CN209944548U - Indoor machine of air conditioner - Google Patents

Abstract

The utility model discloses an air conditioner indoor unit, air conditioner indoor unit includes: the air conditioner comprises a shell, a heat exchanger, a ventilation component and a detection device, wherein an air duct is arranged in the shell; the heat exchanger is arranged in the shell and is used for exchanging heat with the airflow in the air duct; the ventilation component is arranged in the shell and is used for ventilating the air duct; the detection device is arranged at the heat exchanger and is used for detecting the refrigerant leakage. According to the utility model discloses an air conditioner is through setting up detection device in heat exchanger department, can in time detect the refrigerant and whether take place to leak to avoid because the refrigerant leaks the incident that takes place and cause.

Description

Indoor machine of air conditioner

Technical Field

The utility model belongs to the technical field of the air conditioning technique and specifically relates to an air conditioner indoor unit is related to.

Background

With the application and development of air conditioning technology, more and more refrigeration systems adopt a refrigerant R290, namely propane, which can be directly obtained from liquefied gas, however, propane has the danger of burning and explosion when meeting a heat source or open fire under a certain specific condition, so that an air conditioner applying the refrigerant has potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an air conditioner indoor unit through set up detection device in heat exchanger department, can in time detect the refrigerant and whether take place to leak to avoid because the refrigerant leaks the incident that causes.

According to the utility model discloses air conditioner indoor unit, include: a housing having an air duct therein; the heat exchanger is arranged in the shell and is used for exchanging heat with the airflow in the air duct; the ventilation component is arranged in the shell and is used for ventilating the air duct; and the detection device is arranged at the heat exchanger and is used for detecting the refrigerant leakage.

According to the utility model discloses air conditioner indoor unit through setting up detection device in heat exchanger department, can in time detect the refrigerant and whether take place to leak to avoid because the refrigerant leaks the incident that takes place and cause.

In some embodiments, the heat exchanger includes a refrigerant pipe, and the at least one detection device is disposed at an elbow section of the refrigerant pipe. Through setting up at least one detection device in return bend section department, because return bend section department has the hidden danger of leaking to make corresponding detection device can be as early as possible, promptly more discover the refrigerant leakage more fast, with the operation security that improves air conditioner indoor set.

In some embodiments, the heat exchanger includes a refrigerant pipe, and at least one of the detection devices is disposed at a weld of the refrigerant pipe. Through setting up at least one detection device in welding seam department, because there is the leakage hidden danger in welding seam department to make corresponding detection device can discover the refrigerant leakage as early as possible, promptly more fast, with the operation security that improves air conditioner indoor set.

In some embodiments, the heat exchanger comprises a fin on which at least one of the detection devices is mounted. The structure can be simplified, the cost is reduced, the installation efficiency is improved, the relative positions of the corresponding detection devices and the heat exchanger can be more reliable, the problems of dislocation, deviation and the like of the corresponding detection devices relative to the heat exchanger caused by vibration and the like in the transportation or use process are avoided as much as possible, and the working stability and the reliability of the corresponding detection devices are improved.

In some embodiments, at least one of the detection devices is disposed below the heat exchanger. At least one detection device is arranged below the heat exchanger, and the refrigerant density is high, so that the refrigerant leakage can be found more reliably by the corresponding detection device, and the operation safety of the indoor unit of the air conditioner is improved.

In some embodiments, the detection device comprises a first type of detection device mounted directly or indirectly to the heat exchanger and in contact with the heat exchanger.

In some embodiments, the detection device comprises a second type of detection device mounted directly or indirectly to the heat exchanger and spaced apart from the heat exchanger.

In some embodiments, the distance L between the detection device and the heat exchanger is less than or equal to 20 mm. Therefore, the detection device can detect the refrigerant leakage as early as possible, namely more quickly, so as to improve the operation safety of the indoor unit of the air conditioner.

In some embodiments, the detection device comprises at least one of a gas sensor and a temperature sensor. Therefore, the detection device is flexible in type selection and can meet various actual requirements.

