Cooling and heating countercurrent heat exchanger

Abstract

The utility model provides a refrigerating and heating countercurrent heat exchanger which comprises a heat exchanger body, the heat exchanger body is connected with a flow control assembly, the two ends of the flow control assembly are connected with a first stop valve and a second stop valve respectively, and a throttling valve is arranged between the second stop valve and the flow control assembly. Through matched connection of the one-way valves in the four specific directions and the pipelines, it can be guaranteed that refrigerants and air or other heat-carrying media are subjected to countercurrent flow heat exchange no matter in a refrigeration mode or a heating mode, and the purposes of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The utility model relates to a heat exchanger, in particular to a heat exchanger with countercurrent cooling and heating, belonging to the technical field of refrigeration equipment. Background Art

[0002] The heat exchange efficiency of the heat exchanger is one of the important factors affecting the energy efficiency of air conditioners. The refrigerant flows inside the heat exchanger of the air conditioner, exchanging heat with the air or other heat carrier passing through the surface of the heat exchanger. As we all know, the heat exchange efficiency of the heat exchanger is the highest when the flow direction of the refrigerant and the air or other heat carrier is countercurrent. However, the heat exchangers of heat pump air conditioners in the industry can basically only ensure that the flow direction of the refrigerant and the air or other heat carrier is countercurrent in one operating mode and concurrent in the other operating mode. This cannot ensure that the efficiency of the heat exchanger is in the optimal state during the year-round operation, resulting in a certain amount of energy waste. Summary of the invention

[0003] In view of this, the utility model provides a heat exchanger with countercurrent flow for both cooling and heating. Through the coordinated connection of one-way valves and pipelines in four specific directions, it can ensure that the refrigerant and air or other heat carrier media are in countercurrent heat exchange regardless of cooling mode or heating mode, thereby achieving the purpose of energy saving and emission reduction.

[0004] The technical solution of the embodiment of the utility model is implemented as follows: a heat exchanger with countercurrent flow for cooling and heating, including a heat exchanger body, the heat exchanger body is connected to a flow control component, the two ends of the flow control component are respectively connected to a first stop valve and a second stop valve, and a throttle valve is arranged between the second stop valve and the flow control component.

[0005] Further preferably, the flow control assembly includes a first one-way valve, a second one-way valve, a third one-way valve and a fourth one-way valve connected through a copper tube.

[0006] Further preferably, the first stop valve is a gas pipe stop valve, and the second stop valve is a liquid pipe stop valve.

[0007] Further preferably, the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve are distributed in a two-by-two symmetrical manner.

[0008] Further preferably, one end of the throttle valve is connected in series between the first one-way valve and the second one-way valve through a copper tube, and the other end is connected to the second stop valve.

[0009] Further preferably, the valve directions of the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve are all set in opposite directions.

[0010] Further preferably, one end of the first stop valve is connected in series between the third one-way valve and the fourth one-way valve through a copper tube.

[0011] Further preferably, one end of the heat exchanger body is connected in series between the first one-way valve and the third one-way valve through a copper tube, and the other end of the heat exchanger body is connected in series between the second one-way valve and the fourth one-way valve through a copper tube.

[0012] Further understanding of the utility model:

[0013] When the wind direction or other heat carrier flows from the heat exchanger body to the flow control component and remains constant, when the air conditioner is in cooling mode, the refrigerant flows in the following directions: second stop valve → throttle valve → first check valve → heat exchanger body → fourth check valve → first stop valve. The refrigerant in the heat exchanger body flows from the flow control component to the heat exchanger body, and the wind direction or other heat carrier flows outside the heat exchanger from the heat exchanger body to the flow control component, forming countercurrent heat exchange.

[0014] When the air conditioner is in heating mode, the refrigerant flows in the following direction: first stop valve → third one-way valve → heat exchanger body → second one-way valve → throttle valve → second stop valve. The refrigerant in the heat exchanger body flows from the flow control component to the heat exchanger body, and the wind direction or other heat carrier flow direction outside the heat exchanger is from the heat exchanger body to the flow control component, still forming countercurrent heat exchange.

