CN101375108A

CN101375108A - Air conditioner

Info

Publication number: CN101375108A
Application number: CNA2007800036868A
Authority: CN
Inventors: 吉冈俊; 太田直之
Original assignee: Daikin Industries Ltd
Current assignee: Daikin Industries Ltd
Priority date: 2006-02-03
Filing date: 2007-02-02
Publication date: 2009-02-25
Anticipated expiration: 2027-02-02
Also published as: EP1983270A4; JP4495090B2; CN101375108B; KR20080083356A; WO2007088964A1; AU2007210492A1; KR100981246B1; EP1983270A1; JP2007205661A; AU2007210492B2

Abstract

An indoor heat exchanger (5) has refrigerant passes, and the lowermost refrigerant pass of the refrigerant passes is laid such that, in cooling operation, it allows refrigerant to flow to heat transmission tubes (6) on both the windward and the leeward of air that is sent from a fan device (21) and also allows the refrigerant to flow out of an exit side heat transmission tube (6) that is located on the windward side, at the second row from the lowermost part of the indoor heat exchanger (5).

Description

Aircondition

Technical field

[0001] the present invention relates to a kind of aircondition that suppresses the skew (drift) of heat exchanger.

Background technology

[0002] in recent years, requirement to energy-conservationization is more and more stronger, in the heat exchanger of very capable aircondition, the pattern of wants is made as a multipath structure such as refrigerant flow path with a U-shaped heat-transfer pipe, in order to avoid machine performance is owing to the pressure loss in the evaporimeter descends.

[0003] at this, the refrigerant path number is being made as under the situation of many quantity, need to suppress since the difference of wind speed profile cause, the heat exchange amount in the refrigerant path between every refrigerant path is poor, and the room air of mode after indoor heat converter guides suction there not be gas leakage.For this reason, up to now the bottom of this indoor heat converter directly is placed on the bottom surface of drain pan (drain pan) (for example, with reference to patent documentation 1).

[0004] below, to Fig. 6 one of the paths arrangement of existing refrigerant path example is illustrated with Fig. 4.Remark additionally, in Fig. 6, be illustrated as the situation of evaporimeter using indoor heat converter 5 at Fig. 4.

[0005] duct arrangement that is positioned at the refrigerant path of next stage in many refrigerant path shown in Figure 4 is: cold-producing medium is from counting from foot in the second level and flowing into by the heat-transfer pipe 6 of leeward one side, pass through the next stage heat-transfer pipe 6 of the second level heat-transfer pipe 6 of windward one side and leeward one side more successively, from the next stage heat-transfer pipe 6 of windward one side, flow out then.

[0006] in addition, the duct arrangement of next stage refrigerant path shown in Figure 5 is: cold-producing medium flows into from the next stage heat-transfer pipe 6 of windward one side, pass through the second level heat-transfer pipe 6 of windward one side and the second level heat-transfer pipe 6 of leeward one side more successively, from the next stage heat-transfer pipe 6 of leeward one side, flow out then.

[0007] in addition, the duct arrangement of next stage refrigerant path shown in Figure 6 is: cold-producing medium flows into from the next stage heat-transfer pipe 6 of windward one side, pass through the next stage heat-transfer pipe 6 of the second level heat-transfer pipe 6 of windward one side and leeward one side more successively, from the second level heat-transfer pipe 6 of leeward one side, flow out then.

Patent documentation 1: Japanese publication communique spy opens the 2005-315455 communique

[0008] yet, refrigerant path shown in Figure 4 has following problems, that is: when using indoor heat converter 5 as evaporimeter, the condensed water that is created in the indoor heat converter 5 lodges in the drain pan 22, making can be in water by the heat-transfer pipe 6 of outlet one side in the next stage refrigerant path of indoor heat converter 5, the part of ability is used to the heat exchange carried out with condensed water, and the very big amplitude of ability that causes exporting a side descends.

[0009] in addition, Fig. 5 and refrigerant path shown in Figure 6 have following problems, that is: because the heat-transfer pipe 6 of outlet one side of refrigerant path is configured in leeward one side, so the heat exchanger effectiveness of indoor heat converter 5 is bad.

