Split type air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, and particularly discloses a split type air conditioning system which comprises an outdoor main machine, an indoor machine and a radiator arranged on the outer side of the indoor machine, the radiator is connected with the outdoor main machine and the indoor machine through a first pipeline, a one-way valve is arranged on the first pipeline, and the radiator and the indoor machine are connected in series through the first pipeline. A one-way valve is arranged on the pipeline, control is easy, and noise generated when the air conditioning system operates is lowered; simultaneous heating is achieved through hot air of the indoor unit and natural heat dissipation of the radiator, so that the indoor temperature can be rapidly increased, or independent windless heating is conducted through the radiator, the situation that hot air is blown to the human body for a long time to cause discomfort is prevented, and the heat supply comfort degree is improved; the temperature sensor is arranged on the outer side of the indoor unit, the environment temperature can be obtained more accurately, and therefore when the controller controls the outdoor host to operate at the environment temperature fed back by the temperature sensor, temperature control is more accurate, and the heat supply comfort degree is further improved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more specifically, to a split-type air conditioning system. Background Technology

[0002] Air conditioning systems typically consist of an outdoor unit and an indoor unit. The indoor unit usually provides heating by delivering hot air into the room, but this hot air can cause discomfort when it blows directly onto people. Furthermore, existing air conditioning systems use expansion valves (capillary tubes) or electric valves installed in the ductwork to control the flow and direction of the refrigerant. However, expansion valves (capillary tubes) cannot completely cut off the flow of the refrigerant, and electric valves are complex to control and have low reliability.

[0003] Therefore, it is necessary to propose a split-type air conditioning system to at least partially solve the problems existing in the prior art. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, this utility model provides a split-type air conditioning system, including: an outdoor unit, an indoor unit, and a radiator disposed outside the indoor unit. The radiator is connected to the outdoor unit and the indoor unit through a first pipe, and the first pipe is provided with a first one-way valve.

[0006] Preferably, it further includes a temperature sensor and a controller, wherein the temperature sensor is disposed on the outside of the indoor unit, and the controller is electrically connected to both the temperature sensor and the outdoor unit.

[0007] Preferably, the radiator and the indoor unit are separate units. The radiator and the indoor unit are connected in series through a first pipe and then connected to the outdoor unit. The radiator has a working fluid channel, which is connected to the outdoor unit and the indoor unit through the first pipe. When the split-type air conditioner provides heating, the high-temperature working fluid first passes through the radiator to dissipate heat and then passes through the indoor unit.

[0008] Preferably, it further includes: a second pipe, one end of which is connected to the first pipe between the radiator and the outdoor unit, and the other end of which is connected to the first pipe between the first check valve and the indoor unit, and the second pipe is provided with a second check valve.

[0009] Preferably, it also includes a third conduit, the two ends of which are connected to the outdoor unit and the indoor unit, respectively.

[0010] Preferably, the outdoor unit, radiator, and indoor unit form a heating circuit through a first pipe and a third pipe.

[0011] Preferably, a cooling circuit is formed between the outdoor unit and the indoor unit via a third pipe and a second pipe.

[0012] Preferably, it further includes: a fourth pipe, one end of which is connected to the first pipe between the first one-way valve and the indoor unit, and the other end of which is connected to the third pipe, wherein the fourth pipe is provided with a third one-way valve.

[0013] Preferably, a pressure-dividing circuit is formed between the outdoor unit and the radiator through a first pipe, a fourth pipe, and a third pipe.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] The split-type air conditioning system described in this utility model achieves simultaneous heating through the hot air from the indoor unit and the natural heat dissipation of the radiator, enabling the room to heat up quickly, or through the radiator for separate windless heating, preventing hot air from blowing on the human body for a long time and causing discomfort, thus improving heating comfort.

[0016] The temperature sensor is located on the outside of the indoor unit, which can more accurately obtain the ambient temperature. This allows the controller to control the outdoor unit to operate at the ambient temperature fed back by the temperature sensor, resulting in more accurate temperature control and further improving heating comfort.

[0017] The pipeline is equipped with a check valve, which simplifies control and reduces noise during air conditioning system operation.

