A type of constant temperature and dehumidification split air conditioner

Abstract

This utility model discloses a split-type air conditioner with constant temperature and dehumidification, including an indoor unit and an outdoor unit connected to each other. The outdoor unit's refrigeration circuit includes a compressor, a first condenser, a solenoid valve, a regulating valve, and a check valve. The indoor unit's heat exchange circuit includes an evaporator, a first air valve, a second air valve, a third air valve, and a second condenser. The indoor unit also includes an air supply chamber. The compressor, first condenser, and evaporator are sequentially connected to form a first refrigerant circuit. The compressor, solenoid valve, regulating valve, second condenser, check valve, first condenser, and evaporator are sequentially connected to form a second refrigerant circuit. The evaporator, first air valve, and air supply chamber are sequentially connected to form a first heat exchange circuit. The evaporator, second air valve, second condenser, third air valve, and air supply chamber are sequentially connected to form a second heat exchange circuit. This utility model has a simple principle, is easy to use, and allows for switching between cooling mode and constant temperature and dehumidification mode at any time. Furthermore, the indoor temperature is adjustable and controllable in dehumidification mode.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a constant temperature and dehumidification split air conditioner. Background Technology

[0002] With the development of society and the economy, and the continuous improvement of residents' income and living standards, indoor temperature and humidity comfort regulation has gradually become an urgent need for the people. Currently, household split-type air conditioners are widely used and have entered ordinary households. These air conditioners are mainly used for temperature regulation, cooling in summer, and heating in winter if they are heat pump type. However, current air conditioners, whether cooling or heating, primarily focus on temperature regulation and rarely address humidity control. However, in some regions, such as the transitional seasons (spring and winter) in the coastal areas of southern my country, indoor temperatures are typically below 10℃ and relative humidity is above 80%, creating a need for dehumidification in low-temperature, high-humidity environments. If a split-type air conditioner is used for dehumidification in such situations, the cooling effect of the indoor unit will result in a low indoor air outlet temperature (15-20℃), significantly impacting comfort.

[0003] Most split-type air conditioners on the market currently use mechanical compression Freon refrigeration. When dehumidification is required, indoor air is cooled and dehumidified by the indoor unit of the split-type air conditioner, lowering the temperature of the humid air to the dew point temperature, causing condensation to form in the air. The low-temperature, low-humidity air from the evaporator is then directly sent into the room. The relatively low outlet air temperature can cause a poor user experience and limit the application range of split-type air conditioners. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a split-type air conditioner with constant temperature and dehumidification, which can switch between cooling mode and constant temperature and dehumidification mode at any time, and the indoor temperature can be adjusted and controlled in dehumidification mode, thus improving the user experience.

[0005] The technical solution of this utility model is: a constant temperature and dehumidification split air conditioner, including an indoor unit and an outdoor unit connected to each other. The refrigeration circuit of the outdoor unit is provided with a compressor, a first condenser, a solenoid valve, a regulating valve and a check valve. The heat exchange circuit of the indoor unit is provided with an evaporator, a first air valve, a second air valve, a third air valve and a second condenser. The indoor unit is also provided with an air supply chamber.

[0006] The compressor, the first condenser, and the evaporator are sequentially connected in a loop to form a first refrigerant circuit; the compressor, the solenoid valve, the regulating valve, the second condenser, the check valve, the first condenser, and the evaporator are sequentially connected in a loop to form a second refrigerant circuit; the evaporator, the first air valve, and the air supply cavity are sequentially connected to form a first heat exchange circuit in the cooling mode; and the evaporator, the second air valve, the second condenser, the third air valve, and the air supply cavity are sequentially connected to form a second heat exchange circuit in the constant temperature dehumidification mode.

[0007] This air conditioning system achieves temperature regulation while dehumidifying by adding a reheater (i.e., a second condenser) to the indoor unit and using a temperature sensor. By adding regulating valves, solenoid valves, and check valves to the refrigerant circuit, a new refrigerant circuit is formed with the second condenser, reheating the air in the indoor unit during dehumidification mode. The regulating valves automatically adjust the valve opening in the refrigerant circuit based on real-time feedback of the indoor ambient temperature, thus enabling adjustable and controllable indoor ambient temperature during dehumidification mode and improving overall user comfort. Switching between air valves (i.e., the first, second, and third air valves) in the indoor unit allows for switching between air conditioning cooling mode and constant temperature dehumidification mode. The principle and system structure are simple, yet the operation is stable and reliable.

