A fresh air air conditioner

Abstract

The present invention relates to a fresh air air conditioner, comprising a fresh air device and a heat exchange device, wherein the heat exchange device is provided with an air conditioning outlet corresponding thereto, the fresh air device comprises a volute, the cavity in the volute forms a fresh air duct, the fresh air duct is provided with a first air outlet and a second air outlet, the first air outlet is close to the air conditioning outlet, and the first air outlet is located below the air conditioning outlet, and the second air outlet is located below the first air outlet. Therefore, on the one hand, the present invention adopts a method of arranging the fresh air first air outlet near the bottom of the air conditioning outlet so that the air from the fresh air first air outlet is fully mixed with the air from the air conditioning outlet after heat exchange by the heat exchange device, and temperature compensation is performed on the air from the fresh air outlet, especially in summer, when the air conditioner is in cooling mode, the temperature of the air from the fresh air first air outlet is reduced, thereby improving the comfort of the indoor environment; on the other hand, a second air outlet is further provided below the first air outlet, retaining the conventional fresh air outlet method.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a fresh air air conditioner. Background Art

[0002] With the improvement of people's living standards and the development of air-conditioning technology, air-conditioning is widely used in people's daily life. Air-conditioning generally has heating or cooling mode to make the indoor temperature suitable and improve the comfort of users.

[0003] However, current air conditioners circulate indoor air to heat or cool it during heating or cooling. To maintain the indoor temperature, users often keep doors and windows closed, resulting in increasingly poor indoor air quality, lower oxygen levels, and increasing concentrations of particulate matter. This can easily lead to dizziness and other symptoms, impacting user health. Existing fresh air air conditioners also have the following shortcomings: the fresh air outlet has a small coverage area, low indoor fresh air exchange efficiency, and because the fresh air is blown directly out of the outlet, there is a temperature difference between the fresh air and the indoor air, causing discomfort to the user. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a fresh air air conditioner, including a fresh air device and a heat exchange device, the heat exchange device is correspondingly provided with an air conditioning outlet, the fresh air device includes a volute, the cavity in the volute forms a fresh air duct, the fresh air duct is provided with a first air outlet and a second air outlet, the first air outlet is close to the air conditioning outlet, and the first air outlet is located below the air conditioning outlet, and the second air outlet is located below the first air outlet.

[0005] On the one hand, the present invention arranges a first fresh air outlet below the air-conditioning outlet, so that the air from the first fresh air outlet is fully mixed with the air from the air-conditioning outlet after heat exchange by a heat exchange device, and temperature compensation is performed on the air from the fresh air outlet. Especially in summer, when the air-conditioning is in cooling mode, the temperature of the air from the first fresh air outlet is reduced, thereby improving the comfort of the indoor environment. On the other hand, a second air outlet is also arranged below the first air outlet, retaining the conventional fresh air outlet method.

[0006] Furthermore, the distance between the upper edge of the first air outlet and the lower edge of the air-conditioning outlet is between 15 mm and 30 mm.

[0007] The present invention limits the distance between the first air outlet and the air-conditioning outlet. On the one hand, it ensures that the wind from the first air outlet is fully mixed with the wind from the air-conditioning outlet through the heat exchange device, thereby improving the comfort of the indoor environment. On the other hand, it reduces the deformation of the air-conditioning shell where the air outlet is located and ensures the strength of the air-conditioning shell.

[0008] Furthermore, a damper component is provided on the fresh air duct, and the damper component is used to open the first air outlet and close the second air outlet at the same time, or open the second air outlet and close the first air outlet at the same time.

[0009] The present invention provides a first air outlet and a second air outlet which are optional, so that the indoor air passing through the fresh air device is blown out through the first air outlet or the second air outlet, thereby ensuring the quality of the indoor air, adapting to the needs of the user, improving the user's comfort, and being beneficial to the user's health.

[0010] Furthermore, the damper component includes a damper plate, a rotating shaft and a driving device, the driving device is connected to the rotating shaft, the rotating shaft is connected to the damper plate, and the driving device drives the damper plate to rotate around the rotating shaft.

[0011] Furthermore, the fresh air duct is provided with a limiting portion, the lower surface of the limiting portion abuts against the upper surface of the damper plate, and is used to limit the maximum rotation angle of the damper plate to close the first air outlet.

