indoor to the outdoor in a three-stage relay along the direction of heat flow.

1. Indoor hot air convection heat exchange area

The first section is the indoor hot air convection area, the convective heat transfer coefficient is α ₂ , the hot air forms a laminar flow bottom layer F ₂ -F ₂ near the inner surface of the outer wall, and the indoor hot air passes through the convection to the laminar flow bottom layer F ₂ -F ₂ heat leakage.

2. External wall heat conduction

The second stage is the heat conduction of the wall, the thickness of the wall is b, and the thermal conductivity is λ. The heat of the indoor hot air laminar flow bottom layer F ₂ -F ₂ on the inner wall surface of the wall is conducted to the cold air laminar flow bottom layer on the outer wall surface by heat conduction. F ₁ -F ₁ ;

3. Cold air convection heat exchange area outside the outer wall

_The third section is the convective heat transfer area for the cold air outside the outer wall, and the _convective heat transfer _coefficient is α _{1 .} The leakage heat from the room is transferred to the distance through the convection of cold air.

Although the above-mentioned three-stage heat leakage process of the outdoor hot air passing through the outer wall to the room in summer or the indoor hot air passing through the outer wall to the outdoor in winter is very complicated, when Q (heat exchange intensity) = K (total heat transfer coefficient) × S In the formula of (external wall area)×⊿T (internal and external temperature difference), only the component factors and interrelationships of K are complex, and the mathematical structure and computational complexity of K do not change this “heat exchange intensity Q and external wall area S, The simple mathematical relationship that the temperature difference between the inside and outside of the outer wall is proportional to ⊿T".

In this embodiment, by changing the positioning method of the room fan coil unit 6, the traditional setting method of the room fan coil unit 6 relative to the outer wall 412 in the deep part of the room (the outer wall 412 in the first room 4 is located in the shallow part of the room, the traditional The fan coil unit 6 of the room is set away from the outer wall 412 of the room), innovatively set it to the outer wall 412 or near the outer wall 412, innovate the new structural relationship between the air conditioner and the building, change the indoor temperature field distribution, reduce the internal and external walls of the external wall. The temperature difference ⊿T, thereby reducing the indoor and outdoor heat exchange intensity Q and building energy consumption.

This embodiment takes a hotel standard guest room as an example.

In the traditional air-conditioning installation project, the room fan coil 6 is installed in the deep part of the room relative to the outer wall 412. Taking the cooling operation under the standard operating conditions of the air conditioner in summer as an example, the room fan coil 6 installed in the deep part of the room sucks 27 The room return air at about ℃ is used for cooling and dehumidification, and then the cold air of about 14℃ after cooling and dehumidification is blown to the outer wall 412 through the upper space of the room. When the outer wall 412 blocks the reflection, the cold air flow from the middle and lower part of the room flows back to the deep room fan in the room Below the coil unit 6, it is sucked into the room fan coil unit 6 again to cool down and dehumidify to start a new cycle; in the above-mentioned internal circulation process, the process of blowing out and returning the cold air flow from the room fan coil unit 6 is a process of gradually expanding the air flow cross section, and the airflow The process is that the speed gradually decays and the temperature gradually rises, and the temperature rise of the airflow mainly occurs in the process of the airflow returning from the outer wall 412 to the suction port of the fan coil unit 6 in the room, as shown in FIG. 12 .

If the ambient temperature is 32°C, the outlet air temperature of the traditional deep-set room fan coil 6 during cooling operation is 14°C, blowing to the inner side of the outer wall 412 and then vertically descending the airflow temperature is around 19°C, the return air is about 27°C, and the outside air temperature is around 27°C. The indoor and outdoor temperature difference at the wall 412 = 32-19 = 13°C, then the outdoor environment leaks into the indoor heat through the outer wall Q ₁ =K×S×⊿T ₁ =13K×S.

In this embodiment, the traditional deep room fan coil unit 6 is innovatively set to a position adjacent to the outer wall 412, creating a new structural relationship between the air conditioner and the building, the indoor temperature field changes accordingly, and the temperature difference ⊿T between the inner and outer walls of the outer wall changes accordingly. As a result, the indoor and outdoor heat exchange intensity Q and building energy consumption change accordingly, as shown in Figure 13.

The same ambient temperature is 32°C, the same room structure, in this embodiment, the room fan coil 6 disposed adjacent to the outer wall 412 has an outlet air temperature of 14°C during the cooling operation, blowing to the deep part of the room and then vertically descending airflow The temperature is around 19°C, the return air temperature at the outer wall 412 is 25°C, the temperature at the return air outlet 31 of the fan coil 6 in the room is 27°C, and the indoor and outdoor temperature difference at the outer wall 412 = 32-25 = 7°C, then the outdoor environment passes through the outside. The heat leakage into the room from the wall Q ₂ =K×S×⊿T ₂ =7K×S; compared with the deep setting of the fan coil unit in the room under the relationship of the traditional air-conditioning building structure, the heat leakage into the room is reduced (Q ₁ -Q ₂ )/ Q ₁ =(13-7)/13=46%.

