Air conditioning system

Abstract

The utility model discloses an air conditioning system which comprises an outdoor unit, an indoor unit and a first sensor, the indoor unit is communicated with the outdoor unit, and the first sensor is arranged in the indoor unit and used for detecting the refrigerant leakage condition of the indoor unit. And the discharging assembly is used for discharging the leaked refrigerant in the indoor unit to the outside when the first sensor detects that the refrigerant of the indoor unit leaks. The first sensor and the discharge assembly are arranged, so that the leakage of the refrigerant of the indoor unit can be timely treated, and safety accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning equipment, in particular to an air-conditioning system. Background Art

[0002] The new propane refrigerant (R290) is a natural hydrocarbon refrigerant that can be directly obtained from liquefied gas. It has excellent thermal performance and is low-priced. In addition, R290 is compatible with common lubricants and mechanical structural materials. Its ODP (ozone depletion potential) is 0 and its GWP is less than 5. It does not require synthesis, does not change the content of hydrocarbons in nature, and has no direct impact on the greenhouse effect.

[0003] However, due to its safety defects such as flammability, irritation and toxicity, if it leaks during use, safety accidents are likely to occur. Utility Model Content

[0004] The main purpose of the embodiment of the utility model is to provide an air-conditioning system, aiming to improve the technical problem of the lack of a treatment method for refrigerant leakage in the prior art.

[0005] An embodiment of the present invention provides an air conditioning system, comprising:

[0006] outdoor unit;

[0007] an indoor unit, connected to the outdoor unit;

[0008] a first sensor, disposed in the indoor unit, for detecting refrigerant leakage in the indoor unit;

[0009] The discharge component is used to discharge the leaked refrigerant in the indoor unit to the outside when the first sensor detects that the indoor unit has refrigerant leakage.

[0010] In some embodiments of the present invention, the discharge assembly includes a discharge pipe and a fan, wherein the fan is disposed in the discharge pipe and is used to discharge the refrigerant leaked from the indoor unit to the outside through the discharge pipe.

[0011] In some embodiments of the present invention, the indoor unit includes at least one indoor heat exchanger, and a first sensor is provided on the outside of each indoor heat exchanger.

[0012] In some embodiments of the present invention, a gas release device is provided in the outdoor unit, and the gas release device is used to discharge a preset gas when a leak occurs in the outdoor unit.

[0013] In some embodiments of the present invention, the outdoor unit includes a compressor, an outdoor heat exchanger, and a throttling element that are connected in sequence;

[0014] The air conditioning system further includes a third sensor, a fourth sensor, and a fifth sensor, wherein the third sensor is disposed outside the compressor, the fourth sensor is disposed outside the outdoor heat exchanger, and the fifth sensor is disposed outside the throttling element;

[0015] The gas release device is configured to release gas stored therein when any one of the third sensor, the fourth sensor, and the fifth sensor detects refrigerant leakage.

[0016] In some embodiments of the present invention, the outdoor unit includes at least one outdoor heat exchanger, and a fourth sensor is provided on the outside of each outdoor heat exchanger.

[0017] In some embodiments of the present invention, the gas release device includes a gas storage tank and an exhaust valve, and the exhaust valve is used to control the gas release rate of the gas storage tank.

[0018] In some embodiments of the present invention, the exhaust valve is used to adjust the opening degree of the exhaust valve according to the refrigerant concentration information detected by the third sensor, the fourth sensor, and the fifth sensor.

[0019] In some embodiments of the present invention, the air conditioning system is configured to gradually increase the opening degree of the exhaust valve as the refrigerant concentration value detected by the third sensor increases; and / or

[0020] The air conditioning system is configured such that as the refrigerant concentration value detected by the fourth sensor increases, the opening degree of the exhaust valve gradually increases; and / or

[0021] The air conditioning system is configured such that as the refrigerant concentration value detected by the fifth sensor increases, the opening degree of the exhaust valve gradually increases.

[0022] In some embodiments of the present invention, the outdoor unit further includes a four-way valve, the compressor exhaust port and the air inlet are both connected to the four-way valve, the outdoor heat exchanger is connected to the four-way valve, and the indoor heat exchanger is connected to the four-way valve;

[0023] The air conditioning system further includes a second sensor, and the gas release device is configured to release gas stored therein when the second sensor detects refrigerant leakage.

[0024] An embodiment of the present invention provides an air conditioning system equipped with a first sensor and a discharge assembly. The first sensor is configured to detect refrigerant leakage in an indoor unit. The discharge assembly is configured to discharge the leaked refrigerant from the indoor unit to the outside of the unit after the first sensor detects a leak. Specifically, by providing the first sensor and the discharge assembly, the present invention enables timely treatment of refrigerant leaks in the indoor unit, thereby preventing safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0026] Figure 1 This is a structural diagram of an air conditioning system according to an embodiment of the present invention;

[0027] Figure 2 This is a structural diagram of an air conditioning system according to another embodiment of the present invention.