[0018] A pressure-dividing circuit is installed between the outdoor unit and the radiator to reduce the pressure on the indoor unit when the air conditioning system is heating, thus ensuring that the indoor unit can operate stably and safely for a long time.

[0019] The other advantages, objectives and features of the present invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of the present invention. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the split-type air conditioning system described in this utility model;

[0022] Figure 2 This is a schematic diagram of the working fluid flow direction of the split-type air conditioning system described in this utility model under heating conditions;

[0023] Figure 3 This is a schematic diagram of the working fluid flow direction of the split-type air conditioning system described in this utility model under cooling conditions;

[0024] Figure 4 A schematic diagram showing the addition of a pressure-dividing circuit to the split-type air conditioning system described in this utility model;

[0025] Figure 5 A schematic diagram of the working fluid flow direction under heating conditions after adding a pressure-dividing circuit to the split-type air conditioning system described in this utility model;

[0026] Figure 6 A schematic diagram showing the working fluid flow direction under cooling conditions after adding a pressure-dividing circuit to the split-type air conditioning system described in this utility model. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0028] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0029] like Figure 1 As shown, this utility model provides a split-type air conditioning system, including: an outdoor unit 1, an indoor unit 2, and a radiator 3 disposed outside the indoor unit 2. The radiator 3 is connected to the outdoor unit 1 and the indoor unit 2 through a first pipe 7, and the first pipe 7 is provided with a first one-way valve 4.

[0030] A first one-way valve 4 is provided on the first pipe 7 connecting the radiator 3 and the indoor unit 2. The first one-way valve 4 allows the working fluid to flow only from the radiator 3 to the indoor unit 2.

[0031] The first pipeline 7 uses a one-way valve to control the flow direction and flow rate of the working fluid. The control is relatively simple and highly reliable, and it also reduces the noise of the air conditioning system during operation and improves the comfort during heating.

[0032] Furthermore, it also includes a temperature sensor and a controller, wherein the temperature sensor is disposed on the outside of the indoor unit 2, and the controller is electrically connected to the temperature sensor and the outdoor unit 1 respectively.

[0033] The indoor unit 2 contains a fan and a convection radiator, while the radiator 3 is located on the outside of the indoor unit 2. During heating operation, the refrigerant first enters the radiator 3 from the outdoor unit 1 and then enters the indoor unit 2. The fan inside the indoor unit 2 can be turned on or off. When the fan in the indoor unit 2 is off, complete airless heating can be achieved through the radiator 3, improving heating comfort.

[0034] When the air conditioning system starts running, the fan of indoor unit 2 can be turned on to provide heat simultaneously through indoor unit 2 and radiator 3, allowing the room to heat up quickly. When the room temperature reaches the set temperature, the fan of indoor unit 2 is turned off, and heat is provided only through radiator 3 to prevent hot air from blowing on people for a long time and causing discomfort, thus improving heating comfort.

[0035] Existing air conditioning systems typically install temperature sensors in the indoor unit to detect temperature and control the heating temperature of the air conditioning system; however, temperature sensors are usually installed inside the casing of the indoor unit, which can lead to inaccuracies in the detection of the indoor ambient temperature.

[0036] This invention places the temperature sensor on the outside of the indoor unit 2, which can more accurately obtain the ambient temperature. Thus, the controller controls the outdoor unit 1 to operate according to the ambient temperature fed back by the temperature sensor, making the temperature control more accurate. If the temperature sensor is inside the casing of the indoor unit 2, in the heating mode, when the fan inside the indoor unit 2 is not turned on, its internal convection radiator will still dissipate heat. At this time, the temperature detected by the temperature sensor will be higher than the indoor ambient temperature. If the controller uses this temperature to control the operation of the outdoor unit 1, it will cause the actual indoor ambient temperature to be lower than the set temperature, reducing the comfort of heating.

[0037] In another embodiment, when the air conditioning system provides heat, the working fluid can first dissipate heat through the indoor unit 2 and then through the radiator 3.

[0038] Furthermore, the radiator 3 and the indoor unit 2 are separate units.