The same building physics analysis comparison applies to the heating operation of the room fan coil unit in winter:

If the ambient temperature is 5°C, the outlet air temperature of the traditional deep-set room fan coil unit during heating operation is 45°C, and the temperature of the air blowing to the inside of the outer wall 412 and then vertically downward is around 35°C, the return air is about 21°C, and the outside air temperature is around 21°C. The indoor and outdoor temperature difference at the wall 412 = 35-5 = 30°C, then the indoor air leaks to the outdoor heat through the outer wall Q ₁ =K×S×⊿T ₁ =30K×S.

Under the same ambient temperature of 5°C and the same room structure, in this embodiment, the fan coil unit 6 of the room set adjacent to the outer wall 412, the outlet air temperature during heating operation is also 45°C, blowing to the deep part of the room and then The temperature of the vertical downdraft airflow is also around 35°C, the return air temperature at the outer wall 412 is 23°C, the temperature of the return air outlet 31 of the fan coil unit 6 in the room is 21°C, and the indoor and outdoor temperature difference at the outer wall 412 = 23-5 = 18°C , then the indoor air leaks to the outdoor ambient heat through the outer wall Q ₂ =K×S×⊿T ₂ =18K×S; compared with the scenario of the deep setting of the room fan coil unit under the relationship of the traditional air-conditioning building structure, the indoor heat leakage to the outdoor environment is reduced (Q ₁ -Q ₂ )/Q ₁ =(30-18)/30=40%.

In this embodiment, starting from the research and analysis of building physics, by changing the positioning method of the room fan coil, the traditional way of setting the room fan coil unit 6 relative to the outer wall 412 in the deep part of the room is innovatively set to the outer wall 412 or adjacent to the outer wall. The location of 412, the new structural relationship between the innovative air conditioner and the building, promotes the reverse phase change of the room air temperature field, reshapes the indoor temperature field distribution, and flips the room temperature field from "high inside and low outside" to "high outside and low inside" in summer. In order to reduce the temperature difference ⊿T between the inside and outside of the outer wall, the indoor and outdoor heat exchange intensity Q and building energy consumption can be reduced.

In this embodiment, the air outlet of the room fan coil unit 6 is provided with a number of transverse guide plates for controlling the left and right movement of the air outlet and a number of longitudinal guide plates for controlling the up and down movement of the air outlet. It is defined by the changing direction of the airflow guided by the deflector.

In this embodiment, the relay fan 5, the air return port 31 of the bathroom return air duct 3 and the room fan coil are all arranged in the ceiling, and the suction port of the relay fan 5, the bathroom The air return port 31 of the air return duct 3 and the air suction port of the room fan coil unit are both arranged downward.

In this embodiment, when a two-way flow whole-house fresh air system with a toilet in a room is running, the fresh air module 1, the exhaust module 2, the relay fan 5, the electric damper of the fresh air outlet 411 of the room, and the electric damper of the toilet vent 421 are activated synchronously. , the fresh air module 1 takes the living room aisle to send the fresh air to the fresh air outlet 411 of each room, the exhaust module 2 sucks the dirty air of the first room 4 to generate a primary negative pressure, and the relay fan 5 operates the air intake to generate a lower secondary negative pressure, The primary negative pressure and the secondary negative pressure jointly promote the movement of the fresh air flow in the room, and drive the dirty air from the first room to flow into the return air outlet of the bathroom return air duct 3 and output it to the outdoors through the air exhaust module 2:

① The exhaust module 2 operates in each first room 4 to extract the exhaust air to generate a negative pressure, and pulls the fresh air from the external public space 7 of the first room 4 to pass through the fresh air outlet 411 of the room, and flows in under the guidance of the grille of the fresh air outlet 411 of the room The room body 41 of the first room 4;

② The fresh air flow entering the room body 41 of the first room 4 is attracted into the relay fan 5 under the secondary negative pressure pull of the relay fan 5. The relay fan 5 plays the function of "gravitational slingshot", and the introduced fresh air is boosted and injected, and the fresh air is in the relay The lateral guide plate and the longitudinal guide plate of the air outlet of the fan 5 are guided downward and are directed towards the deep part of the room body 41 from the side of the return air outlet of the bathroom return air duct;

③ The fresh air that shoots towards the deep part of the room body is driven by the dirty air to flow into the bathroom vent;

The fresh air is pushed forward, continuously pressing and driving the dirty air to the outside through the bathroom vent 421, the return air port 31 of the bathroom return air duct 3, and the exhaust module 2, so as to achieve high-efficiency room fresh air replacement without blind spots.

