Embedded air conditioner indoor unit and air conditioning system

Abstract

The utility model discloses an embedded air conditioner indoor unit and an air conditioning system. The embedded air conditioner indoor unit comprises a centrifugal fan; the heat exchanger is arranged on the outer side of the centrifugal fan in a surrounding mode, and an open notch is formed between the two ends of the heat exchanger; and the air guide device is arranged at the open gap and is used for guiding the air flow blown to the open gap by the centrifugal fan to the direction of the heat exchanger. The air guide device is additionally arranged at the open notch of the heat exchanger where the turbulence phenomenon is prone to being generated. The air guide device can guide air flow blown to the open notch by the centrifugal fan to the direction of the heat exchanger. Under the action of the air guide device, airflow is guided into the heat exchanger for heat exchange and is finally blown out through the air outlet of the embedded air conditioner indoor unit, the turbulent flow phenomenon of the area where the open notch is located is eliminated, the airflow blown to the open notch is guided into the heat exchanger for heat exchange, the air supply efficiency and the heat exchange effect of the whole machine are improved, and turbulent flow noise is restrained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning systems, and more particularly to an embedded air conditioner indoor unit and an air conditioning system. BACKGROUND

[0002] An embedded air conditioner is a type of air conditioner in which the air outlet is embedded in the surface of a house. The air conditioner main unit or air outlet can be embedded in a suspended ceiling, cabinet or wall, without occupying additional space, thus saving space and greatly improving the aesthetics of the home. The embedded air conditioner performs well in terms of cooling and heating, and can quickly lower or raise the indoor temperature to meet daily use requirements. Its cooling effect is comparable to other types of air conditioners, but due to its hidden design, the indoor temperature distribution is more uniform and the comfort level is higher. Due to the above effects, the embedded air conditioner is increasingly favored by consumers.

[0003] As shown in Figure 1 An embedded air conditioner includes a centrifugal fan 201 and a heat exchanger 101 surrounding the centrifugal fan 201. The heat exchanger 101 does not intersect at both ends, i.e. the heat exchanger 101 is not a closed ring structure. The end of the heat exchanger 101 is fixed to the shell of the embedded air conditioner by a heat exchanger connecting plate 102.

[0004] The heat exchanger 101 is in a closed state (i.e. the end of the heat exchanger 101 is connected to the heat exchanger connecting plate 102). The embedded air conditioner uses a centrifugal fan 201 to send air, and the air blown by the centrifugal fan 201 will directly hit the heat exchanger connecting plate 102, forming a noticeable turbulent area, causing some air volume loss, affecting the air supply efficiency, and also producing unnecessary turbulent noise.

[0005] Therefore, how to reduce the turbulent noise at the heat exchanger connecting plate and improve the air supply efficiency is a problem that needs to be solved by those skilled in the art. UTILITY MODEL CONTENT

[0006] Therefore, the purpose of the present application is to provide an embedded air conditioner indoor unit to reduce the turbulent noise at the heat exchanger connecting plate and improve the air supply efficiency.

[0007] Another purpose of the present application is to provide an air conditioning system having the above-mentioned embedded air conditioner indoor unit.

[0008] To achieve the above-mentioned purposes, the present application provides the following technical solutions:

[0009] The first aspect of the present application provides an embedded air conditioner indoor unit, comprising:

[0010] a centrifugal fan;

[0011] A heat exchanger is arranged outside the centrifugal fan, and the heat exchanger has an open gap between two ends thereof;

[0012] A wind guide device is arranged at the open gap, and is configured to guide the air flow blown by the centrifugal fan to the heat exchanger.

[0013] In a possible implementation, the wind guide device comprises a first wind guide plate body and a second wind guide plate body;

[0014] The first wind guide plate body is configured to guide the air flow to the first end of the heat exchanger;

[0015] The second wind guide plate body is configured to guide the air flow to the second end of the heat exchanger.

[0016] In a possible implementation, the first wind guide plate body and the second wind guide plate body are connected, and a connection end of the first wind guide plate body and the second wind guide plate body is closer to the centrifugal fan than the other end.