In some embodiments, the ventilation component is located downstream of the heat exchanger, the detection device is located upstream of the ventilation component, and the detection device is located downstream of the heat exchanger. From this, through placing detection device between heat exchanger and ventilation unit to one can guarantee that the refrigerant that the heat exchanger leaked can flow through detection device, detect with detection device, two can improve the speed that detection device detected the refrigerant that the heat exchanger leaked, thereby make detection device can be as early as possible, promptly discover the refrigerant leakage more fast, in order to improve air conditioner indoor unit's operational safety nature.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic side cross-sectional view of an air conditioner indoor unit according to an embodiment of the present invention;

fig. 2 is an internal structure view of an indoor unit of an air conditioner according to another embodiment of the present invention;

fig. 3 is an internal structure view of an indoor unit of an air conditioner according to another embodiment of the present invention;

fig. 4 is an internal structure view of an indoor unit of an air conditioner according to another embodiment of the present invention;

fig. 5 is an internal structure view of an indoor unit of an air conditioner according to another embodiment of the present invention;

fig. 6 is a perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 7 is another perspective view of the indoor unit of the air conditioner shown in fig. 6;

fig. 8 is a control flow chart of an air conditioner indoor unit according to an embodiment of the present invention.

Reference numerals:

the air conditioner indoor unit 100:

a housing 1; an air duct 11; an air outlet 12; an air inlet 13;

a heat exchanger 2;

a refrigerant pipe 21; a pipe bending section 211; a weld 212; the fins 22;

a ventilation member 3;

a detection device 4; a first type of detection means 4 a; a second type detection device 4 b;

the first sensor 41; a second sensor 42; a third sensor 43; a fourth sensor 44;

a bracket member 5.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

Some air conditioners in the related art use flammable refrigerants (such as the refrigerant R29, i.e., propane), and when the refrigerant leakage of the air conditioner reaches a certain concentration, there is a risk of explosion, so these air conditioners in the related art usually have a refrigerant leakage detection device to prevent the risk, but the refrigerant leakage detection device in the related art detects the refrigerant leakage slowly, and finds that the effectiveness of the refrigerant leakage is not good. Therefore, the utility model provides an air conditioner indoor unit 100 that can comparatively in time detect the refrigerant and leak.

Next, an air conditioner indoor unit 100 according to an embodiment of the present invention will be described with reference to the drawings.

The indoor unit 100 of the air conditioner according to the present invention, as shown in fig. 1, may include: casing 1, heat exchanger 2, ventilation part 3 and detection device 4, have wind channel 11 in the casing 1, heat exchanger 2 establishes in casing 1 and is used for the air current heat transfer with in the wind channel 11, and ventilation part 3 establishes in casing 1 and is used for making wind channel 11 ventilate.

That is, the air duct 11, the heat exchanger 2, the ventilation component 3 and the detection device 4 are disposed inside the casing 1 of the air conditioner indoor unit 100, air flows into the air duct 11 inside the casing 1 from the outside of the casing 1 through the ventilation component 3, and the air flow in the air duct 11 is discharged to the outside of the casing 1, the heat exchanger 2 exchanges heat with the air flow in the air duct 11 to change the temperature of the air flow flowing through the air duct 11, and further the ambient temperature can be changed after the air flow flowing through the air duct 11 is discharged to the outside of the casing 1.

As shown in fig. 1, the detection device 4 is provided at the heat exchanger 2 and detects refrigerant leakage. Here, it should be noted that "the detection device 4 is provided at the heat exchanger 2" means: the detection means 4 is arranged close to the heat exchanger 2 or in contact with the heat exchanger 2 to ensure that the detection means 4 is located on or near the heat exchanger 2.

Particularly, the inventor discovers in actual life that the refrigerant flows through in the heat exchanger 2 of the air conditioner indoor unit 100 to there is the refrigerant of leaking near heat exchanger 2 easily, consequently, according to the utility model discloses an air conditioner indoor unit 100 is close to above-mentioned refrigerant leakage position through setting up near heat exchanger 2 with detection device 4, thereby can detect the refrigerant leakage comparatively in time and effectively, improves air conditioner indoor unit 100's operation security.

In some embodiments, as shown in fig. 2, the heat exchanger 2 may include a refrigerant pipe 21, and at least one detection device 4 (e.g., the first sensor 41 in fig. 2) is disposed at the bent pipe section 211 of the refrigerant pipe 21. Specifically, the inventor finds in actual life that the refrigerant pipe 21 of the heat exchanger 2 has the bent pipe section 211, and the bent pipe section 211 bends the straight pipe section into the bent pipe section through a bending process, so that the bent outer side wall surface of the bent pipe section 211 is thin, and even cracks may exist, so that a refrigerant leakage risk exists, that is, the bent pipe section 211 of the refrigerant pipe 21 is more prone to refrigerant leakage than the straight pipe section of the refrigerant pipe 21, so that at least one detection device 4 is arranged near the bent pipe section 211 to detect whether refrigerant leakage occurs at the bent pipe section 211 of the refrigerant pipe 21, and further the detection device 4 can find refrigerant leakage as early as possible, that is, more quickly, so as to improve the operation safety of the indoor unit of the air conditioner 100.

