Heat pump

1. A heat pump having an outdoor unit with a compressor, an outdoor heat exchanger, and a plurality of electrical devices including a plurality of on-off valves and a plurality of expansion valves housed in a package, the heat pump comprising:

a terminal block box housing a terminal block for supplying an electric power to at least one of the electrical devices, wherein

the terminal block box is located between a portion of side plates of the package and some of the plurality of electrical devices located on the side of the portion of the side plates, and

the terminal block box is supported and made rotatable in a horizontal direction by a hinge, and when the terminal block box is located at an open position, the on-off valves of the electrical devices are exposed to the outside, and the terminal block box is located at a position higher than the plurality of expansion valves of the electrical devices.

2. The heat pump according to claim 1 , wherein a remote monitoring apparatus is housed in the terminal block box.

3. An outdoor unit of a heat pump, the outdoor unit comprising:

a package comprising a plurality of side plates configured to define a chamber, wherein a compressor and a heat exchanger are included in the chamber;

a plurality of electrical devices included in the chamber, the plurality of electrical devices configured to be positioned between a first side plate of the plurality of side plates and a second side plate of the plurality of side plates, the plurality of electrical devices comprising:

a plurality of on-off valves; and

a plurality of expansion valves;

a terminal block via which electric power is supplied to at least one of the electrical devices; and

a terminal block box defining a housing in which the terminal block is located, the terminal block box is located at a position higher than the plurality of expansion valves and is configured to be rotatable in a horizontal direction between a closed position and an open position;

wherein, when the terminal block is in the closed position, the terminal block box is configured to be positioned intermediate the first side plate and at least one of the plurality of on-off valves such that the terminal block box fills an opening and the at least one of the plurality of on-off valves is inaccessible via the opening; and

wherein, when the terminal block is in the open position, the at least one of the plurality of on-off valves is accessible via the opening.

4. The outdoor unit of claim 3 , further comprising a remote monitoring apparatus located within the housing of the terminal block box.

5. The outdoor unit of claim 3 , wherein the package further comprises a frame having a vertical portion and a horizontal portion coupled to the vertical portion, the first side plate configured to be removably coupled to the frame.

6. The outdoor unit of claim 5 , wherein the terminal block box is coupled to the vertical portion of the frame via a hinge, the hinge configured to support the terminal block box and enable rotation of the terminal block box in the horizontal direction.

7. The outdoor unit of claim 6 , wherein the terminal block box is configured to be releasably coupled to the horizontal portion of the frame.

8. The outdoor unit of claim 6 , further comprising means for releasably coupling the terminal block box to the horizontal portion of the frame.

9. The outdoor unit of claim 6 , wherein:

the horizontal portion of the frame includes a hole; and

the terminal block box includes a locking tool configured to releasably engage with the hole, wherein, in the closed position, the locking tool is engaged with the hole, and wherein, in the open position, the locking tool is disengaged with the hole.

10. The outdoor unit of claim 3 , wherein the terminal block box is located at the position higher than the plurality of expansion valves to protect electronic components housed in the terminal block box from condensation corresponding to the plurality of expansion valves.