Heat pump dehumidification non-cooling multi-split heat exchanger

Abstract

The utility model discloses a heat pump dehumidification non-cooling multi-split heat exchanger which comprises a first heat exchanger, a second heat exchanger and an electric diverter valve, a liquid pipe of the second heat exchanger is connected with one diverter opening of the electric diverter valve after passing through a throttling electronic expansion valve, and a liquid pipe of the first heat exchanger is connected with the other diverter opening of the electric diverter valve. And the air pipe is connected with a liquid pipe between the electric diverter valve and the throttling electronic expansion valve. Through the combined structure of the first heat exchanger and the second heat exchanger, the second heat exchanger at the air return port is used for dehumidification during dehumidification, and cold air generated by dehumidification is heated through the first heat exchanger, so that air blown into a room during dehumidification has higher temperature, and the indoor temperature cannot be reduced.

Description

Technical Field

[0001] The utility model relates to a heat pump dehumidification without cooling multi-connected heat exchanger. Background Art

[0002] At present, during the transition seasons of spring and autumn or the rainy season, the indoor humidity is very high and the human body feels very uncomfortable. In order to dehumidify, the room can only be cooled by air conditioning. Although this method can reduce the indoor humidity, it will also cause the indoor temperature to drop, making people feel very cold and uncomfortable. In order to dehumidify without lowering the temperature, central air conditioning has developed a three-pipe unit. Although the problem can be solved, it causes high costs. Not only does the outdoor unit require two four-way valves for switching, the indoor unit requires two electronic expansion valves, and the indoor and outdoor units also require a third pipe to connect. Not only is the installation cost high, but the installation is also complicated. Utility Model Content

[0003] In view of the above problems, the utility model provides a multi-connected heat exchanger with heat pump dehumidification without cooling, which effectively solves the problems pointed out in the background technology.

[0004] The technical solution adopted by the utility model is:

[0005] A heat pump dehumidification without cooling multi-split heat exchanger includes a first heat exchanger arranged at the air outlet of the indoor unit, a second heat exchanger arranged at the return air outlet of the indoor unit, and an electric diverter valve. The liquid pipe of the second heat exchanger is connected to a diverter port of the electric diverter valve after passing through a throttling electronic expansion valve, the liquid pipe of the first heat exchanger is connected to the other diverter port of the electric diverter valve, and the gas pipe is connected to the liquid pipe between the electric diverter valve and the throttling electronic expansion valve.

[0006] Preferably, the air outlet of the indoor unit is provided with a temperature sensing package for detecting the outlet air temperature.

[0007] At the same time, the utility model also provides a control method for a heat pump dehumidification without cooling multi-split heat exchanger. When the dehumidification mode is turned on, the two diversion ports of the electric diversion valve are opened and controlled according to the following method:

[0008] 1) When T is detected 出风 -T 室内 When the temperature is less than 0.5℃, the current shunt valve is controlled to reduce the flow of the second heat exchanger by a value a every cycle T, and the flow of the first heat exchanger is increased by a value a;

[0009] 2) When T is detected 出风 -T 室内 When the temperature is higher than 0.5℃, the current shunt valve is controlled to reduce the flow of the first heat exchanger by a value a every cycle T, and the flow of the second heat exchanger is increased by a value a.

[0010] 3) When T is detected 出风 -T 室内 =0.5℃, the electric diverter valve is controlled to maintain the current state.

[0011] Preferably, the value a is

[0012] Preferably, the period T is 45 seconds.

[0013] The utility model adopts the combined structure of the first heat exchanger and the second heat exchanger. During dehumidification, the second heat exchanger at the return air outlet is used for dehumidification, and the cold air generated by the dehumidification is heated up by the first heat exchanger. As a result, the wind blown into the room during dehumidification has a higher temperature and will not have a cooling effect on the room. Moreover, the refrigerant that enters the first heat exchanger for heating returns to the second heat exchanger for dehumidification after completing the heating. Such a structural design can ensure that the dehumidification capacity of the unit will not be reduced.

[0014] The utility model can not only solve the temperature reduction problem existing in the conventional heat pump during indoor dehumidification, but also the outdoor unit can adopt the conventional heat pump structure, the cost of the host machine will not increase, and the installation cost and installation are not complicated.

[0015] The utility model controls the electric diverter valve according to the indoor temperature and the air outlet temperature of the indoor unit, which not only does not require additional cost and installation cost of the outdoor unit, but also solves the complexity of installation and solves the problem that dehumidification does not reduce the indoor temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the utility model assembled with an outdoor unit. DETAILED DESCRIPTION

[0018] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0020] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0025] like Figure 1As shown, a heat pump dehumidification without cooling multi-split heat exchanger includes a first heat exchanger 2 arranged at the air outlet of the indoor unit 1, a second heat exchanger 3 arranged at the return air outlet of the indoor unit 1, and an electric diverter valve 5, the liquid pipe of the second heat exchanger 3 is connected to a diverter port of the electric diverter valve 5 after passing through a throttling electronic expansion valve 4, the liquid pipe of the first heat exchanger 2 is connected to the other diverter port of the electric diverter valve 5, and the gas pipe is connected to the liquid pipe between the electric diverter valve 5 and the throttling electronic expansion valve 4.

