Central air conditioner pipeline system

Abstract

The invention relates to the technical field of air conditioners, in particular to a central air conditioner pipeline system which comprises a compressor, a condenser, an expansion valve, an evaporator, an indoor unit, a high-pressure side pipeline, a low-pressure side pipeline and a ventilation pipeline, one end of the high-pressure side pipeline is connected with the compressor, the other end of the high-pressure side pipeline is connected with the expansion valve after passing through the condenser, and one end of the low-pressure side pipeline is connected with the expansion valve; the two ends of the ventilation pipeline are connected with the outdoor space and the indoor space respectively, the evaporator is installed in the indoor unit, and the indoor unit is installed at the end, connected with the indoor space, of the ventilation pipeline and used for adjusting the temperature and humidity of air. An air outlet and an air return opening are formed in the indoor unit, a no-clean dust removal mechanism is installed at the air return opening, and the air return opening is used for sucking back and cooling indoor air and exhausting the indoor air through the air outlet. The effect of avoiding the problem that the air return efficiency of the air return opening is affected due to filter screen blockage is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and particularly to a central air-conditioning pipeline system. Background Art

[0002] The central air-conditioning control system is a key part to ensure the efficient and energy-saving operation of the air-conditioning system. It realizes the precise control of parameters such as temperature, humidity, and air quality by integrating various technologies and devices. Usually, a coolant or cooling water is sent to the indoor unit by an external agency for heat exchange and then transported back to achieve the refrigeration work.

[0003] When the indoor unit is in use, it will suck the indoor air back into the indoor unit through the return air outlet. Due to the refrigeration work of the indoor unit, the indoor air is usually lower than the outdoor air. Sucking the indoor air into the indoor unit for secondary cooling can reduce the energy consumption of the indoor unit.

[0004] There is usually a filter installed at the return air outlet of the existing indoor unit. However, as the usage time increases, dust will adhere to the filter. And because the general indoor unit is installed at a relatively high height, it is rather troublesome to clean the filter. Thus, after a long time, it will affect the return air efficiency of the return air outlet. Summary of the Invention

[0005] In order to avoid the problem that the filter is blocked and thus affects the return air efficiency of the return air outlet, the present application provides a central air-conditioning pipeline system.

[0006] The central air-conditioning pipeline system provided by the present application adopts the following technical solution: A central air-conditioning pipeline system includes a compressor, a condenser, an expansion valve, an evaporator, an indoor unit, a high-pressure side pipeline, a low-pressure side pipeline, and a ventilation pipeline. One end of the high-pressure side pipeline is connected to the compressor, and the other end is connected to the expansion valve after passing through the condenser. One end of the low-pressure side pipeline is connected to the expansion valve, and the other end is connected to the compressor after passing through the evaporator. A complete refrigeration cycle is formed through the high-pressure side pipeline and the low-pressure side pipeline. Both ends of the ventilation pipeline are respectively connected to the outside and the inside of the room. The evaporator is installed inside the indoor unit, and the indoor unit is installed at the end of the ventilation pipeline connected to the inside of the room for adjusting the temperature and humidity of the air. An air outlet and a return air outlet are provided on the indoor unit, and a self-cleaning dust removal mechanism is installed at the return air outlet. The return air outlet is used to suck back the indoor air for cooling and then discharge it through the air outlet.

[0007] By adopting the above technical solutions, the compressor, condenser, expansion valve, evaporator, high-pressure side pipeline and low-pressure side pipeline form a complete refrigeration cycle, ensuring the stability and energy efficiency of the system; the design of the air outlet and air return port on the indoor unit enables the indoor air to be effectively inhaled and discharged after being cooled, improving the refrigeration efficiency of the air-conditioning system; the self-cleaning dust removal mechanism not only avoids the trouble of frequent filter cleaning but also ensures the unobstructed air return port, enhancing the operating efficiency and service life of the entire system.

