Evaporator assembly in air conditioner

Abstract

The evaporator assembly comprises an evaporator and a fan arranged on the evaporator, and further comprises an evaporator chamber, one face of the evaporator chamber is open, an air inlet is formed in the other side of the evaporator chamber, the evaporator is arranged in the evaporator chamber, and the air inlet can be opened or closed under driving of a driving motor. An electric heater for heating the surface of the evaporator is also arranged in the evaporator chamber; the fan is a bladeless fan, and an air ring of the bladeless fan is fixedly connected to the opening of the evaporator chamber. Condensed water on the surface of the evaporator can be removed before frosting, and the problem that the condensed water cannot be removed is solved.

Description

Technical Field

[0001] The invention relates to the field of air-conditioning evaporators, in particular to an evaporator component in an air-conditioner. Background Art

[0002] The air conditioner includes a compressor, a condenser equipped with a fan, an evaporator equipped with a fan, a throttling element, etc. The condenser is arranged on the outdoor side, and the evaporator is arranged on the indoor side. The high-temperature refrigerant output by the compressor dissipates heat to the outdoors through the condenser and its configured fan, and then enters the evaporator after the temperature is further reduced by the throttling element; the airflow formed by the evaporating fan passes through the evaporator, exchanges heat with the low-temperature refrigerant in the evaporator, thereby forming low-temperature wind and blowing it into the room.

[0003] The problem with the prior art air conditioner evaporator is that when working in a humid environment, water is easily condensed on the evaporator surface. When too much water is condensed, frost will occur. The prior art generally heats the evaporator surface with an electric heater to achieve defrosting when frost is condensed. This electric heating method can only perform defrosting and cannot solve the problem of condensation. Summary of the invention

[0004] The invention provides an evaporator assembly in an air conditioner to solve the problem that condensed water on the air conditioner evaporator in the prior art is difficult to remove.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: The evaporator assembly in the air conditioner includes an evaporator and a fan configured therefor, and is characterized in that it also includes an evaporator chamber, one side of the evaporator chamber is open to form an opening, the evaporator is arranged in the evaporator chamber, the side wall of the evaporator chamber is provided with an air inlet, and the air inlet can be opened or closed under the drive of a driving motor, and the evaporator chamber is also provided with an electric heater for heating the surface of the evaporator; the fan is a bladeless fan, and the air ring inlet end of the bladeless fan is fixedly connected to the opening of the evaporator chamber, so that the air ring inlet end of the bladeless fan is connected to the evaporator chamber through the opening of the evaporator chamber.

[0006] Furthermore, it also includes a controller, which is electrically connected to the motor of the bladeless fan, the drive motor of the air inlet, and the electric heater.

[0007] Furthermore, it also includes a condensation detection device, which is used to detect condensation on the surface of the evaporator, and the condensation detection device is electrically connected to the controller for signal transmission.

[0008] In the present invention, the evaporator is arranged in the evaporator room, the evaporator room has an air inlet that can be opened and closed, and the air ring air inlet end of the bladeless fan is connected to the evaporator room. When it is necessary to remove the condensed water on the evaporator surface, the air conditioner compressor is stopped, and the air inlet of the evaporator room is closed, so that the bladeless fan keeps working. Since the air ring air inlet end of the bladeless fan is connected to the evaporator room through the evaporator room opening, the negative pressure formed in the air ring when the bladeless fan is working will draw the air in the evaporator room, and then form a negative pressure in the evaporator room with the air inlet closed. Since the evaporator is in the evaporator room, when the negative pressure is formed in the evaporator room, the condensed water on the evaporator surface is in a negative pressure environment, and the boiling point of the condensed water is reduced. Then the electric heater is operated to heat the evaporator surface. At this time, the condensed water on the evaporator surface can be formed into water vapor without heating to an excessively high temperature. The water vapor is discharged under the wind force of the bladeless fan, thereby achieving the removal of the condensed water on the evaporator surface.

[0009] Compared with the prior art, the present invention can remove condensed water on the surface of the evaporator before frost condenses, thereby solving the problem that the evaporator of the prior art can only be defrosted by an electric heater and cannot remove condensed water. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention.

[0011] Figure 2 It is a schematic diagram of the control system structure of an embodiment of the present invention.