[0017] In a possible implementation, the first wind guide plate body and the second wind guide plate body are connected through a circular arc transition, and an arc surface at the circular arc transition protrudes towards the centrifugal fan.

[0018] In a possible implementation, the first wind guide plate body and the second wind guide plate body are of an integrated structure;

[0019] and / or,

[0020] A plane on which the first wind guide plate body is located forms an obtuse angle with a plane on which the first end of the heat exchanger is located;

[0021] and / or,

[0022] A plane on which the second wind guide plate body is located forms an obtuse angle with a plane on which the second end of the heat exchanger is located;

[0023] and / or,

[0024] The first wind guide plate body and the second wind guide plate body are planar plate bodies;

[0025] and / or,

[0026] The first wind guide plate body and the second wind guide plate body have equal or unequal lengths.

[0027] In a possible implementation, one side of the wind guide device is fixed to the first end of the heat exchanger, and the other side is fixed to the second end of the heat exchanger.

[0028] In a possible implementation, the air guide device is provided with mounting lugs on both sides, and the mounting lugs are fixed to the heat exchanger by fasteners.

[0029] In a possible implementation, one side of the air guide device is fixed to the side plate edge of the first end of the heat exchanger, and the other side is fixed to the side plate edge of the second end of the heat exchanger.

[0030] In a possible implementation, the minimum distance between the air guide device and the centrifugal fan is greater than 12 mm.

[0031] and / or,

[0032] The air guide device can cover the height range of the heat exchanger.

[0033] The embedded air conditioner indoor unit provided in the present application increases an air guide device at the open gap of the heat exchanger where turbulence phenomenon is prone to occur. The air flow blown by the centrifugal fan to the open gap is guided to the direction of the heat exchanger by the air guide device. Under the action of the air guide device, the air flow is introduced into the heat exchanger for heat exchange, and finally blown out through the air outlet of the embedded air conditioner indoor unit. Not only is the turbulence phenomenon in the area where the open gap is located eliminated, but also the air flow blown to the open gap is introduced into the heat exchanger for heat exchange, which improves the air supply efficiency, the overall heat exchange effect of the machine, and suppresses the turbulence noise.

[0034] The second aspect of the present application provides an air conditioning system, comprising the embedded air conditioner indoor unit according to any one of the above.

[0035] The air conditioning system provided in the present application has all the technical effects of the above-mentioned embedded air conditioner indoor unit, and thus has all the technical effects of the above-mentioned embedded air conditioner indoor unit, which will not be described herein again. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort.

[0037] Figure 1 It is an internal structure diagram of the embedded air conditioner indoor unit in the prior art;

[0038] Figure 2 It is a structure schematic diagram of the embedded air conditioner indoor unit disclosed in the embodiments of the present application at the air guide device;

[0039] Figure 3 It is an internal structure diagram of the embedded air conditioner indoor unit disclosed in the embodiments of the present application;

[0040] Figure 4 Structure diagram of the air guide device disclosed in the embodiments of the present application.

[0041] Figure 5 Internal air flow guide diagram of the embedded air conditioner indoor unit disclosed in the embodiments of the present application.

[0042] The meanings of the various reference numerals in the drawings are as follows:

[0043] 101 - heat exchanger; 102 - heat exchanger connecting plate

[0044] 201 - centrifugal fan

[0045] 300 - air guide device; 301 - first air guide plate body; 302 - second air guide plate body; 303 - mounting ear plate DETAILED DESCRIPTION

[0046] The core of the present application is to provide an embedded air conditioner indoor unit to reduce the turbulent noise at the heat exchanger connecting plate and improve the air supply efficiency.

[0047] Another core of the present application is to provide an air conditioning system with the above-mentioned embedded air conditioner indoor unit.

[0048] Hereinafter, the embodiments will be described with reference to the accompanying drawings. In addition, the embodiments shown below do not have any limiting effect on the application content recited in the claims. In addition, the entire content of the configuration represented in the following embodiments is not limited to what is necessary as a solution to the application recited in the claims. It should be noted that only the parts related to the application are shown in the drawings for ease of description. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0049] At present, the end of the heat exchanger of the embedded air conditioner is connected with a heat exchanger connecting plate. The embedded air conditioner uses a centrifugal fan to supply air, and the air blown by the centrifugal fan will directly impact on the heat exchanger connecting plate, forming a significant turbulent area, causing part of the air volume loss, affecting the air supply efficiency, and also producing unnecessary turbulent noise.