[0026] The air outlet of the indoor unit 1 is provided with a temperature sensing package 6 for detecting the outlet air temperature.

[0027] The structure works as follows:

[0028] The high-temperature and high-pressure refrigerant generated by the outdoor unit enters the outdoor heat exchanger to release heat. The condensed high-pressure medium-temperature liquid enters the electric diverter valve 5 through the liquid pipe, and enters the indoor unit 1 in two ways through the electric diverter valve 5. One way is throttled by the throttling electronic expansion valve 4 and then enters the second heat exchanger 3 for refrigeration and dehumidification. The obtained cold air is blown to the first heat exchanger 2, and the other way enters the first heat exchanger 2 to release heat. The cold air blown from the second heat exchanger 3 is heated by the first heat exchanger 2 and then blown out, so that the wind blown out of the indoor unit 1 has a higher temperature and will not cause cooling in the room. The refrigerant after heat release from the outdoor unit 2 enters the liquid pipe between the electric diverter valve 5 and the throttling electronic expansion valve 4, merges with the refrigerant there and enters the second heat exchanger 3 for refrigeration and dehumidification. The refrigerant passing through the second heat exchanger 3 returns to the outdoor unit from the gas pipe to complete the circulation of the refrigerant. The indoor fan of the utility model first sucks the indoor humid air into the second heat exchanger 3 of the indoor unit 1 for condensation, and the cold air coming out is heated by the first heat exchanger 2. This not only solves the problem of cooling caused by indoor dehumidification, but also does not increase the cost of the equipment host, and the installation cost and installation are not complicated.

[0029] At the same time, the utility model also discloses a control method for a heat pump dehumidification without cooling multi-split heat exchanger. When the dehumidification mode is turned on, the two diversion ports of the electric diversion valve 5 are both opened and controlled according to the following method:

[0030] 1) When T is detected 出风 -T 室内 When the temperature is lower than 0.5℃, the current diverter valve 5 is controlled to reduce the flow of the second heat exchanger 3 by a value a every period T, and the flow of the first heat exchanger 2 is increased by a value a. T is 45 seconds;

[0031] 2) When T is detected 出风 -T 室内>0.5℃, the current diverter valve 5 is controlled to reduce the flow of the first heat exchanger 2 every period T, and the reduction value is a. At the same time, the flow of the second heat exchanger 3 is also increased, and the increase value is also a. a is T is 45 seconds;

[0032] 3) When T is detected 出风 -T 室内 =0.5°C, the electric diverter valve 5 is controlled to maintain the current state.

[0033] The values ​​T and a in the utility model can be adjusted according to actual tests. 出风 is the temperature of the indoor unit outlet, which can be detected by the temperature sensing package 6, T 室内 The current indoor temperature can be detected by a sensor on the indoor unit 1 for detecting the indoor temperature. Since conventional air conditioners currently have a structure for detecting the current indoor temperature, the utility model will not describe this structure in detail.

[0034] The heat exchanger of the utility model is a heat exchanger structure of an indoor unit 1, which is installed in the indoor unit 1 when in use, and is assembled with the outdoor unit 8 to work together. The outdoor unit 8 used is consistent with the existing host, and only two pipes are connected to the indoor unit 1, namely the high-pressure liquid pipe and the low-pressure gas pipe. During specific assembly, the main port of the electric diverter valve 5 is connected to the liquid pipe port of the outdoor unit 8, and the gas pipe of the second heat exchanger 3 is connected to the gas pipe port of the outdoor unit 8. Figure 2 shown.

[0035] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A heat pump dehumidification without cooling multi-link heat exchanger, characterized in that: The invention comprises a first heat exchanger (2) arranged at the air outlet of an indoor unit (1), a second heat exchanger (3) arranged at the air return outlet of the indoor unit (1), and an electric diverter valve (5), wherein the liquid pipe of the second heat exchanger (3) is connected to a diverter port of the electric diverter valve (5) after passing through a throttling electronic expansion valve (4), the liquid pipe of the first heat exchanger (2) is connected to another diverter port of the electric diverter valve (5), and the gas pipe is connected to the liquid pipe between the electric diverter valve (5) and the throttling electronic expansion valve (4).

2. A heat pump dehumidification without cooling multi-split heat exchanger according to claim 1, characterized in that: The air outlet of the indoor unit (1) is provided with a temperature sensing package (6) for detecting the outlet air temperature.

Images