[0012] Figure 3 is an exemplary diagram of the air inlet of the evaporator chamber in an embodiment of the present invention. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0014] like Figure 1 As shown, this embodiment discloses an evaporator assembly in an air conditioner, including an evaporator chamber 1, an evaporator 2, and a fan and an electric heater 5 configured for the evaporator 2. The evaporator 2 is arranged in the evaporator chamber 1, the right side of the evaporator chamber 1 is open to form an opening, and the left side wall of the evaporator chamber 1 is provided with an air inlet 3, and an air inlet control mechanism driven by a drive motor 4 is installed in the air inlet 3, which can be opened or closed. When the drive motor 4 drives the air inlet control mechanism to open, the air inlet 3 is opened, and the external air can enter the evaporator chamber 1 through the air inlet 3 on the left side of the evaporator chamber 1; when the drive motor 4 drives the air inlet control mechanism to close, the air inlet 3 is closed, and the external air cannot enter the evaporator chamber 1 through the air inlet 3 on the left side of the evaporator chamber 1. The electric heater 5 contacts the surface of the evaporator 2 and is used to heat the surface of the evaporator 2. The pipe end of the evaporator 2 and the power line of the electric heater 5 pass through the side wall of the evaporator chamber 1 respectively.

[0015] In this embodiment, the fan is a bladeless fan 6. The bladeless fan 6 is a fan already known in the prior art, which generates airflow by driving the fan blades through the motor in the base. The airflow passes through the inner wall of the wind ring 6.1 of the bladeless fan 6 and then flows out from the air outlet on the inner wall of the wind ring 6.1 at high speed to the inside of the wind ring 6.1 (i.e., the inner ring space of the wind ring 6.1), and flows out from one axial end of the wind ring 6.1. Since the airflow flows out at high speed in the wind ring 6.1, negative pressure can be formed in the wind ring 6.1, so that the air outside the other axial end of the wind ring 6.1 enters the inside of the wind ring 6.1, thereby forming a continuous wind. Therefore, the axial end of the wind ring 6.1 for the high-speed airflow to flow out is the air outlet end of the wind ring, and the other axial end of the wind ring 6.1 is the air inlet end.

[0016] In this embodiment, the air inlet end of the air ring 6.1 of the bladeless fan 6 is fixed to the open end face of the evaporator chamber 1, and the air inlet end of the bladeless fan 6 is coaxially connected to the opening of the evaporator chamber 1, so that the inside of the air ring 6.1 of the bladeless fan 6 is connected to the inside of the evaporator chamber 1 through the opening of the evaporator chamber 1. When the bladeless fan 6 works until a negative pressure is formed in the air ring 6.1, the air in the evaporator chamber 1 will be drawn into the air ring 6.1. When the air inlet control mechanism of the air inlet 3 of the evaporator chamber 1 is closed, only the opening of the evaporator chamber 1 is connected to the inside of the air ring 6.1, and the bladeless fan continues to work, which will draw away the air in the evaporator chamber 1, thereby forming a negative pressure in the evaporator chamber 1, and at this time the evaporator 2 as a whole is in a negative pressure environment.

[0017] When the evaporator 2 is in a negative pressure environment, the condensed water on the surface of the evaporator 2 is also in a negative pressure environment, and the boiling point of water will be lowered in a negative pressure environment. At this time, the surface of the evaporator 2 is heated by the electric heater 5, so that the water on the surface of the evaporator 2 can be turned into water vapor without heating to an excessively high temperature. Under the action of the wind force generated by the bladeless fan 6, the water vapor will enter the air ring 6.1 from the right opening of the evaporator chamber 1 and finally be discharged from the air ring 6.1 to the outside, thereby achieving the dehydration function.

[0018] like Figure 2 As shown, this embodiment also includes a controller and a condensation detection device, and the condensation detection device is electrically connected to the controller for signal transmission. The controller is electrically connected to the motor of the bladeless fan, the drive motor 4 of the air inlet 3, and the electric heater 5 respectively, and the controller and the condensation detection device constitute a control system.