[0008] In a specific feasible implementation, the self-cleaning dust removal mechanism includes an installation shell. Inside the installation shell, there are a first circuit, a second circuit and a third circuit. The first circuit, the second circuit and the third circuit are connected pairwise to form an N-shaped circuit. The second circuit is inclined. The first circuit is connected to the indoors, and the third circuit is connected to the air return port of the indoor unit. A fan is installed in the first circuit. A water outlet is installed on the side wall of the second circuit, and a water inlet is installed at the bottom of the third circuit.

[0009] By adopting the above technical solutions, the first circuit is connected to the indoors and sucks in indoor air through the fan, enabling the air to pass through the second and third circuits in the N-shaped circuit, increasing the air flow path and improving the dust removal effect; the inclined second circuit is equipped with a water outlet, which can use the water flow to carry away the dust particles in the air, further improving the cleaning efficiency; the water inlet at the bottom of the third circuit can introduce condensed water or other water sources to ensure the internal humid environment, which is conducive to capturing and settling the tiny dust particles in the air; the overall design enables the device to be free from frequent disassembly and cleaning, reducing the maintenance cost, and at the same time ensuring the long-term stable operation of the indoor unit and the high-quality air circulation.

[0010] In a specific feasible implementation, a water collecting tray is installed below the evaporator. The water collecting tray is used to collect the condensed water dripping from the evaporator. The water collecting tray is connected to the water inlet installed at the bottom of the third circuit for transporting the condensed water into the installation shell.

[0011] By adopting the above technical solutions, the water collecting tray can effectively collect the condensed water generated by the evaporator and transport it to the third circuit of the self-cleaning dust removal mechanism. This not only avoids the waste of condensed water but also uses the condensed water as a cleaning medium, improving the working efficiency and service life of the dust removal mechanism. At the same time, this design simplifies the structure of the system, reduces the need for additional water supply devices, and lowers the system cost and maintenance difficulty.

[0012] In a specific feasible implementation, a breathable plate is horizontally installed inside the lower end of the third circuit. The surface of the breathable plate is matrix-opened with a plurality of breathable holes. Both ends of the breathable plate are hermetically connected to the two side wall surfaces of the third circuit.

[0013] By adopting the above technical solution, the design of the air-permeable plate enables the air entering the third circuit to be evenly distributed and discharged through the air-permeable holes, effectively avoiding the problem of uneven pressure caused by air flow concentration and improving the stability of air flow. At the same time, the air-permeable plate is hermetically connected to the side walls of the third circuit, preventing external impurities from entering the internal structure and ensuring the cleanliness and reliability of the system.

[0014] In a specific feasible implementation, it further includes partitions. A plurality of partitions are provided, and the plurality of partitions are horizontally installed in the third channel above the air-permeable plate. One end of each partition extends into the third channel. An inlet is provided on the side wall of the third channel below the air-permeable plate, an outlet is provided on the side wall of the third channel between two adjacent middle partitions, and a water passing hole is provided on the partition above the outlet.

[0015] By adopting the above technical solution, a multi-layer partition structure can be formed below the air-permeable plate, effectively extending the water flow path, increasing the contact time between the condensed water and the air, and enhancing the cooling effect of the condensed water. At the same time, the design of the water passing hole enables the condensed water to flow down step by step, further increasing the heat exchange area between the condensed water and the air and improving the air purification and cooling effects. In addition, the multi-layer partition design can also block large particle impurities from entering the indoor unit, reducing the maintenance frequency and improving the stability and reliability of the system.

[0016] In a specific feasible implementation, a drain port is installed on one side of the bottom of the third channel, and a stop valve is installed on the drain port.

[0017] By adopting the above technical solution, a certain amount of moisture can be discharged in time after accumulating inside the self-cleaning dust removal mechanism, avoiding equipment failure or affecting the air circulation efficiency caused by excessive water accumulation. At the same time, the setting of the stop valve can prevent water leakage in the non-drainage state and ensure the stability and reliability of the system.

[0018] In a specific feasible implementation, four groups of self-cleaning dust removal mechanisms are provided. The four groups of self-cleaning dust removal mechanisms are arranged around the indoor unit and are symmetrically installed in pairs. The upper air return opening of the indoor unit corresponds to the self-cleaning dust removal mechanism.