Summary of the invention

[0010] the present invention, described problem researchs and develops out in order to solve just.Its purpose is: a kind of cold-producing medium skew and refrigerating capacity and good aircondition of heat exchanger effectiveness that suppresses heat exchanger is provided.

[0011] in order to reach described purpose, in the present invention, the heat-transfer pipe 6 of outlet one side is set in place in counting from foot more than the second level and by on the position of windward one side, so that the heat-transfer pipe 6 of outlet one side that prevents next stage refrigerant path is not in water.

[0012] in other words, first invention is an object with following aircondition, that is: comprise heat exchanger 5, air blast 21 and drain pan 22, this heat exchanger 5 has many refrigerant path that formed by many heat-transfer pipes 6 across the predetermined distance configuration, this air blast 21 send room air and makes this room air carry out heat exchange to described heat exchanger 5, and this drain pan 22 accumulates the condensed water that is created in the described heat exchanger 5.

[0013] duct arrangement that is positioned at the refrigerant path of next stage in described many refrigerant path is: when cooling operation, cold-producing medium is crossed over lay respectively at windward one side of the air of sending here from described

air blast

21 and 6 circulations of heat-transfer pipe of leeward one side, and made cold-producing medium count more than the second level and flow out by the heat-transfer pipe 6 locational, outlet one side of windward one side from being arranged in from the foot of described heat exchanger 5.

[0014] in described first invention, when cooling operation, in the refrigerant path of next stage, cold-producing medium is crossed over 6 circulations of heat-transfer pipe lay respectively at windward one side and leeward one side, and counts more than the second level and flow out by the heat-transfer pipe 6 locational, outlet one side of windward one side from the foot that is arranged in automatic heat-exchanger 5.

[0015] therefore, the present invention is very favourable aspect following, increases the turning number of times of heat-transfer pipe 6 that is:, strengthens the heat-exchange capacity of the next stage refrigerant path of heat exchanger 5, thereby suppresses the decline as the evaporability of heat exchanger 5.And, because the heat-transfer pipe 6 of outlet one side of cold-producing medium being disposed at the foot of automatic heat-exchanger 5 counts more than the second level and by on the position of windward one side, so the heat exchanger effectiveness decline phenomenon that condensed water caused that lodges in the drain pan 22 can be suppressed to Min..

[0016] second invention is that described aircondition comprises that also discharging lodges in the emptying pump 23 of the condensed water in the described drain pan 22 in described first invention.Described emptying pump 23 constitutes: the condensed water in lodging in described drain pan 22 discharges condensed water before arriving the heat-transfer pipe 6 of described outlet one side.

[0017] in described second invention, the condensed water in lodging in drain pan 22 discharges condensed water before arriving described outlet side heat-transfer pipe 6.Therefore, the outlet side heat-transfer pipe 6 of refrigerant path can be in condensed water, and the part that can prevent ability is used to the heat exchange carried out with condensed water, thereby suppresses the decline of heat exchanger effectiveness.

[0018] the 3rd invention, be in described first invention, described aircondition also comprises: discharging lodges in the emptying pump 23 of the condensed water in the described drain pan 22 and detects the water level detecting mechanism 24 that the condensed water that lodges in the described drain pan 22 arrives the predetermined water level of the heat-transfer pipe 6 that is lower than described outlet one side.Described emptying pump 23 constitutes: according to the testing result discharging condensed water of described water level detecting mechanism 24.

[0019] in described the 3rd invention, water level detecting mechanism 24 detects the condensed water that lodges in the drain pan 22 and arrives the predetermined water level that is lower than outlet side heat-transfer pipe 6, and described aircondition discharges condensed waters according to testing result with emptying pump 23.Therefore, though up to now no matter how high the water level of condensed water is, always all allow emptying pump 23 move, so that prevent that refrigerant path is not in water, but by utilizing the present invention, this emptying pump 23 is intermittently worked according to the water level of condensed water, the result can lower power consumption.

