Indoor air conditioning unit

Abstract

The indoor air conditioning unit has the advantage of being low in energy consumption. An air supply outlet is formed in the top end face of the case, a fresh air inlet is formed in the bottom end face of the case, and an indoor air return inlet is formed in the position, close to the bottom end face, of the front end face of the case; the air feeder is arranged at the position, close to the top end face, in the case, the air feeder is fixed to the case through an air feeder mounting plate, and an air feeding cavity is formed between the air feeder mounting plate and the top end face of the case; the air filter is arranged at the position, close to the bottom end face, in the case, a heat exchange cavity is formed between the air filter and the air feeder mounting plate, and a fresh air cavity is formed between the air filter and the bottom end face of the case; the evaporator is arranged on an evaporator fixing plate, and the evaporator fixing plate is fixedly arranged in the heat exchange cavity; and the air valve mechanism is arranged in the fresh air cavity and used for controlling opening and closing of the fresh air opening and the indoor air return opening, and by controlling the air valve mechanism, switching operation of the indoor air conditioning unit among a fresh air natural cooling mode, a mechanical refrigeration mode and a mixed refrigeration mode can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning equipment, in particular to an indoor air conditioning unit. BACKGROUND

[0002] In the whole mobile communication network, the energy consumption of base station accounts for about 72%, and in the base station, the energy consumption of air conditioner accounts for about 56%. Therefore, the large energy consumption of base station air conditioner is a problem that needs to be solved through technical innovation. The air-cooled direct expansion air conditioning unit in the prior art has a single operation mode and huge energy consumption, so there is an urgent need for an air conditioning unit with low energy consumption. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides an indoor air conditioning unit, which specifically comprises: a cabinet, a supply air outlet is arranged on the top end face of the cabinet, a fresh air outlet is arranged on the bottom end face of the cabinet, and an indoor return air outlet is arranged on the front end face of the cabinet close to the bottom end face; a supply fan is arranged in the cabinet close to the top end face, the supply fan is fixed to the cabinet through a supply fan mounting plate, and a supply air cavity is formed between the supply fan mounting plate and the top end face of the cabinet; an air filter is arranged in the cabinet close to the bottom end face, a heat exchange cavity is formed between the air filter and the supply fan mounting plate, a fresh air cavity is formed between the air filter and the bottom end face of the cabinet; an evaporator is arranged on an evaporator fixing plate, and the evaporator fixing plate is fixedly arranged in the heat exchange cavity; and a damper mechanism is arranged in the fresh air cavity and used for controlling the opening and closing of the fresh air outlet and the indoor return air outlet, so that the indoor air conditioning unit can be switched between a fresh air natural cooling mode, a mechanical refrigeration mode and a mixed refrigeration mode through control of the damper mechanism.

[0004] Compared with the air conditioning unit in the prior art, the fresh air outlet is added in the above specific structure. When the outdoor temperature is low, the fresh air natural cooling mode can be used. When the outdoor temperature is high, the mechanical refrigeration mode can be used. When the outdoor temperature is high but lower than the return air temperature, the mixed refrigeration mode can be used. Therefore, the energy consumption of the indoor air conditioning unit can be reduced.

[0005] As a possible implementation manner, the damper mechanism comprises: a damper actuator fixedly arranged in the fresh air cavity and used for executing the control instruction of an external controller on the damper mechanism; a damper bearing arranged on the damper actuator and capable of being driven by the damper actuator; and a damper blade, one end of which is connected to the damper bearing and capable of covering the fresh air outlet or the indoor return air outlet through rotation of the damper bearing.

[0006] With the above possible implementation manners, the air valve bearing on the air valve actuator drives the air valve blade to rotate. When the air valve blade covers the indoor return air outlet, the indoor air conditioning unit enters the natural cooling mode of fresh air; when the air valve blade covers the fresh air outlet, the indoor air conditioning unit enters the mechanical refrigeration mode; when the air valve blade does not cover the indoor return air outlet and the fresh air outlet, the indoor air conditioning unit enters the mixed refrigeration mode. In the mixed mode, the proportion of outdoor air entering can be adjusted through the angle of the air valve blade, so as to control the return air temperature.

