Air conditioning unit and whole house air environment system

Abstract

The embodiment of the utility model discloses an air conditioning unit and a whole house air environment system. The air conditioning unit and the whole house air environment system are used for heating or refrigerating external air and adjusting air quality. The air conditioning unit comprises an evaporator, a compressor, a first condenser, a second condenser, a four-way valve, a throttling valve and a controller. A first opening of the evaporator is connected with the first end of the throttling valve through a pipeline, the second end of the throttling valve is connected with a first opening of the second condenser through a first pipeline, the first pipeline is provided with a first branch pipeline connected to a first opening of the first condenser, and an inlet of the compressor is connected to an S connecting pipe opening of the four-way valve through a pipeline. An outlet of the compressor is connected to a D connecting pipe opening of the four-way valve through a pipeline, a second opening of the evaporator is connected to an E connecting pipe opening of the four-way valve through a pipeline, a C connecting pipe opening of the four-way valve is connected to a second opening of the second condenser through a second pipeline, and the second pipeline is provided with a second branch pipeline connected to a second opening of the first condenser. And the four-way valve, the throttle valve and the compressor are all connected with the controller.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electrical appliances, and in particular to an air conditioning unit and a whole-house air environment system for heating or cooling and air quality adjustment. Background Art

[0002] With the continued growth of the national economy and the continuous development of science and technology, people's living and production standards are constantly improving, and people's requirements for quality of life, work and living environment, temperature and humidity comfort, and air quality are becoming increasingly higher. To regulate the temperature and humidity of indoor air and improve the air quality of work and living environments, existing air conditioning units can achieve temperature adjustment by cooling when the actual outside air temperature is too high and heating when the actual outside air temperature is too low.

[0003] However, existing air conditioning units require a chiller structure to achieve temperature adjustment. This makes the air conditioning unit complex and bulky, and the high cost of chillers imposes a significant financial burden on users. Furthermore, existing systems suffer from technical issues such as poor comfort, lack of fresh air supply, high unit energy consumption, and difficulty ensuring indoor air quality. Utility Model Content

[0004] The embodiments of the present application provide an air conditioning unit and a whole-house air environment system for heating or cooling and air quality adjustment.

[0005] In a first aspect, an embodiment of the present application provides an air conditioning unit, comprising: an evaporator, a compressor, a first condenser, a second condenser, a four-way valve, a throttle valve, and a controller;

[0006] The first port of the evaporator is connected to the first end of the throttle valve via a pipeline, the second end of the throttle valve is connected to the first port of the second condenser via a first pipeline, the first pipeline is provided with a first branch pipeline connected to the first port of the first condenser, the inlet of the compressor is connected to the S pipe port of the four-way valve via a pipeline, the outlet of the compressor is connected to the D pipe port of the four-way valve via a pipeline, the second port of the evaporator is connected to the E pipe port of the four-way valve via a pipeline, the C pipe port of the four-way valve is connected to the second port of the second condenser via a second pipeline, and the second pipeline is provided with a second branch pipeline connected to the second port of the first condenser;

[0007] The four-way valve, the throttle valve and the compressor are all connected to the controller.

[0008] Optionally, the air conditioning unit further comprises: a control valve;

[0009] The control valve is provided on both the first branch pipeline and the second branch pipeline, and the control valve is connected to the controller.

[0010] Optionally, the air conditioning unit further comprises: a third condenser;

[0011] A third branch pipe is provided on the first branch pipe, and the third branch pipe is connected to the first port of the third condenser. A fourth branch pipe is provided on the second branch pipe, and the fourth branch pipe is connected to the second port of the third condenser. Flow valves are provided on both the third branch pipe and the fourth branch pipe, and the flow valves are connected to the controller.

[0012] A second aspect of an embodiment of the present application provides a whole-house air environment system, comprising the aforementioned air conditioning unit, wherein the air conditioning unit comprises: an evaporator, a compressor, a first condenser, a second condenser, a four-way valve, and a controller; the system further comprises: an air supply cavity, a heat dissipation cavity, a first temperature and humidity sensor, and an air supply fan;

[0013] The air supply cavity is provided with a return air port and an air supply port, the air supply cavity is communicated with the indoor space via a pipe connected to the return air port, and the air supply cavity is communicated with the indoor space via a pipe connected to the air supply port. In the direction from the return air port to the air supply port, the evaporator, the compressor, the first temperature and humidity sensor, the first condenser and the air blower are sequentially arranged in the air supply cavity, and the indoor space is provided with a second temperature and humidity sensor;

[0014] The second condenser is provided in the heat dissipation cavity, the four-way valve is connected to the evaporator, the compressor and the second condenser respectively through pipelines, and the air blower is connected to the controller.

[0015] Optionally, the system further comprises: a heating humidifier;

[0016] The heating humidifier is provided in the air supply cavity between the first condenser and the air supply fan, and is used for humidifying the gas passing through the heating humidifier in a heating mode.

[0017] Optionally, the system further comprises: a first filter;

[0018] The first filter is provided in the air supply cavity between the return air port and the evaporator, and is used to filter the gas flowing from the indoor space to the air supply cavity.

[0019] Optionally, the system further comprises: a preheater;

[0020] The preheater is provided in the air supply cavity between the first filter and the evaporator, and is used to preheat the gas passing through the preheater.

