JPH0712362A - Heat conveyor - Google Patents

Abstract

PURPOSE:To obtain a large heat conveying amount and to make the structure in the height direction compact by arranging a switching valve between a receiver and a gas/liquid separator, piping a top of the separator to a first check valve through the receiver and a mesh filter, and opposing the filter in a receiver vessel. CONSTITUTION:Since a mesh filter 5 is opposed in the receiver 2, an area of the filter 5 can be increased, a resistance in the case of passing the filter 5 can be minimized at the time of feeding out liquid medium stored in the receiver 2 by opening a switching valve 4. Accordingly, a time in which the medium is completely fed from the receiver 2 to the separator 3 is shortened, thereby obtaining a large heat conveying amount. Since it can be fed into the separator 3 in a necessary shortest time, the structure in the height direction of the receiver 2 and the separator 3 can be simply reduced in size.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat transfer device which heats a medium to perform heating operation by a non-powered heat transfer method.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, a heat transfer device of this type has a gas-liquid separator 3 disposed at an intermediate position between a receiver 2 disposed above a medium heater 1 and the receiver 2
And an open / close valve 4 for equalizing the pressure between the gas-liquid separator 3 and a mesh filter 5 and a first check valve 6 in the pipe between the receiver 2 and the gas-liquid separator 3. There is. The medium evaporated in the medium heater 1 is condensed in the indoor heat exchanger 7 and flows into the receiver 2 via the second check valve 8. When the liquid medium accumulates in the receiver 2, the on-off valve 4 is opened, the receiver 2 and the gas-liquid separator 3 are pressure-equalized, and the liquid medium of the receiver 2 is passed through the mesh filter 5 and the first check valve 6 to make the gas-liquid separator 3 Flow into. When the inflow is completed, the on-off valve 4 is closed and the first check valve 6 is also closed, so that the liquid medium condensed from the indoor heat exchanger 7 is again flowed into the receiver 2. Such an operation is repeated to carry the heat by the medium to perform the heating operation.

[0003]

However, the above-mentioned structure has the following problems.

Since the liquid medium accumulated in the receiver 2 is equalized with the static pressure component in the gas-liquid separator 3 and flows out due to the difference in gravity, the opening time of the on-off valve 4 must be set long and the medium circulation amount Let G (g / sec) and the cycle of the on-off valve 4 (open time T ₀ + close time T ₁ ) be T: G = V × γ / T (V: receiver volume (cc)) (γ: liquid in receiver When T increases from the medium density (g / cc), G decreases and a large heat transfer amount cannot be obtained.

In the pipe between the receiver 2 and the gas-liquid separator 3, there is a mesh filter 5 which protects the first check valve 6, and in particular, the resistance when passing in the circumferential direction close to the inner wall of the pipe is large and the inflow time is long. In order to shorten the temperature and obtain a large amount of heat transfer, it is necessary to simply position the receiver 2 further upward and raise the liquid level, which increases the height between the receiver 2 and the gas-liquid separator 3 and growing.

The present invention solves the above-mentioned conventional problems. When the on-off valve is opened, the liquid medium of the receiver is introduced into the gas-liquid separator in a shorter time, thereby obtaining a larger heat transfer amount. , The receiver and the gas-liquid separator are intended to be compact and compact in the height direction.

[0007]

In order to achieve the above object, the heat transfer device of the present invention comprises a medium heater, a gas-liquid separator disposed above the medium heater, and a gas-liquid separator. A receiver arranged further above, the gas-liquid separator top and the receiver are piped through an indoor heat exchanger, and an on-off valve arranged between the receiver and the gas-liquid separator, the receiver and a mesh filter. And a first check valve piped to the top of the gas-liquid separator via the mesh filter, and the mesh filter faces the inside of the receiver container.

[0008]

According to the present invention, the area of the mesh filter can be made large by the above construction, and the resistance when passing through the mesh filter when the liquid medium accumulated in the receiver is opened by opening the on-off valve is minimized. Because you can
The time required for the liquid medium to completely flow into the gas-liquid separator from the receiver can be shortened, and a large amount of heat transfer can be obtained.
Further, since the gas can flow into the gas-liquid separator in the required shortest distance, the configuration of the receiver and the gas-liquid separator in the height direction can be made compact and compact.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same members as those in FIG. 3 are designated by the same reference numerals.