[0008] When the constant temperature and dehumidification split air conditioner is in cooling mode, the first refrigerant circuit and the first heat exchange circuit are opened; when the constant temperature and dehumidification split air conditioner is in constant temperature and dehumidification mode, the first refrigerant circuit, the second refrigerant circuit, and the second heat exchange circuit are opened.

[0009] In the first refrigerant circuit, a filter and a throttling device are also provided between the first condenser and the evaporator.

[0010] The indoor unit is also equipped with a pre-filter, which is located at the air inlet of the indoor unit.

[0011] The primary filter is made of PET material.

[0012] An evaporator fan is installed at the outlet of the air supply cavity.

[0013] The first condenser is also equipped with a condenser fan.

[0014] A temperature sensor is also installed at the outlet of the air supply cavity to monitor the indoor temperature in real time.

[0015] A humidity sensor is also installed at the outlet of the air supply cavity to monitor indoor humidity in real time.

[0016] The operating principle of the above-mentioned constant temperature and dehumidification split air conditioner is as follows:

[0017] (I) Cooling Mode: When the constant temperature dehumidification split air conditioner switches to cooling mode, the compressor in the outdoor unit starts, the first condenser and condenser fan start, the first air valve in the indoor unit opens, and the evaporator fan starts. At this time, there are two cycles within the constant temperature dehumidification split air conditioner:

[0018] (a) Outdoor unit circulation: The high-temperature and high-pressure refrigerant vapor discharged from the compressor enters the first condenser, where it exchanges heat with the air and condenses into a medium-temperature and high-pressure refrigerant liquid. The refrigerant liquid continues to flow through the filter to remove impurities and then enters the throttling device to be throttled into a low-temperature and low-pressure refrigerant liquid. Then, it exchanges heat with the high-temperature indoor air in the evaporator of the indoor unit. After absorbing heat from the indoor air, the liquid refrigerant evaporates into gaseous refrigerant vapor and enters the compressor for compression again, thus completing one refrigeration cycle.

[0019] (b) Indoor unit circulation: The treated high-temperature air in the room first passes through the primary filter (PET material) to filter out most of the dust, hair and other impurities, and then enters the indoor unit evaporator. In the evaporator, it is cooled by the low-temperature and low-pressure liquid refrigerant, and then passes through the first air valve and is sent into the air supply chamber by the evaporator fan, and thus into the room.

[0020] Among them, the temperature control loop: In cooling mode, the compressor control board adjusts the compressor speed in real time based on the real-time feedback from the indoor unit's temperature sensor and compares it with the user's temperature setting value, so as to realize that the indoor temperature is adjustable and controllable in cooling mode.

[0021] (II) Constant Temperature Dehumidification Mode: When the constant temperature dehumidification split air conditioner switches to dehumidification mode, the compressor in the outdoor unit starts, the first condenser and condenser fan start, the solenoid valve opens, and the regulating valve begins to adjust. In the indoor unit, the first air valve closes, the second and third air valves open, and the evaporator fan starts. At this time, the constant temperature dehumidification split air conditioner has two cycles:

[0022] (a) Outdoor unit circulation: The low-temperature, low-pressure gaseous refrigerant is compressed by the compressor and then discharged as a high-temperature, high-pressure gaseous refrigerant. Since the solenoid valve and regulating valve in the outdoor unit are open, the high-temperature, high-pressure refrigerant vapor discharged at this time is divided into two paths: one path goes to the first condenser, and the other path goes to the second condenser through the solenoid valve and regulating valve.

[0023] First path: In the first condenser, the high-temperature, high-pressure gaseous refrigerant exchanges heat with the air and becomes a medium-temperature, high-pressure liquid refrigerant. After the liquid refrigerant passes through the filter to remove impurities, it enters the throttling device and is throttled into a low-temperature, low-pressure liquid refrigerant. Then, in the indoor unit evaporator, it exchanges heat with the high-humidity indoor air and becomes a low-temperature, low-pressure gaseous refrigerant vapor, which enters the compressor for further compression, thus completing one refrigeration cycle.

[0024] Second route: As the solenoid valve opens and the regulating valve begins to adjust, the high-temperature and high-pressure gaseous refrigerant at the compressor outlet enters the second condenser after passing through the solenoid valve and the regulating valve. In the second condenser, it exchanges heat with the dehumidified, low-temperature and low-humidity air from the evaporator and becomes a medium-temperature and high-pressure liquid refrigerant. After passing through the check valve, it enters the first condenser to continue exchanging heat.