[0012] The present invention provides a limiting portion in the air outlet duct to physically limit the maximum rotation angle of the damper plate, so that fresh air is discharged from the second air outlet. The invention has the characteristics of simple structure and low cost.

[0013] Furthermore, the maximum rotation angle α of the damper plate is 75°.

[0014] Furthermore, the volute includes an air guide component, the number of the first air outlets is two, and the first air outlets are arranged on the air guide component; the air guide component is located above the volute, and the cavity of the air guide component is connected to the cavity of the volute.

[0015] Furthermore, the air guide component is detachably connected to the volute.

[0016] On the one hand, the present invention provides an air guide component that is detachably connected to the volute, which has a simple structure, is easy to manufacture, has low cost, and is convenient for installation and disassembly; on the other hand, two first air outlets are provided on the air guide component to increase the amount of fresh air outflow, so that fresh air can be blown out from both sides, thereby improving the efficiency of indoor air purification. In addition, the position of the first air outlet corresponds to the air outlet of the air conditioner, so that the fresh air from the first air outlet is fully mixed with the air from the air conditioner outlet that passes through the heat exchange device, thereby reducing the temperature difference between the air at the first air outlet and the air conditioner outlet, thereby improving the comfort of the indoor environment.

[0017] Furthermore, the inner wall surface of the cavity of the air guide component is arranged to be inclined upward, and the inclination angle β of the inner wall surface relative to the horizontal plane is between 30° and 50°.

[0018] The present invention achieves the function of guiding fresh air by tilting the inner wall of the cavity of the air guide component upward, changing the direction of fresh air outlet, thereby further ensuring that the fresh air blown out from the first air outlet is fully mixed with the air from the air-conditioning outlet, reducing the temperature difference of the outlet air, enhancing the uniformity of the outlet air temperature, and thus improving the comfort of the indoor environment.

[0019] Furthermore, the two first air outlets are arranged at a certain angle, and the angle Υ between the center lines of the two first air outlets (122) is between 45° and 65°.

[0020] The present invention arranges two air guide components at a certain angle so that the two first air outlets are arranged at a certain angle, thereby increasing the coverage area of the air outlet of the first air outlet and improving the purification efficiency of indoor air.

[0021] Furthermore, the fresh air air conditioner includes a decorative panel, and a third air outlet is provided at the position of the fresh air air conditioner corresponding to the second air outlet. The third air outlet is arranged horizontally, and the angle θ between the third air outlet and the air guide surface of the decorative panel is between 60° and 90°.

[0022] The present invention arranges the third air outlet on the air conditioner corresponding to the second air outlet horizontally and at a certain angle to the air conditioner decorative panel, so that the fresh air blown out from the second air outlet is blown downward, preventing it from blowing directly on the user and making the user uncomfortable.

[0023] Furthermore, the fresh air air conditioner also includes a sliding door and a sliding door driving assembly, the sliding door driving assembly drives the sliding door to move, and the sliding door is used to simultaneously open or close the air conditioning outlet and the first outlet.

[0024] The present invention provides a sliding door. On the one hand, the rotation of the sliding door can open or close the air outlet of the air conditioner and the first air outlet of fresh air; on the other hand, when the air conditioner is not working, the air outlet is closed to prevent dust from forming in the air duct; in addition, the appearance of the air conditioner is enhanced.

[0025] Furthermore, the sliding door drive assembly includes a motor, a gear and a rack, the motor is connected to the gear, the rack is connected to the sliding door, and the gear and the rack are engaged to drive the sliding door to rotate.