[0039] The radiator 3 can be installed separately from the indoor unit 2, which allows for a more reasonable arrangement of the unit in the room and further improves heating comfort. For example, during actual installation, the radiator 3 and the indoor unit 2 can be set up opposite each other, so that there are heat sources on both sides of the room, which can quickly raise the indoor temperature.

[0040] Furthermore, the radiator 3 and the indoor unit 2 are connected in series through the first pipe 7 and then connected to the outdoor unit 1. The radiator 3 is provided with a working fluid flow channel, which is connected to the outdoor unit 1 and the indoor unit 2 through the first pipe 7. When the split air conditioner provides heating, the high-temperature working fluid first passes through the radiator 3 to dissipate heat, and then passes through the indoor unit 2.

[0041] In heating mode, the outdoor unit 1 provides high-temperature working fluid to the radiator 3 through the first pipe 7. The working fluid flows in the working fluid channel inside the radiator 3, thereby transferring heat to the indoor unit through the radiator 3. Then, the high-temperature working fluid flows from the working fluid channel of the radiator 3 through the first pipe 7 to the convection radiator inside the indoor unit 2, where it transfers heat to the indoor unit through the convection radiator.

[0042] like Figure 1 As shown, it further includes: a second pipe 8, one end of which is connected to the first pipe 7 between the radiator 3 and the outdoor unit 1, and the other end of which is connected to the first pipe 7 between the first check valve 4 and the indoor unit 2, and the second pipe 8 is provided with a second check valve 5.

[0043] The second one-way valve 5 is equivalent to being connected in parallel with the first one-way valve 4 and the radiator 3. In heating mode, the second one-way valve 5 prevents the working fluid from flowing from the indoor unit 2 to the outdoor unit 1 through the second pipe 8. In cooling mode, the first one-way valve 4 allows the working fluid to be transported from the indoor unit 2 to the outdoor unit 1 through the second pipe 8 and the second one-way valve 5. The first one-way valve 4 prevents the working fluid from flowing to the radiator 3 through the first pipe 7.

[0044] In existing air conditioning systems, expansion valves (capillary tubes) or electric valves are installed to control the flow rate and direction of the working fluid. However, expansion valves (capillary tubes) cannot completely cut off the flow of the working fluid, while electric valves are complex to control and have low reliability. Therefore, the split-type air conditioning system described in this utility model uses a one-way valve, which has a simple structure and can completely cut off the flow of the working fluid. At the same time, it does not require electric control. The control of the one-way valve is simple and highly reliable. Furthermore, controlling the flow rate of the working fluid through an expansion valve (capillary tube) generates significant noise, while using a one-way valve to control the flow rate and direction of the working fluid can reduce noise and further improve the comfort during heating.

[0045] like Figure 1 As shown, it further includes a third pipe 9, whose two ends are connected to the outdoor unit 1 and the indoor unit 2, respectively.

[0046] In cooling mode, the working fluid is transported from outdoor unit 1 to indoor unit 2 through the third pipe 9; in heating mode, the working fluid is transported from indoor unit 2 to outdoor unit 1 through the third pipe 9.

[0047] like Figure 2 As shown, the outdoor unit 1, radiator 3 and indoor unit 2 are connected by a heating circuit through the first pipe 7 and the third pipe 9.

[0048] In heating mode, after the outdoor unit 1 is started, the gaseous working fluid delivered by the outdoor unit 1 first enters the radiator 3 through the first pipe 7, then passes through the first one-way valve 4, enters the indoor unit 2 through the first pipe 7, and then returns to the outdoor unit 1 through the third pipe 9, completing a working fluid cycle.

[0049] like Figure 3 As shown, the outdoor unit 1 and the indoor unit 2 are connected by a third pipe 9 and a second pipe 8 to form a cooling circuit.

[0050] In cooling mode, outdoor unit 1 starts up and delivers liquid refrigerant through the third pipe 9 into indoor unit 2. Then, it passes through the second one-way valve 5 on the second pipe 8 and returns to outdoor unit 1, completing one cycle of the refrigerant.

[0051] In cooling mode, the refrigerant only enters the indoor unit 2 for cooling and does not enter the radiator 3, thus avoiding the problem of condensation on the surface of the radiator 3.