The present embodiment provides a two-way flow whole-house fresh air system with a toilet in a room, based on the following judgment:

①Relay fan 5 has the function of "gravitational slingshot" for room fresh air replacement

The room fresh air replacement is the intermediate and key link of the whole house fresh air replacement; under the "primary negative pressure" generated by the exhaust air module 2 through the bathroom return air duct 3 in the room to extract the sewage air, the relay fan 5 will operate at the same time. Its suction port generates a deeper "secondary negative pressure"; based on the "secondary negative pressure", the "gravitational slingshot" function of the negative pressure of the relay fan 5 to attract fresh air and boost the fresh air is developed to organize the fresh air replacement path in the room. It is the technical key to realize high efficiency of room fouling and no blind spot clearing;

②Optimizing the spatial position of the fan coil unit in the room can reduce the heat exchange intensity inside and outside the room

When the room fan coil is used for internal circulation, an asymmetric temperature field is established inside the room. During cooling operation, the room fan coil outlet temperature is the lowest, the upper part of the room has a lower temperature, the lower part of the room is higher, and the room fan coil suction air temperature is high. The highest, the room fan coil outlet temperature is the highest during heating operation, the upper room temperature is higher, the lower room temperature is lower, and the room fan coil suction air temperature is the lowest, the spatial position of the room fan coil determines the room temperature field. Spatial characteristics, determine Intensity of heat exchange inside and outside the room; adjust the location settings of the room fan coil, optimize the spatial structure relationship between the room fan coil and the room, not only support the gravitational slingshot function of the room fan coil when the room is replaced by fresh air, but also change the room temperature field structure, Reduce the temperature difference between the inside and outside of the exterior wall during cooling in summer and heating in winter, thereby reducing the heat exchange inside and outside the room and reducing building energy consumption.

Example 3

This embodiment is further improved on the basis of Embodiment 1. In this embodiment, please refer to FIG. 14 , the fresh air module 1 includes an air inlet booster 11 , a header 12 and a fresh air fan coil 13 connected in sequence, The header 12 communicates with the intake air booster 11 and the fresh air fan coil 13, and the intake air booster 11 communicates with the outside atmosphere; the intake air booster 11 is provided with an intake fan ; The fresh air fan coil 13 is arranged in the public space 7 or in the second room.

The header 12 is a hollow structure. For example, the header 12 can be formed by 1.2-1.5mm cold-rolled sheet or aluminum sheet after punching, bending and riveting, and then riveting with two end caps. Of course, this embodiment is not limited to cold-rolled sheet and aluminum sheet. , or pipes of other materials. Since the header 12 is used to communicate the air inlet booster 11 and the fresh air fan coil unit 13 , the header 12 is provided with a second air inlet and a second air outlet.

The air inlet booster 11 includes a casing and an air inlet fan. The casing is provided with an air inlet, an air outlet, and an air inlet channel connecting the air inlet and the air outlet. The fan is arranged in the air inlet channel; the air inlet 1 of the air inlet booster device 11 is communicated with the outside atmosphere, and the air outlet 1 of the air inlet booster device 11 is connected to the air inlet 2 of the header 12. The air outlet 2 of the header 12 is communicated with the fresh air fan coil 13 .

The fresh air fan coil unit 13, that is, the room fan coil unit in a broad sense, may be a split-type fan coil unit, or a fan coil unit or an indoor unit at the end of a household central air-conditioning room. The fresh air fan coil unit 13 belongs to a mature technology in the art, and therefore, the present invention does not specifically limit the structure of the fresh air fan coil unit 13 . In this embodiment, the fresh air fan coil unit 13 includes the return air box and a fan coil unit body communicated with the return air box. The fan coil unit body includes a casing and a heat exchanger arranged in the casing. The end ports communicate with the return air box and the public space 7 or the second room, respectively. The air return box is provided with a fan assembly, the air return box is provided with an air inlet 3 and a return air outlet, the air inlet 3 is communicated with the air outlet 2 of the header 12, and the return air outlet is communicated with the public space 7 or the second room. . When the fresh air module 1 is running, the outdoor fresh air is boosted by the air intake fan of the air intake booster device 11 and then sent to the header 12. In the return air box, it is finally sent to the public space 7 or the second room after the cooling and dehumidification of the fan coil body or the air-conditioning treatment of heating and heating.

In this embodiment, the air inlet booster 11 is installed on the ceiling, and the fresh air outlet of the room faces downward. A filter layer is also arranged in the air inlet channel. In this embodiment, the air inlet booster 11 is set on the balcony and the fresh air fan coil 13 is set in the living room as an example, the air outlet of the air inlet booster 11 is connected to the header through at least one air outlet 12 The air inlet is connected, and the air outlet duct passes through the beam or shear wall. In order not to damage the integrity and strength of the beam or shear wall, the air outlet of the air inlet booster device 11 generally passes through the beam or shear wall through two or more air outlet pipes, that is, the air inlet booster device 11 Two or more air outlets are arranged on the upper part, and an air outlet pipe is connected to each air outlet. During operation, the intake air booster 11 absorbs outdoor fresh air at a low position, filters and boosts the air, and sends it to the header 12 .