[0007] As a possible implementation manner, the heat exchange cavity is provided with an L-shaped water pan, which includes a water pan fixed end and a water pan protruding part. The water pan fixed end is fixedly connected with the side wall of the cabinet, and the water pan protruding part extends perpendicularly from the water pan fixed end close to one end of the air filter. The evaporator is connected with the water pan fixed end or the water pan protruding part.

[0008] As a possible implementation manner, the evaporator fixing plate is obliquely arranged in the heat exchange cavity, and one end of the evaporator fixing plate close to the air filter is in contact with the water pan protruding part.

[0009] As a possible implementation manner, the bottom end surface of the cabinet is provided with a drain port, and the drain port is connected to the connection between the water pan fixed end and the water pan protruding part through a water pipe.

[0010] As a possible implementation manner, the air supply cavity is provided with an electrical wiring box; the fresh air outlet is provided with a sealing plate, and the sealing plate is provided with a plurality of knock-off holes of different shapes.

[0011] With the above possible implementation manners, the plurality of knock-off holes of different shapes can adapt to air supply pipes of various shapes.

[0012] As a possible implementation manner, the bottom end surface of the cabinet is provided with a three-way stop valve, and the evaporator is connected with an outdoor unit through the three-way stop valve. The outdoor unit is provided with a mechanical refrigeration device.

[0013] As a possible implementation manner, the cabinet is provided with a plurality of mounting legs for fixing the indoor air conditioning unit, and each mounting leg is provided with a fixing groove. BRIEF DESCRIPTION OF DRAWINGS

[0014] The various technical features of the present application and the relationship between them will be further illustrated below with reference to the accompanying drawings. The drawings are exemplary, some technical features are not shown in actual proportion, and some technical features in the drawings can be omitted, which are conventional in the technical field to which the present application belongs and are not essential to understanding and implementing the present application, or additional technical features are shown, which are not essential to understanding and implementing the present application. That is, the combination of various technical features shown in the drawings is not used to limit the present application. In addition, the same reference signs refer to the same contents throughout the present application. The specific drawings are as follows:

[0015] Figure 1 It is a front view of an embodiment of the indoor air conditioning unit related to the present application.

[0016] Figure 2 It is a top view of an embodiment of the indoor air conditioning unit related to the present application.

[0017] Figure 3 It is a bottom view of an embodiment of the indoor air conditioning unit related to the present application.

[0018] Figure 4 It is a sectional view of an embodiment of the indoor air conditioning unit related to the present application in a fresh air natural cooling mode.

[0019] Figure 5 It is a sectional view of an embodiment of the indoor air conditioning unit related to the present application in a mechanical refrigeration mode.

[0020] Figure 6 It is a sectional view of an embodiment of the indoor air conditioning unit related to the present application in a mixed refrigeration mode.

[0021] Figure 7 It is a sectional view of an embodiment of the indoor air conditioning unit related to the present application in a wall-mounted installation state.

[0022] Figure 8 It is a sectional view of an embodiment of the indoor air conditioning unit related to the present application in a ceiling-mounted installation state.

[0023] Explanation of reference signs: 10 - case; 11 - supply air cavity; 12 - supply air port; 13 - heat exchange cavity; 14 - fresh air cavity; 15 - indoor return air port; 16 - fresh air port; 161 - sealing plate; 162 - knock-off hole; 17 - mounting leg; 18 - three-way stop valve; 19 - drain port; 20 - supply air duct; 30 - outdoor unit; 100 - supply air fan; 110 - supply air fan mounting plate; 200 - evaporator; 210 - evaporator fixing plate; 300 - L-shaped water collecting pan; 310 - water collecting pan fixing end; 320 - water collecting pan protruding part; 400 - air filter; 510 - air damper actuator; 520 - air damper bearing; 530 - air damper blade; 600 - electrical wiring box. DETAILED DESCRIPTION

[0024] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0025] The present application provides an indoor air conditioning unit with low energy consumption. As shown in Figure 4 、 5 , 6, specifically composed of a cabinet 10, a supply fan 100, an air filter 400, an evaporator 200 and a damper mechanism.