[0028] Figure numerals: 11, first sensor; 12, second sensor; 13, third sensor; 14, fourth sensor; 30, exhaust assembly; 40, gas release device; 100, indoor unit; 110, indoor heat exchanger; 200, outdoor unit; 210, compressor; 220, outdoor heat exchanger; 230, throttling element; 240, four-way valve. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] like Figure 1-Figure 2 As shown, the present invention provides an air conditioning system, which includes an outdoor unit 200, an indoor unit 100, a first sensor 11, and a discharge assembly 30. The indoor unit 100 is connected to the outdoor unit 200. The first sensor 11 is disposed in the indoor unit 100 and is used to detect refrigerant leakage in the indoor unit 100. The discharge assembly 30 is used to discharge the leaked refrigerant in the indoor unit 100 to the outside when the first sensor 11 detects refrigerant leakage in the indoor unit 100.

[0034] Typically, the indoor unit 100 is installed indoors, and one panel of the indoor unit 100 includes an evaporator. The evaporator is connected to the outdoor unit 200 via a copper tube. Refrigerant enters the evaporator through the copper tube and then enters the outdoor unit 200 through another copper tube. Therefore, if a refrigerant leak occurs in the indoor unit 100, the refrigerant concentration in the indoor unit 100 will increase. Therefore, by detecting the refrigerant concentration in the indoor unit 100, it is possible to determine whether the indoor unit 100 has leaked.

[0035] Generally, the first sensor 11 is dedicated to detecting the refrigerant concentration. For example, when the refrigerant is R290, the first sensor 11 is an R290 concentration sensor.

[0036] It is understood that the first sensor 11 is used to detect whether there is a refrigerant leak in the indoor unit 100, and the discharge assembly 30 is used to discharge the leaked refrigerant in the indoor unit 100 to the outside after the first sensor 11 detects a leak in the indoor unit 100. In other words, by providing the first sensor 11 and the discharge assembly 30, the present invention can promptly handle the refrigerant leak in the indoor unit 100 and avoid safety accidents.

[0037] In some embodiments, when the first sensor 11 detects that the refrigerant concentration in the indoor unit 100 exceeds a preset value, a refrigerant leak may be determined. Generally, the first sensor 11 is connected to the air conditioning system's control center, which compares the real-time concentration measured by the first sensor 11 with a preset value. When the real-time concentration is greater than or equal to the preset value, a refrigerant leak is determined in the indoor unit 100, and the control center then controls the discharge assembly 30 to discharge the refrigerant. The control center is typically a device such as a control motherboard or computer with pre-stored control instructions.

[0038] In some embodiments, when the first sensor 11 detects that the refrigerant concentration change rate in the indoor unit 100 is greater than a preset rate, it is determined to be a refrigerant leak.

[0039] In some embodiments, the discharge assembly 30 includes a discharge pipe and a fan. The fan is disposed in the discharge pipe and is used to discharge the refrigerant leaked from the indoor unit 100 to the outside through the discharge pipe.

[0040] Specifically, one end of the discharge pipe is set in the indoor unit 100, and the other end of the discharge pipe extends to the outside. The fan is set in the discharge pipe. When the first sensor 11 detects that the refrigerant concentration in the indoor unit 100 exceeds a preset value, the fan is turned on to discharge the refrigerant.

[0041] Furthermore, the speed of the fan gradually increases as the refrigerant concentration detected by the first sensor 11 increases, so as to ensure the discharge effect of the refrigerant.

[0042] In some embodiments, the indoor unit 100 includes at least one indoor heat exchanger 110 , and a first sensor 11 is disposed on the outside of each indoor heat exchanger 110 .

[0043] It is understandable that when there are multiple indoor heat exchangers 110 in the indoor unit 100, refrigerant leakage may occur in each indoor heat exchanger 110. Therefore, in order to timely monitor the refrigerant leakage of the indoor unit 100, a first sensor 11 is set on the outside of each indoor heat exchanger 110 for targeted monitoring to improve the accuracy of monitoring the indoor unit 100.

[0044] In some embodiments, a gas release device 40 is provided in the outdoor unit 200 , and the gas release device 40 is used to discharge a preset gas when a leak occurs in the outdoor unit 200 .

[0045] It is understandable that by discharging a preset gas when a leak occurs in the outdoor unit 200, the refrigerant concentration is diluted to avoid harming the environment or causing other safety accidents.

