Energy-saving fresh air machine
By introducing a bypass valve and the heat exchange core in the new fan, the air circulation path is automatically adjusted according to the temperature difference, and the problems of poor ventilation and energy consumption when the temperature difference is small in the indoor and outdoor temperature difference are solved, and efficient and energy-saving air circulation is achieved under the condition of a small temperature difference.
Patent Information
- Application Number
- CN202422000848.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The temperature difference between indoor and outdoors of the existing new fans is small, and the flow rate is blocked when the air enters the heat exchange core, which affects the ventilation effect and does not have an energy-saving effect, but consumes energy.
A new energy-saving fan is designed, which adopts a parallel structure between the bypass valve and the heat exchange core. When the temperature difference between the indoor and outdoor is large, the bypass valve is closed, and the air is heat exchanged through the heat exchange core. When the temperature difference is not large, the bypass valve is opened, and the air is preferred to enter the room through the bypass valve to reduce resistance, and use the inlet fan to operate at low power to achieve efficient ventilation.
In the case of small indoor and outdoor temperature differences, the smoothness of air inlet is improved, energy consumption is reduced, efficient ventilation effect is maintained, and energy saving is achieved.
Smart Images
Figure CN223090781U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an energy-saving fresh air machine, belonging to the technical field of ventilation devices. Background Art
[0002] People in modern life are increasingly pursuing high-quality living standards, especially for the air quality in living and residential environments. For this reason, fresh air machines have emerged. A fresh air machine has a fresh air duct and an exhaust duct. The fresh air duct introduces outdoor air, and after filtration, heat exchange and other treatments, it is sent into the room, thus playing the role of filling fresh air into the room; the exhaust duct inhales indoor air, and after treatment, it is discharged outdoors, working together with the fresh air duct to ventilate the room. To achieve good energy-saving effects, a heat exchange core is usually used to realize heat exchange. The heat exchange core is arranged at the intersection of the fresh air duct and the exhaust duct, enabling heat exchange between the incoming air and the outgoing air. However, this only has good energy-saving effects when the temperature difference between indoors and outdoors is large. When the temperature difference between indoors and outdoors is small, heat exchange is not required. The air passing through the heat exchange core does not achieve energy-saving effects, but instead affects the ventilation effect due to the flow resistance when the air enters the heat exchange core. Content of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide an energy-saving fresh air machine, in which air enters the room through a valve when the temperature difference between indoors and outdoors is small, increasing the smoothness of air entry and solving the deficiencies of the prior art.
[0004] The technical solution of the utility model is: an energy-saving fresh air machine, including a housing, in which a fresh air duct, an exhaust duct, and a heat exchange core are arranged. The heat exchange core is respectively connected to the fresh air duct and the exhaust duct. An intake fan is arranged on the fresh air duct, and an exhaust fan is arranged on the exhaust duct. It includes a bypass valve, and the bypass valve and the heat exchange core are connected in parallel to the fresh air duct.
[0005] Further, it includes a controller. A plurality of temperature sensors are arranged in the housing. The bypass valve is an electric valve, and the bypass valve and the plurality of temperature sensors are connected to the controller through circuits.
[0006] Further, electric air valves are arranged at the inlet of the fresh air duct and the outlet of the exhaust duct.
[0007] Further, a sliding groove that is slidably connected to the heat exchange core is arranged in the housing, and a notch for the heat exchange core to enter and exit is arranged on the housing.
[0008] Further, the bypass valve is arranged on a sliding seat, and the sliding seat is slidably connected in the sliding groove.
[0009] The utility model provides an energy-saving fresh air fan. When the indoor-outdoor temperature difference is large, the bypass valve is in a closed state. When outdoor air enters the fresh air duct, it enters the room through the heat exchange core. When indoor air enters the exhaust duct, it is discharged outdoors through the heat exchange core. The incoming and outgoing air exchanges heat when passing through the heat exchange core. When the indoor-outdoor temperature difference is small, the bypass valve is in an open state. When outdoor air enters the fresh air duct, since the resistance is large when entering the heat exchange core, it preferentially enters the room through the bypass valve. Even when the operating power of the intake fan is small, it still has a large air intake, achieving the effect of energy saving. Description of the Drawings
[0010] Figure 1 It is a three-dimensional view of the present utility model;
[0011] Figure 2 It is a schematic diagram of the installation of the bypass valve and the heat exchange core;
[0012] Figure 3 It is a schematic diagram of the air flow direction of the present utility model.