The effect of-invention-

[0020] as mentioned above, very favourable aspect following according to the present invention, that is: increase the turning number of times of heat-transfer pipe 6, strengthen the heat-exchange capacity of the next stage refrigerant path of heat exchanger 5, thereby suppress decline as the evaporability of heat exchanger 5.And, because the heat-transfer pipe 6 of outlet one side of cold-producing medium being configured in the foot of automatic heat-exchanger 5 counts more than the second level and by on the position of windward one side, so the heat exchanger effectiveness decline phenomenon that condensed water caused that lodges in the drain pan 22 can be suppressed to Min..

[0021] in addition, according to second invention, the heat-transfer pipe 6 of outlet one side of refrigerant path can be in condensed water, and the part that can prevent ability is used to the heat exchange carried out with condensed water, thereby suppresses the decline of heat exchanger effectiveness.

[0022] in addition, according to the 3rd invention, though up to now no matter how high the water level of condensed water is, always all allow emptying pump 23 move, so that prevent that refrigerant path is not in water, but by utilizing the present invention, this emptying pump 23 is intermittently worked according to the water level of condensed water, the result can lower power consumption.

Description of drawings

[0023] Fig. 1 is the refrigerant loop figure of the related aircondition of embodiments of the present invention.

Fig. 2 is the skeleton diagram of internal structure of the indoor set of the aircondition that shows that present embodiment is related.

Fig. 3 is the side view of structure of the refrigerant path of the indoor heat converter that shows that present embodiment is related.

Fig. 4 is the skeleton diagram that shows the internal structure of other indoor sets that have aircondition now.

Fig. 5 is the skeleton diagram that shows the internal structure of other indoor sets that have aircondition now.

Fig. 6 is the skeleton diagram that shows the internal structure of other indoor sets that have aircondition now.

Symbol description

[0024] 5-indoor heat converter (heat exchanger); 6-heat-transfer pipe; 21-air blast; 22-drain pan; 23-emptying pump; 24-float switch (water level detecting mechanism).

The specific embodiment

[0025] below, with reference to the accompanying drawing explanation detailed in addition to embodiments of the present invention.Following explanation about suitable embodiment is example only basically, fully not to the present invention, the intention that adopts object of the present invention or its purposes to be limited.

[0026] Fig. 1 is the figure that shows the refrigerant loop structure of the aircondition in the embodiments of the present invention.As shown in Figure 1, in refrigerant loop 1, as the compressor 7 of compressing mechanism, as the cold-producing medium controlling organization four-way change-over valve 9, outdoor heat converter 3, be connected in turn as the expansion valve 11 and the indoor heat converter 5 of expansion mechanism, refrigerant loop 1 is a loop.Be filled with cold-producing medium in this refrigerant loop 1, this refrigerant loop 1 constitutes this cold-producing medium to be circulated and carry out steam compression type refrigerating and circulates.Remark additionally, in described four-way change-over valve 9, be provided with first to the

4th valve port

9a, 9b, 9c, the 9d of the pipeline that can connect refrigerant loop 1.

[0027] in addition, on described indoor heat converter 5, be connected with current divider 13 and interflow device 15, this current divider 13 makes condensed cold-producing medium decompression in indoor heat converter 3 when cooling operation, this cold-producing medium is branched off in each bar refrigerant path of indoor heat converter 5, this interflow device 15 makes respectively the interflow of the cold-producing medium after the evaporation in many refrigerant path of indoor heat converter 5, makes then in the cold-producing medium inflow outdoor heat exchanger 3 behind this interflow.

[0028] in this refrigerant loop 1, the ejiction opening of compressor 7 is connected on the first valve port 9a of four-way change-over valve 9.The 3rd a valve port 9c of four-way change-over valve 9 and an end of outdoor heat converter 3 couple together.The other end of outdoor heat converter 3 couples together by the end of expansion valve 11 with indoor heat converter 5.The other end of indoor heat converter 5 is connected on the 4th valve port 9d of four-way change-over valve 9.In addition, the second valve port 9b of four-way change-over valve 9 and the suction inlet of compressor 7 couple together.