[0021] Optionally, the system further includes: a third temperature and humidity sensor and a fourth temperature and humidity sensor;

[0022] The third temperature and humidity sensor is arranged in the air supply cavity, next to the return air outlet;

[0023] The fourth temperature and humidity sensor is arranged next to the air outlet.

[0024] Optionally, the system further comprises: a heat dissipation component;

[0025] An opening is provided on one side of the heat dissipation cavity, and the heat dissipation component is used to discharge the hot air in the heat dissipation cavity to the outside through the opening.

[0026] Optionally, the system further comprises: an exhaust cavity;

[0027] The exhaust cavity is provided with an air inlet and an air outlet. The exhaust cavity is communicated with the indoor space through a pipe connected to the air inlet, and the air outlet is communicated with the outdoors. An exhaust fan is provided next to the air outlet in the exhaust cavity, and the controller is connected to the exhaust fan.

[0028] Optionally, a fresh air inlet is further provided on the return air inlet side of the air supply cavity, and outdoor air is supplied into the air supply cavity through a pipe connected to the fresh air inlet;

[0029] A carbon dioxide concentration detection sensor is provided beside the return air outlet, and the carbon dioxide concentration detection sensor is used to detect the carbon dioxide content of the gas flowing through.

[0030] Optionally, if the air conditioning unit further includes a third condenser, the system further includes: a fifth temperature and humidity sensor and a sixth temperature and humidity sensor;

[0031] The fifth temperature and humidity sensor is arranged next to the air inlet, and is used to detect the temperature and humidity of the gas at the air inlet. The sixth temperature and humidity sensor is arranged in the heat dissipation cavity, next to the second condenser, and is used to detect the temperature and humidity of the gas in the heat dissipation cavity;

[0032] The third condenser is arranged in the exhaust cavity between the exhaust fan and the air inlet.

[0033] Optionally, the system further comprises: a second filter;

[0034] In the exhaust cavity, a second filter is provided between the air inlet and the third condenser, and the second filter is used to filter the gas flowing into the exhaust cavity.

[0035] Optionally, the heat dissipation cavity, the exhaust cavity and the air supply cavity are distributed sequentially from top to bottom;

[0036] or,

[0037] The heat dissipation cavity, the exhaust cavity and the air supply cavity are distributed laterally in sequence.

[0038] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0039] The air conditioning unit of this application has two modes: cooling mode and heating mode, which can adjust the temperature of the outside air according to actual needs. The air conditioning unit can achieve the temperature regulation of the outside air without a chiller, which reduces the system complexity and cost, and reduces the financial burden on users.

[0040] The whole-house air environment system of the present application can cool when the indoor space temperature is high and heat when the indoor space temperature is low. It performs stepless adjustment based on the variable frequency compressor to achieve constant temperature in the indoor space. In addition, the evaporator can dehumidify, and the heating humidifier can humidify, to ensure that the humidity in the indoor space is constant, with fluctuations not exceeding 5%. The exhaust cavity and related device configurations in the system can realize the exhaust heat recovery function, and then reuse the recovered heat in the air supply cavity to save energy. The system's compressor is built-in and supplies air through pipes, which can achieve silent air supply function without noise pollution. The equipped carbon dioxide concentration detection sensor can detect the air quality of the indoor space, and then keep the oxygen in the indoor space at a comfortable level through fresh air adjustment. The system is also equipped with a filter to filter out impurities, realize the purification and sterilization functions, and ensure a healthy and reliable indoor environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of an embodiment of an air-conditioning unit disclosed in this application;

[0042] Figure 2 This is a schematic diagram of another embodiment of an air-conditioning unit disclosed in this application;

[0043] Figure 3 This is a schematic diagram of an embodiment of a whole-house air environment system disclosed in this application;

[0044] Figure 4 This is a schematic diagram of another embodiment of a whole-house air environment system disclosed in this application;

[0045] Figure 5 This is a schematic diagram of the refrigerant flow in the refrigeration mode disclosed in this application;

[0046] Figure 6 This is a schematic diagram of the refrigerant flow in the heating mode disclosed in this application. DETAILED DESCRIPTION

[0047] The present application is further described in detail below with reference to the accompanying drawings.

[0048] The embodiments of the present application provide an air conditioning unit and a whole-house air environment system for heating or cooling external air and regulating air quality.

[0049] With the continuous growth of my country's national economy, people's requirements for indoor comfort and air quality are constantly increasing. Existing air conditioning units can adjust the temperature of the outside air. However, existing solutions require chillers to achieve temperature adjustment, which makes the air conditioning units complex and large, and the cost is high. To solve the above problems, the air conditioning unit provided in this application can achieve heating or cooling without a chiller. In addition, due to various factors such as poor temperature and humidity comfort, inability to ensure fresh air supply, poor indoor air quality, and the installation of outdoor units that affect the appearance, existing split air conditioners or window air conditioners have gradually become seasonal products and are increasingly difficult to adapt to environmental requirements. Among them, in order to meet the user's demand for constant indoor temperature, in existing solutions, the system will use a chiller to exchange heat with the indoor air temperature. However, the use of a chiller means high costs. To solve the above problems, this application provides a whole-house air environment system that can achieve constant indoor temperature without a chiller. The system has low complexity and low cost, which can reduce the financial burden on users. In addition, the whole-house air environment system can also achieve the effects of constant humidity, constant stillness, constant cleanliness and constant oxygen, which is of great significance to reducing the total energy consumption of air conditioning and improving indoor air quality. In the future, it will be more and more widely accepted and adopted in high-end apartments, high-end residences, villas and other places. Its appearance meets the needs of modern people.

