Air conditioning unit capable of realizing positive and negative pressure control of room

Abstract

The utility model provides an air conditioning unit capable of realizing positive and negative pressure control in a room, which comprises an indoor unit and an outdoor unit, a condenser and an outdoor fan are arranged in the outdoor unit, an evaporator and an indoor fan are arranged in the indoor unit, the outdoor unit is communicated with an indoor and outdoor unit air supply pipe and an outdoor unit air entraining pipe, and the indoor and outdoor unit air supply pipe is communicated with the outdoor unit air entraining pipe. The other end of the indoor and outdoor unit air supply pipe is communicated with the indoor unit, the other end of the outdoor unit air guide pipe is connected with an indoor air return pipe, the indoor air return pipe is communicated with the indoor unit, and an air supply proportional air valve is arranged at the end, close to the indoor unit, of the indoor and outdoor unit air supply pipe. An air entraining proportional air valve is arranged at the end, close to the outdoor unit, of the outdoor unit air entraining air pipe. The air conditioner has the advantages that fresh air can be provided indoors, energy is saved, noise is reduced, and indoor positive and negative pressure can be controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an air conditioning unit capable of realizing positive and negative pressure control of a room. Background Art

[0002] Daily life and production are full of application scenarios such as fresh air, positive pressure, and negative pressure. For example, newly renovated rooms need fresh air ventilation. When the air quality outside the room is poor or there is an odor, the room needs positive pressure to prevent outside air from entering. In the kitchen, bathroom, etc., when you don't want the internal air to leak out and affect the environment of other rooms, you need to maintain negative pressure indoors. To solve these problems in the industry, it is usually necessary to install a separate fresh air system or exhaust system, which requires a large initial investment, and the direct exhaust of indoor air also causes energy waste; in addition, installing an additional system will increase the source of noise and reduce comfort. Utility Model Content

[0003] In view of this, the utility model provides an air conditioning unit capable of realizing positive and negative pressure control in a room, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial choice.

[0004] The technical solution of the embodiment of the utility model is achieved as follows: an air-conditioning unit capable of realizing positive and negative pressure control of a room, comprising an indoor unit and an outdoor unit, wherein the outdoor unit is provided with a condenser and an outdoor fan, wherein the indoor unit is provided with an evaporator and an indoor fan, wherein the outdoor unit is connected with an indoor and outdoor unit air supply duct and an outdoor unit air intake duct, wherein the other end of the indoor and outdoor unit air supply duct is connected with the indoor unit, wherein the other end of the outdoor unit air intake duct is connected with an indoor return air duct, wherein the indoor return air duct is connected with the indoor unit, an air supply proportional air valve is provided at one end of the indoor and outdoor unit air supply duct close to the indoor unit, and an air intake proportional air valve is provided at one end of the outdoor unit air intake duct close to the outdoor unit.

[0005] In the above scheme, the outdoor fan blows air toward the condenser, which can send a portion of fresh air into the air supply ducts of the indoor and outdoor units. When the air supply proportional air valve is opened, the air is sent into the indoor unit through the air supply ducts of the indoor and outdoor units and mixed with the return air of the indoor unit, and then passes through the evaporator in the indoor unit, and finally discharged from the indoor unit to send fresh air into the room; when the outdoor fan is turned on, the air intake proportional air valve is opened, and a portion of the indoor air is drawn to the outdoor unit through the indoor return air duct and the outdoor unit air intake duct, thereby reducing the temperature of the condenser inlet air, thereby achieving energy saving. The air supply proportional air valve and the air intake proportional air valve can adjust the ratio of indoor and outdoor and outdoor unit supply and air intake, thereby realizing the control of indoor positive and negative pressure. The noise is mainly generated in the outdoor unit, which improves the user's comfort. The entire air-conditioning unit has high integration and low cost.

[0006] Further preferably, the outdoor unit is provided with an outdoor unit air supply port and an outdoor unit air intake port, the indoor and outdoor unit air supply duct is connected with the outdoor unit air supply port, and the outdoor unit air intake duct is connected with the outdoor unit air intake port.

