JPS6093237A - Heating apparatus - Google Patents

Abstract

PURPOSE:To make it possible to maintain the heating calory without lowering the quantity of a heat medium to a condenser when the temperature of external air is low by providing a controller flowing the heat medium liquefied by a condenser from a liquid receiver to a heater and a flowpath sending a gas the pressure of which is reduced, within the liquid receiver to a compressor. CONSTITUTION:Steam of the heat medium generated within the heater 12 is fed to the condenser 2, and a part of the heat medium liquefied by the condenser 2 is passed from an opened first check valve 7 through an inlet flowpath 5 and accumulated in the liquid receiver 11. Upon this occasion, since the inner pressure of the liquid receiver 11 is lower than that of the heater 12, a second check valve 13 is closed, and there is no liquid flow through the second check valve 13. Simultaneously, since the gaseous phase portion of the liquid receiver 11 is connected to the low pressure portion of a heating main circulating path 8 through a throttle part 101 from a flowpath 100, the gas flowing from the flowpath 5 into the liquid receiver 11 simultaneously with the fluid of the heat medium to the heat receiver 11 is pressure-reduced and gradually introduced into the compressor 1. Accordingly, a part of the liquid of the heat medium from the condenser 2 is smoothly led to the liquid receiver 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a heating device, and particularly to improving the performance of a vapor compression type heating device.

[Prior art]

An example of a conventional heating device is shown in FIG. In the figure,
il+ is a compressor, (2) is a condenser, (3) is a pressure reducing device,
(4) is an evaporator, these are connected in sequence behind the piping, and the heating medium is completely enclosed to form a heating device.

In this type of conventional heating system, the vapor of the heat medium that has been brought to a high temperature and pressure regulation in the compressor 111 is condensed and liquefied in the condenser (2). Next, the pressure is reduced to low temperature and low pressure in the pressure reducing device (3), heated in the evaporator (4), and turned into steam again.
Reflux to -C. In this circulation, the heat of condensation during liquefaction in the condenser (2) is heated to the surroundings, for example to warm the room. On the other hand, the evaporator (41) absorbs heat of vaporization from the surroundings in order to evaporate the heat medium, and a compressor (2) for threading is installed inside the compressor (1).

The pressure reducing device; 3) and the evaporator (4) are installed outdoors.

Even in the apparatus configured as described above, the evaporation temperature of the heat medium decreases as the outside air temperature decreases.

Therefore, the suction pressure of the compressor (1) decreases, and the condenser (2)
) has the disadvantage that the heating capacity decreases due to insufficient flow of heat medium. As an auxiliary heat source to compensate for this decrease in heating capacity, there has been a heating device that separately incorporates a heater near the condenser (2). However, providing the heater near the condenser has the disadvantage that the device on the condenser side becomes very small.

[Summary of "Departure 1 Night"] This invention was made in order to eliminate the drawbacks of the above-mentioned leisure products, and is a compressor.

The pressure reducing device and the evaporator are combined in this order to completely circulate the heat medium, and the condenser converts the heat medium into vapor and releases all of the heat. The medium is introduced from the inlet stream 1 through the open constant temperature 1 on-off valve and stored in the liquid receiver, and the closed 2nd on-off valve is extended and connected to the liquid receiver to heat the heat medium and generate all its steam. , condensed from the outlet channel yM
The internal pressure of the liquid receiver is made to be substantially higher than the internal pressure of the heater intermittently, the first on-off valve of the introduction channel is fully closed, and the second on-off valve between the liquid receiver and the heater is closed. By providing a control device that opens and allows the heat medium to flow from the liquid receiver into the heater, and a flow path that reduces the pressure of the gas in the liquid receiver and sends it to the compressor, the heat medium can flow even when the outside temperature is low. ? It circulates smoothly and maintains the amount of heating heat without reducing the flow rate of the heat medium to the condenser.
In addition to obtaining a heating device in which the heating capacity does not decrease, the heat medium is evaporated by the heat generated by the heater, and the heat medium is sent to the condenser through a part of the main heating circulation path,
This is intended to prevent the condenser from becoming complicated and large.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG.