[0050] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0051] The terms "first," "second," "third," "fourth," and so forth, in the description and claims of the present invention and in the accompanying drawings are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments described herein can be practiced in an order other than that illustrated or described herein. Furthermore, the terms "including," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions.

[0052] The air conditioning unit of this application is described below. Figure 1 , an embodiment of the air conditioning unit of the present application includes: an evaporator 4, a compressor 5, a first condenser 6, a second condenser 11, a four-way valve 21, a throttle valve 24 and a controller;

[0053] The first port of evaporator 4 is connected to the first end of throttle valve 24 via a pipe. The second end of throttle valve 24 is connected to the first port of second condenser 11 via a first pipe 32. First pipe 32 is provided with a first branch pipe 34 connected to the first port of first condenser 6. The inlet of compressor 5 is connected to the S port of four-way valve 21 via a pipe. The outlet of compressor 5 is connected to the D port of four-way valve 21 via a pipe. The second port of evaporator 4 is connected to the E port of four-way valve 21 via a pipe. The C port of four-way valve 21 is connected to the second port of second condenser 11 via a second pipe 33. Second pipe 33 is provided with a second branch pipe 35 connected to the second port of first condenser 6. Specifically, first condenser 6 operates in cooling mode and does not operate in heating mode. Second condenser 11 heats in cooling mode and cools in heating mode, thereby exchanging heat with the refrigerant. In heating mode, the D and E ports of the four-way valve 21 are connected, and the S and C ports are connected. The evaporator 4 heats in heating mode and cools in cooling mode. In cooling mode, the D and C ports of the four-way valve 21 are connected, and the S and E ports are connected.

[0054] The four-way valve 21 , the throttle valve 24 and the compressor 5 are all connected to the controller.

[0055] The operating principle of this embodiment is as follows: In cooling mode, the controller controls the evaporator 4 to cool, the first condenser 6 and the second condenser 11 to heat, the controller controls the compressor 5 to increase or decrease the load, controls the D and C ports of the four-way valve 21 to communicate, and the S and E ports to communicate, and controls the throttle valve 24 to open, so that the refrigerant is compressed by the compressor 5 and then flows into the condenser to release heat, and then flows through the throttle valve 24 to the evaporator 4 to absorb heat. The ambient air absorbs heat and is cooled and dehumidified by the evaporator 4. In heating mode, the controller controls the evaporator 4 to heat, the first condenser 6 is not in operation, and the second condenser 11 is cooled. The controller controls the compressor 5 to increase or decrease the load, controls the D and E ports of the four-way valve 21 to communicate, and the S and C ports to communicate, and controls the throttle valve 24 to allow the refrigerant to enter the evaporator 4 to release heat, then flow to the operating condenser to absorb heat, and then return to the compressor 5. The ambient air is heated by the evaporator 4.

[0056] In the embodiment of the present application, the air conditioning unit has two modes: cooling mode and heating mode, which can adjust the temperature of the outside air according to actual needs. The air conditioning unit can achieve the temperature adjustment of the outside air without the need for a chiller, which reduces the system complexity and cost, thus reducing the financial burden on users.

[0057] In order to improve heating or cooling efficiency, Figure 1 On the basis of the embodiment, a third condenser 10 and a control valve 22 are added. Figure 2 The structure and working principle of the embodiment are similar to Figure 1 The embodiment is similar, the difference lies in the installation and principle of the third condenser 10 and the control valve 22, please refer to Figure 2 , another embodiment of the air conditioning unit of the present application includes: an evaporator 4, a compressor 5, a first condenser 6, a second condenser 11, a four-way valve 21, a throttle valve 24, a control valve 22, a third condenser 10 and a controller;

[0058] The first port of evaporator 4 is connected to the first end of throttle valve 24 via a pipe. The second end of throttle valve 24 is connected to the first port of second condenser 11 via a first pipe 32. First pipe 32 is provided with a first branch pipe 34 connected to the first port of first condenser 6. The inlet of compressor 5 is connected to the S port of four-way valve 21 via a pipe. The outlet of compressor 5 is connected to the D port of four-way valve 21 via a pipe. The second port of evaporator 4 is connected to the E port of four-way valve 21 via a pipe. The C port of four-way valve 21 is connected to the second port of second condenser 11 via a second pipe 33. Second pipe 33 is provided with a second branch pipe 35 connected to the second port of first condenser 6. Specifically, first condenser 6 operates in cooling mode and does not operate in heating mode. Second condenser 11 heats in cooling mode and cools in heating mode, thereby exchanging heat with the refrigerant. In heating mode, the D and E ports of the four-way valve 21 are connected, and the S and C ports are connected. The evaporator 4 heats in heating mode and cools in cooling mode. In cooling mode, the D and C ports of the four-way valve 21 are connected, and the S and E ports are connected.

[0059] The four-way valve 21 , the throttle valve 24 and the compressor 5 are all connected to the controller.