[0007] In the above scheme, outdoor fresh air is sent into the indoor and outdoor unit air supply ducts through the outdoor unit air supply outlet, and the indoor air is introduced into the outdoor unit air intake outlet through the outdoor unit air intake duct, and enters the outdoor unit through the outdoor unit air intake outlet. By setting the outdoor unit air supply outlet and the outdoor unit air intake outlet, the air flow direction can be more effectively controlled to ensure the smooth circulation of fresh air and return air, thereby improving the air circulation efficiency of the entire air-conditioning system.

[0008] Further preferably, an indoor return air duct bypass port is provided at one end of the indoor return air duct, and the outdoor unit induced air duct is connected to the indoor return air duct bypass port.

[0009] In the above scheme, the bypass port of the indoor return air duct can be used as an adjustment point for air flow, optimizing the air flow path between indoor and outdoor, and improving air flow efficiency. The existence of the bypass port makes the maintenance and cleaning of the indoor return air duct more convenient, because the bypass port can be directly operated without disassembling the entire duct system.

[0010] Further preferably, the indoor unit is provided with an indoor unit return air outlet, and the indoor return air duct is connected to the indoor unit return air outlet.

[0011] In the above scheme, the indoor unit return air outlet is directly connected to the indoor return air duct, which can collect indoor air more effectively and improve the efficiency of air circulation. By reasonably designing the position and size of the return air outlet, the resistance of air flow can be reduced and the energy consumption of the outdoor fan can be reduced.

[0012] Further preferably, an indoor unit air outlet is provided at one end of the indoor unit.

[0013] In the above scheme, when the air supply proportional air valve is opened, the air is sent into the indoor unit through the indoor and outdoor unit air supply ducts and mixed with the return air of the indoor unit, then passes through the evaporator in the indoor unit and is finally discharged from the indoor unit air outlet. The design of the indoor unit air outlet helps to evenly distribute the processed air to the indoor space, thereby improving the uniformity and comfort of air circulation.

[0014] Further preferably, a throttle valve is provided in the indoor unit, one end of the throttle valve is connected to the evaporator, and the other end of the throttle valve is connected to the condenser.

[0015] In the above scheme, the throttle valve can accurately control the refrigerant flow entering the evaporator, ensure that the refrigerant is fully evaporated in the evaporator, and improve the refrigeration efficiency; by adjusting the opening of the throttle valve, the speed of indoor temperature rise and fall can be controlled to achieve smoother and more precise temperature control, and the excessive flow of refrigerant can be reduced, thereby reducing the energy consumption of the system and improving the energy efficiency ratio.

[0016] Further preferably, it also includes a compressor, which is installed in the outdoor unit and connected to the evaporator.

[0017] In the above scheme, the compressor is installed in the outdoor unit, which can realize a centralized layout, reduce the occupation of indoor space, and facilitate interior decoration and aesthetics. Since the compressor is one of the main noise sources, installing it in the outdoor unit can effectively reduce indoor noise and improve the comfort of the indoor environment.

[0018] The utility model discloses an air conditioner unit capable of realizing positive and negative pressure control of a room, which has the beneficial effects of being able to provide fresh air indoors, save energy, reduce noise, and be able to control positive and negative pressure indoors. The outdoor fan blows air toward the condenser, and can send a portion of fresh air into the air supply pipe of the indoor and outdoor units. When the air supply proportional air valve is opened, the air is sent into the indoor unit through the air supply pipe of the indoor and outdoor units, and the return air of the indoor unit is mixed, and then passes through the evaporator in the indoor unit, and finally discharged from the indoor unit to send fresh air indoors; when the outdoor fan is turned on, the air intake proportional air valve is opened, and a portion of the indoor air is drawn to the outdoor unit through the indoor return air pipe and the outdoor unit air intake air pipe, thereby reducing the temperature of the condenser inlet air, thereby achieving the effect of energy saving, the air supply proportional air valve and the air intake proportional air valve can adjust the ratio of indoor and outdoor and outdoor unit air supply and air intake, thereby realizing the control of indoor positive and negative pressure, the noise is mainly generated in the outdoor unit, which improves the comfort of the user, and the whole air conditioner unit has high integration and low cost.

