Kitchen linkage fresh air machine air supplement system suitable for ultra-low energy consumption building

Abstract

The utility model relates to the field of building ventilation, in particular to a kitchen linkage fresh air machine air supplement system suitable for an ultra-low energy consumption building. A kitchen linkage fresh air machine air supplement system suitable for an ultra-low energy consumption building comprises a kitchen fresh air supplement system and an air supplement linkage control system, and is characterized in that the kitchen air supplement system comprises a heat recovery fresh air machine, an air pipe and an air diffuser. The instant heat recovery fresh air unit has the advantages that the instant heat recovery fresh air unit and the smoke exhaust ventilator are linked to supplement air, damage to an airtight layer of an ultra-low-energy-consumption building due to the fact that holes are additionally formed in the outer wall of a kitchen is avoided, and the air quality problem caused by the fact that untreated fresh air is directly fed into a room is avoided; and meanwhile, the temperature of the fresh air subjected to heat recovery does not have great influence on the temperature of the kitchen area, and the good quality of the room environment is maintained.

Description

Technical Field

[0001] This invention relates to the field of building ventilation, and more particularly to a kitchen-linked fresh air supply system suitable for ultra-low energy consumption buildings. Background Technology

[0002] To achieve efficient ultra-low energy building ventilation without generating additional building energy consumption, ultra-low energy buildings typically employ heat recovery fresh air units to reuse the waste heat from indoor exhaust air. This heat is used to pre-cool or reheat outdoor fresh air entering the building, ensuring the quality of the incoming fresh air. For apartment buildings, the units are often installed in the ceiling space of the kitchen or bathroom, away from areas where people frequently move around. This avoids the noise generated by the unit during operation from affecting the comfort of people in the living room, bedroom, and other areas. Furthermore, since the fresh air unit is installed in the ceiling space of the kitchen or bathroom, there is no need for a false ceiling in the living room or bedroom, thus not affecting the height of these areas.

[0003] Introducing fresh air directly through openings in the kitchen's exterior walls is a common method for kitchen make-up air. Two examples are presented: a kitchen make-up air system (publication number CN 212108908 U) and an ultra-low energy passive house kitchen make-up air system with ductwork penetrating the exterior wall (publication number CN 213897570 U). Introducing fresh air through these openings, under negative pressure, allows the fresh air to carry cooking fumes through the range hood and into the exhaust shaft, ensuring ventilation in the kitchen. However, for ultra-low energy buildings, directly introducing untreated outdoor fresh air into the kitchen can cause the average kitchen temperature to be lower or higher than the design value, which is detrimental to maintaining a balanced temperature field within the airtight zone of the ultra-low energy building, especially noticeable in winter and summer. Furthermore, directly introducing fresh air through openings in the kitchen's exterior walls places higher demands on the airtightness of the ductwork penetrating the wall. Summary of the Invention

[0004] To address the aforementioned issues, this invention proposes a kitchen-linked fresh air supply system suitable for ultra-low energy consumption buildings. The fresh air unit is a heat recovery fresh air unit with heat recovery and air filtration functions, installed within the kitchen ceiling space. Outdoor fresh air enters the heat recovery fresh air unit through the fresh air duct, undergoes two stages of air filtration, and exchanges heat with the return air, thus pre-cooling or preheating the outdoor fresh air before it is delivered into the kitchen.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A kitchen-linked fresh air supply system for ultra-low energy consumption buildings includes a kitchen supply air system and a supply air linkage control system. The kitchen supply air system includes a heat recovery fresh air unit, air ducts, and diffusers. The heat recovery fresh air unit includes air outlets, filters, a heat recovery module, a fan, air valves, and a housing. The air outlets include fresh air inlets, supply air inlets, return air inlets, exhaust air inlets, and supply air inlets. The filters include coarse filters and medium-efficiency filters. The fans include fresh air fans, supply air fans, and exhaust air fans. The air valves include fresh air valves and supply air valves.