[0026] Furthermore, the sliding door drive assembly also includes an upper shell and a lower shell, the upper shell is connected to the lower shell, the gear and the rack are located between the upper shell and the lower shell, and the motor shaft of the motor passes through the hole of the lower shell and is connected to the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an exploded schematic diagram of the overall structure of the fresh air air conditioner of the present invention;

[0028] Figure 2 A partially exploded schematic diagram of the overall structure of the fresh air air conditioner of the present invention;

[0029] Figure 3 This is a structural schematic diagram of the fresh air air conditioner of the present invention in which the air outlet is arranged in the first direction;

[0030] Figure 4 This is a schematic front view of a fresh air device in a fresh air air conditioner of the present invention;

[0031] Figure 5 It is a left side schematic diagram of the fresh air device in the fresh air air conditioner of the present invention;

[0032] Figure 6 This is an exploded diagram of the fresh air device in the fresh air air conditioner of the present invention;

[0033] Figure 7 For the present invention Figure 5 The left side partial schematic diagram of the fresh air device in the fresh air air conditioner shown;

[0034] Figure 8 It is a partial cross-sectional schematic diagram of the air guide component in the fresh air air conditioner of the present invention;

[0035] Figure 9 It is a rear view schematic diagram of the fresh air device in the fresh air air conditioner of the present invention;

[0036] Figure 10 This is a schematic diagram of the assembly structure of the fresh air air conditioner of the present invention when the sliding door is closed;

[0037] Figure 11 It is a cross-sectional schematic diagram of the fresh air air conditioner of the present invention;

[0038] Figure 12 This is a structural schematic diagram of the fresh air air conditioner of the present invention in which the air outlet is arranged in the second direction;

[0039] Figure 13 This is a structural schematic diagram of the fresh air air conditioner of the present invention in which the air outlet is arranged in the third direction;

[0040] Figure 14 This is an exploded schematic diagram of the sliding door driving component in the fresh air air conditioner of the present invention;

[0041] Figure 15 This is a schematic diagram of the assembly of the sliding door drive component in the fresh air air conditioner of the present invention;

[0042] Description of reference numerals:

[0043] 100-Fresh air air conditioner; 110-Fresh air device; 120-Voltage; 121-Fresh air duct; 122-First air outlet; 123-Second air outlet; 124-Limiting part; 125-Centrifugal fan; 130-Damper component; 131-Damper plate; 132-Rotating shaft; 133-Drive device; 140-Air guide component; 101-Air conditioner outlet; 102-Third air outlet; 103-Decorative panel; 104-Sliding door; 150-Sliding door drive component; 151-Motor; 152-Gear; 153-Rack; 154-Upper shell; 155-Lower shell. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following Figure 1-15 The specific embodiments of the present invention are described in detail.

[0045] See attached Figure 1 To the attached Figure 5 The present invention provides a fresh air air conditioner 100, including a fresh air device 110 and a heat exchange device (not shown in the figure), the heat exchange device is corresponding to the air conditioning outlet 101, the fresh air device 110 includes a volute 120, the cavity in the volute 120 forms a fresh air duct 121, the fresh air duct 121 is provided with a first air outlet 122 and a second air outlet 123, the first air outlet 122 is close to the air conditioning outlet 101, and the first air outlet 122 is located below the air conditioning outlet 101, and the second air outlet 123 is located below the first air outlet 122.

[0046] In a specific embodiment, the fresh air air conditioner 100 is a cabinet-type fresh air air conditioner, including two air-conditioning outlets 101 . Preferably, the first air outlet 122 is located directly below the two air-conditioning outlets 101 .

[0047] Therefore, on the one hand, the present invention sets a first fresh air outlet 122 near the bottom of the air-conditioning outlet 101, so that the air from the first fresh air outlet 122 is fully mixed with the air from the air-conditioning outlet 101 after heat exchange through the heat exchange device, and the temperature of the wind at the fresh air outlet is compensated. Especially in summer, when the air conditioner is in cooling mode, the temperature of the wind at the first fresh air outlet is reduced, thereby improving the comfort of the indoor environment; on the other hand, a second air outlet 123 is also set below the first air outlet 122 to retain the conventional fresh air outlet method.

[0048] In a specific embodiment, the distance between the upper edge of the first air outlet 122 and the lower edge of the air-conditioning outlet 101 is between 15 mm and 30 mm. Preferably, the distance between the upper edge of the first air outlet 122 and the lower edge of the air-conditioning outlet 101 is 22 mm.

[0049] Therefore, the present invention limits the distance between the first air outlet and the air-conditioning outlet. On the one hand, it ensures that the wind from the first air outlet is fully mixed with the wind from the air-conditioning outlet through the heat exchange device, thereby improving the comfort of the indoor environment. On the other hand, it reduces the deformation of the air-conditioning shell where the air outlet is located and ensures the strength of the air-conditioning shell.