[0025] (b) Indoor unit circulation: After the high-humidity indoor air is filtered by the primary filter (PET material) to remove dust, hair and other impurities, it enters the evaporator in the indoor unit. Since the surface temperature of the evaporator is lower than the dew point temperature of the air, the water vapor in the air will condense into condensate and be discharged outside the equipment. After the indoor air is cooled and dehumidified by the evaporator, it becomes low-temperature and low-humidity air. At this time, it enters the second condenser through the second air valve. In the second condenser, it exchanges heat with the high-temperature and high-pressure gaseous refrigerant at the compressor outlet and rises in temperature. Since the evaporator fan has been started, the air enters the air supply chamber through the third air valve and is then delivered into the indoor space.

[0026] Among them, the humidity control loop: In constant temperature dehumidification mode, the compressor control board adjusts the compressor speed in real time based on the real-time feedback from the indoor humidity sensor and compares it with the user's humidity setting value, so as to realize that the indoor humidity is adjustable and controllable in dehumidification mode.

[0027] Temperature control loop: The indoor unit's temperature sensor monitors the indoor temperature in real time and compares the real-time temperature value with the target temperature value set by the user in dehumidification mode. This comparison value is then sent to the regulating valve as an adjustment signal. The regulating valve uses this comparison value as feedback data to control the opening degree of the regulating valve and ultimately control the indoor ambient temperature.

[0028] Compared with the prior art, this utility model has the following advantages:

[0029] This constant temperature and dehumidification split air conditioner has a simple principle and system structure, is easy to use, and can switch between cooling mode and constant temperature and dehumidification mode at any time. In dehumidification mode, the indoor temperature is adjustable and controllable, and the operation is stable and reliable, improving the user experience.

[0030] This constant temperature and dehumidification split-type air conditioner achieves temperature regulation while dehumidifying by adding a second condenser to the indoor unit. By adding components such as a regulating valve, solenoid valve, and check valve to the refrigerant circuit, a new refrigerant circuit is formed with the second condenser, enabling reheating of the air in the indoor unit during dehumidification mode. The regulating valve automatically adjusts the valve opening in the refrigerant circuit, thus achieving adjustable and controllable indoor ambient temperature during dehumidification mode and improving overall user comfort. Switching between air conditioning cooling mode and constant temperature and dehumidification mode is achieved through switching between air valves within the indoor unit. The principle is simple, and the operation is stable and reliable. Attached Figure Description

[0031] Figure 1 This is a system schematic diagram of the constant temperature and dehumidification split air conditioner in cooling mode.

[0032] Figure 2 This is a system schematic diagram of the constant temperature and dehumidification split air conditioner in constant temperature and dehumidification mode.

[0033] The components indicated by the reference numerals in the above figures are as follows: 1 is the compressor, 2 is the first condenser, 3 is the solenoid valve, 4 is the regulating valve, 5 is the check valve, 6 is the evaporator, 7 is the first air valve, 8 is the second air valve, 9 is the third air valve, 10 is the second condenser, 11 is the air supply chamber, 12 is the filter, 13 is the throttling device, 14 is the primary filter, 15 is the evaporator fan, 16 is the condenser fan, S1 is the temperature sensor, and S2 is the humidity sensor. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0035] Example

[0036] This embodiment describes a split-type air conditioner with constant temperature and dehumidification, such as... Figure 1 or Figure 2As shown, the system includes an indoor unit and an outdoor unit connected to each other. The outdoor unit's refrigeration circuit includes a compressor 1, a first condenser 2, a solenoid valve 3, a regulating valve 4, and a check valve 5. The indoor unit's heat exchange circuit includes an evaporator 6, a first air valve 7, a second air valve 8, a third air valve 9, and a second condenser 10. The indoor unit also includes an air supply chamber 11. The compressor, first condenser, and evaporator are sequentially connected in a loop to form a first refrigerant circuit. The compressor, solenoid valve, regulating valve, second condenser, check valve, first condenser, and evaporator are sequentially connected in a loop to form a second refrigerant circuit. The evaporator, first air valve, and air supply chamber are sequentially connected to form a first heat exchange circuit in cooling mode. The evaporator, second air valve, second condenser, third air valve, and air supply chamber are sequentially connected to form a second heat exchange circuit in constant temperature dehumidification mode. When the constant temperature dehumidification split-type air conditioner is in cooling mode, the first refrigerant circuit and the first heat exchange circuit are activated. When the constant temperature dehumidification split-type air conditioner is in constant temperature dehumidification mode, the first refrigerant circuit, the second refrigerant circuit, and the second heat exchange circuit are activated. This air conditioning system achieves temperature regulation while dehumidifying by adding a reheater (i.e., a second condenser) to the indoor unit and using a temperature sensor. By adding regulating valves, solenoid valves, and check valves to the refrigerant circuit, a new refrigerant circuit is formed with the second condenser, reheating the air in the indoor unit during dehumidification mode. The regulating valves automatically adjust the valve opening in the refrigerant circuit based on real-time feedback of the indoor ambient temperature, thus enabling adjustable and controllable indoor ambient temperature during dehumidification mode and improving overall user comfort. Switching between air valves (i.e., the first, second, and third air valves) in the indoor unit allows for switching between air conditioning cooling mode and constant temperature dehumidification mode. The principle and system structure are simple, yet the operation is stable and reliable.