[0026] Among them, as shown in Figure 4 、 5 , 6, the cabinet 10 is a rectangular structure, and the top end face is provided with a supply air port 12, which is in communication with the indoor environment. The bottom end face of the cabinet 10 is provided with a fresh air port 16, which is in communication with the outdoor environment. The positive end face is provided with an indoor return air port 15 near the bottom end face, which is in communication with the indoor environment.

[0027] Among them, as shown in Figure 4 、 5 , 6, the supply fan 100 is arranged in the cabinet 10 near the top end face. The supply fan 100 is fixed with the cabinet 10 through the supply fan mounting plate 110. The supply fan mounting plate 110 and the top end face of the cabinet 10 form a supply air cavity 11.

[0028] Among them, as shown in Figure 4 、 5 , 6, the air filter 400 is arranged in the cabinet 10 near the bottom end face. The air filter 400 and the supply fan mounting plate 110 form a heat exchange cavity 13. The air filter 400 and the bottom end face of the cabinet 10 form a fresh air cavity 14.

[0029] Among them, as shown in Figure 4 、 5 , 6, the evaporator 200 is installed on the evaporator fixing plate 210, and the evaporator fixing plate 210 is fixedly arranged in the heat exchange cavity 13.

[0030] Among them, as shown in Figure 4 、 5, 6, the air valve mechanism is arranged in the fresh air cavity 14, and is used for controlling opening and closing of the fresh air outlet 16 and the indoor return air outlet 15. By controlling the air valve mechanism, the indoor air conditioning unit embodiment involved in the present application can implement a fresh air natural cooling mode, a mechanical refrigeration mode and a mixed refrigeration mode. The air valve mechanism comprises: an air valve actuator 510 fixedly arranged in the fresh air cavity 14 and used for executing a control instruction of an external controller on the air valve mechanism; an air valve bearing 520 arranged on the air valve actuator 510 and capable of being driven by the air valve actuator 510; and an air valve blade 530, one end of which is connected with the air valve bearing 520, and the air valve blade 530 can cover the fresh air outlet 16 or the indoor return air outlet 15 by rotation of the air valve bearing 520. The air valve bearing 520 on the air valve actuator 510 drives the air valve blade 530 to rotate, so as to selectively cover the fresh air outlet 16 and the indoor return air outlet 15 or simultaneously partially open to adjust a mixed air flow ratio. As shown in Figure 4 , when the air valve blade 530 covers the indoor return air outlet 15, the indoor air conditioning unit enters the fresh air natural cooling mode; as shown in Figure 5 , when the air valve blade 530 covers the fresh air outlet 16, the indoor air conditioning unit enters the mechanical refrigeration mode; as shown in Figure 6 , when the air valve blade 530 does not cover the indoor return air outlet 15 and does not cover the fresh air outlet 16, the indoor air conditioning unit enters the mixed refrigeration mode. In the mixed mode, the proportion of outdoor air entering can be adjusted by the angle of the air valve blade 530, so as to control the room temperature.

[0031] In the embodiment, a plurality of sealing members are further arranged, which are used in cooperation with the air valve mechanism to close the indoor return air outlet 15 or the fresh air outlet 16.

[0032] As shown in Figure 4 , 5 , 6, an L-shaped water pan 300 is arranged in the heat exchange cavity 13. The L-shaped water pan 300 is composed of a water pan fixed end 310 and a water pan protruding part 320. The water pan fixed end 310 is fixedly connected with the side wall of the cabinet 10, and the water pan protruding part 320 extends perpendicularly from the water pan fixed end 310 to the end close to the air filter 400. The evaporator 200 is connected with the water pan fixed end 310 or the water pan protruding part 320. In order to meet different installation modes of the indoor air conditioning unit embodiment involved in the present application, the special L-shaped water pan 300 is used, so that in the condition of ceiling installation or wall-hanging installation, the moisture on the evaporator 200 can enter the L-shaped water pan 300, thereby avoiding direct falling on the air filter 400 or the cabinet 10 to cause rust or failure of the filtering function.

