Energy-saving type ground air supply fresh air conditioning system

Abstract

The utility model discloses an energy-saving type ground air supply fresh air conditioning system which comprises a main machine and a ground air supply pipeline and is provided with an outer wall heat preservation layer, the ground air supply pipeline is communicated with an air supply duct of the main machine, an air pipe heat preservation layer is arranged outside the ground air supply pipeline and is made of aerogel composite materials, and the outer wall heat preservation layer comprises an aerogel coating. Comprehensive heat preservation measures are provided, heat loss is reduced, and the ground air supply fresh air conditioning system is more energy-saving. Specifically, an aerogel composite material is used as an air pipe heat preservation layer, the heat preservation performance of an underground air supply pipeline is improved on the premise that the requirement for the thickness of a terrace is reduced, an outer wall body is provided with an outer wall heat preservation layer containing an aerogel coating, and the overall heat preservation performance of indoor space is greatly improved; and the energy-saving performance of the underground air supply fresh air conditioning system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning equipment, in particular to an energy-saving ground-supply fresh air air conditioning system. Background Art

[0002] Fresh air air conditioning system is a system used for ventilation and air treatment, usually used in places with strict requirements on indoor air environment. The ground supply fresh air air conditioning system can use the ground supply pipe buried under the indoor ground to transport the fresh air introduced by the fresh air fan to each indoor space, and can transport heated or cooled airflow to the room as needed to adjust the indoor temperature.

[0003] In the prior art, the floor air supply pipeline is buried in the floor, so its height is limited. At the same time, in order to ensure sufficient air supply, the floor air supply pipeline needs to be set in a relatively flat shape, which results in a large specific surface area of ​​the floor air supply pipeline, large heat loss, and insufficient insulation and energy saving. In the prior art, the floor air supply pipeline is usually coated with an insulation layer to improve this problem. However, the existing insulation solution is single and the energy-saving effect is poor. Utility Model Content

[0004] The utility model aims to provide an energy-saving floor-supply fresh air air conditioning system which improves heat preservation means, reduces heat loss in indoor space, and enhances overall energy-saving performance.

[0005] In order to solve the above technical problems, the utility model provides an energy-saving ground air supply fresh air air conditioning system for supplying air to the indoor space of a building, wherein the building comprises an outer wall and a bottom plate, the inner side of the outer wall faces the indoor space, and the outer side faces the outdoors, the bottom plate is arranged at the bottom side of the indoor space, and the energy-saving ground air supply fresh air air conditioning system comprises:

[0006] The main unit is formed with an air supply duct and a fresh air outlet, the air inlet end of the air supply duct can be selectively connected to the indoor space or the outdoors, the air outlet end of the air supply duct is connected to the fresh air outlet, the air supply duct is further provided with a temperature adjustment component and a fan component, the temperature adjustment component is used to heat and / or cool the airflow flowing through the air supply duct, and the fan component is used to drive the airflow from the air inlet end to the air outlet end;

[0007] a floor air supply pipeline, located below the main unit and arranged on the upper side of the bottom plate, the floor air supply pipeline is used to connect the fresh air outlet and has an indoor air outlet, the floor air supply pipeline is provided with an air duct insulation layer at least on one side facing the bottom plate, and the air duct insulation layer is an aerogel composite material; and

[0008] The external wall insulation layer is arranged on the inner side or the outer side of the external wall, and the external wall insulation layer includes an aerogel coating.

[0009] Optionally, the aerogel composite material is formed by secondary composite of silica nanoporous aerogel and fiber cotton.

[0010] Optionally, the aerogel coating is arranged on the outside of the exterior wall, and the aerogel coating includes an aerogel surface layer arranged on the outermost side and an aerogel middle insulation layer arranged between the aerogel surface layer and the exterior wall, the components of the aerogel surface layer include resin, silica aerogel particles and glass beads, the aerogel middle insulation layer includes resin and silica aerogel particles, and the thickness of the aerogel middle insulation layer is greater than that of the aerogel surface layer.