[0019] In a specific feasible implementation, a display module, a temperature sensor, and a humidity sensor are installed on the indoor unit. The display module is electrically connected to both the temperature sensor and the humidity sensor, and the display module can display the real-time indoor temperature and humidity.

[0020] By adopting the above technical solution, the temperature sensor can detect the actual temperature change in the room, and the humidity sensor can detect the actual humidity change in the room and transmit the data to the display module; the display module receives the data from the temperature sensor and the humidity sensor and intuitively displays the current indoor temperature and humidity values on the display screen.

[0021] In a specific feasible implementation, the indoor unit includes an indoor fan and a cooling coil. The indoor fan is installed at the indoor end of the ventilation duct, and the cooling coil is arranged between the indoor fan and the air outlet of the ventilation duct for auxiliary cooling of the processed air.

[0022] By adopting the above technical solution, the combined design of the indoor fan and the cooling coil can initially blow the air at the indoor end of the ventilation duct, and further strengthen the cooling effect of the air when passing through the cooling coil, making the processed air cooler and more comfortable. This double-layer cooling method not only improves the refrigeration efficiency of the system but also enhances the user experience. At the same time, the setting of the cooling coil also helps to reduce the risk of condensation inside the indoor unit and improve the stability and reliability of the entire system.

[0023] In a specific feasible implementation, a primary filter for filtering the outdoor air before primary cooling is installed at the outdoor end adjacent to the ventilation pipeline.

[0024] By adopting the above technical solution, the filter installed at the outdoor end adjacent to the ventilation pipeline can effectively remove dust and other impurities in the outdoor air entering the system, prevent these impurities from entering the interior of the indoor unit with the air, reduce the wear and blockage of the internal components of the indoor unit, and improve the operation efficiency and service life of the system.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The setting of the dust removal mechanism that does not require cleaning effectively solves the problem that traditional filters need to be frequently cleaned, reducing maintenance costs and labor input; 2. Through the design of the fan and the N-type circuit, effective dust removal and recirculation of indoor air are achieved, improving the return air efficiency of the return air outlet and ensuring the stable operation of the air conditioning system; 3. Using the condensed water generated by the evaporator as the dust removal medium not only saves water resources but also enhances the dust removal effect, further improving the overall energy efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a connection block diagram of an embodiment of the present application.

[0027] Figure 2 It is a schematic structural diagram of the indoor unit in an embodiment of the present application.

[0028] Figure 3 This is a schematic structural diagram of the self-cleaning dust removal mechanism in the embodiment of the present application.

[0029] Figure 4 is Figure 3 a cross-sectional view along the A-A direction in

[0030] Explanation of reference numerals: 1. Compressor; 2. Condenser; 3. Expansion valve; 4. Evaporator; 5. Indoor unit; 6. High-pressure side pipeline; 7. Low-pressure side pipeline; 8. Self-cleaning dust removal mechanism; 81. Installation shell; 811. First circuit; 812. Second circuit; 813. Third circuit; 82. Water inlet; 83. Water outlet; 84. Ventilation plate; 85. Partition; 9. Ventilation pipeline; 10. Primary filter. Detailed implementation manners

[0031] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0032] The embodiment of the present application discloses a central air-conditioning pipeline system.

[0033] As Figure 1 shown, a central air-conditioning pipeline system includes a compressor 1, a condenser 2, an expansion valve 3, an evaporator 4, an indoor unit 5, a high-pressure side pipeline 6, a low-pressure side pipeline 7, and a ventilation pipeline 9. Among them, one end of the high-pressure side pipeline 6 is connected to the compressor 1, and the other end is connected to the expansion valve 3 after passing through the condenser 2. One end of the low-pressure side pipeline 7 is connected to the expansion valve 3, and the other end is connected to the compressor 1 after passing through the evaporator 4, forming a complete refrigeration cycle through the high-pressure side pipeline 6 and the low-pressure side pipeline 7. Both ends of the ventilation pipeline 9 are respectively connected to the outside and the inside. The evaporator 4 is installed in the indoor unit 5, and the indoor unit 5 is installed at one end of the ventilation pipeline 9 connected to the inside, for adjusting the temperature and humidity of the air. An air outlet and a return air outlet are provided on the indoor unit 5, and a self-cleaning dust removal mechanism 8 is installed at the return air outlet, and the return air outlet is used to suck back the indoor air, cool it down and then discharge it through the air outlet.