[0033] In this embodiment, the evaporator fixing plate 210 is inclinedly disposed in the heat exchange chamber 13, and the end of the evaporator fixing plate 210 near the air filter 400 contacts the water receiving tray protrusion 320. The evaporator 200 adopts an inclined design to increase the contact area with the airflow, thereby improving the evaporation efficiency.

[0034] Among them, such as Figure 3 As shown, a drain outlet 19 is provided on the bottom surface of the chassis 10. The drain outlet 19 is connected to the connection between the fixed end 310 of the water receiving tray and the protrusion 320 of the water receiving tray via a water pipe.

[0035] In this embodiment, an electrical junction box 600 is provided in the air supply cavity 11. Alternatively, in other embodiments, the electrical junction box 600 may also be located in the heat exchange cavity 13 or the fresh air cavity 14.

[0036] In this embodiment, as Figure 3 As shown, a sealing plate 161 is provided at the fresh air inlet 16, and multiple knockout holes 162 of different shapes are provided on the sealing plate 161. The multiple knockout holes 162 of different shapes can accommodate air supply ducts 20 of various shapes.

[0037] Among them, such as Figure 3 As shown, a three-way shut-off valve 18 is provided on the bottom surface of the casing 10, and the evaporator 200 is connected to the outdoor unit 30 through the three-way shut-off valve 18. The three-way shut-off valve 18 is used to connect the refrigerant circuit of the evaporator 200 and the outdoor unit 30, and to control the refrigerant flow direction. The outdoor unit 30 has a built-in compressor and condenser, forming a refrigerant circulation system.

[0038] In this embodiment, the refrigerant used in the refrigerant circulation system is Freon. In other embodiments, the refrigeration system equipment can be adjusted to accommodate different types of refrigerants, depending on actual needs.

[0039] Preferably, temperature sensors can be installed at the indoor return air inlet 15, the air outlet 12, and the outdoor unit, and a controller connected to the temperature sensors can be installed at the damper actuator 510. The controller can automatically adjust the opening and closing angle of the damper blades 530 based on the temperature parameters collected by the temperature sensors.

[0040] Among them, such as Figure 1 As shown, the chassis 10 is provided with multiple mounting feet 17 for fixing the indoor air conditioning unit, and each mounting foot 17 is provided with a fixing groove.

[0041] In addition, this application also provides an indoor air conditioning unit installation method for installing the indoor air conditioning unit as described above, specifically including a ceiling installation method and a wall-mounted installation method.

[0042] Among them, such as Figure 8 As shown, the ceiling installation methods include:

[0043] 1. Align the fresh air outlet 16 with the reserved air inlet on the wall, and ensure the level.

[0044] 2. Insert the wall top hanger into the fixed slot of the machine case mounting leg 17.

[0045] 3. After using the level to calibrate the levelness of the machine set, lock the anti-loose nut at the end of the hanger.

[0046] 4. According to the shape of the air supply pipe 20, knock the corresponding knock-off hole 162 on the sealing plate 161, and insert and fix the air supply pipe.

[0047] As shown in FIG. 1, the wall-mounted installation method comprises: Figure 7

[0048] 1. Adjust the installation height of the machine set, and reserve the bending space of the L-shaped air supply pipe 20.

[0049] 2. Insert the wall expansion bolt into the fixed slot of the mounting leg 17.

[0050] 3. After calibration, lock the anti-loose nut at the end of the expansion bolt.

[0051] 4. Knock the knock-off hole 162 matched with the L-shaped air supply pipe, and complete the pipe connection.

[0052] The indoor air conditioning unit related to the embodiments of the present application increases the fresh air outlet 16 compared with the indoor air conditioning unit in the prior art. When the outdoor temperature is low, the fresh air natural cooling mode can be used. When the outdoor temperature is high, the mechanical refrigeration mode can be used. When the outdoor temperature is high but lower than the return air temperature, the mixed refrigeration mode can be used. Thus, the energy consumption of the indoor air conditioning unit can be reduced. At the same time, the mixed refrigeration mode can adjust the fresh air proportion as needed to balance the refrigeration load and energy efficiency. The combination of the L-shaped water pan 300 and the inclined evaporator 200 avoids internal corrosion and filter failure caused by condensed water. Through the design of the mounting leg 17 and the multi-shape knock-off hole 162, the ceiling mounting method and the wall-mounted installation method can be matched to adapt to different building structure requirements.