[0046] Specifically, for example, when the refrigerant is R290, the preset gas may be carbon dioxide.

[0047] In some embodiments, the outdoor unit 200 includes a compressor 210, an outdoor heat exchanger 220, and a throttling element 230, which are connected in sequence. The air conditioning system further includes a third sensor 13, a fourth sensor 14, and a fifth sensor. The third sensor 13 is disposed outside the compressor 210, the fourth sensor 14 is disposed outside the outdoor heat exchanger 220, and the fifth sensor is disposed outside the throttling element 230. The gas release device 40 is configured to release internally stored gas when any of the third sensor 13, the fourth sensor 14, and the fifth sensor detects a refrigerant leak.

[0048] It is understandable that the compressor 210, the throttling element 230 and the outdoor heat exchanger 220 may leak, so the third sensor 13, the fourth sensor 14 and the fifth sensor are respectively set on the outside of the compressor 210, the outdoor heat exchanger 220 and the throttling element 230 for targeted monitoring, so that the refrigerant can be processed in time when any one of them leaks.

[0049] In some embodiments, the outdoor unit 200 includes at least one outdoor heat exchanger 220 , and a fourth sensor 14 is disposed on the outside of each outdoor heat exchanger 220 .

[0050] It is understandable that when there are multiple outdoor heat exchangers 220 in the outdoor unit 200, each outdoor heat exchanger 220 may have refrigerant leakage. Therefore, in order to timely monitor the refrigerant leakage of the outdoor unit 200, a fourth sensor 14 is set on the outside of each outdoor heat exchanger 220 for targeted monitoring to improve the accuracy of monitoring the outdoor unit 200.

[0051] In some embodiments, the gas release device 40 includes a gas storage tank and an exhaust valve, and the exhaust valve is used to control the gas release rate of the gas storage tank.

[0052] Specifically, the opening degree of the exhaust valve is positively correlated with the gas release rate of the gas storage tank, that is, the larger the opening degree of the exhaust valve, the greater the gas release rate of the gas storage tank, and the smaller the opening degree of the exhaust valve, the smaller the gas release rate of the gas storage tank.

[0053] Generally, the exhaust valve adopts an electronic valve, which is generally connected to the control center. The opening degree of the exhaust valve is controlled by the control center. The control center is also connected to the third sensor 13, the fourth sensor 14 and the fifth sensor. The opening degree of the exhaust valve can be adjusted according to the refrigerant concentration information detected by any one of the third sensor 13, the fourth sensor 14 or the fifth sensor, thereby controlling the gas release rate of the gas storage tank.

[0054] In some embodiments, the exhaust valve is used to adjust the opening degree of the exhaust valve according to the refrigerant concentration information detected by the third sensor 13, the fourth sensor 14 and the fifth sensor.

[0055] It should be noted that when any one of the third sensor 13, the fourth sensor 14, and the fifth sensor detects a refrigerant leak, the control center controls the exhaust valve to open. When none of the third sensor 13, the fourth sensor 14, and the fifth sensor detects a refrigerant leak, the exhaust valve may be closed or maintained closed.

[0056] In some embodiments, the exhaust valve is configured to adjust an opening of the exhaust valve according to refrigerant concentration information detected by the third sensor 13 .

[0057] For example, when the refrigerant concentration detected by the fourth sensor 14 and the fifth sensor is lower than the preset value or the concentration change rate is lower than the preset rate, the refrigerant concentration detected by the third sensor 13 is higher than the preset value or the concentration change rate is higher than the preset rate, that is, the compressor 210 leaks, and the exhaust valve opens according to the refrigerant concentration value detected by the third sensor 13.

[0058] In some embodiments, the exhaust valve is configured to adjust an opening of the exhaust valve according to refrigerant concentration information detected by the fourth sensor 14 .

[0059] For example, when the refrigerant concentrations detected by the third sensor 13 and the fifth sensor are both lower than the preset value or the concentration change rate is lower than the preset rate, the refrigerant concentration detected by the fourth sensor 14 is higher than the preset value or the concentration change rate is higher than the preset rate, that is, the outdoor heat exchanger 220 leaks, and the exhaust valve opens according to the refrigerant concentration value detected by the fourth sensor 14.

[0060] In some embodiments, the exhaust valve is configured to adjust an opening of the exhaust valve according to refrigerant concentration information detected by a fifth sensor.

[0061] When the refrigerant concentration detected by the third sensor 13 and the fourth sensor 14 is lower than the preset value or the concentration change rate is lower than the preset rate, the refrigerant concentration detected by the fifth sensor is higher than the preset value or the concentration change rate is higher than the preset rate, that is, the throttling element 230 leaks, and the exhaust valve opens according to the refrigerant concentration value detected by the fifth sensor.