[0050] See attached Figure 5 A damper component 130 is provided on the fresh air duct 121 , and the damper component 130 is used to open the first air outlet 122 while closing the second air outlet 123 or open the second air outlet 123 while closing the first air outlet 122 .

[0051] Therefore, the present invention sets an optional first air outlet 122 and a second air outlet 123 so that the indoor air passing through the fresh air device 110 is blown out through the first air outlet 122 or the second air outlet 123, thereby ensuring the quality of the indoor air, adapting to the needs of the user, improving the user's comfort, and benefiting the user's health.

[0052] See attached Figure 6 The damper component 130 includes a damper plate 131, a rotating shaft 132 and a driving device 133. The driving device 133 is connected to the rotating shaft 132, and the rotating shaft 132 is connected to the damper plate 131. The driving device 133 drives the damper plate 131 to rotate around the rotating shaft 132. The driving device 133 is a motor or a first motor.

[0053] It should be noted that the rotating shaft and the damper plate can be an integrated structure or a separate structure.

[0054] Preferably, the damper plate 131 is adapted to the shape and size of the fresh air duct 121 and the second air outlet 123 .

[0055] Preferably, the damper plate 131 is square in shape.

[0056] Therefore, the present invention limits the shape and size of the damper plate 131 so that when the damper plate 131 covers the fresh air duct 121 or the second air outlet 123 , the first air outlet 122 or the second air outlet 123 can be closed.

[0057] Preferably, a sealing strip is provided around the damper plate 131 , and preferably, the sealing strip is a rubber ring.

[0058] Therefore, the present invention improves the sealing effect of the air outlet by providing sealing strips (not shown in the figure) around the air door plate 131.

[0059] In a specific embodiment, the first motor is fixed on the volute 120, the rotating shaft 132 does not conflict with the inner wall surface of the volute 120, the motor shaft of the first motor is connected to one end of the rotating shaft 132, the rotating shaft 132 is connected to the damper plate 131, and the first motor drives the damper plate 131 to rotate around the rotating shaft 132.

[0060] In another specific embodiment, the first motor is fixed on the volute 120, and a rotating shaft 132 is provided on one side of the damper plate 131. The length of the rotating shaft 132 can be the same as the length of the damper plate 131 or the length of the rotating shaft 132 can be less than the length of the damper plate 131. A mounting hole is provided on the inner wall surface of the volute 120 where the second air outlet 123 is provided. The rotating shaft 132 passes through the mounting hole and is supported by the structure where the mounting hole is located. The motor shaft of the first motor is connected to one end of the rotating shaft 132, driving the damper plate 131 to rotate with the axis center of the mounting hole of the volute 120 as the center of the circle.

[0061] Preferably, the first motor is fixed to the outer end of the volute 120 .

[0062] See attached Figure 7 The fresh air duct 121 is provided with a limiting portion 124 , the lower surface of the limiting portion 124 abuts against the upper surface of the damper plate 131 , and is used to limit the maximum rotation angle of the damper plate 131 so that the first air outlet 122 is closed.

[0063] Preferably, the limiting portion 124 is a strip-shaped structure.

[0064] Preferably, see Appendix Figure 5 , the maximum rotation angle α of the damper plate 131 is 75°.

[0065] Therefore, the present invention provides a limit portion 124 in the air outlet duct to physically limit the maximum rotation angle of the damper plate 131 so that fresh air is discharged from the second air outlet 123 , which has the characteristics of simple structure and low cost.

[0066] See attached Figure 5 and attached Figure 6 The volute 120 includes an air guide component 140, which is located above the volute 120. There are two first air outlets 122, which are set on the air guide component 140; the air guide component 140 is connected to the volute 120; and the air guide component 140 is communicated with the cavity of the volute 120.

[0067] It should be noted that the air guide component 140 and the volute 120 can be an integral structure, or can be detachably connected, such as by screw connection or snap connection.

[0068] Preferably, see Appendix Figure 6There are two air guide components 140 , and the air guide components 140 are detachably connected to the volute 120 .