[0052] like Figure 4 As shown, in one embodiment, it further includes: a fourth pipe 10, one end of which is connected to the first pipe 7 between the first one-way valve 4 and the indoor unit 2, and the other end of which is connected to the third pipe 9, wherein the fourth pipe 10 is provided with a third one-way valve 6.

[0053] Furthermore, a pressure-dividing circuit is formed between the outdoor unit 1 and the radiator 3 through the first pipe 7, the fourth pipe 10 and the third pipe 9.

[0054] Based on the aforementioned embodiments, a fourth pipe 10 and a third one-way valve 6 are provided so that, under heating conditions, a small amount of working fluid flows back to the outdoor unit 1 through the fourth pipe 10 and the third one-way valve 6, thereby sharing some of the pressure and reducing the pressure on the indoor unit 2, which is beneficial to the safe, stable and reliable operation of the indoor unit 2.

[0055] Specific examples Figure 5 As shown, under heating conditions, after the outdoor unit 1 is started, the gaseous working fluid delivered by the outdoor unit 1 first enters the radiator 3 through the first pipe 7, and then passes through the first one-way valve 4. Part of the working fluid enters the indoor unit 2 through the first pipe 7 and then returns to the outdoor unit 1 through the third pipe 9. The other part of the working fluid flows back to the outdoor unit 1 through the third one-way valve 6 on the fourth pipe 10, completing a working fluid cycle.

[0056] like Figure 6 As shown, under cooling conditions, the outdoor unit 1 delivers liquid refrigerant through the third pipe 9 into the indoor unit 2, and then through the second one-way valve 5 on the second pipe 8 back to the outdoor unit 1, completing a refrigerant cycle.

[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A split-type air conditioning system, characterized in that, include: The unit includes an outdoor unit (1), an indoor unit (2), and a radiator (3) located outside the indoor unit (2). The radiator (3) is connected to the outdoor unit (1) and the indoor unit (2) via a first pipe (7). The first pipe (7) is equipped with a first one-way valve (4).

2. The split-type air conditioning system according to claim 1, characterized in that, Also includes: A temperature sensor and a controller are provided, wherein the temperature sensor is located on the outside of the indoor unit (2), and the controller is electrically connected to the temperature sensor and the outdoor unit (1).

3. The split-type air conditioning system according to claim 1, characterized in that, The radiator (3) and the indoor unit (2) are set separately. The radiator (3) and the indoor unit (2) are connected in series through the first pipe (7) and then connected to the outdoor unit (1). The radiator (3) is provided with a working fluid channel. The working fluid channel is connected to the outdoor unit (1) and the indoor unit (2) through the first pipe (7).

4. The split-type air conditioning system according to claim 3, characterized in that, Also includes: The second pipe (8) has one end connected to the first pipe (7) between the radiator (3) and the outdoor unit (1), and the other end connected to the first pipe (7) between the first check valve (4) and the indoor unit (2). The second pipe (8) is equipped with a second check valve (5).

5. The split-type air conditioning system according to claim 1 or 4, characterized in that, Also includes: The third pipe (9) is connected at both ends to the outdoor unit (1) and the indoor unit (2).

6. The split-type air conditioning system according to claim 5, characterized in that, The outdoor unit (1), radiator (3) and indoor unit (2) form a heating circuit through the first pipe (7) and the third pipe (9).

7. The split-type air conditioning system according to claim 5, characterized in that, The outdoor unit (1) and the indoor unit (2) are connected by a cooling circuit through a third pipe (9) and a second pipe (8).

8. The split-type air conditioning system according to claim 5, characterized in that, Also includes: The fourth pipe (10) is connected at one end to the first pipe (7) between the first one-way valve (4) and the indoor unit (2), and at the other end to the third pipe (9). The fourth pipe (10) is equipped with a third one-way valve (6).

9. The split-type air conditioning system according to claim 8, characterized in that, The outdoor unit (1) and the radiator (3) form a pressure-dividing circuit through the first pipe (7), the fourth pipe (10) and the third pipe (9).

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