The header 12 acts as a fresh air passage, and its air inlet 2 is connected with the air outlet 1 of the air inlet booster 11 , and its air outlet 2 is communicated with the return air box of the fresh air fan coil unit 13 . In order to prevent the fresh air flow in the form of high-speed jets from impacting the fan impeller in the return air box of the fresh air fan coil 13 and even disturbing and destroying the dynamic balance of the fan impeller (the fan assembly in the return air box of the fresh air fan coil 13 includes two fans, the two The impellers of each fan are coaxially arranged on both sides of the same motor), and the header 12 eliminates the vortex from the fresh air from the air inlet booster 11, decelerates and reduces noise, so that the fresh air has a low-speed laminar flow type of ≤3m/s The state flows into the return air box of the fresh air fan coil unit 13. The header 12 is arranged horizontally, the shape of the air duct of the header 12 is not limited in this embodiment, and the header 12 is generally designed with a rectangular section. In this embodiment, the header 12 is a long strip structure, therefore, the air ducts in the header 12 are arranged along the length direction of the header 12 , and the air ducts of the header 12 that communicate with the air ducts in the header 12 are arranged along the length direction of the header 12 . The second air inlet and the second air outlet are arranged in the length direction of the header 12 , are located on both sides of the header 12 and are staggered.

When the fresh air fan coil unit 13 is running, it can perform the internal circulation of the air conditioner (in this embodiment, when the fresh air fan coil unit 13 performs the internal circulation, the air inlet booster 11 is turned off), or it can perform fresh air cooling and dehumidification (heating). The air return box of the fresh air fan coil unit 13 is connected to the header 12 and the indoor space below the fresh air fan coil unit 13, and the air outlet of the fan coil unit body points to the indoor space in three directions.

When the fresh air module 1 is running, the air intake fan in the air intake booster 11 and the fan in the fresh air fan coil 13 run simultaneously, and the air intake booster 11 inhales outdoor fresh air and filters and boosts it and sends it to the header 12; The air flow eliminates the vortex in the header 12, decelerates and reduces noise, and flows into the return air box of the fresh air fan coil 13 in a low-speed laminar flow pattern of ≤3m/s; The pressure increase is accelerated, and after the cooling and dehumidification of the fan coil body or the air conditioning treatment of heating and heating, it is sent to the public space 7 or the second room from the outlet 3 of the fan coil body.

In this embodiment, in order to effectively realize the above-mentioned function of the above-mentioned “fresh air flow deceleration and noise reduction, from turbulent flow to laminar flow”, an air distribution orifice plate 121 is arranged in the inner cavity of the header 12, and the air distribution orifice plate 121 passes through the The board is densely covered with micro-holes, which throttle, decelerate and homogenize the high-speed fresh air flow. This embodiment does not specifically limit the shape of the air distribution orifice plate 121, which may be a flat plate, a folded plate, or a curved plate. In order to improve the throttling, deceleration, and homogenization effects of the air distribution orifice plate 121 , in this embodiment, the flat plate is bent in a wavy manner to increase the area of the air distribution orifice plate 121 and the number of ventilation pores.

Example 4

This embodiment is further improved on the basis of the above-mentioned embodiment. In this embodiment, please refer to FIG. 6 , the air exhaust module 2 includes a central air duct 24 and an air exhaust fan 22, and the return air duct 3 of each room is connected to the central air duct 24; the central air duct 24 passes through at least A rear air duct 23 is connected to the air suction port of the exhaust fan 22, and the exhaust port of the exhaust fan 22 communicates with the outside.

In this embodiment, the central air duct 24 is laid flat (not bent, not curled) above the room group, the diameter of the central air duct 24 is not less than the diameter of each bathroom return air duct 3, and the rear end The diameter of the air duct 23 is not larger than the diameter of the central air duct 24 .

This embodiment does not limit where the central air duct 24 and the exhaust fan 22 are specifically arranged in the room group in the building. For example, the central air duct 24 and the exhaust fan 22 can be arranged in the kitchen, balcony, bathroom, bedroom, storage area, etc. room, living room, aisle, etc., take the exhaust fan 22 set in the kitchen and the central air duct 24 set in the aisle as an example, because there is a beam between the kitchen and the aisle, therefore, the central air duct 24 and the rear of the exhaust fan 22 are connected. The end air duct 23 needs to pass through the beam. If only one rear end air duct 23 is set between the exhaust fan 22 and the central air duct 24, then the diameter of the rear end air duct 23 will be relatively thick, and the corresponding The opened hole for the rear air duct 23 to pass through is relatively large, which will damage the integrity and strength of the beam. Therefore, in this embodiment, it is preferable that the exhaust fan 22 and the central air duct 24 are connected through two or more thin rear air ducts 23 with relatively small diameters. The small holes in which the end air ducts 23 are adapted, and several thin rear air ducts 23 respectively pass through several small holes. Specifically, the exhaust fan 22 is provided with two or more air suction ports, and each air suction port is connected to the central air duct 24 through a rear air duct 23 respectively.

If the exhaust fan 22 is arranged on the balcony, since the balcony is communicated with the outside world, the exhaust port of the exhaust fan 22 may not need to communicate with the outside world through an exhaust pipe. If the exhaust fan 22 is installed in a room with an outer wall, the exhaust port of the exhaust fan 22 communicates with the outside through the exhaust pipe 21 .

