All fresh air overhead bus air conditioner

Abstract

An all fresh air overhead bus air conditioner comprises an evaporation part and a condensation part, the evaporation part comprises two sets of evaporation fans and evaporation core bodies which are symmetrically arranged, the two sets of evaporation fans are arranged on the outermost side, the two sets of evaporation core bodies are symmetrically arranged on the inner sides of the two sets of evaporation fans, and an air return opening is formed in the middle of the two sets of evaporation core bodies. An electric air valve is arranged on the air return opening and completely shields the air return opening, a first fresh air door is arranged on the side of the evaporation part, and the first fresh air door and the air return opening form an air conditioner air return channel. The utility model has the following beneficial effects: a full fresh air function can be realized, and the requirements of ventilation and air exchange of the passenger car and improvement of air quality in the car are met; control of the air return volume can be achieved, and an air return mode, a proportion-adjustable air mixing mode and a full fresh air mode are achieved.

Description

Technical Field

[0001] The utility model belongs to the field of bus air conditioners, and particularly relates to a completely fresh air roof-mounted bus air conditioner. Background Art

[0002] The roof-mounted bus air conditioner is an important component of a bus. When the air conditioner is turned on during the operation of the bus, the evaporation fan runs. The air inside the bus enters the roof-mounted bus air conditioner through the return air inlet, and then re-enters the bus after being cooled by the evaporation core. The air inside the bus circulates continuously in this way to achieve the cooling of the air inside the bus. With the improvement of the public's living standards, there are higher requirements for the travel experience. While requiring coolness, fresh and odorless air has also become a basic need. In addition, during the spring and autumn seasons, it has also become a problem that needs to be solved whether to turn on the air conditioner or not.

[0003] At present, the bus air conditioners generally adopt the scheme of introducing outdoor air to improve the air quality inside the bus. Specifically, a fresh air door is added to the evaporation part of the air conditioner, and whether the outdoor air enters the bus is controlled by the opening and closing of the fresh air door. When the air cooled by the air conditioner comes entirely from inside the bus, it is generally called that the air conditioner operates in the return air mode. When the air cooled by the air conditioner comes from both outside and inside the bus, it is generally called that the air conditioner operates in the mixed air mode. In the mixed air mode, the outdoor air enters the air conditioner through the fresh air door, mixes with the air from inside the bus at the return air inlet, enters the evaporation core for cooling, and then enters the bus again.

[0004] The existing technologies for controlling the operation mode of the air conditioner include the return air mode and the mixed air mode, and whether to open the fresh air door is determined according to the air condition inside the bus. When the air inside the bus is dirty, the fresh air door can be opened to introduce outdoor air to improve the air quality inside the bus. In the spring and autumn seasons, when it is cold with the air conditioner on and hot without the air conditioner on, the fresh air door can be opened to introduce outdoor air to cool the inside of the bus.

[0005] The existing fresh air control technologies can only open or close the fresh air door. When the fresh air door is closed, the air conditioner operates in the return air mode, and the air circulated through the air conditioner comes entirely from inside the bus. When the fresh air door is opened, the air conditioner operates in the mixed air mode, and the air circulated through the air conditioner comes from both inside and outside the bus; the air conditioner only has the return air mode and the mixed air mode.

[0006] The existing fresh air control technologies cannot control the intake volume of fresh air. The size of the fresh air intake volume depends on the air flow pressure at the fresh air inlet of the fresh air door and the air flow pressure at the return air inlet. Summary of the Utility Model

[0007] The technical problem to be solved by the utility model is that the existing fresh air control technologies cannot control the intake volume of fresh air. Therefore, the utility model provides a completely fresh air roof-mounted bus air conditioner.

[0008] To achieve the above object, the utility model is realized through the following technical solutions:

[0009] A brand-new top-mounted bus air conditioner includes an evaporation part and a condensation part. Among them, the evaporation part includes two groups of symmetrically arranged evaporation fans and evaporation cores. The outermost are two groups of evaporation fans, and two groups of evaporation cores are symmetrically arranged inside the two groups of evaporation fans. There is an air return opening in the middle of the two groups of evaporation cores, and an electric air valve is arranged on the air return opening. The electric air valve completely covers the air return opening. A first fresh air door is arranged on the side of the evaporation part, and the first fresh air door and the air return opening form an air return channel of the air conditioner.

[0010] The first fresh air door is located at the front side of the evaporation part, and a second fresh air door is arranged at the rear side of the evaporation part. The second fresh air door is exactly located between the evaporation part and the condensation part.

[0011] The first fresh air door and the second fresh air door have the same structure. Specifically: an air inlet is arranged on the side of the evaporation part, an electric hinge shaft is arranged on the housing above the air inlet, a baffle is installed on the electric hinge shaft, and the above-mentioned electric hinge shaft is connected to a motor, and the motor is connected to a controller.

[0012] The electric air valve is above or below the air return opening.

[0013] The electric air valve is an electric air valve with adjustable opening, and the electric air valve is connected to a controller.