[0019] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1This is a schematic diagram of an air conditioning unit capable of realizing positive and negative pressure control in a room according to the utility model.

[0022] Figure 2 This is a schematic diagram of the air supply principle of the air conditioning unit capable of realizing positive and negative pressure control in the room in Example 1.

[0023] Figure 3 This is a schematic diagram of the air supply principle of the air conditioning unit in Example 2 that can achieve positive and negative pressure control in the room.

[0024] Figure 4 This is a schematic diagram of the air supply principle of the air conditioning unit capable of achieving positive and negative pressure control in the room in Example 3.

[0025] Figure numerals: 100, indoor unit; 101, air outlet of indoor unit; 102, evaporator; 103, indoor fan; 104, return air outlet of indoor unit; 105, air supply ratio air valve; 106, throttle valve; 200, air supply air duct of indoor and outdoor units; 201, indoor return air duct; 202, bypass port of indoor return air duct; 203, induced air duct of outdoor unit; 300, outdoor unit; 301, air supply outlet of outdoor unit; 302, condenser; 303, outdoor fan; 304, compressor; 305, induced air outlet of outdoor unit; 306, induced air ratio air valve. DETAILED DESCRIPTION

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0027] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0028] like Figure 1As shown, an embodiment of the utility model provides an air-conditioning unit capable of realizing positive and negative pressure control of a room, comprising an indoor unit 100 and an outdoor unit 300, wherein a condenser 302 and an outdoor fan 303 are installed in the outdoor unit 300, an evaporator 102 and an indoor fan 103 are installed in the indoor unit 100, the outdoor unit 300 is connected with an indoor and outdoor unit air supply duct 200 and an outdoor unit air induced air duct 203, the other end of the indoor and outdoor unit air supply duct 200 is connected with the indoor unit 100, the other end of the outdoor unit air induced air duct 203 is connected with an indoor return air duct 201, the indoor return air duct 201 is connected with the indoor unit 100, an air supply ratio air valve 105 is provided at one end of the indoor and outdoor unit air supply duct 200 close to the indoor unit 100, and an air induced air ratio air valve 306 is provided at one end of the outdoor unit air induced air duct 203 close to the outdoor unit 300. The outdoor fan 303 blows air toward the condenser 302, and can send a portion of fresh air into the indoor and outdoor unit air supply ducts. When the air supply proportional air valve 105 is opened, the air is sent to the indoor unit 100 through the indoor and outdoor unit air supply ducts and mixed with the return air of the indoor unit 100, and then passes through the evaporator 102 in the indoor unit 100, and finally discharged from the indoor unit 100 to send fresh air into the room; when the outdoor fan 303 is turned on, the air intake proportional air valve 306 is opened, and a portion of the indoor air is drawn to the outdoor unit 300 through the indoor return air duct 201 and the outdoor unit air intake duct 203, thereby reducing the temperature of the air entering the condenser 302, thereby achieving energy saving. The air supply proportional air valve 105 and the air intake proportional air valve 306 can adjust the ratio of indoor and outdoor and outdoor unit 300 supply and intake air, thereby achieving control of indoor positive and negative pressure. The noise is mainly generated in the outdoor unit 300, which improves the user's comfort. The entire air-conditioning unit has high integration and low cost.

[0029] like Figure 1 As shown, in some embodiments, the outdoor unit 300 is provided with an outdoor unit air supply port 301 and an outdoor unit air intake port 305, the indoor and outdoor unit air supply duct 200 is connected with the outdoor unit air supply port 301, and the outdoor unit air intake duct 203 is connected with the outdoor unit air intake port 305. Outdoor fresh air is sent into the indoor and outdoor unit air supply duct 200 through the outdoor unit air supply port 301, and indoor air is introduced into the outdoor unit air intake port 305 through the outdoor unit air intake duct 203, and enters the outdoor unit 300 through the outdoor unit air intake port 305. By setting the outdoor unit air supply port 301 and the outdoor unit air intake port 305, the air flow direction can be more effectively controlled to ensure the smooth circulation of fresh air and return air, thereby improving the air circulation efficiency of the entire air conditioning system.