This embodiment does not limit the number of exhaust pipes 21 , which may be one or more. Since the exhaust fan 22 is installed in the building, and the exhaust pipe 21 runs through the building to the outside, the exhaust pipe 21 should penetrate the outer wall of the building. If the exhaust port of the exhaust fan 22 is only communicated with the outside world through an exhaust pipe 21, then a general air outlet with a relatively large diameter for the exhaust pipe 21 to pass through needs to be opened on the outer wall of the building, then, Will damage the integrity and strength of the exterior wall. Therefore, in this embodiment, multiple exhaust pipes 21 are preferred, that is, two or more total air outlets are provided on the exhaust fan 22 , and an exhaust pipe 21 communicating with the outside is installed on each of the total air outlets.

Each toilet air return duct 3 can be distributed at any position of the central air duct 24, preferably, the rear air duct 23 is connected to the waist of the central air duct 24; The two ends of the central air duct 24 are the two ends of the central air duct 24 , that is, the pipe sections between the two ends of the central air duct 24 to the waist respectively, that is, the two sides of the waist of the central air duct 24 .

The whole-house fresh air system provided in this embodiment is an integrated innovation based on the room fresh air system set up adjacent to the outer wall of the room fan coil unit, and has very distinct technical and economic comparative advantages:

1. The ultimate optimization of the whole house fresh air replacement path

The whole-house fresh air system in this embodiment adopts the whole-house two-way flow fresh air air conditioning system, which faces multiple small rooms inside the casing going around. Obstacles have the resource endowment of airflow passages. The implementation of ductless air supply will make the fresh air sent from the balcony fresh air module reach the door of each room through the living room aisle, and then be inhaled by the secondary negative pressure of the relay fan in the room through the electric damper opened on the door. Then it is shot into the room by the "gravity slingshot" of the relay fan, which drives the dirty air in the room to flow into the return air outlet of the bathroom return air duct, enters the negative pressure central air duct, and finally is sucked into the booster by the exhaust fan and discharged outdoors.

This embodiment adopts the whole house two-way flow fresh air air conditioning system, and connects "environmental fresh air → fresh air module → living room aisle instead of air supply duct → fresh air outlet of each room → relay fan → bathroom return air duct → central air duct → exhaust fan → environment "Atmosphere" is linked to form an extremely optimized fresh air replacement path, and a complete supply and exhaust two-way airflow organization form including three stages of supply, replacement, and exhaust is linked. In the spring and autumn seasons when the ambient air is clean and the temperature and humidity are suitable, the fresh air module can also be short-circuited, and the fresh air can pass from the balcony screen door through the living room directly into the aisle and then into the room, which makes the process more simplified.

The whole house two-way flow fresh air air conditioning system is connected to the main ventilation path of the house in which the supply and exhaust are combined with the three stages of supply, replacement and exhaust. The room air path composed of "pipe" solves the long-standing problem of short circuit of fresh air in the room; all rooms in the suite, including the bathroom, enjoy the fresh air replacement of "big water flooding", and the fresh air replacement of the whole house has no blind spots or dead ends.

2. Fully compatible fresh air replacement power

This embodiment of the whole house two-way flow fresh air air conditioning integrated system relies on the existing household central air conditioning system to explore the potential of the room fan coil unit to serve as the power of the total fresh air module of the whole house and the power of the fresh air relay of the room.

The combined fresh air module installed in the living room is compatible twice: because the fresh air fan coil unit is installed close to the balcony door from the deep part of the traditional living room, the structural reversal of the temperature field in the living room realizes "transition energy saving", which brings the heat load of the living room Lower, combine the 2 fresh air fan coil units in the traditional living room (originally split into 2 to reduce noise) into 1, and then combine the air conditioning treatment of the balcony air inlet booster to send fresh air and the circulation function in the living room again , implement "same machine air conditioner"; the combined fresh air module adopts large fan coil unit (FP102 and above) or FP102 heat exchanger and FP85 fan to recombine the fresh air fan coil unit, which just matches the large load energy of fresh air air conditioning treatment in summer and winter. The fan of the intake air booster is used in series with the fresh air fan coil fan, which realizes the decentralization of the whole process of fresh air filtration and air conditioning treatment, effectively reduces the working pressure difference of the fan coil unit, and suppresses the noise in the living room. After 2 functional reorganizations and 1 spatial reorganization of the fresh air module and the fan coil unit to become a combined fresh air module, the cost of fresh air air conditioning equipment, installation and operation in the living room has decreased compared to the previous traditional double fan coil unit.

For the room fresh air system, on the premise of not adding independent air supply pipelines and power equipment, set the relay fan as the relay power for the room fresh air replacement: rely on the room door leaf (or above the door frame) to set the room fresh air electric damper to exhaust air throughout the house On the basis of the primary negative pressure in the room generated by the system's exhaust air, the secondary negative pressure function of the suction outlet when the relay fan is running is developed, so that the suction outlet of the relay fan becomes the lowest pressure area in the room, and the maximum pressure difference is generated inside and outside the door fan electric damper. The fresh air from the aisle pours into the room and is shot towards the outer wall of the room by the "gravity slingshot" of the relay fan. When the outer wall blocks it and returns to the main space of the room, it drives the dirty air into the return air outlet of the fan, which solves the problem of short circuit of the fresh air in the room.