[0014] Compared with the prior art, the present utility model has the following beneficial effects: It can realize the fresh air function, meet the ventilation and air exchange requirements of the bus, and improve the air quality in the vehicle; it can control the air return volume and realize the air return mode, adjustable proportion mixed air mode, and fresh air mode. Description of the Drawings

[0015] Figure 1 It is the overall structure diagram of the present utility model;

[0016] Figure 2 It is the overall structure diagram of the present utility model without an electric air valve;

[0017] Figure 3 It is the air return state diagram of the present utility model with an electric air valve;

[0018] Figure 4 It is the mixed air state diagram of the present utility model with an electric air valve;

[0019] Figure 5 It is the fresh air state diagram of the present utility model with an electric air valve;

[0020] Figure 6 It is the air return state diagram of the present utility model without showing the electric air valve;

[0021] Figure 7 It is the mixed air state diagram of the present utility model without showing the electric air valve. Detailed Implementation Modes

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0024] As Figure 1 、 Figure 2 shown, a brand-new fresh-air roof-mounted bus air conditioner includes an evaporation part 1 and a condensation part 2. Among them, the evaporation part 1 includes two groups of symmetrically arranged evaporation fans 11 and evaporation cores 12. The outermost sides are two groups of evaporation fans 11, and two groups of evaporation cores 12 are symmetrically arranged inside the two groups of evaporation fans 11. A return air outlet 3 is arranged between the two groups of evaporation cores 12. An electric air valve 4 is arranged on the return air outlet 3, and the electric air valve 4 can completely cover the return air outlet 3. A first fresh air door 5 is arranged on the side of the evaporation part 1, and the first fresh air door 5 and the return air outlet 3 form an air return channel of the air conditioner.

[0025] It should be noted that the condensation part 2 is a prior art.

[0026] Furthermore, the first fresh air door 5 is located on the front side of the evaporation part 1, and a second fresh air door 6 is arranged on the rear side of the evaporation part 1. The second fresh air door 6 is exactly located between the evaporation part 1 and the condensation part 2.

[0027] The first fresh air door 5 and the second fresh air door 6 have the same structure. Specifically: an air inlet is arranged on the side of the evaporation part 1, an electric hinge shaft is arranged on the housing above the air inlet, a baffle is installed on the electric hinge shaft, and the above-mentioned electric hinge shaft is connected to a motor, and the motor is connected to a controller. When the motor is started, the electric hinge shaft rotates, driving the baffle to open upward, and fresh air enters from the air inlet.

[0028] Furthermore, the electric air valve 4 is above or below the return air outlet 3.

[0029] In addition, the electric air valve 4 is an electric air valve with adjustable opening degree. The electric air valve 4 is connected to the controller, and the fresh air function and the adjustable proportion mixed air function are realized by controlling the return air volume of the return air outlet 3. The return air state of the return air outlet 3 is as Figure 3 shown.

[0030] After the controller controls the first fresh air door 5, the second fresh air door 6 and the electric air valve 4 to open together, the return air volume of the return air outlet 3 is controlled by controlling the opening degree of the electric air valve 4. At the same time, fresh air enters from the first fresh air door 5 and the second fresh air door 6 to realize the mixed air state, as Figure 4 shown.

[0031] When the controller controls the electric air valve 4 to close and the first fresh air door 5 and the second fresh air door 6 to open, only the fresh air on both sides enters, then the fresh air function is realized, as Figure 5 shown.

[0032] It should be noted that in the above-mentioned mixed air state and fresh air process, only one of the first fresh air door 5 and the second fresh air door 6 can be opened, or both can be opened.

[0033] The key of the present utility model lies in controlling the air volume of the return air outlet 3, and the control device is the electric air valve 4. The electric air valve 4 has various styles, and can be integral or multi-segment.

[0034] The working principle of the present utility model is:

[0035] Compared with the existing fresh air door control technology, the fresh air control scheme of the present application adds an electric air valve 4 at the air conditioner return air outlet. By controlling the opening degree of the electric air valve 4, the air volume passing through the return air outlet 3 can be controlled. The size of the air volume at the return air outlet 3 affects the air intake volume at the first fresh air door 5. The amount of outdoor air entering the vehicle is realized. The present utility model has little change to the product structure, is convenient to realize, and can be made into an optional scheme.

[0036] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those skilled in the art, without departing from the overall concept of the present utility model, several changes and improvements can still be made, and these should also be regarded as the protection scope of the present utility model.

Claims

1. A completely fresh air top-mounted bus air conditioner, characterized in that: It includes an evaporation part (1) and a condensation part (2). Among them, the evaporation part (1) includes two sets of symmetrically arranged evaporation fans (11) and evaporation cores (12). The outermost sides are two sets of evaporation fans (11), and two sets of evaporation cores (12) are symmetrically arranged inside the two sets of evaporation fans (11). There is an air return opening (3) arranged in the middle of the two sets of evaporation cores (12). An electric air valve (4) is arranged on the air return opening (3), and the electric air valve (4) completely covers the air return opening (3). A first fresh air door (5) is arranged on the side of the evaporation part (1), and the first fresh air door (5) and the air return opening (3) form an air return channel of the air conditioner.

2. The all - fresh air roof - mounted bus air conditioner according to claim 1, characterized in that: The first fresh air door (5) is located at the front side of the evaporation part (1), and a second fresh air door (6) is arranged at the rear side of the evaporation part (1). The second fresh air door (6) is exactly located between the evaporation part (1) and the condensation part (2).

3. A completely fresh air top-mounted bus air conditioner according to claim 1, characterized in that: The first fresh air door (5) and the second fresh air door (6) have the same structure. Specifically: there is an air inlet arranged on the side of the evaporation part (1), an electric hinge shaft is arranged on the housing above the air inlet, a baffle is installed on the electric hinge shaft, and the above-mentioned electric hinge shaft is connected to a motor, and the motor is connected to a controller.

4. A completely fresh air rooftop bus air conditioner according to claim 1, characterized in that: The electric air valve (4) is above or below the air return opening (3).

5. A brand-new fresh-air roof-mounted bus air conditioner according to claim 1, characterized in that: The electric air valve (4) is an electric air valve with adjustable opening degree, and the electric air valve (4) is connected to a controller.

Images