[0060] The first branch pipeline 34 and the second branch pipeline 35 are both provided with a control valve 22 , and the control valve 22 is connected to the controller.

[0061] A third branch pipe 36 is provided on the first branch pipe 34, and the third branch pipe 36 is connected to the first port of the third condenser 10. A fourth branch pipe 37 is provided on the second branch pipe 35, and the fourth branch pipe 37 is connected to the second port of the third condenser 10. Flow valves 23 are provided on both the third branch pipe 36 and the fourth branch pipe 37, and the flow valve 23 is connected to the controller.

[0062] The working principle of this embodiment is as follows: in cooling mode, the controller controls the evaporator 4 to cool, the control valve 22 is opened, the flow valve 23 is opened, the first condenser 6, the second condenser 11 and the third condenser 10 to heat, the controller controls the compressor 5 to increase or decrease the load, controls the D and C ports of the four-way valve 21 to be connected, the S and E ports to be connected, and controls the throttle valve 24 to be opened, so that the refrigerant is compressed by the compressor 5 and flows from two paths to the condenser to release heat, and then passes through the throttle valve 24 to the evaporator 4 to absorb heat. The external gas absorbs heat and is cooled and dehumidified through the evaporator 4. In heating mode, the controller controls the evaporator 4 to heat, the first condenser 6 does not work, the second condenser 11 is cooling, the control valve 22 is closed, and the third condenser 10 is cooling. The controller controls the load of compressor 5, connects ports D and E, and ports S and C of four-way valve 21, and controls throttle valve 24, allowing the refrigerant to enter evaporator 4 to release heat, then flow to the working condenser to absorb heat and return to compressor 5. The ambient air is heated by evaporator 4.

[0063] In the embodiment of the present application, the air conditioning unit has two modes: cooling mode and heating mode, which can adjust the temperature of the outside air according to actual needs. The air conditioning unit can achieve the temperature adjustment of the outside air without the need for a chiller, which reduces the system complexity and cost, thus reducing the financial burden on users.

[0064] The air conditioning unit of the present application has been described above. The following describes a whole-house air environment system of the present application. Figure 3 An embodiment of a whole-house air environment system of the present application includes the air conditioning unit of the aforementioned embodiment, the air conditioning unit including an evaporator 4, a compressor 5, a first condenser 6, a second condenser 11, a four-way valve 21 and a controller. The system also includes: an air supply cavity 1, a heat dissipation cavity 25, a first temperature and humidity sensor 16 and a blower 8;

[0065] The air supply cavity 1 is provided with a return air port and an air supply port. The air supply cavity 1 is communicated with the indoor space 29 via a return air duct 27 connected to the return air port. The air supply cavity 1 is communicated with the indoor space 29 via a supply air duct 28 connected to the supply air port. In the direction from the return air port to the supply air port, an evaporator 4, a compressor 5, a first temperature and humidity sensor 16, a first condenser 6 and a blower 8 are sequentially provided in the air supply cavity 1. A second temperature and humidity sensor 18 is provided in the indoor space 29.

[0066] A second condenser 11 is disposed within the heat dissipation cavity 25. The four-way valve 21 is connected to the evaporator 4, the compressor 5, and the second condenser 11 via pipes. Specifically, the first port of the evaporator 4 is connected to the first end of the throttle valve 24 via a pipe. The second end of the throttle valve 24 is connected to the first port of the second condenser 11 via a first pipe 32. The first pipe 32 is provided with a first branch pipe 34 connected to the first port of the first condenser 6. The inlet of the compressor 5 is connected to the S port of the four-way valve 21 via a pipe. The outlet of the compressor 5 is connected to the D port of the four-way valve 21 via a pipe. The second port of the evaporator 4 is connected to the E port of the four-way valve 21 via a pipe. The C port of the four-way valve 21 is connected to the second port of the second condenser 11 via a second pipe 33. The second pipe 33 is provided with a second branch pipe 35 connected to the second port of the first condenser 6. The first condenser 6 operates in cooling mode and does not operate in heating mode. The second condenser 11 generates heat in cooling mode and cools in heating mode, thereby exchanging heat with the refrigerant. In heating mode, the D and E ports of the four-way valve 21 are connected, and the S and C ports are connected. The evaporator 4 heats in heating mode and cools in cooling mode. In cooling mode, the D and C ports of the four-way valve 21 are connected, and the S and E ports are connected.

[0067] The throttle valve 24, the four-way valve 21, the control valve 22, the compressor 5 and the blower 8 are all connected to the controller.