[0034] As Figures 2 - 4As shown, there are four self-cleaning dust removal mechanisms 8. The self-cleaning dust removal mechanisms 8 are arranged around the indoor unit 5 and are symmetrically installed in pairs, forming an all-round air purification network. Each group can work independently and cooperate with each other to ensure that every corner of the indoor air can be effectively purified. This design not only improves the coverage rate of air purification but also maintains the normal operation of the system when a certain group fails, enhancing the reliability of the system.

[0035] The self-cleaning dust removal mechanism 8 includes an installation shell 81. An installation groove is provided on the circumferential part of the indoor unit 5. The installation shell 81 can be installed in the installation groove by means of bolt connection. A first circuit 811, a second circuit 812, and a third circuit 813 are arranged in the installation shell 81. The first circuit 811, the second circuit 812, and the third circuit 813 are connected to each other in pairs to form an N-shaped circuit. The second circuit 812 is inclined. The first circuit 811 is connected to the indoors, and the third circuit 813 is connected to the air return port of the indoor unit 5.

[0036] In the embodiment of the present application, it further includes a breathable plate 84 and a partition plate 85. The breathable plate 84 is horizontally installed at the lower end of the third circuit 813. A plurality of breathable holes are arranged in a matrix on the surface of the breathable plate 84. Both ends of the breathable plate 84 are hermetically connected to the side walls of the third circuit 813. A number of partition plates 85 are provided. The number of partition plates 85 is horizontally installed in the third channel above the breathable plate 84, and one end of the partition plate 85 extends into the third channel. An inlet 82 is provided on the side wall of the third channel below the breathable plate 84. An outlet 83 is provided on the side wall of the third channel between two adjacent partition plates 85 in the middle. A water passing hole is provided on the partition plate 85 above the outlet 83. A fan is installed in the first circuit 811.

[0037] The fan can be a centrifugal fan or an axial flow fan, and they can effectively suck indoor air into the first circuit 811. The centrifugal fan has a large pressure boosting ability and is suitable for high-resistance environments, while the axial flow fan is more suitable for low-resistance environments, with a large flow rate and low noise.

[0038] The outlet 83 can be a one-way valve or a nozzle. The one-way valve can prevent external pollutants from entering the system, while the nozzle can distribute water flow more evenly when needed.

[0039] The inlet 82 can be an interface with a filter net or a solenoid valve. The interface with a filter net can effectively block large particle impurities and ensure clean water quality, while the solenoid valve can automatically control the water flow switch according to needs.

[0040] The fan can be connected to the first circuit 811 through a flange or other quick connectors, which is convenient for disassembly and maintenance. The outlet 83 can be fixed on the second circuit 812 by means of threads or buckles to ensure smooth water flow out without leakage.

[0041] The fan in the first circuit 811 sucks in indoor air. Due to the inclined design of the second circuit 812, dust in the air settles under the action of gravity, and then is discharged through the water outlet 83. The third circuit 813 receives the condensed water from the water collection tray under the evaporator 4 and evenly distributes the moisture in the air through the ventilation holes on the ventilation plate 84, achieving the effect of purifying the air. This design not only reduces the workload of manual cleaning, but also improves the air quality and system energy efficiency.

[0042] In the embodiment of the present application, it further includes a display module, a temperature sensor, and a humidity sensor. The display module, the temperature sensor, and the humidity sensor are all installed on the indoor unit 5. The display module is electrically connected to both the temperature sensor and the humidity sensor, and the display module can display the real-time indoor temperature and humidity.