[0069] Therefore, on the one hand, the present invention provides an air guide component 140 that is detachably connected to the volute 120, which has a simple structure, is easy to manufacture, has low cost, and is convenient for installation and disassembly; on the other hand, by providing two first air outlets 122 on the air guide component 140, the fresh air outlet volume is increased, so that fresh air can be blown out from both sides, thereby improving the efficiency of indoor air purification; in addition, the position of the first air outlet corresponds to the air outlet of the air conditioner, so that the fresh air from the first air outlet is fully mixed with the air from the air conditioner outlet that passes through the heat exchange device, thereby reducing the temperature difference between the air at the first air outlet and the air conditioner outlet, thereby improving the comfort of the indoor environment.

[0070] See attached Figure 5 and attached Figure 6 The lower end of the volute 120 has a disc-shaped cavity, which is used to accommodate a fan, which is a centrifugal fan 125.

[0071] See attached Figure 5 and attached Figure 8 The inner wall surface of the cavity of the air guide component 140 is tilted upward, and the inclination angle β of the inner wall surface relative to the horizontal plane is between 30° and 50°.

[0072] Therefore, the present invention achieves the effect of guiding fresh air by tilting the inner wall of the cavity of the air guide component 140 upward, changing the direction of fresh air outlet, thereby further ensuring that the fresh air blown out from the first air outlet 122 is fully mixed with the air from the air-conditioning outlet 101, reducing the temperature difference of the outlet air, enhancing the uniformity of the outlet air temperature, and thus improving the comfort of the indoor environment.

[0073] See attached Figure 9 The two first air outlets 122 are arranged at a certain angle, and the angle Y between the center lines of the two first air outlets 122 is between 45° and 65°. Preferably, the angle Y between the center lines of the two first air outlets 122 is 60°.

[0074] Therefore, the present invention increases the coverage area of the air outlet of the first air outlet 122 by arranging the two first air outlets at a certain angle, thereby improving the purification efficiency of the indoor air.

[0075] See attached Figure 10 and attached Figure 11 The fresh air air conditioner 100 includes a decorative panel 103. A third air outlet 102 is provided at a position corresponding to the second air outlet 123 of the fresh air air conditioner 100. The third air outlet 102 is arranged horizontally. The angle θ between the third air outlet 102 and the air guide surface of the decorative panel 103 is between 60° and 90°, so that the air outlet direction of the third air outlet 102 is downward.

[0076] Preferably, the angle θ between the third air outlet 102 and the decorative panel 103 is 80°.

[0077] Therefore, the present invention sets the third air outlet 102 on the air conditioner corresponding to the second air outlet 123 horizontally and at a certain angle to the air conditioner decorative panel 103, so that the fresh air blown out from the second air outlet 123 is blown downward to prevent it from blowing directly on the user and making the user uncomfortable.

[0078] See attached Figure 1 and attached Figure 12 To the attached Figure 14 The fresh air air conditioner 100 also includes a sliding door 104 and a sliding door driving assembly 150. The sliding door driving assembly 150 is used to drive the sliding door 104 to slide. The sliding door 104 is long and can cover the air-conditioning outlet 101 and the first air outlet 122 at the same time along the length direction. It can be used to open or close the air-conditioning outlet 101 and the first air outlet 122 at the same time.

[0079] Preferably, the number of the sliding doors 104 is two, and the sliding doors 104 can simultaneously cover the air-conditioning outlet 101 and the first outlet 122 located on the same side along the length direction.

[0080] Therefore, the present invention sets a sliding door 104. On the one hand, the sliding of the sliding door 104 can open or close the air-conditioning outlet 101 and the first fresh air outlet 122; on the other hand, when the air conditioner is not working, the air outlet is closed to prevent dust in the air duct; in addition, the appearance of the air conditioner is enhanced.

[0081] See attached Figure 14 The sliding door driving assembly 150 includes a motor 151, a gear 152 and a rack 153. The motor 151 is connected to the gear 152, and the rack 153 is connected to the sliding door 104. The gear 152 and the rack 153 are engaged to drive the sliding door 104 to move.