[0068] The working principle of this embodiment will now be described. When the indoor temperature is too high, placing the system in cooling mode, the controller will compare the preset temperature input by the user with the actual indoor temperature detected by the second temperature and humidity sensor 18. If the actual indoor temperature does not meet the requirement, the controller will control the blower 8 and compressor 5 to operate, and control the four-way valve 21 so that the second port of the evaporator 4 is connected to the inlet of the compressor 5, and the outlet of the compressor 5 is connected to the second port of the first condenser 6 and the second port of the second condenser 11, respectively. Under the blowing force of the blower 8, the indoor air circulates in the air supply cavity 1 and the indoor space 29, and the air flows into the return air port of the air supply cavity 1. At this time, the evaporator 4 is cooling, and the heat of the air is transferred to the refrigerant in the evaporator 4 when passing through the evaporator 4. The refrigerant then flows to the condenser through the pipeline, and the first condenser 6 and the second condenser 11 generate heat to release heat. The temperature of the gas flowing through the evaporator 4 is reduced and then flows through the first temperature and humidity sensor 16 to the first condenser 6 to absorb heat and flow back to the indoor space 29. The controller will collect the dew point temperature of the gas detected by the first temperature and humidity sensor 16 to see if it meets the conditions. If it meets the conditions, the compressor 5 maintains a constant output and runs continuously. If it does not meet the conditions, the operating frequency of the compressor 5 is controlled to increase or decrease the load. After adjustment, the compressor 5 continues to work and adjusts the throttle valve 24 and the control valve 22 accordingly until the actual indoor temperature reaches the preset temperature. When the indoor temperature is too low, the system is in heating mode, and the controller will compare the preset temperature input by the user with the actual indoor temperature detected by the second temperature and humidity sensor 18. If the actual indoor temperature does not meet the requirements, the controller will control the air blower 8 and the compressor 5 to work, and control the four-way valve 21 so that the second port of the evaporator 4 is connected to the outlet of the compressor 5, and the inlet of the compressor 5 is connected to the second port of the first condenser 6 and the second port of the second condenser 11 respectively. The indoor air circulates in the air supply cavity 1 and the indoor space 29 under the blowing force of the air blower 8, and the air flows into the return air port of the air supply cavity 1. At this time, the evaporator 4 generates heat, and the air absorbs heat when passing through the evaporator 4. The refrigerant then flows to the condenser through the pipeline. The first condenser 6 does not work, and the second condenser 11 cools. The temperature of the gas flowing through the evaporator 4 rises and then flows through the first temperature and humidity sensor 16 to the air outlet and flows back to the indoor space 29. The controller will collect the dew point temperature of the gas detected by the first temperature and humidity sensor 16 to see if it meets the conditions. If it meets the conditions, the compressor 5 maintains a constant output and runs continuously. If it does not meet the conditions, the operating frequency of the compressor 5 is controlled to increase or decrease the load. After adjustment, the compressor 5 continues to work and adjusts the throttle valve 24 and the control valve 22 accordingly until the actual indoor temperature reaches the preset temperature.

[0069] In the embodiment of the present application, the whole-house air environment system has two modes, one is a cooling mode and the other is a heating mode. When the indoor temperature is too high, the whole-house air environment system can be put into the cooling mode. At this time, the evaporator 4 cools and absorbs the heat of the gas entering the air supply cavity 1. The first condenser 6 and the second condenser 11 heat and readjust the temperature of the gas. When the indoor temperature is too low, the whole-house air environment system can be put into the heating mode. At this time, the evaporator 4 heats and the refrigerant transfers heat to the gas in the air supply cavity 1, causing the gas temperature to rise. The whole-house air environment system can achieve a constant temperature in the indoor space 29 without a chiller. The system has low complexity and low cost, which reduces the economic burden on users.

[0070] See also Figures 4 to 6 Another embodiment of a whole-house air environment system of the present application includes: an air supply cavity 1, a return air duct 27, an air supply duct 28, a heat dissipation cavity 25, a controller, a throttle valve 24, a four-way valve 21, a heating humidifier 7, a first filter 2, a preheater 3, a third temperature and humidity sensor 15, a fourth temperature and humidity sensor 17, a heat dissipation assembly 12, an exhaust cavity 26, an exhaust duct 31, a fresh air duct 30, a fifth temperature and humidity sensor 19, a sixth temperature and humidity sensor 20, a third condenser 10, and a second filter 9;

[0071] The air supply chamber 1 is provided with a return air inlet and a supply air inlet. The air supply chamber 1 communicates with the indoor space 29 via a return air duct 27 connected to the return air inlet, and communicates with the indoor space 29 via a supply air duct 28 connected to the supply air inlet. An evaporator 4, a compressor 5, a first temperature and humidity sensor 16, a first condenser 6, and a blower 8 are sequentially arranged within the air supply chamber 1 from the return air inlet to the supply air inlet. A second temperature and humidity sensor 18 is provided within the indoor space 29. Specifically, the first temperature and humidity sensor 16 is used to detect the dew point temperature and humidity of the gas in the air supply chamber 1 after being processed by the evaporator 4, and the second temperature and humidity sensor 18 is used to detect the actual indoor temperature of the indoor space 29. When the blower 8 is in operation, it provides a blowing force that circulates air through the indoor space 29, the return air duct 27, the air supply chamber 1, and the supply air duct 28. The compressor 5 is used to compress the refrigerant. The first condenser 6 operates in cooling mode and does not operate in heating mode. This is achieved by adjusting the opening and closing of the control valve 22.