[0043] The display module can be a liquid crystal display screen or an LED display screen. Both types of screens can clearly display various information, facilitating users to view. The temperature sensor can be a thermistor or an infrared sensor. The former has a fast response speed, and the latter has a high measurement accuracy. The humidity sensor can be a capacitive humidity sensor or a humidity-sensitive resistor. The former has good stability, and the latter has high sensitivity.

[0044] By connecting with the temperature sensor and the humidity sensor, the display module obtains the data of the indoor environment in real time and intuitively presents it to the user. This design not only enables users to understand the indoor temperature and humidity conditions at any time, but also allows them to adjust the operation mode of the air conditioning system in a timely manner according to the actual situation, improving comfort and energy efficiency. For example, when the indoor temperature is too high, the system can automatically increase the cooling intensity; when the humidity is too high, the system can activate the dehumidification function.

[0045] In the embodiment of the present application, it further includes an indoor fan and a cooling coil. The indoor fan is installed at the indoor end of the ventilation duct, and the cooling coil is arranged between the indoor fan and the air outlet of the ventilation duct, used for auxiliary cooling of the processed air.

[0046] The indoor fan can be a centrifugal fan or a cross-flow fan. Both types of fans can effectively promote air flow. The centrifugal fan is suitable for high-resistance environments, while the cross-flow fan is suitable for low-resistance environments, with a large air volume and low noise. The cooling coil can be a copper tube-aluminum fin type or a stainless steel tube heat exchanger. The former has a high heat transfer efficiency, and the latter has strong corrosion resistance.

[0047] The indoor fan is responsible for sending the processed air into the room, and the cooling coil ensures that the air sent out is cooler by secondary cooling of the air. This dual cooling mechanism not only improves the cooling effect, but also reduces the working load of the main compressor 1 and extends the service life of the system. In addition, the material selection of the cooling coil also directly affects the energy efficiency and durability of the system.

[0048] In the embodiment of the present application, it further includes a primary filter screen 10. The primary filter screen 10 can be a HEPA filter screen or an activated carbon filter screen, and each has its own advantages. The HEPA filter screen can effectively remove fine particles and is suitable for environments with high cleanliness requirements; the activated carbon filter screen can adsorb harmful gases and odors and is suitable for areas with relatively serious pollution.

[0049] The primary filter screen 10 is installed at one end of the ventilation pipeline 9 close to the outside, and can preliminarily purify the air before it enters the system. This is crucial for improving indoor air quality. Especially for users in areas with serious pollution, the primary filter screen 10 can effectively intercept most pollutants and reduce the burden on subsequent air purification equipment. In addition, the selection of the HEPA filter screen and the activated carbon filter screen can be flexibly adjusted according to actual needs to meet the requirements of different application scenarios.

[0050] The implementation principle of a central air-conditioning pipeline system in the embodiment of the present application is as follows: In this embodiment, by installing a self-cleaning dust removal mechanism 8 at the air return opening, the effective self-cleaning function of the indoor unit 5 is realized. This design not only simplifies the maintenance work of users, reduces the maintenance cost, but also extends the service life of the filter screen and improves the overall performance of the system. In addition, by using condensed water as the cleaning medium, it not only saves water resources but also improves the environmental protection performance of the system; at the same time, a display module, a temperature sensor, and a humidity sensor are introduced to realize the comprehensive monitoring of indoor air quality. Users can master the temperature and humidity data in the room at any time, so as to make more reasonable adjustment decisions. This intelligent design not only improves the user experience but also optimizes the energy consumption management of the system and reduces unnecessary energy waste. Generally speaking, this embodiment enhances the user interaction while also improving the intelligent level and energy-saving and environmental protection performance of the system.