[0050] Based on this, the embodiments of the present application disclose an embedded air conditioner indoor unit for reducing the turbulent noise at the heat exchanger connecting plate and improving the air supply efficiency. As shown in Figure 2 and Figure 3 The embedded air conditioner indoor unit disclosed in the embodiments of the present application includes a centrifugal fan 201, a heat exchanger 101 and an air guide device 300.

[0051] The heat exchanger 101 is arranged outside the centrifugal fan 201, and the shape of the heat exchanger 101 is limited by other components in the embedded air conditioner indoor unit, and is not limited to regular patterns. In order to avoid interference with other components, the shape can be appropriately avoided.

[0052] The two ends of the heat exchanger 101 are used for the introduction and discharge of the heat exchange medium, so the two ends of the heat exchanger 101 cannot be connected to be closed, and an open gap is formed between the two ends of the heat exchanger 101. When the airflow formed by the centrifugal fan 201 acts on the area where the open gap is located, it does not pass through the heat exchange process with the heat exchanger 101, but directly flows outward along the radial direction, and collides with other components (such as the heat exchanger connecting plate) to form turbulence.

[0053] As shown in Figure 5 In this embodiment, an air guide device 300 is arranged at the area where the open gap of the heat exchanger 101 is located, and the air guide device 300 is used to guide the airflow blown by the centrifugal fan 201 to the open gap to the direction of the heat exchanger 101. Those skilled in the art can understand that in order to be able to guide the airflow, the surface of the air guide device 300 facing the centrifugal fan 201 is designed to be as smooth as possible to reduce air resistance. In addition, in view of the direction it needs to guide, the air guide device 300 can be inclined in the corresponding direction to guide the airflow to the target position (for example, the target position is the heat exchange area of the heat exchanger 101) according to the inclination direction of the air guide device 300.

[0054] The area where the open gap is located can be provided with a heat exchanger connecting plate 102. When this area is provided with a heat exchanger connecting plate 102, the air guide device 300 should be arranged on the side of the heat exchanger connecting plate 102 close to the centrifugal fan 201, that is, the air guide device 300 is arranged between the heat exchanger connecting plate 102 and the centrifugal fan 201. Of course, the area where the open gap is located can also not be provided with a heat exchanger connecting plate 102, that is, the heat exchanger connecting plate 102 is arranged away from the open gap. The shape of the heat exchanger connecting plate 102 can also be improved. A heat exchanger connecting plate 102 that can only provide a fixed support function is processed to become an air guide device 300 that can guide the airflow to the heat exchanger 101.

[0055] The embedded air conditioner indoor unit disclosed in this application adds an air guide device 300 at the open opening of the heat exchanger 101, where turbulence is prone to occur. The air guide device 300 directs the airflow blown by the centrifugal fan 201 to the heat exchanger 101. Under the action of the air guide device 300, the airflow is guided into the heat exchanger 101 for heat exchange and is finally blown out through the air outlet of the embedded air conditioner indoor unit. This not only eliminates turbulence in the area where the open opening is located but also guides the airflow blown towards the open opening into the heat exchanger 101 for heat exchange, improving air delivery efficiency, overall heat exchange effect, and suppressing turbulence noise.

[0056] like Figure 4 As shown in a specific embodiment of this application, the air guiding device 300 may include a first air guiding plate 301 and a second air guiding plate 302. The first air guiding plate 301 is used to guide the airflow to the first end of the heat exchanger 101; the second air guiding plate 302 is used to guide the airflow to the second end of the heat exchanger 101.

[0057] In this embodiment, based on the different air guiding directions, different areas of the air guiding device 300 are defined as the first air guiding plate 301 and the second air guiding plate 302, respectively. Since the first air guiding plate 301 and the second air guiding plate 302 guide the airflow in different directions, their tilting directions are also different. The specific tilting direction and tilting angle can be designed by those skilled in the art according to the actual scenario.

