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] This application relates to the field of air conditioning equipment, and particularly to an indoor air conditioning unit. Background Art

[0002] In the entire mobile communication network, the energy consumption of base stations accounts for approximately 72%, and in base stations, the energy consumption of air conditioners accounts for approximately 56%. Therefore, the large energy consumption of base station air conditioners is a problem that needs to be solved through technological innovation. The existing air-cooled direct expansion air conditioning units have a single operating mode and huge energy consumption, so there is an urgent need for an air conditioning unit with low energy consumption. Summary of the Invention

[0003] In view of this, this application provides an indoor air conditioning unit, and its specific structure includes: a chassis, on the top surface of which there is an air supply opening, on the bottom surface of which there is a fresh air inlet, and on the front end surface near the bottom end surface there is an indoor air return opening; a supply fan, arranged near the top surface in the chassis, the supply fan is fixed to the chassis through a supply fan mounting plate, and a supply air chamber is formed between the supply fan mounting plate and the top surface of the chassis; an air filter, arranged near the bottom end surface in the chassis, a heat exchange chamber is formed between the air filter and the supply fan mounting plate, and a fresh air chamber is formed between the air filter and the bottom end surface of the chassis; an evaporator, arranged on an evaporator fixing plate, and the evaporator fixing plate is fixedly arranged in the heat exchange chamber; a wind valve mechanism, arranged in the fresh air chamber, used to control the opening and closing of the fresh air inlet and the indoor air return opening, and by controlling the wind valve mechanism, it is possible to realize the switching operation of the indoor air conditioning unit between the fresh air natural cooling mode, the mechanical refrigeration mode, and the hybrid refrigeration mode.

[0004] With the above specific structure, compared with the air conditioning units in the prior art, a fresh air inlet is added. When the outdoor temperature is relatively low, the fresh air natural cooling mode can be adopted. When the outdoor temperature is relatively high, the mechanical refrigeration mode can be adopted. When the outdoor temperature is relatively high but lower than the return air temperature, the hybrid refrigeration mode can be adopted. Thus, the energy consumption of the indoor air conditioning unit can be reduced.

[0005] As a possible implementation, the wind valve mechanism includes: a wind valve actuator, fixedly arranged in the fresh air chamber, used to execute the control instructions of the external controller for the wind valve mechanism; a wind valve bearing, arranged on the wind valve actuator and can be driven by the wind valve actuator; a wind valve blade, one end of which is connected to the wind valve bearing, and by rotating the wind valve bearing, the fresh air inlet or the indoor air return opening can be covered.

[0006] With the above possible implementation methods, 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 opening, the indoor air conditioner unit enters the fresh air natural cooling mode; when the air valve blade covers the fresh air opening, the indoor air conditioner unit enters the mechanical refrigeration mode; when the air valve blade does not cover the indoor return air opening nor the fresh air opening, the indoor air conditioner 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, thereby controlling the return air temperature.

[0007] As a possible implementation method, an L-shaped water receiving tray is provided in the heat exchange chamber. The L-shaped water receiving tray includes a water receiving tray fixed end and a water receiving tray protruding part. The water receiving tray fixed end is fixedly connected to the side wall of the chassis, and the water receiving tray protruding part vertically extends from the end of the water receiving tray fixed end close to the air filter. The evaporator is connected to the water receiving tray fixed end or the water receiving tray protruding part.

[0008] As a possible implementation method, the evaporator fixing plate is inclined in the heat exchange chamber, and the end of the evaporator fixing plate close to the air filter is in contact with the water receiving tray protruding part.

[0009] As a possible implementation method, a drain port is provided at the bottom end surface of the chassis, and the drain port is connected to the connection part of the water receiving tray fixed end and the water receiving tray protruding part through a water pipe.

[0010] As a possible implementation method, an electrical junction box is provided in the air supply chamber; a sealing plate is provided at the fresh air opening, and a plurality of knock-out holes of different shapes are provided on the sealing plate.

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

[0012] As a possible implementation method, a three-way stop valve is provided at the bottom end surface of the chassis. The evaporator is connected to the outdoor unit through the three-way stop valve, and a mechanical refrigeration device is provided in the outdoor unit.

