JPH0328303Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a device for preventing frost from adhering to an outdoor heat exchanger in a heat pump type air conditioner.

(Prior art) When this type of air conditioner is operated, frost adheres to the outdoor heat exchanger, which impedes operation.
It also causes a decrease in heat exchange efficiency. Therefore, in order to prevent frost from forming, conventionally the operation was switched to the anti-frost cycle to heat and melt the frost.
Alternatively, it is generally removed by heating and melting using heater equipment.

(Problems to be solved by the invention) According to the conventional defrosting means described above, the function as an air conditioner is temporarily reduced because the refrigeration cycle is switched to the anti-frost cycle for a predetermined period of time, and the air conditioner is intermittently operated. It produces a pleasant sensation, and when using a heater, it requires particular energy for heating and special equipment is required, which is disadvantageous from an economic point of view.

(Means for solving the problem) The present invention eliminates the above-mentioned disadvantages of the conventional methods and defrosts using an extremely simple and economical means. In a heat pump air conditioner that is equipped with an exchanger and respective fans and exhausts a portion of the indoor air to the outdoors, a heat pipe is installed that uses the heat retained in the indoor air to be exhausted outdoors as a heating source. It is characterized in that the heat radiating part of the heat pipe is integrally connected to the heat exchange part of the outdoor heat exchanger.

(Function) As mentioned above, so-called wall-mounted heat pump air conditioners, which have an indoor heat exchanger, an outdoor heat exchanger, and air conditioning equipment such as fans for each inside the unit case, have recently been used to remove some of the dirty indoor air. A method is often used to exhaust the air to the outdoors.

The present invention utilizes the heat contained in the exhaust air from indoors, uses a heat pipe that acts as a heating source, and integrally connects the heat radiating part of the heat pipe to the heat exchange part of the outdoor heat exchanger. By providing this, the heat radiated heats the heat exchange section and effectively prevents the formation of frost.

(Example) Embodiments of the present invention will be described with reference to the drawings.

In the drawing, reference numeral 1 denotes a unit case of a wall-mounted heat pump type air conditioner, and inside it there are a known indoor heat exchanger 2, an outdoor heat exchanger 3, indoor and outdoor fans 4, 5, and others not shown. Air conditioning equipment will be installed for heating and cooling purposes.

Indoor air is introduced from the suction port 6 and circulated indoors from the suction port 7 as conditioned air via the indoor heat exchanger 2 by the operation of the fan 4, and the outside air required indoors is heat exchanged indoors from the suction port 8. It is supplied into the room via vessel 2.

Also, a part of the air contaminated indoors enters the case 1 through the outlet 9, passes through the outdoor heat exchanger 3, and is exhausted to the outside through the exhaust port 10 by operating the fan 5.

In the above air conditioner, the heating part 11a of the heat pipe 11 is located near the indoor air outlet 9, and the heat radiation part 11b is integrally connected to the heat exchange part 3a of the outdoor heat exchanger 3.

In the figure, 12 indicates a fin provided in the heating portion 11a of the heat pipe 11.

In the illustrated example, three heat pumps 11 are shown as shown in FIG. 2, but the number can be increased or decreased as desired.

Furthermore, any means for attaching the heat pipe 11 may be used, such as attaching it to an outdoor heat exchanger, for example.

In the illustrated example, the heat dissipation part 11b of the heat pipe 11
The heat exchange coil 3 that constitutes the outdoor heat exchanger 3
Although the fins 3a and 3b are assembled together and integrally connected using the fins 3b, the connecting means may be arbitrary.

Originally, heat pipes have good thermal conductivity; for example, even when the room temperature is 20°C and the temperature of the heat exchange part of the outdoor heat exchanger is 0 to -2°C, it conducts enough heat to melt the frost that has adhered. do.

(Effects of the invention) According to the invention, a heat pipe is used that uses the retained heat of the air exhausted from the room to the outside as a heat source, and its heat radiating part is integrally connected to the heat exchange part of the outdoor heat exchanger. The heat dissipated heats the heat exchange part of the outdoor heat exchanger and prevents frost from forming. Therefore, continuous operation can be continued without the need for defrosting by reversing the heat pipe action as in conventional methods. Moreover, it is economical because the use of energy can be omitted without particularly providing a heater facility, and it also has effects such as being able to be used in cold regions.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a cutaway side view, and FIG. 2 is a sectional view taken along the line -- in FIG. 1. 1... Unit case, 2... Indoor heat exchanger, 3... Outdoor heat exchanger, 4, 5... Fan,
9...Indoor air exhaust outlet, 10...Exhaust port,
11... Heat pipe, 11a... Heating part of the heat pipe, 11b... Heat radiation part of the heat pipe.

Claims (1)

[Scope of utility model registration request] In a heat pump air conditioner that is equipped with an indoor heat exchanger, an outdoor heat exchanger, and their respective fans in a unit case, and exhausts a portion of the indoor air outdoors, the amount of indoor air exhausted outdoors is A defrosting device for a heat pump type air conditioner, comprising a heat pump that uses retained heat as a heating source, and a heat radiating section of the heat pump is integrally coupled to a heat exchange section of an outdoor heat exchanger.