[0058] The first air guide plate 301 and the second air guide plate 302 can be planar plates. It should be noted that they can also be curved plates. When the first air guide plate 301 and the second air guide plate 302 are curved plates, they can protrude into the area enclosed by the heat exchanger 101 or protrude outwards from the area enclosed by the heat exchanger 101. It should be noted that the curvature of the first air guide plate 301 and the second air guide plate 302 should be designed to be relatively gentle to prevent swirling flow caused by the curvature.

[0059] The lengths of the first air guide plate 301 and the second air guide plate 302 can be designed to be equal or unequal. The first air guide plate 301 and the second air guide plate 302 are plate structures with two dimensions (thickness is negligible): length and height. The height dimension is the vertical dimension after the embedded air conditioner indoor unit is installed to the ceiling, that is, the height dimension is parallel to the axial direction of the centrifugal fan 201; the length dimension is the other dimension besides the height dimension.

[0060] In an embodiment of the present application, the first air deflector 301 and the second air deflector 302 are connected, and the connection end of the first air deflector 301 and the second air deflector 302 is closer to the centrifugal fan 201 than the other end. For ease of understanding, it is defined that the first end of the first air deflector 301 and the first end of the second air deflector 302 are connected, and then the first end of the first air deflector 301 is closer to the centrifugal fan 201 than the second end thereof; similarly, the first end of the second air deflector 302 is closer to the centrifugal fan 201 than the second end thereof. In this way, the air flow generated by the centrifugal fan 201 first acts on the first end of the first air deflector 301 and the second air deflector 302, and then flows along the plate surface of the first air deflector 301 and the second air deflector 302 from the first end to the second end, until it acts on the corresponding end of the heat exchanger 101.

[0061] The connection end of the first air deflector 301 and the second air deflector 302 is the part closest to the centrifugal fan 201. In order to ensure that the air flow of the centrifugal fan 201 acts on the connection end of the first air deflector 301 and the second air deflector 302, a smaller air resistance is generated. In this embodiment, the first air deflector 301 and the second air deflector 302 are connected through a circular arc transition. In this embodiment, by making a circular arc transition at the connection of the first air deflector 301 and the second air deflector 302, the connection part of the two can have a relatively gentle surface, and then when the air flow hits the connection part of the first air deflector 301 and the second air deflector 302, it can be smoothly diverted to both sides by the arc surface of the circular arc transition part, and the air resistance is smaller, thereby generating less noise.

[0062] It should be noted that in this embodiment, the arc surface of the circular arc transition part protrudes in the direction of the centrifugal fan 201. That is, the convex surface of the circular arc transition part points to the centrifugal fan 201, and the concave surface faces away from the centrifugal fan 201. The convex surface faces the centrifugal fan 201, which is more conducive to guiding the air flow to flow to both sides without swirling. The diameter of the arc surface of the circular arc transition part can be designed to be 8mm-12mm, for example, 10mm. This embodiment does not limit the diameter of the arc surface of the circular arc transition part, and those skilled in the art can design the diameter of the arc surface according to the needs.

[0063] In an embodiment of the present application, the first air deflector 301 and the second air deflector 302 can be an integral structure. For example, a flat plate body can be bent to form the first air deflector 301 and the second air deflector 302.

[0064] The plane containing the first air guide plate 301 forms an obtuse angle with the plane containing the first end of the heat exchanger 101; the plane containing the second air guide plate 302 forms an obtuse angle with the plane containing the second end of the heat exchanger 101. In this embodiment, the plates of the first air guide plate 301 and the second air guide plate 302 are designed to form an obtuse angle with respect to the plane containing the portion of the heat exchanger 101 to which they are connected. This allows the airflow guided by the first air guide plate 301 and the second air guide plate 302 to flow towards the heat exchanger 101 at a larger angle, thus achieving lower wind resistance, improving air outlet efficiency, and further reducing wind noise.

