Air heating apparatus and method for disassembling air heating apparatus

An air heating apparatus comprising:

• an expansion tank configured to preserve water;
• a water heater configured to receive heat from a combustion gas generated through a combustion reaction and heat the water;
• a heating heat exchanger configured to receive the water heated by the water heater and exchange heat with air that is to be discharged for heating;
• a fan configured to send the air to the heating heat exchanger;
• a case, in which the water heater, the expansion tank, the heating heat exchanger, and the fan are disposed in an interior thereof;
• a main passage connecting the expansion tank, the water heater, and the heating heat exchanger, and including a first part that is a portion extending from the expansion tank;
• and
• a recovery passage connecting the heating heat exchanger and the first part to guide the water introduced into the heating heat exchanger to the first part,
• wherein the case includes:
• an outer box having a first opening in a reference direction that is one direction that is perpendicular to an upward/downward direction;
• a first opening cover coupled to the outer box and covering the first opening when being coupled to the outer box;
• a first partition wall coupled to the outer box, and extending along the reference direction to divide an interior of the outer box to a first division space and a second division space;
• a second partition wall disposed in the interior of the outer box to be perpendicular to the first partition wall to divide the first division space to a (1-1)-th division space and a (1-2)-th division space;
• and
• a sealing part disposed between the second partition wall and the outer box, and configured to maintain a sealing state between the (1-1)-th division space and the (1-2)-th division space, and
• wherein a pair of through-hole passes through the second partition wall along the reference direction,
• wherein the heating heat exchanger includes a through-member, a portion of which passes through the through-hole, and
• wherein the through-member includes:
• an introduction through-member passing through any one of the pair of through-holes and connected to the main passage;
• and
• a discharge through-member passing through the other one of the pair of through-holes and connected to the recovery passage.

A method for disassembling an air heating apparatus:

• wherein the air heating apparatus includes:
• an expansion tank configured to preserve water;
• a water heater configured to receive heat from a combustion gas generated through a combustion reaction and heat the water;
• a heating heat exchanger configured to receive the water heated by the water heater and exchange heat with air that is to be discharged for heating;
• a fan configured to send the air to the heating heat exchanger;
• a main passage connecting the expansion tank, the water heater, and the heating heat exchanger, and including a first part that is a portion extending downwards from the expansion tank;
• a recovery passage connecting the heating heat exchanger and the first part to guide the water introduced into the heating heat exchanger to the first part;
• and
• a case, in which the water heater, the expansion tank, the heating heat exchanger, the fan, the main passage, and the recovery passage are disposed in an interior thereof, and
• wherein the case includes:
• an outer box having a first opening in a reference direction that is one direction that is perpendicular to an upward/downward direction;
• a first opening cover coupled to the outer box and covering the first opening when being coupled to the outer box;
• a first partition wall coupled to the outer box, and extending along the reference direction to divide an interior of the outer box to a first division space and a second division space;
• and
• a second partition wall disposed in the interior of the outer box to be perpendicular to the first partition wall, dividing the first division space to a (1-1)-th division space and a (1-2)-th division space, and to which the heat exchanger is coupled;
• the method comprising:
• a cover separating operation of separating the first opening cover of the case of the air heating apparatus;
• a passage water discharging operation of discharging water in a main passage and a recovery passage;
• and
• a second partition wall separating operation of separating the second partition wall, to which a water heater is coupled, from an outer box of the case.