In the figure, compressor 11;, condenser (2), pressure reducing device #
Main heating circuit (8) with 131 and evaporator (4)? It consists of The heat medium liquefied by the vertical condenser (Fff vertical condenser) is introduced from the hijin flow path (51) through the first open valve, for example, the first check valve (7) whose introduction direction is in the forward direction. The liquid receiver 1121 is a heater that continuously heats the heat medium and generates steam by a heating element (16) having a power source (041), and the generated steam is discharged from the outlet channel (6). Part of the heating main circulation path (8) passes through the condenser (
2). This heater ++21n liquid receiver (Ill
K is connected via a second on-off valve, for example, a second check valve 1131 whose flow direction is in the forward direction to the heater (121); in this embodiment, the heater (021) is connected to In addition, 1211 heaters (12
This is a liquid level detector that detects the amount of liquid of the heat medium in 1.
To) A Solenoid valve connects the gas phase part of the heater (121) and the liquid receiver (1
1).
It is fully connected to the connection point with II). In this case, the liquid level detector vD, the flow path (2), and the vomit valve constitute the control device η■, and the heat medium is transferred from the liquid receiver (11) to the check valve 4<2?
It is controlled by V so that it is intermittently sent through the 7JO heater (12I).In addition, it is a t161μ liquid heat medium,
(In order to reduce the pressure of the gas in the liquid receiver 1111 and send it to the compressor 1+i, for example, the liquid receiver (11)
The gas phase part of the evaporator (41) is connected through the throttle part (101).

A heating device with such a configuration uses a heater (121) to generate heat medium vapor, which passes through the outlet flow path (6) and a part of the heating main circulation path (8) to the condenser (2). to the condenser (
2) The aim is to maintain a constant flow rate of the heat medium within. At this time, the heat medium is evaporated (16
1 is refilled intermittently by the control device.
Let's do it from The operation at this time will be described. Solenoid valve (2
) is closed, the pressure relationship inside the heating system is as follows:
Because the heat medium in 12- is continuously heated by the heating element (151) and its steam is generated, the internal pressure of the gas phase part of the heater 02, the output flow #I6+61 and the main heating circulation The internal pressure at the connection point with the channel (8), the internal pressure at the connection point between the introduction channel (6) and the heating main circulation path (8), and the internal pressure of the receiving liquid 11111 decrease in this order. On the other hand, the heat medium vapor generated in the heater ll2I is supplied to the condenser (2). On the other hand, a part of the heat medium liquefied in the condensing type (2) fully opens the first check valve (7) and passes through the introduction channel i51f to the liquid receiver (II).
) and accumulate there. At this time, since the internal pressure of the receiving liquid 1.4H is lower than the internal pressure of the heater 021, the second check box T131 is closed, so the liquid cannot flow through the second check valve (131). 111) gas phase part (1 flow path (100)
The throttle part (101) is fully valved and the heating main circulation path (8) is opened.
Since it is connected to the low-pressure part of the heat carrier, the gas that flows from the introduction channel (5) to the liquid receiver 111 at the same time as the heat medium liquid is depressurized and gradually sent to the compressor ++1. Therefore, a portion of the heat medium liquid from the condenser (2) is smoothly guided to the liquid receiver 01).

Next, when the heating medium liquid 1i (16) in the heating fJi 121 becomes insufficient, this is detected by the liquid level detector QD, and the tunic valve is opened, and the gas phase part of the heater (12. Liquid receiver (11
) and the entire flow path (4). At this time, the pressure relationship in the heating device is such that the internal pressure of the receiving liquid F'S B+o and the internal pressure of the heater 021 match, forming a sieve, and the connection point between the outlet flow path +61 and the heating main circulation path (8). Internal pressure, introduction flow 1M +5
1 and the heating main circulation path (8), the internal pressure decreases in this order. Therefore, the first check valve (7) in the introduction channel (51) is closed, and the second check valve H between the liquid receiver (11) and the heater α2I is closed.
Since the receiver (11) is installed above the heater (121), the area is opened to the vehicle power of the /ff1 body heat medium in the receiver (1), and the liquid heat carrier (121) in the receiver (1) is opened. 1G) flows through the heater (second check valve 03 to +21).

Note that, at this time as well, the heat medium vapor generated in the heater 121 is being supplied to the condenser (2).

In this way, apart from the flow of the heat medium in the heating main circulation path (8) in the above-mentioned device, the vapor of the heat medium is completely continuously passed through the condenser (2).
), the heating capacity does not decrease even when the outside temperature is low. Furthermore, since the heater can be added to the outdoor side, there is no need for long wiring indoors, and wiring costs are significantly reduced compared to when the heater is added to the indoor side. Furthermore, the indoor side, that is, the condenser side, can be made compact.

