Drain plug and heat pump

Abstract

Provided is a heat pump including a housing including a base, a guide provided inside the housing and configured to guide water, and a drain plug detachably mountable on the base. The drain plug includes a drain body forming a drain passage, a through hole formed to pass through the drain body, and a guide connection portion extending from the drain body and connectable to the guide.

What is claimed is: 
     
         1 . A heat pump comprising:
 a housing including a base;   a guide provided inside the housing and configured to guide water; and   a drain plug detachably mountable on the base;   wherein the drain plug includes:   a drain body forming a drain passage;   a through hole passing through the drain body, the through hole configured to guide water of the base to the drain passage while the drain plug is mounted on the base; and   a guide connection portion extending from the drain body and connectable to the guide, the guide connection portion configured to guide water of the guide to the drain passage while the drain plug is mounted on the base and the guide connection portion is connected to the guide.   
     
     
         2 . The heat pump of  claim 1 , wherein while the drain plug is mounted on the base, the drain passage is configured to extend from inside of the housing to outside of the housing, and configured to guide water introduced through the through hole from the base and water introduced through the guide connection portion from the guide. 
     
     
         3 . The heat pump of  claim 2 , wherein the drain plug further includes a discharge port provided at one end of the drain passage configured to communicate with the outside of the housing, and configured to discharge the water guided by the drain passage. 
     
     
         4 . The heat pump of  claim 1 , wherein the drain plug further includes a stopper protruding from an outer surface of the drain body and configured to interfere with the base to limit a rotation range of the drain plug with respect to the base. 
     
     
         5 . The heat pump of  claim 4 , wherein the base includes an opening,
 the drain plug is mounted on the base by being inserted into the opening, and   the stopper is configured to contact at least a portion of a rim defining the opening of the base.   
     
     
         6 . The heat pump of  claim 4 , wherein the base includes an opening,
 the drain plug is mounted on the base by being inserted into the opening, and   the opening further includes:   a body hole corresponding to the drain body; and   a stopper hole extending from a portion of the body hole to outside of the body hole, and corresponding to the stopper.   
     
     
         7 . The heat pump of  claim 6 , wherein the stopper hole extends along a circumferential direction of the body hole and has a first point and a second point provided on an opposite side of the first point, and
 the drain plug is rotatable between a position in which the stopper is arranged at the first point of the stopper hole and a position in which the stopper is arranged at the second point of the stopper hole.   
     
     
         8 . The heat pump of  claim 6 , wherein the stopper is a first stopper, and the stopper hole is a first stopper hole,
 the drain plug further includes a second stopper spaced apart from the first stopper and protruding from an outer surface of the drain body, and   the opening further includes:   a second stopper hole extending from another portion of the body hole to the outer side of the body hole, and corresponding to the second stopper.   
     
     
         9 . The heat pump of  claim 1 , wherein the guide connection portion further includes a contact protrusion configured to contact an inner surface of the guide. 
     
     
         10 . The heat pump of  claim 6 , wherein the guide connection portion extends upward from the drain body and is vertically connectable to the guide, and
 the contact protrusion has a shape tapered upward.   
     
     
         11 . The heat pump of  claim 1 , further comprising:
 a heat exchanger; and   a water tank disposed inside the housing and configured to store water heat-exchanged by the heat exchanger,   wherein the guide is configured to connect the water tank and the drain plug, and guide water of the water tank to the drain plug.   
     
     
         12 . The heat pump of  claim 1 , further comprising:
 a heat exchanger;   a heating unit disposed indoors, outside of the housing;   a water pipe configured to provide water heat-exchanged by the heat exchanger to the heating unit or to recover water from the heating unit, at least a portion of the water pipe being disposed inside the housing; and   a tray disposed inside the housing and configured to support the water pipe, the tray including a tray body and a tray hole passing through the tray body,   wherein the guide is configured to allow communication between the tray hole and the drain plug, and guide water of the tray body to the drain plug.   
     
     
         13 . The heat pump of  claim 1 , further comprising:
 a heat exchanger;   a water pipe connected to the heat exchanger and configured to provide water to the heat exchanger or to discharge water heat-exchanged by the heat exchanger; and   a valve connected to the water pipe and configured to open based on a pressure of the water in the water pipe being higher than a set pressure or a temperature of the water in the water pipe being higher than a set temperature,   wherein the guide is configured to connect the valve and the drain plug and guide water of the valve to the drain plug.   
     
     
         14 . The heat pump of  claim 1 , wherein the base includes an opening, and
 the drain plug is mounted on the base by being inserted into the opening,   the drain plug further includes a plate extending from an outer surface of the drain body and coming into contact with a lower surface of the base, the plate having a shape tapered downward and configured to guide water passing through the opening to the drain passage.   
     
     
         15 . The heat pump of  claim 1 , wherein the base includes an opening, and
 the drain plug is mounted on the base by being inserted into the opening,   the drain plug further includes a locking protrusion formed along a circumference of the through hole, the locking protrusion supported by an upper surface of the base.