[0013] As a possible implementation method, a plurality of mounting feet are provided on the chassis for fixing the indoor air conditioner unit, and each mounting foot is provided with a fixing groove.

[0014] This application also provides an installation method for an indoor air conditioner unit for installing the indoor air conditioner unit as described above, specifically including a ceiling installation method and a wall-mounted installation method.

[0015] As a possible implementation manner, the ceiling installation method includes: aligning the fresh air inlet with the air inlet reserved on the wall at the same horizontal plane, inserting the suspension rod fixed on the wall into the fixing groove of the installation support foot, using a level to check the levelness of the indoor air conditioner unit, then screwing a locknut at the end of the suspension rod, opening the knockout hole of the corresponding shape according to the shape of the air supply duct extending from the air inlet, and extending the air supply duct into the fresh air inlet; the wall-mounted installation method includes: keeping a certain distance between the installation height of the indoor air conditioner unit and the air inlet reserved on the wall to facilitate the installation of the L-shaped air supply duct, inserting the expansion bolt fixed on the wall into the fixing groove of the installation support foot, using a level to check the levelness of the indoor air conditioner unit, then screwing a locknut at the end of the expansion bolt, opening the knockout hole of the corresponding shape according to the shape of the L-shaped air supply duct extending from the air inlet, and extending the L-shaped air supply duct into the fresh air inlet. Description of the Drawings

[0016] The following further describes each technical feature of the present application and the relationships between them with reference to the drawings. The drawings are exemplary, and some technical features are not shown in actual proportion, and some conventional technical features in the technical field to which the present application belongs and which are not essential for understanding and implementing the present application may be omitted in some drawings, or some technical features that are not essential for understanding and implementing the present application are additionally shown. That is, the combination of the technical features shown in the drawings is not used to limit the present application. In addition, throughout the present application, the content referred to by the same reference numerals is also the same. The specific description of the drawings is as follows:

[0017] Figure 1 It is the front view of the embodiment of the indoor air conditioner unit involved in the present application;

[0018] Figure 2 It is the top view of the embodiment of the indoor air conditioner unit involved in the present application;

[0019] Figure 3 It is the bottom view of the embodiment of the indoor air conditioner unit involved in the present application;

[0020] Figure 4 It is the cross-sectional view of the embodiment of the indoor air conditioner unit involved in the present application in the fresh air natural cooling mode;

[0021] Figure 5 It is the cross-sectional view of the embodiment of the indoor air conditioner unit involved in the present application in the mechanical refrigeration mode;

[0022] Figure 6 It is the cross-sectional view of the embodiment of the indoor air conditioner unit involved in the present application in the mixed refrigeration mode;

[0023] Figure 7This application relates to a cross-sectional view of an indoor air conditioner unit in a wall-mounted installation state;

[0024] Figure 8 This application relates to a cross-sectional view of an indoor air conditioner unit in a ceiling-mounted installation state.

[0025] Explanation of reference numerals: 10 - chassis; 11 - air supply chamber; 12 - air supply outlet; 13 - heat exchange chamber; 14 - fresh air chamber; 15 - indoor return air inlet; 16 - fresh air inlet; 161 - sealing plate; 162 - knockout hole; 17 - mounting support foot; 18 - three-way stop valve; 19 - drain outlet; 20 - air supply duct; 30 - outdoor unit; 100 - air supply fan; 110 - air supply fan mounting plate; 200 - evaporator; 210 - evaporator fixing plate; 300 - L-shaped water receiving tray; 310 - fixed end of water receiving tray; 320 - protruding part of water receiving tray; 400 - air filter; 510 - damper actuator; 520 - damper bearing; 530 - damper blade; 600 - electrical junction box. Detailed implementation manners

[0026] Next, the detailed implementation manners of this application will be described in detail with reference to the accompanying drawings.

[0027] This application provides an indoor air conditioner unit, which has the characteristic of low energy consumption. As Figure 4 、 5 、and 6 show, it specifically consists of a chassis 10, an air supply fan 100, an air filter 400, an evaporator 200 and a damper mechanism.