[0015] Therefore, whether it is cooling or heating, the flow direction of the refrigerant in the heat exchanger is always opposite to the wind direction or other heat carrier flow direction outside the heat exchanger, thereby achieving the purpose of improving heat exchange efficiency and reducing energy waste.

[0016] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0017] By connecting the one-way valves and pipelines in four specific directions, the refrigerant in the heat pump system can flow through the heat exchanger in the same direction under different working modes, so that the flow direction of the refrigerant in the heat exchanger is always opposite to the wind direction outside the heat exchanger or other heat carrier flow direction, thereby achieving the purpose of countercurrent heat exchange, thereby improving the annual average heat exchange efficiency of the heat exchanger of the heat pump air conditioner, making the heat pump air conditioner consume less energy, and achieving a certain degree of energy saving and emission reduction.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a structural diagram of the first embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the refrigerant flow direction in the refrigeration mode of the first embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the refrigerant flow direction in the heating mode of the first embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the second embodiment of the heat pump air conditioning system using the present utility model.

[0024] Figure numerals: 1, first stop valve; 2, second stop valve; 3, throttle valve; 4, first non-return valve; 5, third non-return valve; 6, second non-return valve; 7, fourth non-return valve; 8, heat exchanger body; 9, wind direction or other heat carrier; 10, refrigerant flow direction; 100, outdoor side; 200, indoor side; 300, outside wind direction; 400, outdoor fan; 500, outdoor heat exchanger; 600, non-return valve; 700, non-return valve; 800, non-return valve; 900, non-return valve; 110, four-way valve; 111, compressor; 112, liquid pipe stop valve; 113, gas pipe stop valve; 114, throttle valve; 115, non-return valve; 116, non-return valve; 117, non-return valve; 118, non-return valve; 119, inside heat exchanger; 120, inside fan; 121, inside wind direction. DETAILED DESCRIPTION

[0025] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0026] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0027] like Figure 1As shown, embodiment 1 of the utility model provides a heat exchanger with countercurrent flow for both cooling and heating, a heat exchanger with countercurrent flow for both cooling and heating, comprising a heat exchanger body 8, wherein the heat exchanger body 8 is connected to a flow control component, wherein the two ends of the flow control component are respectively connected to a first stop valve 1 and a second stop valve 2, and a throttle valve 3 is arranged between the second stop valve 2 and the flow control component.

[0028] In the first embodiment, specifically: the flow control component includes a first one-way valve 4, a second one-way valve 6, a third one-way valve 5 and a fourth one-way valve 7 connected by a copper tube.

[0029] In the first embodiment, specifically: the first stop valve 1 is a gas pipe stop valve, and the second stop valve 2 is a liquid pipe stop valve.

[0030] In the first embodiment, specifically: the first one-way valve 4 , the second one-way valve 6 , the third one-way valve 5 and the fourth one-way valve 7 are symmetrically distributed in a two-by-two manner.

[0031] In the first embodiment, specifically: one end of the throttle valve 3 is connected in series between the first one-way valve 4 and the second one-way valve 6 through a copper tube, and the other end is connected to the second stop valve 2 .

[0032] In the first embodiment, specifically, the valve directions of the first one-way valve 4 , the second one-way valve 6 , the third one-way valve 5 and the fourth one-way valve 7 are all set in opposite directions.

[0033] In the first embodiment, specifically: one end of the first stop valve 1 is connected in series between the third one-way valve 5 and the fourth one-way valve 7 through a copper tube.

[0034] In the first embodiment, specifically: one end of the heat exchanger body 8 is connected in series between the first one-way valve 4 and the third one-way valve 5 through a copper tube, and the other end is connected in series between the second one-way valve 6 and the fourth one-way valve 7 through a copper tube.