[0011] Optionally, the exterior wall insulation layer further includes a primer layer arranged between the aerogel insulation layer and the exterior wall, and a putty layer arranged between the aerogel insulation layer and the aerogel surface layer.

[0012] Optionally, the cross-section of the floor air supply duct has a horizontal dimension of L and a vertical dimension of H, and L is greater than or equal to 3H.

[0013] Optionally, the air duct insulation layer is provided on the bottom side and the peripheral side of the floor air supply duct, the peripheral side is extended between the upper side and the bottom side of the floor air supply duct, and the air duct insulation layer is not provided on the upper side of the floor air supply duct.

[0014] Optionally, a heat-conducting layer is provided on the upper side of the floor air supply pipeline, and the heat-conducting layer is used to be attached to the lower side of the ground layer.

[0015] Optionally, the material of the heat conducting layer is metal.

[0016] Optionally, a partition is provided in the ground air supply duct to separate the air duct into an upper air duct and a lower air duct arranged in sequence in the up and down directions. The lower air duct is respectively provided with a first valve and a second valve at both ends in the air supply direction. When the first valve and the second valve are closed, the lower air duct is sealed.

[0017] Optionally, the building further includes an inner wall, both sides of the inner wall are the indoor space, the energy-saving ground air supply fresh air air conditioning system also includes an air supply duct extending in the up and down directions, the upper end of the air supply duct is connected to the fresh air outlet, and the lower end is connected to the ground air supply pipeline, and the air supply duct is installed on the inner wall.

[0018] The technical solution provided by the utility model has the following advantages:

[0019] The energy-saving floor-supply fresh air air conditioning system provided by the utility model includes a main unit and a floor-supply air duct, and is equipped with an external wall insulation layer. The main unit can introduce outdoor fresh air into the indoor space, and can also adjust the temperature of the airflow delivered to the indoor space to achieve the purpose of adjusting the room temperature. The floor-supply air duct is connected to the air supply duct of the main unit, wherein an air duct insulation layer is arranged on the outside of the floor-supply air duct, and the air duct insulation layer is an aerogel composite material, and the external wall insulation layer includes an aerogel coating. Compared with the existing technology that only coats the outer periphery of the air supply duct with an insulation layer, the utility model provides more comprehensive insulation measures, reduces heat loss, and makes the floor-supply fresh air air conditioning system more energy-efficient. Specifically, an aerogel composite material is used as the air duct insulation layer, and the thermal insulation performance of the floor-supply air duct is improved while reducing the demand for floor thickness. The external wall is provided with an external wall insulation layer containing an aerogel coating, which greatly improves the overall thermal insulation performance of the indoor space and improves the energy-saving performance of the floor-supply fresh air air conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A three-dimensional structural diagram of an embodiment of an energy-saving ground-air supply fresh air air conditioning system is provided for the utility model;

[0022] Figure 2 for Figure 1 Schematic diagram of the cross section of the central ground air supply duct;

[0023] Figure 3 for Figure 1 Partial schematic diagram of the longitudinal section of the central air supply pipeline;

[0024] Figure 4 for Figure 1 A side view of another embodiment of the central air supply pipeline;

[0025] Figure 5 This is a schematic structural diagram of the exterior wall insulation layer in the energy-saving floor-supply fresh air air conditioning system provided by the utility model.

[0026] Description of reference numerals:

[0027] 100-floor fresh air air conditioning system; 10-main unit; 11-fresh air outlet; 20-floor air supply pipeline; 21-air duct insulation layer; 22-heat conductive layer; 23-partition; 231-upper air duct; 232-lower air duct; 24-second valve; 25-air guide mechanism; 200-indoor air outlet; 30-exterior wall insulation layer; 31-aerogel middle insulation layer; 32-aerogel surface layer; 33-primer layer; 34-putty layer; 40-air supply duct; 50-air distribution box; 201-exterior wall; 202-bottom plate; 203-ground layer; 204-backfill layer. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0030] See also Figure 1 The utility model provides an energy-saving floor-supply fresh air air conditioning system 100 (hereinafter referred to as the floor-supply fresh air air conditioning system 100), the indoor air outlet 200 of the floor-supply fresh air air conditioning system 100 is arranged on the ground surface or near the ground. Furthermore, the floor-supply fresh air air conditioning system 100 includes a main unit 10, a floor air supply pipeline 20, an air supply duct 40 and an air distribution box 50. The main unit 10 is usually installed on a wall or a ceiling, and is connected to the air distribution box 50 through the air supply duct 40 extending in the up and down directions. The air distribution box 50 can be connected to multiple floor air supply pipelines 20. The floor air supply pipeline 20 is arranged below the main unit 10 and buried under the ground to distribute the fresh air flow to each room through the indoor air outlet 200 arranged at its end.

[0031] The floor-supply fresh air air conditioning system 100 provided in this embodiment is used to supply air to the indoor space of a building. The building includes an outer wall 201 and a bottom plate 202, the inner side of the outer wall 201 faces the indoor space and the outer side faces the outdoors, and the bottom plate 202 is arranged at the bottom side of the indoor space, and is generally a concrete floor slab or floor.

[0032] For further information, please refer to Figure 2 , Figure 3 and Figure 5 , includes a main unit 10 and a floor air supply duct 20, and is provided with an external wall insulation layer 30.

[0033] The host 100 can introduce outdoor fresh air into the indoor space, and can also adjust the temperature of the air flow sent to the indoor space to achieve the purpose of adjusting the room temperature. Specifically, the host 10 is formed with an air supply duct and a fresh air outlet 11, and the air inlet end of the air supply duct can be selectively connected to the indoor space or the outdoors. For example, when the local air supply fresh air air conditioning system 100 is in the fresh air mode, the air inlet end of the air supply duct can be connected to the outdoors, and when the local air supply fresh air air conditioning system 100 is in the heating or cooling mode, the air inlet end of the air supply duct can be connected to the indoor. The air outlet end of the air supply duct is connected to the fresh air outlet 11, and a temperature adjustment component and a fan component are also provided in the air supply duct. The temperature adjustment component is used to heat and / or cool the air flow flowing through the air supply duct, which can specifically include an electric auxiliary heating device and / or a heat exchanger connected to a compressor, etc. The fan component is used to drive the air flow from the air inlet end to the air outlet end, which can specifically be a centrifugal fan, an axial flow fan, etc.

[0034] The ground air supply duct 20 is located below the host 10 and is arranged on the upper side of the base plate 202. The ground air supply duct 20 is used to connect the fresh air outlet 11 and has an indoor air outlet 200. The ground air supply duct 20 is provided with a duct insulation layer 21 at least on one side facing the base plate 202, and the duct insulation layer 21 is an aerogel composite material. It should be noted that in the utility model, the nanoporous aerogel composite material refers to a flexible coiled material made by secondary compounding of aerogel and a substrate. Structurally, the nanoporous aerogel composite material has a nanoscale pore structure with a pore size between 30 and 50 nanometers. Its highly nanoscale pore size can effectively limit the free movement of air molecules, so that the airflow adheres to the pore wall and cannot form effective convection, thereby greatly reducing the transfer of heat. In addition, its internal complex three-dimensional interconnected network structure also prolongs the heat transfer path of heat transmitted through the solid, further enhancing its thermal insulation performance. The specific component of the nanoporous aerogel is preferably silica aerogel. In this embodiment, the air duct insulation layer 21 adopts aerogel composite for insulation. Under the same insulation and noise reduction effect, its thickness d is greatly reduced compared with traditional materials, and can reach 1 / 5-1 / 3 of the thickness of traditional materials, thereby effectively reducing the height of the ground air supply duct 20, with obvious space benefits.

[0035] Preferably, the aerogel composite material is formed by secondary compounding of silica nanoporous aerogel and fiber cotton, that is, the fiber cotton is used as a substrate, and the silica nanoporous aerogel and the fiber cotton are tightly combined by an impregnation method to form a composite material.