[0028] Among them, as Figure 4 、 5 、and 6 show, the chassis 10 has a cuboid structure, and an air supply outlet 12 is opened on its top end surface, and the air supply outlet 12 communicates with the indoor environment. A fresh air inlet 16 is opened on the bottom end surface of the chassis 10, and the fresh air inlet 16 communicates with the outdoor environment. An indoor return air inlet 15 is opened on the front end surface near the bottom end surface, and the indoor return air inlet 15 communicates with the indoor environment.

[0029] Among them, as Figure 4 、 5 、and 6 show, the air supply fan 100 is arranged in the chassis 10 near the top end surface. The air supply fan 100 is fixed to the chassis 10 through the air supply fan mounting plate 110. An air supply chamber 11 is formed between the air supply fan mounting plate 110 and the top end surface of the chassis 10.

[0030] Among them, as Figure 4 、 5 、and 6 show, the air filter 400 is arranged in the chassis 10 near the bottom end surface. A heat exchange chamber 13 is formed between the air filter 400 and the air supply fan mounting plate 110. A fresh air chamber 14 is formed between the air filter 400 and the bottom end surface of the chassis 10.

[0031] Among them, as Figure 4 , 5 , and as shown in 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.

[0032] Among them, as Figure 4 , 5 , and as shown in 6, the air valve mechanism is arranged in the fresh air cavity 14 and is used to control the opening and closing of the fresh air inlet 16 and the indoor return air inlet 15. By controlling the air valve mechanism, the indoor air conditioner unit embodiment involved in the present application can include a fresh air natural cooling mode, a mechanical refrigeration mode, and a hybrid refrigeration mode. The air valve mechanism includes: an air valve actuator 510, fixedly arranged in the fresh air cavity 14 and used to execute the control instruction of the external controller for 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; an air valve blade 530, one end of which is connected to the air valve bearing 520, and the rotation of the air valve bearing 520 can cover the fresh air inlet 16 or / and the indoor return air inlet 15. 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 inlet 16, the indoor return air inlet 15, or partially open them simultaneously to adjust the mixed air flow ratio. As Figure 4 shown, when the air valve blade 530 covers the indoor return air inlet 15, the indoor air conditioner unit enters the fresh air natural cooling mode; as Figure 5 shown, when the air valve blade 530 covers the fresh air inlet 16, the indoor air conditioner unit enters the mechanical refrigeration mode; as Figure 6 shown, when the air valve blade 530 does not cover the indoor return air inlet 15 and does not cover the fresh air inlet 16, the indoor air conditioner unit enters the hybrid refrigeration mode. In the hybrid mode, the proportion of outdoor air entering can be adjusted through the angle of the air valve blade 530, so as to control the room temperature.

[0033] In this embodiment, a plurality of seals are also provided and are used to cooperate with the air valve mechanism to seal the indoor return air inlet 15 or the fresh air inlet 16.

[0034] Among them, as Figure 4 , 5, as shown in Fig. 6, an L-shaped water receiving tray 300 is provided in the heat exchange chamber 13. The L-shaped water receiving tray 300 is composed of a water receiving tray fixed end 310 and a water receiving tray protruding portion 320. The water receiving tray fixed end 310 is fixedly connected to the side wall of the chassis 10, and the water receiving tray protruding portion 320 vertically extends from one end of the water receiving tray fixed end 310 close to the air filter 400. The evaporator 200 is connected to the water receiving tray fixed end 310 or the water receiving tray protruding portion 320. In order to meet the different installation modes of the indoor air conditioner unit embodiments involved in the present application, the special L-shaped water receiving tray 300 is used, which can ensure that the moisture on the evaporator 200 can enter the L-shaped water receiving tray 300 in both the ceiling-mounted or wall-mounted states, thereby preventing it from directly falling on the air filter 400 or the chassis 10, resulting in rust or filter function failure.

[0035] In this embodiment, the evaporator fixing plate 210 is inclined in the heat exchange chamber 13, and one end of the evaporator fixing plate 210 close to the air filter 400 is in contact with the water receiving tray protruding portion 320. The evaporator 200 adopts an inclined design to increase the contact area with the air flow, thereby improving the evaporation efficiency.

