Abstract: The present invention discloses a method for preparing a catalyst, comprising the following steps: (1) taking a noble metal salt solution A, adding a modified alumina support material, stirring until uniform and standing; (2) drying the material obtained in step (1) in a vacuum, and calcining at 500° C.-600° C. for 1-4 hours to obtain a powder material containing the noble metal; (3) mixing the noble metal powder material, an adhesive and other components to be added, and ball-milling to obtain a uniform slurry; (4) preparing a noble metal solution B and adjusting pH to 0.5-1; and (5) mixing the slurry of the step (3) with the noble metal solution B, coating the mixture on a support, drying, and calcining at 500° C.-600° C. for 1-2 hours to obtain the target product. The method for preparing the catalyst of the present invention is simple, the conditions of the preparation process are easy to control and the preparation method has strong practicality.

Abstract: An indoor unit of an air conditioner includes a housing, a fan and a heat exchanger. The housing includes an upper base plate provided with an air inlet, a lower base plate detachably mounted to the upper base plate, and a front cover detachably mounted to the upper base plate; the fan is detachably mounted to the lower base plate; and the heat exchanger is detachably mounted to the upper base plate, in which the heat exchanger includes a supporting seat and a heat exchanger core body mounted to the supporting seat. The upper base plate is provided with a first positioning portion; the supporting seat is provided with a second positioning portion; and the first positioning portion cooperates with the second positioning portion to position the heat exchanger core body on the upper base plate.

Abstract: An indoor unit for an air conditioner is provided. The indoor unit includes a housing, and the housing including an upper base plate provided with an air inlet, a lower base plate detachably mounted to the upper base plate and provided with an air outlet, and a front cover detachably mounted to the upper base plate; a heat exchanger mounted to the upper base plate; a fan detachably mounted to the lower base plate; and a guide assembly configured to guide the lower base plate when mounting and dismounting the lower base plate.

Abstract: An indoor unit of an air conditioner includes a housing, a fan and a heat exchanger. The housing includes an upper base plate provided with an air inlet, a lower base plate detachably mounted to the upper base plate, and a front cover detachably mounted to the upper base plate; the fan is detachably mounted to the lower base plate; and the heat exchanger is detachably mounted to the upper base plate, in which the heat exchanger includes a supporting seat and a heat exchanger core body mounted to the supporting seat. The upper base plate is provided with a first positioning portion; the supporting seat is provided with a second positioning portion; and the first positioning portion cooperates with the second positioning portion to position the heat exchanger core body on the upper base plate.

Abstract: The present invention discloses a method for preparing a catalyst, comprising the following steps: (1) taking a noble metal salt solution A, adding a modified alumina support material, stirring until uniform and standing; (2) drying the material obtained in step (1) in a vacuum, and calcining at 500° C.-600° C. for 1-4 hours to obtain a powder material containing the noble metal; (3) mixing the noble metal powder material, an adhesive and other components to be added, and ball-milling to obtain a uniform slurry; (4) preparing a noble metal solution B and adjusting pH to 0.5-1; and (5) mixing the slurry of the step (3) with the noble metal solution B, coating the mixture on a support, drying, and calcining at 500° C.-600° C. for 1-2 hours to obtain the target product. The method for preparing the catalyst of the present invention is simple, the conditions of the preparation process are easy to control and the preparation method has strong practicality.

Abstract: An indoor unit (1000) for an air conditioner is provided. The indoor unit (1000) includes a housing (100) having an upper base plate (110) provided with an air inlet (101), a lower base plate (120) detachably mounted to the upper base plate (110) and provided with an air outlet, and a front cover (130) detachably mounted to the upper base plate (110); a heat exchanger (140) mounted to the upper base plate (110); and a fan (142) detachably mounted to the lower base plate.

Abstract: A method of ultrasonic brazing metal matrix composite, which forms a reinforced composite bond without filling welding wire with reinforcement or adding alloy element to generate ceramic phase, includes the steps of setting a filler metal; introducing ultrasonic vibration to braze in air; dissolving the base materials, and introducing ultrasonic wave again. The method performs the aluminum brazing at low temperature. The periodic time of brazing is shorter and the cost is lower than the conventional brazing methods. The strength, service temperature and dimensional stability of the joint are close to the base article.

Abstract: A method of ultrasonic brazing metal matrix composite, which forms a reinforced composite bond without filling welding wire with reinforcement or adding alloy element to generate ceramic phase, includes the steps of setting a filler metal; introducing ultrasonic vibration to braze in air; dissolving the base materials, and introducing ultrasonic wave again. The method performs the aluminum brazing at low temperature. The periodic time of brazing is shorter and the cost is lower than the conventional brazing methods. The strength, service temperature and dimensional stability of the joint are close to the base article.