[0037] Furthermore, in the first refrigerant circuit, a filter 12 and a throttling device 13 are also provided between the first condenser and the evaporator. A pre-filter 14 is also provided in the indoor unit, located at the air inlet. In this embodiment, the pre-filter is made of PET material, but other special-function filters can be used as needed to achieve different filtration effects. An evaporator fan 15 is provided at the outlet of the air supply cavity. A condenser fan 16 is also provided on the first condenser. A temperature sensor S1 and a humidity sensor S2 are also provided at the outlet of the air supply cavity for real-time monitoring of indoor temperature and humidity.

[0038] The operating principle of the above-mentioned constant temperature and dehumidification split air conditioner is as follows:

[0039] (a) Cooling mode (e.g.) Figure 1(As shown): When the constant temperature and dehumidification split air conditioner switches to cooling mode, the compressor in the outdoor unit starts, the first condenser and condenser fan start, the first air valve in the indoor unit opens, and the evaporator fan starts. At this time, there are two cycles within the constant temperature and dehumidification split air conditioner:

[0040] (a) Outdoor unit circulation: The high-temperature and high-pressure refrigerant vapor discharged from the compressor enters the first condenser, where it exchanges heat with the air and condenses into a medium-temperature and high-pressure refrigerant liquid. The refrigerant liquid continues to flow through the filter to remove impurities and then enters the throttling device to be throttled into a low-temperature and low-pressure refrigerant liquid. Then, it exchanges heat with the high-temperature indoor air in the evaporator of the indoor unit. After absorbing heat from the indoor air, the liquid refrigerant evaporates into gaseous refrigerant vapor and enters the compressor for compression again, thus completing one refrigeration cycle.

[0041] (b) Indoor unit circulation: The treated high-temperature air in the room first passes through the primary filter (PET material) to filter out most of the dust, hair and other impurities, and then enters the indoor unit evaporator. In the evaporator, it is cooled by the low-temperature and low-pressure liquid refrigerant, and then passes through the first air valve and is sent into the air supply chamber by the evaporator fan, and thus into the room.

[0042] Among them, the temperature control loop: In cooling mode, the compressor control board adjusts the compressor speed in real time based on the real-time feedback from the indoor unit's temperature sensor and compares it with the user's temperature setting value, so as to realize that the indoor temperature is adjustable and controllable in cooling mode.

[0043] (II) Constant Temperature Dehumidification Mode (e.g.) Figure 2 (As shown): When the constant temperature and dehumidification split air conditioner switches to dehumidification mode, the compressor in the outdoor unit starts, the first condenser and condenser fan start, the solenoid valve opens, and the regulating valve begins to adjust. In the indoor unit, the first air valve closes, the second and third air valves open, and the evaporator fan starts. At this time, the constant temperature and dehumidification split air conditioner has two cycles:

[0044] (a) Outdoor unit circulation: The low-temperature, low-pressure gaseous refrigerant is compressed by the compressor and then discharged as a high-temperature, high-pressure gaseous refrigerant. Since the solenoid valve and regulating valve in the outdoor unit are open, the high-temperature, high-pressure refrigerant vapor discharged at this time is divided into two paths: one path goes to the first condenser, and the other path goes to the second condenser through the solenoid valve and regulating valve.

[0045] First path: In the first condenser, the high-temperature, high-pressure gaseous refrigerant exchanges heat with the air and becomes a medium-temperature, high-pressure liquid refrigerant. After the liquid refrigerant passes through the filter to remove impurities, it enters the throttling device and is throttled into a low-temperature, low-pressure liquid refrigerant. Then, in the indoor unit evaporator, it exchanges heat with the high-humidity indoor air and becomes a low-temperature, low-pressure gaseous refrigerant vapor, which enters the compressor for further compression, thus completing one refrigeration cycle.