[0072] A second condenser 11 is disposed within the heat dissipation cavity 25. The four-way valve 21 is connected to the evaporator 4, the compressor 5, and the second condenser 11 via pipes. Specifically, the first port of the evaporator 4 is connected to the first end of the throttle valve 24 via a pipe. The second end of the throttle valve 24 is connected to the first port of the second condenser 11 via a first pipe 32. The first pipe 32 is provided with a first branch pipe 34 connected to the first port of the first condenser 6. The inlet of the compressor 5 is connected to the S port of the four-way valve 21 via a pipe. The outlet of the compressor 5 is connected to the D port of the four-way valve 21 via a pipe. The second port of the evaporator 4 is connected to the E port of the four-way valve 21 via a pipe. The C port of the four-way valve 21 is connected to the second port of the second condenser 11 via a second pipe 33. The second pipe 33 is provided with a second branch pipe 35 connected to the second port of the first condenser 6. The first condenser 6 operates in cooling mode and does not operate in heating mode. The second condenser 11 generates heat in cooling mode and cools in heating mode, thereby exchanging heat with the refrigerant. In heating mode, the D and E ports of the four-way valve 21 are connected, and the S and C ports are connected. The evaporator 4 heats in heating mode and cools in cooling mode. In cooling mode, the D and C ports of the four-way valve 21 are connected, and the S and E ports are connected.

[0073] The throttle valve 24, four-way valve 21, control valve 22, compressor 5, and blower 8 are all connected to a controller. Specifically, the controller controls and adjusts these valves, compressor 5, blower 8, and exhaust fan 13 based on the cooling and heating modes, the preset temperature, and the actual indoor temperature. The throttle valve 24 controls the flow of the refrigerant, and the control valve 22 opens or closes the first condenser 6.

[0074] To achieve constant humidity in the room, a heating humidifier 7 can be used to adjust the humidity in heating mode. A heating humidifier 7 is provided between the first condenser 6 and the blower 8 in the air supply cavity 1. The heating humidifier 7 is used to humidify the gas passing through the heating humidifier 7 in heating mode. Specifically, in cooling mode, the evaporator 4 cools the room and the three condensers heat the room. After the indoor air enters the air supply cavity 1, it is dehumidified by the evaporator 4 and then flows back to the indoor space 29. In heating mode, the evaporator 4 heats the room and the first condenser 6 does not work. The second condenser 11 and the third condenser 10 cool the room. After the indoor air enters the air supply cavity 1, it is humidified by the heating humidifier 7 and then flows back to the indoor space 29.

[0075] In order to achieve constant cleanliness in the room, the indoor air can be sterilized and purified by using the first filter 2 for filtration. In the air supply cavity 1, a first filter 2 is provided between the return air port and the evaporator 4. The first filter 2 is used to filter the gas in the indoor space 29 that passes through the return air duct 27 to the air supply cavity 1. The first filter 2 can be a primary / medium efficiency filter, or a PM2.5 filter, or an electronic purification device, or a UV sterilization device, etc. A high-efficiency filter can also be configured at the air outlet of the unit, which can effectively absorb toxic and harmful substances in the air. At the same time, it can also kill mites in the air, prevent bacteria and viruses, and realize the air treatment, purification and sterilization functions to ensure a healthy and reliable indoor environment.

[0076] To improve heating efficiency, preheating can be performed with a preheater 3. Within the air supply chamber 1, between the first filter 2 and the evaporator 4, the preheater 3 is installed to preheat the gas passing through it. When low-temperature fresh air enters and the system is in heating mode, the preheater 3 operates to preheat the passing gas.

[0077] The third temperature and humidity sensor 15 is arranged in the air supply cavity 1, next to the return air outlet, and the fourth temperature and humidity sensor 17 is arranged in the air supply pipe 28, next to the air supply outlet. Through these two temperature and humidity sensors, the temperature and humidity of the return air outlet and the air supply outlet can be monitored in real time.

[0078] To improve heat dissipation efficiency, heat dissipation assembly 12 is used for heat exchange. An opening is provided on one side of heat dissipation cavity 25. Heat dissipation assembly 12 is used to discharge the hot air in heat dissipation cavity 25 to the outside through the opening. Heat dissipation assembly 12 can be snapped onto the opening or connected by other means, the details of which are not limited here. Heat dissipation assembly 12 can be a heat dissipation fan or other device, the details of which are not limited here.

[0079] After the system has been running for a period of time, the indoor oxygen concentration begins to decrease and the indoor carbon dioxide concentration begins to rise due to human activity. This causes the oxygen in indoor space 29 to fail to reach suitable conditions. To provide users with a suitable constant oxygen environment, an exhaust duct 31 and a fresh air duct 30 are added. The exhaust cavity 26 is provided with an air inlet and an air outlet. The exhaust cavity 26 communicates with the indoor space 29 via the exhaust duct 31 connected to the air inlet, and the air outlet communicates with the outdoors. An exhaust fan 13 is provided next to the air outlet in the exhaust cavity 26, and a controller is connected to the exhaust fan 13. A fresh air outlet is also provided on the air outlet side of the air supply cavity 1, and a fresh air duct 30 is connected to the fresh air outlet to deliver outdoor air into the air supply cavity 1. A carbon dioxide concentration detection sensor 14 is provided next to the return air outlet in the return air duct 27. The carbon dioxide concentration detection sensor 14 is used to detect the carbon dioxide content of the gas in the return air duct 27. Specifically, if the carbon dioxide concentration detection sensor 14 detects that the carbon dioxide concentration of the flowing gas is high, the controller will control the air valve of the fresh air duct 30 to allow the fresh air to enter the air supply cavity 1 through the fresh air inlet, and control the exhaust fan 13 to work, so as to draw part of the gas in the indoor space 29 into the exhaust cavity 26, and flow out from the air outlet of the exhaust cavity 26 to the outside to ensure the constant concentration of oxygen and carbon dioxide.