[0036] Among them, as Figure 3 shown, a drain port 19 is provided on the bottom end surface of the chassis 10. The drain port 19 is connected to the connection part between the water receiving tray fixed end 310 and the water receiving tray protruding portion 320 through a water pipe.

[0037] In this embodiment, an electrical junction box 600 is provided in the air supply chamber 11. Additionally, in other embodiments, the electrical junction box 600 can also be provided in the heat exchange chamber 13 or the fresh air chamber 14.

[0038] In this embodiment, as Figure 3 shown, a sealing plate 161 is provided at the fresh air inlet 16, and a plurality of knock-out holes 162 of different shapes are provided on the sealing plate 161. The plurality of knock-out holes 162 of different shapes can adapt to air supply pipes 20 of various shapes.

[0039] Among them, as Figure 3 shown, a three-way stop valve 18 is provided on the bottom end surface of the chassis 10. The evaporator 200 is connected to the outdoor unit 30 through the three-way stop valve 18. The three-way stop valve 18 is used to connect the refrigerant circuits of the evaporator 200 and the outdoor unit 30 and control the refrigerant flow direction. A compressor and a condenser are built into the outdoor unit 30 to form a refrigerant circulation system.

[0040] In this embodiment, the refrigerant used in the refrigerant circulation system is Freon. Additionally, in other embodiments, the refrigeration system equipment can be adjusted according to actual needs to be compatible with different types of refrigerants.

[0041] Among them, as Figure 1As shown, a plurality of mounting feet 17 are provided on the chassis 10 for fixing the indoor air-conditioning unit, and fixing grooves are provided on each mounting foot 17.

[0042] In addition, the present application also provides an installation method for an indoor air-conditioning unit for installing the indoor air-conditioning unit as described above, specifically including a ceiling installation method and a wall-mounted installation method.

[0043] Among them, as Figure 8 shown, the ceiling installation method includes:

[0044] 1. Align the fresh air inlet 16 with the reserved air inlet on the wall to ensure horizontal.

[0045] 2. Insert the ceiling suspension rod into the fixing groove of the chassis mounting foot 17.

[0046] 3. After calibrating the level of the unit using a level, lock the locknut at the end of the suspension rod.

[0047] 4. According to the shape of the air supply duct 20, knock open the corresponding knockout hole 162 on the closing plate 161, insert and fix the air supply duct.

[0048] Among them, as Figure 7 shown, the wall-mounted installation method includes:

[0049] 1. Adjust the installation height of the unit to reserve the bending space for the L-shaped air supply duct 20.

[0050] 2. Insert the wall expansion bolt into the fixing groove of the mounting foot 17.

[0051] 3. After calibrating the level, lock the locknut at the end of the expansion bolt.

[0052] 4. Knock open the knockout hole 162 matching the L-shaped air supply duct to complete the pipeline connection.

[0053] The indoor air-conditioning unit involved in the embodiment of the present application has an increased fresh air inlet 16 compared with the indoor air-conditioning unit in the prior art. When the outdoor temperature is relatively low, the fresh air natural cooling mode can be adopted. When the outdoor temperature is relatively high, the mechanical refrigeration mode can be adopted. When the outdoor temperature is relatively high but lower than the return air temperature, the hybrid refrigeration mode can be adopted. Thus, the energy consumption of the indoor air-conditioning unit can be reduced. At the same time, the hybrid refrigeration mode can adjust the fresh air ratio as needed to balance the refrigeration load and energy efficiency. The combination of the L-shaped water receiving tray 300 and the inclined evaporator 200 can avoid internal corrosion and filter failure caused by condensed water. Through the design of the mounting foot 17 and the multi-shaped knockout hole 162, combined with the ceiling installation method and the wall-mounted installation method, different building structure requirements can be adapted.

[0054] The term "including" used throughout this application should not be construed as being limited to the content listed thereafter; it does not exclude other structural elements or steps.

[0055] It will be understood that those skilled in the art can implement the present application by combining the features mentioned in one or more of the embodiments described throughout the present application with the features in other embodiments in any suitable manner.

[0056] Note that the above are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection 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. Without departing from the technical concept of the present application, more other equivalent embodiments can be included, all of which fall within the protection scope of the present application.