[0036] In addition, an external wall insulation layer 30 including an aerogel coating is provided on the inner side or the outer side of the external wall 201. In this embodiment, an external wall insulation layer 30 is provided on the inner side or the outer side of the external wall 201. The external wall insulation layer 30 includes an aerogel coating. The aerogel coating refers to a resin solution and silica aerogel particles. Due to its good chemical inertness and high specific surface area, silica can produce extremely fine micropores, thereby forming a large number of aerogel material channels in the material, so that the aerogel coating has ultra-high adsorption performance and excellent thermal insulation effect.

[0037] Compared with the prior art that only coats the outer periphery of the air supply duct with an insulation layer, the present invention provides a more comprehensive insulation measure, reduces heat loss, and makes the floor-to-air fresh air air conditioning system 100 more energy-efficient. Specifically, an aerogel composite material is used as the air duct insulation layer 21, which improves the insulation performance of the floor-to-air duct 20 while reducing the demand for floor thickness. The outer wall 201 is provided with an outer wall insulation layer 30 containing an aerogel coating, which greatly improves the overall insulation performance of the indoor space and improves the energy-saving performance of the floor-to-air fresh air air conditioning system 100.

[0038] For further information, see Figure 5 , the aerogel coating is arranged on the outside of the outer wall 201, the aerogel coating includes an aerogel surface layer 32 arranged on the outermost side and an aerogel middle insulation layer 31 arranged between the aerogel surface layer 32 and the outer wall, the components of the aerogel surface layer 32 include resin, silica aerogel particles and glass microspheres, the aerogel middle insulation layer 31 includes resin and silica aerogel particles, and the thickness of the aerogel middle insulation layer 31 is greater than the aerogel surface layer 32. In this embodiment, the aerogel middle insulation layer 31 mainly utilizes its thick thickness and the characteristics of being equipped with a large number of silica aerogel particles to provide excellent thermal insulation performance for the outer wall 201. As for the aerogel surface layer 32, glass microspheres are added on the basis of the aerogel middle layer, which greatly enhances the heat reflection performance of the aerogel surface layer 32, thereby greatly improving the thermal insulation performance of the outer wall through the cooperation of the aerogel surface layer 32 and the aerogel middle insulation layer 31.

[0039] Preferably, the exterior wall insulation layer 30 also includes a primer layer 33 disposed between the aerogel insulation layer 31 and the exterior wall, and a putty layer 34 disposed between the aerogel insulation layer 31 and the aerogel surface layer 32. Among them, the primer, as the first layer of the aerogel thermal insulation coating system, mainly plays the role of adhering and pretreating the surface of the exterior wall 201, can improve the adhesion between the aerogel coating and the wall surface, and ensure the overall stability and durability of the coating system. The main components of the primer usually include resin, pigment, filler and additives. The putty layer 34 is disposed between the aerogel insulation layer 31 and the aerogel surface layer 32, and plays the role of filling and leveling, which can enhance the overall hardness of the coating and improve the durability of the coating.

[0040] Based on the above examples, please refer to Figure 2 The horizontal dimension of the cross section of the floor air supply duct 20 is L, and the vertical dimension is H, where L is greater than or equal to 3H. Thus, the floor air supply duct 20 has a flat shape.

[0041] Further, the bottom side and the surrounding side of the floor air supply duct 20 are provided with the duct insulation layer 21, and the surrounding side is an extension between the upper side and the bottom side of the floor air supply duct 20, and the duct insulation layer 21 is not provided on the upper side of the floor air supply duct 20. In this embodiment, when the floor air supply fresh air air conditioning system 100 is in the heating mode, its heat is easily lost from its lower side and surrounding side, so the duct insulation layer 21 is provided on the bottom side and the surrounding side of the floor air supply duct 20. In addition, in order to ensure the heating effect, the air outlet temperature is usually high, and the indoor air outlet is located near the ground. If the air outlet temperature is too high, it is easy to cause discomfort to the human body. For this reason, in this embodiment, the duct insulation layer 21 is not provided on the upper side of the floor air supply duct 20, so that the air flow heat transported by the floor air supply duct 20 is partially conducted to the ground layer 203 in the form of heat radiation, so that the ground temperature felt by the human body increases, and the air supply temperature of the indoor air outlet 200 decreases, thereby improving the comfort of the human body in the heating mode.