It is understood that the heat exchanger 2 may include a plurality of refrigerant pipes 21, for example, in the example shown in fig. 3 and 4, when the heat exchanger 2 is a fin-and-tube heat exchanger, the heat exchanger 2 includes fins 22 stacked and refrigerant pipes 21 penetrating the fins 22, a portion of the refrigerant pipe 21 penetrating the fins 22 is a straight pipe section of the refrigerant pipe 21, portions of the refrigerant pipe 21 at two ends in a stacking direction (a left-right direction shown in fig. 3 and 4) of the fins 22 are mostly bent pipe sections 211, as shown in fig. 3, the first sensor 41 may be disposed at the bent pipe section 211 on a left side of the fin 22, and as shown in fig. 4, the first sensor 41 may also be disposed at the bent pipe section 211 on a right side of the fin 22.

In some embodiments, as shown in fig. 2, the heat exchanger 2 may include a refrigerant pipe 21, and at least one detection device 4 (e.g., the second sensor 42 in fig. 2) is disposed at a weld 212 of the refrigerant pipe. Specifically, the inventor finds in real life that the refrigerant pipe 21 of the heat exchanger 2 is mostly welded during the installation process, in the process of welding the refrigerant pipe 21, internal defects such as slag inclusion and blowholes may be generated at the welding joint 212 due to the influence of welding environment, these internal defects may cause the refrigerant pipe 21 at the welding seam 212 to be damaged due to vibration or other external factors during transportation or operation, therefore, there is a refrigerant leakage risk, that is, the refrigerant leakage is more likely to occur at the welding seam 212 of the refrigerant pipe 21 than at other positions of the refrigerant pipe 21, so that by arranging at least one detection device 4 near the welding seam 212, at least whether the refrigerant leakage occurs at the welding seam 212 of the refrigerant pipe 21 is detected, further, the detection device 4 can detect the refrigerant leakage as early as possible, i.e., more quickly, so as to improve the operation safety of the air conditioner indoor unit 100.

It is understood that the heat exchanger 2 may include a plurality of refrigerant pipes 21, the refrigerant pipes 21 on the heat exchanger 2 are usually formed with welds 212 (for example, welds 212a shown in fig. 3) between adjacent straight pipe sections, and welds 212 (for example, welds 212b shown in fig. 3) are also usually formed between the refrigerant pipes 21 and other refrigerant pipes (for example, outdoor refrigerant connection pipes) other than the heat exchanger 2, and at least one detection device 4 may be disposed near at least one of the welds 212.

In addition, for example, in the example shown in fig. 3 and 4, when the heat exchanger 2 is a tube fin heat exchanger, the heat exchanger 2 may include a fin 22 and a refrigerant tube 21 inserted into the fin 22, a portion of the refrigerant tube 21 inserted into the fin 22 is a straight tube section of the refrigerant tube 21, portions of the refrigerant tube 21 located at both ends in the stacking direction (the left-right direction shown in fig. 3 and 4) of the fin 22 are mostly bent tube sections 211, the bent tube section 211 and the straight tube section on one side (the right side shown in fig. 3 and 4) in the stacking direction of the fin 22 are connected by welding to form a weld 212, the bent tube section 211 and the straight tube section on the other side (the left side shown in fig. 3 and 4) in the stacking direction of the fin 22 may be formed by bending one tube, and as shown in fig. 4, the second sensor 42 in the detection device 4 may be provided at the weld 212 on the right side of the fin 22.

In some embodiments, as shown in fig. 5, the heat exchanger 2 may include a fin 22, and at least one detection device 4 (e.g., a third sensor 43 in the figure) is mounted on the fin 22. Therefore, by installing at least one detection device 4, for example, the third sensor 43 on the fin 22, the heat exchanger 2 and the third sensor 43 can form an integral component, so that the structure can be simplified, the cost can be reduced, the installation efficiency can be improved, the relative position between the third sensor 43 and the heat exchanger 2 can be more reliable, the problems of dislocation, deviation and the like of the third sensor 43 relative to the heat exchanger 2 caused by vibration and the like in the transportation or use process can be avoided as much as possible, and the working stability and reliability of the third sensor 43 can be improved.

In some embodiments, as shown in fig. 5, at least one detection device 4 (e.g., the fourth sensor 44 in fig. 5) may be disposed below the heat exchanger 2, and specifically, in actual life, the inventor finds that, since the density of the refrigerant is greater than the density of air, the leaked refrigerant gradually diffuses downward under the action of its own gravity, so that the corresponding detection device 4 (e.g., the fourth sensor 44 in fig. 5) may more reliably detect the refrigerant leakage, so as to improve the operation safety of the air conditioner indoor unit 100.