[0051] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A central air conditioning pipeline system, comprising a compressor (1), a condenser (2), an expansion valve (3), an evaporator (4), an indoor unit (5), a high-pressure side pipeline (6), a low-pressure side pipeline (7) and a ventilation pipeline (9), characterized in that: One end of the high-pressure side pipeline (6) is connected to the compressor (1), and the other end is connected to the expansion valve (3) after passing through the condenser (2); one end of the low-pressure side pipeline (7) is connected to the expansion valve (3), and the other end is connected to the compressor (1) after passing through the evaporator (4); a complete refrigeration cycle is formed through the high-pressure side pipeline (6) and the low-pressure side pipeline (7); the two ends of the ventilation pipeline (9) are respectively connected to the outdoors and the indoors; the evaporator (4) is installed in the indoor unit (5); the indoor unit (5) is installed on the ventilation pipeline (9) connected to one end of the indoor room, and is used to adjust the temperature and humidity of the air; the indoor unit (5) is provided with an air outlet and a return air outlet; a dust removal mechanism (8) that does not require cleaning is installed at the return air outlet; the return air outlet is used to suck back the indoor air for cooling and then discharge it through the air outlet.

2. The compact central air conditioning piping system according to claim 1, characterized in that: The cleaning-free dust removal mechanism (8) comprises a mounting shell (81), wherein a first circuit (811), a second circuit (812) and a third circuit (813) are arranged in the mounting shell (81), wherein the first circuit (811), the second circuit (812) and the third circuit (813) are connected in pairs to form an N-type circuit, wherein the second circuit (812) is arranged obliquely, wherein the first circuit (811) is connected to the indoor environment, wherein the third circuit (813) is connected to the return air outlet of the indoor unit (5), wherein a fan is installed in the first circuit (811), wherein a water outlet (83) is installed on the side wall of the second circuit (812), and wherein a water inlet (82) is installed at the bottom of the third circuit (813).

3. The compact central air conditioning piping system according to claim 2, characterized in that: A water collecting pan is installed below the evaporator (4) and is used to collect condensed water dripping from the evaporator (4). The water collecting pan is connected to a water inlet (82) installed at the bottom of the third circuit (813) and is used to transport the condensed water into the installation shell (81).

4. The compact central air conditioning piping system according to claim 3 is characterized in that: A ventilation plate (84) is horizontally installed in the lower end of the third circuit (813), and a plurality of ventilation holes are provided in a matrix on the surface of the ventilation plate (84). Both ends of the ventilation plate (84) are sealedly connected to the walls of both sides of the third circuit (813).

5. The compact central air conditioning piping system according to claim 4, characterized in that: The device further comprises a partition plate (85), wherein a plurality of the partition plates (85) are provided, wherein the plurality of the partition plates (85) are horizontally installed in the third channel above the air permeable plate (84), and one end of the partition plate (85) extends into the third channel, a water inlet (82) is provided on the side wall of the third channel below the air permeable plate (84), a water outlet (83) is provided on the side wall of the third channel between two adjacent partition plates (85), and a water hole is provided on the partition plate (85) above the water outlet (83).

6. The compact central air conditioning piping system according to claim 5, characterized in that: A drain port is installed at one side of the bottom of the third channel, and a water stop valve is installed on the drain port.

7. The compact central air conditioning piping system according to claim 2, characterized in that: The no-cleaning dust removal mechanism (8) is provided in four groups, and the four groups of the no-cleaning dust removal mechanism (8) are arranged around the indoor unit (5) and are installed symmetrically in pairs. The return air outlet on the indoor unit (5) is arranged corresponding to the no-cleaning dust removal mechanism (8).

8. The compact central air conditioning piping system according to claim 2, characterized in that: The indoor unit (5) is equipped with a display module, a temperature sensor and a humidity sensor. The display module is electrically connected to the temperature sensor and the humidity sensor. The display module can display the real-time indoor temperature and humidity.

9. The compact central air conditioning piping system according to claim 1, characterized in that: The indoor unit (5) comprises an indoor fan and a cooling coil. The indoor fan is installed at one end of the ventilation duct located indoors. The cooling coil is arranged between the indoor fan and the air outlet of the ventilation duct to assist in cooling the treated air.

10. The compact central air conditioning piping system according to claim 1, characterized in that: A primary filter screen (10) for filtering outdoor air before primary cooling is installed at one end of the ventilation pipeline (9) adjacent to the outdoors.

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