[0053] The term "comprising" used in the full text of the present application should not be interpreted as being limited to the following listed content; it does not exclude other structural elements or steps.

[0054] It can be understood that those skilled in the art can combine the features mentioned in one or more embodiments mentioned throughout the full text of the present application with the features in other embodiments in any appropriate manner to implement the present application.

[0055] ​Note that the above only describes the preferred embodiments of the present application and the applied technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, reconfigurations and substitutions can be made by those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the technical concept of the present application, and all fall within the protection scope of the present application.

Claims

1. An indoor air conditioning unit, characterized by comprising: The indoor air conditioning unit comprises: a cabinet, a supply air outlet is arranged on the top end surface of the cabinet, a fresh air inlet is arranged on the bottom end surface of the cabinet, and an indoor return air inlet is arranged on the front end surface of the cabinet close to the bottom end surface; a supply air fan is arranged in the cabinet close to the top end surface, the supply air fan is fixed to the cabinet through a supply air fan mounting plate, and a supply air cavity is formed between the supply air fan mounting plate and the top end surface of the cabinet; an air filter is arranged in the cabinet close to the bottom end surface, a heat exchange cavity is formed between the air filter and the supply air fan mounting plate, a fresh air cavity is formed between the air filter and the bottom end surface of the cabinet, and an evaporator is arranged on an evaporator fixing plate which is fixed in the heat exchange cavity; a damper mechanism is arranged in the fresh air cavity and used for controlling the opening and closing of the fresh air inlet and the indoor return air inlet, and the indoor air conditioning unit can be switched between a fresh air natural cooling mode, a mechanical refrigeration mode and a mixed refrigeration mode through the control of the damper mechanism. The damper mechanism comprises:

2. The indoor air conditioning unit as claimed in claim 1, wherein a damper actuator which is fixed in the fresh air cavity and used for executing the control instruction of an external controller on the damper mechanism; a damper bearing which is arranged on the damper actuator and can be driven by the damper actuator; a damper blade which is connected to the damper bearing at one end and can cover the fresh air inlet or the indoor return air inlet through the rotation of the damper bearing. An L-shaped water pan is arranged in the heat exchange cavity, the L-shaped water pan comprises a water pan fixing end and a water pan protruding part, the water pan fixing end is fixedly connected to the side wall of the cabinet, the water pan protruding part extends perpendicularly from the water pan fixing end close to the one end of the air filter, and the evaporator is connected to the water pan fixing end or the water pan protruding part.

3. The indoor air conditioning unit as set forth in claim 1, wherein The evaporator fixing plate is arranged obliquely in the heat exchange cavity, and the one end of the evaporator fixing plate close to the air filter is in contact with the water pan protruding part.

4. The indoor air conditioning unit as set forth in claim 3, wherein A drain outlet is arranged on the bottom end surface of the cabinet, and the drain outlet is connected to the connection position of the water pan fixing end and the water pan protruding part through a water pipe.

5. The indoor air conditioning unit as set forth in claim 4, wherein 6. The indoor air conditioning unit according to claim 1, wherein an electric appliance junction box is arranged in the supply air cavity; a sealing plate is arranged at the fresh air inlet, and a plurality of knock-off holes with different shapes are arranged on the sealing plate. A three-way stop valve is arranged on the bottom end surface of the cabinet, the evaporator is connected to an outdoor unit through the three-way stop valve, and a mechanical refrigeration device is arranged in the outdoor unit.

7. The indoor air conditioning unit as set forth in claim 1, wherein A plurality of mounting legs are arranged on the cabinet and used for fixing the indoor air conditioning unit, and a fixing groove is arranged on each mounting leg.

8. The indoor air conditioning unit as set forth in claim 1, wherein ​

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