In FIGS. 1 and 2, 1 is a medium heater, a receiver 2 is provided above the medium heater 1, and a gas-liquid separator 3 is provided at an intermediate position between the receiver 2 and the medium heater 1. Is provided. A mesh filter 5 is attached in a substantially horizontal state inside the receiver 2 container. The top of the gas-liquid separator 3 has a connection port A
9, a connection port B10 for connecting the bottom portion of the receiver 2 via the first check valve 6, and a connection port C11 for connecting and piping one end of the indoor heat exchanger 7, and a connection port D12 at the bottom portion. And a connection port E13. The gas-liquid separator 3 and the medium heater 1 are connected to the bottom of the medium heater 1 and the connection port D1.
2 is connected to the heater inlet pipe 14, and the medium heater 1
Is connected in a loop with a heater outlet pipe 15 connecting the top part of the heater and the connecting pipe E13, and the heater outlet pipe 15 is
The tip end opening is located below the connection port A9 while being inserted into the gas-liquid separator 3. At the top of the receiver 2, a connection port F17 for connecting the pressure equalizing pipe 16 from the connection port A9 through the opening / closing valve 4, and a connection for connecting the other end of the indoor heat exchanger 7 through the second check valve 8. Mouth G18
Is provided.

In the above structure, the medium heated by the medium heater 1 flows into the gas-liquid separator 3 through the heater outlet pipe 15 in a two-phase state, where the liquid medium is the gas-liquid separator 3. To the medium heater 1 again through the heater inlet pipe 14. On the other hand, the gas medium in the two-phase state that has flowed into the gas-liquid separator 3 from the medium heater 1 has a connection port C.
It is pressure-fed from 11 to the indoor heat exchanger 7 and exchanges heat to be condensed and liquefied. At this time, when the on-off valve 4 is closed, the first check valve 6 is closed, and the supercooled liquid medium from the indoor heat exchanger 7 is pressure-fed to the receiver 2 through the second check valve 8 and The gas medium in 2 is condensed and liquefied, the pressure in the receiver 2 is rapidly reduced, the supercooled liquid medium in the indoor heat exchanger 7 is drawn into the receiver 2, and the inside of the receiver 2 is separated from the indoor heat exchanger 7. Filled with the condensate medium. When the on-off valve 4 is opened in this state, the receiver 2 and the gas-liquid separator 3 are in a pressure equalized state, and the liquid medium in the receiver 2 passes through the mesh filter 5 and the first check valve 6 and passes through the gas-liquid separator 3 Flow into. At this time, the second check valve 8 is closed.

Next, when the on-off valve 4 is closed, the first check valve 6
Also closes, the supercooled liquid medium flows into the receiver 2 again from the indoor heat exchanger 7, and fills the receiver 2 with the condensed liquid medium,
The cycle of opening the on-off valve 4 is repeated. That is, the natural circulation cycle between the gas-liquid separator 3 and the medium heater 1, the cycle of the gas-liquid separator 3, the indoor heat exchanger 7, the second check valve 8, the receiver 2, and the first check valve 6 is the receiver. 2 is an intermittent operation cycle in which the supercooled liquid medium from the indoor heat exchanger 7 is stored in the space 2 and is intermittently supplied to the gas-liquid separator 3.

Here, the mesh filter 5 for protecting the first check valve 6 from dust and the like is made to face the inside of the container of the receiver 2 with a large area. When flowing out, the resistance when passing through the mesh filter 5 can be made much smaller than in the conventional case. As a result, the time until the liquid medium completely flows into the gas-liquid separator 3 from the receiver 2 is shortened, and a larger heat transfer amount can be obtained.

Further, since the gas can flow out into the gas-liquid separator 3 in the shortest distance, the receiver 2 and the gas-liquid separator 3 can be discharged.
The configuration in the height direction of can be made compact and compact.

[0015]

As described in the above embodiments, the heat transfer device of the present invention has the following effects.

(1) The mesh filter for protecting the first check valve is made to face a large area inside the receiver container. In other words, the liquid medium passes through the entire area. Since the resistance when passing through can be minimized, the time until the liquid medium flows from the receiver to the gas-liquid separator is shortened, and a larger heat transfer amount can be obtained.

(2) Further, since the passage resistance is the smallest, the gas can flow into and out of the gas-liquid separator in the shortest distance, so that the constitution of the receiver and the gas-liquid separator in the height direction can be made compact and compact. .

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram of a heat transfer device according to an embodiment of the present invention.

FIG. 2 is a sectional view of the same main part.

FIG. 3 is a circuit configuration diagram of a conventional heat transfer device.

[Explanation of symbols]

 1 Medium Heater 2 Receiver 3 Gas-Liquid Separator 4 Open / Close Valve 5 Mesh Filter 6 First Check Valve 7 Indoor Heat Exchanger

Claims (1)

[Claims] 1. A medium heater, a gas-liquid separator disposed above the medium heater, a receiver disposed further above the gas-liquid separator, a top portion of the gas-liquid separator and the receiver for indoor heat. An on-off valve, which is piped through an exchanger, is arranged between the receiver and the gas-liquid separator,
A heat transfer device comprising the receiver and a first check valve that is piped to the top of the gas-liquid separator through a mesh filter, and the mesh filter faces the inside of the receiver container.