A ventilation device for heating, ventilation and air conditioning

Abstract

A ventilation system for HVAC, belonging to the field of HVAC technology, includes an exhaust box comprising a heat exchange area located inside the wall and a circulation area located outside the wall; a left-side high-temperature box composed of a portion of the heat exchange area and the circulation area, and a right-side low-temperature box composed of a portion of the heat exchange area and the circulation area; the heat exchange area of ​​the left-side high-temperature box is connected to an air inlet pipe communicating with a high-temperature zone at the top of the room or a high-temperature room, and the heat exchange area of ​​the right-side low-temperature box is connected to an air outlet pipe communicating with a zone at the bottom of the room or other rooms. Addressing the existing problem of preventing excessive air exchange indoors, thus leading to energy waste, this ventilation system provides a novel HVAC exhaust device that eliminates the need for an exhaust fan, enabling automatic, minimal fresh air exchange indoors.

Description

Technical Field

[0001] This application belongs to the field of heating, ventilation and air conditioning technology, and specifically relates to an exhaust device for heating, ventilation and air conditioning. Background Technology

[0002] Heating, ventilation, and air conditioning (HVAC) is an air conditioning system that provides heating, ventilation, and air conditioning functions. It is mainly used to regulate the temperature, humidity, and air quality inside a room or vehicle to create a comfortable artificial environment. HVAC systems are used in various building sectors, such as shopping malls, office buildings, industrial buildings, as well as special industries such as pharmaceuticals, electronics, mission-critical facilities, and oil and gas.

[0003] Existing HVAC systems, in order to maintain fresh indoor air, use exhaust fans to draw in and exhaust indoor air while introducing fresh outdoor air. However, those skilled in the art believe that this can lead to lower temperatures in certain areas of the room, often requiring air heating and increasing energy consumption. In a technical solution for an HVAC exhaust fan (CN221648723U), to address the energy waste issue, fresh air enters a coiled pipe, and the air inside the coiled pipe is heated by the indoor air in the exhaust duct. This temperature exchange raises the temperature of the fresh air, which is then delivered to the HVAC air inlet through a duct connected to the coiled pipe. However, in this solution, drawing in fresh outdoor air with an exhaust fan causes indoor air to expand, resulting in excessive gas exchange and not saving energy. Utility Model Content

[0004] The purpose of this invention is to address the existing problem of energy waste caused by preventing large-scale air exchange indoors, and to provide a novel HVAC exhaust device that eliminates the need for an exhaust fan and allows for automatic, weak fresh air exchange indoors.

[0005] To achieve the above-mentioned energy-saving and environmental protection objectives, this utility model provides the following technical solution: an exhaust device for HVAC, including an exhaust box, the exhaust box including a heat exchange area located inside the wall and a circulation area located outside the wall;

[0006] And a high-temperature box on the left, consisting of a partial heat exchange area and a circulation area, and a low-temperature box on the right, consisting of a partial heat exchange area and a circulation area.

[0007] The heat exchange area of ​​the high-temperature chamber on the left is connected to an air inlet pipe that connects to the high-temperature area at the top of the room or the high-temperature chamber, while the heat exchange area of ​​the low-temperature chamber on the right is connected to an air outlet pipe that connects to the bottom middle area of ​​the room or other chambers.

[0008] High-temperature gas enters the heat exchange area through the inlet pipe of the high-temperature chamber on the left, and then enters the circulation area; the gas in the circulation area enters the circulation area of ​​the low-temperature chamber on the right, and then undergoes secondary cooling in the heat exchange area before entering the outlet pipe together with the outside air.

[0009] In one possible implementation, a condenser tube assembly for HVAC is installed in the heat exchange area. The inlet of the condenser tube assembly is located at the low-temperature box on the right side. The condensate in the condenser tube assembly flows from the low-temperature box on the right side to the high-temperature box on the left side and then flows out through the outlet located on the low-temperature box on the right side or the high-temperature box on the left side.

[0010] In one implementation, a ventilation grille assembly is provided on the outer side of the circulation area. The grille assembly has a grille plate, and the grille plate is at an upward 45° angle to the side of the exhaust box.

[0011] In one possible implementation, a partition plate is provided between the left high-temperature box and the right low-temperature box. The partition plate includes a fixing part located in the heat exchange area. The fixing part is used to fix the side wall of the condenser tube assembly and the exhaust box.

[0012] And a flow-limiting section located in the flow area, which is used to allow gas in the right low-temperature chamber to flow into the left high-temperature chamber.

[0013] In one implementation, the flow-limiting part is provided with an inclined flow hole, which is inclined so that the opening of the flow hole in the low-temperature chamber on the right side is higher than the opening of the high-temperature chamber on the left side.

[0014] In one possible implementation, the fixing part has three sets of fixing holes with functional characteristics and arranged neatly; one set of fixing holes is provided with a condenser tube assembly, another set of fixing holes is provided with a reinforcing rod connecting the side wall of the exhaust box, and the remaining fixing holes are used for ventilation of the left high-temperature box and the left high-temperature box.