[0035] Further understanding of the utility model embodiment 1:

[0036] like Figure 2 As shown, when the wind direction or other heat carrier 9 flows from the heat exchanger body 8 to the flow control component and remains constant, when the air conditioner is in cooling mode, the refrigerant flow direction 10 is: second stop valve 2 → throttle valve 3 → first check valve 4 → heat exchanger body 8 → fourth check valve 7 → first stop valve 1, the refrigerant flow direction 10 in the heat exchanger body 8 is from the flow control component to the heat exchanger body 8, and the wind direction or other heat carrier 9 outside the heat exchanger flows from the heat exchanger body 8 to the flow control component, forming countercurrent heat exchange;

[0037] like Figure 3As shown, when the air conditioner is in heating mode, the refrigerant flow direction 10 is: first stop valve 1→third check valve 5→heat exchanger body 8→second check valve 6→throttle valve 3→second stop valve 2, the refrigerant flow direction 10 in the heat exchanger body 8 is from the flow control component to the heat exchanger body 8, and the wind direction or other heat carrier 9 outside the heat exchanger flows from the heat exchanger body 8 to the flow control component, still forming countercurrent heat exchange;

[0038] Therefore, no matter it is cooling or heating, the refrigerant flow direction 10 in the heat exchanger is always opposite to the wind direction outside the heat exchanger or the flow direction of other heat carrier 9, thereby achieving the purpose of improving heat exchange efficiency and reducing energy waste.

[0039] like Figure 4 As shown, the heat pump air conditioning system of the utility model is used in the second embodiment:

[0040] The inner and outer heat exchangers of the heat pump air conditioner all use the utility model. When cooling, the refrigerant in the system flows as follows: compressor 111 → four-way valve 110 → check valve 900 → outdoor heat exchanger 500 → check valve 600 → gas pipe stop valve 113 → throttle valve 114 → check valve 115 → inner heat exchanger 119 → check valve 118 → liquid pipe stop valve 112 → four-way valve 110 → compressor 111; when heating, the refrigerant in the system flows as follows: compressor 111 → four-way valve 110 → liquid pipe stop valve 112 → check valve 117 → inner heat exchanger 119 → check valve 116 → throttle valve 114 → gas pipe stop valve 113 → check valve 800 → outdoor heat exchanger 500 → check valve 700 → four-way valve 110 → compressor 111;

[0041] Depend on Figure 4 It can be seen that no matter in cooling mode or heating mode, the refrigerant in the inner and outer heat exchangers realizes countercurrent heat exchange with the air outside the heat exchanger, and the heat exchange process is carried out using this efficient heat exchange method, thereby reducing energy consumption and improving energy efficiency.

[0042] By connecting the one-way valves and pipelines in four specific directions, the refrigerant in the heat pump system can flow through the heat exchanger in the same direction under different working modes, so that the flow direction of the refrigerant in the heat exchanger is always opposite to the wind direction outside the heat exchanger or other heat carrier flow direction, thereby achieving the purpose of countercurrent heat exchange, thereby improving the annual average heat exchange efficiency of the heat exchanger of the heat pump air conditioner, making the heat pump air conditioner consume less energy, and achieving a certain degree of energy saving and emission reduction.

[0043] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A heat exchanger with countercurrent cooling and heating, comprising a heat exchanger body (8), characterized in that: The heat exchanger body (8) is connected to a flow control component, the two ends of the flow control component are respectively connected to a first stop valve (1) and a second stop valve (2), and a throttle valve (3) is provided between the second stop valve (2) and the flow control component; The flow control component comprises a first one-way valve (4), a second one-way valve (6), a third one-way valve (5) and a fourth one-way valve (7) which are connected via a copper tube; The first one-way valve (4), the second one-way valve (6), the third one-way valve (5) and the fourth one-way valve (7) are symmetrically distributed in a two-by-two pattern; One end of the throttle valve (3) is connected in series between the first one-way valve (4) and the second one-way valve (6) through a copper tube, and the other end is connected to the second stop valve (2); The valve directions of the first one-way valve (4), the second one-way valve (6), the third one-way valve (5) and the fourth one-way valve (7) are all arranged in opposite directions; One end of the heat exchanger body (8) is connected in series between the first one-way valve (4) and the third one-way valve (5) through a copper tube, and the other end is connected in series between the second one-way valve (6) and the fourth one-way valve (7) through a copper tube.

2. A heat exchanger with countercurrent cooling and heating according to claim 1, characterized in that: The first stop valve (1) is a gas pipe stop valve, and the second stop valve (2) is a liquid pipe stop valve.

3. A heat exchanger with countercurrent cooling and heating according to claim 2, characterized in that: One end of the first stop valve (1) is connected in series between the third one-way valve (5) and the fourth one-way valve (7) via a copper tube.

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