[0042] Furthermore, a heat-conducting layer 22 is provided on the upper side of the floor air supply duct 20. Preferably, the material of the heat-conducting layer 22 is metal. The heat-conducting layer 22 is used to be attached to the lower side of the ground layer 203 (such as a floor or floor tile). In this embodiment, the heat-conducting layer 22 is used to conduct the heat in the floor air supply duct 20 to the ground layer 203 to improve the comfort of the human body. Figure 2The heat-conducting layer 22 is fully spread on the bottom plate 202, and a backfill layer 204 covering the outer periphery of the ground air supply pipeline 20 is provided between the bottom plate 202 and the ground layer 203. The material of the backfill layer 204 can be expanded perlite, ceramsite and other building materials with good thermal insulation performance and light weight. In this way, the heat dissipation on the upper side of the ground air supply pipeline 20 is further increased, and the temperature distribution of the ground layer 203 is made more uniform, thereby improving the user's comfort.

[0043] On this basis, in order to further improve the heating comfort, an air guide mechanism 25 may be provided on the outside of the indoor air outlet 200, such as Figure 4 As shown, the air guide mechanism 25 may have a hemispherical foldable structure, which may have a first state of being completely closed and a second state of being completely opened. Figure 4 The middle air guide mechanism 25 is in the second state, and the dotted arrow in the figure indicates the direction of airflow delivery. When the air guide mechanism 25 is in the first state, the indoor air outlet 200 delivers airflow vertically upward. This situation is suitable for sending the cold airflow as high as possible in the cooling mode. On the contrary, in the heating mode, the air guide mechanism 25 should be adjusted to the second state, that is, fully opened to guide the airflow in the horizontal direction, so that the hot air flow is delivered horizontally as close to the ground layer 203 as possible, thereby reducing the situation where the hot air flow overflows upward and avoids the feeling of hot head and cold feet.

[0044] Optionally, see Figure 2 and Figure 3 The air supply pipe 20 is provided with a partition 23 to separate the air duct into an upper air duct 231 and a lower air duct 232 arranged in sequence in the up and down directions. The lower air duct 232 is provided with a first valve and a second valve 24 at both ends in the air supply direction. Figure 3 As shown, when the first valve and the second valve 24 are closed, the lower air duct 232 is sealed. The dotted arrow in the figure indicates the direction of the air supply airflow. It can be seen that the airflow only flows through the upper air duct 231. In this embodiment, when the host 10 is in the fresh air mode, the upper air duct 231 and the lower air duct 232 can be opened to increase the fresh air volume and quickly improve the indoor air quality. On the contrary, when the host 10 is in the heating or cooling mode, the first valve and the second valve 24 are closed, so that the lower air duct 232 forms a sealed air layer, which further plays a role in heat insulation, prevents heat from being transferred to the lower side, and improves the overall energy-saving performance of the ground-supply fresh air air conditioning system 100.

[0045] On the basis of the above embodiment, the building further includes an inner wall, both sides of the inner wall are the indoor space, the energy-saving ground air supply fresh air air conditioning system 100 also includes an air supply duct 40 extending in the up-down direction, the upper end of the air supply duct 40 is connected to the fresh air outlet 11, and the lower end is connected to the ground air supply pipeline 20, and the air supply duct 40 is installed on the inner wall. In this way, the heat of the air supply duct 40 is not easily transferred to the outside, but is more retained indoors, thereby improving the overall energy-saving performance of the ground air supply fresh air air conditioning system 100.

[0046] Obviously, the above described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the utility model.