[0030] like Figure 1As shown, in some embodiments, an indoor return air duct bypass port 202 is provided at one end of the indoor return air duct 201, and the outdoor unit induced air duct 203 is connected to the indoor return air duct bypass port 202. The indoor return air duct bypass port 202 can be used as an air flow adjustment point to optimize the air flow path between indoor and outdoor areas and improve air flow efficiency. The existence of the bypass port makes it easier to maintain and clean the indoor return air duct 201, because the bypass port can be directly operated without disassembling the entire duct system.

[0031] like Figure 1 As shown, in some embodiments, the indoor unit 100 is provided with an indoor unit return air port 104, and the indoor return air duct 201 is connected to the indoor unit return air port 104. The indoor unit return air port 104 is directly connected to the indoor return air duct 201, which can more effectively collect indoor air and improve the efficiency of air circulation. By reasonably designing the position and size of the return air port, the resistance of air flow can be reduced and the energy consumption of the outdoor fan 303 can be reduced.

[0032] like Figure 1 As shown, in some embodiments, an indoor unit air outlet 101 is provided at one end of the indoor unit 100. When the air supply proportional air valve 105 is opened, air is sent into the indoor unit 100 through the indoor and outdoor unit air supply air pipes and mixed with the return air of the indoor unit 100, and then passes through the evaporator 102 in the indoor unit 100, and finally discharged from the indoor unit air outlet 101. The design of the indoor unit air outlet 101 helps to evenly distribute the processed air to the indoor space, thereby improving the uniformity and comfort of air circulation.

[0033] like Figure 1 As shown, in some embodiments, a throttle valve 106 is provided in the indoor unit 100, one end of the throttle valve 106 is connected to the evaporator 102, and the other end is connected to the condenser 302. The throttle valve 106 can accurately control the flow rate of the refrigerant entering the evaporator 102, ensure that the refrigerant is fully evaporated in the evaporator 102, and improve the refrigeration efficiency; by adjusting the opening of the throttle valve 106, the speed of the indoor temperature rise and fall can be controlled to achieve more stable and accurate temperature control, and the excessive flow of the refrigerant can also be reduced, thereby reducing the energy consumption of the system and improving the energy efficiency ratio.

[0034] like Figure 1 As shown, in some embodiments, a compressor 304 is further included, and the compressor 304 is installed in the outdoor unit 300, and the compressor 304 is connected to the evaporator 102. The compressor 304 is installed in the outdoor unit 300, which can realize a centralized layout, reduce the occupation of indoor space, and facilitate indoor decoration and beauty. Since the compressor 304 is one of the main noise sources, installing it in the outdoor unit 300 can effectively reduce indoor noise and improve the comfort of the indoor environment.

[0035] The utility model discloses an air conditioning unit which can realize positive and negative pressure control of a room, and its working principle and process are as follows: an outdoor fan 303 blows air toward a condenser 302, and sends a portion of fresh air into the air supply ducts of the indoor and outdoor units; when the air supply ratio air valve 105 is opened, the air is sent into the indoor unit 100 through the air supply ducts of the indoor and outdoor units, and the air is mixed with the return air of the indoor unit 100, and then passes through the evaporator 102 in the indoor unit 100, and finally is discharged from the indoor unit 100 to send the fresh air into the room; when the outdoor fan 303 is turned on, the air intake ratio air valve 306 is opened, and a portion of the indoor air is drawn to the outdoor unit 300 through the indoor return air duct 201 and the outdoor unit air intake duct 203; the air supply ratio air valve 105 and the air intake ratio air valve 306 can adjust the ratio of indoor and outdoor air supply and air intake of the outdoor unit 300.

[0036] Example 1

[0037] like Figure 2 As shown, in this embodiment, the air conditioning unit is cooling normally, the air supply proportional air valve 105 and the air intake proportional air valve 306 are closed, the indoor fan 103 and the outdoor fan 303 are turned on normally, the outdoor fan 303 blows air toward the condenser 302, and the return air duct of the indoor unit 100 can introduce indoor air into the indoor unit 100 through the indoor unit return air inlet 104 to return air.