[0029] described four-way change-over valve 9 can switch following two states, that is: in the first valve port 9a and the 3rd valve port 9c connection, the state (state shown in Fig. 1 (a)) that the second valve port 9b and the 4th valve port 9d are communicated with, and in the first valve port 9a and the 4th valve port 9d connection, the state (state shown in Fig. 1 (b)) that the second valve port 9b and the 3rd valve port 9c are communicated with.

[0030] in other words, described four-way change-over valve 9 constitutes and can switch following two states by switching the loop direction of cold-producing medium in refrigerant loop 1, that is: in the condensation of refrigerant that makes outdoor heat converter 3, make the state of the cold-producing medium evaporation of indoor heat converter 5, and in the cold-producing medium evaporation that makes outdoor heat converter 3, make the state of the condensation of refrigerant of indoor heat converter 5.

[0031] Fig. 2 is the skeleton diagram of internal structure of the indoor set of the aircondition that shows that present embodiment is related.In Fig. 2, indoor set comprises indoor heat converter 5, air blast 21, drain pan 22, emptying pump 23 and float switch 24, this air blast 21 send room air and makes this room air carry out heat exchange to indoor heat converter 5, this drain pan 22 is placed indoor heat converter 5, and accumulate the condensed water that is created in this indoor heat converter 5, these emptying pump 23 dischargings lodge in the condensed water in the drain pan 22, and this float switch 24 detects the condensed water that lodges in the drain pan 22 and arrives predetermined water level.

[0032] described indoor heat converter 5 has many refrigerant path that formed by many heat-transfer pipes 6 across the predetermined distance configuration.Particularly, in the present embodiment, dispose 24 heat-transfer pipes 6,, have 11 refrigerant path (with reference to Fig. 3) by the end of many heat-transfer pipes 6 being connected to each other with the U-shaped pipe.Remark additionally, in Fig. 2 and Fig. 3, with the loop direction of flechette-type symbolic representation cold-producing medium when cooling operation.

[0033] flows into respectively in described many refrigerant path with the cold-producing medium after described current divider 13 shuntings.Afterwards, the cold-producing medium after flowing out from many refrigerant path respectively collaborates by interflow device 15, then in the inflow outdoor heat exchanger 3.

[0034] at this, only be positioned at the paths arrangement difference of next stage in described many refrigerant path, the paths arrangement of other refrigerant path is all identical.Particularly, the refrigerant path that is positioned at next stage is formed by four heat-transfer pipes 6, the duct arrangement of this next stage refrigerant path is: cold-producing medium flows at foot and by the heat-transfer pipe 6 of windward one side from indoor heat converter 5, again successively through by leeward one side and be positioned at the heat-transfer pipe 6 of foot and, then from by windward one side and be arranged in partial heat-transfer pipe 6 and flow out by leeward one side and be positioned at partial heat-transfer pipe 6.

[0035] on the other hand, other refrigerant path beyond the next stage refrigerant path are all formed by two heat-transfer pipes 6, the duct arrangement of other refrigerant path beyond this next stage refrigerant path is: cold-producing medium flows into from the heat-transfer pipe 6 by windward one side, again from by flowing out the heat-transfer pipe 6 of leeward one side.

[0036] remark additionally, when warming operation, the circulating direction of the circulating direction of the refrigerant path of the relative indoor heat converter 5 of cold-producing medium during with cooling operation is opposite.In other words, in next stage refrigerant path, cold-producing medium flows into from the second level heat-transfer pipe 6 by windward one side of indoor heat converter 5, flow through successively again by the second level heat-transfer pipe 6 of leeward one side with by leeward one side and be positioned at the heat-transfer pipe 6 of foot, then from flowing out by windward one side and the heat-transfer pipe 6 that is arranged in foot.

[0037] on the other hand, in other refrigerant path beyond next stage refrigerant path, cold-producing medium flows into from the heat-transfer pipe 6 by leeward one side, again from by flowing out the heat-transfer pipe 6 of windward one side.