[0007] Furthermore, the fresh air fan, the make-up air fan, and the exhaust fan are respectively fixed to the bottom shell of the heat recovery fresh air fan with bolts. A metal partition is provided between the fresh air fan and the make-up air fan. Fresh air valves and make-up air valves are respectively installed on the metal partitions at the front end of the fresh air fan and the make-up air fan. Fresh air inlets and make-up air inlets are respectively provided at the rear. The fresh air inlets and make-up air inlets are respectively connected to the galvanized steel plate fresh air duct and make-up air duct through metal flexible connections. An exhaust outlet is provided at the outlet of the exhaust fan. The exhaust outlet is connected to the galvanized steel plate exhaust duct through metal flexible connections.

[0008] Furthermore, the fresh air inlet is connected to the fresh air duct via a flexible metal hose. The fresh air duct is made of galvanized steel sheet and is covered with an insulation layer. The insulation layer material has a fire-retardant rating.

[0009] A coarse filter is installed at the fresh air inlet. The coarse filter is fixed to the housing of the heat recovery fresh air unit with bolts. A medium-efficiency filter is installed behind the coarse filter and in front of the heat recovery module. The medium-efficiency filter is fixed to the housing of the heat recovery unit and the heat recovery module with bolts.

[0010] Furthermore, the heat recovery module fins are aluminum fins, the heat recovery module has a square or rectangular structure, the heat recovery module is fixed diagonally to the side wall of the heat recovery fresh air unit housing by bolts, and the bottom is fixed by bolts.

[0011] Furthermore, sealing strips are affixed to the heat recovery module and fin connection points, as well as the heat recovery unit housing connection points. Flame-retardant or non-combustible insulation material is applied to the exposed metal plate surface inside the heat recovery fresh air unit's metal housing.

[0012] Furthermore, the aforementioned air supply duct is connected to the ceiling of the kitchen, and a diffuser is connected to the end of the kitchen air supply duct. The diffuser is fixed to the duct with self-tapping screws.

[0013] The beneficial effects achieved by this utility model are that the heat recovery fresh air unit and the range hood work together to replenish air, which avoids the damage to the airtight layer of the ultra-low energy consumption building caused by additional openings in the kitchen exterior wall, and avoids the air quality problems caused by untreated fresh air being directly sent into the room. At the same time, the temperature of the fresh air that has undergone heat recovery will not have a significant impact on the temperature of the kitchen and dining area, thus maintaining a good quality of room environment. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of the heat recovery fresh air unit of this utility model.

[0015] Figure 2 This is a schematic cross-sectional view of the kitchen installation of this utility model.

[0016] Figure 3 This is a schematic diagram of the linkage control system of this utility model.

[0017] Figure label:

[0018] 1—Heat recovery fresh air unit; 2—Make-up air inlet; 3—Fresh air inlet; 4—Supply air outlet; 5—Return air outlet; 6—Exhaust air outlet; 7—Coarse filter; 8—Medium filter; 9—Heat recovery module; 10—Fresh air fan; 11—Make-up air fan; 12—Exhaust air fan; 13—Fresh air valve; 14—Make-up air valve; 15—Housing; 16—Make-up air duct; 17—Diffuser; 18—Exhaust air duct; 19—Range hood; 20—Control line. Detailed Implementation

[0019] This utility model provides a kitchen-linked fresh air supply system suitable for ultra-low energy consumption buildings, including a kitchen supply air system and a supply air linkage control system, wherein the kitchen supply air system includes a heat recovery fresh air unit, air ducts and diffusers.

[0020] The embodiments of this utility model will be further described in detail below through examples and with reference to the accompanying drawings.