Moreover, FIG. 3 shows another embodiment of this invention, (
c) is a three-way valve, with the inlet side of the entire inlet flow path (6), the outlet side of the second flow path (51), and the third flow path connected to the heater α21. It is connected to the gas phase.

In this embodiment, normally, the inlet flow path (51) and the outlet l1lI are fully connected (at this time, the connection to the gas phase part of the heater (121 is interrupted), and the second check valve u3)?The heat medium is stored in the liquid receiver 111) in the closed state. Heater (121
When the number position (16) becomes insufficient, this is detected by turning the liquid level jetter V and the three-way valve (c) is fully rotated, and the outlet side of the inlet flow path (5) and the heater] Switch to connect all the gas phase parts of I21 (at this time, the connection to the inlet side of the introduction channel (5) is made). In addition, the internal pressure of the liquid receiver 1111 and the heater 02) is equal to, and the receiver (11)
Due to the vehicle power of the liquid heat medium: C, the second check valve enters the aaag state, and the heat medium flows from the liquid receiver (11) to the heater (121) through the second check valve (13). This embodiment also has the same effect as the above embodiment, and also has the function of the first on-off valve in addition to the three-way valve, so the configuration is simplified.

Further, FIG. 4 shows still another embodiment of this invention, and shows CI! J is a power source, (2) is a heating element, and ＼ is a switch, which is equipped with a heating part that opens and closes the switch @ to heat the heat medium in the liquid receiving gill, and connects the inside of the liquid receiving gill and the heater (1).
It is designed to control the pressure difference within 21.

That is, the normal light switch @ is opened to lower the pressure of the heat medium in the liquid receiver (11), and the first check valve (7) is open and the second check valve Q31H is closed to release the liquid heat medium. Introduction channel 1f
When the amount of liquid in the heater 1121 is insufficient, close the switch (A) to lower the internal pressure of the liquid receiver (11) to the level above the internal pressure of the heater (121). As a result, the first check valve (7) is opened and the second check valve (7) is opened.
When the check valve (131 is opened), the liquid heat medium is transferred to the liquid receiver (
11) through the second check valve t131Th and heated 5 [2
Make it flow to 1. Does this example VC have the same effect as the above example? In addition, since the positional relationship between the liquid receiver (Ill) and the heater 021 is not limited, there is an effect that it can be used widely.

FIG. 5 shows yet another embodiment of the invention.

In the figure, @ is a float valve with a liquid level detection function.
The liquid phase parts and gas phase parts of the float valve (2) and heater 02) are connected to each other, and the flow path connecting the gas phase part of the float valve (2) and the liquid receiver (river) can be opened and closed. In this embodiment, the liquid receiver 1111 is configured as a heater +12.
1, placed higher than c. When the amount of heat medium in the heater [+21] is sufficient, the float valve g3 rises and becomes closed, and the internal pressure of the heater [121
), the Ml check valve (7) becomes open, the second check valve (131) becomes closed, and the heat medium is transferred to the liquid receiver +I.
ll K accumulate. When the amount of heat medium in the heater (121) becomes insufficient, the float valve (2) also lowers and becomes open, and the internal pressure of the receiver (11) becomes substantially equal to the internal pressure of the heater +121, and the receiver's Due to the power of the liquid heat medium of g!L device 111), the first check valve (7) is in the closed state, and the second check valve (7) is in the closed state
3) becomes open. For this reason, the heat medium flows from the liquid receiver (11) to the heater (I21) through the $2 check valve (13).In this embodiment as well, as in the above embodiment, the heat medium flows to the condenser (2). The flow rate of the heat medium can be maintained at an appropriate level.

Furthermore, the introduction flow path (51 is necessarily the heating main circulation path (8)
For example, the 6th light without the need to connect to the still pressure pressure of
It may be connected to the inlet of the evaporator 14 as shown in the figure, or the same effect will be achieved if it is connected to a portion where a liquid heat medium is obtained.