[0065] In one specific embodiment of this application, one side of the air guide device 300 can be fixed to the first end of the heat exchanger 101, and the other side can be fixed to the second end of the heat exchanger 101. In this embodiment, the air guide device 300 is directly fixed to the heat exchanger 101. Of course, it can also be fixed to other equipment, as long as it can guide the airflow to the heat exchanger 101.

[0066] Specifically, such as Figure 4 As shown, mounting ears 303 are provided on both sides of the air guide device 300. That is, a number of mounting ears 303 are provided on the side of the first air guide plate 301 away from the second air guide plate 302, and a number of mounting ears 303 are also provided on the side of the second air guide plate 302 away from the first air guide plate 301.

[0067] Mounting lugs 303 are fixed to the heat exchanger 101 by fasteners. For example, evaporator side plates are provided on the end faces of both the first and second ends of the heat exchanger 101, and the evaporator side plates can be connected to the mounting lugs 303. Fastening holes are made on the evaporator side plates of the heat exchanger 101, and the fastening holes on the corresponding mounting lugs 303 are aligned with the fastening holes on the evaporator side plates, and then fasteners are inserted for fixation.

[0068] In this embodiment, one side of the air guide device 300 is fixed to the edge of the side plate at the first end of the heat exchanger 101, and the other side is fixed to the edge of the side plate at the second end of the heat exchanger 101. That is, after the air guide device 300 is fixed to the heat exchanger 101 by the mounting lug 303, one side of the air guide device 300 exactly abuts against the edge of the side plate at the first end of the heat exchanger 101, and the other side exactly abuts against the edge of the side plate at the second end of the heat exchanger 101, so that the edges of the first air guide plate 301 and the second air guide plate 302 are flush with the edge of the evaporator side plate, preventing airflow from flowing out through the gap between them.

[0069] In an embodiment of the present application, the minimum distance between the air guide device 300 and the centrifugal fan 201 can be designed to be greater than 12 mm. Generally, the position of the air guide device 300 closest to the centrifugal fan 201 is the joint of the first air guide plate body 301 and the second air guide plate body 302, i.e., the distance between the joint of the first air guide plate body 301 and the second air guide plate body 302 and the centrifugal fan 201 is greater than 12 mm. The distance between the air guide device 300 and the centrifugal fan 201 should not be too close, otherwise air flow noise is likely to be generated. It has been verified through tests that when the distance between the joint of the first air guide plate body 301 and the second air guide plate body 302 and the centrifugal fan 201 is designed to be greater than 12 mm, no air flow noise is generated.

[0070] The air guide device 300 can cover the height range of the heat exchanger 101, for example, the overall height of the air guide device 300 is flush with the heat exchanger 101. That is, after the embedded air conditioner indoor unit is installed to the indoor top, the upper surface of the air guide device 300 is flush with the upper surface of the heat exchanger 101, and the lower surface of the air guide device 300 is flush with the lower surface of the heat exchanger 101. It should be noted that the upper surface of the air guide device 300 can also be higher than the upper surface of the heat exchanger 101, and the lower surface of the air guide device 300 can also be lower than the lower surface of the heat exchanger 101.

[0071] The present application also discloses an air conditioning system comprising the embedded air conditioner indoor unit as disclosed in the above embodiments. Since the embedded air conditioner indoor unit has all the technical effects of the embedded air conditioner indoor unit, the present application will not be described here.

[0072] As shown in the present application and claims, unless the context clearly indicates otherwise, the words "one", "an", "a", and / or "the" do not mean a single number but can also include a plurality. Generally, the terms "comprising" and "including" only indicate the inclusion of the steps and elements explicitly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements. The element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, product or device comprising the element.

[0073] In the description of the present application, unless otherwise explicitly limited, the words setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0074] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0075] The principles and implementations of the present application are described in detail with specific examples in this paper, and the above examples are only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. An embedded air conditioner indoor unit, characterized by, The air conditioner comprises: a centrifugal fan (201); a heat exchanger (101) arranged outside the centrifugal fan (201) and having an open gap between two ends of the heat exchanger (101); a wind guide device (300) arranged at the open gap and used for guiding the airflow blown by the centrifugal fan (201) to the direction of the heat exchanger (101).