3. Perfect fresh air replacement efficiency

When the whole house two-way flow fresh air air conditioning system in this embodiment performs fresh air replacement, the introduced outdoor fresh air is first filtered in the air inlet booster, and then enters the large fresh air fan coil unit (above FP102) in the living room for air conditioning modulation, including summer Cooling and dehumidification, heating and heating in winter, become high-quality fresh air with freshness, cleanliness, temperature and humidity up to standard, and then sent into the living room aisle in the suite to reach the door of each room; when the fresh air is running, the air supply volume of the balcony air inlet booster device ≥ the living room fresh air The air volume of the fan coil unit is running at low speed, the circulating air volume in the fresh air fan coil unit in the living room is reduced to zero, the fresh air from the balcony and the dirty air in the living room do not mix, and the fresh air blown from the fresh air fan coil unit advances to the main space of the living room and the connecting aisle in the form of laminar flow, driving The sewage in the living room aisle is discharged through the return air outlet of the return air duct in the public toilet; the living room aisle has a large flow cross-section, low flow rate, and small airflow resistance of fresh air, which reduces the energy consumption of fresh air transportation;

When the room is replaced by fresh air, in order to reduce the mixing of fresh air and dirty air in the room and reduce the air age of the room, implement fresh air replacement at different times in different rooms to increase the air volume of the room in the state of fresh air replacement, so that the excess air volume is close to the low-speed running air volume of the fan coil in the room. , reduce the internal circulation air volume that may exist in the relay fan when the room fresh air is replaced, and improve the room fresh air replacement efficiency.

The central air duct exhaust system is set above the aisle. The waste air from each toilet return air duct is collected from both ends, flows to the waist air outlet, and then flows through 2 thin-diameter beam ducts to the exhaust fan; the air paths are parallel to the air paths. Network, expand the cross-sectional area of the air duct, reduce the flow rate, reduce the resistance, and greatly reduce the exhaust energy consumption and noise.

In this example, the energy consumption of the whole house two-way flow fresh air replacement adopts the three-level link conveying method of "fresh air positive pressure feeding + fan coil gravitational slingshot + sewage air negative pressure extraction", and according to the "fresh air replacement four times a day" for large-sized houses , 45min each time, each time the ventilation volume is 400m ³ comprehensive scanning and replacing once” for calculation: the fresh air module and the exhaust air module use the external rotor centrifugal fan YWF-B2S-220-065AB00, 540m ³ /h, power 80w; living room, room fan The coil units are FP102 and FP51 respectively, the fresh air replacement air volume is 540 and 270m ³ /h respectively, and the motor power is 54 and 98w respectively. When executing the fresh air partition replacement in the casing, 2 room fan coil units are operated at the same time; Positive pressure feeding + room fan coil relay power + sewage air negative pressure exhausting "three-stage pressurized transmission, the total fan power is 2 × 80 + 2 × 54 + 1 × 98 = 366w, running 4 times a day in total 3 hour, the 24-hour average of day and night is 45.75w, and the power consumption of fresh air replacement throughout the day is 1.1kwh (excluding the energy consumption of the main air conditioner). Compared with the air-conditioning (heating) load of about 15kw and the 5kw power load of the air-conditioning (heat pump) main unit in the whole house in winter and summer, the average energy consumption of the whole house two-way flow fresh air replacement of 45.75w is 2 orders of magnitude lower, and also significantly lower than that of the fan coil unit in the living room. The energy consumption of buildings reduced by "transition energy saving" can be ignored.

4. Super-substantial building energy saving

This embodiment of the whole house two-way flow fresh air air conditioning system continues all the functions of the air conditioner, and innovatively sets the traditional room fan coil unit in the deep part of the room to the position adjacent to the outer wall, and innovates the new structural relationship between the air conditioner and the building , change the indoor temperature field distribution, reduce the temperature difference ⊿T inside and outside the outer wall, thereby reducing the indoor and outdoor heat exchange intensity Q and building energy consumption.

Because the energy consumption of air-conditioning heating is essentially derived from the heat exchange inside and outside the building; the heat exchange inside and outside the building involves three heat exchange stages: indoor air convection, external wall heat conduction, and outdoor air convection, resulting in heat inside and outside the building. The calculation and control of the exchange is very complicated; however, the calculation and control of the heat exchange inside and outside the building in summer and winter are more complicated, in the case of Q (heat exchange intensity) = K (total heat transfer coefficient) × S (outer wall area) × ⊿T (internal and external walls) In the formula of temperature difference), only the component factors and interrelationships of K are complex, and the structural complexity and computational complexity of K do not change the simple mathematical relationship that the heat exchange intensity Q is proportional to the area S of the outer wall and the temperature difference ⊿T inside and outside the outer wall. .