[0080] In order to achieve energy recycling, the heat of the gas to be discharged is absorbed and utilized. The fifth temperature and humidity sensor 19 is set in the exhaust pipe 31, next to the air inlet. The fifth temperature and humidity sensor 19 is used to detect the temperature and humidity of the gas at the air inlet. The sixth temperature and humidity sensor 20 is set in the heat dissipation cavity 25, next to the second condenser 11. The sixth temperature and humidity sensor 20 is used to detect the temperature and humidity of the gas in the heat dissipation cavity 25. The third condenser 10 is set in the exhaust cavity 26 between the exhaust fan 13 and the air inlet. The first branch pipe 34 is set on the pipe between the throttle valve 24 and the first condenser 6. The first branch pipe 34 is connected to the first port of the third condenser 10. The second branch pipe 35 is set on the pipe between the four-way valve 21 and the first condenser 6. The second branch pipe 35 is connected to the second port of the third condenser 10. The first branch pipe 34 and the second branch pipe 35 are both provided with flow valves 23. Specifically, when the exhaust is turned on, the opening of the flow valve 23 is adjusted according to the temperature difference detected by the fifth temperature and humidity sensor 19 and the sixth temperature and humidity sensor 20, allowing part of the refrigerant to enter the third condenser 10 to absorb the heat of the hot air passing through the third condenser 10, and applied to the air supply cavity 1 to save energy.

[0081] To prevent the exhaust gas from significantly impacting the natural environment, a second filter 9 can be installed to protect the environment. Within the exhaust cavity 26, between the air inlet and the third condenser 10, a second filter 9 is installed to filter the gas flowing into the exhaust cavity 26. Specifically, the second filter 9 can be a primary / medium / high efficiency filter, a PM2.5 filter, an electronic purification device, or a UV sterilizer, among other options, without limitation.

[0082] It is understood that the heat dissipation cavity 25, the exhaust cavity 26, and the air supply cavity 1 are distributed sequentially from top to bottom, or the heat dissipation cavity 25, the exhaust cavity 26, and the air supply cavity 1 are distributed sequentially in a horizontal direction. The specific distribution can be set according to actual needs and is not limited here. This embodiment is described based on the former.

[0083] In addition, the system's compressor 5 is built-in, and the system box has a certain sound insulation effect, which can prevent the sound of the compressor 5 from being transmitted. The system uses air ducts for air supply / exhaust, and there is no fan indoors, which can achieve silent air supply and no noise pollution.

[0084] The working principle of achieving constant temperature and humidity in this embodiment is described below.

[0085] In cooling mode, the controller controls evaporator 4 for cooling, first condenser 6 and second condenser 11 for heating (if exhaust air is on, third condenser 10 also for heating). The controller controls compressor 5 to increase or decrease load, heat sink 12 to coordinate operation at the corresponding speed, and controls throttle valve 24 and control valve 22 to open, so that the refrigerant is compressed by compressor 5 and flows through two (or three) paths to the condenser to release heat, and then passes through throttle valve 24 to evaporator 4 for heat absorption. When the indoor air flows into the air supply chamber 1, it absorbs heat and is cooled and dehumidified by evaporator 4, then is slightly heated by first condenser 6 and flows back to indoor space 29 through the closed heating humidifier 7. In heating mode, the controller controls evaporator 4 to generate heat, controls valve 22 to close, deactivating first condenser 6 and enabling second condenser 11 to generate cooling (if exhaust air is on, third condenser 10 also generates heat). The controller controls compressor 5 to increase or decrease load, with heat sink 12 operating at the corresponding speed. The controller also controls throttle valve 24, allowing refrigerant to enter evaporator 4 to release heat before flowing to the operating condenser to absorb heat and return to compressor 5. When indoor air flows into air supply chamber 1, it is heated by evaporator 4, then humidified by the activated heating humidifier 7, before flowing back into indoor space 29. The temperature of indoor space 29 remains comfortable and stable, fluctuating within ±0.5°C, and the humidity remains within a pleasant range, fluctuating within ±5%.

[0086] In this embodiment, the whole-house air environment system has two modes, one is a cooling mode and the other is a heating mode. When the indoor temperature is too high, the whole-house air environment system can be put into the cooling mode. At this time, the evaporator 4 cools and absorbs the heat of the gas entering the air supply cavity 1. The first condenser 6 and the second condenser 11 heat and readjust the temperature of the gas. When the indoor temperature is too low, the whole-house air environment system can be put into the heating mode. At this time, the evaporator 4 heats and the refrigerant transfers heat to the gas in the air supply cavity 1, causing the gas temperature to rise. The whole-house air environment system can achieve a constant temperature in the indoor space 29 without a chiller. The system has low complexity and low cost, which reduces the economic burden on users. The whole-house air environment system can achieve the effects of constant temperature, constant humidity, constant oxygen, constant cleanliness and constant quietness, giving users a better experience.

[0087] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned embodiments and will not be repeated here.