Claims

1. An energy-saving fresh air air conditioning system for supplying air to an indoor space of a building, wherein the building comprises an outer wall and a bottom plate, wherein the inner side of the outer wall faces the indoor space and the outer side faces the outdoors, and the bottom plate is arranged at the bottom side of the indoor space, characterized in that: The energy-saving fresh air air-conditioning system comprises: The main unit is formed with an air supply duct and a fresh air outlet, the air inlet end of the air supply duct can be selectively connected to the indoor space or the outdoors, the air outlet end of the air supply duct is connected to the fresh air outlet, the air supply duct is further provided with a temperature adjustment component and a fan component, the temperature adjustment component is used to heat and / or cool the airflow flowing through the air supply duct, and the fan component is used to drive the airflow from the air inlet end to the air outlet end; a floor air supply pipeline, located below the main unit and arranged on the upper side of the bottom plate, the floor air supply pipeline is used to connect the fresh air outlet and has an indoor air outlet, the floor air supply pipeline is provided with an air duct insulation layer at least on one side facing the bottom plate, and the air duct insulation layer is an aerogel composite material; and The external wall insulation layer is arranged on the inner side or the outer side of the external wall, and the external wall insulation layer includes an aerogel coating.

2. The energy-saving ground-air supply fresh air air conditioning system according to claim 1, characterized in that: The aerogel composite material is formed by secondary compounding of silicon dioxide nanoporous aerogel and fiber cotton.

3. The energy-saving ground-air supply fresh air air conditioning system according to claim 1, characterized in that: The aerogel coating is arranged on the outer side of the outer wall, and the aerogel coating includes an aerogel surface layer arranged on the outermost side and an aerogel middle insulation layer arranged between the aerogel surface layer and the outer wall. The components of the aerogel surface layer include resin, silica aerogel particles and glass beads, and the aerogel middle insulation layer includes resin and silica aerogel particles. The thickness of the aerogel middle insulation layer is greater than that of the aerogel surface layer.

4. The energy-saving ground-air supply fresh air air conditioning system according to claim 3, characterized in that: The exterior wall insulation layer also includes a primer layer arranged between the aerogel insulation layer and the exterior wall, and a putty layer arranged between the aerogel insulation layer and the aerogel surface layer.

5. The energy-saving ground-air supply fresh air air conditioning system according to any one of claims 1 to 4, characterized in that: The cross-section of the floor air supply duct has a horizontal dimension of L and a vertical dimension of H, and L is greater than or equal to 3H.

6. The energy-saving ground-air supply fresh air air conditioning system according to claim 5, characterized in that: The air duct insulation layer is arranged on the bottom side and the peripheral side of the floor air supply duct, the peripheral side is an extension between the upper side and the bottom side of the floor air supply duct, and the air duct insulation layer is not arranged on the upper side of the floor air supply duct.

7. The energy-saving ground-air supply fresh air air conditioning system according to claim 6, characterized in that: A heat-conducting layer is arranged on the upper side of the floor air supply pipeline, and the heat-conducting layer is used to be arranged on the lower side of the ground layer.

8. The energy-saving ground-air supply fresh air air conditioning system according to claim 7, characterized in that: The material of the heat conducting layer is metal.

9. The energy-saving ground-air supply fresh air air conditioning system according to claim 6, characterized in that: A partition is provided in the ground air supply duct to separate the air duct into an upper air duct and a lower air duct arranged in sequence in the up and down directions. The lower air duct is respectively provided with a first valve and a second valve at both ends in the air supply direction. When the first valve and the second valve are closed, the lower air duct is sealed.

10. The energy-saving ground-air supply fresh air air conditioning system according to any one of claims 1 to 4, characterized in that: The building also includes an inner wall, both sides of the inner wall are the indoor space, the energy-saving ground air supply fresh air air conditioning system also includes an air supply duct extending in the up and down directions, the upper end of the air supply duct is connected to the fresh air outlet, and the lower end is connected to the ground air supply pipeline, and the air supply duct is installed on the inner wall.

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