In traditional air-conditioning installation projects, the room fan coil is usually installed in the deep part of the room relative to the outer wall. Taking the cooling operation under the standard operating conditions of the air conditioner in summer as an example, the room fan coil installed in the deep part of the room sucks the room with a temperature of about 27°C. The return air is cooled and dehumidified, and then the cold air of about 14°C after the cooling and dehumidification is blown to the outer wall through the upper space of the room. When the outer wall blocks the reflection, the cold air flow from the middle and lower space of the room flows back to the bottom of the fan coil in the deep room of the room, and is blocked by the room. The fan coil unit is sucked in again to cool down and dehumidify to start a new cycle; in the above-mentioned internal circulation process of the air conditioner, the process of blowing out and returning the cold air flow from the fan coil unit in the room is a process in which the air flow cross section is gradually expanded, the air flow speed is gradually attenuated, and the temperature is gradually increased. process, and the increase in airflow temperature mainly occurs in the process of airflow returning from the external wall to the suction port of the fan coil unit in the room.

If the ambient temperature is 32°C, the outlet air temperature of the traditional deep room fan coil unit during cooling operation is 14°C, and the temperature of the air blowing to the inner side of the outer wall and then vertically downward is around 19°C, the return air is about 27°C, and the outer wall is about 27°C. The indoor and outdoor temperature difference = 32-19 = 13 ℃, then the outdoor environment leaks into the indoor heat through the outer wall Q1 = K × S × ⊿ T1 = 13 K × S.

In this embodiment, the traditional deep-set room fan coil unit is innovatively positioned adjacent to the outer wall to create a new structural relationship between the air conditioner and the building. The indoor temperature field changes accordingly, and the temperature difference ⊿T between the inner and outer walls changes accordingly, so that the indoor and outdoor heat The exchange strength Q and building energy consumption change accordingly.

The same ambient temperature is 32°C, the same room structure, according to this embodiment, the room fan coil installed adjacent to the outer wall has an outlet air temperature of 14°C during cooling operation, and the temperature of the air blowing to the deep part of the room and then vertically descending is 19°C Nearby, the return air temperature at the outer wall is 25°C, the fresh air temperature of the fan coil in the room is 27°C, and the indoor-outdoor temperature difference at the outer wall=32-25=7°C, then the outdoor environment leaks into the indoor heat through the outer wall Q2=K ×S×⊿T2=7K×S; Compared with the setting scene of the fan coil in the deep part of the room under the relationship of the traditional air-conditioning building structure, the reduction of the heat leakage into the room (Q1-Q2)/Q1=(13-7)/13=46% .

5. The ultimate price-performance ratio

If the two-way pipeline two-way flow fresh air standard for public buildings is implemented, the residential floor height needs to be increased by 300mm to 3300mm to solve the problem of space interference between the two pipelines of air supply and exhaust, and the building construction area will be reduced by 10%, which will directly cause real estate development projects. Real estate enterprises have an unbearable burden; at the same time, each house adds 2 sets of pipe valves for air supply and exhaust, 1 fresh air module, and 1 exhaust module, and the equipment cost is increased by 5,080 yuan (2 sets of lines × 1,000 yuan / Each set of circuit + 12 dampers and dampers × 140 yuan / piece + central control large screen 800 yuan + fresh air module 800 yuan + exhaust module 800 yuan), installation fee 2140 yuan (2 sets of circuits + 12 damper dampers + fresh air module + 50% of the equipment cost of exhaust air module), a total of 7220 yuan.

This embodiment adopts the whole house two-way flow fresh air air conditioning system, based on the innovations of "transition energy saving", "same machine air conditioner", "ductless air supply", "gravitational slingshot" and "central air duct exhaust" to achieve the ultimate cost performance: at 130 On the basis of the household structure and the household central air-conditioning system, only 6 electric dampers for the fresh air outlet of the room, 5 electric dampers for the return air duct and 1 set of exhaust pipes are added, and the equipment cost is increased by 3,400 yuan (11 dampers × 140 yuan/piece + central control large screen 800 yuan + exhaust fan duct 1000 yuan), adding about 850 yuan for the whole process of fresh air equipment installation (5 return air duct electric air valves and 1 set of exhaust air duct fan equipment cost 50%), a total increase of 4,250 yuan in equipment and installation fees, and a set of high-quality, high-efficiency, and space-saving whole-house two-way flow fresh air air conditioning system. It completely and completely solves the problems of airflow path optimization, power adaptation, and efficiency improvement in the three stages of fresh air intake, fresh air replacement, and sewage air discharge.

Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essential content of the present invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily, provided that there is no conflict.