[0088] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0089] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0090] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0091] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air conditioning unit, characterized in that: include: Evaporator, compressor, first condenser, second condenser, four-way valve, throttle valve and controller; The first port of the evaporator is connected to the first end of the throttle valve via a pipeline, the second end of the throttle valve is connected to the first port of the second condenser via a first pipeline, the first pipeline is provided with a first branch pipeline connected to the first port of the first condenser, the inlet of the compressor is connected to the S pipe port of the four-way valve via a pipeline, the outlet of the compressor is connected to the D pipe port of the four-way valve via a pipeline, the second port of the evaporator is connected to the E pipe port of the four-way valve via a pipeline, the C pipe port of the four-way valve is connected to the second port of the second condenser via a second pipeline, and the second pipeline is provided with a second branch pipeline connected to the second port of the first condenser; The four-way valve, the throttle valve and the compressor are all connected to the controller.

2. The air conditioning unit according to claim 1, characterized in that: The air conditioning unit further comprises: a control valve; The control valve is provided on both the first branch pipeline and the second branch pipeline, and the control valve is connected to the controller.

3. The air conditioning unit according to claim 2, characterized in that: The air conditioning unit further comprises: a third condenser; A third branch pipe is provided on the first branch pipe, and the third branch pipe is connected to the first port of the third condenser. A fourth branch pipe is provided on the second branch pipe, and the fourth branch pipe is connected to the second port of the third condenser. Flow valves are provided on both the third branch pipe and the fourth branch pipe, and the flow valves are connected to the controller.

4. A whole-house air environment system, characterized in that: The air conditioning unit according to any one of claims 1 to 3, wherein the air conditioning unit comprises: an evaporator, a compressor, a first condenser, a second condenser, a four-way valve and a controller, and the system further comprises: an air supply cavity, a heat dissipation cavity, a first temperature and humidity sensor and an air supply fan; The air supply cavity is provided with a return air port and an air supply port, the air supply cavity is communicated with the indoor space via a pipe connected to the return air port, and the air supply cavity is communicated with the indoor space via a pipe connected to the air supply port. In the direction from the return air port to the air supply port, the evaporator, the compressor, the first temperature and humidity sensor, the first condenser and the air blower are sequentially arranged in the air supply cavity, and the indoor space is provided with a second temperature and humidity sensor; The second condenser is provided in the heat dissipation cavity, the four-way valve is connected to the evaporator, the compressor and the second condenser respectively through pipelines, and the air blower is connected to the controller.

5. The whole-house air environment system according to claim 4, characterized in that: The system further comprises: a heating humidifier; The heating humidifier is provided in the air supply cavity between the first condenser and the air supply fan, and is used for humidifying the gas passing through the heating humidifier in a heating mode.

6. The whole-house air environment system according to claim 4, characterized in that: The system further comprises: a first filter; The first filter is provided in the air supply cavity between the return air port and the evaporator, and is used to filter the gas flowing from the indoor space to the air supply cavity.

7. The whole-house air environment system according to claim 6, characterized in that: The system further comprises: a preheater; The preheater is provided in the air supply cavity between the first filter and the evaporator, and is used to preheat the gas passing through the preheater.

8. The whole-house air environment system according to claim 4, characterized in that: The system further includes: a third temperature and humidity sensor and a fourth temperature and humidity sensor; The third temperature and humidity sensor is arranged in the air supply cavity, next to the return air outlet; The fourth temperature and humidity sensor is arranged next to the air outlet.

9. The whole-house air environment system according to claim 4, characterized in that: The system further includes: a heat dissipation component; An opening is provided on one side of the heat dissipation cavity, and the heat dissipation component is used to discharge the hot air in the heat dissipation cavity to the outside through the opening.

10. The whole-house air environment system according to claim 4, characterized in that: The system further comprises: an exhaust cavity; The exhaust cavity is provided with an air inlet and an air outlet. The exhaust cavity is communicated with the indoor space through a pipe connected to the air inlet, and the air outlet is communicated with the outdoors. An exhaust fan is provided next to the air outlet in the exhaust cavity, and the controller is connected to the exhaust fan.

11. The whole-house air environment system according to claim 10, characterized in that: The air supply cavity is further provided with a fresh air inlet on the return air inlet side, and outdoor air is supplied into the air supply cavity through a pipe connected to the fresh air inlet; A carbon dioxide concentration detection sensor is provided beside the return air outlet, and the carbon dioxide concentration detection sensor is used to detect the carbon dioxide content of the gas flowing through.

12. The whole-house air environment system according to claim 10, characterized in that: If the air conditioning unit further includes a third condenser, the system further includes: a fifth temperature and humidity sensor and a sixth temperature and humidity sensor; The fifth temperature and humidity sensor is arranged next to the air inlet, and is used to detect the temperature and humidity of the gas at the air inlet. The sixth temperature and humidity sensor is arranged in the heat dissipation cavity, next to the second condenser, and is used to detect the temperature and humidity of the gas in the heat dissipation cavity; The third condenser is arranged in the exhaust cavity between the exhaust fan and the air inlet.

13. The whole-house air environment system according to claim 12, characterized in that: The system further comprises: a second filter; In the exhaust cavity, a second filter is provided between the air inlet and the third condenser, and the second filter is used to filter the gas flowing into the exhaust cavity.

14. The whole-house air environment system according to claim 10, characterized in that: The heat dissipation cavity, the exhaust cavity and the air supply cavity are distributed sequentially from top to bottom; or, The heat dissipation cavity, the exhaust cavity and the air supply cavity are distributed laterally in sequence.

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