Claims

1. An indoor air conditioning unit, characterized in that: include: The chassis has an air supply port on its top surface, a fresh air port on its bottom surface, and an indoor return air port on its front surface near the bottom surface; A blower is arranged in the chassis near the top surface, the blower is fixed to the chassis via a blower mounting plate, and an air supply cavity is formed between the blower mounting plate and the top surface of the chassis; An air filter is arranged in the chassis near the bottom end surface, a heat exchange cavity is formed between the air filter and the blower mounting plate, and a fresh air cavity is formed between the air filter and the bottom end surface of the chassis; An evaporator is arranged on an evaporator fixing plate, and the evaporator fixing plate is fixedly arranged in the heat exchange cavity; The air valve mechanism is arranged in the fresh air chamber and is used to control the opening and closing of the fresh air inlet and the indoor return air inlet. By controlling the air valve mechanism, the indoor air conditioning unit can switch between the fresh air natural cooling mode, the mechanical refrigeration mode and the mixed refrigeration mode.

2. The indoor air conditioning unit according to claim 1, characterized in that: The air valve mechanism comprises: The air valve actuator is fixedly arranged in the fresh air chamber and is used to execute the control instructions of the external controller on the air valve mechanism; A damper bearing, arranged on the damper actuator, capable of being driven by the damper actuator; One end of the air valve blade is connected to the air valve bearing, and the fresh air inlet and / or the indoor return air inlet can be covered by the rotation of the air valve bearing.

3. The indoor air conditioning unit according to claim 1, characterized in that: An L-shaped water receiving tray is arranged in the heat exchange chamber, and the L-shaped water receiving tray includes a water receiving tray fixed end and a water receiving tray protrusion, the water receiving tray fixed end is fixedly connected to the side wall of the chassis, the water receiving tray protrusion vertically extends from the water receiving tray fixed end close to one end of the air filter, and the evaporator is connected to the water receiving tray fixed end or the water receiving tray protrusion.

4. The indoor air conditioning unit according to claim 3, characterized in that: The evaporator fixing plate is arranged obliquely in the heat exchange cavity, and one end of the evaporator fixing plate close to the air filter is in contact with the protruding portion of the water receiving tray.

5. The indoor air conditioning unit according to claim 4, characterized in that: The bottom end surface of the chassis is provided with a drain port, and the drain port is connected to the connection between the fixed end of the water receiving tray and the protruding portion of the water receiving tray through a water pipe.

6. The indoor air conditioning unit according to claim 1, characterized in that: An electrical junction box is provided in the air supply cavity; A sealing plate is provided at the fresh air outlet, and a plurality of knock-out holes of different shapes are provided on the sealing plate.

7. The indoor air conditioning unit according to claim 1, characterized in that: A three-way stop valve is arranged on the bottom end surface of the chassis, and 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.

8. The indoor air conditioning unit according to claim 1, characterized in that: The chassis is provided with a plurality of mounting feet for fixing the indoor air conditioning unit, and each of the mounting feet is provided with a fixing groove.

9. A method for installing an indoor air conditioning unit, characterized in that: Used to install the indoor air conditioning unit as described in any one of claims 1-8, including a ceiling installation method and a wall installation method.

10. The indoor air conditioning unit installation method according to claim 9, characterized in that: The ceiling installation method comprises: Align the fresh air vent and the air inlet reserved on the wall to the same level. Insert the hanging rod fixed on the wall into the fixing groove of the mounting foot, Use a level to check the levelness of the indoor air conditioning unit. Then screw the lock nut on the end of the boom. Open the knock-out hole of corresponding shape according to the shape of the air supply pipe extending from the air inlet, and extend the air supply pipe into the fresh air outlet; The wall-mounting installation method comprises: The installation height of the indoor air conditioning unit should be kept at a certain distance from the air inlet reserved on the wall, so as to facilitate the installation of the L-shaped air supply duct. Insert the expansion bolts fixed on the wall into the fixing grooves of the mounting feet. Use a level to check the levelness of the indoor air conditioning unit. Then screw the anti-loosening nut on the end of the expansion bolt. The knock-out hole of the corresponding shape is opened according to the shape of the L-shaped air supply pipe extending from the air inlet, and the L-shaped air supply pipe is extended into the fresh air outlet.

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