Claims (17)

1. A bidirectional flow whole-house fresh air system with a toilet arranged in a room is used for a room group, wherein the room group comprises at least a first room with the toilet arranged therein and a public space communicated with the first room; the first room comprises a room body and a toilet communicated with the room body; its characterized in that, two-way flow whole house new trend system includes:

the fresh air module is arranged on the room group and used for sending outside fresh air into the public space;

the air exhaust module is arranged on the room group and used for sucking and exhausting the dirty air in the room group to the outside of the room group;

the room fresh air port is formed in the enclosing structure of the room body and used for sending fresh air of the public space into the room body;

the toilet ventilation opening is arranged on the enclosure structure of the toilet and used for discharging the dirty air in the room body into the toilet;

the toilet air return pipe is connected with the air exhaust module and used for exhausting the dirty air in the toilet out of the room group; the air return inlet of the toilet air return pipe is positioned in the toilet;

the relay fan is arranged in the room body, and the distance between the room fresh air port and the suction opening of the relay fan is smaller than the distance between the room fresh air port and the toilet ventilation opening;

when the first room fresh air replacement is operated, under the action of the relay fan, fresh air entering the room body from the room fresh air inlet enters the relay fan from the air suction port of the relay fan, is discharged from the air outlet of the relay fan at a high speed, so that air flowing and fresh air replacement in the room body are pushed, and dirty air in the room body enters the toilet from the toilet ventilation port and is discharged out of a room group through the toilet air return pipe and the air exhaust module in sequence.

2. The bi-directional flow full house fresh air system of claim 1, wherein the fresh air module is disposed in the public space for directly sending fresh air from outside into the public space.

3. The bi-directional flow full house fresh air system with toilets inside a room as claimed in claim 1, wherein said room group further includes a second room, said second room being in communication with said common space;

the fresh air module is arranged in the second room, and a room air outlet is formed in the enclosure structure of the second room; when the air conditioner runs, the fresh air module firstly sends outside fresh air into the second room, and then the fresh air is sent into the public space through the room air outlet.

4. The bi-directional flow whole house fresh air system with the toilet arranged in the room as claimed in claim 2 or 3, wherein the fresh air module comprises an air inlet pressure boosting device, a header and a fresh air fan coil which are connected in sequence, the header is communicated with the air inlet pressure boosting device and the fresh air fan coil, and the air inlet pressure boosting device is communicated with the outside atmosphere; an air inlet fan is arranged in the air inlet boosting device; the fresh air fan coil is arranged on the outer wall of the public space or the second room or a position close to the outer wall.

5. The bi-directional flow whole house fresh air system of claim 4, wherein the header is provided with an air distribution hole plate, and the air distribution hole plate is located between the air inlet and the air outlet of the header.

6. The bi-directional flow whole house fresh air system with a toilet in a room of claim 1, wherein the exhaust module comprises a central air duct and an exhaust fan, and the toilet return air duct is connected with the central air duct; the central air pipe is connected with the air suction port of the air exhaust fan through at least one rear end air pipe, and the air outlet of the air exhaust fan is communicated with the outside atmosphere.

7. The bi-directional flow whole house fresh air system in a room with a toilet according to claim 1, wherein a room fan coil is arranged on or near the outer wall in the room body, and when the room fan coil circulates in the room, air in the room body enters the room fan coil from the air suction port of the room fan coil and is discharged into the room body through the air outlet of the room fan coil under the action of a fan of the room fan coil.

8. The bi-directional flow whole house fresh air system as claimed in claim 7, wherein the outlet of the room fan coil is provided with a horizontal guide plate for controlling the air outlet direction to swing left and right and a vertical guide plate for controlling the air outlet direction to swing up and down.

9. A bi-directional flow whole house fresh air system with a toilet in a room as claimed in claim 1, wherein the room fresh air opening is provided on a wall of the room body, a door head of the door of the room body or a door leaf of the door of the room body.

10. A bi-directional flow full house fresh air system with a toilet in a room as claimed in claim 9, wherein the toilet vent is provided on a wall of the toilet, a door head of the toilet door or a door leaf of the toilet door.

11. A bi-directional flow whole room fresh air system with a toilet in a room as claimed in claim 11, wherein the room fresh air opening is provided at an upper portion of a door leaf of the room door of the room body, and the toilet ventilation opening is provided at a lower portion of the door leaf of the toilet door.

12. The bi-directional flow whole house fresh air system for the toilet inside a room as claimed in claim 1, wherein the room fresh air port is provided with a first air door.

13. The bi-directional flow full house fresh air system of claim 12, wherein the first damper is an electric damper, and comprises an electric driving device and a sliding piece, the electric driving device is provided with a telescopic push rod, the sliding piece is connected with the push rod, and the electric driving device drives the sliding piece to open or close the fresh air opening of the room through the push rod.

14. The bi-directional flow full house fresh air system of claim 1, wherein the two sides of the fresh air inlet of the room are provided with first grilles, the first grilles comprise a plurality of first grilles which are arranged in parallel from top to bottom, and the first grilles are inclined from inside to outside from top to bottom.

15. The bi-directional flow whole house fresh air system in a room with a toilet according to claim 1, wherein the toilet vent is provided with a second air door.

16. The bi-directional flow full house fresh air system of claim 1, wherein the two sides of the ventilation opening of the toilet are provided with second grilles, the second grilles comprise a plurality of second grilles which are arranged in parallel from top to bottom, and the second grilles are inclined from inside to outside from top to bottom.

17. The bi-directional flow whole house fresh air system with the toilet arranged in the room as claimed in claim 1, wherein the relay fan, the air return opening of the toilet air return duct and the room fan coil are all arranged in the ceiling, and the air suction opening of the relay fan, the air return opening of the toilet air return duct and the air suction opening of the room fan coil are all arranged downwards.

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