[0021] A kitchen-linked fresh air supply system suitable for ultra-low energy consumption buildings is disclosed. The heat recovery fresh air unit 1 includes an air outlet, a filter, a heat recovery module 9, a fan, a damper, and a housing 15. The air outlets include a makeup air outlet 2, a fresh air outlet 3, a supply air outlet 4, a return air outlet 5, and an exhaust air outlet 6. The filter includes a coarse filter 7 and a medium-efficiency filter 8. The fan includes a fresh air fan 10, a makeup air fan 11, and an exhaust fan 12. The electrically operated dampers include a fresh air damper 13 and a makeup air damper 14. The fresh air outlet 3 is connected to a fresh air duct via a flexible metal hose, and the fresh air duct is made of galvanized steel. The fresh air duct is externally covered with an insulation layer, the insulation material of which has a flame-retardant fire resistance rating. A coarse filter 7 is installed at the fresh air inlet 3. Outdoor fresh air enters the heat recovery fresh air unit 1 through the fresh air duct and then passes through the pre-filter 7. The coarse filter 7 is bolted to the side wall of the housing 15 of the heat recovery fresh air unit 1. The coarse filter 7 filters out suspended particles of 5μm and above and settled particles of 10μm and above present in the outdoor fresh air. Before reaching the heat recovery module 9, the outdoor fresh air undergoes both coarse and medium-efficiency filtration. The medium-efficiency filter 8 is bolted to both the housing 15 of the heat recovery unit 1 and the heat recovery module 9. The medium-efficiency filter 8 filters out particles of 1μm and above in the outdoor fresh air. These two stages of filtration (coarse and medium efficiency) ensure the quality of the incoming indoor fresh air. After these two stages of filtration, the outdoor fresh air enters the heat recovery module 9. The heat recovery module 9 has aluminum fins inside and is a square or rectangular plate structure. It is diagonally fixed to the side wall of the housing 15 of the heat recovery fresh air unit 1 with bolts, and the bottom is also fixed with bolts. In winter, it serves as a channel for heat exchange between low-temperature outdoor fresh air and high-temperature indoor return air; in summer, it serves as a channel for heat exchange between high-temperature outdoor fresh air and low-temperature indoor return air. Sealing strips are affixed to the heat recovery module 9, the fin connections, and the housing 15 connections of the heat recovery unit 1 to ensure the unit's airtightness and the high recovery efficiency of the heat recovery module 9. The exposed metal plate inside the metal housing 15 of the heat recovery fresh air unit 1 is covered with flame-retardant or non-combustible insulation material. The fresh air fan 10, the makeup air fan 11, and the exhaust fan 12 are respectively fixed to the bottom housing 15 of the heat recovery fresh air unit 1 with bolts, and a metal partition is provided between the fresh air fan 10 and the makeup air fan 11. Fresh air valve 13 and make-up air valve 14 are respectively installed on the metal partitions at the front ends of the fresh air fan 10 and the make-up air fan 11. Air supply outlet 4 and make-up air outlet 2 are respectively installed at the rear. Air supply outlet 4 and make-up air outlet 2 are connected to the galvanized steel sheet air supply duct and make-up air duct 16 respectively via flexible metal connectors. Exhaust outlet 6 is installed at the outlet of exhaust fan 12, and exhaust outlet 6 is connected to the galvanized steel sheet exhaust duct 18 via flexible metal connectors. The make-up air duct 16 is connected to the ceiling of the kitchen, and a diffuser 17 is connected to the end of the make-up air duct 16. The diffuser 17 is fixed to the make-up air duct 16 with self-tapping screws.The range hood 19 and the heat recovery fresh air unit 1 are connected by a control line 20, which serves as a signal transmission channel. When the range hood 19 is manually turned on, the signal is sent to the heat recovery fresh air unit 1 via the control line 20. The air supply valve 14 opens, and the outdoor fresh air, which has undergone two stages of filtration and heat recovery, is delivered into the kitchen through the air supply fan 11 and the diffuser 17 installed in the kitchen ceiling.

[0022] To meet the ventilation needs of ultra-low energy buildings, the heat recovery fresh air unit is activated by default while people are indoors. Based on this, a kitchen-linked fresh air unit make-up air system suitable for ultra-low energy buildings can operate in two modes, as follows:

[0023] 1) Fresh Air Operation Mode: This mode is applicable outside of mealtimes, meaning it meets the indoor fresh air needs without requiring kitchen make-up air. In this mode, the heat recovery fresh air unit 1 is manually turned on, the fresh air valve 13 is opened, and fresh air passes through the fresh air duct and fresh air inlet 3. After being filtered by the pre-filter 7 and the medium-efficiency filter 8 and exchanging heat with the indoor exhaust air, the fresh air is then delivered to the living room, bedroom, and other areas through the air supply outlet 4 and the air supply duct, driven by the fresh air fan 10 and the fresh air valve 13. At this time, the make-up air valve 14 is closed.