[0019] The condensation detection device is used to detect condensation on the surface of the evaporator 2 and transmit the detection data to the controller. The controller controls the motor of the bladeless fan 6, the drive motor 4 of the air inlet 3, and the electric heater 5 based on the received data to achieve the dewatering function.

[0020] In this embodiment, the condensation water detection device may use a photoelectric sensor, where the transmitting end of the photoelectric sensor emits a light signal to the surface of the evaporator 2, and the receiving end of the photoelectric sensor receives the reflected light signal from the surface of the evaporator 2. The controller obtains the reflected light signal from the receiving end and compares it with the pre-stored reflected light signal from the surface of the evaporator when there is no condensation water, thereby determining whether there is condensation water in the evaporator 2. In addition, the controller compares the condensation water data with a pre-set threshold value to determine whether the condensation water exceeds the preset threshold value.

[0021] Alternatively, the condensation water detection device may use a weight sensor, which collects the weight of the evaporator 2. The controller receives the data collected by the weight sensor and compares it with the pre-stored weight of the evaporator 2 when there is no condensation water, thereby determining whether there is condensation water in the evaporator 2. In addition, the controller compares the condensation water data with a preset threshold value to determine whether the condensation water exceeds the preset threshold value.

[0022] When the controller determines that condensed water exists and the condensed water exceeds a preset threshold, the controller closes the air inlet of the evaporator chamber 1, keeps the bladeless fan 6 working, and operates the electric heater 5, thereby completing the dewatering function.

[0023] In this embodiment, a water tank is provided in the evaporator chamber 1 at the lowest point of the evaporator 2 . When the condensed water does not exceed a preset threshold and the water removal function is not turned on, the water tank receives the condensed water falling from the surface of the evaporator 2 .

[0024] like Figure 3 As shown, in this embodiment, the air inlet control mechanism in the air inlet 3 of the evaporator chamber 1 is a shutter structure, the rotating shafts of each blade 8 in the shutter structure are connected by a synchronous pulley mechanism 7, the driving motor 4 is connected by a synchronous pulley mechanism 7, and the driving motor 4 drives each blade 8 to open or close synchronously in the air inlet 3 through the synchronous pulley mechanism 7, thereby realizing the opening or closing of the air inlet 3. It should be pointed out that although the shutter structure is used as the air inlet control mechanism for opening or closing the air inlet 3 of the evaporator chamber 1 in this embodiment, the technical solution based on this embodiment using other types of air inlet control mechanisms such as motor-driven air valves should also be regarded as falling within the protection scope of the present invention.

[0025] At the same time, although this embodiment is described by taking the right side of the evaporator chamber 1 as an opening and the left side as an air inlet as an example, the technical solution of setting openings and air inlets at other positions of the evaporator chamber 1 based on this embodiment should also be regarded as falling within the scope of protection of the present invention.

[0026] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. The embodiments described in the present invention are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. The various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction, and such combinations should also be regarded as the contents disclosed in the present disclosure as long as they do not violate the concept of the present invention. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0027] The present invention is not limited to the specific details of the above-mentioned embodiments. Within the scope of the technical concept of the present invention and without departing from the design concept of the present invention, various modifications and improvements made to the technical solution of the present invention by technical personnel in this field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. An evaporator assembly in an air conditioner, comprising an evaporator and a fan configured therefor, characterized in that: It also includes an evaporator chamber, one side of which is open to form an opening, the evaporator is arranged in the evaporator chamber, the side wall of the evaporator chamber is provided with an air inlet, and the air inlet can be opened or closed under the drive of a driving motor, and the evaporator chamber is also provided with an electric heater for heating the surface of the evaporator; the fan is a bladeless fan, and the air inlet end of the wind ring of the bladeless fan is fixedly connected to the opening of the evaporator chamber, so that the air inlet end of the wind ring of the bladeless fan is connected with the evaporator chamber through the opening of the evaporator chamber.

2. The evaporator assembly in the air conditioner according to claim 1, characterized in that: The utility model also comprises a controller, which is electrically connected to the motor of the bladeless fan, the driving motor of the air inlet, and the electric heater respectively.

3. The evaporator assembly in the air conditioner according to claim 2, characterized in that: It also includes a condensation detection device, which is used to detect condensation on the surface of the evaporator. The condensation detection device is electrically connected to the controller for signal transmission.

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