[0046] Second route: As the solenoid valve opens and the regulating valve begins to adjust, the high-temperature and high-pressure gaseous refrigerant at the compressor outlet enters the second condenser after passing through the solenoid valve and the regulating valve. In the second condenser, it exchanges heat with the dehumidified, low-temperature and low-humidity air from the evaporator and becomes a medium-temperature and high-pressure liquid refrigerant. After passing through the check valve, it enters the first condenser to continue exchanging heat.

[0047] (b) Indoor unit circulation: After the high-humidity indoor air is filtered by the primary filter (PET material) to remove dust, hair and other impurities, it enters the evaporator in the indoor unit. Since the surface temperature of the evaporator is lower than the dew point temperature of the air, the water vapor in the air will condense into condensate and be discharged outside the equipment. After the indoor air is cooled and dehumidified by the evaporator, it becomes low-temperature and low-humidity air. At this time, it enters the second condenser through the second air valve. In the second condenser, it exchanges heat with the high-temperature and high-pressure gaseous refrigerant at the compressor outlet and rises in temperature. Since the evaporator fan has been started, the air enters the air supply chamber through the third air valve and is then delivered into the indoor space.

[0048] Among them, the humidity control loop: In constant temperature dehumidification mode, the compressor control board adjusts the compressor speed in real time based on the real-time feedback from the indoor humidity sensor and compares it with the user's humidity setting value, so as to realize that the indoor humidity is adjustable and controllable in dehumidification mode.

[0049] Temperature control loop: The indoor unit's temperature sensor monitors the indoor temperature in real time and compares the real-time temperature value with the target temperature value set by the user in dehumidification mode. This comparison value is then sent to the regulating valve as an adjustment signal. The regulating valve uses this comparison value as feedback data to control the opening degree of the regulating valve and ultimately control the indoor ambient temperature.

[0050] As described above, the present invention can be well implemented. The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made in accordance with the content of the present invention are covered by the scope of protection claimed by the claims of the present invention.

Claims

1. A constant-temperature dehumidifying split-type air conditioner comprising an indoor unit and an outdoor unit connected to each other, characterized in that, The outdoor unit's refrigeration circuit includes a compressor, a first condenser, a solenoid valve, a regulating valve, and a check valve. The indoor unit's heat exchange circuit includes an evaporator, a first air valve, a second air valve, a third air valve, and a second condenser. The indoor unit also includes an air supply chamber. The compressor, the first condenser, and the evaporator are sequentially connected in a loop to form a first refrigerant circuit; the compressor, the solenoid valve, the regulating valve, the second condenser, the check valve, the first condenser, and the evaporator are sequentially connected in a loop to form a second refrigerant circuit; the evaporator, the first air valve, and the air supply cavity are sequentially connected to form a first heat exchange circuit in the cooling mode; and the evaporator, the second air valve, the second condenser, the third air valve, and the air supply cavity are sequentially connected to form a second heat exchange circuit in the constant temperature dehumidification mode.

2. The constant-temperature dehumidifying split-type air conditioner according to claim 1, wherein When the constant temperature and dehumidification split air conditioner is in cooling mode, the first refrigerant circuit and the first heat exchange circuit are opened; when the constant temperature and dehumidification split air conditioner is in constant temperature and dehumidification mode, the first refrigerant circuit, the second refrigerant circuit, and the second heat exchange circuit are opened.

3. The constant-temperature dehumidifying split-type air conditioner according to claim 1, wherein In the first refrigerant circuit, a filter and a throttling device are also provided between the first condenser and the evaporator.

4. The constant-temperature dehumidifying split-type air conditioner according to claim 1, wherein The indoor unit is also equipped with a pre-filter, which is located at the air inlet of the indoor unit.

5. A split-type air conditioner with constant temperature and dehumidification according to claim 4, characterized in that, The primary filter is made of PET material.

6. The constant-temperature dehumidifying split-type air conditioner according to claim 1, wherein An evaporator fan is installed at the outlet of the air supply cavity.

7. The constant-temperature dehumidifying split-type air conditioner according to claim 1, wherein The first condenser is also equipped with a condenser fan.

8. The constant-temperature dehumidifying split-type air conditioner according to claim 1, wherein A temperature sensor is also installed at the outlet of the air supply cavity.

9. The constant-temperature dehumidifying split-type air conditioner according to claim 1, wherein A humidity sensor is also installed at the outlet of the air supply cavity.

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