If the refrigerant leaks from the heat exchanger 2, the leaked refrigerant gradually diffuses downward and gathers in a region close to the lower part of the inner space of the shell 1 because the density of the refrigerant is higher than that of air, so that the concentration of the refrigerant in the region is gradually increased, and safety accidents can be caused. Therefore, by disposing at least one detection device 4, for example, the fourth sensor 44 in fig. 5, below the heat exchanger 2, the fourth sensor 44 can be located at a refrigerant accumulation position, so that the fourth sensor 44 can detect the refrigerant leakage more reliably, thereby improving the operation safety of the indoor unit 100 of the air conditioner.

It should be noted that the type of the air conditioner indoor unit 100 is not limited, for example, the air conditioner indoor unit 100 may be a horizontal wall-mounted air conditioner, in this case, the heat exchanger 2 may extend in the horizontal direction, the fourth sensor 44 may be located on the lower side of the width of the fin 22 (for example, the fourth sensor 44 may be installed on the fin 22 of the heat exchanger 2 at this time), and for example, the air conditioner indoor unit 100 may also be a vertical cabinet air conditioner, in this case, the heat exchanger 2 may extend in the vertical direction, and the fourth sensor 44 may be located on the lower side of the length of the fin 22 (for example, the fourth sensor 44 may be installed on the refrigerant pipe. And will not be described in detail herein.

In some embodiments, as shown in fig. 1, the detection device 4 may include a first type detection device 4a, the first type detection device 4a is directly or indirectly installed on the heat exchanger 2 and is in contact with the heat exchanger 2, and the first type detection device 4a is directly or indirectly installed on the heat exchanger 2 and is in contact with the heat exchanger 2, so that the positioning difficulty may be reduced, the assembly efficiency may be improved, and the relative position between the first type detection device 4a and the heat exchanger 2 may be more reliable, thereby avoiding the problems of dislocation, deviation and the like of the first type detection device 4a relative to the heat exchanger 2 caused by vibration and the like in the transportation or use process as much as possible, and improving the detection stability and the detection reliability of the first type detection device 4 a. Any one of the first sensor 41, the second sensor 42, the third sensor 43, and the fourth sensor 44 may be the first type detection device 4 a.

In some embodiments, as shown in fig. 1 and 2, the detecting device 4 may include a second detecting device 4b, and the second detecting device 4b is directly or indirectly mounted on the heat exchanger 2 and spaced apart from the heat exchanger 2, so as to ensure the heat exchange efficiency of the heat exchanger 2, and make the relative position between the second detecting device 4b and the heat exchanger 2 more reliable, so as to avoid the problems of misalignment, deviation and the like of the second detecting device 4b relative to the heat exchanger 2 caused by vibration and the like during transportation or use as much as possible, and improve the detection stability and the detection reliability of the second detecting device 4 b. Any one of the first sensor 41, the second sensor 42, the third sensor 43, and the fourth sensor 44 may be the second type detection device 4 b.

Here, the phrase "the detection device 4 is attached to the heat exchanger 2" means that: the detection device 4 may be installed at any portion of the heat exchanger 2, such as the bent pipe 211, the weld 212, the fin 22, and the like. In addition, the connection mode of the detection device 4 and the heat exchanger 2 is not limited, for example, the detection device 4 and the heat exchanger 2 can be directly fixed, and for example, the detection device 4 and the heat exchanger 2 are respectively provided with structures such as connection lugs, so that direct connection is realized, the assembly efficiency can be improved, the number of parts is reduced, and for example, the detection device 4 can also be indirectly fixed, for example, the detection device 4 can be indirectly fixed on the heat exchanger 2 through a bracket component 5, so that the structural complexity of the detection device 4 and the heat exchanger 2 can be reduced, and the production cost.

In some embodiments, as shown in fig. 1, the distance L between each detection device 4 and the heat exchanger 2 is less than or equal to 20mm, for example L may be 5mm, 10mm, 15mm, 20mm, etc. Therefore, the detection device 4 can be closer to the heat exchanger 2, so that the detection device 4 can find the refrigerant leakage as soon as possible, namely, more quickly, and the operation safety of the air conditioner indoor unit 100 is improved. Of course, the present invention is not limited thereto, and in other embodiments of the present invention, the distance L between the detecting device 4 and the heat exchanger 2 may also be greater than or equal to 20mm, for example, may be 25mm, 30mm, 35mm, and so on.