[0082] See attached Figure 14 and attached Figure 15 The sliding door drive assembly 150 also includes an upper shell 154 and a lower shell 155. The upper shell 154 is connected to the lower shell 155 and is fixed on the fresh air air conditioner 100. The gear 152 and the rack 153 are located between the upper shell 154 and the lower shell 155. The motor shaft of the motor 151 passes through the hole of the lower shell 155 and is connected to the gear 152. The upper shell 154 and the lower shell 155 provide a track for the movement of the rack 153. The upper shell 154 and the lower shell 155 limit the up and down movement of the rack 153.

[0083] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A fresh air air conditioner, comprising a fresh air device (110) and a heat exchange device, wherein the heat exchange device is provided with an air conditioning outlet (101) corresponding to the air conditioning device, characterized in that: The fresh air device (110) comprises a volute (120), a cavity in the volute (120) forms a fresh air duct (121), the fresh air duct (121) is provided with a first air outlet (122) and a second air outlet (123), the first air outlet (122) is close to the air-conditioning outlet (101), and the first air outlet (122) is located below the air-conditioning outlet (101), and the second air outlet (123) is located below the first air outlet (122); The fresh air duct (121) is provided with a damper component (130), and the damper component (130) is used to open the first air outlet (122) and close the second air outlet (123) at the same time, or to open the second air outlet (123) and close the first air outlet (122) at the same time; The volute (120) includes an air guide component (140), the number of the first air outlets (122) is two, the first air outlets (122) are arranged on the air guide component (140), the air guide component (140) is located above the volute (120), and the cavity of the air guide component (140) is connected to the cavity of the volute (120); The inner wall surface of the cavity of the air guide component (140) is arranged to be inclined upward, and the inclination angle β of the inner wall surface relative to the horizontal plane is between 30° and 50°; The two first air outlets (122) are arranged at a certain angle, and the angle Y between the center lines of the two first air outlets (122) is between 45° and 65°; The fresh air air conditioner (100) is provided with a third air outlet (102) at a position corresponding to the second air outlet (123); the third air outlet (102) is arranged horizontally; and an angle θ between the third air outlet (102) and the air guide surface of the decorative panel (103) is between 60° and 90°.

2. The fresh air air conditioner according to claim 1, characterized in that: The distance between the upper edge of the first air outlet (122) and the lower edge of the air-conditioning outlet (101) is between 15 mm and 30 mm.

3. The fresh air air conditioner according to claim 1, characterized in that: The damper component (130) comprises a damper plate (131), a rotating shaft (132) and a driving device (133). The driving device (133) is connected to the rotating shaft (132), the rotating shaft (132) is connected to the damper plate (131), and the driving device (133) drives the damper plate (131) to rotate around the rotating shaft (132).

4. The fresh air air conditioner according to claim 3, characterized in that: The fresh air duct (121) is provided with a limiting portion (124), the lower surface of the limiting portion (124) abuts against the upper surface of the damper plate (131), and is used to limit the maximum rotation angle of the damper plate (131), so that the first air outlet (122) is closed.

5. The fresh air air conditioner according to claim 4, characterized in that: The maximum rotation angle α of the damper plate (131) is 75°.

6. The fresh air air conditioner according to claim 1, characterized in that: The air guide component (140) is detachably connected to the volute (120).

7. The fresh air air conditioner according to claim 1, characterized in that: The fresh air air conditioner (100) further comprises a sliding door (104) and a sliding door driving assembly (150), wherein the sliding door driving assembly (150) drives the sliding door (104) to move, and the sliding door (104) is used to simultaneously open or close the air conditioner air outlet (101) and the first air outlet (122).

8. The fresh air air conditioner according to claim 7, characterized in that: The sliding door driving assembly (150) comprises a motor (151), a gear (152) and a rack (153); the motor (151) is connected to the gear (152); the rack (153) is connected to the sliding door (104); the gear (152) and the rack (153) are engaged with each other to drive the sliding door (104) to move.

9. The fresh air air conditioner according to claim 8, characterized in that: The sliding door drive assembly (150) further comprises an upper housing (154) and a lower housing (155), wherein the upper housing (154) is connected to the lower housing (155), the gear (152) and the rack (153) are located between the upper housing (154) and the lower housing (155), and the motor shaft of the motor (151) passes through a hole in the lower housing (155) and is connected to the gear (152).

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