[0038] described float switch 24 detects the condensed water that lodges in the drain pan 22 and arrives the predetermined water level that is lower than outlet side heat-transfer pipe 6, particularly, predetermined water level is and counts in the second level from the foot of indoor heat converter 5 and lean on the height and position of the heat-transfer pipe 6 of windward one side to compare lower water level.

[0039] described emptying pump 23 constitutes: according to the condensed water in the testing result discharging drain pan 22 of float switch 24.Like this, just very favourable aspect following, that is: the heat-transfer pipe 6 that prevents outlet one side in the next stage refrigerant path guarantees heat exchanger effectiveness not in water.

[0040] as mentioned above, related according to the embodiment of the present invention aircondition, very favourable aspect following, that is: increase the turning number of times of heat-transfer pipe 6, strengthen the heat-exchange capacity of the next stage refrigerant path of heat exchanger 5, thereby suppress decline as the evaporability of heat exchanger 5.And, because will be positioned at foot that the heat-transfer pipe 6 of outlet one side of cold-producing medium is disposed at automatic heat-exchanger 5 counts in the second level and by on the position of windward one side, so the heat exchanger effectiveness decline phenomenon that condensed water caused that lodges in the drain pan 22 can be suppressed to Min..

[0041] in addition, the condensed water in lodging in described drain pan 22 discharges condensed water before arriving the heat-transfer pipe 6 of described outlet one side.Therefore, the heat-transfer pipe 6 of outlet one side of refrigerant path can be in condensed water, and the part that can prevent ability is used to the heat exchange carried out with condensed water, thereby suppresses the decline of heat exchanger effectiveness.

[0042] in addition, float switch 24 detects the condensed water that lodges in the described drain pan 22 and arrives the predetermined water level that is lower than outlet side heat-transfer pipe 6, and described aircondition discharges condensed waters according to testing result with emptying pump 23.Therefore, though up to now no matter how high the water level of condensed water is, always all allow emptying pump 23 move, so that prevent that refrigerant path is not in water, but by utilizing the present invention, this emptying pump 23 is intermittently worked according to the water level of condensed water, the result can lower power consumption.

-industrial applicibility-

[0043] as mentioned above, the heat that causes of the condensed water that in the time will working as cooling operation, produce of the present invention Exchange efficiency decline phenomenon is suppressed in the minimal situation of great use.

Claims

1. aircondition, comprise heat exchanger (5), air blast (21) and drain pan (22), this heat exchanger (5) has many refrigerant path that formed by many heat-transfer pipes (6) across the predetermined distance configuration, this air blast (21) send room air and makes this room air carry out heat exchange to described heat exchanger (5), this drain pan (22) accumulates the condensed water that is created in the described heat exchanger (5), it is characterized in that:

The duct arrangement that is positioned at the refrigerant path of next stage in described many refrigerant path is: when cooling operation, cold-producing medium is crossed over lay respectively at circulation between the heat-transfer pipe (6) of windward one side of the air of sending here from described air blast (21) and leeward one side, and cold-producing medium is counted more than the second level and by heat-transfer pipe (6) outflow of locational, outlet one side of windward one side from being arranged in from the foot of described heat exchanger (5).

2. aircondition according to claim 1 is characterized in that:

Described aircondition comprises that also discharging lodges in the emptying pump (23) of the condensed water in the described drain pan (22);

Described emptying pump (23) constitutes: the heat-transfer pipe (6) that the condensed water in lodging in described drain pan (22) arrives described outlet one side discharges condensed water before.

3. aircondition according to claim 1 is characterized in that:

Described aircondition also comprises:

The discharging lodge in the condensed water in the described drain pan (22) emptying pump (23) and

Detect the condensed water that lodges in the described drain pan (22) and arrive the water level detecting mechanism (24) of the predetermined water level of the heat-transfer pipe (6) that is lower than described outlet one side;

Described emptying pump (23) constitutes: according to the testing result discharging condensed water of described water level detecting mechanism (24).