2. The embedded air conditioner indoor unit as claimed in claim 1, wherein, The wind guide device (300) comprises a first wind guide plate body (301) and a second wind guide plate body (302); the first wind guide plate body (301) is used for guiding the airflow to the first end of the heat exchanger (101); the second wind guide plate body (302) is used for guiding the airflow to the second end of the heat exchanger (101).

3. The embedded air conditioner indoor unit as claimed in claim 2, wherein, The first wind guide plate body (301) and the second wind guide plate body (302) are connected, and the connecting end of the first wind guide plate body (301) and the second wind guide plate body (302) is closer to the centrifugal fan (201) than the other end.

4. The embedded air conditioner indoor unit as claimed in claim 3, wherein The first wind guide plate body (301) and the second wind guide plate body (302) are connected through a circular arc transition, and the arc surface at the circular arc transition protrudes in the direction of the centrifugal fan (201).

5. The embedded air conditioner indoor unit according to any one of claims 2 to 4, wherein The first wind guide plate body (301) and the second wind guide plate body (302) are of an integrated structure. And / or, the plane where the first wind guide plate body (301) is located forms an obtuse angle with the plane where the first end of the heat exchanger (101) is located; And / or, the plane where the second wind guide plate body (302) is located forms an obtuse angle with the plane where the second end of the heat exchanger (101) is located; And / or, the first wind guide plate body (301) and the second wind guide plate body (302) are planar plate bodies; And / or, the length of the first wind guide plate body (301) and the second wind guide plate body (302) is equal or unequal.

6. The embedded air conditioner indoor unit according to any one of claims 1 to 4, wherein One side of the wind guide device (300) is fixed to the first end of the heat exchanger (101), and the other side is fixed to the second end of the heat exchanger (101).

7. The embedded air conditioner indoor unit as claimed in claim 6, wherein Both sides of the wind guide device (300) are provided with mounting lugs (303), and the mounting lugs (303) are fixed to the heat exchanger (101) through fasteners.

8. The embedded air conditioner indoor unit as claimed in claim 6, wherein, One side of the wind guide device (300) is fixed to the side plate edge of the first end of the heat exchanger (101), and the other side is fixed to the side plate edge of the second end of the heat exchanger (101).

9. The embedded air conditioner indoor unit according to any one of claims 1-4, wherein, The minimum distance between the wind guide device (300) and the centrifugal fan (201) is greater than 12 mm; And / or, the wind guide device (300) can cover the height range of the heat exchanger (101).

10. An air conditioning system characterized by, The air conditioner comprises: a centrifugal fan (201); a heat exchanger (101) arranged outside the centrifugal fan (201) and having an open gap between two ends of the heat exchanger (101); a wind guide device (300) arranged at the open gap and used for guiding the airflow blown by the centrifugal fan (201) to the direction of the heat exchanger (101). The wind guide device (300) comprises a first wind guide plate body (301) and a second wind guide plate body (302); the first wind guide plate body (301) is used for guiding the airflow to the first end of the heat exchanger (101); the second wind guide plate body (302) is used for guiding the airflow to the second end of the heat exchanger (101). The first wind guide plate body (301) and the second wind guide plate body (302) are connected, and the connecting end of the first wind guide plate body (301) and the second wind guide plate body (302) is closer to the centrifugal fan (201) than the other end. The first wind guide plate body (301) and the second wind guide plate body (302) are connected through a circular arc transition, and the arc surface at the circular arc transition protrudes in the direction of the centrifugal fan (201). The first wind guide plate body (301) and the second wind guide plate body (302) are of an integrated structure. And / or, the plane where the first wind guide plate body (301) is located forms an obtuse angle with the plane where the first end of the heat exchanger (101) is located; And / or, the plane where the second wind guide plate body (302) is located forms an obtuse angle with the plane where the second end of the heat exchanger (101) is located; And / or, the first wind guide plate body (301) and the second wind guide plate body (302) are planar plate bodies; And / or, the length of the first wind guide plate body (301) and the second wind guide plate body (302) is equal or unequal.

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