The heating element (15) of the heating element (12') is not necessarily immersed in a heat medium, and it is not necessary to use an air heater, but it may be heated from an external source. Any heat source can be used as long as it can heat, such as gas. In addition, the liquid level detector I2D that detects the entire liquid amount of the heat medium in the heater QJ is not necessarily necessary, and the heat medium is intermittently transferred from the liquid receiver II) to the heater 1121 at regular intervals. It may also be allowed to flow. Also, 1st. Although the second on-off valve is opened and closed by adjusting the pressure difference, it is also possible to open and close it electrically in conjunction with the solenoid valve.

Furthermore, the flow path (100) must have a constriction part (101).
? There is no need to install a liquid receiver (11
) and the pressure reducing device (3) of the heating main circulation path (8), or by connecting the a inlet 1111 with a flow path (:100), the steam in the liquid receiver Ill is depressurized and transferred to the compressor. If configured so as to flow into (1), the same effects as in the above embodiment can be achieved.

〔Effect of the invention〕

As described above, the eleventh feature of the present invention is a compressor.

A condenser and an evaporator of the Itt compression grinding device are connected in this order to circulate the heat medium, and the heat medium is vaporized in the condenser.

The heating main circulation path that liquefies the heat medium by the condenser and releases heat, the liquid receiver that introduces the heat medium from the introduction flow path and stores it through the M1 on-off valve that opens the condenser, and the liquid receiver that stores the heat medium through the closed second on-off valve. The heater completely heats the heat medium and generates steam, which is sent from the outlet stream #@ to the condenser.Intermittently, the internal pressure of the liquid receiver is made substantially higher than the internal pressure of the heater, and the inlet stream is Close the first on-off valve between the liquid receiver and the heater, and close the second on-off valve between the receiver and the heater. Open,
A control device that causes the heat medium to flow into the heater from the liquid receiver, and a channel that reduces the pressure of the steam in the liquid receiver and sends it to the compressor?
- In addition, it is possible to provide a heating system that does not reduce the flow rate of the heat medium to the condenser and the heating capacity even when the outside temperature is low. Furthermore, the heat medium generated by the heater evaporates the heat medium, and the heat medium passes through part of the main heating circulation path and is sent to the condenser. It is important to avoid making the construction complicated and large. Furthermore, even if the gaseous heat medium flows into the liquid receiver, there is a flow path that reduces the pressure and sends it to the compressor, so that the liquid heat medium flows smoothly into the liquid receiver.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing a conventional heating system vI, Fig. 2 is a circuit diagram showing a heating system according to an embodiment of the present invention, and Figs.
FIG. 3 is a circuit diagram showing still other embodiments of the present invention. il+...Compressor, (2)...Condenser, (3)...
・Decrease. Pressure device, (4)...Evaporator, (51...Introduction flow path, (6)...Output flow path, (7)...First on-off valve, +81-...Heating main circulation path , En...Liquid receiver, 112
1... Heater, Bat... Second on-off valve, (4)...
-Control device #, (10o)...Flow path. In addition, in the drawings, the same reference numerals indicate the same or corresponding parts. Agent Masuo Oiwa Figure 1 Figure 2 Figure 3 Figure 4 Figure δ Figure C3 Figure 101 Figure 7

Claims (1)

[Claims] (1) Compressor, condenser, pressure reducing device, and evaporator? A main heating circulation path connects in this order to circulate the heat medium, liquefies the vapor of the heat medium in the condenser and releases heat, and a first on-off valve that opens the liquefied heat medium to the condenser. A liquid receiver is introduced from the introduction flow path and stored therein, and is connected to the liquid receiver via a closed second on-off valve to heat the heat medium and generate its vapor, and then flows from the outlet flow path to the above condenser. The heater to which the liquid is sent, intermittently makes the internal pressure of the liquid receiver substantially equal to or higher than the internal pressure of the heater, closes the first on-off valve of the introduction channel, and closes the first on-off valve of the introduction channel, and 2. Open the on-off valve and release the heat medium from the liquid receiver. A heating device equipped with a flow @ ft that completely reduces the pressure of the gas in the cape device surface and the liquid receiver that flows into the heater and sends it to the compressor. +21 Is the first on-off valve the flow of heat medium from the condenser to the receiver? The second on-off valve is composed of a $2 check valve that allows the flow of the heat medium from the liquid receiver to the IJO heater to flow in the forward direction. Claim 1. ! The heating device described in J. (3) All the heaters are disposed below the liquid receiver area, and the control device has a flow path that connects the gas phase part of the heater and the liquid receiver via a magnetic valve. Claim 1 ``i'' refers to the heating device according to claim 2.