[0024] 2) Kitchen Makeup Air + Fresh Air Operation: This operation is suitable for mealtimes, meeting both the fresh air needs of the living room and other areas, as well as the makeup air needs of the kitchen. In this case, the heat recovery fresh air unit 1 is manually turned on, and the fresh air valve 13 is opened. The range hood 19 is also manually turned on, and the signal is transmitted to the heat recovery fresh air unit 1 via control line 20, opening the makeup air valve 14. At this time, fresh air passes through the fresh air duct and fresh air inlet 3, is filtered by the pre-filter 7 and the medium-efficiency filter 8, and reaches the heat recovery module 9. After heat exchange with the return air, the treated fresh air passes through the fresh air valve 13 and the makeup air valve 14, and is then delivered to the living room and kitchen through the supply air duct and makeup air duct 16, respectively.

[0025] A kitchen-linked fresh air supply system for ultra-low energy buildings is proposed. A single device can meet the fresh air needs of public areas such as the living room, as well as the supply air needs of the kitchen. At the same time, while ensuring the quality of the fresh air supplied to the room, it avoids the discomfort caused by outdoor fresh air directly entering the kitchen, thus aligning with the comfortable and healthy design concept of ultra-low energy buildings.

[0026] The above specific embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A kitchen-linked fresh air supply system for ultra-low energy consumption buildings, comprising a kitchen supply air system and a supply air linkage control system, characterized in that, The kitchen make-up air system includes a heat recovery fresh air unit, air ducts, and diffusers; The heat recovery fresh air unit includes an air outlet, a filter, a heat recovery module, a fan, a damper, and a housing. The air outlet includes a fresh air outlet, a supply air outlet, a return air outlet, an exhaust air outlet, and a makeup air outlet. The filter includes a coarse filter and a medium-efficiency filter. The fan includes a fresh air fan, a makeup air fan, and an exhaust air fan. The damper includes a fresh air damper and a makeup air damper. The fresh air fan, makeup air fan, and exhaust fan are respectively fixed to the bottom shell of the heat recovery fresh air fan with bolts. A metal partition is provided between the fresh air fan and the makeup air fan. Fresh air valve and makeup air valve are respectively installed on the metal partition at the front end of the fresh air fan and the makeup air fan. Fresh air inlet and makeup air inlet are respectively provided at the rear. Fresh air inlet and makeup air inlet are respectively connected to galvanized steel plate fresh air duct and makeup air duct through metal flexible connectors. Exhaust air outlet is provided at the outlet of the exhaust fan. Exhaust air outlet is connected to galvanized steel plate exhaust air duct through metal flexible connector.

2. The kitchen-linked fresh air supply system for ultra-low energy consumption buildings according to claim 1, characterized in that: The fresh air inlet is connected to the fresh air duct via a flexible metal hose. The fresh air duct is made of galvanized steel sheet and is covered with an insulation layer. The insulation layer material has a fire resistance rating of flame retardant.

3. The kitchen-linked fresh air supply system for ultra-low energy consumption buildings according to claim 1, characterized in that: A coarse filter is installed at the fresh air inlet. The coarse filter is fixed to the heat recovery fresh air unit housing with bolts. A medium-efficiency filter is installed behind the coarse filter and in front of the heat recovery module. The medium-efficiency filter is fixed to the heat recovery unit housing and the heat recovery module with bolts.

4. The kitchen-linked fresh air supply system for ultra-low energy consumption buildings according to claim 1, characterized in that: The heat recovery module has aluminum fins and a square or rectangular structure. The heat recovery module is fixed diagonally to the side wall of the heat recovery fresh air unit housing with bolts, and the bottom is fixed with bolts.

5. The kitchen-linked fresh air supply system for ultra-low energy consumption buildings according to claim 1, characterized in that: Sealing strips are affixed to the heat recovery module and fin connections, as well as the heat recovery unit housing connections. Flame-retardant or non-combustible insulation material is applied to the exposed metal plate inside the heat recovery fresh air unit's metal housing.

6. The kitchen-linked fresh air supply system for ultra-low energy consumption buildings according to claim 1, characterized in that: The make-up air duct is connected to the ceiling of the kitchen, and the end of the kitchen make-up air duct is connected to a diffuser, which is fixed to the duct with self-tapping screws.

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