[0038] Example 2

[0039] like Figure 3 As shown, in this embodiment, when the air conditioning unit is cooling normally and the room needs positive pressure fresh air, the indoor fan 103 and the outdoor fan 303 are turned on normally, the air supply proportional air valve 105 is opened to a%, and the air bleed air valve is opened to b%, where a and b range from 0% to 100%. Because the premise of positive pressure in the room is that the air supply volume is greater than the air bleed volume, theoretically, it is sufficient to open the air supply proportional air valve 105 and close the air bleed proportional air valve 306. However, the ventilation efficiency is not high at this time, and the heat of the naturally leaked indoor gas is not recovered, resulting in energy waste. Therefore, the air bleed proportional air valve 306 generally needs to be opened. Therefore, a and b have a certain proportional relationship to ensure that when the air bleed proportional air valve 306 is opened, the room is guaranteed to be positively pressurized. For example, b = a / 4, that is, a = 100%, b = 25%. Therefore, it can be seen that in the positive pressure mode, under this proportional relationship, the maximum opening of b is 25%.

[0040] Example 3

[0041] like Figure 4 As shown, in this embodiment, when the air conditioner is cooling normally and the room requires negative pressure, the outdoor fan 303 and the outdoor fan 303 are turned on normally, the supply air proportioning air valve 105 is closed, and the bleed air proportioning air valve 306 is opened according to user needs.

[0042] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An air conditioning unit capable of realizing positive and negative pressure control in a room, comprising an indoor unit (100) and an outdoor unit (300), wherein the outdoor unit (300) is provided with a condenser (302) and an outdoor fan (303), and the indoor unit (100) is provided with an evaporator (102) and an indoor fan (103), characterized in that: The outdoor unit (300) is connected to an indoor and outdoor unit air supply duct (200) and an outdoor unit air induced air duct (203); the other end of the indoor and outdoor unit air supply duct (200) is connected to the indoor unit (100); the other end of the outdoor unit air induced air duct (203) is connected to an indoor return air duct (201); the indoor return air duct (201) is connected to the indoor unit (100); an air supply proportional air valve (105) is provided at one end of the indoor and outdoor unit air supply duct (200) close to the indoor unit (100); and an air induced air proportional air valve (306) is provided at one end of the outdoor unit air induced air duct (203) close to the outdoor unit (300).

2. An air conditioning unit capable of realizing positive and negative pressure control in a room according to claim 1, characterized in that: The outdoor unit (300) is provided with an outdoor unit air supply port (301) and an outdoor unit air inlet (305); the indoor and outdoor unit air supply duct (200) is connected to the outdoor unit air supply port (301); and the outdoor unit air inlet duct (203) is connected to the outdoor unit air inlet (305).

3. An air conditioning unit capable of realizing positive and negative pressure control in a room according to claim 1, characterized in that: An indoor return air duct bypass port (202) is provided at one end of the indoor return air duct (201), and the outdoor unit induced air duct (203) is connected to the indoor return air duct bypass port (202).

4. An air conditioning unit capable of realizing positive and negative pressure control in a room according to claim 3, characterized in that: The indoor unit (100) is provided with an indoor unit return air port (104), and the indoor return air duct (201) is in communication with the indoor unit return air port (104).

5. The air conditioning unit capable of realizing positive and negative pressure control in a room according to claim 1, characterized in that: An indoor unit air outlet (101) is provided at one end of the indoor unit (100).

6. The air conditioning unit capable of realizing positive and negative pressure control in a room according to claim 1, characterized in that: The indoor unit (100) is provided with a throttle valve (106), one end of the throttle valve (106) is connected to the evaporator (102), and the other end of the throttle valve (106) is connected to the condenser (302).

7. An air conditioning unit capable of realizing positive and negative pressure control in a room according to claim 6, characterized in that: It also includes a compressor (304), which is installed in the outdoor unit (300) and connected to the evaporator (102).

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