[0062] It is understandable that when any one sensor detects refrigerant leakage, it is determined that the outdoor unit 200 has leaked. Only when the third sensor 13, the fourth sensor 14 and the fifth sensor do not detect refrigerant leakage, it can be determined that the outdoor unit 200 has not leaked.

[0063] In some embodiments, the air conditioning system is configured such that as the refrigerant concentration detected by the third sensor 13 increases, the opening degree of the exhaust valve gradually increases.

[0064] In some embodiments, the air conditioning system is configured such that as the refrigerant concentration detected by the fourth sensor 14 increases, the opening degree of the exhaust valve gradually increases.

[0065] In some embodiments, the air conditioning system is configured to gradually increase the opening degree of the exhaust valve as the refrigerant concentration value detected by the fifth sensor increases.

[0066] That is, when the control center receives an increase in the refrigerant concentration detected by any one of the third sensor 13, the fourth sensor 14 and the fifth sensor, it will determine that the degree of refrigerant leakage in the outdoor unit 200 has increased, and then control the opening of the exhaust valve to increase to increase the exhaust rate of the gas release device 40.

[0067] In some embodiments, the outdoor unit 200 further includes a four-way valve 240. The exhaust port and the air inlet of the compressor 210 are both in communication with the four-way valve 240. The outdoor heat exchanger 220 is in communication with the four-way valve 240. The indoor heat exchanger 110 is in communication with the four-way valve 240. The air conditioning system further includes a second sensor 12. The gas release device 40 is configured to release internally stored gas when the second sensor 12 detects a refrigerant leak.

[0068] It is understandable that sensors are provided at locations where refrigerant leakage may occur, so as to improve the timeliness and accuracy of refrigerant leakage detection of the air-conditioning system.

[0069] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the application concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An air conditioning system, characterized in that: include: outdoor unit; an indoor unit, connected to the outdoor unit; a first sensor, disposed in the indoor unit, for detecting refrigerant leakage in the indoor unit; The discharge component is used to discharge the leaked refrigerant in the indoor unit to the outside when the first sensor detects that the indoor unit has refrigerant leakage.

2. The air conditioning system according to claim 1, characterized in that The discharge assembly includes a discharge pipe and a fan. The fan is arranged in the discharge pipe and is used to discharge the refrigerant leaked from the indoor unit to the outside through the discharge pipe.

3. The air conditioning system according to claim 1, characterized in that The indoor unit includes at least one indoor heat exchanger, and a first sensor is provided on the outer side of each indoor heat exchanger.

4. The air conditioning system according to claim 3, characterized in that The outdoor unit is provided with a gas release device, which is used to discharge a preset gas when a leak occurs in the outdoor unit.

5. The air conditioning system according to claim 4, characterized in that The outdoor unit includes a compressor, an outdoor heat exchanger and a throttling element which are connected in sequence; The air conditioning system further includes a third sensor, a fourth sensor, and a fifth sensor, wherein the third sensor is disposed outside the compressor, the fourth sensor is disposed outside the outdoor heat exchanger, and the fifth sensor is disposed outside the throttling element; The gas release device is configured to release gas stored therein when any one of the third sensor, the fourth sensor, and the fifth sensor detects refrigerant leakage.

6. The air conditioning system according to claim 5, characterized in that The outdoor unit includes at least one outdoor heat exchanger, and a fourth sensor is provided on the outside of each outdoor heat exchanger.

7. The air conditioning system according to claim 5, characterized in that The gas release device includes a gas storage tank and an exhaust valve, and the exhaust valve is used to control the gas release speed of the gas storage tank.

8. The air conditioning system according to claim 7, characterized in that The exhaust valve is used to adjust the opening degree of the exhaust valve according to the refrigerant concentration information detected by the third sensor, the fourth sensor and the fifth sensor.

9. The air conditioning system according to claim 8, characterized in that The air conditioning system is configured such that as the refrigerant concentration value detected by the third sensor increases, the opening degree of the exhaust valve gradually increases; and / or The air conditioning system is configured such that as the refrigerant concentration value detected by the fourth sensor increases, the opening degree of the exhaust valve gradually increases; and / or The air conditioning system is configured such that as the refrigerant concentration value detected by the fifth sensor increases, the opening degree of the exhaust valve gradually increases.

10. The air conditioning system according to claim 5, characterized in that The outdoor unit further includes a four-way valve, the compressor exhaust port and air inlet are both connected to the four-way valve, the outdoor heat exchanger is connected to the four-way valve, and the indoor heat exchanger is connected to the four-way valve; The air conditioning system further includes a second sensor, and the gas release device is configured to release internally stored gas when the second sensor detects refrigerant leakage.

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