[0015] In one possible implementation, the air inlet of the air inlet pipe is located at the top high-temperature zone of the room or at the top of the high-temperature room and is upward or horizontal; the air outlet of the air outlet pipe is located at the bottom middle zone of the room or at the bottom middle of other rooms and is horizontal or downward.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This application eliminates the need for an exhaust fan, saving on the use of high-power electrical appliances and preventing resource waste. Furthermore, the absence of an exhaust fan prevents excessive airflow into the room, thus ensuring a stable indoor temperature and saving energy from frequent temperature adjustments. The connection between the circulation area and the outside ensures the entry of fresh air, and the grille assembly on the outer surface of the circulation area effectively prevents excessive gas exchange or the entry of outside air. Attached Figure Description

[0018] 1. Exhaust fan box; 2. Heat exchange area; 3. Circulation area; 4. Condensate coil assembly.

[0019] 11 High-temperature chamber on the left, 12 Low-temperature chamber on the right, 13 Inlet pipe, 14 Outlet pipe, 15 Divider plate, 151 Fixing part, 152 Flow limiting part, 153 Flow hole, 31 Grille assembly.

[0020] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0021] Figure 2 This is a front view of the partition plate in this embodiment;

[0022] Figure 3 for Figure 2 Sectional view of AA;

[0023] Figure 4 for Figure 2 Sectional view of BB;

[0024] Figure 5 This is a schematic diagram of the overall structure of the condenser tube assembly; Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figures 1 to 5 The first embodiment shown illustrates an exhaust system for HVAC systems. Its structure includes an exhaust box 1, comprising a heat exchange area 2 located inside the wall and a circulation area 3 located outside the wall; a left high-temperature box 11 formed by a portion of the heat exchange area 2 and the circulation area 3; and a right low-temperature box 12 formed by a portion of the heat exchange area 2 and the circulation area 3. The heat exchange area 2 of the left high-temperature box 11 is connected to an inlet pipe 13 communicating with a high-temperature area at the top of the room; the heat exchange area 2 of the right low-temperature box 12 is connected to an outlet pipe 14 communicating with a lower middle area of ​​the room. The inlet of the inlet pipe 13 is horizontal in the high-temperature area at the top of the room; the outlet of the outlet pipe 14 faces downwards in the lower middle area of ​​the room.

[0027] In this embodiment, a condenser tube assembly 4 for HVAC is provided in the heat exchange area 2. The inlet of the condenser tube assembly 4 is located at the right low temperature chamber 12. The condensate in the condenser tube assembly 4 flows through the right low temperature chamber 12 to the left high temperature chamber 11 and then flows out through the outlet located on the left high temperature chamber 11.

[0028] In this embodiment, a ventilation grille assembly 31 is provided on the outer side of the circulation area 3. The grille assembly 31 has a grille plate, which is at an upward 45° angle to the side of the exhaust box 1. A partition plate 15 is provided between the left high-temperature box 11 and the right low-temperature box 12. The partition plate 15 includes a fixing part 151 located in the heat exchange area 2, which is used to fix the condenser tube assembly 4 and the side wall of the exhaust box 1; and a flow-limiting part 152 located in the circulation area 3, which is used to allow gas in the right low-temperature box 12 to flow into the left high-temperature box 11. An inclined flow hole 153 is provided on the flow-limiting part 152. The flow hole 153 is inclined, and its opening in the right low-temperature box 12 is higher than the opening in the left high-temperature box 11. The fixing part 151 has three sets of fixing holes with functional characteristics and arranged neatly; one set of fixing holes is equipped with a condenser tube group 4, another set of fixing holes is equipped with a reinforcing rod connecting the side wall of the exhaust box 1, and the remaining fixing holes are used for ventilation of the left high temperature box 11 and the left high temperature box 11.

[0029] Example 2: A ventilation system for heating, ventilation, and air conditioning (HVAC) includes an exhaust box 1. The exhaust box 1 includes a heat exchange area 2 located inside the wall and a circulation area 3 located outside the wall; a left high-temperature box 11 formed by part of the heat exchange area 2 and the circulation area 3; and a right low-temperature box 12 formed by part of the heat exchange area 2 and the circulation area 3. The heat exchange area 2 of the left high-temperature box 11 is connected to an air inlet pipe 13 communicating with the high-temperature chamber, and the heat exchange area 2 of the right low-temperature box 12 is connected to an air outlet pipe 14 communicating with other chambers. The air inlet of the air inlet pipe 13 is at the top of the high-temperature chamber and is horizontal; the air outlet of the air outlet pipe 14 is in the lower part of the other chambers and faces downwards.

[0030] In this embodiment, a condenser tube assembly 4 for HVAC is provided in the heat exchange area 2. The inlet of the condenser tube assembly 4 is located at the right low temperature box 12. The condensate in the condenser tube assembly 4 flows through the right low temperature box 12 to the left high temperature box 11 and then flows out through the outlet located on the right low temperature box 12 or the left high temperature box 11.