[0013] As shown in the figure: housing 1; heat exchange core 2; intake fan 3; exhaust fan 4; bypass valve 5; electric air valve 6; sliding seat 7; sliding groove 8; fresh air inlet 10; fresh air outlet 11; exhaust air inlet 12; exhaust air outlet 13; temperature sensor 14. Detailed Embodiment
[0014] An embodiment of the present utility model: As Figures 1 to 3 shown, an energy-saving fresh air fan includes a housing 1. Inside the housing 1, there are a fresh air duct, an exhaust air duct, and a heat exchange core 2. The fresh air duct and the exhaust air duct intersect, and the heat exchange core 2 is arranged at the intersection. An intake fan 3 is provided on the fresh air duct, and an exhaust fan 4 is provided on the exhaust air duct. When the intake fan 3 operates, outdoor air enters the fresh air duct through the fresh air inlet 10 and is transported to the room through the fresh air outlet 11. When the exhaust fan 4 operates, indoor air enters the exhaust air duct through the exhaust air inlet 12 and is discharged outdoors through the exhaust air outlet 13. This application includes a bypass valve 5. The bypass valve 5 and the heat exchange core 2 are connected in parallel to the fresh air duct. When the indoor-outdoor temperature difference is large, the bypass valve 5 is in a closed state. When outdoor air enters the fresh air duct, it enters the room through the heat exchange core 2. When indoor air enters the exhaust air duct, it is discharged outdoors through the heat exchange core 2. The incoming and outgoing air exchanges heat when passing through the heat exchange core 2. The heat exchange core 2 is in a quadrangular prism shape, and air passes through from two opposite sides respectively to achieve heat exchange. When the indoor-outdoor temperature difference is small, the bypass valve 5 is in an open state. When outdoor air enters the fresh air duct, since the resistance is large when entering the heat exchange core 2, it preferentially enters the room through the bypass valve 5. Even when the operating power of the intake fan 3 is small, it still has a large air intake, achieving the effect of energy saving.
[0015] As a preference, it includes a controller. There are several temperature sensors 14 provided in the housing 1. The bypass valve 5 is an electric valve. The bypass valve 5 and several temperature sensors 14 are connected to the controller through wires. The temperature sensors 14 are arranged in the fresh air duct and the exhaust air duct to monitor the temperatures of the incoming air and the outgoing air. When the temperature difference is greater than the set value, the controller controls the bypass valve 5 to close. When it is less than the set value, the bypass valve 5 opens to achieve automatic adjustment.
[0016] As a preference, electric air valves 6 are provided at the fresh air inlet 10 of the fresh air duct and the exhaust air outlet 13 of the exhaust air duct. The electric air valves 6 are controlled by the controller. When the fresh air machine is running, the electric air valves 6 open the fresh air inlet 10 and the exhaust air outlet 13 respectively, allowing the indoor and outdoor air to freely enter and exit. When it stops running, the fresh air inlet 10 and the exhaust air outlet 13 are closed to prevent the indoor and outdoor air from entering and exiting, which is beneficial to maintaining the stability of the indoor temperature and can also prevent small animals, foreign objects, etc. from entering.
[0017] As a preference, a chute 8 for slidably connecting with the heat exchange core 2 is provided in the housing 1. The housing 1 is provided with a notch for the heat exchange core 2 to enter and exit, which is convenient for the installation, removal and replacement of the heat exchange core 2.
[0018] As a preference, the bypass valve 5 is arranged on the sliding seat 7. The sliding seat 7 is slidably connected in the chute 8. During installation, the sliding seat 7 provided with the bypass valve 5 is slidably connected to the chute 8 from the notch, and then the heat exchange core 2 is installed in the chute 8 to limit the bypass valve 5 between the inner wall of the housing 1 and the heat exchange core 2, which is convenient for installation.
Claims
1. A new energy-saving air exchanger, comprising a housing, wherein a fresh air duct, an exhaust air duct and a heat exchange core are arranged inside the housing, the heat exchange core is respectively connected with the fresh air duct and the exhaust air duct, an intake fan is arranged on the fresh air duct, and an exhaust fan is arranged on the exhaust air duct, and is characterized in that: It includes a bypass valve and a controller. The bypass valve and the heat exchange core are connected in parallel to the fresh air duct. A plurality of temperature sensors are provided inside the housing. The bypass valve is an electric valve. The bypass valve and the plurality of temperature sensors are connected to the controller through wires.
2. The energy-saving fresh air blower according to claim 1, characterized in that: Electric air valves are provided at the inlet of the fresh air duct and the outlet of the exhaust air duct.
3. The energy-saving fresh air fan according to claim 1, wherein: A chute for sliding connection with the heat exchange core is provided inside the housing, and a notch for the heat exchange core to enter and exit is provided on the housing.
4. The energy-saving fresh air fan according to claim 3, wherein: The bypass valve is provided on a sliding seat, and the sliding seat is slidably connected in the chute.