In some embodiments, the detection device 4 may include at least one of a gas sensor and a temperature sensor. For example, each of the first sensor 41, the second sensor 42, the third sensor 43, and the fourth sensor 44 may be a gas sensor or a temperature sensor. Therefore, different actual requirements can be met. It is understood that the principle of detecting refrigerant leakage by using a gas sensor and the principle of detecting refrigerant leakage by using a temperature sensor are well known to those skilled in the art, and therefore, the detailed description thereof is omitted.

In some embodiments, as shown in fig. 1, the ventilation means 3 are located downstream of the heat exchanger 2, the detection device 4 is located upstream of the ventilation means 3, and the detection device 4 is located downstream of the heat exchanger 2. That is, the detection device 4 is disposed between the ventilation component 3 and the heat exchanger 2, so that the refrigerant in the air flow passing through the heat exchanger 2 can be detected, and the detection device 4 can detect the refrigerant leakage as early as possible, that is, more quickly, so as to improve the operation safety of the air conditioner indoor unit 100. It should be noted that the upstream and the downstream are determined according to the flow direction of the airflow, the direction of the position where the airflow passes first is the upstream, and the direction of the position where the airflow passes later is the downstream.

In addition, the indoor unit 100 of the air conditioner according to the embodiment of the present invention may also have other features, for example, in the examples shown in fig. 6 and fig. 7, the housing 1 may further have an air outlet 12 and an air inlet 13, the air outlet 12 may be located at the lower front portion of the housing 1, and the air inlet 13 may be located at the top portion of the housing 1, but is not limited thereto.

Next, a control method of the indoor unit 100 of the air conditioner according to an embodiment of the present invention will be described.

As shown in fig. 8, the control method according to the embodiment of the present invention may include the following steps: the refrigerant leakage is detected by the detection device 4 (i.e., the detection device 4 collects signals), and when the change rate of the signal value output by the detection device 4 (i.e., the change amount of the signal per unit time) is greater than a preset threshold (e.g., a leakage threshold or a danger threshold described later), it is determined that the refrigerant leaks, and at this time, a corresponding action may be performed to avoid danger. For example, when the concentration of the refrigerant detected by the detection device 4 in the indoor unit 100 of the air conditioner is greater than the leakage threshold, it is determined that the refrigerant leaks, and the indoor fan is turned on to accelerate the diffusion of the refrigerant (at this time, if the indoor unit 100 of the air conditioner is in the on-state operation state, the rotation speed of the indoor fan can be increased), so that forced air exhaust is realized; when the refrigerant concentration detected by the detection device 4 is greater than the dangerous threshold, the power supply of the indoor unit 100 of the air conditioner is cut off to avoid potential safety hazards caused by continuous power supply.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An indoor unit for an air conditioner, comprising:

a housing having an air duct therein;

the heat exchanger is arranged in the shell and is used for exchanging heat with the airflow in the air duct;

the ventilation component is arranged in the shell and is used for ventilating the air duct; and

and the detection device is arranged at the heat exchanger and is used for detecting the refrigerant leakage.

2. An indoor unit of an air conditioner according to claim 1, wherein the heat exchanger comprises a refrigerant pipe, and at least one of the detection devices is provided at a bent pipe section of the refrigerant pipe.

3. An indoor unit of an air conditioner according to claim 1, wherein the heat exchanger comprises a refrigerant pipe, and at least one of the detection devices is arranged at a welding seam of the refrigerant pipe.

4. An indoor unit for an air conditioner according to claim 1, wherein the heat exchanger includes fins, and at least one of the detecting means is mounted on the fins.

5. An indoor unit for an air conditioner according to claim 1, wherein at least one of the detecting means is provided below the heat exchanger.

6. An indoor unit according to any one of claims 1 to 5, wherein the detection means comprises a first type of detection means mounted directly or indirectly to the heat exchanger and in contact therewith.

7. An indoor unit according to any one of claims 1 to 5, wherein the detection means comprises a second type of detection means mounted directly or indirectly to the heat exchanger and spaced therefrom.

8. An indoor unit of an air conditioner according to claim 1, wherein the distance L between the detection device and the heat exchanger is less than or equal to 20 mm.

9. An indoor unit for an air conditioner according to claim 1, wherein the detecting means includes at least one of a gas sensor and a temperature sensor.

10. An indoor unit for an air conditioner according to claim 1, wherein the ventilation member is located downstream of the heat exchanger, the detection means is located upstream of the ventilation member, and the detection means is located downstream of the heat exchanger.

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