[0031] The remaining structures in this embodiment are the same as in Embodiment 1.

[0032] In both Embodiments 1 and 2, the medium used to regulate indoor temperature flows within the condenser tube assembly 4. When cooling and maintaining air circulation are required, the high-temperature air is located at the top of the room. The high-temperature gas enters the heat exchange zone 2 through the inlet pipe 13 of the high-temperature chamber 11 on the left, and then enters the circulation zone 3. A portion of the cooled gas directly enters the heat exchange zone 2 of the low-temperature chamber 12 on the right. A portion of the gas in the circulation zone 3 enters the circulation zone 3 of the low-temperature chamber 12 on the right. To prevent the cooled gas from escaping, a grid assembly 31 blocks the flow, making it difficult for the denser gas to flow out. Since the gas volume decreases after cooling, gas needs to be replenished from outside the grid assembly 31. Because the external hot air is blocked by the grid assembly 31, only a small portion can flow directly upwards into the circulation zone 3 from the grid assembly 31. This small amount of incoming air is quickly diluted, satisfying the need for fresh air without requiring a large amount of energy for cooling. This portion of gas then undergoes secondary cooling in the heat exchange zone 2 and enters the outlet pipe 14 to reach the room. When the room needs to be heated and the air needs to be circulated, a closing plate can be installed at the grille assembly 31 to allow hot air to continuously flow into the room for internal circulation.

[0033] The foregoing, in conjunction with embodiments and accompanying drawings, clearly and completely describes the concept, specific structure, and resulting technical effects of this utility model, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions.

[0034] The above description of the specific embodiments of this utility model is only used to further illustrate this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made to this utility model by technical engineers based on the above description of the utility model shall fall within the scope of protection of this utility model.

Claims

1. A ventilation system for heating, ventilation, and air conditioning, comprising a ventilation box (1), characterized in that, The exhaust box (1) includes a heat exchange area (2) located inside the wall and a circulation area (3) located outside the wall; And a left high-temperature chamber (11) consisting of a portion of the heat exchange area (2) and the flow area (3), and a right low-temperature chamber (12) consisting of a portion of the heat exchange area (2) and the flow area (3); The heat exchange area (2) of the left high temperature box (11) is connected to an air inlet pipe (13) that communicates with the high temperature area at the top of the room or the high temperature room, and the heat exchange area (2) of the right low temperature box (12) is connected to an air outlet pipe (14) that communicates with the bottom area of ​​the room or other rooms. High-temperature gas enters the heat exchange area (2) through the inlet pipe (13) of the left high-temperature box (11) and then enters the circulation area (3); the gas located in the circulation area (3) enters the circulation area (3) of the right low-temperature box (12), and then enters the outlet pipe (14) together with the outside air after the secondary cooling of the heat exchange area (2).

2. The exhaust device for HVAC according to claim 1, characterized in that, The heat exchange area (2) is equipped with a condenser tube assembly (4) for HVAC. The inlet of the condenser tube assembly (4) is located at the right low temperature box (12). The condensate in the condenser tube assembly (4) flows through the right low temperature box (12) to the left high temperature box (11) and then flows out through the outlet located on the right low temperature box (12) or the left high temperature box (11).

3. The exhaust device for HVAC according to claim 1, characterized in that, A ventilation grille assembly (31) is provided on the outer side of the circulation area (3). The grille assembly (31) has a grille plate, which is at an upward 45° angle to the side of the exhaust box (1).

4. The exhaust device for HVAC according to claim 2, characterized in that, A partition plate (15) is provided between the left high temperature box (11) and the right low temperature box (12). The partition plate (15) includes a fixing part (151) located in the heat exchange area (2). The fixing part (151) is used to fix the side wall of the condenser tube group (4) and the exhaust box (1). And a flow restriction section (152) located in the flow area (3), the flow restriction section (152) being used to allow gas in the right low temperature chamber (12) to flow into the left high temperature chamber (11).

5. The exhaust device for HVAC according to claim 4, characterized in that, The flow limiting part (152) is provided with an inclined flow hole (153). The flow hole (153) is inclined and its opening in the right low temperature box (12) is higher than the opening in the left high temperature box (11).

6. The exhaust device for HVAC according to claim 4, characterized in that, The fixing part (151) has three sets of fixing holes with functional characteristics and arranged neatly; one part of the fixing holes is provided with the condenser tube group (4), another part of the fixing holes is provided with a reinforcing rod connecting the side wall of the exhaust box (1), and another part of the fixing holes is used for the ventilation of the left high temperature box (11) and the left high temperature box (11).

7. The exhaust device for HVAC according to claim 1, characterized in that, The air inlet of the air inlet pipe (13) is located in the high-temperature zone at the top of the room or at the top of the high-temperature room and is either upward or horizontal. The outlet of the vent pipe (14) is located in the lower part of the room or in other lower parts of the room and is horizontal or downward.

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